mesa update 11 july 2011

30 files changed, 6379 insertions, 5641 deletions

diff --git a/mesalib/src/mesa/main/depthstencil.c b/mesalib/src/mesa/main/depthstencil.c
index ab62c97fe..4d0600050 100644
--- a/mesalib/src/mesa/main/depthstencil.c
+++ b/mesalib/src/mesa/main/depthstencil.c
@@ -393,6 +393,217 @@ _mesa_new_z24_renderbuffer_wrapper(struct gl_context *ctx,
 }
 
 
+static void
+get_row_z32f(struct gl_context *ctx, struct gl_renderbuffer *z32frb, GLuint count,
+             GLint x, GLint y, void *values)
+{
+   struct gl_renderbuffer *dsrb = z32frb->Wrapped;
+   GLfloat temp[MAX_WIDTH*2];
+   GLfloat *dst = (GLfloat *) values;
+   const GLfloat *src = (const GLfloat *) dsrb->GetPointer(ctx, dsrb, x, y);
+   GLuint i;
+   ASSERT(z32frb->DataType == GL_FLOAT);
+   ASSERT(dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+   ASSERT(dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+   if (!src) {
+      dsrb->GetRow(ctx, dsrb, count, x, y, temp);
+      src = temp;
+   }
+   for (i = 0; i < count; i++) {
+      dst[i] = src[i*2];
+   }
+}
+
+static void
+get_values_z32f(struct gl_context *ctx, struct gl_renderbuffer *z32frb, GLuint count,
+                const GLint x[], const GLint y[], void *values)
+{
+   struct gl_renderbuffer *dsrb = z32frb->Wrapped;
+   GLfloat temp[MAX_WIDTH*2];
+   GLfloat *dst = (GLfloat *) values;
+   GLuint i;
+   ASSERT(z32frb->DataType == GL_FLOAT);
+   ASSERT(dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+   ASSERT(dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+   ASSERT(count <= MAX_WIDTH);
+   /* don't bother trying direct access */
+   dsrb->GetValues(ctx, dsrb, count, x, y, temp);
+   for (i = 0; i < count; i++) {
+      dst[i] = temp[i*2];
+   }
+}
+
+static void
+put_row_z32f(struct gl_context *ctx, struct gl_renderbuffer *z32frb, GLuint count,
+             GLint x, GLint y, const void *values, const GLubyte *mask)
+{
+   struct gl_renderbuffer *dsrb = z32frb->Wrapped;
+   const GLfloat *src = (const GLfloat *) values;
+   GLfloat *dst = (GLfloat *) dsrb->GetPointer(ctx, dsrb, x, y);
+   ASSERT(z32frb->DataType == GL_FLOAT);
+   ASSERT(dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+   ASSERT(dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+   if (dst) {
+      /* direct access */
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         if (!mask || mask[i]) {
+            dst[i*2] = src[i];
+         }
+      }
+   }
+   else {
+      /* get, modify, put */
+      GLfloat temp[MAX_WIDTH*2];
+      GLuint i;
+      dsrb->GetRow(ctx, dsrb, count, x, y, temp);
+      for (i = 0; i < count; i++) {
+         if (!mask || mask[i]) {
+            temp[i*2] = src[i];
+         }
+      }
+      dsrb->PutRow(ctx, dsrb, count, x, y, temp, mask);
+   }
+}
+
+static void
+put_mono_row_z32f(struct gl_context *ctx, struct gl_renderbuffer *z32frb, GLuint count,
+                  GLint x, GLint y, const void *value, const GLubyte *mask)
+{
+   struct gl_renderbuffer *dsrb = z32frb->Wrapped;
+   GLfloat *dst = (GLfloat *) dsrb->GetPointer(ctx, dsrb, x, y);
+   ASSERT(z32frb->DataType == GL_FLOAT);
+   ASSERT(dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+   ASSERT(dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+   if (dst) {
+      /* direct access */
+      GLuint i;
+      const GLfloat val = *(GLfloat*)value;
+      for (i = 0; i < count; i++) {
+         if (!mask || mask[i]) {
+            dst[i*2] = val;
+         }
+      }
+   }
+   else {
+      /* get, modify, put */
+      GLfloat temp[MAX_WIDTH*2];
+      GLuint i;
+      const GLfloat val = *(GLfloat *)value;
+      dsrb->GetRow(ctx, dsrb, count, x, y, temp);
+      for (i = 0; i < count; i++) {
+         if (!mask || mask[i]) {
+            temp[i*2] = val;
+         }
+      }
+      dsrb->PutRow(ctx, dsrb, count, x, y, temp, mask);
+   }
+}
+
+static void
+put_values_z32f(struct gl_context *ctx, struct gl_renderbuffer *z32frb, GLuint count,
+                const GLint x[], const GLint y[],
+                const void *values, const GLubyte *mask)
+{
+   struct gl_renderbuffer *dsrb = z32frb->Wrapped;
+   const GLfloat *src = (const GLfloat *) values;
+   ASSERT(z32frb->DataType == GL_FLOAT);
+   ASSERT(dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+   ASSERT(dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+   if (dsrb->GetPointer(ctx, dsrb, 0, 0)) {
+      /* direct access */
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         if (!mask || mask[i]) {
+            GLfloat *dst = (GLfloat *) dsrb->GetPointer(ctx, dsrb, x[i], y[i]);
+            *dst = src[i];
+         }
+      }
+   }
+   else {
+      /* get, modify, put */
+      GLfloat temp[MAX_WIDTH*2];
+      GLuint i;
+      dsrb->GetValues(ctx, dsrb, count, x, y, temp);
+      for (i = 0; i < count; i++) {
+         if (!mask || mask[i]) {
+            temp[i*2] = src[i];
+         }
+      }
+      dsrb->PutValues(ctx, dsrb, count, x, y, temp, mask);
+   }
+}
+
+static void
+put_mono_values_z32f(struct gl_context *ctx, struct gl_renderbuffer *z32frb,
+                     GLuint count, const GLint x[], const GLint y[],
+                     const void *value, const GLubyte *mask)
+{
+   struct gl_renderbuffer *dsrb = z32frb->Wrapped;
+   GLfloat temp[MAX_WIDTH*2];
+   GLuint i;
+   const GLfloat val = *(GLfloat *)value;
+   ASSERT(z32frb->DataType == GL_FLOAT);
+   ASSERT(dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+   ASSERT(dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+   /* get, modify, put */
+   dsrb->GetValues(ctx, dsrb, count, x, y, temp);
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+         temp[i*2] = val;
+      }
+   }
+   dsrb->PutValues(ctx, dsrb, count, x, y, temp, mask);
+}
+
+
+/**
+ * Wrap the given GL_DEPTH_STENCIL renderbuffer so that it acts like
+ * a depth renderbuffer.
+ * \return new depth renderbuffer
+ */
+struct gl_renderbuffer *
+_mesa_new_z32f_renderbuffer_wrapper(struct gl_context *ctx,
+                                    struct gl_renderbuffer *dsrb)
+{
+   struct gl_renderbuffer *z32frb;
+
+   ASSERT(dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+   ASSERT(dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+
+   z32frb = ctx->Driver.NewRenderbuffer(ctx, 0);
+   if (!z32frb)
+      return NULL;
+
+   /* NOTE: need to do manual refcounting here */
+   z32frb->Wrapped = dsrb;
+   dsrb->RefCount++;
+
+   z32frb->Name = dsrb->Name;
+   z32frb->RefCount = 0;
+   z32frb->Width = dsrb->Width;
+   z32frb->Height = dsrb->Height;
+   z32frb->RowStride = dsrb->RowStride;
+   z32frb->InternalFormat = GL_DEPTH_COMPONENT32F;
+   z32frb->Format = MESA_FORMAT_Z32_FLOAT;
+   z32frb->_BaseFormat = GL_DEPTH_COMPONENT;
+   z32frb->DataType = GL_FLOAT;
+   z32frb->Data = NULL;
+   z32frb->Delete = delete_wrapper;
+   z32frb->AllocStorage = alloc_wrapper_storage;
+   z32frb->GetPointer = nop_get_pointer;
+   z32frb->GetRow = get_row_z32f;
+   z32frb->GetValues = get_values_z32f;
+   z32frb->PutRow = put_row_z32f;
+   z32frb->PutRowRGB = NULL;
+   z32frb->PutMonoRow = put_mono_row_z32f;
+   z32frb->PutValues = put_values_z32f;
+   z32frb->PutMonoValues = put_mono_values_z32f;
+
+   return z32frb;
+}
+
+
 /*======================================================================
  * Stencil wrapper around depth/stencil renderbuffer
  */
@@ -402,16 +613,22 @@ get_row_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count,
            GLint x, GLint y, void *values)
 {
    struct gl_renderbuffer *dsrb = s8rb->Wrapped;
-   GLuint temp[MAX_WIDTH], i;
+   GLuint temp[MAX_WIDTH*2], i;
    GLubyte *dst = (GLubyte *) values;
    const GLuint *src = (const GLuint *) dsrb->GetPointer(ctx, dsrb, x, y);
    ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE);
-   ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT);
+   ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT ||
+          dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
    if (!src) {
       dsrb->GetRow(ctx, dsrb, count, x, y, temp);
       src = temp;
    }
-   if (dsrb->Format == MESA_FORMAT_Z24_S8) {
+   if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+      for (i = 0; i < count; i++) {
+         dst[i] = src[i*2+1] & 0xff;
+      }
+   }
+   else if (dsrb->Format == MESA_FORMAT_Z24_S8) {
       for (i = 0; i < count; i++) {
          dst[i] = src[i] & 0xff;
       }
@@ -429,14 +646,20 @@ get_values_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count
               const GLint x[], const GLint y[], void *values)
 {
    struct gl_renderbuffer *dsrb = s8rb->Wrapped;
-   GLuint temp[MAX_WIDTH], i;
+   GLuint temp[MAX_WIDTH*2], i;
    GLubyte *dst = (GLubyte *) values;
    ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE);
-   ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT);
+   ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT ||
+          dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
    ASSERT(count <= MAX_WIDTH);
    /* don't bother trying direct access */
    dsrb->GetValues(ctx, dsrb, count, x, y, temp);
-   if (dsrb->Format == MESA_FORMAT_Z24_S8) {
+   if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+      for (i = 0; i < count; i++) {
+         dst[i] = temp[i*2+1] & 0xff;
+      }
+   }
+   else if (dsrb->Format == MESA_FORMAT_Z24_S8) {
       for (i = 0; i < count; i++) {
          dst[i] = temp[i] & 0xff;
       }
@@ -457,11 +680,19 @@ put_row_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count,
    const GLubyte *src = (const GLubyte *) values;
    GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x, y);
    ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE);
-   ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT);
+   ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT ||
+          dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
    if (dst) {
       /* direct access */
       GLuint i;
-      if (dsrb->Format == MESA_FORMAT_Z24_S8) {
+      if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+         for (i = 0; i < count; i++) {
+            if (!mask || mask[i]) {
+               dst[i*2+1] = src[i];
+            }
+         }
+      }
+      else if (dsrb->Format == MESA_FORMAT_Z24_S8) {
          for (i = 0; i < count; i++) {
             if (!mask || mask[i]) {
                dst[i] = (dst[i] & 0xffffff00) | src[i];
@@ -479,9 +710,16 @@ put_row_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count,
    }
    else {
       /* get, modify, put */
-      GLuint temp[MAX_WIDTH], i;
+      GLuint temp[MAX_WIDTH*2], i;
       dsrb->GetRow(ctx, dsrb, count, x, y, temp);
-      if (dsrb->Format == MESA_FORMAT_Z24_S8) {
+      if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+         for (i = 0; i < count; i++) {
+            if (!mask || mask[i]) {
+               temp[i*2+1] = src[i];
+            }
+         }
+      }
+      else if (dsrb->Format == MESA_FORMAT_Z24_S8) {
          for (i = 0; i < count; i++) {
             if (!mask || mask[i]) {
                temp[i] = (temp[i] & 0xffffff00) | src[i];
@@ -508,11 +746,19 @@ put_mono_row_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint cou
    const GLubyte val = *((GLubyte *) value);
    GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x, y);
    ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE);
-   ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT);
+   ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT ||
+          dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
    if (dst) {
       /* direct access */
       GLuint i;
-      if (dsrb->Format == MESA_FORMAT_Z24_S8) {
+      if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+         for (i = 0; i < count; i++) {
+            if (!mask || mask[i]) {
+               dst[i*2+1] = val;
+            }
+         }
+      }
+      else if (dsrb->Format == MESA_FORMAT_Z24_S8) {
          for (i = 0; i < count; i++) {
             if (!mask || mask[i]) {
                dst[i] = (dst[i] & 0xffffff00) | val;
@@ -530,9 +776,16 @@ put_mono_row_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint cou
    }
    else {
       /* get, modify, put */
-      GLuint temp[MAX_WIDTH], i;
+      GLuint temp[MAX_WIDTH*2], i;
       dsrb->GetRow(ctx, dsrb, count, x, y, temp);
-      if (dsrb->Format == MESA_FORMAT_Z24_S8) {
+      if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+         for (i = 0; i < count; i++) {
+            if (!mask || mask[i]) {
+               temp[i*2+1] = val;
+            }
+         }
+      }
+      else if (dsrb->Format == MESA_FORMAT_Z24_S8) {
          for (i = 0; i < count; i++) {
             if (!mask || mask[i]) {
                temp[i] = (temp[i] & 0xffffff00) | val;
@@ -559,11 +812,20 @@ put_values_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count
    struct gl_renderbuffer *dsrb = s8rb->Wrapped;
    const GLubyte *src = (const GLubyte *) values;
    ASSERT(s8rb->DataType == GL_UNSIGNED_BYTE);
-   ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT);
+   ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT ||
+          dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
    if (dsrb->GetPointer(ctx, dsrb, 0, 0)) {
       /* direct access */
       GLuint i;
-      if (dsrb->Format == MESA_FORMAT_Z24_S8) {
+      if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+         for (i = 0; i < count; i++) {
+            if (!mask || mask[i]) {
+               GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x[i], y[i]);
+               dst[1] = src[i];
+            }
+         }
+      }
+      else if (dsrb->Format == MESA_FORMAT_Z24_S8) {
          for (i = 0; i < count; i++) {
             if (!mask || mask[i]) {
                GLuint *dst = (GLuint *) dsrb->GetPointer(ctx, dsrb, x[i], y[i]);
@@ -583,9 +845,16 @@ put_values_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint count
    }
    else {
       /* get, modify, put */
-      GLuint temp[MAX_WIDTH], i;
+      GLuint temp[MAX_WIDTH*2], i;
       dsrb->GetValues(ctx, dsrb, count, x, y, temp);
-      if (dsrb->Format == MESA_FORMAT_Z24_S8) {
+      if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+         for (i = 0; i < count; i++) {
+            if (!mask || mask[i]) {
+               temp[i*2+1] = src[i];
+            }
+         }
+      }
+      else if (dsrb->Format == MESA_FORMAT_Z24_S8) {
          for (i = 0; i < count; i++) {
             if (!mask || mask[i]) {
                temp[i] = (temp[i] & 0xffffff00) | src[i];
@@ -610,11 +879,18 @@ put_mono_values_s8(struct gl_context *ctx, struct gl_renderbuffer *s8rb, GLuint
                    const void *value, const GLubyte *mask)
 {
    struct gl_renderbuffer *dsrb = s8rb->Wrapped;
-   GLuint temp[MAX_WIDTH], i;
+   GLuint temp[MAX_WIDTH*2], i;
    const GLubyte val = *((GLubyte *) value);
    /* get, modify, put */
    dsrb->GetValues(ctx, dsrb, count, x, y, temp);
-   if (dsrb->Format == MESA_FORMAT_Z24_S8) {
+   if (dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+      for (i = 0; i < count; i++) {
+         if (!mask || mask[i]) {
+            temp[i*2+1] = val;
+         }
+      }
+   }
+   else if (dsrb->Format == MESA_FORMAT_Z24_S8) {
       for (i = 0; i < count; i++) {
          if (!mask || mask[i]) {
             temp[i] = (temp[i] & 0xffffff00) | val;
@@ -644,8 +920,10 @@ _mesa_new_s8_renderbuffer_wrapper(struct gl_context *ctx, struct gl_renderbuffer
    struct gl_renderbuffer *s8rb;
 
    ASSERT(dsrb->Format == MESA_FORMAT_Z24_S8 ||
-          dsrb->Format == MESA_FORMAT_S8_Z24);
-   ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT);
+          dsrb->Format == MESA_FORMAT_S8_Z24 ||
+          dsrb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
+   ASSERT(dsrb->DataType == GL_UNSIGNED_INT_24_8_EXT ||
+          dsrb->DataType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
 
    s8rb = ctx->Driver.NewRenderbuffer(ctx, 0);
    if (!s8rb)
diff --git a/mesalib/src/mesa/main/depthstencil.h b/mesalib/src/mesa/main/depthstencil.h
index a86f54d96..b47a2e482 100644
--- a/mesalib/src/mesa/main/depthstencil.h
+++ b/mesalib/src/mesa/main/depthstencil.h
@@ -1,57 +1,62 @@
-/*

- * Mesa 3-D graphics library

- * Version:  6.5

- *

- * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-#ifndef DEPTHSTENCIL_H

-#define DEPTHSTENCIL_H

-

-struct gl_context;

-

-extern struct gl_renderbuffer *

-_mesa_new_z24_renderbuffer_wrapper(struct gl_context *ctx,

-                                   struct gl_renderbuffer *dsrb);

-

-

-extern struct gl_renderbuffer *

-_mesa_new_s8_renderbuffer_wrapper(struct gl_context *ctx,

-                                  struct gl_renderbuffer *dsrb);

-

-

-extern void

-_mesa_extract_stencil(struct gl_context *ctx,

-                      struct gl_renderbuffer *dsRb,

-                      struct gl_renderbuffer *stencilRb);

-

-

-extern void

-_mesa_insert_stencil(struct gl_context *ctx,

-                     struct gl_renderbuffer *dsRb,

-                     struct gl_renderbuffer *stencilRb);

-

-

-extern void

-_mesa_promote_stencil(struct gl_context *ctx, struct gl_renderbuffer *stencilRb);

-

-

-#endif /* DEPTHSTENCIL_H */

+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#ifndef DEPTHSTENCIL_H
+#define DEPTHSTENCIL_H
+
+struct gl_context;
+
+extern struct gl_renderbuffer *
+_mesa_new_z24_renderbuffer_wrapper(struct gl_context *ctx,
+                                   struct gl_renderbuffer *dsrb);
+
+
+extern struct gl_renderbuffer *
+_mesa_new_z32f_renderbuffer_wrapper(struct gl_context *ctx,
+                                    struct gl_renderbuffer *dsrb);
+
+
+extern struct gl_renderbuffer *
+_mesa_new_s8_renderbuffer_wrapper(struct gl_context *ctx,
+                                  struct gl_renderbuffer *dsrb);
+
+
+extern void
+_mesa_extract_stencil(struct gl_context *ctx,
+                      struct gl_renderbuffer *dsRb,
+                      struct gl_renderbuffer *stencilRb);
+
+
+extern void
+_mesa_insert_stencil(struct gl_context *ctx,
+                     struct gl_renderbuffer *dsRb,
+                     struct gl_renderbuffer *stencilRb);
+
+
+extern void
+_mesa_promote_stencil(struct gl_context *ctx, struct gl_renderbuffer *stencilRb);
+
+
+#endif /* DEPTHSTENCIL_H */
diff --git a/mesalib/src/mesa/main/fbobject.c b/mesalib/src/mesa/main/fbobject.c
index 8cc3fd49a..84969360d 100644
--- a/mesalib/src/mesa/main/fbobject.c
+++ b/mesalib/src/mesa/main/fbobject.c
@@ -1131,6 +1131,16 @@ _mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
          return GL_DEPTH_STENCIL_EXT;
       else
          return 0;
+   case GL_DEPTH_COMPONENT32F:
+      if (ctx->Extensions.ARB_depth_buffer_float)
+         return GL_DEPTH_COMPONENT;
+      else
+         return 0;
+   case GL_DEPTH32F_STENCIL8:
+      if (ctx->Extensions.ARB_depth_buffer_float)
+         return GL_DEPTH_STENCIL;
+      else
+         return 0;
    case GL_RED:
    case GL_R8:
    case GL_R16:
@@ -2266,6 +2276,15 @@ _mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
             /* special cases */
             *params = GL_INDEX;
          }
+         else if (format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+            /* depends on the attachment parameter */
+            if (attachment == GL_STENCIL_ATTACHMENT) {
+               *params = GL_INDEX;
+            }
+            else {
+               *params = GL_FLOAT;
+            }
+         }
          else {
             *params = _mesa_get_format_datatype(format);
          }
@@ -2584,6 +2603,10 @@ _mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
       }
    }
 
+   if (!mask) {
+      return;
+   }
+
    ASSERT(ctx->Driver.BlitFramebuffer);
    ctx->Driver.BlitFramebuffer(ctx,
                                srcX0, srcY0, srcX1, srcY1,
diff --git a/mesalib/src/mesa/main/formats.c b/mesalib/src/mesa/main/formats.c
index e88ba4397..f58b19756 100644
--- a/mesalib/src/mesa/main/formats.c
+++ b/mesalib/src/mesa/main/formats.c
@@ -1091,6 +1091,25 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
       0, 0, 0, 0, 0,
       1, 1, 4
    },
+   /* ARB_depth_buffer_float */
+   {
+      MESA_FORMAT_Z32_FLOAT,       /* Name */
+      "MESA_FORMAT_Z32_FLOAT",     /* StrName */
+      GL_DEPTH_COMPONENT,          /* BaseFormat */
+      GL_FLOAT,                    /* DataType */
+      0, 0, 0, 0,                  /* Red/Green/Blue/AlphaBits */
+      0, 0, 0, 32, 0,              /* Lum/Int/Index/Depth/StencilBits */
+      1, 1, 4                      /* BlockWidth/Height,Bytes */
+   },
+   {
+      MESA_FORMAT_Z32_FLOAT_X24S8, /* Name */
+      "MESA_FORMAT_Z32_FLOAT_X24S8", /* StrName */
+      GL_DEPTH_STENCIL,            /* BaseFormat */
+      GL_NONE /* XXX */,           /* DataType */
+      0, 0, 0, 0,                  /* Red/Green/Blue/AlphaBits */
+      0, 0, 0, 32, 8,              /* Lum/Int/Index/Depth/StencilBits */
+      1, 1, 8                      /* BlockWidth/Height,Bytes */
+   },
 };
 
 
@@ -1654,6 +1673,16 @@ _mesa_format_to_type_and_comps(gl_format format,
       *comps = 1;
       return;
 
+   case MESA_FORMAT_Z32_FLOAT:
+      *datatype = GL_FLOAT;
+      *comps = 1;
+      return;
+
+   case MESA_FORMAT_Z32_FLOAT_X24S8:
+      *datatype = GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
+      *comps = 1;
+      return;
+
    case MESA_FORMAT_DUDV8:
       *datatype = GL_BYTE;
       *comps = 2;
diff --git a/mesalib/src/mesa/main/formats.h b/mesalib/src/mesa/main/formats.h
index 0640bbc4a..5b8c01781 100644
--- a/mesalib/src/mesa/main/formats.h
+++ b/mesalib/src/mesa/main/formats.h
@@ -209,6 +209,9 @@ typedef enum
    MESA_FORMAT_RGB9_E5_FLOAT,
    MESA_FORMAT_R11_G11_B10_FLOAT,
 
+   MESA_FORMAT_Z32_FLOAT,
+   MESA_FORMAT_Z32_FLOAT_X24S8,
+
    MESA_FORMAT_COUNT
 } gl_format;
 
diff --git a/mesalib/src/mesa/main/framebuffer.c b/mesalib/src/mesa/main/framebuffer.c
index 66c9bd910..6e2ce7421 100644
--- a/mesalib/src/mesa/main/framebuffer.c
+++ b/mesalib/src/mesa/main/framebuffer.c
@@ -631,8 +631,14 @@ _mesa_update_depth_buffer(struct gl_context *ctx,
           || fb->_DepthBuffer->Wrapped != depthRb
           || _mesa_get_format_base_format(fb->_DepthBuffer->Format) != GL_DEPTH_COMPONENT) {
          /* need to update wrapper */
-         struct gl_renderbuffer *wrapper
-            = _mesa_new_z24_renderbuffer_wrapper(ctx, depthRb);
+         struct gl_renderbuffer *wrapper;
+
+         if (depthRb->Format == MESA_FORMAT_Z32_FLOAT_X24S8) {
+            wrapper = _mesa_new_z32f_renderbuffer_wrapper(ctx, depthRb);
+         }
+         else {
+            wrapper = _mesa_new_z24_renderbuffer_wrapper(ctx, depthRb);
+         }
          _mesa_reference_renderbuffer(&fb->_DepthBuffer, wrapper);
          ASSERT(fb->_DepthBuffer->Wrapped == depthRb);
       }
diff --git a/mesalib/src/mesa/main/image.c b/mesalib/src/mesa/main/image.c
index a5cd5ac03..37127dcb7 100644
--- a/mesalib/src/mesa/main/image.c
+++ b/mesalib/src/mesa/main/image.c
@@ -1,1935 +1,1949 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.5

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-/**

- * \file image.c

- * Image handling.

- */

-

-

-#include "glheader.h"

-#include "colormac.h"

-#include "image.h"

-#include "imports.h"

-#include "macros.h"

-#include "mfeatures.h"

-#include "mtypes.h"

-

-

-/**

- * NOTE:

- * Normally, BYTE_TO_FLOAT(0) returns 0.00392  That causes problems when

- * we later convert the float to a packed integer value (such as for

- * GL_RGB5_A1) because we'll wind up with a non-zero value.

- *

- * We redefine the macros here so zero is handled correctly.

- */

-#undef BYTE_TO_FLOAT

-#define BYTE_TO_FLOAT(B)    ((B) == 0 ? 0.0F : ((2.0F * (B) + 1.0F) * (1.0F/255.0F)))

-

-#undef SHORT_TO_FLOAT

-#define SHORT_TO_FLOAT(S)   ((S) == 0 ? 0.0F : ((2.0F * (S) + 1.0F) * (1.0F/65535.0F)))

-

-

-

-/** Compute ceiling of integer quotient of A divided by B. */

-#define CEILING( A, B )  ( (A) % (B) == 0 ? (A)/(B) : (A)/(B)+1 )

-

-

-/**

- * \return GL_TRUE if type is packed pixel type, GL_FALSE otherwise.

- */

-GLboolean

-_mesa_type_is_packed(GLenum type)

-{

-   switch (type) {

-   case GL_UNSIGNED_BYTE_3_3_2:

-   case GL_UNSIGNED_BYTE_2_3_3_REV:

-   case MESA_UNSIGNED_BYTE_4_4:

-   case GL_UNSIGNED_SHORT_5_6_5:

-   case GL_UNSIGNED_SHORT_5_6_5_REV:

-   case GL_UNSIGNED_SHORT_4_4_4_4:

-   case GL_UNSIGNED_SHORT_4_4_4_4_REV:

-   case GL_UNSIGNED_SHORT_5_5_5_1:

-   case GL_UNSIGNED_SHORT_1_5_5_5_REV:

-   case GL_UNSIGNED_INT_8_8_8_8:

-   case GL_UNSIGNED_INT_8_8_8_8_REV:

-   case GL_UNSIGNED_INT_10_10_10_2:

-   case GL_UNSIGNED_INT_2_10_10_10_REV:

-   case GL_UNSIGNED_SHORT_8_8_MESA:

-   case GL_UNSIGNED_SHORT_8_8_REV_MESA:

-   case GL_UNSIGNED_INT_24_8_EXT:

-   case GL_UNSIGNED_INT_5_9_9_9_REV:

-   case GL_UNSIGNED_INT_10F_11F_11F_REV:

-      return GL_TRUE;

-   }

-

-   return GL_FALSE;

-}

-

-

-

-/**

- * Flip the order of the 2 bytes in each word in the given array.

- *

- * \param p array.

- * \param n number of words.

- */

-void

-_mesa_swap2( GLushort *p, GLuint n )

-{

-   GLuint i;

-   for (i = 0; i < n; i++) {

-      p[i] = (p[i] >> 8) | ((p[i] << 8) & 0xff00);

-   }

-}

-

-

-

-/*

- * Flip the order of the 4 bytes in each word in the given array.

- */

-void

-_mesa_swap4( GLuint *p, GLuint n )

-{

-   GLuint i, a, b;

-   for (i = 0; i < n; i++) {

-      b = p[i];

-      a =  (b >> 24)

-	| ((b >> 8) & 0xff00)

-	| ((b << 8) & 0xff0000)

-	| ((b << 24) & 0xff000000);

-      p[i] = a;

-   }

-}

-

-

-/**

- * Get the size of a GL data type.

- *

- * \param type GL data type.

- *

- * \return the size, in bytes, of the given data type, 0 if a GL_BITMAP, or -1

- * if an invalid type enum.

- */

-GLint

-_mesa_sizeof_type( GLenum type )

-{

-   switch (type) {

-      case GL_BITMAP:

-	 return 0;

-      case GL_UNSIGNED_BYTE:

-         return sizeof(GLubyte);

-      case GL_BYTE:

-	 return sizeof(GLbyte);

-      case GL_UNSIGNED_SHORT:

-	 return sizeof(GLushort);

-      case GL_SHORT:

-	 return sizeof(GLshort);

-      case GL_UNSIGNED_INT:

-	 return sizeof(GLuint);

-      case GL_INT:

-	 return sizeof(GLint);

-      case GL_FLOAT:

-	 return sizeof(GLfloat);

-      case GL_DOUBLE:

-	 return sizeof(GLdouble);

-      case GL_HALF_FLOAT_ARB:

-	 return sizeof(GLhalfARB);

-      case GL_FIXED:

-	 return sizeof(GLfixed);

-      default:

-         return -1;

-   }

-}

-

-

-/**

- * Same as _mesa_sizeof_type() but also accepting the packed pixel

- * format data types.

- */

-GLint

-_mesa_sizeof_packed_type( GLenum type )

-{

-   switch (type) {

-      case GL_BITMAP:

-	 return 0;

-      case GL_UNSIGNED_BYTE:

-         return sizeof(GLubyte);

-      case GL_BYTE:

-	 return sizeof(GLbyte);

-      case GL_UNSIGNED_SHORT:

-	 return sizeof(GLushort);

-      case GL_SHORT:

-	 return sizeof(GLshort);

-      case GL_UNSIGNED_INT:

-	 return sizeof(GLuint);

-      case GL_INT:

-	 return sizeof(GLint);

-      case GL_HALF_FLOAT_ARB:

-	 return sizeof(GLhalfARB);

-      case GL_FLOAT:

-	 return sizeof(GLfloat);

-      case GL_UNSIGNED_BYTE_3_3_2:

-         return sizeof(GLubyte);

-      case GL_UNSIGNED_BYTE_2_3_3_REV:

-         return sizeof(GLubyte);

-      case MESA_UNSIGNED_BYTE_4_4:

-         return sizeof(GLubyte);

-      case GL_UNSIGNED_SHORT_5_6_5:

-         return sizeof(GLushort);

-      case GL_UNSIGNED_SHORT_5_6_5_REV:

-         return sizeof(GLushort);

-      case GL_UNSIGNED_SHORT_4_4_4_4:

-         return sizeof(GLushort);

-      case GL_UNSIGNED_SHORT_4_4_4_4_REV:

-         return sizeof(GLushort);

-      case GL_UNSIGNED_SHORT_5_5_5_1:

-         return sizeof(GLushort);

-      case GL_UNSIGNED_SHORT_1_5_5_5_REV:

-         return sizeof(GLushort);

-      case GL_UNSIGNED_INT_8_8_8_8:

-         return sizeof(GLuint);

-      case GL_UNSIGNED_INT_8_8_8_8_REV:

-         return sizeof(GLuint);

-      case GL_UNSIGNED_INT_10_10_10_2:

-         return sizeof(GLuint);

-      case GL_UNSIGNED_INT_2_10_10_10_REV:

-         return sizeof(GLuint);

-      case GL_UNSIGNED_SHORT_8_8_MESA:

-      case GL_UNSIGNED_SHORT_8_8_REV_MESA:

-         return sizeof(GLushort);      

-      case GL_UNSIGNED_INT_24_8_EXT:

-         return sizeof(GLuint);

-      case GL_UNSIGNED_INT_5_9_9_9_REV:

-         return sizeof(GLuint);

-      case GL_UNSIGNED_INT_10F_11F_11F_REV:

-         return sizeof(GLuint);

-      default:

-         return -1;

-   }

-}

-

-

-/**

- * Get the number of components in a pixel format.

- *

- * \param format pixel format.

- *

- * \return the number of components in the given format, or -1 if a bad format.

- */

-GLint

-_mesa_components_in_format( GLenum format )

-{

-   switch (format) {

-      case GL_COLOR_INDEX:

-      case GL_COLOR_INDEX1_EXT:

-      case GL_COLOR_INDEX2_EXT:

-      case GL_COLOR_INDEX4_EXT:

-      case GL_COLOR_INDEX8_EXT:

-      case GL_COLOR_INDEX12_EXT:

-      case GL_COLOR_INDEX16_EXT:

-      case GL_STENCIL_INDEX:

-      case GL_DEPTH_COMPONENT:

-      case GL_RED:

-      case GL_RED_INTEGER_EXT:

-      case GL_GREEN:

-      case GL_GREEN_INTEGER_EXT:

-      case GL_BLUE:

-      case GL_BLUE_INTEGER_EXT:

-      case GL_ALPHA:

-      case GL_ALPHA_INTEGER_EXT:

-      case GL_LUMINANCE:

-      case GL_LUMINANCE_INTEGER_EXT:

-      case GL_INTENSITY:

-         return 1;

-      case GL_LUMINANCE_ALPHA:

-      case GL_LUMINANCE_ALPHA_INTEGER_EXT:

-      case GL_RG:

-	 return 2;

-      case GL_RGB:

-      case GL_RGB_INTEGER_EXT:

-	 return 3;

-      case GL_RGBA:

-      case GL_RGBA_INTEGER_EXT:

-	 return 4;

-      case GL_BGR:

-	 return 3;

-      case GL_BGRA:

-	 return 4;

-      case GL_ABGR_EXT:

-         return 4;

-      case GL_YCBCR_MESA:

-         return 2;

-      case GL_DEPTH_STENCIL_EXT:

-         return 2;

-      case GL_DUDV_ATI:

-      case GL_DU8DV8_ATI:

-         return 2;

-      default:

-         return -1;

-   }

-}

-

-

-/**

- * Get the bytes per pixel of pixel format type pair.

- *

- * \param format pixel format.

- * \param type pixel type.

- *

- * \return bytes per pixel, or -1 if a bad format or type was given.

- */

-GLint

-_mesa_bytes_per_pixel( GLenum format, GLenum type )

-{

-   GLint comps = _mesa_components_in_format( format );

-   if (comps < 0)

-      return -1;

-

-   switch (type) {

-      case GL_BITMAP:

-         return 0;  /* special case */

-      case GL_BYTE:

-      case GL_UNSIGNED_BYTE:

-         return comps * sizeof(GLubyte);

-      case GL_SHORT:

-      case GL_UNSIGNED_SHORT:

-         return comps * sizeof(GLshort);

-      case GL_INT:

-      case GL_UNSIGNED_INT:

-         return comps * sizeof(GLint);

-      case GL_FLOAT:

-         return comps * sizeof(GLfloat);

-      case GL_HALF_FLOAT_ARB:

-         return comps * sizeof(GLhalfARB);

-      case GL_UNSIGNED_BYTE_3_3_2:

-      case GL_UNSIGNED_BYTE_2_3_3_REV:

-         if (format == GL_RGB || format == GL_BGR ||

-             format == GL_RGB_INTEGER_EXT || format == GL_BGR_INTEGER_EXT)

-            return sizeof(GLubyte);

-         else

-            return -1;  /* error */

-      case GL_UNSIGNED_SHORT_5_6_5:

-      case GL_UNSIGNED_SHORT_5_6_5_REV:

-         if (format == GL_RGB || format == GL_BGR ||

-             format == GL_RGB_INTEGER_EXT || format == GL_BGR_INTEGER_EXT)

-            return sizeof(GLushort);

-         else

-            return -1;  /* error */

-      case GL_UNSIGNED_SHORT_4_4_4_4:

-      case GL_UNSIGNED_SHORT_4_4_4_4_REV:

-      case GL_UNSIGNED_SHORT_5_5_5_1:

-      case GL_UNSIGNED_SHORT_1_5_5_5_REV:

-         if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT ||

-             format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT)

-            return sizeof(GLushort);

-         else

-            return -1;

-      case GL_UNSIGNED_INT_8_8_8_8:

-      case GL_UNSIGNED_INT_8_8_8_8_REV:

-      case GL_UNSIGNED_INT_10_10_10_2:

-      case GL_UNSIGNED_INT_2_10_10_10_REV:

-         if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT ||

-             format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT)

-            return sizeof(GLuint);

-         else

-            return -1;

-      case GL_UNSIGNED_SHORT_8_8_MESA:

-      case GL_UNSIGNED_SHORT_8_8_REV_MESA:

-         if (format == GL_YCBCR_MESA)

-            return sizeof(GLushort);

-         else

-            return -1;

-      case GL_UNSIGNED_INT_24_8_EXT:

-         if (format == GL_DEPTH_STENCIL_EXT)

-            return sizeof(GLuint);

-         else

-            return -1;

-      case GL_UNSIGNED_INT_5_9_9_9_REV:

-         if (format == GL_RGB)

-            return sizeof(GLuint);

-         else

-            return -1;

-      case GL_UNSIGNED_INT_10F_11F_11F_REV:

-         if (format == GL_RGB)

-            return sizeof(GLuint);

-         else

-            return -1;

-      default:

-         return -1;

-   }

-}

-

-

-/**

- * Test for a legal pixel format and type.

- *

- * \param format pixel format.

- * \param type pixel type.

- *

- * \return GL_TRUE if the given pixel format and type are legal, or GL_FALSE

- * otherwise.

- */

-GLboolean

-_mesa_is_legal_format_and_type(const struct gl_context *ctx,

-                               GLenum format, GLenum type)

-{

-   switch (format) {

-      case GL_COLOR_INDEX:

-      case GL_STENCIL_INDEX:

-         switch (type) {

-            case GL_BITMAP:

-            case GL_BYTE:

-            case GL_UNSIGNED_BYTE:

-            case GL_SHORT:

-            case GL_UNSIGNED_SHORT:

-            case GL_INT:

-            case GL_UNSIGNED_INT:

-            case GL_FLOAT:

-               return GL_TRUE;

-            case GL_HALF_FLOAT_ARB:

-               return ctx->Extensions.ARB_half_float_pixel;

-            default:

-               return GL_FALSE;

-         }

-      case GL_RED:

-      case GL_GREEN:

-      case GL_BLUE:

-      case GL_ALPHA:

-#if 0 /* not legal!  see table 3.6 of the 1.5 spec */

-      case GL_INTENSITY:

-#endif

-      case GL_LUMINANCE:

-      case GL_LUMINANCE_ALPHA:

-      case GL_DEPTH_COMPONENT:

-         switch (type) {

-            case GL_BYTE:

-            case GL_UNSIGNED_BYTE:

-            case GL_SHORT:

-            case GL_UNSIGNED_SHORT:

-            case GL_INT:

-            case GL_UNSIGNED_INT:

-            case GL_FLOAT:

-               return GL_TRUE;

-            case GL_HALF_FLOAT_ARB:

-               return ctx->Extensions.ARB_half_float_pixel;

-            default:

-               return GL_FALSE;

-         }

-      case GL_RG:

-	 if (!ctx->Extensions.ARB_texture_rg)

-	    return GL_FALSE;

-

-         switch (type) {

-            case GL_BYTE:

-            case GL_UNSIGNED_BYTE:

-            case GL_SHORT:

-            case GL_UNSIGNED_SHORT:

-            case GL_INT:

-            case GL_UNSIGNED_INT:

-            case GL_FLOAT:

-               return GL_TRUE;

-            case GL_HALF_FLOAT_ARB:

-               return ctx->Extensions.ARB_half_float_pixel;

-            default:

-               return GL_FALSE;

-         }

-      case GL_RGB:

-         switch (type) {

-            case GL_BYTE:

-            case GL_UNSIGNED_BYTE:

-            case GL_SHORT:

-            case GL_UNSIGNED_SHORT:

-            case GL_INT:

-            case GL_UNSIGNED_INT:

-            case GL_FLOAT:

-            case GL_UNSIGNED_BYTE_3_3_2:

-            case GL_UNSIGNED_BYTE_2_3_3_REV:

-            case GL_UNSIGNED_SHORT_5_6_5:

-            case GL_UNSIGNED_SHORT_5_6_5_REV:

-               return GL_TRUE;

-            case GL_HALF_FLOAT_ARB:

-               return ctx->Extensions.ARB_half_float_pixel;

-            case GL_UNSIGNED_INT_5_9_9_9_REV:

-               return ctx->Extensions.EXT_texture_shared_exponent;

-            case GL_UNSIGNED_INT_10F_11F_11F_REV:

-               return ctx->Extensions.EXT_packed_float;

-            default:

-               return GL_FALSE;

-         }

-      case GL_BGR:

-         switch (type) {

-            /* NOTE: no packed types are supported with BGR.  That's

-             * intentional, according to the GL spec.

-             */

-            case GL_BYTE:

-            case GL_UNSIGNED_BYTE:

-            case GL_SHORT:

-            case GL_UNSIGNED_SHORT:

-            case GL_INT:

-            case GL_UNSIGNED_INT:

-            case GL_FLOAT:

-               return GL_TRUE;

-            case GL_HALF_FLOAT_ARB:

-               return ctx->Extensions.ARB_half_float_pixel;

-            default:

-               return GL_FALSE;

-         }

-      case GL_RGBA:

-      case GL_BGRA:

-      case GL_ABGR_EXT:

-         switch (type) {

-            case GL_BYTE:

-            case GL_UNSIGNED_BYTE:

-            case GL_SHORT:

-            case GL_UNSIGNED_SHORT:

-            case GL_INT:

-            case GL_UNSIGNED_INT:

-            case GL_FLOAT:

-            case GL_UNSIGNED_SHORT_4_4_4_4:

-            case GL_UNSIGNED_SHORT_4_4_4_4_REV:

-            case GL_UNSIGNED_SHORT_5_5_5_1:

-            case GL_UNSIGNED_SHORT_1_5_5_5_REV:

-            case GL_UNSIGNED_INT_8_8_8_8:

-            case GL_UNSIGNED_INT_8_8_8_8_REV:

-            case GL_UNSIGNED_INT_10_10_10_2:

-            case GL_UNSIGNED_INT_2_10_10_10_REV:

-               return GL_TRUE;

-            case GL_HALF_FLOAT_ARB:

-               return ctx->Extensions.ARB_half_float_pixel;

-            default:

-               return GL_FALSE;

-         }

-      case GL_YCBCR_MESA:

-         if (type == GL_UNSIGNED_SHORT_8_8_MESA ||

-             type == GL_UNSIGNED_SHORT_8_8_REV_MESA)

-            return GL_TRUE;

-         else

-            return GL_FALSE;

-      case GL_DEPTH_STENCIL_EXT:

-         if (ctx->Extensions.EXT_packed_depth_stencil

-             && type == GL_UNSIGNED_INT_24_8_EXT)

-            return GL_TRUE;

-         else

-            return GL_FALSE;

-      case GL_DUDV_ATI:

-      case GL_DU8DV8_ATI:

-         switch (type) {

-            case GL_BYTE:

-            case GL_UNSIGNED_BYTE:

-            case GL_SHORT:

-            case GL_UNSIGNED_SHORT:

-            case GL_INT:

-            case GL_UNSIGNED_INT:

-            case GL_FLOAT:

-               return GL_TRUE;

-            default:

-               return GL_FALSE;

-         }

-

-      /* integer-valued formats */

-      case GL_RED_INTEGER_EXT:

-      case GL_GREEN_INTEGER_EXT:

-      case GL_BLUE_INTEGER_EXT:

-      case GL_ALPHA_INTEGER_EXT:

-         switch (type) {

-            case GL_BYTE:

-            case GL_UNSIGNED_BYTE:

-            case GL_SHORT:

-            case GL_UNSIGNED_SHORT:

-            case GL_INT:

-            case GL_UNSIGNED_INT:

-               return ctx->Extensions.EXT_texture_integer;

-            default:

-               return GL_FALSE;

-         }

-

-      case GL_RGB_INTEGER_EXT:

-         switch (type) {

-            case GL_BYTE:

-            case GL_UNSIGNED_BYTE:

-            case GL_SHORT:

-            case GL_UNSIGNED_SHORT:

-            case GL_INT:

-            case GL_UNSIGNED_INT:

-            case GL_UNSIGNED_BYTE_3_3_2:

-            case GL_UNSIGNED_BYTE_2_3_3_REV:

-            case GL_UNSIGNED_SHORT_5_6_5:

-            case GL_UNSIGNED_SHORT_5_6_5_REV:

-               return ctx->Extensions.EXT_texture_integer;

-            default:

-               return GL_FALSE;

-         }

-

-      case GL_BGR_INTEGER_EXT:

-         switch (type) {

-            case GL_BYTE:

-            case GL_UNSIGNED_BYTE:

-            case GL_SHORT:

-            case GL_UNSIGNED_SHORT:

-            case GL_INT:

-            case GL_UNSIGNED_INT:

-            /* NOTE: no packed formats w/ BGR format */

-               return ctx->Extensions.EXT_texture_integer;

-            default:

-               return GL_FALSE;

-         }

-

-      case GL_RGBA_INTEGER_EXT:

-      case GL_BGRA_INTEGER_EXT:

-         switch (type) {

-            case GL_BYTE:

-            case GL_UNSIGNED_BYTE:

-            case GL_SHORT:

-            case GL_UNSIGNED_SHORT:

-            case GL_INT:

-            case GL_UNSIGNED_INT:

-            case GL_UNSIGNED_SHORT_4_4_4_4:

-            case GL_UNSIGNED_SHORT_4_4_4_4_REV:

-            case GL_UNSIGNED_SHORT_5_5_5_1:

-            case GL_UNSIGNED_SHORT_1_5_5_5_REV:

-            case GL_UNSIGNED_INT_8_8_8_8:

-            case GL_UNSIGNED_INT_8_8_8_8_REV:

-            case GL_UNSIGNED_INT_10_10_10_2:

-            case GL_UNSIGNED_INT_2_10_10_10_REV:

-               return ctx->Extensions.EXT_texture_integer;

-            default:

-               return GL_FALSE;

-         }

-

-      case GL_LUMINANCE_INTEGER_EXT:

-      case GL_LUMINANCE_ALPHA_INTEGER_EXT:

-         switch (type) {

-            case GL_BYTE:

-            case GL_UNSIGNED_BYTE:

-            case GL_SHORT:

-            case GL_UNSIGNED_SHORT:

-            case GL_INT:

-            case GL_UNSIGNED_INT:

-               return ctx->Extensions.EXT_texture_integer;

-            default:

-               return GL_FALSE;

-         }

-

-      default:

-         ; /* fall-through */

-   }

-   return GL_FALSE;

-}

-

-

-/**

- * Test if the given image format is a color/RGBA format (i.e., not color

- * index, depth, stencil, etc).

- * \param format  the image format value (may by an internal texture format)

- * \return GL_TRUE if its a color/RGBA format, GL_FALSE otherwise.

- */

-GLboolean

-_mesa_is_color_format(GLenum format)

-{

-   switch (format) {

-      case GL_RED:

-      case GL_GREEN:

-      case GL_BLUE:

-      case GL_ALPHA:

-      case GL_ALPHA4:

-      case GL_ALPHA8:

-      case GL_ALPHA12:

-      case GL_ALPHA16:

-      case 1:

-      case GL_LUMINANCE:

-      case GL_LUMINANCE4:

-      case GL_LUMINANCE8:

-      case GL_LUMINANCE12:

-      case GL_LUMINANCE16:

-      case 2:

-      case GL_LUMINANCE_ALPHA:

-      case GL_LUMINANCE4_ALPHA4:

-      case GL_LUMINANCE6_ALPHA2:

-      case GL_LUMINANCE8_ALPHA8:

-      case GL_LUMINANCE12_ALPHA4:

-      case GL_LUMINANCE12_ALPHA12:

-      case GL_LUMINANCE16_ALPHA16:

-      case GL_INTENSITY:

-      case GL_INTENSITY4:

-      case GL_INTENSITY8:

-      case GL_INTENSITY12:

-      case GL_INTENSITY16:

-      case GL_R8:

-      case GL_R16:

-      case GL_RG:

-      case GL_RG8:

-      case GL_RG16:

-      case 3:

-      case GL_RGB:

-      case GL_BGR:

-      case GL_R3_G3_B2:

-      case GL_RGB4:

-      case GL_RGB5:

-      case GL_RGB8:

-      case GL_RGB10:

-      case GL_RGB12:

-      case GL_RGB16:

-      case 4:

-      case GL_ABGR_EXT:

-      case GL_RGBA:

-      case GL_BGRA:

-      case GL_RGBA2:

-      case GL_RGBA4:

-      case GL_RGB5_A1:

-      case GL_RGBA8:

-      case GL_RGB10_A2:

-      case GL_RGBA12:

-      case GL_RGBA16:

-      /* float texture formats */

-      case GL_ALPHA16F_ARB:

-      case GL_ALPHA32F_ARB:

-      case GL_LUMINANCE16F_ARB:

-      case GL_LUMINANCE32F_ARB:

-      case GL_LUMINANCE_ALPHA16F_ARB:

-      case GL_LUMINANCE_ALPHA32F_ARB:

-      case GL_INTENSITY16F_ARB:

-      case GL_INTENSITY32F_ARB:

-      case GL_R16F:

-      case GL_R32F:

-      case GL_RG16F:

-      case GL_RG32F:

-      case GL_RGB16F_ARB:

-      case GL_RGB32F_ARB:

-      case GL_RGBA16F_ARB:

-      case GL_RGBA32F_ARB:

-      /* compressed formats */

-      case GL_COMPRESSED_ALPHA:

-      case GL_COMPRESSED_LUMINANCE:

-      case GL_COMPRESSED_LUMINANCE_ALPHA:

-      case GL_COMPRESSED_INTENSITY:

-      case GL_COMPRESSED_RED:

-      case GL_COMPRESSED_RG:

-      case GL_COMPRESSED_RGB:

-      case GL_COMPRESSED_RGBA:

-      case GL_RGB_S3TC:

-      case GL_RGB4_S3TC:

-      case GL_RGBA_S3TC:

-      case GL_RGBA4_S3TC:

-      case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:

-      case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:

-      case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:

-      case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:

-      case GL_COMPRESSED_RGB_FXT1_3DFX:

-      case GL_COMPRESSED_RGBA_FXT1_3DFX:

-#if FEATURE_EXT_texture_sRGB

-      case GL_SRGB_EXT:

-      case GL_SRGB8_EXT:

-      case GL_SRGB_ALPHA_EXT:

-      case GL_SRGB8_ALPHA8_EXT:

-      case GL_SLUMINANCE_ALPHA_EXT:

-      case GL_SLUMINANCE8_ALPHA8_EXT:

-      case GL_SLUMINANCE_EXT:

-      case GL_SLUMINANCE8_EXT:

-      case GL_COMPRESSED_SRGB_EXT:

-      case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:

-      case GL_COMPRESSED_SRGB_ALPHA_EXT:

-      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:

-      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:

-      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:

-      case GL_COMPRESSED_SLUMINANCE_EXT:

-      case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:

-#endif /* FEATURE_EXT_texture_sRGB */

-      case GL_COMPRESSED_RED_RGTC1:

-      case GL_COMPRESSED_SIGNED_RED_RGTC1:

-      case GL_COMPRESSED_RG_RGTC2:

-      case GL_COMPRESSED_SIGNED_RG_RGTC2:

-      case GL_COMPRESSED_LUMINANCE_LATC1_EXT:

-      case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:

-      case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:

-      case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:

-      case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:

-      /* generic integer formats */

-      case GL_RED_INTEGER_EXT:

-      case GL_GREEN_INTEGER_EXT:

-      case GL_BLUE_INTEGER_EXT:

-      case GL_ALPHA_INTEGER_EXT:

-      case GL_RGB_INTEGER_EXT:

-      case GL_RGBA_INTEGER_EXT:

-      case GL_BGR_INTEGER_EXT:

-      case GL_BGRA_INTEGER_EXT:

-      case GL_LUMINANCE_INTEGER_EXT:

-      case GL_LUMINANCE_ALPHA_INTEGER_EXT:

-      /* sized integer formats */

-      case GL_RGBA32UI_EXT:

-      case GL_RGB32UI_EXT:

-      case GL_ALPHA32UI_EXT:

-      case GL_INTENSITY32UI_EXT:

-      case GL_LUMINANCE32UI_EXT:

-      case GL_LUMINANCE_ALPHA32UI_EXT:

-      case GL_RGBA16UI_EXT:

-      case GL_RGB16UI_EXT:

-      case GL_ALPHA16UI_EXT:

-      case GL_INTENSITY16UI_EXT:

-      case GL_LUMINANCE16UI_EXT:

-      case GL_LUMINANCE_ALPHA16UI_EXT:

-      case GL_RGBA8UI_EXT:

-      case GL_RGB8UI_EXT:

-      case GL_ALPHA8UI_EXT:

-      case GL_INTENSITY8UI_EXT:

-      case GL_LUMINANCE8UI_EXT:

-      case GL_LUMINANCE_ALPHA8UI_EXT:

-      case GL_RGBA32I_EXT:

-      case GL_RGB32I_EXT:

-      case GL_ALPHA32I_EXT:

-      case GL_INTENSITY32I_EXT:

-      case GL_LUMINANCE32I_EXT:

-      case GL_LUMINANCE_ALPHA32I_EXT:

-      case GL_RGBA16I_EXT:

-      case GL_RGB16I_EXT:

-      case GL_ALPHA16I_EXT:

-      case GL_INTENSITY16I_EXT:

-      case GL_LUMINANCE16I_EXT:

-      case GL_LUMINANCE_ALPHA16I_EXT:

-      case GL_RGBA8I_EXT:

-      case GL_RGB8I_EXT:

-      case GL_ALPHA8I_EXT:

-      case GL_INTENSITY8I_EXT:

-      case GL_LUMINANCE8I_EXT:

-      case GL_LUMINANCE_ALPHA8I_EXT:

-      /* signed, normalized texture formats */

-      case GL_RED_SNORM:

-      case GL_R8_SNORM:

-      case GL_R16_SNORM:

-      case GL_RG_SNORM:

-      case GL_RG8_SNORM:

-      case GL_RG16_SNORM:

-      case GL_RGB_SNORM:

-      case GL_RGB8_SNORM:

-      case GL_RGB16_SNORM:

-      case GL_RGBA_SNORM:

-      case GL_RGBA8_SNORM:

-      case GL_RGBA16_SNORM:

-      case GL_ALPHA_SNORM:

-      case GL_ALPHA8_SNORM:

-      case GL_ALPHA16_SNORM:

-      case GL_LUMINANCE_SNORM:

-      case GL_LUMINANCE8_SNORM:

-      case GL_LUMINANCE16_SNORM:

-      case GL_LUMINANCE_ALPHA_SNORM:

-      case GL_LUMINANCE8_ALPHA8_SNORM:

-      case GL_LUMINANCE16_ALPHA16_SNORM:

-      case GL_INTENSITY_SNORM:

-      case GL_INTENSITY8_SNORM:

-      case GL_INTENSITY16_SNORM:

-      case GL_RGB9_E5:

-      case GL_R11F_G11F_B10F:

-         return GL_TRUE;

-      case GL_YCBCR_MESA:  /* not considered to be RGB */

-         /* fall-through */

-      default:

-         return GL_FALSE;

-   }

-}

-

-

-/**

- * Test if the given image format is a color index format.

- */

-GLboolean

-_mesa_is_index_format(GLenum format)

-{

-   switch (format) {

-      case GL_COLOR_INDEX:

-      case GL_COLOR_INDEX1_EXT:

-      case GL_COLOR_INDEX2_EXT:

-      case GL_COLOR_INDEX4_EXT:

-      case GL_COLOR_INDEX8_EXT:

-      case GL_COLOR_INDEX12_EXT:

-      case GL_COLOR_INDEX16_EXT:

-         return GL_TRUE;

-      default:

-         return GL_FALSE;

-   }

-}

-

-

-/**

- * Test if the given image format is a depth component format.

- */

-GLboolean

-_mesa_is_depth_format(GLenum format)

-{

-   switch (format) {

-      case GL_DEPTH_COMPONENT:

-      case GL_DEPTH_COMPONENT16:

-      case GL_DEPTH_COMPONENT24:

-      case GL_DEPTH_COMPONENT32:

-         return GL_TRUE;

-      default:

-         return GL_FALSE;

-   }

-}

-

-

-/**

- * Test if the given image format is a stencil format.

- */

-GLboolean

-_mesa_is_stencil_format(GLenum format)

-{

-   switch (format) {

-      case GL_STENCIL_INDEX:

-      case GL_DEPTH_STENCIL:

-         return GL_TRUE;

-      default:

-         return GL_FALSE;

-   }

-}

-

-

-/**

- * Test if the given image format is a YCbCr format.

- */

-GLboolean

-_mesa_is_ycbcr_format(GLenum format)

-{

-   switch (format) {

-      case GL_YCBCR_MESA:

-         return GL_TRUE;

-      default:

-         return GL_FALSE;

-   }

-}

-

-

-/**

- * Test if the given image format is a depth+stencil format.

- */

-GLboolean

-_mesa_is_depthstencil_format(GLenum format)

-{

-   switch (format) {

-      case GL_DEPTH24_STENCIL8_EXT:

-      case GL_DEPTH_STENCIL_EXT:

-         return GL_TRUE;

-      default:

-         return GL_FALSE;

-   }

-}

-

-

-/**

- * Test if the given image format is a depth or stencil format.

- */

-GLboolean

-_mesa_is_depth_or_stencil_format(GLenum format)

-{

-   switch (format) {

-      case GL_DEPTH_COMPONENT:

-      case GL_DEPTH_COMPONENT16:

-      case GL_DEPTH_COMPONENT24:

-      case GL_DEPTH_COMPONENT32:

-      case GL_STENCIL_INDEX:

-      case GL_STENCIL_INDEX1_EXT:

-      case GL_STENCIL_INDEX4_EXT:

-      case GL_STENCIL_INDEX8_EXT:

-      case GL_STENCIL_INDEX16_EXT:

-      case GL_DEPTH_STENCIL_EXT:

-      case GL_DEPTH24_STENCIL8_EXT:

-         return GL_TRUE;

-      default:

-         return GL_FALSE;

-   }

-}

-

-

-/**

- * Test if the given image format is a dudv format.

- */

-GLboolean

-_mesa_is_dudv_format(GLenum format)

-{

-   switch (format) {

-      case GL_DUDV_ATI:

-      case GL_DU8DV8_ATI:

-         return GL_TRUE;

-      default:

-         return GL_FALSE;

-   }

-}

-

-

-/**

- * Test if the given format is an integer (non-normalized) format.

- */

-GLboolean

-_mesa_is_integer_format(GLenum format)

-{

-   switch (format) {

-   /* generic integer formats */

-   case GL_RED_INTEGER_EXT:

-   case GL_GREEN_INTEGER_EXT:

-   case GL_BLUE_INTEGER_EXT:

-   case GL_ALPHA_INTEGER_EXT:

-   case GL_RGB_INTEGER_EXT:

-   case GL_RGBA_INTEGER_EXT:

-   case GL_BGR_INTEGER_EXT:

-   case GL_BGRA_INTEGER_EXT:

-   case GL_LUMINANCE_INTEGER_EXT:

-   case GL_LUMINANCE_ALPHA_INTEGER_EXT:

-   /* specific integer formats */

-   case GL_RGBA32UI_EXT:

-   case GL_RGB32UI_EXT:

-   case GL_ALPHA32UI_EXT:

-   case GL_INTENSITY32UI_EXT:

-   case GL_LUMINANCE32UI_EXT:

-   case GL_LUMINANCE_ALPHA32UI_EXT:

-   case GL_RGBA16UI_EXT:

-   case GL_RGB16UI_EXT:

-   case GL_ALPHA16UI_EXT:

-   case GL_INTENSITY16UI_EXT:

-   case GL_LUMINANCE16UI_EXT:

-   case GL_LUMINANCE_ALPHA16UI_EXT:

-   case GL_RGBA8UI_EXT:

-   case GL_RGB8UI_EXT:

-   case GL_ALPHA8UI_EXT:

-   case GL_INTENSITY8UI_EXT:

-   case GL_LUMINANCE8UI_EXT:

-   case GL_LUMINANCE_ALPHA8UI_EXT:

-   case GL_RGBA32I_EXT:

-   case GL_RGB32I_EXT:

-   case GL_ALPHA32I_EXT:

-   case GL_INTENSITY32I_EXT:

-   case GL_LUMINANCE32I_EXT:

-   case GL_LUMINANCE_ALPHA32I_EXT:

-   case GL_RGBA16I_EXT:

-   case GL_RGB16I_EXT:

-   case GL_ALPHA16I_EXT:

-   case GL_INTENSITY16I_EXT:

-   case GL_LUMINANCE16I_EXT:

-   case GL_LUMINANCE_ALPHA16I_EXT:

-   case GL_RGBA8I_EXT:

-   case GL_RGB8I_EXT:

-   case GL_ALPHA8I_EXT:

-   case GL_INTENSITY8I_EXT:

-   case GL_LUMINANCE8I_EXT:

-   case GL_LUMINANCE_ALPHA8I_EXT:

-      return GL_TRUE;

-   default:

-      return GL_FALSE;

-   }

-}

-

-

-/**

- * Test if an image format is a supported compressed format.

- * \param format the internal format token provided by the user.

- * \return GL_TRUE if compressed, GL_FALSE if uncompressed

- */

-GLboolean

-_mesa_is_compressed_format(struct gl_context *ctx, GLenum format)

-{

-   switch (format) {

-   case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:

-   case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:

-   case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:

-   case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:

-      return ctx->Extensions.EXT_texture_compression_s3tc;

-   case GL_RGB_S3TC:

-   case GL_RGB4_S3TC:

-   case GL_RGBA_S3TC:

-   case GL_RGBA4_S3TC:

-      return ctx->Extensions.S3_s3tc;

-   case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:

-   case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:

-   case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:

-   case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:

-      return ctx->Extensions.EXT_texture_sRGB

-         && ctx->Extensions.EXT_texture_compression_s3tc;

-   case GL_COMPRESSED_RGB_FXT1_3DFX:

-   case GL_COMPRESSED_RGBA_FXT1_3DFX:

-      return ctx->Extensions.TDFX_texture_compression_FXT1;

-   case GL_COMPRESSED_RED_RGTC1:

-   case GL_COMPRESSED_SIGNED_RED_RGTC1:

-   case GL_COMPRESSED_RG_RGTC2:

-   case GL_COMPRESSED_SIGNED_RG_RGTC2:

-      return ctx->Extensions.ARB_texture_compression_rgtc;

-   case GL_COMPRESSED_LUMINANCE_LATC1_EXT:

-   case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:

-   case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:

-   case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:

-      return ctx->Extensions.EXT_texture_compression_latc;

-   case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:

-      return ctx->Extensions.ATI_texture_compression_3dc;

-   default:

-      return GL_FALSE;

-   }

-}

-

-

-/**

- * Return the address of a specific pixel in an image (1D, 2D or 3D).

- *

- * Pixel unpacking/packing parameters are observed according to \p packing.

- *

- * \param dimensions either 1, 2 or 3 to indicate dimensionality of image

- * \param image  starting address of image data

- * \param width  the image width

- * \param height  theimage height

- * \param format  the pixel format

- * \param type  the pixel data type

- * \param packing  the pixelstore attributes

- * \param img  which image in the volume (0 for 1D or 2D images)

- * \param row  row of pixel in the image (0 for 1D images)

- * \param column column of pixel in the image

- * 

- * \return address of pixel on success, or NULL on error.

- *

- * \sa gl_pixelstore_attrib.

- */

-GLvoid *

-_mesa_image_address( GLuint dimensions,

-                     const struct gl_pixelstore_attrib *packing,

-                     const GLvoid *image,

-                     GLsizei width, GLsizei height,

-                     GLenum format, GLenum type,

-                     GLint img, GLint row, GLint column )

-{

-   GLint alignment;        /* 1, 2 or 4 */

-   GLint pixels_per_row;

-   GLint rows_per_image;

-   GLint skiprows;

-   GLint skippixels;

-   GLint skipimages;       /* for 3-D volume images */

-   GLubyte *pixel_addr;

-

-   ASSERT(dimensions >= 1 && dimensions <= 3);

-

-   alignment = packing->Alignment;

-   if (packing->RowLength > 0) {

-      pixels_per_row = packing->RowLength;

-   }

-   else {

-      pixels_per_row = width;

-   }

-   if (packing->ImageHeight > 0) {

-      rows_per_image = packing->ImageHeight;

-   }

-   else {

-      rows_per_image = height;

-   }

-

-   skippixels = packing->SkipPixels;

-   /* Note: SKIP_ROWS _is_ used for 1D images */

-   skiprows = packing->SkipRows;

-   /* Note: SKIP_IMAGES is only used for 3D images */

-   skipimages = (dimensions == 3) ? packing->SkipImages : 0;

-

-   if (type == GL_BITMAP) {

-      /* BITMAP data */

-      GLint comp_per_pixel;   /* components per pixel */

-      GLint bytes_per_comp;   /* bytes per component */

-      GLint bytes_per_row;

-      GLint bytes_per_image;

-

-      /* Compute bytes per component */

-      bytes_per_comp = _mesa_sizeof_packed_type( type );

-      if (bytes_per_comp < 0) {

-         return NULL;

-      }

-

-      /* Compute number of components per pixel */

-      comp_per_pixel = _mesa_components_in_format( format );

-      if (comp_per_pixel < 0) {

-         return NULL;

-      }

-

-      bytes_per_row = alignment

-                    * CEILING( comp_per_pixel*pixels_per_row, 8*alignment );

-

-      bytes_per_image = bytes_per_row * rows_per_image;

-

-      pixel_addr = (GLubyte *) image

-                 + (skipimages + img) * bytes_per_image

-                 + (skiprows + row) * bytes_per_row

-                 + (skippixels + column) / 8;

-   }

-   else {

-      /* Non-BITMAP data */

-      GLint bytes_per_pixel, bytes_per_row, remainder, bytes_per_image;

-      GLint topOfImage;

-

-      bytes_per_pixel = _mesa_bytes_per_pixel( format, type );

-

-      /* The pixel type and format should have been error checked earlier */

-      assert(bytes_per_pixel > 0);

-

-      bytes_per_row = pixels_per_row * bytes_per_pixel;

-      remainder = bytes_per_row % alignment;

-      if (remainder > 0)

-         bytes_per_row += (alignment - remainder);

-

-      ASSERT(bytes_per_row % alignment == 0);

-

-      bytes_per_image = bytes_per_row * rows_per_image;

-

-      if (packing->Invert) {

-         /* set pixel_addr to the last row */

-         topOfImage = bytes_per_row * (height - 1);

-         bytes_per_row = -bytes_per_row;

-      }

-      else {

-         topOfImage = 0;

-      }

-

-      /* compute final pixel address */

-      pixel_addr = (GLubyte *) image

-                 + (skipimages + img) * bytes_per_image

-                 + topOfImage

-                 + (skiprows + row) * bytes_per_row

-                 + (skippixels + column) * bytes_per_pixel;

-   }

-

-   return (GLvoid *) pixel_addr;

-}

-

-

-GLvoid *

-_mesa_image_address1d( const struct gl_pixelstore_attrib *packing,

-                       const GLvoid *image,

-                       GLsizei width,

-                       GLenum format, GLenum type,

-                       GLint column )

-{

-   return _mesa_image_address(1, packing, image, width, 1,

-                              format, type, 0, 0, column);

-}

-

-

-GLvoid *

-_mesa_image_address2d( const struct gl_pixelstore_attrib *packing,

-                       const GLvoid *image,

-                       GLsizei width, GLsizei height,

-                       GLenum format, GLenum type,

-                       GLint row, GLint column )

-{

-   return _mesa_image_address(2, packing, image, width, height,

-                              format, type, 0, row, column);

-}

-

-

-GLvoid *

-_mesa_image_address3d( const struct gl_pixelstore_attrib *packing,

-                       const GLvoid *image,

-                       GLsizei width, GLsizei height,

-                       GLenum format, GLenum type,

-                       GLint img, GLint row, GLint column )

-{

-   return _mesa_image_address(3, packing, image, width, height,

-                              format, type, img, row, column);

-}

-

-

-

-/**

- * Compute the stride (in bytes) between image rows.

- *

- * \param packing the pixelstore attributes

- * \param width image width.

- * \param format pixel format.

- * \param type pixel data type.

- * 

- * \return the stride in bytes for the given parameters, or -1 if error

- */

-GLint

-_mesa_image_row_stride( const struct gl_pixelstore_attrib *packing,

-                        GLint width, GLenum format, GLenum type )

-{

-   GLint bytesPerRow, remainder;

-

-   ASSERT(packing);

-

-   if (type == GL_BITMAP) {

-      if (packing->RowLength == 0) {

-         bytesPerRow = (width + 7) / 8;

-      }

-      else {

-         bytesPerRow = (packing->RowLength + 7) / 8;

-      }

-   }

-   else {

-      /* Non-BITMAP data */

-      const GLint bytesPerPixel = _mesa_bytes_per_pixel(format, type);

-      if (bytesPerPixel <= 0)

-         return -1;  /* error */

-      if (packing->RowLength == 0) {

-         bytesPerRow = bytesPerPixel * width;

-      }

-      else {

-         bytesPerRow = bytesPerPixel * packing->RowLength;

-      }

-   }

-

-   remainder = bytesPerRow % packing->Alignment;

-   if (remainder > 0) {

-      bytesPerRow += (packing->Alignment - remainder);

-   }

-

-   if (packing->Invert) {

-      /* negate the bytes per row (negative row stride) */

-      bytesPerRow = -bytesPerRow;

-   }

-

-   return bytesPerRow;

-}

-

-

-/*

- * Compute the stride between images in a 3D texture (in bytes) for the given

- * pixel packing parameters and image width, format and type.

- */

-GLint

-_mesa_image_image_stride( const struct gl_pixelstore_attrib *packing,

-                          GLint width, GLint height,

-                          GLenum format, GLenum type )

-{

-   GLint bytesPerRow, bytesPerImage, remainder;

-

-   ASSERT(packing);

-

-   if (type == GL_BITMAP) {

-      if (packing->RowLength == 0) {

-         bytesPerRow = (width + 7) / 8;

-      }

-      else {

-         bytesPerRow = (packing->RowLength + 7) / 8;

-      }

-   }

-   else {

-      const GLint bytesPerPixel = _mesa_bytes_per_pixel(format, type);

-

-      if (bytesPerPixel <= 0)

-         return -1;  /* error */

-      if (packing->RowLength == 0) {

-         bytesPerRow = bytesPerPixel * width;

-      }

-      else {

-         bytesPerRow = bytesPerPixel * packing->RowLength;

-      }

-   }

-

-   remainder = bytesPerRow % packing->Alignment;

-   if (remainder > 0)

-      bytesPerRow += (packing->Alignment - remainder);

-

-   if (packing->ImageHeight == 0)

-      bytesPerImage = bytesPerRow * height;

-   else

-      bytesPerImage = bytesPerRow * packing->ImageHeight;

-

-   return bytesPerImage;

-}

-

-

-

-/**

- * "Expand" a bitmap from 1-bit per pixel to 8-bits per pixel.

- * This is typically used to convert a bitmap into a GLubyte/pixel texture.

- * "On" bits will set texels to \p onValue.

- * "Off" bits will not modify texels.

- * \param width  src bitmap width in pixels

- * \param height  src bitmap height in pixels

- * \param unpack  bitmap unpacking state

- * \param bitmap  the src bitmap data

- * \param destBuffer  start of dest buffer

- * \param destStride  row stride in dest buffer

- * \param onValue  if bit is 1, set destBuffer pixel to this value

- */

-void

-_mesa_expand_bitmap(GLsizei width, GLsizei height,

-                    const struct gl_pixelstore_attrib *unpack,

-                    const GLubyte *bitmap,

-                    GLubyte *destBuffer, GLint destStride,

-                    GLubyte onValue)

-{

-   const GLubyte *srcRow = (const GLubyte *)

-      _mesa_image_address2d(unpack, bitmap, width, height,

-                            GL_COLOR_INDEX, GL_BITMAP, 0, 0);

-   const GLint srcStride = _mesa_image_row_stride(unpack, width,

-                                                  GL_COLOR_INDEX, GL_BITMAP);

-   GLint row, col;

-

-#define SET_PIXEL(COL, ROW) \

-   destBuffer[(ROW) * destStride + (COL)] = onValue;

-

-   for (row = 0; row < height; row++) {

-      const GLubyte *src = srcRow;

-

-      if (unpack->LsbFirst) {

-         /* Lsb first */

-         GLubyte mask = 1U << (unpack->SkipPixels & 0x7);

-         for (col = 0; col < width; col++) {

-

-            if (*src & mask) {

-               SET_PIXEL(col, row);

-            }

-

-            if (mask == 128U) {

-               src++;

-               mask = 1U;

-            }

-            else {

-               mask = mask << 1;

-            }

-         }

-

-         /* get ready for next row */

-         if (mask != 1)

-            src++;

-      }

-      else {

-         /* Msb first */

-         GLubyte mask = 128U >> (unpack->SkipPixels & 0x7);

-         for (col = 0; col < width; col++) {

-

-            if (*src & mask) {

-               SET_PIXEL(col, row);

-            }

-

-            if (mask == 1U) {

-               src++;

-               mask = 128U;

-            }

-            else {

-               mask = mask >> 1;

-            }

-         }

-

-         /* get ready for next row */

-         if (mask != 128)

-            src++;

-      }

-

-      srcRow += srcStride;

-   } /* row */

-

-#undef SET_PIXEL

-}

-

-

-

-

-/**

- * Convert an array of RGBA colors from one datatype to another.

- * NOTE: src may equal dst.  In that case, we use a temporary buffer.

- */

-void

-_mesa_convert_colors(GLenum srcType, const GLvoid *src,

-                     GLenum dstType, GLvoid *dst,

-                     GLuint count, const GLubyte mask[])

-{

-   GLuint tempBuffer[MAX_WIDTH][4];

-   const GLboolean useTemp = (src == dst);

-

-   ASSERT(srcType != dstType);

-

-   switch (srcType) {

-   case GL_UNSIGNED_BYTE:

-      if (dstType == GL_UNSIGNED_SHORT) {

-         const GLubyte (*src1)[4] = (const GLubyte (*)[4]) src;

-         GLushort (*dst2)[4] = (GLushort (*)[4]) (useTemp ? tempBuffer : dst);

-         GLuint i;

-         for (i = 0; i < count; i++) {

-            if (!mask || mask[i]) {

-               dst2[i][RCOMP] = UBYTE_TO_USHORT(src1[i][RCOMP]);

-               dst2[i][GCOMP] = UBYTE_TO_USHORT(src1[i][GCOMP]);

-               dst2[i][BCOMP] = UBYTE_TO_USHORT(src1[i][BCOMP]);

-               dst2[i][ACOMP] = UBYTE_TO_USHORT(src1[i][ACOMP]);

-            }

-         }

-         if (useTemp)

-            memcpy(dst, tempBuffer, count * 4 * sizeof(GLushort));

-      }

-      else {

-         const GLubyte (*src1)[4] = (const GLubyte (*)[4]) src;

-         GLfloat (*dst4)[4] = (GLfloat (*)[4]) (useTemp ? tempBuffer : dst);

-         GLuint i;

-         ASSERT(dstType == GL_FLOAT);

-         for (i = 0; i < count; i++) {

-            if (!mask || mask[i]) {

-               dst4[i][RCOMP] = UBYTE_TO_FLOAT(src1[i][RCOMP]);

-               dst4[i][GCOMP] = UBYTE_TO_FLOAT(src1[i][GCOMP]);

-               dst4[i][BCOMP] = UBYTE_TO_FLOAT(src1[i][BCOMP]);

-               dst4[i][ACOMP] = UBYTE_TO_FLOAT(src1[i][ACOMP]);

-            }

-         }

-         if (useTemp)

-            memcpy(dst, tempBuffer, count * 4 * sizeof(GLfloat));

-      }

-      break;

-   case GL_UNSIGNED_SHORT:

-      if (dstType == GL_UNSIGNED_BYTE) {

-         const GLushort (*src2)[4] = (const GLushort (*)[4]) src;

-         GLubyte (*dst1)[4] = (GLubyte (*)[4]) (useTemp ? tempBuffer : dst);

-         GLuint i;

-         for (i = 0; i < count; i++) {

-            if (!mask || mask[i]) {

-               dst1[i][RCOMP] = USHORT_TO_UBYTE(src2[i][RCOMP]);

-               dst1[i][GCOMP] = USHORT_TO_UBYTE(src2[i][GCOMP]);

-               dst1[i][BCOMP] = USHORT_TO_UBYTE(src2[i][BCOMP]);

-               dst1[i][ACOMP] = USHORT_TO_UBYTE(src2[i][ACOMP]);

-            }

-         }

-         if (useTemp)

-            memcpy(dst, tempBuffer, count * 4 * sizeof(GLubyte));

-      }

-      else {

-         const GLushort (*src2)[4] = (const GLushort (*)[4]) src;

-         GLfloat (*dst4)[4] = (GLfloat (*)[4]) (useTemp ? tempBuffer : dst);

-         GLuint i;

-         ASSERT(dstType == GL_FLOAT);

-         for (i = 0; i < count; i++) {

-            if (!mask || mask[i]) {

-               dst4[i][RCOMP] = USHORT_TO_FLOAT(src2[i][RCOMP]);

-               dst4[i][GCOMP] = USHORT_TO_FLOAT(src2[i][GCOMP]);

-               dst4[i][BCOMP] = USHORT_TO_FLOAT(src2[i][BCOMP]);

-               dst4[i][ACOMP] = USHORT_TO_FLOAT(src2[i][ACOMP]);

-            }

-         }

-         if (useTemp)

-            memcpy(dst, tempBuffer, count * 4 * sizeof(GLfloat));

-      }

-      break;

-   case GL_FLOAT:

-      if (dstType == GL_UNSIGNED_BYTE) {

-         const GLfloat (*src4)[4] = (const GLfloat (*)[4]) src;

-         GLubyte (*dst1)[4] = (GLubyte (*)[4]) (useTemp ? tempBuffer : dst);

-         GLuint i;

-         for (i = 0; i < count; i++) {

-            if (!mask || mask[i]) {

-               UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][RCOMP], src4[i][RCOMP]);

-               UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][GCOMP], src4[i][GCOMP]);

-               UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][BCOMP], src4[i][BCOMP]);

-               UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][ACOMP], src4[i][ACOMP]);

-            }

-         }

-         if (useTemp)

-            memcpy(dst, tempBuffer, count * 4 * sizeof(GLubyte));

-      }

-      else {

-         const GLfloat (*src4)[4] = (const GLfloat (*)[4]) src;

-         GLushort (*dst2)[4] = (GLushort (*)[4]) (useTemp ? tempBuffer : dst);

-         GLuint i;

-         ASSERT(dstType == GL_UNSIGNED_SHORT);

-         for (i = 0; i < count; i++) {

-            if (!mask || mask[i]) {

-               UNCLAMPED_FLOAT_TO_USHORT(dst2[i][RCOMP], src4[i][RCOMP]);

-               UNCLAMPED_FLOAT_TO_USHORT(dst2[i][GCOMP], src4[i][GCOMP]);

-               UNCLAMPED_FLOAT_TO_USHORT(dst2[i][BCOMP], src4[i][BCOMP]);

-               UNCLAMPED_FLOAT_TO_USHORT(dst2[i][ACOMP], src4[i][ACOMP]);

-            }

-         }

-         if (useTemp)

-            memcpy(dst, tempBuffer, count * 4 * sizeof(GLushort));

-      }

-      break;

-   default:

-      _mesa_problem(NULL, "Invalid datatype in _mesa_convert_colors");

-   }

-}

-

-

-

-

-/**

- * Perform basic clipping for glDrawPixels.  The image's position and size

- * and the unpack SkipPixels and SkipRows are adjusted so that the image

- * region is entirely within the window and scissor bounds.

- * NOTE: this will only work when glPixelZoom is (1, 1) or (1, -1).

- * If Pixel.ZoomY is -1, *destY will be changed to be the first row which

- * we'll actually write.  Beforehand, *destY-1 is the first drawing row.

- *

- * \return  GL_TRUE if image is ready for drawing or

- *          GL_FALSE if image was completely clipped away (draw nothing)

- */

-GLboolean

-_mesa_clip_drawpixels(const struct gl_context *ctx,

-                      GLint *destX, GLint *destY,

-                      GLsizei *width, GLsizei *height,

-                      struct gl_pixelstore_attrib *unpack)

-{

-   const struct gl_framebuffer *buffer = ctx->DrawBuffer;

-

-   if (unpack->RowLength == 0) {

-      unpack->RowLength = *width;

-   }

-

-   ASSERT(ctx->Pixel.ZoomX == 1.0F);

-   ASSERT(ctx->Pixel.ZoomY == 1.0F || ctx->Pixel.ZoomY == -1.0F);

-

-   /* left clipping */

-   if (*destX < buffer->_Xmin) {

-      unpack->SkipPixels += (buffer->_Xmin - *destX);

-      *width -= (buffer->_Xmin - *destX);

-      *destX = buffer->_Xmin;

-   }

-   /* right clipping */

-   if (*destX + *width > buffer->_Xmax)

-      *width -= (*destX + *width - buffer->_Xmax);

-

-   if (*width <= 0)

-      return GL_FALSE;

-

-   if (ctx->Pixel.ZoomY == 1.0F) {

-      /* bottom clipping */

-      if (*destY < buffer->_Ymin) {

-         unpack->SkipRows += (buffer->_Ymin - *destY);

-         *height -= (buffer->_Ymin - *destY);

-         *destY = buffer->_Ymin;

-      }

-      /* top clipping */

-      if (*destY + *height > buffer->_Ymax)

-         *height -= (*destY + *height - buffer->_Ymax);

-   }

-   else { /* upside down */

-      /* top clipping */

-      if (*destY > buffer->_Ymax) {

-         unpack->SkipRows += (*destY - buffer->_Ymax);

-         *height -= (*destY - buffer->_Ymax);

-         *destY = buffer->_Ymax;

-      }

-      /* bottom clipping */

-      if (*destY - *height < buffer->_Ymin)

-         *height -= (buffer->_Ymin - (*destY - *height));

-      /* adjust destY so it's the first row to write to */

-      (*destY)--;

-   }

-

-   if (*height <= 0)

-      return GL_FALSE;

-

-   return GL_TRUE;

-}

-

-

-/**

- * Perform clipping for glReadPixels.  The image's window position

- * and size, and the pack skipPixels, skipRows and rowLength are adjusted

- * so that the image region is entirely within the window bounds.

- * Note: this is different from _mesa_clip_drawpixels() in that the

- * scissor box is ignored, and we use the bounds of the current readbuffer

- * surface.

- *

- * \return  GL_TRUE if region to read is in bounds

- *          GL_FALSE if region is completely out of bounds (nothing to read)

- */

-GLboolean

-_mesa_clip_readpixels(const struct gl_context *ctx,

-                      GLint *srcX, GLint *srcY,

-                      GLsizei *width, GLsizei *height,

-                      struct gl_pixelstore_attrib *pack)

-{

-   const struct gl_framebuffer *buffer = ctx->ReadBuffer;

-

-   if (pack->RowLength == 0) {

-      pack->RowLength = *width;

-   }

-

-   /* left clipping */

-   if (*srcX < 0) {

-      pack->SkipPixels += (0 - *srcX);

-      *width -= (0 - *srcX);

-      *srcX = 0;

-   }

-   /* right clipping */

-   if (*srcX + *width > (GLsizei) buffer->Width)

-      *width -= (*srcX + *width - buffer->Width);

-

-   if (*width <= 0)

-      return GL_FALSE;

-

-   /* bottom clipping */

-   if (*srcY < 0) {

-      pack->SkipRows += (0 - *srcY);

-      *height -= (0 - *srcY);

-      *srcY = 0;

-   }

-   /* top clipping */

-   if (*srcY + *height > (GLsizei) buffer->Height)

-      *height -= (*srcY + *height - buffer->Height);

-

-   if (*height <= 0)

-      return GL_FALSE;

-

-   return GL_TRUE;

-}

-

-

-/**

- * Do clipping for a glCopyTexSubImage call.

- * The framebuffer source region might extend outside the framebuffer

- * bounds.  Clip the source region against the framebuffer bounds and

- * adjust the texture/dest position and size accordingly.

- *

- * \return GL_FALSE if region is totally clipped, GL_TRUE otherwise.

- */

-GLboolean

-_mesa_clip_copytexsubimage(const struct gl_context *ctx,

-                           GLint *destX, GLint *destY,

-                           GLint *srcX, GLint *srcY,

-                           GLsizei *width, GLsizei *height)

-{

-   const struct gl_framebuffer *fb = ctx->ReadBuffer;

-   const GLint srcX0 = *srcX, srcY0 = *srcY;

-

-   if (_mesa_clip_to_region(0, 0, fb->Width, fb->Height,

-                            srcX, srcY, width, height)) {

-      *destX = *destX + *srcX - srcX0;

-      *destY = *destY + *srcY - srcY0;

-

-      return GL_TRUE;

-   }

-   else {

-      return GL_FALSE;

-   }

-}

-

-

-

-/**

- * Clip the rectangle defined by (x, y, width, height) against the bounds

- * specified by [xmin, xmax) and [ymin, ymax).

- * \return GL_FALSE if rect is totally clipped, GL_TRUE otherwise.

- */

-GLboolean

-_mesa_clip_to_region(GLint xmin, GLint ymin,

-                     GLint xmax, GLint ymax,

-                     GLint *x, GLint *y,

-                     GLsizei *width, GLsizei *height )

-{

-   /* left clipping */

-   if (*x < xmin) {

-      *width -= (xmin - *x);

-      *x = xmin;

-   }

-

-   /* right clipping */

-   if (*x + *width > xmax)

-      *width -= (*x + *width - xmax);

-

-   if (*width <= 0)

-      return GL_FALSE;

-

-   /* bottom (or top) clipping */

-   if (*y < ymin) {

-      *height -= (ymin - *y);

-      *y = ymin;

-   }

-

-   /* top (or bottom) clipping */

-   if (*y + *height > ymax)

-      *height -= (*y + *height - ymax);

-

-   if (*height <= 0)

-      return GL_FALSE;

-

-   return GL_TRUE;

-}

-

-

-/**

- * Clip dst coords against Xmax (or Ymax).

- */

-static INLINE void

-clip_right_or_top(GLint *srcX0, GLint *srcX1,

-                  GLint *dstX0, GLint *dstX1,

-                  GLint maxValue)

-{

-   GLfloat t, bias;

-

-   if (*dstX1 > maxValue) {

-      /* X1 outside right edge */

-      ASSERT(*dstX0 < maxValue); /* X0 should be inside right edge */

-      t = (GLfloat) (maxValue - *dstX0) / (GLfloat) (*dstX1 - *dstX0);

-      /* chop off [t, 1] part */

-      ASSERT(t >= 0.0 && t <= 1.0);

-      *dstX1 = maxValue;

-      bias = (*srcX0 < *srcX1) ? 0.5F : -0.5F;

-      *srcX1 = *srcX0 + (GLint) (t * (*srcX1 - *srcX0) + bias);

-   }

-   else if (*dstX0 > maxValue) {

-      /* X0 outside right edge */

-      ASSERT(*dstX1 < maxValue); /* X1 should be inside right edge */

-      t = (GLfloat) (maxValue - *dstX1) / (GLfloat) (*dstX0 - *dstX1);

-      /* chop off [t, 1] part */

-      ASSERT(t >= 0.0 && t <= 1.0);

-      *dstX0 = maxValue;

-      bias = (*srcX0 < *srcX1) ? -0.5F : 0.5F;

-      *srcX0 = *srcX1 + (GLint) (t * (*srcX0 - *srcX1) + bias);

-   }

-}

-

-

-/**

- * Clip dst coords against Xmin (or Ymin).

- */

-static INLINE void

-clip_left_or_bottom(GLint *srcX0, GLint *srcX1,

-                    GLint *dstX0, GLint *dstX1,

-                    GLint minValue)

-{

-   GLfloat t, bias;

-

-   if (*dstX0 < minValue) {

-      /* X0 outside left edge */

-      ASSERT(*dstX1 > minValue); /* X1 should be inside left edge */

-      t = (GLfloat) (minValue - *dstX0) / (GLfloat) (*dstX1 - *dstX0);

-      /* chop off [0, t] part */

-      ASSERT(t >= 0.0 && t <= 1.0);

-      *dstX0 = minValue;

-      bias = (*srcX0 < *srcX1) ? 0.5F : -0.5F; /* flipped??? */

-      *srcX0 = *srcX0 + (GLint) (t * (*srcX1 - *srcX0) + bias);

-   }

-   else if (*dstX1 < minValue) {

-      /* X1 outside left edge */

-      ASSERT(*dstX0 > minValue); /* X0 should be inside left edge */

-      t = (GLfloat) (minValue - *dstX1) / (GLfloat) (*dstX0 - *dstX1);

-      /* chop off [0, t] part */

-      ASSERT(t >= 0.0 && t <= 1.0);

-      *dstX1 = minValue;

-      bias = (*srcX0 < *srcX1) ? 0.5F : -0.5F;

-      *srcX1 = *srcX1 + (GLint) (t * (*srcX0 - *srcX1) + bias);

-   }

-}

-

-

-/**

- * Do clipping of blit src/dest rectangles.

- * The dest rect is clipped against both the buffer bounds and scissor bounds.

- * The src rect is just clipped against the buffer bounds.

- *

- * When either the src or dest rect is clipped, the other is also clipped

- * proportionately!

- *

- * Note that X0 need not be less than X1 (same for Y) for either the source

- * and dest rects.  That makes the clipping a little trickier.

- *

- * \return GL_TRUE if anything is left to draw, GL_FALSE if totally clipped

- */

-GLboolean

-_mesa_clip_blit(struct gl_context *ctx,

-                GLint *srcX0, GLint *srcY0, GLint *srcX1, GLint *srcY1,

-                GLint *dstX0, GLint *dstY0, GLint *dstX1, GLint *dstY1)

-{

-   const GLint srcXmin = 0;

-   const GLint srcXmax = ctx->ReadBuffer->Width;

-   const GLint srcYmin = 0;

-   const GLint srcYmax = ctx->ReadBuffer->Height;

-

-   /* these include scissor bounds */

-   const GLint dstXmin = ctx->DrawBuffer->_Xmin;

-   const GLint dstXmax = ctx->DrawBuffer->_Xmax;

-   const GLint dstYmin = ctx->DrawBuffer->_Ymin;

-   const GLint dstYmax = ctx->DrawBuffer->_Ymax;

-

-   /*

-   printf("PreClipX:  src: %d .. %d  dst: %d .. %d\n",

-          *srcX0, *srcX1, *dstX0, *dstX1);

-   printf("PreClipY:  src: %d .. %d  dst: %d .. %d\n",

-          *srcY0, *srcY1, *dstY0, *dstY1);

-   */

-

-   /* trivial rejection tests */

-   if (*dstX0 == *dstX1)

-      return GL_FALSE; /* no width */

-   if (*dstX0 <= dstXmin && *dstX1 <= dstXmin)

-      return GL_FALSE; /* totally out (left) of bounds */

-   if (*dstX0 >= dstXmax && *dstX1 >= dstXmax)

-      return GL_FALSE; /* totally out (right) of bounds */

-

-   if (*dstY0 == *dstY1)

-      return GL_FALSE;

-   if (*dstY0 <= dstYmin && *dstY1 <= dstYmin)

-      return GL_FALSE;

-   if (*dstY0 >= dstYmax && *dstY1 >= dstYmax)

-      return GL_FALSE;

-

-   if (*srcX0 == *srcX1)

-      return GL_FALSE;

-   if (*srcX0 <= srcXmin && *srcX1 <= srcXmin)

-      return GL_FALSE;

-   if (*srcX0 >= srcXmax && *srcX1 >= srcXmax)

-      return GL_FALSE;

-

-   if (*srcY0 == *srcY1)

-      return GL_FALSE;

-   if (*srcY0 <= srcYmin && *srcY1 <= srcYmin)

-      return GL_FALSE;

-   if (*srcY0 >= srcYmax && *srcY1 >= srcYmax)

-      return GL_FALSE;

-

-   /*

-    * dest clip

-    */

-   clip_right_or_top(srcX0, srcX1, dstX0, dstX1, dstXmax);

-   clip_right_or_top(srcY0, srcY1, dstY0, dstY1, dstYmax);

-   clip_left_or_bottom(srcX0, srcX1, dstX0, dstX1, dstXmin);

-   clip_left_or_bottom(srcY0, srcY1, dstY0, dstY1, dstYmin);

-

-   /*

-    * src clip (just swap src/dst values from above)

-    */

-   clip_right_or_top(dstX0, dstX1, srcX0, srcX1, srcXmax);

-   clip_right_or_top(dstY0, dstY1, srcY0, srcY1, srcYmax);

-   clip_left_or_bottom(dstX0, dstX1, srcX0, srcX1, srcXmin);

-   clip_left_or_bottom(dstY0, dstY1, srcY0, srcY1, srcYmin);

-

-   /*

-   printf("PostClipX: src: %d .. %d  dst: %d .. %d\n",

-          *srcX0, *srcX1, *dstX0, *dstX1);

-   printf("PostClipY: src: %d .. %d  dst: %d .. %d\n",

-          *srcY0, *srcY1, *dstY0, *dstY1);

-   */

-

-   ASSERT(*dstX0 >= dstXmin);

-   ASSERT(*dstX0 <= dstXmax);

-   ASSERT(*dstX1 >= dstXmin);

-   ASSERT(*dstX1 <= dstXmax);

-

-   ASSERT(*dstY0 >= dstYmin);

-   ASSERT(*dstY0 <= dstYmax);

-   ASSERT(*dstY1 >= dstYmin);

-   ASSERT(*dstY1 <= dstYmax);

-

-   ASSERT(*srcX0 >= srcXmin);

-   ASSERT(*srcX0 <= srcXmax);

-   ASSERT(*srcX1 >= srcXmin);

-   ASSERT(*srcX1 <= srcXmax);

-

-   ASSERT(*srcY0 >= srcYmin);

-   ASSERT(*srcY0 <= srcYmax);

-   ASSERT(*srcY1 >= srcYmin);

-   ASSERT(*srcY1 <= srcYmax);

-

-   return GL_TRUE;

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.5
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * \file image.c
+ * Image handling.
+ */
+
+
+#include "glheader.h"
+#include "colormac.h"
+#include "image.h"
+#include "imports.h"
+#include "macros.h"
+#include "mfeatures.h"
+#include "mtypes.h"
+
+
+/**
+ * NOTE:
+ * Normally, BYTE_TO_FLOAT(0) returns 0.00392  That causes problems when
+ * we later convert the float to a packed integer value (such as for
+ * GL_RGB5_A1) because we'll wind up with a non-zero value.
+ *
+ * We redefine the macros here so zero is handled correctly.
+ */
+#undef BYTE_TO_FLOAT
+#define BYTE_TO_FLOAT(B)    ((B) == 0 ? 0.0F : ((2.0F * (B) + 1.0F) * (1.0F/255.0F)))
+
+#undef SHORT_TO_FLOAT
+#define SHORT_TO_FLOAT(S)   ((S) == 0 ? 0.0F : ((2.0F * (S) + 1.0F) * (1.0F/65535.0F)))
+
+
+
+/** Compute ceiling of integer quotient of A divided by B. */
+#define CEILING( A, B )  ( (A) % (B) == 0 ? (A)/(B) : (A)/(B)+1 )
+
+
+/**
+ * \return GL_TRUE if type is packed pixel type, GL_FALSE otherwise.
+ */
+GLboolean
+_mesa_type_is_packed(GLenum type)
+{
+   switch (type) {
+   case GL_UNSIGNED_BYTE_3_3_2:
+   case GL_UNSIGNED_BYTE_2_3_3_REV:
+   case MESA_UNSIGNED_BYTE_4_4:
+   case GL_UNSIGNED_SHORT_5_6_5:
+   case GL_UNSIGNED_SHORT_5_6_5_REV:
+   case GL_UNSIGNED_SHORT_4_4_4_4:
+   case GL_UNSIGNED_SHORT_4_4_4_4_REV:
+   case GL_UNSIGNED_SHORT_5_5_5_1:
+   case GL_UNSIGNED_SHORT_1_5_5_5_REV:
+   case GL_UNSIGNED_INT_8_8_8_8:
+   case GL_UNSIGNED_INT_8_8_8_8_REV:
+   case GL_UNSIGNED_INT_10_10_10_2:
+   case GL_UNSIGNED_INT_2_10_10_10_REV:
+   case GL_UNSIGNED_SHORT_8_8_MESA:
+   case GL_UNSIGNED_SHORT_8_8_REV_MESA:
+   case GL_UNSIGNED_INT_24_8_EXT:
+   case GL_UNSIGNED_INT_5_9_9_9_REV:
+   case GL_UNSIGNED_INT_10F_11F_11F_REV:
+   case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
+      return GL_TRUE;
+   }
+
+   return GL_FALSE;
+}
+
+
+
+/**
+ * Flip the order of the 2 bytes in each word in the given array.
+ *
+ * \param p array.
+ * \param n number of words.
+ */
+void
+_mesa_swap2( GLushort *p, GLuint n )
+{
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      p[i] = (p[i] >> 8) | ((p[i] << 8) & 0xff00);
+   }
+}
+
+
+
+/*
+ * Flip the order of the 4 bytes in each word in the given array.
+ */
+void
+_mesa_swap4( GLuint *p, GLuint n )
+{
+   GLuint i, a, b;
+   for (i = 0; i < n; i++) {
+      b = p[i];
+      a =  (b >> 24)
+	| ((b >> 8) & 0xff00)
+	| ((b << 8) & 0xff0000)
+	| ((b << 24) & 0xff000000);
+      p[i] = a;
+   }
+}
+
+
+/**
+ * Get the size of a GL data type.
+ *
+ * \param type GL data type.
+ *
+ * \return the size, in bytes, of the given data type, 0 if a GL_BITMAP, or -1
+ * if an invalid type enum.
+ */
+GLint
+_mesa_sizeof_type( GLenum type )
+{
+   switch (type) {
+      case GL_BITMAP:
+	 return 0;
+      case GL_UNSIGNED_BYTE:
+         return sizeof(GLubyte);
+      case GL_BYTE:
+	 return sizeof(GLbyte);
+      case GL_UNSIGNED_SHORT:
+	 return sizeof(GLushort);
+      case GL_SHORT:
+	 return sizeof(GLshort);
+      case GL_UNSIGNED_INT:
+	 return sizeof(GLuint);
+      case GL_INT:
+	 return sizeof(GLint);
+      case GL_FLOAT:
+	 return sizeof(GLfloat);
+      case GL_DOUBLE:
+	 return sizeof(GLdouble);
+      case GL_HALF_FLOAT_ARB:
+	 return sizeof(GLhalfARB);
+      case GL_FIXED:
+	 return sizeof(GLfixed);
+      default:
+         return -1;
+   }
+}
+
+
+/**
+ * Same as _mesa_sizeof_type() but also accepting the packed pixel
+ * format data types.
+ */
+GLint
+_mesa_sizeof_packed_type( GLenum type )
+{
+   switch (type) {
+      case GL_BITMAP:
+	 return 0;
+      case GL_UNSIGNED_BYTE:
+         return sizeof(GLubyte);
+      case GL_BYTE:
+	 return sizeof(GLbyte);
+      case GL_UNSIGNED_SHORT:
+	 return sizeof(GLushort);
+      case GL_SHORT:
+	 return sizeof(GLshort);
+      case GL_UNSIGNED_INT:
+	 return sizeof(GLuint);
+      case GL_INT:
+	 return sizeof(GLint);
+      case GL_HALF_FLOAT_ARB:
+	 return sizeof(GLhalfARB);
+      case GL_FLOAT:
+	 return sizeof(GLfloat);
+      case GL_UNSIGNED_BYTE_3_3_2:
+         return sizeof(GLubyte);
+      case GL_UNSIGNED_BYTE_2_3_3_REV:
+         return sizeof(GLubyte);
+      case MESA_UNSIGNED_BYTE_4_4:
+         return sizeof(GLubyte);
+      case GL_UNSIGNED_SHORT_5_6_5:
+         return sizeof(GLushort);
+      case GL_UNSIGNED_SHORT_5_6_5_REV:
+         return sizeof(GLushort);
+      case GL_UNSIGNED_SHORT_4_4_4_4:
+         return sizeof(GLushort);
+      case GL_UNSIGNED_SHORT_4_4_4_4_REV:
+         return sizeof(GLushort);
+      case GL_UNSIGNED_SHORT_5_5_5_1:
+         return sizeof(GLushort);
+      case GL_UNSIGNED_SHORT_1_5_5_5_REV:
+         return sizeof(GLushort);
+      case GL_UNSIGNED_INT_8_8_8_8:
+         return sizeof(GLuint);
+      case GL_UNSIGNED_INT_8_8_8_8_REV:
+         return sizeof(GLuint);
+      case GL_UNSIGNED_INT_10_10_10_2:
+         return sizeof(GLuint);
+      case GL_UNSIGNED_INT_2_10_10_10_REV:
+         return sizeof(GLuint);
+      case GL_UNSIGNED_SHORT_8_8_MESA:
+      case GL_UNSIGNED_SHORT_8_8_REV_MESA:
+         return sizeof(GLushort);      
+      case GL_UNSIGNED_INT_24_8_EXT:
+         return sizeof(GLuint);
+      case GL_UNSIGNED_INT_5_9_9_9_REV:
+         return sizeof(GLuint);
+      case GL_UNSIGNED_INT_10F_11F_11F_REV:
+         return sizeof(GLuint);
+      case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
+         return 8;
+      default:
+         return -1;
+   }
+}
+
+
+/**
+ * Get the number of components in a pixel format.
+ *
+ * \param format pixel format.
+ *
+ * \return the number of components in the given format, or -1 if a bad format.
+ */
+GLint
+_mesa_components_in_format( GLenum format )
+{
+   switch (format) {
+      case GL_COLOR_INDEX:
+      case GL_COLOR_INDEX1_EXT:
+      case GL_COLOR_INDEX2_EXT:
+      case GL_COLOR_INDEX4_EXT:
+      case GL_COLOR_INDEX8_EXT:
+      case GL_COLOR_INDEX12_EXT:
+      case GL_COLOR_INDEX16_EXT:
+      case GL_STENCIL_INDEX:
+      case GL_DEPTH_COMPONENT:
+      case GL_RED:
+      case GL_RED_INTEGER_EXT:
+      case GL_GREEN:
+      case GL_GREEN_INTEGER_EXT:
+      case GL_BLUE:
+      case GL_BLUE_INTEGER_EXT:
+      case GL_ALPHA:
+      case GL_ALPHA_INTEGER_EXT:
+      case GL_LUMINANCE:
+      case GL_LUMINANCE_INTEGER_EXT:
+      case GL_INTENSITY:
+         return 1;
+      case GL_LUMINANCE_ALPHA:
+      case GL_LUMINANCE_ALPHA_INTEGER_EXT:
+      case GL_RG:
+	 return 2;
+      case GL_RGB:
+      case GL_RGB_INTEGER_EXT:
+	 return 3;
+      case GL_RGBA:
+      case GL_RGBA_INTEGER_EXT:
+	 return 4;
+      case GL_BGR:
+	 return 3;
+      case GL_BGRA:
+	 return 4;
+      case GL_ABGR_EXT:
+         return 4;
+      case GL_YCBCR_MESA:
+         return 2;
+      case GL_DEPTH_STENCIL_EXT:
+         return 2;
+      case GL_DUDV_ATI:
+      case GL_DU8DV8_ATI:
+         return 2;
+      default:
+         return -1;
+   }
+}
+
+
+/**
+ * Get the bytes per pixel of pixel format type pair.
+ *
+ * \param format pixel format.
+ * \param type pixel type.
+ *
+ * \return bytes per pixel, or -1 if a bad format or type was given.
+ */
+GLint
+_mesa_bytes_per_pixel( GLenum format, GLenum type )
+{
+   GLint comps = _mesa_components_in_format( format );
+   if (comps < 0)
+      return -1;
+
+   switch (type) {
+      case GL_BITMAP:
+         return 0;  /* special case */
+      case GL_BYTE:
+      case GL_UNSIGNED_BYTE:
+         return comps * sizeof(GLubyte);
+      case GL_SHORT:
+      case GL_UNSIGNED_SHORT:
+         return comps * sizeof(GLshort);
+      case GL_INT:
+      case GL_UNSIGNED_INT:
+         return comps * sizeof(GLint);
+      case GL_FLOAT:
+         return comps * sizeof(GLfloat);
+      case GL_HALF_FLOAT_ARB:
+         return comps * sizeof(GLhalfARB);
+      case GL_UNSIGNED_BYTE_3_3_2:
+      case GL_UNSIGNED_BYTE_2_3_3_REV:
+         if (format == GL_RGB || format == GL_BGR ||
+             format == GL_RGB_INTEGER_EXT || format == GL_BGR_INTEGER_EXT)
+            return sizeof(GLubyte);
+         else
+            return -1;  /* error */
+      case GL_UNSIGNED_SHORT_5_6_5:
+      case GL_UNSIGNED_SHORT_5_6_5_REV:
+         if (format == GL_RGB || format == GL_BGR ||
+             format == GL_RGB_INTEGER_EXT || format == GL_BGR_INTEGER_EXT)
+            return sizeof(GLushort);
+         else
+            return -1;  /* error */
+      case GL_UNSIGNED_SHORT_4_4_4_4:
+      case GL_UNSIGNED_SHORT_4_4_4_4_REV:
+      case GL_UNSIGNED_SHORT_5_5_5_1:
+      case GL_UNSIGNED_SHORT_1_5_5_5_REV:
+         if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT ||
+             format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT)
+            return sizeof(GLushort);
+         else
+            return -1;
+      case GL_UNSIGNED_INT_8_8_8_8:
+      case GL_UNSIGNED_INT_8_8_8_8_REV:
+      case GL_UNSIGNED_INT_10_10_10_2:
+      case GL_UNSIGNED_INT_2_10_10_10_REV:
+         if (format == GL_RGBA || format == GL_BGRA || format == GL_ABGR_EXT ||
+             format == GL_RGBA_INTEGER_EXT || format == GL_BGRA_INTEGER_EXT)
+            return sizeof(GLuint);
+         else
+            return -1;
+      case GL_UNSIGNED_SHORT_8_8_MESA:
+      case GL_UNSIGNED_SHORT_8_8_REV_MESA:
+         if (format == GL_YCBCR_MESA)
+            return sizeof(GLushort);
+         else
+            return -1;
+      case GL_UNSIGNED_INT_24_8_EXT:
+         if (format == GL_DEPTH_STENCIL_EXT)
+            return sizeof(GLuint);
+         else
+            return -1;
+      case GL_UNSIGNED_INT_5_9_9_9_REV:
+         if (format == GL_RGB)
+            return sizeof(GLuint);
+         else
+            return -1;
+      case GL_UNSIGNED_INT_10F_11F_11F_REV:
+         if (format == GL_RGB)
+            return sizeof(GLuint);
+         else
+            return -1;
+      case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
+         if (format == GL_DEPTH_STENCIL)
+            return 8;
+         else
+            return -1;
+      default:
+         return -1;
+   }
+}
+
+
+/**
+ * Test for a legal pixel format and type.
+ *
+ * \param format pixel format.
+ * \param type pixel type.
+ *
+ * \return GL_TRUE if the given pixel format and type are legal, or GL_FALSE
+ * otherwise.
+ */
+GLboolean
+_mesa_is_legal_format_and_type(const struct gl_context *ctx,
+                               GLenum format, GLenum type)
+{
+   switch (format) {
+      case GL_COLOR_INDEX:
+      case GL_STENCIL_INDEX:
+         switch (type) {
+            case GL_BITMAP:
+            case GL_BYTE:
+            case GL_UNSIGNED_BYTE:
+            case GL_SHORT:
+            case GL_UNSIGNED_SHORT:
+            case GL_INT:
+            case GL_UNSIGNED_INT:
+            case GL_FLOAT:
+               return GL_TRUE;
+            case GL_HALF_FLOAT_ARB:
+               return ctx->Extensions.ARB_half_float_pixel;
+            default:
+               return GL_FALSE;
+         }
+      case GL_RED:
+      case GL_GREEN:
+      case GL_BLUE:
+      case GL_ALPHA:
+#if 0 /* not legal!  see table 3.6 of the 1.5 spec */
+      case GL_INTENSITY:
+#endif
+      case GL_LUMINANCE:
+      case GL_LUMINANCE_ALPHA:
+      case GL_DEPTH_COMPONENT:
+         switch (type) {
+            case GL_BYTE:
+            case GL_UNSIGNED_BYTE:
+            case GL_SHORT:
+            case GL_UNSIGNED_SHORT:
+            case GL_INT:
+            case GL_UNSIGNED_INT:
+            case GL_FLOAT:
+               return GL_TRUE;
+            case GL_HALF_FLOAT_ARB:
+               return ctx->Extensions.ARB_half_float_pixel;
+            default:
+               return GL_FALSE;
+         }
+      case GL_RG:
+	 if (!ctx->Extensions.ARB_texture_rg)
+	    return GL_FALSE;
+
+         switch (type) {
+            case GL_BYTE:
+            case GL_UNSIGNED_BYTE:
+            case GL_SHORT:
+            case GL_UNSIGNED_SHORT:
+            case GL_INT:
+            case GL_UNSIGNED_INT:
+            case GL_FLOAT:
+               return GL_TRUE;
+            case GL_HALF_FLOAT_ARB:
+               return ctx->Extensions.ARB_half_float_pixel;
+            default:
+               return GL_FALSE;
+         }
+      case GL_RGB:
+         switch (type) {
+            case GL_BYTE:
+            case GL_UNSIGNED_BYTE:
+            case GL_SHORT:
+            case GL_UNSIGNED_SHORT:
+            case GL_INT:
+            case GL_UNSIGNED_INT:
+            case GL_FLOAT:
+            case GL_UNSIGNED_BYTE_3_3_2:
+            case GL_UNSIGNED_BYTE_2_3_3_REV:
+            case GL_UNSIGNED_SHORT_5_6_5:
+            case GL_UNSIGNED_SHORT_5_6_5_REV:
+               return GL_TRUE;
+            case GL_HALF_FLOAT_ARB:
+               return ctx->Extensions.ARB_half_float_pixel;
+            case GL_UNSIGNED_INT_5_9_9_9_REV:
+               return ctx->Extensions.EXT_texture_shared_exponent;
+            case GL_UNSIGNED_INT_10F_11F_11F_REV:
+               return ctx->Extensions.EXT_packed_float;
+            default:
+               return GL_FALSE;
+         }
+      case GL_BGR:
+         switch (type) {
+            /* NOTE: no packed types are supported with BGR.  That's
+             * intentional, according to the GL spec.
+             */
+            case GL_BYTE:
+            case GL_UNSIGNED_BYTE:
+            case GL_SHORT:
+            case GL_UNSIGNED_SHORT:
+            case GL_INT:
+            case GL_UNSIGNED_INT:
+            case GL_FLOAT:
+               return GL_TRUE;
+            case GL_HALF_FLOAT_ARB:
+               return ctx->Extensions.ARB_half_float_pixel;
+            default:
+               return GL_FALSE;
+         }
+      case GL_RGBA:
+      case GL_BGRA:
+      case GL_ABGR_EXT:
+         switch (type) {
+            case GL_BYTE:
+            case GL_UNSIGNED_BYTE:
+            case GL_SHORT:
+            case GL_UNSIGNED_SHORT:
+            case GL_INT:
+            case GL_UNSIGNED_INT:
+            case GL_FLOAT:
+            case GL_UNSIGNED_SHORT_4_4_4_4:
+            case GL_UNSIGNED_SHORT_4_4_4_4_REV:
+            case GL_UNSIGNED_SHORT_5_5_5_1:
+            case GL_UNSIGNED_SHORT_1_5_5_5_REV:
+            case GL_UNSIGNED_INT_8_8_8_8:
+            case GL_UNSIGNED_INT_8_8_8_8_REV:
+            case GL_UNSIGNED_INT_10_10_10_2:
+            case GL_UNSIGNED_INT_2_10_10_10_REV:
+               return GL_TRUE;
+            case GL_HALF_FLOAT_ARB:
+               return ctx->Extensions.ARB_half_float_pixel;
+            default:
+               return GL_FALSE;
+         }
+      case GL_YCBCR_MESA:
+         if (type == GL_UNSIGNED_SHORT_8_8_MESA ||
+             type == GL_UNSIGNED_SHORT_8_8_REV_MESA)
+            return GL_TRUE;
+         else
+            return GL_FALSE;
+      case GL_DEPTH_STENCIL_EXT:
+         if ((ctx->Extensions.EXT_packed_depth_stencil &&
+              type == GL_UNSIGNED_INT_24_8_EXT) ||
+             (ctx->Extensions.ARB_depth_buffer_float &&
+              type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV))
+            return GL_TRUE;
+         else
+            return GL_FALSE;
+      case GL_DUDV_ATI:
+      case GL_DU8DV8_ATI:
+         switch (type) {
+            case GL_BYTE:
+            case GL_UNSIGNED_BYTE:
+            case GL_SHORT:
+            case GL_UNSIGNED_SHORT:
+            case GL_INT:
+            case GL_UNSIGNED_INT:
+            case GL_FLOAT:
+               return GL_TRUE;
+            default:
+               return GL_FALSE;
+         }
+
+      /* integer-valued formats */
+      case GL_RED_INTEGER_EXT:
+      case GL_GREEN_INTEGER_EXT:
+      case GL_BLUE_INTEGER_EXT:
+      case GL_ALPHA_INTEGER_EXT:
+         switch (type) {
+            case GL_BYTE:
+            case GL_UNSIGNED_BYTE:
+            case GL_SHORT:
+            case GL_UNSIGNED_SHORT:
+            case GL_INT:
+            case GL_UNSIGNED_INT:
+               return ctx->Extensions.EXT_texture_integer;
+            default:
+               return GL_FALSE;
+         }
+
+      case GL_RGB_INTEGER_EXT:
+         switch (type) {
+            case GL_BYTE:
+            case GL_UNSIGNED_BYTE:
+            case GL_SHORT:
+            case GL_UNSIGNED_SHORT:
+            case GL_INT:
+            case GL_UNSIGNED_INT:
+            case GL_UNSIGNED_BYTE_3_3_2:
+            case GL_UNSIGNED_BYTE_2_3_3_REV:
+            case GL_UNSIGNED_SHORT_5_6_5:
+            case GL_UNSIGNED_SHORT_5_6_5_REV:
+               return ctx->Extensions.EXT_texture_integer;
+            default:
+               return GL_FALSE;
+         }
+
+      case GL_BGR_INTEGER_EXT:
+         switch (type) {
+            case GL_BYTE:
+            case GL_UNSIGNED_BYTE:
+            case GL_SHORT:
+            case GL_UNSIGNED_SHORT:
+            case GL_INT:
+            case GL_UNSIGNED_INT:
+            /* NOTE: no packed formats w/ BGR format */
+               return ctx->Extensions.EXT_texture_integer;
+            default:
+               return GL_FALSE;
+         }
+
+      case GL_RGBA_INTEGER_EXT:
+      case GL_BGRA_INTEGER_EXT:
+         switch (type) {
+            case GL_BYTE:
+            case GL_UNSIGNED_BYTE:
+            case GL_SHORT:
+            case GL_UNSIGNED_SHORT:
+            case GL_INT:
+            case GL_UNSIGNED_INT:
+            case GL_UNSIGNED_SHORT_4_4_4_4:
+            case GL_UNSIGNED_SHORT_4_4_4_4_REV:
+            case GL_UNSIGNED_SHORT_5_5_5_1:
+            case GL_UNSIGNED_SHORT_1_5_5_5_REV:
+            case GL_UNSIGNED_INT_8_8_8_8:
+            case GL_UNSIGNED_INT_8_8_8_8_REV:
+            case GL_UNSIGNED_INT_10_10_10_2:
+            case GL_UNSIGNED_INT_2_10_10_10_REV:
+               return ctx->Extensions.EXT_texture_integer;
+            default:
+               return GL_FALSE;
+         }
+
+      case GL_LUMINANCE_INTEGER_EXT:
+      case GL_LUMINANCE_ALPHA_INTEGER_EXT:
+         switch (type) {
+            case GL_BYTE:
+            case GL_UNSIGNED_BYTE:
+            case GL_SHORT:
+            case GL_UNSIGNED_SHORT:
+            case GL_INT:
+            case GL_UNSIGNED_INT:
+               return ctx->Extensions.EXT_texture_integer;
+            default:
+               return GL_FALSE;
+         }
+
+      default:
+         ; /* fall-through */
+   }
+   return GL_FALSE;
+}
+
+
+/**
+ * Test if the given image format is a color/RGBA format (i.e., not color
+ * index, depth, stencil, etc).
+ * \param format  the image format value (may by an internal texture format)
+ * \return GL_TRUE if its a color/RGBA format, GL_FALSE otherwise.
+ */
+GLboolean
+_mesa_is_color_format(GLenum format)
+{
+   switch (format) {
+      case GL_RED:
+      case GL_GREEN:
+      case GL_BLUE:
+      case GL_ALPHA:
+      case GL_ALPHA4:
+      case GL_ALPHA8:
+      case GL_ALPHA12:
+      case GL_ALPHA16:
+      case 1:
+      case GL_LUMINANCE:
+      case GL_LUMINANCE4:
+      case GL_LUMINANCE8:
+      case GL_LUMINANCE12:
+      case GL_LUMINANCE16:
+      case 2:
+      case GL_LUMINANCE_ALPHA:
+      case GL_LUMINANCE4_ALPHA4:
+      case GL_LUMINANCE6_ALPHA2:
+      case GL_LUMINANCE8_ALPHA8:
+      case GL_LUMINANCE12_ALPHA4:
+      case GL_LUMINANCE12_ALPHA12:
+      case GL_LUMINANCE16_ALPHA16:
+      case GL_INTENSITY:
+      case GL_INTENSITY4:
+      case GL_INTENSITY8:
+      case GL_INTENSITY12:
+      case GL_INTENSITY16:
+      case GL_R8:
+      case GL_R16:
+      case GL_RG:
+      case GL_RG8:
+      case GL_RG16:
+      case 3:
+      case GL_RGB:
+      case GL_BGR:
+      case GL_R3_G3_B2:
+      case GL_RGB4:
+      case GL_RGB5:
+      case GL_RGB8:
+      case GL_RGB10:
+      case GL_RGB12:
+      case GL_RGB16:
+      case 4:
+      case GL_ABGR_EXT:
+      case GL_RGBA:
+      case GL_BGRA:
+      case GL_RGBA2:
+      case GL_RGBA4:
+      case GL_RGB5_A1:
+      case GL_RGBA8:
+      case GL_RGB10_A2:
+      case GL_RGBA12:
+      case GL_RGBA16:
+      /* float texture formats */
+      case GL_ALPHA16F_ARB:
+      case GL_ALPHA32F_ARB:
+      case GL_LUMINANCE16F_ARB:
+      case GL_LUMINANCE32F_ARB:
+      case GL_LUMINANCE_ALPHA16F_ARB:
+      case GL_LUMINANCE_ALPHA32F_ARB:
+      case GL_INTENSITY16F_ARB:
+      case GL_INTENSITY32F_ARB:
+      case GL_R16F:
+      case GL_R32F:
+      case GL_RG16F:
+      case GL_RG32F:
+      case GL_RGB16F_ARB:
+      case GL_RGB32F_ARB:
+      case GL_RGBA16F_ARB:
+      case GL_RGBA32F_ARB:
+      /* compressed formats */
+      case GL_COMPRESSED_ALPHA:
+      case GL_COMPRESSED_LUMINANCE:
+      case GL_COMPRESSED_LUMINANCE_ALPHA:
+      case GL_COMPRESSED_INTENSITY:
+      case GL_COMPRESSED_RED:
+      case GL_COMPRESSED_RG:
+      case GL_COMPRESSED_RGB:
+      case GL_COMPRESSED_RGBA:
+      case GL_RGB_S3TC:
+      case GL_RGB4_S3TC:
+      case GL_RGBA_S3TC:
+      case GL_RGBA4_S3TC:
+      case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
+      case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
+      case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
+      case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
+      case GL_COMPRESSED_RGB_FXT1_3DFX:
+      case GL_COMPRESSED_RGBA_FXT1_3DFX:
+#if FEATURE_EXT_texture_sRGB
+      case GL_SRGB_EXT:
+      case GL_SRGB8_EXT:
+      case GL_SRGB_ALPHA_EXT:
+      case GL_SRGB8_ALPHA8_EXT:
+      case GL_SLUMINANCE_ALPHA_EXT:
+      case GL_SLUMINANCE8_ALPHA8_EXT:
+      case GL_SLUMINANCE_EXT:
+      case GL_SLUMINANCE8_EXT:
+      case GL_COMPRESSED_SRGB_EXT:
+      case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
+      case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
+      case GL_COMPRESSED_SLUMINANCE_EXT:
+      case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
+#endif /* FEATURE_EXT_texture_sRGB */
+      case GL_COMPRESSED_RED_RGTC1:
+      case GL_COMPRESSED_SIGNED_RED_RGTC1:
+      case GL_COMPRESSED_RG_RGTC2:
+      case GL_COMPRESSED_SIGNED_RG_RGTC2:
+      case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
+      case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
+      case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
+      case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
+      case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
+      /* generic integer formats */
+      case GL_RED_INTEGER_EXT:
+      case GL_GREEN_INTEGER_EXT:
+      case GL_BLUE_INTEGER_EXT:
+      case GL_ALPHA_INTEGER_EXT:
+      case GL_RGB_INTEGER_EXT:
+      case GL_RGBA_INTEGER_EXT:
+      case GL_BGR_INTEGER_EXT:
+      case GL_BGRA_INTEGER_EXT:
+      case GL_LUMINANCE_INTEGER_EXT:
+      case GL_LUMINANCE_ALPHA_INTEGER_EXT:
+      /* sized integer formats */
+      case GL_RGBA32UI_EXT:
+      case GL_RGB32UI_EXT:
+      case GL_ALPHA32UI_EXT:
+      case GL_INTENSITY32UI_EXT:
+      case GL_LUMINANCE32UI_EXT:
+      case GL_LUMINANCE_ALPHA32UI_EXT:
+      case GL_RGBA16UI_EXT:
+      case GL_RGB16UI_EXT:
+      case GL_ALPHA16UI_EXT:
+      case GL_INTENSITY16UI_EXT:
+      case GL_LUMINANCE16UI_EXT:
+      case GL_LUMINANCE_ALPHA16UI_EXT:
+      case GL_RGBA8UI_EXT:
+      case GL_RGB8UI_EXT:
+      case GL_ALPHA8UI_EXT:
+      case GL_INTENSITY8UI_EXT:
+      case GL_LUMINANCE8UI_EXT:
+      case GL_LUMINANCE_ALPHA8UI_EXT:
+      case GL_RGBA32I_EXT:
+      case GL_RGB32I_EXT:
+      case GL_ALPHA32I_EXT:
+      case GL_INTENSITY32I_EXT:
+      case GL_LUMINANCE32I_EXT:
+      case GL_LUMINANCE_ALPHA32I_EXT:
+      case GL_RGBA16I_EXT:
+      case GL_RGB16I_EXT:
+      case GL_ALPHA16I_EXT:
+      case GL_INTENSITY16I_EXT:
+      case GL_LUMINANCE16I_EXT:
+      case GL_LUMINANCE_ALPHA16I_EXT:
+      case GL_RGBA8I_EXT:
+      case GL_RGB8I_EXT:
+      case GL_ALPHA8I_EXT:
+      case GL_INTENSITY8I_EXT:
+      case GL_LUMINANCE8I_EXT:
+      case GL_LUMINANCE_ALPHA8I_EXT:
+      /* signed, normalized texture formats */
+      case GL_RED_SNORM:
+      case GL_R8_SNORM:
+      case GL_R16_SNORM:
+      case GL_RG_SNORM:
+      case GL_RG8_SNORM:
+      case GL_RG16_SNORM:
+      case GL_RGB_SNORM:
+      case GL_RGB8_SNORM:
+      case GL_RGB16_SNORM:
+      case GL_RGBA_SNORM:
+      case GL_RGBA8_SNORM:
+      case GL_RGBA16_SNORM:
+      case GL_ALPHA_SNORM:
+      case GL_ALPHA8_SNORM:
+      case GL_ALPHA16_SNORM:
+      case GL_LUMINANCE_SNORM:
+      case GL_LUMINANCE8_SNORM:
+      case GL_LUMINANCE16_SNORM:
+      case GL_LUMINANCE_ALPHA_SNORM:
+      case GL_LUMINANCE8_ALPHA8_SNORM:
+      case GL_LUMINANCE16_ALPHA16_SNORM:
+      case GL_INTENSITY_SNORM:
+      case GL_INTENSITY8_SNORM:
+      case GL_INTENSITY16_SNORM:
+      case GL_RGB9_E5:
+      case GL_R11F_G11F_B10F:
+         return GL_TRUE;
+      case GL_YCBCR_MESA:  /* not considered to be RGB */
+         /* fall-through */
+      default:
+         return GL_FALSE;
+   }
+}
+
+
+/**
+ * Test if the given image format is a color index format.
+ */
+GLboolean
+_mesa_is_index_format(GLenum format)
+{
+   switch (format) {
+      case GL_COLOR_INDEX:
+      case GL_COLOR_INDEX1_EXT:
+      case GL_COLOR_INDEX2_EXT:
+      case GL_COLOR_INDEX4_EXT:
+      case GL_COLOR_INDEX8_EXT:
+      case GL_COLOR_INDEX12_EXT:
+      case GL_COLOR_INDEX16_EXT:
+         return GL_TRUE;
+      default:
+         return GL_FALSE;
+   }
+}
+
+
+/**
+ * Test if the given image format is a depth component format.
+ */
+GLboolean
+_mesa_is_depth_format(GLenum format)
+{
+   switch (format) {
+      case GL_DEPTH_COMPONENT:
+      case GL_DEPTH_COMPONENT16:
+      case GL_DEPTH_COMPONENT24:
+      case GL_DEPTH_COMPONENT32:
+      case GL_DEPTH_COMPONENT32F:
+         return GL_TRUE;
+      default:
+         return GL_FALSE;
+   }
+}
+
+
+/**
+ * Test if the given image format is a stencil format.
+ */
+GLboolean
+_mesa_is_stencil_format(GLenum format)
+{
+   switch (format) {
+      case GL_STENCIL_INDEX:
+      case GL_DEPTH_STENCIL:
+         return GL_TRUE;
+      default:
+         return GL_FALSE;
+   }
+}
+
+
+/**
+ * Test if the given image format is a YCbCr format.
+ */
+GLboolean
+_mesa_is_ycbcr_format(GLenum format)
+{
+   switch (format) {
+      case GL_YCBCR_MESA:
+         return GL_TRUE;
+      default:
+         return GL_FALSE;
+   }
+}
+
+
+/**
+ * Test if the given image format is a depth+stencil format.
+ */
+GLboolean
+_mesa_is_depthstencil_format(GLenum format)
+{
+   switch (format) {
+      case GL_DEPTH24_STENCIL8_EXT:
+      case GL_DEPTH_STENCIL_EXT:
+      case GL_DEPTH32F_STENCIL8:
+         return GL_TRUE;
+      default:
+         return GL_FALSE;
+   }
+}
+
+
+/**
+ * Test if the given image format is a depth or stencil format.
+ */
+GLboolean
+_mesa_is_depth_or_stencil_format(GLenum format)
+{
+   switch (format) {
+      case GL_DEPTH_COMPONENT:
+      case GL_DEPTH_COMPONENT16:
+      case GL_DEPTH_COMPONENT24:
+      case GL_DEPTH_COMPONENT32:
+      case GL_STENCIL_INDEX:
+      case GL_STENCIL_INDEX1_EXT:
+      case GL_STENCIL_INDEX4_EXT:
+      case GL_STENCIL_INDEX8_EXT:
+      case GL_STENCIL_INDEX16_EXT:
+      case GL_DEPTH_STENCIL_EXT:
+      case GL_DEPTH24_STENCIL8_EXT:
+      case GL_DEPTH_COMPONENT32F:
+      case GL_DEPTH32F_STENCIL8:
+         return GL_TRUE;
+      default:
+         return GL_FALSE;
+   }
+}
+
+
+/**
+ * Test if the given image format is a dudv format.
+ */
+GLboolean
+_mesa_is_dudv_format(GLenum format)
+{
+   switch (format) {
+      case GL_DUDV_ATI:
+      case GL_DU8DV8_ATI:
+         return GL_TRUE;
+      default:
+         return GL_FALSE;
+   }
+}
+
+
+/**
+ * Test if the given format is an integer (non-normalized) format.
+ */
+GLboolean
+_mesa_is_integer_format(GLenum format)
+{
+   switch (format) {
+   /* generic integer formats */
+   case GL_RED_INTEGER_EXT:
+   case GL_GREEN_INTEGER_EXT:
+   case GL_BLUE_INTEGER_EXT:
+   case GL_ALPHA_INTEGER_EXT:
+   case GL_RGB_INTEGER_EXT:
+   case GL_RGBA_INTEGER_EXT:
+   case GL_BGR_INTEGER_EXT:
+   case GL_BGRA_INTEGER_EXT:
+   case GL_LUMINANCE_INTEGER_EXT:
+   case GL_LUMINANCE_ALPHA_INTEGER_EXT:
+   /* specific integer formats */
+   case GL_RGBA32UI_EXT:
+   case GL_RGB32UI_EXT:
+   case GL_ALPHA32UI_EXT:
+   case GL_INTENSITY32UI_EXT:
+   case GL_LUMINANCE32UI_EXT:
+   case GL_LUMINANCE_ALPHA32UI_EXT:
+   case GL_RGBA16UI_EXT:
+   case GL_RGB16UI_EXT:
+   case GL_ALPHA16UI_EXT:
+   case GL_INTENSITY16UI_EXT:
+   case GL_LUMINANCE16UI_EXT:
+   case GL_LUMINANCE_ALPHA16UI_EXT:
+   case GL_RGBA8UI_EXT:
+   case GL_RGB8UI_EXT:
+   case GL_ALPHA8UI_EXT:
+   case GL_INTENSITY8UI_EXT:
+   case GL_LUMINANCE8UI_EXT:
+   case GL_LUMINANCE_ALPHA8UI_EXT:
+   case GL_RGBA32I_EXT:
+   case GL_RGB32I_EXT:
+   case GL_ALPHA32I_EXT:
+   case GL_INTENSITY32I_EXT:
+   case GL_LUMINANCE32I_EXT:
+   case GL_LUMINANCE_ALPHA32I_EXT:
+   case GL_RGBA16I_EXT:
+   case GL_RGB16I_EXT:
+   case GL_ALPHA16I_EXT:
+   case GL_INTENSITY16I_EXT:
+   case GL_LUMINANCE16I_EXT:
+   case GL_LUMINANCE_ALPHA16I_EXT:
+   case GL_RGBA8I_EXT:
+   case GL_RGB8I_EXT:
+   case GL_ALPHA8I_EXT:
+   case GL_INTENSITY8I_EXT:
+   case GL_LUMINANCE8I_EXT:
+   case GL_LUMINANCE_ALPHA8I_EXT:
+      return GL_TRUE;
+   default:
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Test if an image format is a supported compressed format.
+ * \param format the internal format token provided by the user.
+ * \return GL_TRUE if compressed, GL_FALSE if uncompressed
+ */
+GLboolean
+_mesa_is_compressed_format(struct gl_context *ctx, GLenum format)
+{
+   switch (format) {
+   case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
+   case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
+   case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
+   case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
+      return ctx->Extensions.EXT_texture_compression_s3tc;
+   case GL_RGB_S3TC:
+   case GL_RGB4_S3TC:
+   case GL_RGBA_S3TC:
+   case GL_RGBA4_S3TC:
+      return ctx->Extensions.S3_s3tc;
+   case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
+   case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
+   case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
+   case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
+      return ctx->Extensions.EXT_texture_sRGB
+         && ctx->Extensions.EXT_texture_compression_s3tc;
+   case GL_COMPRESSED_RGB_FXT1_3DFX:
+   case GL_COMPRESSED_RGBA_FXT1_3DFX:
+      return ctx->Extensions.TDFX_texture_compression_FXT1;
+   case GL_COMPRESSED_RED_RGTC1:
+   case GL_COMPRESSED_SIGNED_RED_RGTC1:
+   case GL_COMPRESSED_RG_RGTC2:
+   case GL_COMPRESSED_SIGNED_RG_RGTC2:
+      return ctx->Extensions.ARB_texture_compression_rgtc;
+   case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
+   case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
+   case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
+   case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
+      return ctx->Extensions.EXT_texture_compression_latc;
+   case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
+      return ctx->Extensions.ATI_texture_compression_3dc;
+   default:
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Return the address of a specific pixel in an image (1D, 2D or 3D).
+ *
+ * Pixel unpacking/packing parameters are observed according to \p packing.
+ *
+ * \param dimensions either 1, 2 or 3 to indicate dimensionality of image
+ * \param image  starting address of image data
+ * \param width  the image width
+ * \param height  theimage height
+ * \param format  the pixel format
+ * \param type  the pixel data type
+ * \param packing  the pixelstore attributes
+ * \param img  which image in the volume (0 for 1D or 2D images)
+ * \param row  row of pixel in the image (0 for 1D images)
+ * \param column column of pixel in the image
+ * 
+ * \return address of pixel on success, or NULL on error.
+ *
+ * \sa gl_pixelstore_attrib.
+ */
+GLvoid *
+_mesa_image_address( GLuint dimensions,
+                     const struct gl_pixelstore_attrib *packing,
+                     const GLvoid *image,
+                     GLsizei width, GLsizei height,
+                     GLenum format, GLenum type,
+                     GLint img, GLint row, GLint column )
+{
+   GLint alignment;        /* 1, 2 or 4 */
+   GLint pixels_per_row;
+   GLint rows_per_image;
+   GLint skiprows;
+   GLint skippixels;
+   GLint skipimages;       /* for 3-D volume images */
+   GLubyte *pixel_addr;
+
+   ASSERT(dimensions >= 1 && dimensions <= 3);
+
+   alignment = packing->Alignment;
+   if (packing->RowLength > 0) {
+      pixels_per_row = packing->RowLength;
+   }
+   else {
+      pixels_per_row = width;
+   }
+   if (packing->ImageHeight > 0) {
+      rows_per_image = packing->ImageHeight;
+   }
+   else {
+      rows_per_image = height;
+   }
+
+   skippixels = packing->SkipPixels;
+   /* Note: SKIP_ROWS _is_ used for 1D images */
+   skiprows = packing->SkipRows;
+   /* Note: SKIP_IMAGES is only used for 3D images */
+   skipimages = (dimensions == 3) ? packing->SkipImages : 0;
+
+   if (type == GL_BITMAP) {
+      /* BITMAP data */
+      GLint comp_per_pixel;   /* components per pixel */
+      GLint bytes_per_comp;   /* bytes per component */
+      GLint bytes_per_row;
+      GLint bytes_per_image;
+
+      /* Compute bytes per component */
+      bytes_per_comp = _mesa_sizeof_packed_type( type );
+      if (bytes_per_comp < 0) {
+         return NULL;
+      }
+
+      /* Compute number of components per pixel */
+      comp_per_pixel = _mesa_components_in_format( format );
+      if (comp_per_pixel < 0) {
+         return NULL;
+      }
+
+      bytes_per_row = alignment
+                    * CEILING( comp_per_pixel*pixels_per_row, 8*alignment );
+
+      bytes_per_image = bytes_per_row * rows_per_image;
+
+      pixel_addr = (GLubyte *) image
+                 + (skipimages + img) * bytes_per_image
+                 + (skiprows + row) * bytes_per_row
+                 + (skippixels + column) / 8;
+   }
+   else {
+      /* Non-BITMAP data */
+      GLint bytes_per_pixel, bytes_per_row, remainder, bytes_per_image;
+      GLint topOfImage;
+
+      bytes_per_pixel = _mesa_bytes_per_pixel( format, type );
+
+      /* The pixel type and format should have been error checked earlier */
+      assert(bytes_per_pixel > 0);
+
+      bytes_per_row = pixels_per_row * bytes_per_pixel;
+      remainder = bytes_per_row % alignment;
+      if (remainder > 0)
+         bytes_per_row += (alignment - remainder);
+
+      ASSERT(bytes_per_row % alignment == 0);
+
+      bytes_per_image = bytes_per_row * rows_per_image;
+
+      if (packing->Invert) {
+         /* set pixel_addr to the last row */
+         topOfImage = bytes_per_row * (height - 1);
+         bytes_per_row = -bytes_per_row;
+      }
+      else {
+         topOfImage = 0;
+      }
+
+      /* compute final pixel address */
+      pixel_addr = (GLubyte *) image
+                 + (skipimages + img) * bytes_per_image
+                 + topOfImage
+                 + (skiprows + row) * bytes_per_row
+                 + (skippixels + column) * bytes_per_pixel;
+   }
+
+   return (GLvoid *) pixel_addr;
+}
+
+
+GLvoid *
+_mesa_image_address1d( const struct gl_pixelstore_attrib *packing,
+                       const GLvoid *image,
+                       GLsizei width,
+                       GLenum format, GLenum type,
+                       GLint column )
+{
+   return _mesa_image_address(1, packing, image, width, 1,
+                              format, type, 0, 0, column);
+}
+
+
+GLvoid *
+_mesa_image_address2d( const struct gl_pixelstore_attrib *packing,
+                       const GLvoid *image,
+                       GLsizei width, GLsizei height,
+                       GLenum format, GLenum type,
+                       GLint row, GLint column )
+{
+   return _mesa_image_address(2, packing, image, width, height,
+                              format, type, 0, row, column);
+}
+
+
+GLvoid *
+_mesa_image_address3d( const struct gl_pixelstore_attrib *packing,
+                       const GLvoid *image,
+                       GLsizei width, GLsizei height,
+                       GLenum format, GLenum type,
+                       GLint img, GLint row, GLint column )
+{
+   return _mesa_image_address(3, packing, image, width, height,
+                              format, type, img, row, column);
+}
+
+
+
+/**
+ * Compute the stride (in bytes) between image rows.
+ *
+ * \param packing the pixelstore attributes
+ * \param width image width.
+ * \param format pixel format.
+ * \param type pixel data type.
+ * 
+ * \return the stride in bytes for the given parameters, or -1 if error
+ */
+GLint
+_mesa_image_row_stride( const struct gl_pixelstore_attrib *packing,
+                        GLint width, GLenum format, GLenum type )
+{
+   GLint bytesPerRow, remainder;
+
+   ASSERT(packing);
+
+   if (type == GL_BITMAP) {
+      if (packing->RowLength == 0) {
+         bytesPerRow = (width + 7) / 8;
+      }
+      else {
+         bytesPerRow = (packing->RowLength + 7) / 8;
+      }
+   }
+   else {
+      /* Non-BITMAP data */
+      const GLint bytesPerPixel = _mesa_bytes_per_pixel(format, type);
+      if (bytesPerPixel <= 0)
+         return -1;  /* error */
+      if (packing->RowLength == 0) {
+         bytesPerRow = bytesPerPixel * width;
+      }
+      else {
+         bytesPerRow = bytesPerPixel * packing->RowLength;
+      }
+   }
+
+   remainder = bytesPerRow % packing->Alignment;
+   if (remainder > 0) {
+      bytesPerRow += (packing->Alignment - remainder);
+   }
+
+   if (packing->Invert) {
+      /* negate the bytes per row (negative row stride) */
+      bytesPerRow = -bytesPerRow;
+   }
+
+   return bytesPerRow;
+}
+
+
+/*
+ * Compute the stride between images in a 3D texture (in bytes) for the given
+ * pixel packing parameters and image width, format and type.
+ */
+GLint
+_mesa_image_image_stride( const struct gl_pixelstore_attrib *packing,
+                          GLint width, GLint height,
+                          GLenum format, GLenum type )
+{
+   GLint bytesPerRow, bytesPerImage, remainder;
+
+   ASSERT(packing);
+
+   if (type == GL_BITMAP) {
+      if (packing->RowLength == 0) {
+         bytesPerRow = (width + 7) / 8;
+      }
+      else {
+         bytesPerRow = (packing->RowLength + 7) / 8;
+      }
+   }
+   else {
+      const GLint bytesPerPixel = _mesa_bytes_per_pixel(format, type);
+
+      if (bytesPerPixel <= 0)
+         return -1;  /* error */
+      if (packing->RowLength == 0) {
+         bytesPerRow = bytesPerPixel * width;
+      }
+      else {
+         bytesPerRow = bytesPerPixel * packing->RowLength;
+      }
+   }
+
+   remainder = bytesPerRow % packing->Alignment;
+   if (remainder > 0)
+      bytesPerRow += (packing->Alignment - remainder);
+
+   if (packing->ImageHeight == 0)
+      bytesPerImage = bytesPerRow * height;
+   else
+      bytesPerImage = bytesPerRow * packing->ImageHeight;
+
+   return bytesPerImage;
+}
+
+
+
+/**
+ * "Expand" a bitmap from 1-bit per pixel to 8-bits per pixel.
+ * This is typically used to convert a bitmap into a GLubyte/pixel texture.
+ * "On" bits will set texels to \p onValue.
+ * "Off" bits will not modify texels.
+ * \param width  src bitmap width in pixels
+ * \param height  src bitmap height in pixels
+ * \param unpack  bitmap unpacking state
+ * \param bitmap  the src bitmap data
+ * \param destBuffer  start of dest buffer
+ * \param destStride  row stride in dest buffer
+ * \param onValue  if bit is 1, set destBuffer pixel to this value
+ */
+void
+_mesa_expand_bitmap(GLsizei width, GLsizei height,
+                    const struct gl_pixelstore_attrib *unpack,
+                    const GLubyte *bitmap,
+                    GLubyte *destBuffer, GLint destStride,
+                    GLubyte onValue)
+{
+   const GLubyte *srcRow = (const GLubyte *)
+      _mesa_image_address2d(unpack, bitmap, width, height,
+                            GL_COLOR_INDEX, GL_BITMAP, 0, 0);
+   const GLint srcStride = _mesa_image_row_stride(unpack, width,
+                                                  GL_COLOR_INDEX, GL_BITMAP);
+   GLint row, col;
+
+#define SET_PIXEL(COL, ROW) \
+   destBuffer[(ROW) * destStride + (COL)] = onValue;
+
+   for (row = 0; row < height; row++) {
+      const GLubyte *src = srcRow;
+
+      if (unpack->LsbFirst) {
+         /* Lsb first */
+         GLubyte mask = 1U << (unpack->SkipPixels & 0x7);
+         for (col = 0; col < width; col++) {
+
+            if (*src & mask) {
+               SET_PIXEL(col, row);
+            }
+
+            if (mask == 128U) {
+               src++;
+               mask = 1U;
+            }
+            else {
+               mask = mask << 1;
+            }
+         }
+
+         /* get ready for next row */
+         if (mask != 1)
+            src++;
+      }
+      else {
+         /* Msb first */
+         GLubyte mask = 128U >> (unpack->SkipPixels & 0x7);
+         for (col = 0; col < width; col++) {
+
+            if (*src & mask) {
+               SET_PIXEL(col, row);
+            }
+
+            if (mask == 1U) {
+               src++;
+               mask = 128U;
+            }
+            else {
+               mask = mask >> 1;
+            }
+         }
+
+         /* get ready for next row */
+         if (mask != 128)
+            src++;
+      }
+
+      srcRow += srcStride;
+   } /* row */
+
+#undef SET_PIXEL
+}
+
+
+
+
+/**
+ * Convert an array of RGBA colors from one datatype to another.
+ * NOTE: src may equal dst.  In that case, we use a temporary buffer.
+ */
+void
+_mesa_convert_colors(GLenum srcType, const GLvoid *src,
+                     GLenum dstType, GLvoid *dst,
+                     GLuint count, const GLubyte mask[])
+{
+   GLuint tempBuffer[MAX_WIDTH][4];
+   const GLboolean useTemp = (src == dst);
+
+   ASSERT(srcType != dstType);
+
+   switch (srcType) {
+   case GL_UNSIGNED_BYTE:
+      if (dstType == GL_UNSIGNED_SHORT) {
+         const GLubyte (*src1)[4] = (const GLubyte (*)[4]) src;
+         GLushort (*dst2)[4] = (GLushort (*)[4]) (useTemp ? tempBuffer : dst);
+         GLuint i;
+         for (i = 0; i < count; i++) {
+            if (!mask || mask[i]) {
+               dst2[i][RCOMP] = UBYTE_TO_USHORT(src1[i][RCOMP]);
+               dst2[i][GCOMP] = UBYTE_TO_USHORT(src1[i][GCOMP]);
+               dst2[i][BCOMP] = UBYTE_TO_USHORT(src1[i][BCOMP]);
+               dst2[i][ACOMP] = UBYTE_TO_USHORT(src1[i][ACOMP]);
+            }
+         }
+         if (useTemp)
+            memcpy(dst, tempBuffer, count * 4 * sizeof(GLushort));
+      }
+      else {
+         const GLubyte (*src1)[4] = (const GLubyte (*)[4]) src;
+         GLfloat (*dst4)[4] = (GLfloat (*)[4]) (useTemp ? tempBuffer : dst);
+         GLuint i;
+         ASSERT(dstType == GL_FLOAT);
+         for (i = 0; i < count; i++) {
+            if (!mask || mask[i]) {
+               dst4[i][RCOMP] = UBYTE_TO_FLOAT(src1[i][RCOMP]);
+               dst4[i][GCOMP] = UBYTE_TO_FLOAT(src1[i][GCOMP]);
+               dst4[i][BCOMP] = UBYTE_TO_FLOAT(src1[i][BCOMP]);
+               dst4[i][ACOMP] = UBYTE_TO_FLOAT(src1[i][ACOMP]);
+            }
+         }
+         if (useTemp)
+            memcpy(dst, tempBuffer, count * 4 * sizeof(GLfloat));
+      }
+      break;
+   case GL_UNSIGNED_SHORT:
+      if (dstType == GL_UNSIGNED_BYTE) {
+         const GLushort (*src2)[4] = (const GLushort (*)[4]) src;
+         GLubyte (*dst1)[4] = (GLubyte (*)[4]) (useTemp ? tempBuffer : dst);
+         GLuint i;
+         for (i = 0; i < count; i++) {
+            if (!mask || mask[i]) {
+               dst1[i][RCOMP] = USHORT_TO_UBYTE(src2[i][RCOMP]);
+               dst1[i][GCOMP] = USHORT_TO_UBYTE(src2[i][GCOMP]);
+               dst1[i][BCOMP] = USHORT_TO_UBYTE(src2[i][BCOMP]);
+               dst1[i][ACOMP] = USHORT_TO_UBYTE(src2[i][ACOMP]);
+            }
+         }
+         if (useTemp)
+            memcpy(dst, tempBuffer, count * 4 * sizeof(GLubyte));
+      }
+      else {
+         const GLushort (*src2)[4] = (const GLushort (*)[4]) src;
+         GLfloat (*dst4)[4] = (GLfloat (*)[4]) (useTemp ? tempBuffer : dst);
+         GLuint i;
+         ASSERT(dstType == GL_FLOAT);
+         for (i = 0; i < count; i++) {
+            if (!mask || mask[i]) {
+               dst4[i][RCOMP] = USHORT_TO_FLOAT(src2[i][RCOMP]);
+               dst4[i][GCOMP] = USHORT_TO_FLOAT(src2[i][GCOMP]);
+               dst4[i][BCOMP] = USHORT_TO_FLOAT(src2[i][BCOMP]);
+               dst4[i][ACOMP] = USHORT_TO_FLOAT(src2[i][ACOMP]);
+            }
+         }
+         if (useTemp)
+            memcpy(dst, tempBuffer, count * 4 * sizeof(GLfloat));
+      }
+      break;
+   case GL_FLOAT:
+      if (dstType == GL_UNSIGNED_BYTE) {
+         const GLfloat (*src4)[4] = (const GLfloat (*)[4]) src;
+         GLubyte (*dst1)[4] = (GLubyte (*)[4]) (useTemp ? tempBuffer : dst);
+         GLuint i;
+         for (i = 0; i < count; i++) {
+            if (!mask || mask[i]) {
+               UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][RCOMP], src4[i][RCOMP]);
+               UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][GCOMP], src4[i][GCOMP]);
+               UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][BCOMP], src4[i][BCOMP]);
+               UNCLAMPED_FLOAT_TO_UBYTE(dst1[i][ACOMP], src4[i][ACOMP]);
+            }
+         }
+         if (useTemp)
+            memcpy(dst, tempBuffer, count * 4 * sizeof(GLubyte));
+      }
+      else {
+         const GLfloat (*src4)[4] = (const GLfloat (*)[4]) src;
+         GLushort (*dst2)[4] = (GLushort (*)[4]) (useTemp ? tempBuffer : dst);
+         GLuint i;
+         ASSERT(dstType == GL_UNSIGNED_SHORT);
+         for (i = 0; i < count; i++) {
+            if (!mask || mask[i]) {
+               UNCLAMPED_FLOAT_TO_USHORT(dst2[i][RCOMP], src4[i][RCOMP]);
+               UNCLAMPED_FLOAT_TO_USHORT(dst2[i][GCOMP], src4[i][GCOMP]);
+               UNCLAMPED_FLOAT_TO_USHORT(dst2[i][BCOMP], src4[i][BCOMP]);
+               UNCLAMPED_FLOAT_TO_USHORT(dst2[i][ACOMP], src4[i][ACOMP]);
+            }
+         }
+         if (useTemp)
+            memcpy(dst, tempBuffer, count * 4 * sizeof(GLushort));
+      }
+      break;
+   default:
+      _mesa_problem(NULL, "Invalid datatype in _mesa_convert_colors");
+   }
+}
+
+
+
+
+/**
+ * Perform basic clipping for glDrawPixels.  The image's position and size
+ * and the unpack SkipPixels and SkipRows are adjusted so that the image
+ * region is entirely within the window and scissor bounds.
+ * NOTE: this will only work when glPixelZoom is (1, 1) or (1, -1).
+ * If Pixel.ZoomY is -1, *destY will be changed to be the first row which
+ * we'll actually write.  Beforehand, *destY-1 is the first drawing row.
+ *
+ * \return  GL_TRUE if image is ready for drawing or
+ *          GL_FALSE if image was completely clipped away (draw nothing)
+ */
+GLboolean
+_mesa_clip_drawpixels(const struct gl_context *ctx,
+                      GLint *destX, GLint *destY,
+                      GLsizei *width, GLsizei *height,
+                      struct gl_pixelstore_attrib *unpack)
+{
+   const struct gl_framebuffer *buffer = ctx->DrawBuffer;
+
+   if (unpack->RowLength == 0) {
+      unpack->RowLength = *width;
+   }
+
+   ASSERT(ctx->Pixel.ZoomX == 1.0F);
+   ASSERT(ctx->Pixel.ZoomY == 1.0F || ctx->Pixel.ZoomY == -1.0F);
+
+   /* left clipping */
+   if (*destX < buffer->_Xmin) {
+      unpack->SkipPixels += (buffer->_Xmin - *destX);
+      *width -= (buffer->_Xmin - *destX);
+      *destX = buffer->_Xmin;
+   }
+   /* right clipping */
+   if (*destX + *width > buffer->_Xmax)
+      *width -= (*destX + *width - buffer->_Xmax);
+
+   if (*width <= 0)
+      return GL_FALSE;
+
+   if (ctx->Pixel.ZoomY == 1.0F) {
+      /* bottom clipping */
+      if (*destY < buffer->_Ymin) {
+         unpack->SkipRows += (buffer->_Ymin - *destY);
+         *height -= (buffer->_Ymin - *destY);
+         *destY = buffer->_Ymin;
+      }
+      /* top clipping */
+      if (*destY + *height > buffer->_Ymax)
+         *height -= (*destY + *height - buffer->_Ymax);
+   }
+   else { /* upside down */
+      /* top clipping */
+      if (*destY > buffer->_Ymax) {
+         unpack->SkipRows += (*destY - buffer->_Ymax);
+         *height -= (*destY - buffer->_Ymax);
+         *destY = buffer->_Ymax;
+      }
+      /* bottom clipping */
+      if (*destY - *height < buffer->_Ymin)
+         *height -= (buffer->_Ymin - (*destY - *height));
+      /* adjust destY so it's the first row to write to */
+      (*destY)--;
+   }
+
+   if (*height <= 0)
+      return GL_FALSE;
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Perform clipping for glReadPixels.  The image's window position
+ * and size, and the pack skipPixels, skipRows and rowLength are adjusted
+ * so that the image region is entirely within the window bounds.
+ * Note: this is different from _mesa_clip_drawpixels() in that the
+ * scissor box is ignored, and we use the bounds of the current readbuffer
+ * surface.
+ *
+ * \return  GL_TRUE if region to read is in bounds
+ *          GL_FALSE if region is completely out of bounds (nothing to read)
+ */
+GLboolean
+_mesa_clip_readpixels(const struct gl_context *ctx,
+                      GLint *srcX, GLint *srcY,
+                      GLsizei *width, GLsizei *height,
+                      struct gl_pixelstore_attrib *pack)
+{
+   const struct gl_framebuffer *buffer = ctx->ReadBuffer;
+
+   if (pack->RowLength == 0) {
+      pack->RowLength = *width;
+   }
+
+   /* left clipping */
+   if (*srcX < 0) {
+      pack->SkipPixels += (0 - *srcX);
+      *width -= (0 - *srcX);
+      *srcX = 0;
+   }
+   /* right clipping */
+   if (*srcX + *width > (GLsizei) buffer->Width)
+      *width -= (*srcX + *width - buffer->Width);
+
+   if (*width <= 0)
+      return GL_FALSE;
+
+   /* bottom clipping */
+   if (*srcY < 0) {
+      pack->SkipRows += (0 - *srcY);
+      *height -= (0 - *srcY);
+      *srcY = 0;
+   }
+   /* top clipping */
+   if (*srcY + *height > (GLsizei) buffer->Height)
+      *height -= (*srcY + *height - buffer->Height);
+
+   if (*height <= 0)
+      return GL_FALSE;
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Do clipping for a glCopyTexSubImage call.
+ * The framebuffer source region might extend outside the framebuffer
+ * bounds.  Clip the source region against the framebuffer bounds and
+ * adjust the texture/dest position and size accordingly.
+ *
+ * \return GL_FALSE if region is totally clipped, GL_TRUE otherwise.
+ */
+GLboolean
+_mesa_clip_copytexsubimage(const struct gl_context *ctx,
+                           GLint *destX, GLint *destY,
+                           GLint *srcX, GLint *srcY,
+                           GLsizei *width, GLsizei *height)
+{
+   const struct gl_framebuffer *fb = ctx->ReadBuffer;
+   const GLint srcX0 = *srcX, srcY0 = *srcY;
+
+   if (_mesa_clip_to_region(0, 0, fb->Width, fb->Height,
+                            srcX, srcY, width, height)) {
+      *destX = *destX + *srcX - srcX0;
+      *destY = *destY + *srcY - srcY0;
+
+      return GL_TRUE;
+   }
+   else {
+      return GL_FALSE;
+   }
+}
+
+
+
+/**
+ * Clip the rectangle defined by (x, y, width, height) against the bounds
+ * specified by [xmin, xmax) and [ymin, ymax).
+ * \return GL_FALSE if rect is totally clipped, GL_TRUE otherwise.
+ */
+GLboolean
+_mesa_clip_to_region(GLint xmin, GLint ymin,
+                     GLint xmax, GLint ymax,
+                     GLint *x, GLint *y,
+                     GLsizei *width, GLsizei *height )
+{
+   /* left clipping */
+   if (*x < xmin) {
+      *width -= (xmin - *x);
+      *x = xmin;
+   }
+
+   /* right clipping */
+   if (*x + *width > xmax)
+      *width -= (*x + *width - xmax);
+
+   if (*width <= 0)
+      return GL_FALSE;
+
+   /* bottom (or top) clipping */
+   if (*y < ymin) {
+      *height -= (ymin - *y);
+      *y = ymin;
+   }
+
+   /* top (or bottom) clipping */
+   if (*y + *height > ymax)
+      *height -= (*y + *height - ymax);
+
+   if (*height <= 0)
+      return GL_FALSE;
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Clip dst coords against Xmax (or Ymax).
+ */
+static INLINE void
+clip_right_or_top(GLint *srcX0, GLint *srcX1,
+                  GLint *dstX0, GLint *dstX1,
+                  GLint maxValue)
+{
+   GLfloat t, bias;
+
+   if (*dstX1 > maxValue) {
+      /* X1 outside right edge */
+      ASSERT(*dstX0 < maxValue); /* X0 should be inside right edge */
+      t = (GLfloat) (maxValue - *dstX0) / (GLfloat) (*dstX1 - *dstX0);
+      /* chop off [t, 1] part */
+      ASSERT(t >= 0.0 && t <= 1.0);
+      *dstX1 = maxValue;
+      bias = (*srcX0 < *srcX1) ? 0.5F : -0.5F;
+      *srcX1 = *srcX0 + (GLint) (t * (*srcX1 - *srcX0) + bias);
+   }
+   else if (*dstX0 > maxValue) {
+      /* X0 outside right edge */
+      ASSERT(*dstX1 < maxValue); /* X1 should be inside right edge */
+      t = (GLfloat) (maxValue - *dstX1) / (GLfloat) (*dstX0 - *dstX1);
+      /* chop off [t, 1] part */
+      ASSERT(t >= 0.0 && t <= 1.0);
+      *dstX0 = maxValue;
+      bias = (*srcX0 < *srcX1) ? -0.5F : 0.5F;
+      *srcX0 = *srcX1 + (GLint) (t * (*srcX0 - *srcX1) + bias);
+   }
+}
+
+
+/**
+ * Clip dst coords against Xmin (or Ymin).
+ */
+static INLINE void
+clip_left_or_bottom(GLint *srcX0, GLint *srcX1,
+                    GLint *dstX0, GLint *dstX1,
+                    GLint minValue)
+{
+   GLfloat t, bias;
+
+   if (*dstX0 < minValue) {
+      /* X0 outside left edge */
+      ASSERT(*dstX1 > minValue); /* X1 should be inside left edge */
+      t = (GLfloat) (minValue - *dstX0) / (GLfloat) (*dstX1 - *dstX0);
+      /* chop off [0, t] part */
+      ASSERT(t >= 0.0 && t <= 1.0);
+      *dstX0 = minValue;
+      bias = (*srcX0 < *srcX1) ? 0.5F : -0.5F; /* flipped??? */
+      *srcX0 = *srcX0 + (GLint) (t * (*srcX1 - *srcX0) + bias);
+   }
+   else if (*dstX1 < minValue) {
+      /* X1 outside left edge */
+      ASSERT(*dstX0 > minValue); /* X0 should be inside left edge */
+      t = (GLfloat) (minValue - *dstX1) / (GLfloat) (*dstX0 - *dstX1);
+      /* chop off [0, t] part */
+      ASSERT(t >= 0.0 && t <= 1.0);
+      *dstX1 = minValue;
+      bias = (*srcX0 < *srcX1) ? 0.5F : -0.5F;
+      *srcX1 = *srcX1 + (GLint) (t * (*srcX0 - *srcX1) + bias);
+   }
+}
+
+
+/**
+ * Do clipping of blit src/dest rectangles.
+ * The dest rect is clipped against both the buffer bounds and scissor bounds.
+ * The src rect is just clipped against the buffer bounds.
+ *
+ * When either the src or dest rect is clipped, the other is also clipped
+ * proportionately!
+ *
+ * Note that X0 need not be less than X1 (same for Y) for either the source
+ * and dest rects.  That makes the clipping a little trickier.
+ *
+ * \return GL_TRUE if anything is left to draw, GL_FALSE if totally clipped
+ */
+GLboolean
+_mesa_clip_blit(struct gl_context *ctx,
+                GLint *srcX0, GLint *srcY0, GLint *srcX1, GLint *srcY1,
+                GLint *dstX0, GLint *dstY0, GLint *dstX1, GLint *dstY1)
+{
+   const GLint srcXmin = 0;
+   const GLint srcXmax = ctx->ReadBuffer->Width;
+   const GLint srcYmin = 0;
+   const GLint srcYmax = ctx->ReadBuffer->Height;
+
+   /* these include scissor bounds */
+   const GLint dstXmin = ctx->DrawBuffer->_Xmin;
+   const GLint dstXmax = ctx->DrawBuffer->_Xmax;
+   const GLint dstYmin = ctx->DrawBuffer->_Ymin;
+   const GLint dstYmax = ctx->DrawBuffer->_Ymax;
+
+   /*
+   printf("PreClipX:  src: %d .. %d  dst: %d .. %d\n",
+          *srcX0, *srcX1, *dstX0, *dstX1);
+   printf("PreClipY:  src: %d .. %d  dst: %d .. %d\n",
+          *srcY0, *srcY1, *dstY0, *dstY1);
+   */
+
+   /* trivial rejection tests */
+   if (*dstX0 == *dstX1)
+      return GL_FALSE; /* no width */
+   if (*dstX0 <= dstXmin && *dstX1 <= dstXmin)
+      return GL_FALSE; /* totally out (left) of bounds */
+   if (*dstX0 >= dstXmax && *dstX1 >= dstXmax)
+      return GL_FALSE; /* totally out (right) of bounds */
+
+   if (*dstY0 == *dstY1)
+      return GL_FALSE;
+   if (*dstY0 <= dstYmin && *dstY1 <= dstYmin)
+      return GL_FALSE;
+   if (*dstY0 >= dstYmax && *dstY1 >= dstYmax)
+      return GL_FALSE;
+
+   if (*srcX0 == *srcX1)
+      return GL_FALSE;
+   if (*srcX0 <= srcXmin && *srcX1 <= srcXmin)
+      return GL_FALSE;
+   if (*srcX0 >= srcXmax && *srcX1 >= srcXmax)
+      return GL_FALSE;
+
+   if (*srcY0 == *srcY1)
+      return GL_FALSE;
+   if (*srcY0 <= srcYmin && *srcY1 <= srcYmin)
+      return GL_FALSE;
+   if (*srcY0 >= srcYmax && *srcY1 >= srcYmax)
+      return GL_FALSE;
+
+   /*
+    * dest clip
+    */
+   clip_right_or_top(srcX0, srcX1, dstX0, dstX1, dstXmax);
+   clip_right_or_top(srcY0, srcY1, dstY0, dstY1, dstYmax);
+   clip_left_or_bottom(srcX0, srcX1, dstX0, dstX1, dstXmin);
+   clip_left_or_bottom(srcY0, srcY1, dstY0, dstY1, dstYmin);
+
+   /*
+    * src clip (just swap src/dst values from above)
+    */
+   clip_right_or_top(dstX0, dstX1, srcX0, srcX1, srcXmax);
+   clip_right_or_top(dstY0, dstY1, srcY0, srcY1, srcYmax);
+   clip_left_or_bottom(dstX0, dstX1, srcX0, srcX1, srcXmin);
+   clip_left_or_bottom(dstY0, dstY1, srcY0, srcY1, srcYmin);
+
+   /*
+   printf("PostClipX: src: %d .. %d  dst: %d .. %d\n",
+          *srcX0, *srcX1, *dstX0, *dstX1);
+   printf("PostClipY: src: %d .. %d  dst: %d .. %d\n",
+          *srcY0, *srcY1, *dstY0, *dstY1);
+   */
+
+   ASSERT(*dstX0 >= dstXmin);
+   ASSERT(*dstX0 <= dstXmax);
+   ASSERT(*dstX1 >= dstXmin);
+   ASSERT(*dstX1 <= dstXmax);
+
+   ASSERT(*dstY0 >= dstYmin);
+   ASSERT(*dstY0 <= dstYmax);
+   ASSERT(*dstY1 >= dstYmin);
+   ASSERT(*dstY1 <= dstYmax);
+
+   ASSERT(*srcX0 >= srcXmin);
+   ASSERT(*srcX0 <= srcXmax);
+   ASSERT(*srcX1 >= srcXmin);
+   ASSERT(*srcX1 <= srcXmax);
+
+   ASSERT(*srcY0 >= srcYmin);
+   ASSERT(*srcY0 <= srcYmax);
+   ASSERT(*srcY1 >= srcYmin);
+   ASSERT(*srcY1 <= srcYmax);
+
+   return GL_TRUE;
+}
diff --git a/mesalib/src/mesa/main/mipmap.c b/mesalib/src/mesa/main/mipmap.c
index f2724dbca..8a811cb72 100644
--- a/mesalib/src/mesa/main/mipmap.c
+++ b/mesalib/src/mesa/main/mipmap.c
@@ -706,6 +706,17 @@ do_row(GLenum datatype, GLuint comps, GLint srcWidth,
       }
    }
 
+   else if (datatype == GL_FLOAT_32_UNSIGNED_INT_24_8_REV && comps == 1) {
+      GLuint i, j, k;
+      const GLfloat *rowA = (const GLfloat *) srcRowA;
+      const GLfloat *rowB = (const GLfloat *) srcRowB;
+      GLfloat *dst = (GLfloat *) dstRow;
+      for (i = j = 0, k = k0; i < (GLuint) dstWidth;
+           i++, j += colStride, k += colStride) {
+         dst[i*2] = (rowA[j*2] + rowA[k*2] + rowB[j*2] + rowB[k*2]) * 0.25F;
+      }
+   }
+
    else {
       _mesa_problem(NULL, "bad format in do_row()");
    }
@@ -1341,6 +1352,15 @@ do_row_3D(GLenum datatype, GLuint comps, GLint srcWidth,
       }
    }
 
+   else if (datatype == GL_FLOAT_32_UNSIGNED_INT_24_8_REV && comps == 1) {
+      DECLARE_ROW_POINTERS(GLfloat, 2);
+
+      for (i = j = 0, k = k0; i < (GLuint) dstWidth;
+           i++, j += colStride, k += colStride) {
+         FILTER_F_3D(0);
+      }
+   }
+
    else {
       _mesa_problem(NULL, "bad format in do_row()");
    }
diff --git a/mesalib/src/mesa/main/mtypes.h b/mesalib/src/mesa/main/mtypes.h
index f018c75cc..b88118366 100644
--- a/mesalib/src/mesa/main/mtypes.h
+++ b/mesalib/src/mesa/main/mtypes.h
@@ -1856,7 +1856,7 @@ struct gl_program
    GLbitfield SystemValuesRead;   /**< Bitmask of SYSTEM_VALUE_x inputs used */
    GLbitfield InputFlags[MAX_PROGRAM_INPUTS];   /**< PROG_PARAM_BIT_x flags */
    GLbitfield OutputFlags[MAX_PROGRAM_OUTPUTS]; /**< PROG_PARAM_BIT_x flags */
-   GLbitfield TexturesUsed[MAX_TEXTURE_UNITS];  /**< TEXTURE_x_BIT bitmask */
+   GLbitfield TexturesUsed[MAX_COMBINED_TEXTURE_IMAGE_UNITS];  /**< TEXTURE_x_BIT bitmask */
    GLbitfield SamplersUsed;   /**< Bitfield of which samplers are used */
    GLbitfield ShadowSamplers; /**< Texture units used for shadow sampling. */
 
diff --git a/mesalib/src/mesa/main/pack.c b/mesalib/src/mesa/main/pack.c
index a232a51c3..7de1d05b9 100644
--- a/mesalib/src/mesa/main/pack.c
+++ b/mesalib/src/mesa/main/pack.c
@@ -1971,7 +1971,8 @@ extract_uint_indexes(GLuint n, GLuint indexes[],
           srcType == GL_INT ||
           srcType == GL_UNSIGNED_INT_24_8_EXT ||
           srcType == GL_HALF_FLOAT_ARB ||
-          srcType == GL_FLOAT);
+          srcType == GL_FLOAT ||
+          srcType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
 
    switch (srcType) {
       case GL_BITMAP:
@@ -2142,6 +2143,23 @@ extract_uint_indexes(GLuint n, GLuint indexes[],
             }
          }
          break;
+      case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
+         {
+            GLuint i;
+            const GLuint *s = (const GLuint *) src;
+            if (unpack->SwapBytes) {
+               for (i = 0; i < n; i++) {
+                  GLuint value = s[i*2+1];
+                  SWAP4BYTE(value);
+                  indexes[i] = value & 0xff;  /* lower 8 bits */
+               }
+            }
+            else {
+               for (i = 0; i < n; i++)
+                  indexes[i] = s[i*2+1] & 0xff;  /* lower 8 bits */
+            }
+         }
+         break;
 
       default:
          _mesa_problem(NULL, "bad srcType in extract_uint_indexes");
@@ -4412,11 +4430,13 @@ _mesa_unpack_stencil_span( struct gl_context *ctx, GLuint n,
           srcType == GL_INT ||
           srcType == GL_UNSIGNED_INT_24_8_EXT ||
           srcType == GL_HALF_FLOAT_ARB ||
-          srcType == GL_FLOAT);
+          srcType == GL_FLOAT ||
+          srcType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
 
    ASSERT(dstType == GL_UNSIGNED_BYTE ||
           dstType == GL_UNSIGNED_SHORT ||
-          dstType == GL_UNSIGNED_INT);
+          dstType == GL_UNSIGNED_INT ||
+          dstType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
 
    /* only shift and offset apply to stencil */
    transferOps &= IMAGE_SHIFT_OFFSET_BIT;
@@ -4488,6 +4508,15 @@ _mesa_unpack_stencil_span( struct gl_context *ctx, GLuint n,
          case GL_UNSIGNED_INT:
             memcpy(dest, indexes, n * sizeof(GLuint));
             break;
+         case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
+            {
+               GLuint *dst = (GLuint *) dest;
+               GLuint i;
+               for (i = 0; i < n; i++) {
+                  dst[i*2+1] = indexes[i] & 0xff; /* lower 8 bits */
+               }
+            }
+            break;
          default:
             _mesa_problem(ctx, "bad dstType in _mesa_unpack_stencil_span");
       }
@@ -4798,6 +4827,20 @@ _mesa_unpack_depth_span( struct gl_context *ctx, GLuint n,
             }
          }
          break;
+      case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
+         {
+            GLuint i;
+            const GLfloat *src = (const GLfloat *)source;
+            for (i = 0; i < n; i++) {
+               GLfloat value = src[i * 2];
+               if (srcPacking->SwapBytes) {
+                  SWAP4BYTE(value);
+               }
+               depthValues[i] = value;
+            }
+            needClamp = GL_TRUE;
+         }
+         break;
       case GL_FLOAT:
          DEPTH_VALUES(GLfloat, 1*);
          needClamp = GL_TRUE;
@@ -4874,9 +4917,18 @@ _mesa_unpack_depth_span( struct gl_context *ctx, GLuint n,
          zValues[i] = (GLushort) (depthValues[i] * (GLfloat) depthMax);
       }
    }
+   else if (dstType == GL_FLOAT) {
+      /* Nothing to do. depthValues is pointing to dest. */
+   }
+   else if (dstType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV) {
+      GLfloat *zValues = (GLfloat*) dest;
+      GLuint i;
+      for (i = 0; i < n; i++) {
+         zValues[i*2] = depthValues[i];
+      }
+   }
    else {
-      ASSERT(dstType == GL_FLOAT);
-      /*ASSERT(depthMax == 1.0F);*/
+      ASSERT(0);
    }
 
    free(depthTemp);
@@ -5004,10 +5056,11 @@ _mesa_pack_depth_span( struct gl_context *ctx, GLuint n, GLvoid *dest,
 
 
 /**
- * Pack depth and stencil values as GL_DEPTH_STENCIL/GL_UNSIGNED_INT_24_8.
+ * Pack depth and stencil values as GL_DEPTH_STENCIL (GL_UNSIGNED_INT_24_8 etc)
  */
 void
-_mesa_pack_depth_stencil_span(struct gl_context *ctx, GLuint n, GLuint *dest,
+_mesa_pack_depth_stencil_span(struct gl_context *ctx,GLuint n,
+                              GLenum dstType, GLuint *dest,
                               const GLfloat *depthVals,
                               const GLstencil *stencilVals,
                               const struct gl_pixelstore_attrib *dstPacking)
@@ -5037,9 +5090,19 @@ _mesa_pack_depth_stencil_span(struct gl_context *ctx, GLuint n, GLuint *dest,
       stencilVals = stencilCopy;
    }
 
-   for (i = 0; i < n; i++) {
-      GLuint z = (GLuint) (depthVals[i] * 0xffffff);
-      dest[i] = (z << 8) | (stencilVals[i] & 0xff);
+   switch (dstType) {
+   case GL_UNSIGNED_INT_24_8:
+      for (i = 0; i < n; i++) {
+         GLuint z = (GLuint) (depthVals[i] * 0xffffff);
+         dest[i] = (z << 8) | (stencilVals[i] & 0xff);
+      }
+      break;
+   case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
+      for (i = 0; i < n; i++) {
+         ((GLfloat*)dest)[i*2] = depthVals[i];
+         dest[i*2+1] = stencilVals[i] & 0xff;
+      }
+      break;
    }
 
    if (dstPacking->SwapBytes) {
diff --git a/mesalib/src/mesa/main/pack.h b/mesalib/src/mesa/main/pack.h
index 1f19a5a7c..00aab409e 100644
--- a/mesalib/src/mesa/main/pack.h
+++ b/mesalib/src/mesa/main/pack.h
@@ -1,147 +1,147 @@
-/*

- * Mesa 3-D graphics library

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- * Copyright (C) 1999-2010  VMware, Inc.  All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-#ifndef PACK_H

-#define PACK_H

-

-

-#include "mtypes.h"

-

-

-extern void

-_mesa_unpack_polygon_stipple(const GLubyte *pattern, GLuint dest[32],

-                             const struct gl_pixelstore_attrib *unpacking);

-

-

-extern void

-_mesa_pack_polygon_stipple(const GLuint pattern[32], GLubyte *dest,

-                           const struct gl_pixelstore_attrib *packing);

-

-

-extern GLvoid *

-_mesa_unpack_bitmap(GLint width, GLint height, const GLubyte *pixels,

-                    const struct gl_pixelstore_attrib *packing);

-

-extern void

-_mesa_pack_bitmap(GLint width, GLint height, const GLubyte *source,

-                  GLubyte *dest, const struct gl_pixelstore_attrib *packing);

-

-

-extern void

-_mesa_pack_rgba_span_float(struct gl_context *ctx, GLuint n,

-                           GLfloat rgba[][4],

-                           GLenum dstFormat, GLenum dstType, GLvoid *dstAddr,

-                           const struct gl_pixelstore_attrib *dstPacking,

-                           GLbitfield transferOps);

-

-

-extern void

-_mesa_unpack_color_span_chan(struct gl_context *ctx,

-                             GLuint n, GLenum dstFormat, GLchan dest[],

-                             GLenum srcFormat, GLenum srcType,

-                             const GLvoid *source,

-                             const struct gl_pixelstore_attrib *srcPacking,

-                             GLbitfield transferOps);

-

-

-extern void

-_mesa_unpack_color_span_float(struct gl_context *ctx,

-                              GLuint n, GLenum dstFormat, GLfloat dest[],

-                              GLenum srcFormat, GLenum srcType,

-                              const GLvoid *source,

-                              const struct gl_pixelstore_attrib *srcPacking,

-                              GLbitfield transferOps);

-

-extern void

-_mesa_unpack_color_span_uint(struct gl_context *ctx,

-                             GLuint n, GLenum dstFormat, GLuint *dest,

-                             GLenum srcFormat, GLenum srcType,

-                             const GLvoid *source,

-                             const struct gl_pixelstore_attrib *srcPacking);

-

-extern void

-_mesa_unpack_dudv_span_byte(struct gl_context *ctx,

-                            GLuint n, GLenum dstFormat, GLbyte dest[],

-                            GLenum srcFormat, GLenum srcType,

-                            const GLvoid *source,

-                            const struct gl_pixelstore_attrib *srcPacking,

-                            GLbitfield transferOps);

-

-extern void

-_mesa_unpack_index_span(struct gl_context *ctx, GLuint n,

-                        GLenum dstType, GLvoid *dest,

-                        GLenum srcType, const GLvoid *source,

-                        const struct gl_pixelstore_attrib *srcPacking,

-                        GLbitfield transferOps);

-

-

-extern void

-_mesa_pack_index_span(struct gl_context *ctx, GLuint n,

-                      GLenum dstType, GLvoid *dest, const GLuint *source,

-                      const struct gl_pixelstore_attrib *dstPacking,

-                      GLbitfield transferOps);

-

-

-extern void

-_mesa_unpack_stencil_span(struct gl_context *ctx, GLuint n,

-                          GLenum dstType, GLvoid *dest,

-                          GLenum srcType, const GLvoid *source,

-                          const struct gl_pixelstore_attrib *srcPacking,

-                          GLbitfield transferOps);

-

-extern void

-_mesa_pack_stencil_span(struct gl_context *ctx, GLuint n,

-                        GLenum dstType, GLvoid *dest, const GLstencil *source,

-                        const struct gl_pixelstore_attrib *dstPacking);

-

-

-extern void

-_mesa_unpack_depth_span(struct gl_context *ctx, GLuint n,

-                        GLenum dstType, GLvoid *dest, GLuint depthMax,

-                        GLenum srcType, const GLvoid *source,

-                        const struct gl_pixelstore_attrib *srcPacking);

-

-extern void

-_mesa_pack_depth_span(struct gl_context *ctx, GLuint n, GLvoid *dest,

-                      GLenum dstType, const GLfloat *depthSpan,

-                      const struct gl_pixelstore_attrib *dstPacking);

-

-

-extern void

-_mesa_pack_depth_stencil_span(struct gl_context *ctx,

-                              GLuint n, GLuint *dest,

-                              const GLfloat *depthVals,

-                              const GLstencil *stencilVals,

-                              const struct gl_pixelstore_attrib *dstPacking);

-

-

-extern void *

-_mesa_unpack_image(GLuint dimensions,

-                   GLsizei width, GLsizei height, GLsizei depth,

-                   GLenum format, GLenum type, const GLvoid *pixels,

-                   const struct gl_pixelstore_attrib *unpack);

-

-

-#endif

+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2010  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#ifndef PACK_H
+#define PACK_H
+
+
+#include "mtypes.h"
+
+
+extern void
+_mesa_unpack_polygon_stipple(const GLubyte *pattern, GLuint dest[32],
+                             const struct gl_pixelstore_attrib *unpacking);
+
+
+extern void
+_mesa_pack_polygon_stipple(const GLuint pattern[32], GLubyte *dest,
+                           const struct gl_pixelstore_attrib *packing);
+
+
+extern GLvoid *
+_mesa_unpack_bitmap(GLint width, GLint height, const GLubyte *pixels,
+                    const struct gl_pixelstore_attrib *packing);
+
+extern void
+_mesa_pack_bitmap(GLint width, GLint height, const GLubyte *source,
+                  GLubyte *dest, const struct gl_pixelstore_attrib *packing);
+
+
+extern void
+_mesa_pack_rgba_span_float(struct gl_context *ctx, GLuint n,
+                           GLfloat rgba[][4],
+                           GLenum dstFormat, GLenum dstType, GLvoid *dstAddr,
+                           const struct gl_pixelstore_attrib *dstPacking,
+                           GLbitfield transferOps);
+
+
+extern void
+_mesa_unpack_color_span_chan(struct gl_context *ctx,
+                             GLuint n, GLenum dstFormat, GLchan dest[],
+                             GLenum srcFormat, GLenum srcType,
+                             const GLvoid *source,
+                             const struct gl_pixelstore_attrib *srcPacking,
+                             GLbitfield transferOps);
+
+
+extern void
+_mesa_unpack_color_span_float(struct gl_context *ctx,
+                              GLuint n, GLenum dstFormat, GLfloat dest[],
+                              GLenum srcFormat, GLenum srcType,
+                              const GLvoid *source,
+                              const struct gl_pixelstore_attrib *srcPacking,
+                              GLbitfield transferOps);
+
+extern void
+_mesa_unpack_color_span_uint(struct gl_context *ctx,
+                             GLuint n, GLenum dstFormat, GLuint *dest,
+                             GLenum srcFormat, GLenum srcType,
+                             const GLvoid *source,
+                             const struct gl_pixelstore_attrib *srcPacking);
+
+extern void
+_mesa_unpack_dudv_span_byte(struct gl_context *ctx,
+                            GLuint n, GLenum dstFormat, GLbyte dest[],
+                            GLenum srcFormat, GLenum srcType,
+                            const GLvoid *source,
+                            const struct gl_pixelstore_attrib *srcPacking,
+                            GLbitfield transferOps);
+
+extern void
+_mesa_unpack_index_span(struct gl_context *ctx, GLuint n,
+                        GLenum dstType, GLvoid *dest,
+                        GLenum srcType, const GLvoid *source,
+                        const struct gl_pixelstore_attrib *srcPacking,
+                        GLbitfield transferOps);
+
+
+extern void
+_mesa_pack_index_span(struct gl_context *ctx, GLuint n,
+                      GLenum dstType, GLvoid *dest, const GLuint *source,
+                      const struct gl_pixelstore_attrib *dstPacking,
+                      GLbitfield transferOps);
+
+
+extern void
+_mesa_unpack_stencil_span(struct gl_context *ctx, GLuint n,
+                          GLenum dstType, GLvoid *dest,
+                          GLenum srcType, const GLvoid *source,
+                          const struct gl_pixelstore_attrib *srcPacking,
+                          GLbitfield transferOps);
+
+extern void
+_mesa_pack_stencil_span(struct gl_context *ctx, GLuint n,
+                        GLenum dstType, GLvoid *dest, const GLstencil *source,
+                        const struct gl_pixelstore_attrib *dstPacking);
+
+
+extern void
+_mesa_unpack_depth_span(struct gl_context *ctx, GLuint n,
+                        GLenum dstType, GLvoid *dest, GLuint depthMax,
+                        GLenum srcType, const GLvoid *source,
+                        const struct gl_pixelstore_attrib *srcPacking);
+
+extern void
+_mesa_pack_depth_span(struct gl_context *ctx, GLuint n, GLvoid *dest,
+                      GLenum dstType, const GLfloat *depthSpan,
+                      const struct gl_pixelstore_attrib *dstPacking);
+
+
+extern void
+_mesa_pack_depth_stencil_span(struct gl_context *ctx,GLuint n,
+                              GLenum dstType, GLuint *dest,
+                              const GLfloat *depthVals,
+                              const GLstencil *stencilVals,
+                              const struct gl_pixelstore_attrib *dstPacking);
+
+
+extern void *
+_mesa_unpack_image(GLuint dimensions,
+                   GLsizei width, GLsizei height, GLsizei depth,
+                   GLenum format, GLenum type, const GLvoid *pixels,
+                   const struct gl_pixelstore_attrib *unpack);
+
+
+#endif
diff --git a/mesalib/src/mesa/main/readpix.c b/mesalib/src/mesa/main/readpix.c
index 0331a8ca2..84c5b2228 100644
--- a/mesalib/src/mesa/main/readpix.c
+++ b/mesalib/src/mesa/main/readpix.c
@@ -61,6 +61,14 @@ _mesa_error_check_format_type(struct gl_context *ctx, GLenum format,
       return GL_TRUE;
    }
 
+   if (ctx->Extensions.ARB_depth_buffer_float
+       && type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV
+       && format != GL_DEPTH_STENCIL_EXT) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "gl%sPixels(format is not GL_DEPTH_STENCIL_EXT)", readDraw);
+      return GL_TRUE;
+   }
+
    /* basic combinations test */
    if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
       _mesa_error(ctx, GL_INVALID_ENUM,
@@ -142,10 +150,23 @@ _mesa_error_check_format_type(struct gl_context *ctx, GLenum format,
       }
       break;
    case GL_DEPTH_STENCIL_EXT:
-      if (!ctx->Extensions.EXT_packed_depth_stencil ||
-          type != GL_UNSIGNED_INT_24_8_EXT) {
-         _mesa_error(ctx, GL_INVALID_ENUM, "gl%sPixels(type)", readDraw);
-         return GL_TRUE;
+      /* Check validity of the type first. */
+      switch (type) {
+         case GL_UNSIGNED_INT_24_8_EXT:
+            if (!ctx->Extensions.EXT_packed_depth_stencil) {
+               _mesa_error(ctx, GL_INVALID_ENUM, "gl%sPixels(type)", readDraw);
+               return GL_TRUE;
+            }
+            break;
+         case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
+            if (!ctx->Extensions.ARB_depth_buffer_float) {
+               _mesa_error(ctx, GL_INVALID_ENUM, "gl%sPixels(type)", readDraw);
+               return GL_TRUE;
+            }
+            break;
+         default:
+            _mesa_error(ctx, GL_INVALID_ENUM, "gl%sPixels(type)", readDraw);
+            return GL_TRUE;
       }
       if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) ||
           (reading && !_mesa_source_buffer_exists(ctx, format))) {
diff --git a/mesalib/src/mesa/main/renderbuffer.c b/mesalib/src/mesa/main/renderbuffer.c
index c36175c60..f5b20020d 100644
--- a/mesalib/src/mesa/main/renderbuffer.c
+++ b/mesalib/src/mesa/main/renderbuffer.c
@@ -66,6 +66,9 @@ get_datatype_bytes(struct gl_renderbuffer *rb)
    int component_size;
 
    switch (rb->DataType) {
+   case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
+      component_size = 8;
+      break;
    case GL_FLOAT:
    case GL_UNSIGNED_INT:
    case GL_UNSIGNED_INT_24_8_EXT:
diff --git a/mesalib/src/mesa/main/samplerobj.c b/mesalib/src/mesa/main/samplerobj.c
index f7774fdd7..8f8d87b90 100644
--- a/mesalib/src/mesa/main/samplerobj.c
+++ b/mesalib/src/mesa/main/samplerobj.c
@@ -251,7 +251,7 @@ _mesa_BindSampler(GLuint unit, GLuint sampler)
    struct gl_sampler_object *sampObj;
    GET_CURRENT_CONTEXT(ctx);
 
-   if (unit >= ctx->Const.MaxTextureImageUnits) {
+   if (unit >= ctx->Const.MaxCombinedTextureImageUnits) {
       _mesa_error(ctx, GL_INVALID_VALUE, "glBindSampler(unit %u)", unit);
       return;
    }
diff --git a/mesalib/src/mesa/main/shaderapi.c b/mesalib/src/mesa/main/shaderapi.c
index b58e30de9..8df25c3f9 100644
--- a/mesalib/src/mesa/main/shaderapi.c
+++ b/mesalib/src/mesa/main/shaderapi.c
@@ -1032,7 +1032,7 @@ validate_samplers(const struct gl_program *prog, char *errMsg)
       "TEXTURE_2D",
       "TEXTURE_1D",
    };
-   GLint targetUsed[MAX_TEXTURE_IMAGE_UNITS];
+   GLint targetUsed[MAX_COMBINED_TEXTURE_IMAGE_UNITS];
    GLbitfield samplersUsed = prog->SamplersUsed;
    GLuint i;
 
@@ -1050,7 +1050,7 @@ validate_samplers(const struct gl_program *prog, char *errMsg)
       gl_texture_index target;
       GLint sampler = _mesa_ffs(samplersUsed) - 1;
       assert(sampler >= 0);
-      assert(sampler < MAX_TEXTURE_IMAGE_UNITS);
+      assert(sampler < Elements(prog->SamplerUnits));
       unit = prog->SamplerUnits[sampler];
       target = prog->SamplerTargets[sampler];
       if (targetUsed[unit] != -1 && targetUsed[unit] != (int) target) {
diff --git a/mesalib/src/mesa/main/texenv.c b/mesalib/src/mesa/main/texenv.c
index 9228e354a..c0d0f3779 100644
--- a/mesalib/src/mesa/main/texenv.c
+++ b/mesalib/src/mesa/main/texenv.c
@@ -419,7 +419,7 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
-      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
+      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxCombinedTextureImageUnits;
    if (ctx->Texture.CurrentUnit >= maxUnit) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "glTexEnvfv(current unit)");
       return;
@@ -748,7 +748,7 @@ _mesa_GetTexEnvfv( GLenum target, GLenum pname, GLfloat *params )
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
-      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
+      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxCombinedTextureImageUnits;
    if (ctx->Texture.CurrentUnit >= maxUnit) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexEnvfv(current unit)");
       return;
@@ -817,7 +817,7 @@ _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
-      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
+      ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxCombinedTextureImageUnits;
    if (ctx->Texture.CurrentUnit >= maxUnit) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexEnviv(current unit)");
       return;
diff --git a/mesalib/src/mesa/main/texfetch.c b/mesalib/src/mesa/main/texfetch.c
index ab3abf657..72283eb68 100644
--- a/mesalib/src/mesa/main/texfetch.c
+++ b/mesalib/src/mesa/main/texfetch.c
@@ -1,1050 +1,1064 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.7

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- * Copyright (c) 2009  VMware, Inc.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-/**

- * \file texfetch.c

- *

- * Texel fetch/store functions

- *

- * \author Gareth Hughes

- */

-

-

-#include "colormac.h"

-#include "macros.h"

-#include "texcompress.h"

-#include "texcompress_fxt1.h"

-#include "texcompress_s3tc.h"

-#include "texcompress_rgtc.h"

-#include "texfetch.h"

-#include "teximage.h"

-#include "../../gallium/auxiliary/util/u_format_rgb9e5.h"

-#include "../../gallium/auxiliary/util/u_format_r11g11b10f.h"

-

-

-/**

- * Convert an 8-bit sRGB value from non-linear space to a

- * linear RGB value in [0, 1].

- * Implemented with a 256-entry lookup table.

- */

-static INLINE GLfloat

-nonlinear_to_linear(GLubyte cs8)

-{

-   static GLfloat table[256];

-   static GLboolean tableReady = GL_FALSE;

-   if (!tableReady) {

-      /* compute lookup table now */

-      GLuint i;

-      for (i = 0; i < 256; i++) {

-         const GLfloat cs = UBYTE_TO_FLOAT(i);

-         if (cs <= 0.04045) {

-            table[i] = cs / 12.92f;

-         }

-         else {

-            table[i] = (GLfloat) pow((cs + 0.055) / 1.055, 2.4);

-         }

-      }

-      tableReady = GL_TRUE;

-   }

-   return table[cs8];

-}

-

-

-

-/* Texel fetch routines for all supported formats

- */

-#define DIM 1

-#include "texfetch_tmp.h"

-

-#define DIM 2

-#include "texfetch_tmp.h"

-

-#define DIM 3

-#include "texfetch_tmp.h"

-

-/**

- * Null texel fetch function.

- *

- * Have to have this so the FetchTexel function pointer is never NULL.

- */

-static void fetch_null_texelf( const struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   (void) texImage; (void) i; (void) j; (void) k;

-   texel[RCOMP] = 0.0;

-   texel[GCOMP] = 0.0;

-   texel[BCOMP] = 0.0;

-   texel[ACOMP] = 0.0;

-   _mesa_warning(NULL, "fetch_null_texelf() called!");

-}

-

-static void store_null_texel(struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, const void *texel)

-{

-   (void) texImage;

-   (void) i;

-   (void) j;

-   (void) k;

-   (void) texel;

-   /* no-op */

-}

-

-

-

-/**

- * Table to map MESA_FORMAT_ to texel fetch/store funcs.

- * XXX this is somewhat temporary.

- */

-static struct {

-   gl_format Name;

-   FetchTexelFuncF Fetch1D;

-   FetchTexelFuncF Fetch2D;

-   FetchTexelFuncF Fetch3D;

-   StoreTexelFunc StoreTexel;

-}

-texfetch_funcs[MESA_FORMAT_COUNT] =

-{

-   {

-      MESA_FORMAT_NONE,

-      fetch_null_texelf,

-      fetch_null_texelf,

-      fetch_null_texelf,

-      store_null_texel

-   },

-

-   {

-      MESA_FORMAT_RGBA8888,

-      fetch_texel_1d_f_rgba8888,

-      fetch_texel_2d_f_rgba8888,

-      fetch_texel_3d_f_rgba8888,

-      store_texel_rgba8888

-   },

-   {

-      MESA_FORMAT_RGBA8888_REV,

-      fetch_texel_1d_f_rgba8888_rev,

-      fetch_texel_2d_f_rgba8888_rev,

-      fetch_texel_3d_f_rgba8888_rev,

-      store_texel_rgba8888_rev

-   },

-   {

-      MESA_FORMAT_ARGB8888,

-      fetch_texel_1d_f_argb8888,

-      fetch_texel_2d_f_argb8888,

-      fetch_texel_3d_f_argb8888,

-      store_texel_argb8888

-   },

-   {

-      MESA_FORMAT_ARGB8888_REV,

-      fetch_texel_1d_f_argb8888_rev,

-      fetch_texel_2d_f_argb8888_rev,

-      fetch_texel_3d_f_argb8888_rev,

-      store_texel_argb8888_rev

-   },

-   {

-      MESA_FORMAT_XRGB8888,

-      fetch_texel_1d_f_xrgb8888,

-      fetch_texel_2d_f_xrgb8888,

-      fetch_texel_3d_f_xrgb8888,

-      store_texel_xrgb8888

-   },

-   {

-      MESA_FORMAT_XRGB8888_REV,

-      fetch_texel_1d_f_xrgb8888_rev,

-      fetch_texel_2d_f_xrgb8888_rev,

-      fetch_texel_3d_f_xrgb8888_rev,

-      store_texel_xrgb8888_rev,

-   },

-   {

-      MESA_FORMAT_RGB888,

-      fetch_texel_1d_f_rgb888,

-      fetch_texel_2d_f_rgb888,

-      fetch_texel_3d_f_rgb888,

-      store_texel_rgb888

-   },

-   {

-      MESA_FORMAT_BGR888,

-      fetch_texel_1d_f_bgr888,

-      fetch_texel_2d_f_bgr888,

-      fetch_texel_3d_f_bgr888,

-      store_texel_bgr888

-   },

-   {

-      MESA_FORMAT_RGB565,

-      fetch_texel_1d_f_rgb565,

-      fetch_texel_2d_f_rgb565,

-      fetch_texel_3d_f_rgb565,

-      store_texel_rgb565

-   },

-   {

-      MESA_FORMAT_RGB565_REV,

-      fetch_texel_1d_f_rgb565_rev,

-      fetch_texel_2d_f_rgb565_rev,

-      fetch_texel_3d_f_rgb565_rev,

-      store_texel_rgb565_rev

-   },

-   {

-      MESA_FORMAT_ARGB4444,

-      fetch_texel_1d_f_argb4444,

-      fetch_texel_2d_f_argb4444,

-      fetch_texel_3d_f_argb4444,

-      store_texel_argb4444

-   },

-   {

-      MESA_FORMAT_ARGB4444_REV,

-      fetch_texel_1d_f_argb4444_rev,

-      fetch_texel_2d_f_argb4444_rev,

-      fetch_texel_3d_f_argb4444_rev,

-      store_texel_argb4444_rev

-   },

-   {

-      MESA_FORMAT_RGBA5551,

-      fetch_texel_1d_f_rgba5551,

-      fetch_texel_2d_f_rgba5551,

-      fetch_texel_3d_f_rgba5551,

-      store_texel_rgba5551

-   },

-   {

-      MESA_FORMAT_ARGB1555,

-      fetch_texel_1d_f_argb1555,

-      fetch_texel_2d_f_argb1555,

-      fetch_texel_3d_f_argb1555,

-      store_texel_argb1555

-   },

-   {

-      MESA_FORMAT_ARGB1555_REV,

-      fetch_texel_1d_f_argb1555_rev,

-      fetch_texel_2d_f_argb1555_rev,

-      fetch_texel_3d_f_argb1555_rev,

-      store_texel_argb1555_rev

-   },

-   {

-      MESA_FORMAT_AL44,

-      fetch_texel_1d_f_al44,

-      fetch_texel_2d_f_al44,

-      fetch_texel_3d_f_al44,

-      store_texel_al44

-   },

-   {

-      MESA_FORMAT_AL88,

-      fetch_texel_1d_f_al88,

-      fetch_texel_2d_f_al88,

-      fetch_texel_3d_f_al88,

-      store_texel_al88

-   },

-   {

-      MESA_FORMAT_AL88_REV,

-      fetch_texel_1d_f_al88_rev,

-      fetch_texel_2d_f_al88_rev,

-      fetch_texel_3d_f_al88_rev,

-      store_texel_al88_rev

-   },

-   {

-      MESA_FORMAT_AL1616,

-      fetch_texel_1d_f_al1616,

-      fetch_texel_2d_f_al1616,

-      fetch_texel_3d_f_al1616,

-      store_texel_al1616

-   },

-   {

-      MESA_FORMAT_AL1616_REV,

-      fetch_texel_1d_f_al1616_rev,

-      fetch_texel_2d_f_al1616_rev,

-      fetch_texel_3d_f_al1616_rev,

-      store_texel_al1616_rev

-   },

-   {

-      MESA_FORMAT_RGB332,

-      fetch_texel_1d_f_rgb332,

-      fetch_texel_2d_f_rgb332,

-      fetch_texel_3d_f_rgb332,

-      store_texel_rgb332

-   },

-   {

-      MESA_FORMAT_A8,

-      fetch_texel_1d_f_a8,

-      fetch_texel_2d_f_a8,

-      fetch_texel_3d_f_a8,

-      store_texel_a8

-   },

-   {

-      MESA_FORMAT_A16,

-      fetch_texel_1d_f_a16,

-      fetch_texel_2d_f_a16,

-      fetch_texel_3d_f_a16,

-      store_texel_a16

-   },

-   {

-      MESA_FORMAT_L8,

-      fetch_texel_1d_f_l8,

-      fetch_texel_2d_f_l8,

-      fetch_texel_3d_f_l8,

-      store_texel_l8

-   },

-   {

-      MESA_FORMAT_L16,

-      fetch_texel_1d_f_l16,

-      fetch_texel_2d_f_l16,

-      fetch_texel_3d_f_l16,

-      store_texel_l16

-   },

-   {

-      MESA_FORMAT_I8,

-      fetch_texel_1d_f_i8,

-      fetch_texel_2d_f_i8,

-      fetch_texel_3d_f_i8,

-      store_texel_i8

-   },

-   {

-      MESA_FORMAT_I16,

-      fetch_texel_1d_f_i16,

-      fetch_texel_2d_f_i16,

-      fetch_texel_3d_f_i16,

-      store_texel_i16

-   },

-   {

-      MESA_FORMAT_CI8,

-      fetch_texel_1d_f_ci8,

-      fetch_texel_2d_f_ci8,

-      fetch_texel_3d_f_ci8,

-      store_texel_ci8

-   },

-   {

-      MESA_FORMAT_YCBCR,

-      fetch_texel_1d_f_ycbcr,

-      fetch_texel_2d_f_ycbcr,

-      fetch_texel_3d_f_ycbcr,

-      store_texel_ycbcr

-   },

-   {

-      MESA_FORMAT_YCBCR_REV,

-      fetch_texel_1d_f_ycbcr_rev,

-      fetch_texel_2d_f_ycbcr_rev,

-      fetch_texel_3d_f_ycbcr_rev,

-      store_texel_ycbcr_rev

-   },

-   {

-      MESA_FORMAT_R8,

-      fetch_texel_1d_f_r8,

-      fetch_texel_2d_f_r8,

-      fetch_texel_3d_f_r8,

-      store_texel_r8,

-   },

-   {

-      MESA_FORMAT_RG88,

-      fetch_texel_1d_f_rg88,

-      fetch_texel_2d_f_rg88,

-      fetch_texel_3d_f_rg88,

-      store_texel_rg88,

-   },

-   {

-      MESA_FORMAT_RG88_REV,

-      fetch_texel_1d_f_rg88_rev,

-      fetch_texel_2d_f_rg88_rev,

-      fetch_texel_3d_f_rg88_rev,

-      store_texel_rg88_rev,

-   },

-   {

-      MESA_FORMAT_R16,

-      fetch_texel_1d_f_r16,

-      fetch_texel_2d_f_r16,

-      fetch_texel_3d_f_r16,

-      store_texel_r16,

-   },

-   {

-      MESA_FORMAT_RG1616,

-      fetch_texel_1d_f_rg1616,

-      fetch_texel_2d_f_rg1616,

-      fetch_texel_3d_f_rg1616,

-      store_texel_rg1616,

-   },

-   {

-      MESA_FORMAT_RG1616_REV,

-      fetch_texel_1d_f_rg1616_rev,

-      fetch_texel_2d_f_rg1616_rev,

-      fetch_texel_3d_f_rg1616_rev,

-      store_texel_rg1616_rev,

-   },

-   {

-      MESA_FORMAT_ARGB2101010,

-      fetch_texel_1d_f_argb2101010,

-      fetch_texel_2d_f_argb2101010,

-      fetch_texel_3d_f_argb2101010,

-      store_texel_argb2101010

-   },

-   {

-      MESA_FORMAT_Z24_S8,

-      fetch_texel_1d_f_z24_s8,

-      fetch_texel_2d_f_z24_s8,

-      fetch_texel_3d_f_z24_s8,

-      store_texel_z24_s8

-   },

-   {

-      MESA_FORMAT_S8_Z24,

-      fetch_texel_1d_f_s8_z24,

-      fetch_texel_2d_f_s8_z24,

-      fetch_texel_3d_f_s8_z24,

-      store_texel_s8_z24

-   },

-   {

-      MESA_FORMAT_Z16,

-      fetch_texel_1d_f_z16,

-      fetch_texel_2d_f_z16,

-      fetch_texel_3d_f_z16,

-      store_texel_z16

-   },

-   {

-      MESA_FORMAT_X8_Z24,

-      fetch_texel_1d_f_s8_z24,

-      fetch_texel_2d_f_s8_z24,

-      fetch_texel_3d_f_s8_z24,

-      store_texel_s8_z24

-   },

-   {

-      MESA_FORMAT_Z24_X8,

-      fetch_texel_1d_f_z24_s8,

-      fetch_texel_2d_f_z24_s8,

-      fetch_texel_3d_f_z24_s8,

-      store_texel_z24_s8

-   },

-   {

-      MESA_FORMAT_Z32,

-      fetch_texel_1d_f_z32,

-      fetch_texel_2d_f_z32,

-      fetch_texel_3d_f_z32,

-      store_texel_z32

-   },

-   {

-      MESA_FORMAT_S8,

-      NULL,

-      NULL,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_SRGB8,

-      fetch_texel_1d_srgb8,

-      fetch_texel_2d_srgb8,

-      fetch_texel_3d_srgb8,

-      store_texel_srgb8

-   },

-   {

-      MESA_FORMAT_SRGBA8,

-      fetch_texel_1d_srgba8,

-      fetch_texel_2d_srgba8,

-      fetch_texel_3d_srgba8,

-      store_texel_srgba8

-   },

-   {

-      MESA_FORMAT_SARGB8,

-      fetch_texel_1d_sargb8,

-      fetch_texel_2d_sargb8,

-      fetch_texel_3d_sargb8,

-      store_texel_sargb8

-   },

-   {

-      MESA_FORMAT_SL8,

-      fetch_texel_1d_sl8,

-      fetch_texel_2d_sl8,

-      fetch_texel_3d_sl8,

-      store_texel_sl8

-   },

-   {

-      MESA_FORMAT_SLA8,

-      fetch_texel_1d_sla8,

-      fetch_texel_2d_sla8,

-      fetch_texel_3d_sla8,

-      store_texel_sla8

-   },

-   {

-      MESA_FORMAT_SRGB_DXT1,

-      NULL,

-      _mesa_fetch_texel_2d_f_srgb_dxt1,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_SRGBA_DXT1,

-      NULL,

-      _mesa_fetch_texel_2d_f_srgba_dxt1,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_SRGBA_DXT3,

-      NULL,

-      _mesa_fetch_texel_2d_f_srgba_dxt3,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_SRGBA_DXT5,

-      NULL,

-      _mesa_fetch_texel_2d_f_srgba_dxt5,

-      NULL,

-      NULL

-   },

-

-   {

-      MESA_FORMAT_RGB_FXT1,

-      NULL,

-      _mesa_fetch_texel_2d_f_rgb_fxt1,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_RGBA_FXT1,

-      NULL,

-      _mesa_fetch_texel_2d_f_rgba_fxt1,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_RGB_DXT1,

-      NULL,

-      _mesa_fetch_texel_2d_f_rgb_dxt1,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_RGBA_DXT1,

-      NULL,

-      _mesa_fetch_texel_2d_f_rgba_dxt1,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_RGBA_DXT3,

-      NULL,

-      _mesa_fetch_texel_2d_f_rgba_dxt3,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_RGBA_DXT5,

-      NULL,

-      _mesa_fetch_texel_2d_f_rgba_dxt5,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_RGBA_FLOAT32,

-      fetch_texel_1d_f_rgba_f32,

-      fetch_texel_2d_f_rgba_f32,

-      fetch_texel_3d_f_rgba_f32,

-      store_texel_rgba_f32

-   },

-   {

-      MESA_FORMAT_RGBA_FLOAT16,

-      fetch_texel_1d_f_rgba_f16,

-      fetch_texel_2d_f_rgba_f16,

-      fetch_texel_3d_f_rgba_f16,

-      store_texel_rgba_f16

-   },

-   {

-      MESA_FORMAT_RGB_FLOAT32,

-      fetch_texel_1d_f_rgb_f32,

-      fetch_texel_2d_f_rgb_f32,

-      fetch_texel_3d_f_rgb_f32,

-      store_texel_rgb_f32

-   },

-   {

-      MESA_FORMAT_RGB_FLOAT16,

-      fetch_texel_1d_f_rgb_f16,

-      fetch_texel_2d_f_rgb_f16,

-      fetch_texel_3d_f_rgb_f16,

-      store_texel_rgb_f16

-   },

-   {

-      MESA_FORMAT_ALPHA_FLOAT32,

-      fetch_texel_1d_f_alpha_f32,

-      fetch_texel_2d_f_alpha_f32,

-      fetch_texel_3d_f_alpha_f32,

-      store_texel_alpha_f32

-   },

-   {

-      MESA_FORMAT_ALPHA_FLOAT16,

-      fetch_texel_1d_f_alpha_f16,

-      fetch_texel_2d_f_alpha_f16,

-      fetch_texel_3d_f_alpha_f16,

-      store_texel_alpha_f16

-   },

-   {

-      MESA_FORMAT_LUMINANCE_FLOAT32,

-      fetch_texel_1d_f_luminance_f32,

-      fetch_texel_2d_f_luminance_f32,

-      fetch_texel_3d_f_luminance_f32,

-      store_texel_luminance_f32

-   },

-   {

-      MESA_FORMAT_LUMINANCE_FLOAT16,

-      fetch_texel_1d_f_luminance_f16,

-      fetch_texel_2d_f_luminance_f16,

-      fetch_texel_3d_f_luminance_f16,

-      store_texel_luminance_f16

-   },

-   {

-      MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32,

-      fetch_texel_1d_f_luminance_alpha_f32,

-      fetch_texel_2d_f_luminance_alpha_f32,

-      fetch_texel_3d_f_luminance_alpha_f32,

-      store_texel_luminance_alpha_f32

-   },

-   {

-      MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16,

-      fetch_texel_1d_f_luminance_alpha_f16,

-      fetch_texel_2d_f_luminance_alpha_f16,

-      fetch_texel_3d_f_luminance_alpha_f16,

-      store_texel_luminance_alpha_f16

-   },

-   {

-      MESA_FORMAT_INTENSITY_FLOAT32,

-      fetch_texel_1d_f_intensity_f32,

-      fetch_texel_2d_f_intensity_f32,

-      fetch_texel_3d_f_intensity_f32,

-      store_texel_intensity_f32

-   },

-   {

-      MESA_FORMAT_INTENSITY_FLOAT16,

-      fetch_texel_1d_f_intensity_f16,

-      fetch_texel_2d_f_intensity_f16,

-      fetch_texel_3d_f_intensity_f16,

-      store_texel_intensity_f16

-   },

-   {

-      MESA_FORMAT_R_FLOAT32,

-      fetch_texel_1d_f_r_f32,

-      fetch_texel_2d_f_r_f32,

-      fetch_texel_3d_f_r_f32,

-      store_texel_r_f32

-   },

-   {

-      MESA_FORMAT_R_FLOAT16,

-      fetch_texel_1d_f_r_f16,

-      fetch_texel_2d_f_r_f16,

-      fetch_texel_3d_f_r_f16,

-      store_texel_r_f16

-   },

-   {

-      MESA_FORMAT_RG_FLOAT32,

-      fetch_texel_1d_f_rg_f32,

-      fetch_texel_2d_f_rg_f32,

-      fetch_texel_3d_f_rg_f32,

-      store_texel_rg_f32

-   },

-   {

-      MESA_FORMAT_RG_FLOAT16,

-      fetch_texel_1d_f_rg_f16,

-      fetch_texel_2d_f_rg_f16,

-      fetch_texel_3d_f_rg_f16,

-      store_texel_rg_f16

-   },

-

-   /* non-normalized, signed int */

-   {

-      MESA_FORMAT_RGBA_INT8,

-      fetch_texel_1d_rgba_int8,

-      fetch_texel_2d_rgba_int8,

-      fetch_texel_3d_rgba_int8,

-      store_texel_rgba_int8

-   },

-   {

-      MESA_FORMAT_RGBA_INT16,

-      fetch_texel_1d_rgba_int16,

-      fetch_texel_2d_rgba_int16,

-      fetch_texel_3d_rgba_int16,

-      store_texel_rgba_int16

-   },

-   {

-      MESA_FORMAT_RGBA_INT32,

-      fetch_texel_1d_rgba_int32,

-      fetch_texel_2d_rgba_int32,

-      fetch_texel_3d_rgba_int32,

-      store_texel_rgba_int32

-   },

-

-   /* non-normalized, unsigned int */

-   {

-      MESA_FORMAT_RGBA_UINT8,

-      fetch_texel_1d_rgba_uint8,

-      fetch_texel_2d_rgba_uint8,

-      fetch_texel_3d_rgba_uint8,

-      store_texel_rgba_uint8

-   },

-   {

-      MESA_FORMAT_RGBA_UINT16,

-      fetch_texel_1d_rgba_uint16,

-      fetch_texel_2d_rgba_uint16,

-      fetch_texel_3d_rgba_uint16,

-      store_texel_rgba_uint16

-   },

-   {

-      MESA_FORMAT_RGBA_UINT32,

-      fetch_texel_1d_rgba_uint32,

-      fetch_texel_2d_rgba_uint32,

-      fetch_texel_3d_rgba_uint32,

-      store_texel_rgba_uint32

-   },

-

-   /* dudv */

-   {

-      MESA_FORMAT_DUDV8,

-      fetch_texel_1d_dudv8,

-      fetch_texel_2d_dudv8,

-      fetch_texel_3d_dudv8,

-      NULL

-   },

-

-   /* signed, normalized */

-   {

-      MESA_FORMAT_SIGNED_R8,

-      fetch_texel_1d_signed_r8,

-      fetch_texel_2d_signed_r8,

-      fetch_texel_3d_signed_r8,

-      store_texel_signed_r8

-   },

-   {

-      MESA_FORMAT_SIGNED_RG88_REV,

-      fetch_texel_1d_signed_rg88_rev,

-      fetch_texel_2d_signed_rg88_rev,

-      fetch_texel_3d_signed_rg88_rev,

-      store_texel_signed_rg88_rev

-   },

-   {

-      MESA_FORMAT_SIGNED_RGBX8888,

-      fetch_texel_1d_signed_rgbx8888,

-      fetch_texel_2d_signed_rgbx8888,

-      fetch_texel_3d_signed_rgbx8888,

-      store_texel_signed_rgbx8888

-   },

-   {

-      MESA_FORMAT_SIGNED_RGBA8888,

-      fetch_texel_1d_signed_rgba8888,

-      fetch_texel_2d_signed_rgba8888,

-      fetch_texel_3d_signed_rgba8888,

-      store_texel_signed_rgba8888

-   },

-   {

-      MESA_FORMAT_SIGNED_RGBA8888_REV,

-      fetch_texel_1d_signed_rgba8888_rev,

-      fetch_texel_2d_signed_rgba8888_rev,

-      fetch_texel_3d_signed_rgba8888_rev,

-      store_texel_signed_rgba8888_rev

-   },

-   {

-      MESA_FORMAT_SIGNED_R16,

-      fetch_texel_1d_signed_r16,

-      fetch_texel_2d_signed_r16,

-      fetch_texel_3d_signed_r16,

-      store_texel_signed_r16

-   },

-   {

-      MESA_FORMAT_SIGNED_GR1616,

-      fetch_texel_1d_signed_rg1616,

-      fetch_texel_2d_signed_rg1616,

-      fetch_texel_3d_signed_rg1616,

-      store_texel_signed_rg1616

-   },

-   {

-      MESA_FORMAT_SIGNED_RGB_16,

-      fetch_texel_1d_signed_rgb_16,

-      fetch_texel_2d_signed_rgb_16,

-      fetch_texel_3d_signed_rgb_16,

-      store_texel_signed_rgb_16

-   },

-   {

-      MESA_FORMAT_SIGNED_RGBA_16,

-      fetch_texel_1d_signed_rgba_16,

-      fetch_texel_2d_signed_rgba_16,

-      fetch_texel_3d_signed_rgba_16,

-      store_texel_signed_rgba_16

-   },

-   {

-      MESA_FORMAT_RGBA_16,

-      fetch_texel_1d_rgba_16,

-      fetch_texel_2d_rgba_16,

-      fetch_texel_3d_rgba_16,

-      store_texel_rgba_16

-   },

-   {

-      MESA_FORMAT_RED_RGTC1,

-      NULL,

-      _mesa_fetch_texel_2d_f_red_rgtc1,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_SIGNED_RED_RGTC1,

-      NULL,

-      _mesa_fetch_texel_2d_f_signed_red_rgtc1,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_RG_RGTC2,

-      NULL,

-      _mesa_fetch_texel_2d_f_rg_rgtc2,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_SIGNED_RG_RGTC2,

-      NULL,

-      _mesa_fetch_texel_2d_f_signed_rg_rgtc2,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_L_LATC1,

-      NULL,

-      _mesa_fetch_texel_2d_f_l_latc1,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_SIGNED_L_LATC1,

-      NULL,

-      _mesa_fetch_texel_2d_f_signed_l_latc1,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_LA_LATC2,

-      NULL,

-      _mesa_fetch_texel_2d_f_la_latc2,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_SIGNED_LA_LATC2,

-      NULL,

-      _mesa_fetch_texel_2d_f_signed_la_latc2,

-      NULL,

-      NULL

-   },

-   {

-      MESA_FORMAT_SIGNED_A8,

-      fetch_texel_1d_signed_a8,

-      fetch_texel_2d_signed_a8,

-      fetch_texel_3d_signed_a8,

-      store_texel_signed_a8

-   },

-   {

-      MESA_FORMAT_SIGNED_L8,

-      fetch_texel_1d_signed_l8,

-      fetch_texel_2d_signed_l8,

-      fetch_texel_3d_signed_l8,

-      store_texel_signed_l8

-   },

-   {

-      MESA_FORMAT_SIGNED_AL88,

-      fetch_texel_1d_signed_al88,

-      fetch_texel_2d_signed_al88,

-      fetch_texel_3d_signed_al88,

-      store_texel_signed_al88

-   },

-   {

-      MESA_FORMAT_SIGNED_I8,

-      fetch_texel_1d_signed_i8,

-      fetch_texel_2d_signed_i8,

-      fetch_texel_3d_signed_i8,

-      store_texel_signed_i8

-   },

-   {

-      MESA_FORMAT_SIGNED_A16,

-      fetch_texel_1d_signed_a16,

-      fetch_texel_2d_signed_a16,

-      fetch_texel_3d_signed_a16,

-      store_texel_signed_a16

-   },

-   {

-      MESA_FORMAT_SIGNED_L16,

-      fetch_texel_1d_signed_l16,

-      fetch_texel_2d_signed_l16,

-      fetch_texel_3d_signed_l16,

-      store_texel_signed_l16

-   },

-   {

-      MESA_FORMAT_SIGNED_AL1616,

-      fetch_texel_1d_signed_al1616,

-      fetch_texel_2d_signed_al1616,

-      fetch_texel_3d_signed_al1616,

-      store_texel_signed_al1616

-   },

-   {

-      MESA_FORMAT_SIGNED_I16,

-      fetch_texel_1d_signed_i16,

-      fetch_texel_2d_signed_i16,

-      fetch_texel_3d_signed_i16,

-      store_texel_signed_i16

-   },

-   {

-      MESA_FORMAT_RGB9_E5_FLOAT,

-      fetch_texel_1d_rgb9_e5,

-      fetch_texel_2d_rgb9_e5,

-      fetch_texel_3d_rgb9_e5,

-      store_texel_rgb9_e5

-   },

-   {

-      MESA_FORMAT_R11_G11_B10_FLOAT,

-      fetch_texel_1d_r11_g11_b10f,

-      fetch_texel_2d_r11_g11_b10f,

-      fetch_texel_3d_r11_g11_b10f,

-      store_texel_r11_g11_b10f

-   }

-};

-

-

-FetchTexelFuncF

-_mesa_get_texel_fetch_func(gl_format format, GLuint dims)

-{

-#ifdef DEBUG

-   /* check that the table entries are sorted by format name */

-   gl_format fmt;

-   for (fmt = 0; fmt < MESA_FORMAT_COUNT; fmt++) {

-      assert(texfetch_funcs[fmt].Name == fmt);

-   }

-#endif

-

-   assert(Elements(texfetch_funcs) == MESA_FORMAT_COUNT);

-   assert(format < MESA_FORMAT_COUNT);

-

-   switch (dims) {

-   case 1:

-      return texfetch_funcs[format].Fetch1D;

-   case 2:

-      return texfetch_funcs[format].Fetch2D;

-   case 3:

-      return texfetch_funcs[format].Fetch3D;

-   default:

-      assert(0 && "bad dims in _mesa_get_texel_fetch_func");

-      return NULL;

-   }

-}

-

-

-StoreTexelFunc

-_mesa_get_texel_store_func(gl_format format)

-{

-   assert(format < MESA_FORMAT_COUNT);

-   return texfetch_funcs[format].StoreTexel;

-}

-

-

-/**

- * Adaptor for fetching a GLchan texel from a float-valued texture.

- */

-static void

-fetch_texel_float_to_chan(const struct gl_texture_image *texImage,

-                          GLint i, GLint j, GLint k, GLchan *texelOut)

-{

-   GLfloat temp[4];

-   GLenum baseFormat = _mesa_get_format_base_format(texImage->TexFormat);

-

-   ASSERT(texImage->FetchTexelf);

-   texImage->FetchTexelf(texImage, i, j, k, temp);

-   if (baseFormat == GL_DEPTH_COMPONENT ||

-       baseFormat == GL_DEPTH_STENCIL_EXT) {

-      /* just one channel */

-      UNCLAMPED_FLOAT_TO_CHAN(texelOut[0], temp[0]);

-   }

-   else {

-      /* four channels */

-      UNCLAMPED_FLOAT_TO_CHAN(texelOut[0], temp[0]);

-      UNCLAMPED_FLOAT_TO_CHAN(texelOut[1], temp[1]);

-      UNCLAMPED_FLOAT_TO_CHAN(texelOut[2], temp[2]);

-      UNCLAMPED_FLOAT_TO_CHAN(texelOut[3], temp[3]);

-   }

-}

-

-

-#if 0

-/**

- * Adaptor for fetching a float texel from a GLchan-valued texture.

- */

-static void

-fetch_texel_chan_to_float(const struct gl_texture_image *texImage,

-                          GLint i, GLint j, GLint k, GLfloat *texelOut)

-{

-   GLchan temp[4];

-   GLenum baseFormat = _mesa_get_format_base_format(texImage->TexFormat);

-

-   ASSERT(texImage->FetchTexelc);

-   texImage->FetchTexelc(texImage, i, j, k, temp);

-   if (baseFormat == GL_DEPTH_COMPONENT ||

-       baseFormat == GL_DEPTH_STENCIL_EXT) {

-      /* just one channel */

-      texelOut[0] = CHAN_TO_FLOAT(temp[0]);

-   }

-   else {

-      /* four channels */

-      texelOut[0] = CHAN_TO_FLOAT(temp[0]);

-      texelOut[1] = CHAN_TO_FLOAT(temp[1]);

-      texelOut[2] = CHAN_TO_FLOAT(temp[2]);

-      texelOut[3] = CHAN_TO_FLOAT(temp[3]);

-   }

-}

-#endif

-

-

-/**

- * Initialize the texture image's FetchTexelc and FetchTexelf methods.

- */

-void

-_mesa_set_fetch_functions(struct gl_texture_image *texImage, GLuint dims)

-{

-   gl_format format = texImage->TexFormat;

-

-   ASSERT(dims == 1 || dims == 2 || dims == 3);

-

-   if (texImage->TexObject->Sampler.sRGBDecode == GL_SKIP_DECODE_EXT &&

-       _mesa_get_format_color_encoding(format) == GL_SRGB) {

-      format = _mesa_get_srgb_format_linear(format);

-   }

-

-   texImage->FetchTexelf = _mesa_get_texel_fetch_func(format, dims);

-

-   texImage->FetchTexelc = fetch_texel_float_to_chan;

-

-   ASSERT(texImage->FetchTexelc);

-   ASSERT(texImage->FetchTexelf);

-}

-

-void

-_mesa_update_fetch_functions(struct gl_texture_object *texObj)

-{

-   GLuint face, i;

-   GLuint dims;

-

-   dims = _mesa_get_texture_dimensions(texObj->Target);

-

-   for (face = 0; face < 6; face++) {

-      for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {

-         if (texObj->Image[face][i]) {

-	    _mesa_set_fetch_functions(texObj->Image[face][i], dims);

-         }

-      }

-   }

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.7
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (c) 2009  VMware, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * \file texfetch.c
+ *
+ * Texel fetch/store functions
+ *
+ * \author Gareth Hughes
+ */
+
+
+#include "colormac.h"
+#include "macros.h"
+#include "texcompress.h"
+#include "texcompress_fxt1.h"
+#include "texcompress_s3tc.h"
+#include "texcompress_rgtc.h"
+#include "texfetch.h"
+#include "teximage.h"
+#include "../../gallium/auxiliary/util/u_format_rgb9e5.h"
+#include "../../gallium/auxiliary/util/u_format_r11g11b10f.h"
+
+
+/**
+ * Convert an 8-bit sRGB value from non-linear space to a
+ * linear RGB value in [0, 1].
+ * Implemented with a 256-entry lookup table.
+ */
+static INLINE GLfloat
+nonlinear_to_linear(GLubyte cs8)
+{
+   static GLfloat table[256];
+   static GLboolean tableReady = GL_FALSE;
+   if (!tableReady) {
+      /* compute lookup table now */
+      GLuint i;
+      for (i = 0; i < 256; i++) {
+         const GLfloat cs = UBYTE_TO_FLOAT(i);
+         if (cs <= 0.04045) {
+            table[i] = cs / 12.92f;
+         }
+         else {
+            table[i] = (GLfloat) pow((cs + 0.055) / 1.055, 2.4);
+         }
+      }
+      tableReady = GL_TRUE;
+   }
+   return table[cs8];
+}
+
+
+
+/* Texel fetch routines for all supported formats
+ */
+#define DIM 1
+#include "texfetch_tmp.h"
+
+#define DIM 2
+#include "texfetch_tmp.h"
+
+#define DIM 3
+#include "texfetch_tmp.h"
+
+/**
+ * Null texel fetch function.
+ *
+ * Have to have this so the FetchTexel function pointer is never NULL.
+ */
+static void fetch_null_texelf( const struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   (void) texImage; (void) i; (void) j; (void) k;
+   texel[RCOMP] = 0.0;
+   texel[GCOMP] = 0.0;
+   texel[BCOMP] = 0.0;
+   texel[ACOMP] = 0.0;
+   _mesa_warning(NULL, "fetch_null_texelf() called!");
+}
+
+static void store_null_texel(struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, const void *texel)
+{
+   (void) texImage;
+   (void) i;
+   (void) j;
+   (void) k;
+   (void) texel;
+   /* no-op */
+}
+
+
+
+/**
+ * Table to map MESA_FORMAT_ to texel fetch/store funcs.
+ * XXX this is somewhat temporary.
+ */
+static struct {
+   gl_format Name;
+   FetchTexelFuncF Fetch1D;
+   FetchTexelFuncF Fetch2D;
+   FetchTexelFuncF Fetch3D;
+   StoreTexelFunc StoreTexel;
+}
+texfetch_funcs[MESA_FORMAT_COUNT] =
+{
+   {
+      MESA_FORMAT_NONE,
+      fetch_null_texelf,
+      fetch_null_texelf,
+      fetch_null_texelf,
+      store_null_texel
+   },
+
+   {
+      MESA_FORMAT_RGBA8888,
+      fetch_texel_1d_f_rgba8888,
+      fetch_texel_2d_f_rgba8888,
+      fetch_texel_3d_f_rgba8888,
+      store_texel_rgba8888
+   },
+   {
+      MESA_FORMAT_RGBA8888_REV,
+      fetch_texel_1d_f_rgba8888_rev,
+      fetch_texel_2d_f_rgba8888_rev,
+      fetch_texel_3d_f_rgba8888_rev,
+      store_texel_rgba8888_rev
+   },
+   {
+      MESA_FORMAT_ARGB8888,
+      fetch_texel_1d_f_argb8888,
+      fetch_texel_2d_f_argb8888,
+      fetch_texel_3d_f_argb8888,
+      store_texel_argb8888
+   },
+   {
+      MESA_FORMAT_ARGB8888_REV,
+      fetch_texel_1d_f_argb8888_rev,
+      fetch_texel_2d_f_argb8888_rev,
+      fetch_texel_3d_f_argb8888_rev,
+      store_texel_argb8888_rev
+   },
+   {
+      MESA_FORMAT_XRGB8888,
+      fetch_texel_1d_f_xrgb8888,
+      fetch_texel_2d_f_xrgb8888,
+      fetch_texel_3d_f_xrgb8888,
+      store_texel_xrgb8888
+   },
+   {
+      MESA_FORMAT_XRGB8888_REV,
+      fetch_texel_1d_f_xrgb8888_rev,
+      fetch_texel_2d_f_xrgb8888_rev,
+      fetch_texel_3d_f_xrgb8888_rev,
+      store_texel_xrgb8888_rev,
+   },
+   {
+      MESA_FORMAT_RGB888,
+      fetch_texel_1d_f_rgb888,
+      fetch_texel_2d_f_rgb888,
+      fetch_texel_3d_f_rgb888,
+      store_texel_rgb888
+   },
+   {
+      MESA_FORMAT_BGR888,
+      fetch_texel_1d_f_bgr888,
+      fetch_texel_2d_f_bgr888,
+      fetch_texel_3d_f_bgr888,
+      store_texel_bgr888
+   },
+   {
+      MESA_FORMAT_RGB565,
+      fetch_texel_1d_f_rgb565,
+      fetch_texel_2d_f_rgb565,
+      fetch_texel_3d_f_rgb565,
+      store_texel_rgb565
+   },
+   {
+      MESA_FORMAT_RGB565_REV,
+      fetch_texel_1d_f_rgb565_rev,
+      fetch_texel_2d_f_rgb565_rev,
+      fetch_texel_3d_f_rgb565_rev,
+      store_texel_rgb565_rev
+   },
+   {
+      MESA_FORMAT_ARGB4444,
+      fetch_texel_1d_f_argb4444,
+      fetch_texel_2d_f_argb4444,
+      fetch_texel_3d_f_argb4444,
+      store_texel_argb4444
+   },
+   {
+      MESA_FORMAT_ARGB4444_REV,
+      fetch_texel_1d_f_argb4444_rev,
+      fetch_texel_2d_f_argb4444_rev,
+      fetch_texel_3d_f_argb4444_rev,
+      store_texel_argb4444_rev
+   },
+   {
+      MESA_FORMAT_RGBA5551,
+      fetch_texel_1d_f_rgba5551,
+      fetch_texel_2d_f_rgba5551,
+      fetch_texel_3d_f_rgba5551,
+      store_texel_rgba5551
+   },
+   {
+      MESA_FORMAT_ARGB1555,
+      fetch_texel_1d_f_argb1555,
+      fetch_texel_2d_f_argb1555,
+      fetch_texel_3d_f_argb1555,
+      store_texel_argb1555
+   },
+   {
+      MESA_FORMAT_ARGB1555_REV,
+      fetch_texel_1d_f_argb1555_rev,
+      fetch_texel_2d_f_argb1555_rev,
+      fetch_texel_3d_f_argb1555_rev,
+      store_texel_argb1555_rev
+   },
+   {
+      MESA_FORMAT_AL44,
+      fetch_texel_1d_f_al44,
+      fetch_texel_2d_f_al44,
+      fetch_texel_3d_f_al44,
+      store_texel_al44
+   },
+   {
+      MESA_FORMAT_AL88,
+      fetch_texel_1d_f_al88,
+      fetch_texel_2d_f_al88,
+      fetch_texel_3d_f_al88,
+      store_texel_al88
+   },
+   {
+      MESA_FORMAT_AL88_REV,
+      fetch_texel_1d_f_al88_rev,
+      fetch_texel_2d_f_al88_rev,
+      fetch_texel_3d_f_al88_rev,
+      store_texel_al88_rev
+   },
+   {
+      MESA_FORMAT_AL1616,
+      fetch_texel_1d_f_al1616,
+      fetch_texel_2d_f_al1616,
+      fetch_texel_3d_f_al1616,
+      store_texel_al1616
+   },
+   {
+      MESA_FORMAT_AL1616_REV,
+      fetch_texel_1d_f_al1616_rev,
+      fetch_texel_2d_f_al1616_rev,
+      fetch_texel_3d_f_al1616_rev,
+      store_texel_al1616_rev
+   },
+   {
+      MESA_FORMAT_RGB332,
+      fetch_texel_1d_f_rgb332,
+      fetch_texel_2d_f_rgb332,
+      fetch_texel_3d_f_rgb332,
+      store_texel_rgb332
+   },
+   {
+      MESA_FORMAT_A8,
+      fetch_texel_1d_f_a8,
+      fetch_texel_2d_f_a8,
+      fetch_texel_3d_f_a8,
+      store_texel_a8
+   },
+   {
+      MESA_FORMAT_A16,
+      fetch_texel_1d_f_a16,
+      fetch_texel_2d_f_a16,
+      fetch_texel_3d_f_a16,
+      store_texel_a16
+   },
+   {
+      MESA_FORMAT_L8,
+      fetch_texel_1d_f_l8,
+      fetch_texel_2d_f_l8,
+      fetch_texel_3d_f_l8,
+      store_texel_l8
+   },
+   {
+      MESA_FORMAT_L16,
+      fetch_texel_1d_f_l16,
+      fetch_texel_2d_f_l16,
+      fetch_texel_3d_f_l16,
+      store_texel_l16
+   },
+   {
+      MESA_FORMAT_I8,
+      fetch_texel_1d_f_i8,
+      fetch_texel_2d_f_i8,
+      fetch_texel_3d_f_i8,
+      store_texel_i8
+   },
+   {
+      MESA_FORMAT_I16,
+      fetch_texel_1d_f_i16,
+      fetch_texel_2d_f_i16,
+      fetch_texel_3d_f_i16,
+      store_texel_i16
+   },
+   {
+      MESA_FORMAT_CI8,
+      fetch_texel_1d_f_ci8,
+      fetch_texel_2d_f_ci8,
+      fetch_texel_3d_f_ci8,
+      store_texel_ci8
+   },
+   {
+      MESA_FORMAT_YCBCR,
+      fetch_texel_1d_f_ycbcr,
+      fetch_texel_2d_f_ycbcr,
+      fetch_texel_3d_f_ycbcr,
+      store_texel_ycbcr
+   },
+   {
+      MESA_FORMAT_YCBCR_REV,
+      fetch_texel_1d_f_ycbcr_rev,
+      fetch_texel_2d_f_ycbcr_rev,
+      fetch_texel_3d_f_ycbcr_rev,
+      store_texel_ycbcr_rev
+   },
+   {
+      MESA_FORMAT_R8,
+      fetch_texel_1d_f_r8,
+      fetch_texel_2d_f_r8,
+      fetch_texel_3d_f_r8,
+      store_texel_r8,
+   },
+   {
+      MESA_FORMAT_RG88,
+      fetch_texel_1d_f_rg88,
+      fetch_texel_2d_f_rg88,
+      fetch_texel_3d_f_rg88,
+      store_texel_rg88,
+   },
+   {
+      MESA_FORMAT_RG88_REV,
+      fetch_texel_1d_f_rg88_rev,
+      fetch_texel_2d_f_rg88_rev,
+      fetch_texel_3d_f_rg88_rev,
+      store_texel_rg88_rev,
+   },
+   {
+      MESA_FORMAT_R16,
+      fetch_texel_1d_f_r16,
+      fetch_texel_2d_f_r16,
+      fetch_texel_3d_f_r16,
+      store_texel_r16,
+   },
+   {
+      MESA_FORMAT_RG1616,
+      fetch_texel_1d_f_rg1616,
+      fetch_texel_2d_f_rg1616,
+      fetch_texel_3d_f_rg1616,
+      store_texel_rg1616,
+   },
+   {
+      MESA_FORMAT_RG1616_REV,
+      fetch_texel_1d_f_rg1616_rev,
+      fetch_texel_2d_f_rg1616_rev,
+      fetch_texel_3d_f_rg1616_rev,
+      store_texel_rg1616_rev,
+   },
+   {
+      MESA_FORMAT_ARGB2101010,
+      fetch_texel_1d_f_argb2101010,
+      fetch_texel_2d_f_argb2101010,
+      fetch_texel_3d_f_argb2101010,
+      store_texel_argb2101010
+   },
+   {
+      MESA_FORMAT_Z24_S8,
+      fetch_texel_1d_f_z24_s8,
+      fetch_texel_2d_f_z24_s8,
+      fetch_texel_3d_f_z24_s8,
+      store_texel_z24_s8
+   },
+   {
+      MESA_FORMAT_S8_Z24,
+      fetch_texel_1d_f_s8_z24,
+      fetch_texel_2d_f_s8_z24,
+      fetch_texel_3d_f_s8_z24,
+      store_texel_s8_z24
+   },
+   {
+      MESA_FORMAT_Z16,
+      fetch_texel_1d_f_z16,
+      fetch_texel_2d_f_z16,
+      fetch_texel_3d_f_z16,
+      store_texel_z16
+   },
+   {
+      MESA_FORMAT_X8_Z24,
+      fetch_texel_1d_f_s8_z24,
+      fetch_texel_2d_f_s8_z24,
+      fetch_texel_3d_f_s8_z24,
+      store_texel_s8_z24
+   },
+   {
+      MESA_FORMAT_Z24_X8,
+      fetch_texel_1d_f_z24_s8,
+      fetch_texel_2d_f_z24_s8,
+      fetch_texel_3d_f_z24_s8,
+      store_texel_z24_s8
+   },
+   {
+      MESA_FORMAT_Z32,
+      fetch_texel_1d_f_z32,
+      fetch_texel_2d_f_z32,
+      fetch_texel_3d_f_z32,
+      store_texel_z32
+   },
+   {
+      MESA_FORMAT_S8,
+      NULL,
+      NULL,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_SRGB8,
+      fetch_texel_1d_srgb8,
+      fetch_texel_2d_srgb8,
+      fetch_texel_3d_srgb8,
+      store_texel_srgb8
+   },
+   {
+      MESA_FORMAT_SRGBA8,
+      fetch_texel_1d_srgba8,
+      fetch_texel_2d_srgba8,
+      fetch_texel_3d_srgba8,
+      store_texel_srgba8
+   },
+   {
+      MESA_FORMAT_SARGB8,
+      fetch_texel_1d_sargb8,
+      fetch_texel_2d_sargb8,
+      fetch_texel_3d_sargb8,
+      store_texel_sargb8
+   },
+   {
+      MESA_FORMAT_SL8,
+      fetch_texel_1d_sl8,
+      fetch_texel_2d_sl8,
+      fetch_texel_3d_sl8,
+      store_texel_sl8
+   },
+   {
+      MESA_FORMAT_SLA8,
+      fetch_texel_1d_sla8,
+      fetch_texel_2d_sla8,
+      fetch_texel_3d_sla8,
+      store_texel_sla8
+   },
+   {
+      MESA_FORMAT_SRGB_DXT1,
+      NULL,
+      _mesa_fetch_texel_2d_f_srgb_dxt1,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_SRGBA_DXT1,
+      NULL,
+      _mesa_fetch_texel_2d_f_srgba_dxt1,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_SRGBA_DXT3,
+      NULL,
+      _mesa_fetch_texel_2d_f_srgba_dxt3,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_SRGBA_DXT5,
+      NULL,
+      _mesa_fetch_texel_2d_f_srgba_dxt5,
+      NULL,
+      NULL
+   },
+
+   {
+      MESA_FORMAT_RGB_FXT1,
+      NULL,
+      _mesa_fetch_texel_2d_f_rgb_fxt1,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_RGBA_FXT1,
+      NULL,
+      _mesa_fetch_texel_2d_f_rgba_fxt1,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_RGB_DXT1,
+      NULL,
+      _mesa_fetch_texel_2d_f_rgb_dxt1,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_RGBA_DXT1,
+      NULL,
+      _mesa_fetch_texel_2d_f_rgba_dxt1,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_RGBA_DXT3,
+      NULL,
+      _mesa_fetch_texel_2d_f_rgba_dxt3,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_RGBA_DXT5,
+      NULL,
+      _mesa_fetch_texel_2d_f_rgba_dxt5,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_RGBA_FLOAT32,
+      fetch_texel_1d_f_rgba_f32,
+      fetch_texel_2d_f_rgba_f32,
+      fetch_texel_3d_f_rgba_f32,
+      store_texel_rgba_f32
+   },
+   {
+      MESA_FORMAT_RGBA_FLOAT16,
+      fetch_texel_1d_f_rgba_f16,
+      fetch_texel_2d_f_rgba_f16,
+      fetch_texel_3d_f_rgba_f16,
+      store_texel_rgba_f16
+   },
+   {
+      MESA_FORMAT_RGB_FLOAT32,
+      fetch_texel_1d_f_rgb_f32,
+      fetch_texel_2d_f_rgb_f32,
+      fetch_texel_3d_f_rgb_f32,
+      store_texel_rgb_f32
+   },
+   {
+      MESA_FORMAT_RGB_FLOAT16,
+      fetch_texel_1d_f_rgb_f16,
+      fetch_texel_2d_f_rgb_f16,
+      fetch_texel_3d_f_rgb_f16,
+      store_texel_rgb_f16
+   },
+   {
+      MESA_FORMAT_ALPHA_FLOAT32,
+      fetch_texel_1d_f_alpha_f32,
+      fetch_texel_2d_f_alpha_f32,
+      fetch_texel_3d_f_alpha_f32,
+      store_texel_alpha_f32
+   },
+   {
+      MESA_FORMAT_ALPHA_FLOAT16,
+      fetch_texel_1d_f_alpha_f16,
+      fetch_texel_2d_f_alpha_f16,
+      fetch_texel_3d_f_alpha_f16,
+      store_texel_alpha_f16
+   },
+   {
+      MESA_FORMAT_LUMINANCE_FLOAT32,
+      fetch_texel_1d_f_luminance_f32,
+      fetch_texel_2d_f_luminance_f32,
+      fetch_texel_3d_f_luminance_f32,
+      store_texel_luminance_f32
+   },
+   {
+      MESA_FORMAT_LUMINANCE_FLOAT16,
+      fetch_texel_1d_f_luminance_f16,
+      fetch_texel_2d_f_luminance_f16,
+      fetch_texel_3d_f_luminance_f16,
+      store_texel_luminance_f16
+   },
+   {
+      MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32,
+      fetch_texel_1d_f_luminance_alpha_f32,
+      fetch_texel_2d_f_luminance_alpha_f32,
+      fetch_texel_3d_f_luminance_alpha_f32,
+      store_texel_luminance_alpha_f32
+   },
+   {
+      MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16,
+      fetch_texel_1d_f_luminance_alpha_f16,
+      fetch_texel_2d_f_luminance_alpha_f16,
+      fetch_texel_3d_f_luminance_alpha_f16,
+      store_texel_luminance_alpha_f16
+   },
+   {
+      MESA_FORMAT_INTENSITY_FLOAT32,
+      fetch_texel_1d_f_intensity_f32,
+      fetch_texel_2d_f_intensity_f32,
+      fetch_texel_3d_f_intensity_f32,
+      store_texel_intensity_f32
+   },
+   {
+      MESA_FORMAT_INTENSITY_FLOAT16,
+      fetch_texel_1d_f_intensity_f16,
+      fetch_texel_2d_f_intensity_f16,
+      fetch_texel_3d_f_intensity_f16,
+      store_texel_intensity_f16
+   },
+   {
+      MESA_FORMAT_R_FLOAT32,
+      fetch_texel_1d_f_r_f32,
+      fetch_texel_2d_f_r_f32,
+      fetch_texel_3d_f_r_f32,
+      store_texel_r_f32
+   },
+   {
+      MESA_FORMAT_R_FLOAT16,
+      fetch_texel_1d_f_r_f16,
+      fetch_texel_2d_f_r_f16,
+      fetch_texel_3d_f_r_f16,
+      store_texel_r_f16
+   },
+   {
+      MESA_FORMAT_RG_FLOAT32,
+      fetch_texel_1d_f_rg_f32,
+      fetch_texel_2d_f_rg_f32,
+      fetch_texel_3d_f_rg_f32,
+      store_texel_rg_f32
+   },
+   {
+      MESA_FORMAT_RG_FLOAT16,
+      fetch_texel_1d_f_rg_f16,
+      fetch_texel_2d_f_rg_f16,
+      fetch_texel_3d_f_rg_f16,
+      store_texel_rg_f16
+   },
+
+   /* non-normalized, signed int */
+   {
+      MESA_FORMAT_RGBA_INT8,
+      fetch_texel_1d_rgba_int8,
+      fetch_texel_2d_rgba_int8,
+      fetch_texel_3d_rgba_int8,
+      store_texel_rgba_int8
+   },
+   {
+      MESA_FORMAT_RGBA_INT16,
+      fetch_texel_1d_rgba_int16,
+      fetch_texel_2d_rgba_int16,
+      fetch_texel_3d_rgba_int16,
+      store_texel_rgba_int16
+   },
+   {
+      MESA_FORMAT_RGBA_INT32,
+      fetch_texel_1d_rgba_int32,
+      fetch_texel_2d_rgba_int32,
+      fetch_texel_3d_rgba_int32,
+      store_texel_rgba_int32
+   },
+
+   /* non-normalized, unsigned int */
+   {
+      MESA_FORMAT_RGBA_UINT8,
+      fetch_texel_1d_rgba_uint8,
+      fetch_texel_2d_rgba_uint8,
+      fetch_texel_3d_rgba_uint8,
+      store_texel_rgba_uint8
+   },
+   {
+      MESA_FORMAT_RGBA_UINT16,
+      fetch_texel_1d_rgba_uint16,
+      fetch_texel_2d_rgba_uint16,
+      fetch_texel_3d_rgba_uint16,
+      store_texel_rgba_uint16
+   },
+   {
+      MESA_FORMAT_RGBA_UINT32,
+      fetch_texel_1d_rgba_uint32,
+      fetch_texel_2d_rgba_uint32,
+      fetch_texel_3d_rgba_uint32,
+      store_texel_rgba_uint32
+   },
+
+   /* dudv */
+   {
+      MESA_FORMAT_DUDV8,
+      fetch_texel_1d_dudv8,
+      fetch_texel_2d_dudv8,
+      fetch_texel_3d_dudv8,
+      NULL
+   },
+
+   /* signed, normalized */
+   {
+      MESA_FORMAT_SIGNED_R8,
+      fetch_texel_1d_signed_r8,
+      fetch_texel_2d_signed_r8,
+      fetch_texel_3d_signed_r8,
+      store_texel_signed_r8
+   },
+   {
+      MESA_FORMAT_SIGNED_RG88_REV,
+      fetch_texel_1d_signed_rg88_rev,
+      fetch_texel_2d_signed_rg88_rev,
+      fetch_texel_3d_signed_rg88_rev,
+      store_texel_signed_rg88_rev
+   },
+   {
+      MESA_FORMAT_SIGNED_RGBX8888,
+      fetch_texel_1d_signed_rgbx8888,
+      fetch_texel_2d_signed_rgbx8888,
+      fetch_texel_3d_signed_rgbx8888,
+      store_texel_signed_rgbx8888
+   },
+   {
+      MESA_FORMAT_SIGNED_RGBA8888,
+      fetch_texel_1d_signed_rgba8888,
+      fetch_texel_2d_signed_rgba8888,
+      fetch_texel_3d_signed_rgba8888,
+      store_texel_signed_rgba8888
+   },
+   {
+      MESA_FORMAT_SIGNED_RGBA8888_REV,
+      fetch_texel_1d_signed_rgba8888_rev,
+      fetch_texel_2d_signed_rgba8888_rev,
+      fetch_texel_3d_signed_rgba8888_rev,
+      store_texel_signed_rgba8888_rev
+   },
+   {
+      MESA_FORMAT_SIGNED_R16,
+      fetch_texel_1d_signed_r16,
+      fetch_texel_2d_signed_r16,
+      fetch_texel_3d_signed_r16,
+      store_texel_signed_r16
+   },
+   {
+      MESA_FORMAT_SIGNED_GR1616,
+      fetch_texel_1d_signed_rg1616,
+      fetch_texel_2d_signed_rg1616,
+      fetch_texel_3d_signed_rg1616,
+      store_texel_signed_rg1616
+   },
+   {
+      MESA_FORMAT_SIGNED_RGB_16,
+      fetch_texel_1d_signed_rgb_16,
+      fetch_texel_2d_signed_rgb_16,
+      fetch_texel_3d_signed_rgb_16,
+      store_texel_signed_rgb_16
+   },
+   {
+      MESA_FORMAT_SIGNED_RGBA_16,
+      fetch_texel_1d_signed_rgba_16,
+      fetch_texel_2d_signed_rgba_16,
+      fetch_texel_3d_signed_rgba_16,
+      store_texel_signed_rgba_16
+   },
+   {
+      MESA_FORMAT_RGBA_16,
+      fetch_texel_1d_rgba_16,
+      fetch_texel_2d_rgba_16,
+      fetch_texel_3d_rgba_16,
+      store_texel_rgba_16
+   },
+   {
+      MESA_FORMAT_RED_RGTC1,
+      NULL,
+      _mesa_fetch_texel_2d_f_red_rgtc1,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_SIGNED_RED_RGTC1,
+      NULL,
+      _mesa_fetch_texel_2d_f_signed_red_rgtc1,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_RG_RGTC2,
+      NULL,
+      _mesa_fetch_texel_2d_f_rg_rgtc2,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_SIGNED_RG_RGTC2,
+      NULL,
+      _mesa_fetch_texel_2d_f_signed_rg_rgtc2,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_L_LATC1,
+      NULL,
+      _mesa_fetch_texel_2d_f_l_latc1,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_SIGNED_L_LATC1,
+      NULL,
+      _mesa_fetch_texel_2d_f_signed_l_latc1,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_LA_LATC2,
+      NULL,
+      _mesa_fetch_texel_2d_f_la_latc2,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_SIGNED_LA_LATC2,
+      NULL,
+      _mesa_fetch_texel_2d_f_signed_la_latc2,
+      NULL,
+      NULL
+   },
+   {
+      MESA_FORMAT_SIGNED_A8,
+      fetch_texel_1d_signed_a8,
+      fetch_texel_2d_signed_a8,
+      fetch_texel_3d_signed_a8,
+      store_texel_signed_a8
+   },
+   {
+      MESA_FORMAT_SIGNED_L8,
+      fetch_texel_1d_signed_l8,
+      fetch_texel_2d_signed_l8,
+      fetch_texel_3d_signed_l8,
+      store_texel_signed_l8
+   },
+   {
+      MESA_FORMAT_SIGNED_AL88,
+      fetch_texel_1d_signed_al88,
+      fetch_texel_2d_signed_al88,
+      fetch_texel_3d_signed_al88,
+      store_texel_signed_al88
+   },
+   {
+      MESA_FORMAT_SIGNED_I8,
+      fetch_texel_1d_signed_i8,
+      fetch_texel_2d_signed_i8,
+      fetch_texel_3d_signed_i8,
+      store_texel_signed_i8
+   },
+   {
+      MESA_FORMAT_SIGNED_A16,
+      fetch_texel_1d_signed_a16,
+      fetch_texel_2d_signed_a16,
+      fetch_texel_3d_signed_a16,
+      store_texel_signed_a16
+   },
+   {
+      MESA_FORMAT_SIGNED_L16,
+      fetch_texel_1d_signed_l16,
+      fetch_texel_2d_signed_l16,
+      fetch_texel_3d_signed_l16,
+      store_texel_signed_l16
+   },
+   {
+      MESA_FORMAT_SIGNED_AL1616,
+      fetch_texel_1d_signed_al1616,
+      fetch_texel_2d_signed_al1616,
+      fetch_texel_3d_signed_al1616,
+      store_texel_signed_al1616
+   },
+   {
+      MESA_FORMAT_SIGNED_I16,
+      fetch_texel_1d_signed_i16,
+      fetch_texel_2d_signed_i16,
+      fetch_texel_3d_signed_i16,
+      store_texel_signed_i16
+   },
+   {
+      MESA_FORMAT_RGB9_E5_FLOAT,
+      fetch_texel_1d_rgb9_e5,
+      fetch_texel_2d_rgb9_e5,
+      fetch_texel_3d_rgb9_e5,
+      store_texel_rgb9_e5
+   },
+   {
+      MESA_FORMAT_R11_G11_B10_FLOAT,
+      fetch_texel_1d_r11_g11_b10f,
+      fetch_texel_2d_r11_g11_b10f,
+      fetch_texel_3d_r11_g11_b10f,
+      store_texel_r11_g11_b10f
+   },
+   {
+      MESA_FORMAT_Z32_FLOAT,
+      fetch_texel_1d_f_r_f32, /* Reuse the R32F functions. */
+      fetch_texel_2d_f_r_f32,
+      fetch_texel_3d_f_r_f32,
+      store_texel_r_f32
+   },
+   {
+      MESA_FORMAT_Z32_FLOAT_X24S8,
+      fetch_texel_1d_z32f_x24s8,
+      fetch_texel_2d_z32f_x24s8,
+      fetch_texel_3d_z32f_x24s8,
+      store_texel_z32f_x24s8
+   }
+};
+
+
+FetchTexelFuncF
+_mesa_get_texel_fetch_func(gl_format format, GLuint dims)
+{
+#ifdef DEBUG
+   /* check that the table entries are sorted by format name */
+   gl_format fmt;
+   for (fmt = 0; fmt < MESA_FORMAT_COUNT; fmt++) {
+      assert(texfetch_funcs[fmt].Name == fmt);
+   }
+#endif
+
+   assert(Elements(texfetch_funcs) == MESA_FORMAT_COUNT);
+   assert(format < MESA_FORMAT_COUNT);
+
+   switch (dims) {
+   case 1:
+      return texfetch_funcs[format].Fetch1D;
+   case 2:
+      return texfetch_funcs[format].Fetch2D;
+   case 3:
+      return texfetch_funcs[format].Fetch3D;
+   default:
+      assert(0 && "bad dims in _mesa_get_texel_fetch_func");
+      return NULL;
+   }
+}
+
+
+StoreTexelFunc
+_mesa_get_texel_store_func(gl_format format)
+{
+   assert(format < MESA_FORMAT_COUNT);
+   return texfetch_funcs[format].StoreTexel;
+}
+
+
+/**
+ * Adaptor for fetching a GLchan texel from a float-valued texture.
+ */
+static void
+fetch_texel_float_to_chan(const struct gl_texture_image *texImage,
+                          GLint i, GLint j, GLint k, GLchan *texelOut)
+{
+   GLfloat temp[4];
+   GLenum baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
+
+   ASSERT(texImage->FetchTexelf);
+   texImage->FetchTexelf(texImage, i, j, k, temp);
+   if (baseFormat == GL_DEPTH_COMPONENT ||
+       baseFormat == GL_DEPTH_STENCIL_EXT) {
+      /* just one channel */
+      UNCLAMPED_FLOAT_TO_CHAN(texelOut[0], temp[0]);
+   }
+   else {
+      /* four channels */
+      UNCLAMPED_FLOAT_TO_CHAN(texelOut[0], temp[0]);
+      UNCLAMPED_FLOAT_TO_CHAN(texelOut[1], temp[1]);
+      UNCLAMPED_FLOAT_TO_CHAN(texelOut[2], temp[2]);
+      UNCLAMPED_FLOAT_TO_CHAN(texelOut[3], temp[3]);
+   }
+}
+
+
+#if 0
+/**
+ * Adaptor for fetching a float texel from a GLchan-valued texture.
+ */
+static void
+fetch_texel_chan_to_float(const struct gl_texture_image *texImage,
+                          GLint i, GLint j, GLint k, GLfloat *texelOut)
+{
+   GLchan temp[4];
+   GLenum baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
+
+   ASSERT(texImage->FetchTexelc);
+   texImage->FetchTexelc(texImage, i, j, k, temp);
+   if (baseFormat == GL_DEPTH_COMPONENT ||
+       baseFormat == GL_DEPTH_STENCIL_EXT) {
+      /* just one channel */
+      texelOut[0] = CHAN_TO_FLOAT(temp[0]);
+   }
+   else {
+      /* four channels */
+      texelOut[0] = CHAN_TO_FLOAT(temp[0]);
+      texelOut[1] = CHAN_TO_FLOAT(temp[1]);
+      texelOut[2] = CHAN_TO_FLOAT(temp[2]);
+      texelOut[3] = CHAN_TO_FLOAT(temp[3]);
+   }
+}
+#endif
+
+
+/**
+ * Initialize the texture image's FetchTexelc and FetchTexelf methods.
+ */
+void
+_mesa_set_fetch_functions(struct gl_texture_image *texImage, GLuint dims)
+{
+   gl_format format = texImage->TexFormat;
+
+   ASSERT(dims == 1 || dims == 2 || dims == 3);
+
+   if (texImage->TexObject->Sampler.sRGBDecode == GL_SKIP_DECODE_EXT &&
+       _mesa_get_format_color_encoding(format) == GL_SRGB) {
+      format = _mesa_get_srgb_format_linear(format);
+   }
+
+   texImage->FetchTexelf = _mesa_get_texel_fetch_func(format, dims);
+
+   texImage->FetchTexelc = fetch_texel_float_to_chan;
+
+   ASSERT(texImage->FetchTexelc);
+   ASSERT(texImage->FetchTexelf);
+}
+
+void
+_mesa_update_fetch_functions(struct gl_texture_object *texObj)
+{
+   GLuint face, i;
+   GLuint dims;
+
+   dims = _mesa_get_texture_dimensions(texObj->Target);
+
+   for (face = 0; face < 6; face++) {
+      for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
+         if (texObj->Image[face][i]) {
+	    _mesa_set_fetch_functions(texObj->Image[face][i], dims);
+         }
+      }
+   }
+}
diff --git a/mesalib/src/mesa/main/texfetch_tmp.h b/mesalib/src/mesa/main/texfetch_tmp.h
index 278becc11..3b1eedf39 100644
--- a/mesalib/src/mesa/main/texfetch_tmp.h
+++ b/mesalib/src/mesa/main/texfetch_tmp.h
@@ -1,2379 +1,2402 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.7

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- * Copyright (c) 2008-2009  VMware, Inc.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-/**

- * \file texfetch_tmp.h

- * Texel fetch functions template.

- * 

- * This template file is used by texfetch.c to generate texel fetch functions

- * for 1-D, 2-D and 3-D texture images. 

- *

- * It should be expanded by defining \p DIM as the number texture dimensions

- * (1, 2 or 3).  According to the value of \p DIM a series of macros is defined

- * for the texel lookup in the gl_texture_image::Data.

- * 

- * \author Gareth Hughes

- * \author Brian Paul

- */

-

-

-#if DIM == 1

-

-#define TEXEL_ADDR( type, image, i, j, k, size ) \

-	((void) (j), (void) (k), ((type *)(image)->Data + (i) * (size)))

-

-#define FETCH(x) fetch_texel_1d_##x

-

-#elif DIM == 2

-

-#define TEXEL_ADDR( type, image, i, j, k, size )			\

-	((void) (k),							\

-	 ((type *)(image)->Data + ((image)->RowStride * (j) + (i)) * (size)))

-

-#define FETCH(x) fetch_texel_2d_##x

-

-#elif DIM == 3

-

-#define TEXEL_ADDR( type, image, i, j, k, size )			\

-	((type *)(image)->Data + ((image)->ImageOffsets[k]		\

-             + (image)->RowStride * (j) + (i)) * (size))

-

-#define FETCH(x) fetch_texel_3d_##x

-

-#else

-#error	illegal number of texture dimensions

-#endif

-

-

-/* MESA_FORMAT_Z32 ***********************************************************/

-

-/* Fetch depth texel from 1D, 2D or 3D 32-bit depth texture,

- * returning 1 GLfloat.

- * Note: no GLchan version of this function.

- */

-static void FETCH(f_z32)( const struct gl_texture_image *texImage,

-                          GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[0] = src[0] * (1.0F / 0xffffffff);

-}

-

-#if DIM == 3

-static void store_texel_z32(struct gl_texture_image *texImage,

-                            GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLuint *depth = (const GLuint *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   dst[0] = *depth;

-}

-#endif

-

-

-/* MESA_FORMAT_Z16 ***********************************************************/

-

-/* Fetch depth texel from 1D, 2D or 3D 16-bit depth texture,

- * returning 1 GLfloat.

- * Note: no GLchan version of this function.

- */

-static void FETCH(f_z16)(const struct gl_texture_image *texImage,

-                         GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   texel[0] = src[0] * (1.0F / 65535.0F);

-}

-

-#if DIM == 3

-static void store_texel_z16(struct gl_texture_image *texImage,

-                            GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLushort *depth = (const GLushort *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   dst[0] = *depth;

-}

-#endif

-

-

-/* MESA_FORMAT_RGBA_F32 ******************************************************/

-

-/* Fetch texel from 1D, 2D or 3D RGBA_FLOAT32 texture, returning 4 GLfloats.

- */

-static void FETCH(f_rgba_f32)( const struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 4);

-   texel[RCOMP] = src[0];

-   texel[GCOMP] = src[1];

-   texel[BCOMP] = src[2];

-   texel[ACOMP] = src[3];

-}

-

-#if DIM == 3

-static void store_texel_rgba_f32(struct gl_texture_image *texImage,

-                                 GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *depth = (const GLfloat *) texel;

-   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 4);

-   dst[0] = depth[RCOMP];

-   dst[1] = depth[GCOMP];

-   dst[2] = depth[BCOMP];

-   dst[3] = depth[ACOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_RGBA_F16 ******************************************************/

-

-/* Fetch texel from 1D, 2D or 3D RGBA_FLOAT16 texture,

- * returning 4 GLfloats.

- */

-static void FETCH(f_rgba_f16)( const struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 4);

-   texel[RCOMP] = _mesa_half_to_float(src[0]);

-   texel[GCOMP] = _mesa_half_to_float(src[1]);

-   texel[BCOMP] = _mesa_half_to_float(src[2]);

-   texel[ACOMP] = _mesa_half_to_float(src[3]);

-}

-

-#if DIM == 3

-static void store_texel_rgba_f16(struct gl_texture_image *texImage,

-                                 GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *src = (const GLfloat *) texel;

-   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 4);

-   dst[0] = _mesa_float_to_half(src[RCOMP]);

-   dst[1] = _mesa_float_to_half(src[GCOMP]);

-   dst[2] = _mesa_float_to_half(src[BCOMP]);

-   dst[3] = _mesa_float_to_half(src[ACOMP]);

-}

-#endif

-

-/* MESA_FORMAT_RGB_F32 *******************************************************/

-

-/* Fetch texel from 1D, 2D or 3D RGB_FLOAT32 texture,

- * returning 4 GLfloats.

- */

-static void FETCH(f_rgb_f32)( const struct gl_texture_image *texImage,

-                              GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 3);

-   texel[RCOMP] = src[0];

-   texel[GCOMP] = src[1];

-   texel[BCOMP] = src[2];

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_rgb_f32(struct gl_texture_image *texImage,

-                                 GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *src = (const GLfloat *) texel;

-   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 3);

-   dst[0] = src[RCOMP];

-   dst[1] = src[GCOMP];

-   dst[2] = src[BCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_RGB_F16 *******************************************************/

-

-/* Fetch texel from 1D, 2D or 3D RGB_FLOAT16 texture,

- * returning 4 GLfloats.

- */

-static void FETCH(f_rgb_f16)( const struct gl_texture_image *texImage,

-                              GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 3);

-   texel[RCOMP] = _mesa_half_to_float(src[0]);

-   texel[GCOMP] = _mesa_half_to_float(src[1]);

-   texel[BCOMP] = _mesa_half_to_float(src[2]);

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_rgb_f16(struct gl_texture_image *texImage,

-                                GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *src = (const GLfloat *) texel;

-   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 3);

-   dst[0] = _mesa_float_to_half(src[RCOMP]);

-   dst[1] = _mesa_float_to_half(src[GCOMP]);

-   dst[2] = _mesa_float_to_half(src[BCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_ALPHA_F32 *****************************************************/

-

-/* Fetch texel from 1D, 2D or 3D ALPHA_FLOAT32 texture,

- * returning 4 GLfloats.

- */

-static void FETCH(f_alpha_f32)( const struct gl_texture_image *texImage,

-                              GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = 0.0F;

-   texel[ACOMP] = src[0];

-}

-

-#if DIM == 3

-static void store_texel_alpha_f32(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *rgba = (const GLfloat *) texel;

-   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);

-   dst[0] = rgba[ACOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_ALPHA_F32 *****************************************************/

-

-/* Fetch texel from 1D, 2D or 3D ALPHA_FLOAT16 texture,

- * returning 4 GLfloats.

- */

-static void FETCH(f_alpha_f16)( const struct gl_texture_image *texImage,

-                              GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = 0.0F;

-   texel[ACOMP] = _mesa_half_to_float(src[0]);

-}

-

-#if DIM == 3

-static void store_texel_alpha_f16(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *rgba = (const GLfloat *) texel;

-   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);

-   dst[0] = _mesa_float_to_half(rgba[ACOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_LUMINANCE_F32 *************************************************/

-

-/* Fetch texel from 1D, 2D or 3D LUMINANCE_FLOAT32 texture,

- * returning 4 GLfloats.

- */

-static void FETCH(f_luminance_f32)( const struct gl_texture_image *texImage,

-                                    GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = src[0];

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_luminance_f32(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *rgba = (const GLfloat *) texel;

-   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);

-   dst[0] = rgba[RCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_LUMINANCE_F16 *************************************************/

-

-/* Fetch texel from 1D, 2D or 3D LUMINANCE_FLOAT16 texture,

- * returning 4 GLfloats.

- */

-static void FETCH(f_luminance_f16)( const struct gl_texture_image *texImage,

-                                    GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = _mesa_half_to_float(src[0]);

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_luminance_f16(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *rgba = (const GLfloat *) texel;

-   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);

-   dst[0] = _mesa_float_to_half(rgba[RCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_LUMINANCE_ALPHA_F32 *******************************************/

-

-/* Fetch texel from 1D, 2D or 3D LUMINANCE_ALPHA_FLOAT32 texture,

- * returning 4 GLfloats.

- */

-static void FETCH(f_luminance_alpha_f32)( const struct gl_texture_image *texImage,

-                                    GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = src[0];

-   texel[ACOMP] = src[1];

-}

-

-#if DIM == 3

-static void store_texel_luminance_alpha_f32(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *rgba = (const GLfloat *) texel;

-   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);

-   dst[0] = rgba[RCOMP];

-   dst[1] = rgba[ACOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_LUMINANCE_ALPHA_F16 *******************************************/

-

-/* Fetch texel from 1D, 2D or 3D LUMINANCE_ALPHA_FLOAT16 texture,

- * returning 4 GLfloats.

- */

-static void FETCH(f_luminance_alpha_f16)( const struct gl_texture_image *texImage,

-                                    GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = _mesa_half_to_float(src[0]);

-   texel[ACOMP] = _mesa_half_to_float(src[1]);

-}

-

-#if DIM == 3

-static void store_texel_luminance_alpha_f16(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *rgba = (const GLfloat *) texel;

-   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);

-   dst[0] = _mesa_float_to_half(rgba[RCOMP]);

-   dst[1] = _mesa_float_to_half(rgba[ACOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_INTENSITY_F32 *************************************************/

-

-/* Fetch texel from 1D, 2D or 3D INTENSITY_FLOAT32 texture,

- * returning 4 GLfloats.

- */

-static void FETCH(f_intensity_f32)( const struct gl_texture_image *texImage,

-                                    GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] =

-   texel[ACOMP] = src[0];

-}

-

-#if DIM == 3

-static void store_texel_intensity_f32(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *rgba = (const GLfloat *) texel;

-   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);

-   dst[0] = rgba[RCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_INTENSITY_F16 *************************************************/

-

-/* Fetch texel from 1D, 2D or 3D INTENSITY_FLOAT16 texture,

- * returning 4 GLfloats.

- */

-static void FETCH(f_intensity_f16)( const struct gl_texture_image *texImage,

-                                    GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] =

-   texel[ACOMP] = _mesa_half_to_float(src[0]);

-}

-

-#if DIM == 3

-static void store_texel_intensity_f16(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *rgba = (const GLfloat *) texel;

-   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);

-   dst[0] = _mesa_float_to_half(rgba[RCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_R_FLOAT32 *****************************************************/

-

-/* Fetch texel from 1D, 2D or 3D R_FLOAT32 texture,

- * returning 4 GLfloats.

- */

-static void FETCH(f_r_f32)( const struct gl_texture_image *texImage,

-                            GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);

-   texel[RCOMP] = src[0];

-   texel[GCOMP] = 0.0F;

-   texel[BCOMP] = 0.0F;

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_r_f32(struct gl_texture_image *texImage,

-                              GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *rgba = (const GLfloat *) texel;

-   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);

-   dst[0] = rgba[RCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_R_FLOAT16 *****************************************************/

-

-/* Fetch texel from 1D, 2D or 3D R_FLOAT16 texture,

- * returning 4 GLfloats.

- */

-static void FETCH(f_r_f16)( const struct gl_texture_image *texImage,

-                            GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);

-   texel[RCOMP] = _mesa_half_to_float(src[0]);

-   texel[GCOMP] = 0.0F;

-   texel[BCOMP] = 0.0F;

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_r_f16(struct gl_texture_image *texImage,

-                              GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *rgba = (const GLfloat *) texel;

-   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);

-   dst[0] = _mesa_float_to_half(rgba[RCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_RG_FLOAT32 ****************************************************/

-

-/* Fetch texel from 1D, 2D or 3D RG_FLOAT32 texture,

- * returning 4 GLfloats.

- */

-static void FETCH(f_rg_f32)( const struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);

-   texel[RCOMP] = src[0];

-   texel[GCOMP] = src[1];

-   texel[BCOMP] = 0.0F;

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_rg_f32(struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *rgba = (const GLfloat *) texel;

-   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);

-   dst[0] = rgba[RCOMP];

-   dst[1] = rgba[GCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_RG_FLOAT16 ****************************************************/

-

-/* Fetch texel from 1D, 2D or 3D RG_FLOAT16 texture,

- * returning 4 GLfloats.

- */

-static void FETCH(f_rg_f16)( const struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);

-   texel[RCOMP] = _mesa_half_to_float(src[0]);

-   texel[GCOMP] = _mesa_half_to_float(src[1]);

-   texel[BCOMP] = 0.0F;

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_rg_f16(struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *rgba = (const GLfloat *) texel;

-   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);

-   dst[0] = _mesa_float_to_half(rgba[RCOMP]);

-   dst[1] = _mesa_float_to_half(rgba[GCOMP]);

-}

-#endif

-

-

-/*

- * Begin Hardware formats

- */

-

-/* MESA_FORMAT_RGBA8888 ******************************************************/

-

-/* Fetch texel from 1D, 2D or 3D rgba8888 texture, return 4 GLfloats */

-static void FETCH(f_rgba8888)( const struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 24)        );

-   texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );

-   texel[BCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );

-   texel[ACOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );

-}

-

-

-

-#if DIM == 3

-static void store_texel_rgba8888(struct gl_texture_image *texImage,

-                                 GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_8888(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_RGBA888_REV ***************************************************/

-

-/* Fetch texel from 1D, 2D or 3D abgr8888 texture, return 4 GLchans */

-static void FETCH(f_rgba8888_rev)( const struct gl_texture_image *texImage,

-                                   GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[RCOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );

-   texel[GCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );

-   texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );

-   texel[ACOMP] = UBYTE_TO_FLOAT( (s >> 24)        );

-}

-

-#if DIM == 3

-static void store_texel_rgba8888_rev(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_8888_REV(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_ARGB8888 ******************************************************/

-

-/* Fetch texel from 1D, 2D or 3D argb8888 texture, return 4 GLchans */

-static void FETCH(f_argb8888)( const struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );

-   texel[GCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );

-   texel[BCOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );

-   texel[ACOMP] = UBYTE_TO_FLOAT( (s >> 24)        );

-}

-

-#if DIM == 3

-static void store_texel_argb8888(struct gl_texture_image *texImage,

-                                 GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_8888(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_ARGB8888_REV **************************************************/

-

-/* Fetch texel from 1D, 2D or 3D argb8888_rev texture, return 4 GLfloats */

-static void FETCH(f_argb8888_rev)( const struct gl_texture_image *texImage,

-                                   GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[RCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );

-   texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );

-   texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 24)        );

-   texel[ACOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );

-}

-

-#if DIM == 3

-static void store_texel_argb8888_rev(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_8888(rgba[BCOMP], rgba[GCOMP], rgba[RCOMP], rgba[ACOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_XRGB8888 ******************************************************/

-

-/* Fetch texel from 1D, 2D or 3D xrgb8888 texture, return 4 GLchans */

-static void FETCH(f_xrgb8888)( const struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );

-   texel[GCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );

-   texel[BCOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );

-   texel[ACOMP] = 1.0f;

-}

-

-#if DIM == 3

-static void store_texel_xrgb8888(struct gl_texture_image *texImage,

-                                 GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_8888(0xff, rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_XRGB8888_REV **************************************************/

-

-/* Fetch texel from 1D, 2D or 3D xrgb8888_rev texture, return 4 GLfloats */

-static void FETCH(f_xrgb8888_rev)( const struct gl_texture_image *texImage,

-                                   GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[RCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );

-   texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );

-   texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 24)        );

-   texel[ACOMP] = 1.0f;

-}

-

-#if DIM == 3

-static void store_texel_xrgb8888_rev(struct gl_texture_image *texImage,

-                                     GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_8888(rgba[BCOMP], rgba[GCOMP], rgba[RCOMP], 0xff);

-}

-#endif

-

-

-/* MESA_FORMAT_RGB888 ********************************************************/

-

-/* Fetch texel from 1D, 2D or 3D rgb888 texture, return 4 GLchans */

-static void FETCH(f_rgb888)( const struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);

-   texel[RCOMP] = UBYTE_TO_FLOAT( src[2] );

-   texel[GCOMP] = UBYTE_TO_FLOAT( src[1] );

-   texel[BCOMP] = UBYTE_TO_FLOAT( src[0] );

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_rgb888(struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);

-   dst[0] = rgba[BCOMP];

-   dst[1] = rgba[GCOMP];

-   dst[2] = rgba[RCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_BGR888 ********************************************************/

-

-/* Fetch texel from 1D, 2D or 3D bgr888 texture, return 4 GLchans */

-static void FETCH(f_bgr888)( const struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);

-   texel[RCOMP] = UBYTE_TO_FLOAT( src[0] );

-   texel[GCOMP] = UBYTE_TO_FLOAT( src[1] );

-   texel[BCOMP] = UBYTE_TO_FLOAT( src[2] );

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_bgr888(struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);

-   dst[0] = rgba[RCOMP];

-   dst[1] = rgba[GCOMP];

-   dst[2] = rgba[BCOMP];

-}

-#endif

-

-

-/* use color expansion like (g << 2) | (g >> 4) (does somewhat random rounding)

-   instead of slow (g << 2) * 255 / 252 (always rounds down) */

-

-/* MESA_FORMAT_RGB565 ********************************************************/

-

-/* Fetch texel from 1D, 2D or 3D rgb565 texture, return 4 GLchans */

-static void FETCH(f_rgb565)( const struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   const GLushort s = *src;

-   texel[RCOMP] = ((s >> 11) & 0x1f) * (1.0F / 31.0F);

-   texel[GCOMP] = ((s >> 5 ) & 0x3f) * (1.0F / 63.0F);

-   texel[BCOMP] = ((s      ) & 0x1f) * (1.0F / 31.0F);

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_rgb565(struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_565(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_RGB565_REV ****************************************************/

-

-/* Fetch texel from 1D, 2D or 3D rgb565_rev texture, return 4 GLchans */

-static void FETCH(f_rgb565_rev)( const struct gl_texture_image *texImage,

-                                 GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   const GLushort s = (*src >> 8) | (*src << 8); /* byte swap */

-   texel[RCOMP] = UBYTE_TO_FLOAT( ((s >> 8) & 0xf8) | ((s >> 13) & 0x7) );

-   texel[GCOMP] = UBYTE_TO_FLOAT( ((s >> 3) & 0xfc) | ((s >>  9) & 0x3) );

-   texel[BCOMP] = UBYTE_TO_FLOAT( ((s << 3) & 0xf8) | ((s >>  2) & 0x7) );

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_rgb565_rev(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_565(rgba[BCOMP], rgba[GCOMP], rgba[RCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_ARGB4444 ******************************************************/

-

-/* Fetch texel from 1D, 2D or 3D argb444 texture, return 4 GLchans */

-static void FETCH(f_argb4444)( const struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   const GLushort s = *src;

-   texel[RCOMP] = ((s >>  8) & 0xf) * (1.0F / 15.0F);

-   texel[GCOMP] = ((s >>  4) & 0xf) * (1.0F / 15.0F);

-   texel[BCOMP] = ((s      ) & 0xf) * (1.0F / 15.0F);

-   texel[ACOMP] = ((s >> 12) & 0xf) * (1.0F / 15.0F);

-}

-

-#if DIM == 3

-static void store_texel_argb4444(struct gl_texture_image *texImage,

-                                 GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_4444(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_ARGB4444_REV **************************************************/

-

-/* Fetch texel from 1D, 2D or 3D argb4444_rev texture, return 4 GLchans */

-static void FETCH(f_argb4444_rev)( const struct gl_texture_image *texImage,

-                                   GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   texel[RCOMP] = ((s      ) & 0xf) * (1.0F / 15.0F);

-   texel[GCOMP] = ((s >> 12) & 0xf) * (1.0F / 15.0F);

-   texel[BCOMP] = ((s >>  8) & 0xf) * (1.0F / 15.0F);

-   texel[ACOMP] = ((s >>  4) & 0xf) * (1.0F / 15.0F);

-}

-

-#if DIM == 3

-static void store_texel_argb4444_rev(struct gl_texture_image *texImage,

-                                 GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_4444(rgba[ACOMP], rgba[BCOMP], rgba[GCOMP], rgba[RCOMP]);

-}

-#endif

-

-/* MESA_FORMAT_RGBA5551 ******************************************************/

-

-/* Fetch texel from 1D, 2D or 3D argb1555 texture, return 4 GLchans */

-static void FETCH(f_rgba5551)( const struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   const GLushort s = *src;

-   texel[RCOMP] = ((s >> 11) & 0x1f) * (1.0F / 31.0F);

-   texel[GCOMP] = ((s >>  6) & 0x1f) * (1.0F / 31.0F);

-   texel[BCOMP] = ((s >>  1) & 0x1f) * (1.0F / 31.0F);

-   texel[ACOMP] = ((s      ) & 0x01) * 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_rgba5551(struct gl_texture_image *texImage,

-                                 GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_5551(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);

-}

-#endif

-

-/* MESA_FORMAT_ARGB1555 ******************************************************/

-

-/* Fetch texel from 1D, 2D or 3D argb1555 texture, return 4 GLchans */

-static void FETCH(f_argb1555)( const struct gl_texture_image *texImage,

-			     GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   const GLushort s = *src;

-   texel[RCOMP] = ((s >> 10) & 0x1f) * (1.0F / 31.0F);

-   texel[GCOMP] = ((s >>  5) & 0x1f) * (1.0F / 31.0F);

-   texel[BCOMP] = ((s >>  0) & 0x1f) * (1.0F / 31.0F);

-   texel[ACOMP] = ((s >> 15) & 0x01) * 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_argb1555(struct gl_texture_image *texImage,

-                                 GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_1555(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_ARGB1555_REV **************************************************/

-

-/* Fetch texel from 1D, 2D or 3D argb1555_rev texture, return 4 GLchans */

-static void FETCH(f_argb1555_rev)( const struct gl_texture_image *texImage,

-                                   GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   const GLushort s = (*src << 8) | (*src >> 8); /* byteswap */

-   texel[RCOMP] = UBYTE_TO_FLOAT( ((s >>  7) & 0xf8) | ((s >> 12) & 0x7) );

-   texel[GCOMP] = UBYTE_TO_FLOAT( ((s >>  2) & 0xf8) | ((s >>  7) & 0x7) );

-   texel[BCOMP] = UBYTE_TO_FLOAT( ((s <<  3) & 0xf8) | ((s >>  2) & 0x7) );

-   texel[ACOMP] = UBYTE_TO_FLOAT( ((s >> 15) & 0x01) * 255 );

-}

-

-#if DIM == 3

-static void store_texel_argb1555_rev(struct gl_texture_image *texImage,

-                                 GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_1555_REV(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_ARGB2101010 ***************************************************/

-

-/* Fetch texel from 1D, 2D or 3D argb2101010 texture, return 4 GLchans */

-static void FETCH(f_argb2101010)( const struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   const GLuint s = *src;

-   texel[RCOMP] = ((s >> 20) & 0x3ff) * (1.0F / 1023.0F);

-   texel[GCOMP] = ((s >> 10) & 0x3ff) * (1.0F / 1023.0F);

-   texel[BCOMP] = ((s >>  0) & 0x3ff) * (1.0F / 1023.0F);

-   texel[ACOMP] = ((s >> 30) & 0x03) * (1.0F / 3.0F);

-}

-

-#if DIM == 3

-static void store_texel_argb2101010(struct gl_texture_image *texImage,

-                                    GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_2101010_UB(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_RG88 **********************************************************/

-

-/* Fetch texel from 1D, 2D or 3D rg88 texture, return 4 GLchans */

-static void FETCH(f_rg88)( const struct gl_texture_image *texImage,

-                           GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   texel[RCOMP] = UBYTE_TO_FLOAT( s & 0xff );

-   texel[GCOMP] = UBYTE_TO_FLOAT( s >> 8 );

-   texel[BCOMP] = 0.0;

-   texel[ACOMP] = 1.0;

-}

-

-#if DIM == 3

-static void store_texel_rg88(struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_88(rgba[RCOMP], rgba[GCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_RG88_REV ******************************************************/

-

-/* Fetch texel from 1D, 2D or 3D rg88_rev texture, return 4 GLchans */

-static void FETCH(f_rg88_rev)( const struct gl_texture_image *texImage,

-                           GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   texel[RCOMP] = UBYTE_TO_FLOAT( s & 0xff );

-   texel[GCOMP] = UBYTE_TO_FLOAT( s >> 8 );

-   texel[BCOMP] = 0.0;

-   texel[ACOMP] = 1.0;

-}

-

-#if DIM == 3

-static void store_texel_rg88_rev(struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_88(rgba[GCOMP], rgba[RCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_AL44 **********************************************************/

-

-/* Fetch texel from 1D, 2D or 3D al44 texture, return 4 GLchans */

-static void FETCH(f_al44)( const struct gl_texture_image *texImage,

-                           GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLubyte s = *TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = (s & 0xf) * (1.0F / 15.0F);

-   texel[ACOMP] = ((s >> 4) & 0xf) * (1.0F / 15.0F);

-}

-

-#if DIM == 3

-static void store_texel_al44(struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_44(rgba[ACOMP], rgba[RCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_AL88 **********************************************************/

-

-/* Fetch texel from 1D, 2D or 3D al88 texture, return 4 GLchans */

-static void FETCH(f_al88)( const struct gl_texture_image *texImage,

-                           GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   texel[RCOMP] = 

-   texel[GCOMP] = 

-   texel[BCOMP] = UBYTE_TO_FLOAT( s & 0xff );

-   texel[ACOMP] = UBYTE_TO_FLOAT( s >> 8 );

-}

-

-#if DIM == 3

-static void store_texel_al88(struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_88(rgba[ACOMP], rgba[RCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_R8 ************************************************************/

-

-/* Fetch texel from 1D, 2D or 3D rg88 texture, return 4 GLchans */

-static void FETCH(f_r8)(const struct gl_texture_image *texImage,

-			GLint i, GLint j, GLint k, GLfloat *texel)

-{

-   const GLubyte s = *TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   texel[RCOMP] = UBYTE_TO_FLOAT(s);

-   texel[GCOMP] = 0.0;

-   texel[BCOMP] = 0.0;

-   texel[ACOMP] = 1.0;

-}

-

-#if DIM == 3

-static void store_texel_r8(struct gl_texture_image *texImage,

-			   GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   *dst = rgba[RCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_R16 ***********************************************************/

-

-/* Fetch texel from 1D, 2D or 3D r16 texture, return 4 GLchans */

-static void FETCH(f_r16)(const struct gl_texture_image *texImage,

-			GLint i, GLint j, GLint k, GLfloat *texel)

-{

-   const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   texel[RCOMP] = USHORT_TO_FLOAT(s);

-   texel[GCOMP] = 0.0;

-   texel[BCOMP] = 0.0;

-   texel[ACOMP] = 1.0;

-}

-

-#if DIM == 3

-static void store_texel_r16(struct gl_texture_image *texImage,

-			    GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLushort *rgba = (const GLushort *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = rgba[RCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_AL88_REV ******************************************************/

-

-/* Fetch texel from 1D, 2D or 3D al88_rev texture, return 4 GLchans */

-static void FETCH(f_al88_rev)( const struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   texel[RCOMP] = 

-   texel[GCOMP] = 

-   texel[BCOMP] = UBYTE_TO_FLOAT( s >> 8 );

-   texel[ACOMP] = UBYTE_TO_FLOAT( s & 0xff );

-}

-

-#if DIM == 3

-static void store_texel_al88_rev(struct gl_texture_image *texImage,

-                                 GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_88(rgba[RCOMP], rgba[ACOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_RG1616 ********************************************************/

-

-/* Fetch texel from 1D, 2D or 3D rg1616 texture, return 4 GLchans */

-static void FETCH(f_rg1616)( const struct gl_texture_image *texImage,

-                           GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[RCOMP] = USHORT_TO_FLOAT( s & 0xffff );

-   texel[GCOMP] = USHORT_TO_FLOAT( s >> 16 );

-   texel[BCOMP] = 0.0;

-   texel[ACOMP] = 1.0;

-}

-

-#if DIM == 3

-static void store_texel_rg1616(struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_1616(rgba[RCOMP], rgba[GCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_RG1616_REV ****************************************************/

-

-/* Fetch texel from 1D, 2D or 3D rg1616_rev texture, return 4 GLchans */

-static void FETCH(f_rg1616_rev)( const struct gl_texture_image *texImage,

-                           GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[RCOMP] = USHORT_TO_FLOAT( s >> 16 );

-   texel[GCOMP] = USHORT_TO_FLOAT( s & 0xffff );

-   texel[BCOMP] = 0.0;

-   texel[ACOMP] = 1.0;

-}

-

-#if DIM == 3

-static void store_texel_rg1616_rev(struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_1616(rgba[GCOMP], rgba[RCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_AL1616 ********************************************************/

-

-/* Fetch texel from 1D, 2D or 3D al1616 texture, return 4 GLchans */

-static void FETCH(f_al1616)( const struct gl_texture_image *texImage,

-			     GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = USHORT_TO_FLOAT( s & 0xffff );

-   texel[ACOMP] = USHORT_TO_FLOAT( s >> 16 );

-}

-

-#if DIM == 3

-static void store_texel_al1616(struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLushort *rgba = (const GLushort *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_1616(rgba[ACOMP], rgba[RCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_AL1616_REV ****************************************************/

-

-/* Fetch texel from 1D, 2D or 3D al1616_rev texture, return 4 GLchans */

-static void FETCH(f_al1616_rev)( const struct gl_texture_image *texImage,

-				 GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = USHORT_TO_FLOAT( s >> 16 );

-   texel[ACOMP] = USHORT_TO_FLOAT( s & 0xffff );

-}

-

-#if DIM == 3

-static void store_texel_al1616_rev(struct gl_texture_image *texImage,

-				   GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLushort *rgba = (const GLushort *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_1616(rgba[RCOMP], rgba[ACOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_RGB332 ********************************************************/

-

-/* Fetch texel from 1D, 2D or 3D rgb332 texture, return 4 GLchans */

-static void FETCH(f_rgb332)( const struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   const GLubyte s = *src;

-   texel[RCOMP] = ((s >> 5) & 0x7) * (1.0F / 7.0F);

-   texel[GCOMP] = ((s >> 2) & 0x7) * (1.0F / 7.0F);

-   texel[BCOMP] = ((s     ) & 0x3) * (1.0F / 3.0F);

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_rgb332(struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_332(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_A8 ************************************************************/

-

-/* Fetch texel from 1D, 2D or 3D a8 texture, return 4 GLchans */

-static void FETCH(f_a8)( const struct gl_texture_image *texImage,

-                         GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = 0.0F;

-   texel[ACOMP] = UBYTE_TO_FLOAT( src[0] );

-}

-

-#if DIM == 3

-static void store_texel_a8(struct gl_texture_image *texImage,

-                           GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   *dst = rgba[ACOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_A16 ************************************************************/

-

-/* Fetch texel from 1D, 2D or 3D a8 texture, return 4 GLchans */

-static void FETCH(f_a16)( const struct gl_texture_image *texImage,

-                          GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = 0.0F;

-   texel[ACOMP] = USHORT_TO_FLOAT( src[0] );

-}

-

-#if DIM == 3

-static void store_texel_a16(struct gl_texture_image *texImage,

-                            GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLushort *rgba = (const GLushort *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = rgba[ACOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_L8 ************************************************************/

-

-/* Fetch texel from 1D, 2D or 3D l8 texture, return 4 GLchans */

-static void FETCH(f_l8)( const struct gl_texture_image *texImage,

-                         GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = UBYTE_TO_FLOAT( src[0] );

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_l8(struct gl_texture_image *texImage,

-                           GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   *dst = rgba[RCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_L16 ***********************************************************/

-

-/* Fetch texel from 1D, 2D or 3D l16 texture, return 4 GLchans */

-static void FETCH(f_l16)( const struct gl_texture_image *texImage,

-                          GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = USHORT_TO_FLOAT( src[0] );

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_l16(struct gl_texture_image *texImage,

-                            GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLushort *rgba = (const GLushort *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = rgba[RCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_I8 ************************************************************/

-

-/* Fetch texel from 1D, 2D or 3D i8 texture, return 4 GLchans */

-static void FETCH(f_i8)( const struct gl_texture_image *texImage,

-                         GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] =

-   texel[ACOMP] = UBYTE_TO_FLOAT( src[0] );

-}

-

-#if DIM == 3

-static void store_texel_i8(struct gl_texture_image *texImage,

-                           GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   *dst = rgba[RCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_I16 ***********************************************************/

-

-/* Fetch texel from 1D, 2D or 3D i16 texture, return 4 GLchans */

-static void FETCH(f_i16)( const struct gl_texture_image *texImage,

-                          GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] =

-   texel[ACOMP] = USHORT_TO_FLOAT( src[0] );

-}

-

-#if DIM == 3

-static void store_texel_i16(struct gl_texture_image *texImage,

-                            GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLushort *rgba = (const GLushort *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   *dst = rgba[RCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_CI8 ***********************************************************/

-

-/* Fetch CI texel from 1D, 2D or 3D ci8 texture, lookup the index in a

- * color table, and return 4 GLchans.

- */

-static void FETCH(f_ci8)( const struct gl_texture_image *texImage,

-                          GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   const struct gl_color_table *palette;

-   GLuint index;

-   GET_CURRENT_CONTEXT(ctx);

-

-   if (ctx->Texture.SharedPalette) {

-      palette = &ctx->Texture.Palette;

-   }

-   else {

-      palette = &texImage->TexObject->Palette;

-   }

-   if (palette->Size == 0)

-      return; /* undefined results */

-

-   /* Mask the index against size of palette to avoid going out of bounds */

-   index = (*src) & (palette->Size - 1);

-

-   {

-      const GLfloat *table = palette->TableF;

-      switch (palette->_BaseFormat) {

-      case GL_ALPHA:

-         texel[RCOMP] =

-         texel[GCOMP] =

-         texel[BCOMP] = 0.0F;

-         texel[ACOMP] = table[index];

-         break;

-      case GL_LUMINANCE:

-         texel[RCOMP] =

-         texel[GCOMP] =

-         texel[BCOMP] = table[index];

-         texel[ACOMP] = 1.0F;

-         break;

-      case GL_INTENSITY:

-         texel[RCOMP] =

-         texel[GCOMP] =

-         texel[BCOMP] =

-         texel[ACOMP] = table[index];

-         break;

-      case GL_LUMINANCE_ALPHA:

-         texel[RCOMP] =

-         texel[GCOMP] =

-         texel[BCOMP] = table[index * 2 + 0];

-         texel[ACOMP] = table[index * 2 + 1];

-         break;

-      case GL_RGB:

-         texel[RCOMP] = table[index * 3 + 0];

-         texel[GCOMP] = table[index * 3 + 1];

-         texel[BCOMP] = table[index * 3 + 2];

-         texel[ACOMP] = 1.0F;

-         break;

-      case GL_RGBA:

-         texel[RCOMP] = table[index * 4 + 0];

-         texel[GCOMP] = table[index * 4 + 1];

-         texel[BCOMP] = table[index * 4 + 2];

-         texel[ACOMP] = table[index * 4 + 3];

-         break;

-      default:

-         _mesa_problem(ctx, "Bad palette format in fetch_texel_ci8");

-         return;

-      }

-   }

-}

-

-#if DIM == 3

-static void store_texel_ci8(struct gl_texture_image *texImage,

-                            GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *index = (const GLubyte *) texel;

-   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   *dst = *index;

-}

-#endif

-

-

-/* Fetch texel from 1D, 2D or 3D srgb8 texture, return 4 GLfloats */

-/* Note: component order is same as for MESA_FORMAT_RGB888 */

-static void FETCH(srgb8)(const struct gl_texture_image *texImage,

-                         GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);

-   texel[RCOMP] = nonlinear_to_linear(src[2]);

-   texel[GCOMP] = nonlinear_to_linear(src[1]);

-   texel[BCOMP] = nonlinear_to_linear(src[0]);

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_srgb8(struct gl_texture_image *texImage,

-                              GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);

-   dst[0] = rgba[BCOMP]; /* no conversion */

-   dst[1] = rgba[GCOMP];

-   dst[2] = rgba[RCOMP];

-}

-#endif

-

-/* Fetch texel from 1D, 2D or 3D srgba8 texture, return 4 GLfloats */

-static void FETCH(srgba8)(const struct gl_texture_image *texImage,

-                          GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[RCOMP] = nonlinear_to_linear( (s >> 24) );

-   texel[GCOMP] = nonlinear_to_linear( (s >> 16) & 0xff );

-   texel[BCOMP] = nonlinear_to_linear( (s >>  8) & 0xff );

-   texel[ACOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff ); /* linear! */

-}

-

-#if DIM == 3

-static void store_texel_srgba8(struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_8888(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);

-}

-#endif

-

-/* Fetch texel from 1D, 2D or 3D sargb8 texture, return 4 GLfloats */

-static void FETCH(sargb8)(const struct gl_texture_image *texImage,

-                          GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[RCOMP] = nonlinear_to_linear( (s >> 16) & 0xff );

-   texel[GCOMP] = nonlinear_to_linear( (s >>  8) & 0xff );

-   texel[BCOMP] = nonlinear_to_linear( (s      ) & 0xff );

-   texel[ACOMP] = UBYTE_TO_FLOAT( (s >> 24) ); /* linear! */

-}

-

-#if DIM == 3

-static void store_texel_sargb8(struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_8888(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);

-}

-#endif

-

-/* Fetch texel from 1D, 2D or 3D sl8 texture, return 4 GLfloats */

-static void FETCH(sl8)(const struct gl_texture_image *texImage,

-                       GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   texel[RCOMP] = 

-   texel[GCOMP] = 

-   texel[BCOMP] = nonlinear_to_linear(src[0]);

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_sl8(struct gl_texture_image *texImage,

-                            GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);

-   dst[0] = rgba[RCOMP];

-}

-#endif

-

-/* Fetch texel from 1D, 2D or 3D sla8 texture, return 4 GLfloats */

-static void FETCH(sla8)(const struct gl_texture_image *texImage,

-                       GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 2);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = nonlinear_to_linear(src[0]);

-   texel[ACOMP] = UBYTE_TO_FLOAT(src[1]); /* linear */

-}

-

-#if DIM == 3

-static void store_texel_sla8(struct gl_texture_image *texImage,

-                            GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 2);

-   dst[0] = rgba[RCOMP];

-   dst[1] = rgba[ACOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_RGBA_INT8 **************************************************/

-

-static void

-FETCH(rgba_int8)(const struct gl_texture_image *texImage,

-                 GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLbyte *src = TEXEL_ADDR(GLbyte, texImage, i, j, k, 4);

-   texel[RCOMP] = (GLfloat) src[0];

-   texel[GCOMP] = (GLfloat) src[1];

-   texel[BCOMP] = (GLfloat) src[2];

-   texel[ACOMP] = (GLfloat) src[3];

-}

-

-#if DIM == 3

-static void

-store_texel_rgba_int8(struct gl_texture_image *texImage,

-                      GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLbyte *rgba = (const GLbyte *) texel;

-   GLbyte *dst = TEXEL_ADDR(GLbyte, texImage, i, j, k, 4);

-   dst[0] = rgba[RCOMP];

-   dst[1] = rgba[GCOMP];

-   dst[2] = rgba[BCOMP];

-   dst[3] = rgba[ACOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_RGBA_INT16 **************************************************/

-

-static void

-FETCH(rgba_int16)(const struct gl_texture_image *texImage,

-                  GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLshort *src = TEXEL_ADDR(GLshort, texImage, i, j, k, 4);

-   texel[RCOMP] = (GLfloat) src[0];

-   texel[GCOMP] = (GLfloat) src[1];

-   texel[BCOMP] = (GLfloat) src[2];

-   texel[ACOMP] = (GLfloat) src[3];

-}

-

-#if DIM == 3

-static void

-store_texel_rgba_int16(struct gl_texture_image *texImage,

-                       GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLshort *rgba = (const GLshort *) texel;

-   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 4);

-   dst[0] = rgba[RCOMP];

-   dst[1] = rgba[GCOMP];

-   dst[2] = rgba[BCOMP];

-   dst[3] = rgba[ACOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_RGBA_INT32 **************************************************/

-

-static void

-FETCH(rgba_int32)(const struct gl_texture_image *texImage,

-                  GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLint *src = TEXEL_ADDR(GLint, texImage, i, j, k, 4);

-   texel[RCOMP] = (GLfloat) src[0];

-   texel[GCOMP] = (GLfloat) src[1];

-   texel[BCOMP] = (GLfloat) src[2];

-   texel[ACOMP] = (GLfloat) src[3];

-}

-

-#if DIM == 3

-static void

-store_texel_rgba_int32(struct gl_texture_image *texImage,

-                       GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLint *rgba = (const GLint *) texel;

-   GLint *dst = TEXEL_ADDR(GLint, texImage, i, j, k, 4);

-   dst[0] = rgba[RCOMP];

-   dst[1] = rgba[GCOMP];

-   dst[2] = rgba[BCOMP];

-   dst[3] = rgba[ACOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_RGBA_UINT8 **************************************************/

-

-static void

-FETCH(rgba_uint8)(const struct gl_texture_image *texImage,

-                 GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 4);

-   texel[RCOMP] = (GLfloat) src[0];

-   texel[GCOMP] = (GLfloat) src[1];

-   texel[BCOMP] = (GLfloat) src[2];

-   texel[ACOMP] = (GLfloat) src[3];

-}

-

-#if DIM == 3

-static void

-store_texel_rgba_uint8(struct gl_texture_image *texImage,

-                      GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 4);

-   dst[0] = rgba[RCOMP];

-   dst[1] = rgba[GCOMP];

-   dst[2] = rgba[BCOMP];

-   dst[3] = rgba[ACOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_RGBA_UINT16 **************************************************/

-

-static void

-FETCH(rgba_uint16)(const struct gl_texture_image *texImage,

-                  GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 4);

-   texel[RCOMP] = (GLfloat) src[0];

-   texel[GCOMP] = (GLfloat) src[1];

-   texel[BCOMP] = (GLfloat) src[2];

-   texel[ACOMP] = (GLfloat) src[3];

-}

-

-#if DIM == 3

-static void

-store_texel_rgba_uint16(struct gl_texture_image *texImage,

-                       GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLushort *rgba = (const GLushort *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 4);

-   dst[0] = rgba[RCOMP];

-   dst[1] = rgba[GCOMP];

-   dst[2] = rgba[BCOMP];

-   dst[3] = rgba[ACOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_RGBA_UINT32 **************************************************/

-

-static void

-FETCH(rgba_uint32)(const struct gl_texture_image *texImage,

-                  GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 4);

-   texel[RCOMP] = (GLfloat) src[0];

-   texel[GCOMP] = (GLfloat) src[1];

-   texel[BCOMP] = (GLfloat) src[2];

-   texel[ACOMP] = (GLfloat) src[3];

-}

-

-#if DIM == 3

-static void

-store_texel_rgba_uint32(struct gl_texture_image *texImage,

-                       GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLuint *rgba = (const GLuint *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 4);

-   dst[0] = rgba[RCOMP];

-   dst[1] = rgba[GCOMP];

-   dst[2] = rgba[BCOMP];

-   dst[3] = rgba[ACOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_DUDV8 ********************************************************/

-

-/* this format by definition produces 0,0,0,1 as rgba values,

-   however we'll return the dudv values as rg and fix up elsewhere */

-static void FETCH(dudv8)(const struct gl_texture_image *texImage,

-                         GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLbyte *src = TEXEL_ADDR(GLbyte, texImage, i, j, k, 2);

-   texel[RCOMP] = BYTE_TO_FLOAT(src[0]);

-   texel[GCOMP] = BYTE_TO_FLOAT(src[1]);

-   texel[BCOMP] = 0;

-   texel[ACOMP] = 0;

-}

-

-

-/* MESA_FORMAT_SIGNED_R8 ***********************************************/

-

-static void FETCH(signed_r8)( const struct gl_texture_image *texImage,

-                              GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLbyte s = *TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);

-   texel[RCOMP] = BYTE_TO_FLOAT_TEX( s );

-   texel[GCOMP] = 0.0F;

-   texel[BCOMP] = 0.0F;

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_signed_r8(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLbyte *rgba = (const GLbyte *) texel;

-   GLbyte *dst = TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);

-   *dst = rgba[RCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_SIGNED_A8 ***********************************************/

-

-static void FETCH(signed_a8)( const struct gl_texture_image *texImage,

-                              GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLbyte s = *TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);

-   texel[RCOMP] = 0.0F;

-   texel[GCOMP] = 0.0F;

-   texel[BCOMP] = 0.0F;

-   texel[ACOMP] = BYTE_TO_FLOAT_TEX( s );

-}

-

-#if DIM == 3

-static void store_texel_signed_a8(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLbyte *rgba = (const GLbyte *) texel;

-   GLbyte *dst = TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);

-   *dst = rgba[ACOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_SIGNED_L8 ***********************************************/

-

-static void FETCH(signed_l8)( const struct gl_texture_image *texImage,

-                              GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLbyte s = *TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = BYTE_TO_FLOAT_TEX( s );

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_signed_l8(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLbyte *rgba = (const GLbyte *) texel;

-   GLbyte *dst = TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);

-   *dst = rgba[RCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_SIGNED_I8 ***********************************************/

-

-static void FETCH(signed_i8)( const struct gl_texture_image *texImage,

-                              GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLbyte s = *TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] =

-   texel[ACOMP] = BYTE_TO_FLOAT_TEX( s );

-}

-

-#if DIM == 3

-static void store_texel_signed_i8(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLbyte *rgba = (const GLbyte *) texel;

-   GLbyte *dst = TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);

-   *dst = rgba[RCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_SIGNED_RG88_REV ***********************************************/

-

-static void FETCH(signed_rg88_rev)( const struct gl_texture_image *texImage,

-                                    GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);

-   texel[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s & 0xff) );

-   texel[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 8) );

-   texel[BCOMP] = 0.0F;

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_signed_rg88_rev(struct gl_texture_image *texImage,

-                                        GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLbyte *rg = (const GLbyte *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   dst[0] = PACK_COLOR_88(rg[GCOMP], rg[RCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_SIGNED_AL88 ***********************************************/

-

-static void FETCH(signed_al88)( const struct gl_texture_image *texImage,

-                                GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s & 0xff) );

-   texel[ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 8) );

-}

-

-#if DIM == 3

-static void store_texel_signed_al88(struct gl_texture_image *texImage,

-                                    GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLbyte *rg = (const GLbyte *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);

-   dst[0] = PACK_COLOR_88(rg[ACOMP], rg[RCOMP]);

-}

-#endif

-

-

-/* MESA_FORMAT_SIGNED_RGBX8888 ***********************************************/

-

-static void FETCH(signed_rgbx8888)( const struct gl_texture_image *texImage,

-			            GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 24) );

-   texel[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 16) );

-   texel[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >>  8) );

-   texel[ACOMP] = 1.0f;

-}

-

-#if DIM == 3

-static void store_texel_signed_rgbx8888(struct gl_texture_image *texImage,

-                                        GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLbyte *rgba = (const GLbyte *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_8888(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], 255);

-}

-#endif

-

-

-/* MESA_FORMAT_SIGNED_RGBA8888 ***********************************************/

-

-static void FETCH(signed_rgba8888)( const struct gl_texture_image *texImage,

-			            GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 24) );

-   texel[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 16) );

-   texel[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >>  8) );

-   texel[ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s      ) );

-}

-

-#if DIM == 3

-static void store_texel_signed_rgba8888(struct gl_texture_image *texImage,

-                                        GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLbyte *rgba = (const GLbyte *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_8888(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);

-}

-#endif

-

-static void FETCH(signed_rgba8888_rev)( const struct gl_texture_image *texImage,

-                                        GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   texel[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s      ) );

-   texel[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >>  8) );

-   texel[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 16) );

-   texel[ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 24) );

-}

-

-#if DIM == 3

-static void store_texel_signed_rgba8888_rev(struct gl_texture_image *texImage,

-                                            GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLubyte *rgba = (const GLubyte *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = PACK_COLOR_8888_REV(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);

-}

-#endif

-

-

-

-/* MESA_FORMAT_SIGNED_R16 ***********************************************/

-

-static void

-FETCH(signed_r16)(const struct gl_texture_image *texImage,

-                  GLint i, GLint j, GLint k, GLfloat *texel)

-{

-   const GLshort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);

-   texel[RCOMP] = SHORT_TO_FLOAT_TEX( s );

-   texel[GCOMP] = 0.0F;

-   texel[BCOMP] = 0.0F;

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void

-store_texel_signed_r16(struct gl_texture_image *texImage,

-                       GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLshort *rgba = (const GLshort *) texel;

-   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 1);

-   *dst = rgba[0];

-}

-#endif

-

-

-/* MESA_FORMAT_SIGNED_A16 ***********************************************/

-

-static void

-FETCH(signed_a16)(const struct gl_texture_image *texImage,

-                  GLint i, GLint j, GLint k, GLfloat *texel)

-{

-   const GLshort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);

-   texel[RCOMP] = 0.0F;

-   texel[GCOMP] = 0.0F;

-   texel[BCOMP] = 0.0F;

-   texel[ACOMP] = SHORT_TO_FLOAT_TEX( s );

-}

-

-#if DIM == 3

-static void

-store_texel_signed_a16(struct gl_texture_image *texImage,

-                       GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLshort *rgba = (const GLshort *) texel;

-   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 1);

-   *dst = rgba[ACOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_SIGNED_L16 ***********************************************/

-

-static void

-FETCH(signed_l16)(const struct gl_texture_image *texImage,

-                  GLint i, GLint j, GLint k, GLfloat *texel)

-{

-   const GLshort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = SHORT_TO_FLOAT_TEX( s );

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void

-store_texel_signed_l16(struct gl_texture_image *texImage,

-                       GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLshort *rgba = (const GLshort *) texel;

-   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 1);

-   *dst = rgba[RCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_SIGNED_I16 ***********************************************/

-

-static void

-FETCH(signed_i16)(const struct gl_texture_image *texImage,

-                  GLint i, GLint j, GLint k, GLfloat *texel)

-{

-   const GLshort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] =

-   texel[ACOMP] = SHORT_TO_FLOAT_TEX( s );

-}

-

-#if DIM == 3

-static void

-store_texel_signed_i16(struct gl_texture_image *texImage,

-                       GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLshort *rgba = (const GLshort *) texel;

-   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 1);

-   *dst = rgba[RCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_SIGNED_RG1616 ***********************************************/

-

-static void

-FETCH(signed_rg1616)(const struct gl_texture_image *texImage,

-                    GLint i, GLint j, GLint k, GLfloat *texel)

-{

-   const GLshort *s = TEXEL_ADDR(GLshort, texImage, i, j, k, 2);

-   texel[RCOMP] = SHORT_TO_FLOAT_TEX( s[0] );

-   texel[GCOMP] = SHORT_TO_FLOAT_TEX( s[1] );

-   texel[BCOMP] = 0.0F;

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void

-store_texel_signed_rg1616(struct gl_texture_image *texImage,

-                         GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLshort *rgba = (const GLshort *) texel;

-   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 2);

-   dst[0] = rgba[RCOMP];

-   dst[1] = rgba[GCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_SIGNED_AL1616 ***********************************************/

-

-static void

-FETCH(signed_al1616)(const struct gl_texture_image *texImage,

-                    GLint i, GLint j, GLint k, GLfloat *texel)

-{

-   const GLshort *s = TEXEL_ADDR(GLshort, texImage, i, j, k, 2);

-   texel[RCOMP] =

-   texel[GCOMP] =

-   texel[BCOMP] = SHORT_TO_FLOAT_TEX( s[0] );

-   texel[ACOMP] = SHORT_TO_FLOAT_TEX( s[1] );

-}

-

-#if DIM == 3

-static void

-store_texel_signed_al1616(struct gl_texture_image *texImage,

-                         GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLshort *rgba = (const GLshort *) texel;

-   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 2);

-   dst[0] = rgba[RCOMP];

-   dst[1] = rgba[ACOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_SIGNED_RGB_16 ***********************************************/

-

-static void 

-FETCH(signed_rgb_16)(const struct gl_texture_image *texImage,

-                     GLint i, GLint j, GLint k, GLfloat *texel)

-{

-   const GLshort *s = TEXEL_ADDR(GLshort, texImage, i, j, k, 3);

-   texel[RCOMP] = SHORT_TO_FLOAT_TEX( s[0] );

-   texel[GCOMP] = SHORT_TO_FLOAT_TEX( s[1] );

-   texel[BCOMP] = SHORT_TO_FLOAT_TEX( s[2] );

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void

-store_texel_signed_rgb_16(struct gl_texture_image *texImage,

-                          GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLshort *rgba = (const GLshort *) texel;

-   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 3);

-   dst[0] = rgba[RCOMP];

-   dst[1] = rgba[GCOMP];

-   dst[2] = rgba[BCOMP];

-}

-#endif

-

-

-/* MESA_FORMAT_SIGNED_RGBA_16 ***********************************************/

-

-static void

-FETCH(signed_rgba_16)(const struct gl_texture_image *texImage,

-                      GLint i, GLint j, GLint k, GLfloat *texel)

-{

-   const GLshort *s = TEXEL_ADDR(GLshort, texImage, i, j, k, 4);

-   texel[RCOMP] = SHORT_TO_FLOAT_TEX( s[0] );

-   texel[GCOMP] = SHORT_TO_FLOAT_TEX( s[1] );

-   texel[BCOMP] = SHORT_TO_FLOAT_TEX( s[2] );

-   texel[ACOMP] = SHORT_TO_FLOAT_TEX( s[3] );

-}

-

-#if DIM == 3

-static void

-store_texel_signed_rgba_16(struct gl_texture_image *texImage,

-                           GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLshort *rgba = (const GLshort *) texel;

-   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 4);

-   dst[0] = rgba[RCOMP];

-   dst[1] = rgba[GCOMP];

-   dst[2] = rgba[BCOMP];

-   dst[3] = rgba[ACOMP];

-}

-#endif

-

-

-

-/* MESA_FORMAT_RGBA_16 ***********************************************/

-

-static void

-FETCH(rgba_16)(const struct gl_texture_image *texImage,

-               GLint i, GLint j, GLint k, GLfloat *texel)

-{

-   const GLushort *s = TEXEL_ADDR(GLushort, texImage, i, j, k, 4);

-   texel[RCOMP] = USHORT_TO_FLOAT( s[0] );

-   texel[GCOMP] = USHORT_TO_FLOAT( s[1] );

-   texel[BCOMP] = USHORT_TO_FLOAT( s[2] );

-   texel[ACOMP] = USHORT_TO_FLOAT( s[3] );

-}

-

-#if DIM == 3

-static void

-store_texel_rgba_16(struct gl_texture_image *texImage,

-                    GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLushort *rgba = (const GLushort *) texel;

-   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 4);

-   dst[0] = rgba[RCOMP];

-   dst[1] = rgba[GCOMP];

-   dst[2] = rgba[BCOMP];

-   dst[3] = rgba[ACOMP];

-}

-#endif

-

-

-

-/* MESA_FORMAT_YCBCR *********************************************************/

-

-/* Fetch texel from 1D, 2D or 3D ycbcr texture, return 4 GLfloats.

- * We convert YCbCr to RGB here.

- */

-static void FETCH(f_ycbcr)( const struct gl_texture_image *texImage,

-                            GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort *src0 = TEXEL_ADDR(GLushort, texImage, (i & ~1), j, k, 1); /* even */

-   const GLushort *src1 = src0 + 1;                               /* odd */

-   const GLubyte y0 = (*src0 >> 8) & 0xff;  /* luminance */

-   const GLubyte cb = *src0 & 0xff;         /* chroma U */

-   const GLubyte y1 = (*src1 >> 8) & 0xff;  /* luminance */

-   const GLubyte cr = *src1 & 0xff;         /* chroma V */

-   const GLubyte y = (i & 1) ? y1 : y0;     /* choose even/odd luminance */

-   GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);

-   GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);

-   GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);

-   r *= (1.0F / 255.0F);

-   g *= (1.0F / 255.0F);

-   b *= (1.0F / 255.0F);

-   texel[RCOMP] = CLAMP(r, 0.0F, 1.0F);

-   texel[GCOMP] = CLAMP(g, 0.0F, 1.0F);

-   texel[BCOMP] = CLAMP(b, 0.0F, 1.0F);

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_ycbcr(struct gl_texture_image *texImage,

-                              GLint i, GLint j, GLint k, const void *texel)

-{

-   (void) texImage;

-   (void) i;

-   (void) j;

-   (void) k;

-   (void) texel;

-   /* XXX to do */

-}

-#endif

-

-

-/* MESA_FORMAT_YCBCR_REV *****************************************************/

-

-/* Fetch texel from 1D, 2D or 3D ycbcr_rev texture, return 4 GLfloats.

- * We convert YCbCr to RGB here.

- */

-static void FETCH(f_ycbcr_rev)( const struct gl_texture_image *texImage,

-                                GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLushort *src0 = TEXEL_ADDR(GLushort, texImage, (i & ~1), j, k, 1); /* even */

-   const GLushort *src1 = src0 + 1;                               /* odd */

-   const GLubyte y0 = *src0 & 0xff;         /* luminance */

-   const GLubyte cr = (*src0 >> 8) & 0xff;  /* chroma V */

-   const GLubyte y1 = *src1 & 0xff;         /* luminance */

-   const GLubyte cb = (*src1 >> 8) & 0xff;  /* chroma U */

-   const GLubyte y = (i & 1) ? y1 : y0;     /* choose even/odd luminance */

-   GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);

-   GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);

-   GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);

-   r *= (1.0F / 255.0F);

-   g *= (1.0F / 255.0F);

-   b *= (1.0F / 255.0F);

-   texel[RCOMP] = CLAMP(r, 0.0F, 1.0F);

-   texel[GCOMP] = CLAMP(g, 0.0F, 1.0F);

-   texel[BCOMP] = CLAMP(b, 0.0F, 1.0F);

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_ycbcr_rev(struct gl_texture_image *texImage,

-                                  GLint i, GLint j, GLint k, const void *texel)

-{

-   (void) texImage;

-   (void) i;

-   (void) j;

-   (void) k;

-   (void) texel;

-   /* XXX to do */

-}

-#endif

-

-

-/* MESA_TEXFORMAT_Z24_S8 ***************************************************/

-

-static void FETCH(f_z24_s8)( const struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   /* only return Z, not stencil data */

-   const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   const GLfloat scale = 1.0F / (GLfloat) 0xffffff;

-   texel[0] = ((*src) >> 8) * scale;

-   ASSERT(texImage->TexFormat == MESA_FORMAT_Z24_S8);

-   ASSERT(texel[0] >= 0.0F);

-   ASSERT(texel[0] <= 1.0F);

-}

-

-#if DIM == 3

-static void store_texel_z24_s8(struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, const void *texel)

-{

-   /* only store Z, not stencil */

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   GLfloat depth = *((GLfloat *) texel);

-   GLuint zi = ((GLuint) (depth * 0xffffff)) << 8;

-   *dst = zi | (*dst & 0xff);

-}

-#endif

-

-

-/* MESA_TEXFORMAT_S8_Z24 ***************************************************/

-

-static void FETCH(f_s8_z24)( const struct gl_texture_image *texImage,

-                             GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   /* only return Z, not stencil data */

-   const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   const GLfloat scale = 1.0F / (GLfloat) 0xffffff;

-   texel[0] = ((*src) & 0x00ffffff) * scale;

-   ASSERT(texImage->TexFormat == MESA_FORMAT_S8_Z24);

-   ASSERT(texel[0] >= 0.0F);

-   ASSERT(texel[0] <= 1.0F);

-}

-

-#if DIM == 3

-static void store_texel_s8_z24(struct gl_texture_image *texImage,

-                               GLint i, GLint j, GLint k, const void *texel)

-{

-   /* only store Z, not stencil */

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   GLfloat depth = *((GLfloat *) texel);

-   GLuint zi = (GLuint) (depth * 0xffffff);

-   *dst = zi | (*dst & 0xff000000);

-}

-#endif

-

-

-/* MESA_FORMAT_RGB9_E5 ******************************************************/

-

-static void FETCH(rgb9_e5)( const struct gl_texture_image *texImage,

-                            GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   rgb9e5_to_float3(*src, texel);

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_rgb9_e5(struct gl_texture_image *texImage,

-                                GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *src = (const GLfloat *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = float3_to_rgb9e5(src);

-}

-#endif

-

-

-/* MESA_FORMAT_R11_G11_B10_FLOAT *********************************************/

-

-static void FETCH(r11_g11_b10f)( const struct gl_texture_image *texImage,

-                                 GLint i, GLint j, GLint k, GLfloat *texel )

-{

-   const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   r11g11b10f_to_float3(*src, texel);

-   texel[ACOMP] = 1.0F;

-}

-

-#if DIM == 3

-static void store_texel_r11_g11_b10f(struct gl_texture_image *texImage,

-                                     GLint i, GLint j, GLint k, const void *texel)

-{

-   const GLfloat *src = (const GLfloat *) texel;

-   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);

-   *dst = float3_to_r11g11b10f(src);

-}

-#endif

-

-

-#undef TEXEL_ADDR

-#undef DIM

-#undef FETCH

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.7
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (c) 2008-2009  VMware, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * \file texfetch_tmp.h
+ * Texel fetch functions template.
+ * 
+ * This template file is used by texfetch.c to generate texel fetch functions
+ * for 1-D, 2-D and 3-D texture images. 
+ *
+ * It should be expanded by defining \p DIM as the number texture dimensions
+ * (1, 2 or 3).  According to the value of \p DIM a series of macros is defined
+ * for the texel lookup in the gl_texture_image::Data.
+ * 
+ * \author Gareth Hughes
+ * \author Brian Paul
+ */
+
+
+#if DIM == 1
+
+#define TEXEL_ADDR( type, image, i, j, k, size ) \
+	((void) (j), (void) (k), ((type *)(image)->Data + (i) * (size)))
+
+#define FETCH(x) fetch_texel_1d_##x
+
+#elif DIM == 2
+
+#define TEXEL_ADDR( type, image, i, j, k, size )			\
+	((void) (k),							\
+	 ((type *)(image)->Data + ((image)->RowStride * (j) + (i)) * (size)))
+
+#define FETCH(x) fetch_texel_2d_##x
+
+#elif DIM == 3
+
+#define TEXEL_ADDR( type, image, i, j, k, size )			\
+	((type *)(image)->Data + ((image)->ImageOffsets[k]		\
+             + (image)->RowStride * (j) + (i)) * (size))
+
+#define FETCH(x) fetch_texel_3d_##x
+
+#else
+#error	illegal number of texture dimensions
+#endif
+
+
+/* MESA_FORMAT_Z32 ***********************************************************/
+
+/* Fetch depth texel from 1D, 2D or 3D 32-bit depth texture,
+ * returning 1 GLfloat.
+ * Note: no GLchan version of this function.
+ */
+static void FETCH(f_z32)( const struct gl_texture_image *texImage,
+                          GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[0] = src[0] * (1.0F / 0xffffffff);
+}
+
+#if DIM == 3
+static void store_texel_z32(struct gl_texture_image *texImage,
+                            GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLuint *depth = (const GLuint *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   dst[0] = *depth;
+}
+#endif
+
+
+/* MESA_FORMAT_Z16 ***********************************************************/
+
+/* Fetch depth texel from 1D, 2D or 3D 16-bit depth texture,
+ * returning 1 GLfloat.
+ * Note: no GLchan version of this function.
+ */
+static void FETCH(f_z16)(const struct gl_texture_image *texImage,
+                         GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   texel[0] = src[0] * (1.0F / 65535.0F);
+}
+
+#if DIM == 3
+static void store_texel_z16(struct gl_texture_image *texImage,
+                            GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLushort *depth = (const GLushort *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   dst[0] = *depth;
+}
+#endif
+
+
+/* MESA_FORMAT_RGBA_F32 ******************************************************/
+
+/* Fetch texel from 1D, 2D or 3D RGBA_FLOAT32 texture, returning 4 GLfloats.
+ */
+static void FETCH(f_rgba_f32)( const struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 4);
+   texel[RCOMP] = src[0];
+   texel[GCOMP] = src[1];
+   texel[BCOMP] = src[2];
+   texel[ACOMP] = src[3];
+}
+
+#if DIM == 3
+static void store_texel_rgba_f32(struct gl_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *depth = (const GLfloat *) texel;
+   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 4);
+   dst[0] = depth[RCOMP];
+   dst[1] = depth[GCOMP];
+   dst[2] = depth[BCOMP];
+   dst[3] = depth[ACOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_RGBA_F16 ******************************************************/
+
+/* Fetch texel from 1D, 2D or 3D RGBA_FLOAT16 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_rgba_f16)( const struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 4);
+   texel[RCOMP] = _mesa_half_to_float(src[0]);
+   texel[GCOMP] = _mesa_half_to_float(src[1]);
+   texel[BCOMP] = _mesa_half_to_float(src[2]);
+   texel[ACOMP] = _mesa_half_to_float(src[3]);
+}
+
+#if DIM == 3
+static void store_texel_rgba_f16(struct gl_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *src = (const GLfloat *) texel;
+   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 4);
+   dst[0] = _mesa_float_to_half(src[RCOMP]);
+   dst[1] = _mesa_float_to_half(src[GCOMP]);
+   dst[2] = _mesa_float_to_half(src[BCOMP]);
+   dst[3] = _mesa_float_to_half(src[ACOMP]);
+}
+#endif
+
+/* MESA_FORMAT_RGB_F32 *******************************************************/
+
+/* Fetch texel from 1D, 2D or 3D RGB_FLOAT32 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_rgb_f32)( const struct gl_texture_image *texImage,
+                              GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 3);
+   texel[RCOMP] = src[0];
+   texel[GCOMP] = src[1];
+   texel[BCOMP] = src[2];
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rgb_f32(struct gl_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *src = (const GLfloat *) texel;
+   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 3);
+   dst[0] = src[RCOMP];
+   dst[1] = src[GCOMP];
+   dst[2] = src[BCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_RGB_F16 *******************************************************/
+
+/* Fetch texel from 1D, 2D or 3D RGB_FLOAT16 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_rgb_f16)( const struct gl_texture_image *texImage,
+                              GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 3);
+   texel[RCOMP] = _mesa_half_to_float(src[0]);
+   texel[GCOMP] = _mesa_half_to_float(src[1]);
+   texel[BCOMP] = _mesa_half_to_float(src[2]);
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rgb_f16(struct gl_texture_image *texImage,
+                                GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *src = (const GLfloat *) texel;
+   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 3);
+   dst[0] = _mesa_float_to_half(src[RCOMP]);
+   dst[1] = _mesa_float_to_half(src[GCOMP]);
+   dst[2] = _mesa_float_to_half(src[BCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_ALPHA_F32 *****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D ALPHA_FLOAT32 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_alpha_f32)( const struct gl_texture_image *texImage,
+                              GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = src[0];
+}
+
+#if DIM == 3
+static void store_texel_alpha_f32(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
+   dst[0] = rgba[ACOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_ALPHA_F32 *****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D ALPHA_FLOAT16 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_alpha_f16)( const struct gl_texture_image *texImage,
+                              GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = _mesa_half_to_float(src[0]);
+}
+
+#if DIM == 3
+static void store_texel_alpha_f16(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
+   dst[0] = _mesa_float_to_half(rgba[ACOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_LUMINANCE_F32 *************************************************/
+
+/* Fetch texel from 1D, 2D or 3D LUMINANCE_FLOAT32 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_luminance_f32)( const struct gl_texture_image *texImage,
+                                    GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = src[0];
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_luminance_f32(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
+   dst[0] = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_LUMINANCE_F16 *************************************************/
+
+/* Fetch texel from 1D, 2D or 3D LUMINANCE_FLOAT16 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_luminance_f16)( const struct gl_texture_image *texImage,
+                                    GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = _mesa_half_to_float(src[0]);
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_luminance_f16(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
+   dst[0] = _mesa_float_to_half(rgba[RCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_LUMINANCE_ALPHA_F32 *******************************************/
+
+/* Fetch texel from 1D, 2D or 3D LUMINANCE_ALPHA_FLOAT32 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_luminance_alpha_f32)( const struct gl_texture_image *texImage,
+                                    GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = src[0];
+   texel[ACOMP] = src[1];
+}
+
+#if DIM == 3
+static void store_texel_luminance_alpha_f32(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[ACOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_LUMINANCE_ALPHA_F16 *******************************************/
+
+/* Fetch texel from 1D, 2D or 3D LUMINANCE_ALPHA_FLOAT16 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_luminance_alpha_f16)( const struct gl_texture_image *texImage,
+                                    GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = _mesa_half_to_float(src[0]);
+   texel[ACOMP] = _mesa_half_to_float(src[1]);
+}
+
+#if DIM == 3
+static void store_texel_luminance_alpha_f16(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);
+   dst[0] = _mesa_float_to_half(rgba[RCOMP]);
+   dst[1] = _mesa_float_to_half(rgba[ACOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_INTENSITY_F32 *************************************************/
+
+/* Fetch texel from 1D, 2D or 3D INTENSITY_FLOAT32 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_intensity_f32)( const struct gl_texture_image *texImage,
+                                    GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] =
+   texel[ACOMP] = src[0];
+}
+
+#if DIM == 3
+static void store_texel_intensity_f32(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
+   dst[0] = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_INTENSITY_F16 *************************************************/
+
+/* Fetch texel from 1D, 2D or 3D INTENSITY_FLOAT16 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_intensity_f16)( const struct gl_texture_image *texImage,
+                                    GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] =
+   texel[ACOMP] = _mesa_half_to_float(src[0]);
+}
+
+#if DIM == 3
+static void store_texel_intensity_f16(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
+   dst[0] = _mesa_float_to_half(rgba[RCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_R_FLOAT32 *****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D R_FLOAT32 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_r_f32)( const struct gl_texture_image *texImage,
+                            GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
+   texel[RCOMP] = src[0];
+   texel[GCOMP] = 0.0F;
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_r_f32(struct gl_texture_image *texImage,
+                              GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
+   dst[0] = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_R_FLOAT16 *****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D R_FLOAT16 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_r_f16)( const struct gl_texture_image *texImage,
+                            GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
+   texel[RCOMP] = _mesa_half_to_float(src[0]);
+   texel[GCOMP] = 0.0F;
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_r_f16(struct gl_texture_image *texImage,
+                              GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
+   dst[0] = _mesa_float_to_half(rgba[RCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_RG_FLOAT32 ****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D RG_FLOAT32 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_rg_f32)( const struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
+   texel[RCOMP] = src[0];
+   texel[GCOMP] = src[1];
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rg_f32(struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[GCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_RG_FLOAT16 ****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D RG_FLOAT16 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_rg_f16)( const struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);
+   texel[RCOMP] = _mesa_half_to_float(src[0]);
+   texel[GCOMP] = _mesa_half_to_float(src[1]);
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rg_f16(struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);
+   dst[0] = _mesa_float_to_half(rgba[RCOMP]);
+   dst[1] = _mesa_float_to_half(rgba[GCOMP]);
+}
+#endif
+
+
+/*
+ * Begin Hardware formats
+ */
+
+/* MESA_FORMAT_RGBA8888 ******************************************************/
+
+/* Fetch texel from 1D, 2D or 3D rgba8888 texture, return 4 GLfloats */
+static void FETCH(f_rgba8888)( const struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 24)        );
+   texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
+   texel[BCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );
+   texel[ACOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );
+}
+
+
+
+#if DIM == 3
+static void store_texel_rgba8888(struct gl_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_8888(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_RGBA888_REV ***************************************************/
+
+/* Fetch texel from 1D, 2D or 3D abgr8888 texture, return 4 GLchans */
+static void FETCH(f_rgba8888_rev)( const struct gl_texture_image *texImage,
+                                   GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );
+   texel[GCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );
+   texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
+   texel[ACOMP] = UBYTE_TO_FLOAT( (s >> 24)        );
+}
+
+#if DIM == 3
+static void store_texel_rgba8888_rev(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_8888_REV(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_ARGB8888 ******************************************************/
+
+/* Fetch texel from 1D, 2D or 3D argb8888 texture, return 4 GLchans */
+static void FETCH(f_argb8888)( const struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
+   texel[GCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );
+   texel[BCOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );
+   texel[ACOMP] = UBYTE_TO_FLOAT( (s >> 24)        );
+}
+
+#if DIM == 3
+static void store_texel_argb8888(struct gl_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_8888(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_ARGB8888_REV **************************************************/
+
+/* Fetch texel from 1D, 2D or 3D argb8888_rev texture, return 4 GLfloats */
+static void FETCH(f_argb8888_rev)( const struct gl_texture_image *texImage,
+                                   GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );
+   texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
+   texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 24)        );
+   texel[ACOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );
+}
+
+#if DIM == 3
+static void store_texel_argb8888_rev(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_8888(rgba[BCOMP], rgba[GCOMP], rgba[RCOMP], rgba[ACOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_XRGB8888 ******************************************************/
+
+/* Fetch texel from 1D, 2D or 3D xrgb8888 texture, return 4 GLchans */
+static void FETCH(f_xrgb8888)( const struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
+   texel[GCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );
+   texel[BCOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );
+   texel[ACOMP] = 1.0f;
+}
+
+#if DIM == 3
+static void store_texel_xrgb8888(struct gl_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_8888(0xff, rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_XRGB8888_REV **************************************************/
+
+/* Fetch texel from 1D, 2D or 3D xrgb8888_rev texture, return 4 GLfloats */
+static void FETCH(f_xrgb8888_rev)( const struct gl_texture_image *texImage,
+                                   GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );
+   texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
+   texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 24)        );
+   texel[ACOMP] = 1.0f;
+}
+
+#if DIM == 3
+static void store_texel_xrgb8888_rev(struct gl_texture_image *texImage,
+                                     GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_8888(rgba[BCOMP], rgba[GCOMP], rgba[RCOMP], 0xff);
+}
+#endif
+
+
+/* MESA_FORMAT_RGB888 ********************************************************/
+
+/* Fetch texel from 1D, 2D or 3D rgb888 texture, return 4 GLchans */
+static void FETCH(f_rgb888)( const struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);
+   texel[RCOMP] = UBYTE_TO_FLOAT( src[2] );
+   texel[GCOMP] = UBYTE_TO_FLOAT( src[1] );
+   texel[BCOMP] = UBYTE_TO_FLOAT( src[0] );
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rgb888(struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);
+   dst[0] = rgba[BCOMP];
+   dst[1] = rgba[GCOMP];
+   dst[2] = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_BGR888 ********************************************************/
+
+/* Fetch texel from 1D, 2D or 3D bgr888 texture, return 4 GLchans */
+static void FETCH(f_bgr888)( const struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);
+   texel[RCOMP] = UBYTE_TO_FLOAT( src[0] );
+   texel[GCOMP] = UBYTE_TO_FLOAT( src[1] );
+   texel[BCOMP] = UBYTE_TO_FLOAT( src[2] );
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_bgr888(struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[GCOMP];
+   dst[2] = rgba[BCOMP];
+}
+#endif
+
+
+/* use color expansion like (g << 2) | (g >> 4) (does somewhat random rounding)
+   instead of slow (g << 2) * 255 / 252 (always rounds down) */
+
+/* MESA_FORMAT_RGB565 ********************************************************/
+
+/* Fetch texel from 1D, 2D or 3D rgb565 texture, return 4 GLchans */
+static void FETCH(f_rgb565)( const struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   const GLushort s = *src;
+   texel[RCOMP] = ((s >> 11) & 0x1f) * (1.0F / 31.0F);
+   texel[GCOMP] = ((s >> 5 ) & 0x3f) * (1.0F / 63.0F);
+   texel[BCOMP] = ((s      ) & 0x1f) * (1.0F / 31.0F);
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rgb565(struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_565(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_RGB565_REV ****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D rgb565_rev texture, return 4 GLchans */
+static void FETCH(f_rgb565_rev)( const struct gl_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   const GLushort s = (*src >> 8) | (*src << 8); /* byte swap */
+   texel[RCOMP] = UBYTE_TO_FLOAT( ((s >> 8) & 0xf8) | ((s >> 13) & 0x7) );
+   texel[GCOMP] = UBYTE_TO_FLOAT( ((s >> 3) & 0xfc) | ((s >>  9) & 0x3) );
+   texel[BCOMP] = UBYTE_TO_FLOAT( ((s << 3) & 0xf8) | ((s >>  2) & 0x7) );
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rgb565_rev(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_565(rgba[BCOMP], rgba[GCOMP], rgba[RCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_ARGB4444 ******************************************************/
+
+/* Fetch texel from 1D, 2D or 3D argb444 texture, return 4 GLchans */
+static void FETCH(f_argb4444)( const struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   const GLushort s = *src;
+   texel[RCOMP] = ((s >>  8) & 0xf) * (1.0F / 15.0F);
+   texel[GCOMP] = ((s >>  4) & 0xf) * (1.0F / 15.0F);
+   texel[BCOMP] = ((s      ) & 0xf) * (1.0F / 15.0F);
+   texel[ACOMP] = ((s >> 12) & 0xf) * (1.0F / 15.0F);
+}
+
+#if DIM == 3
+static void store_texel_argb4444(struct gl_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_4444(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_ARGB4444_REV **************************************************/
+
+/* Fetch texel from 1D, 2D or 3D argb4444_rev texture, return 4 GLchans */
+static void FETCH(f_argb4444_rev)( const struct gl_texture_image *texImage,
+                                   GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   texel[RCOMP] = ((s      ) & 0xf) * (1.0F / 15.0F);
+   texel[GCOMP] = ((s >> 12) & 0xf) * (1.0F / 15.0F);
+   texel[BCOMP] = ((s >>  8) & 0xf) * (1.0F / 15.0F);
+   texel[ACOMP] = ((s >>  4) & 0xf) * (1.0F / 15.0F);
+}
+
+#if DIM == 3
+static void store_texel_argb4444_rev(struct gl_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_4444(rgba[ACOMP], rgba[BCOMP], rgba[GCOMP], rgba[RCOMP]);
+}
+#endif
+
+/* MESA_FORMAT_RGBA5551 ******************************************************/
+
+/* Fetch texel from 1D, 2D or 3D argb1555 texture, return 4 GLchans */
+static void FETCH(f_rgba5551)( const struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   const GLushort s = *src;
+   texel[RCOMP] = ((s >> 11) & 0x1f) * (1.0F / 31.0F);
+   texel[GCOMP] = ((s >>  6) & 0x1f) * (1.0F / 31.0F);
+   texel[BCOMP] = ((s >>  1) & 0x1f) * (1.0F / 31.0F);
+   texel[ACOMP] = ((s      ) & 0x01) * 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rgba5551(struct gl_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_5551(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);
+}
+#endif
+
+/* MESA_FORMAT_ARGB1555 ******************************************************/
+
+/* Fetch texel from 1D, 2D or 3D argb1555 texture, return 4 GLchans */
+static void FETCH(f_argb1555)( const struct gl_texture_image *texImage,
+			     GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   const GLushort s = *src;
+   texel[RCOMP] = ((s >> 10) & 0x1f) * (1.0F / 31.0F);
+   texel[GCOMP] = ((s >>  5) & 0x1f) * (1.0F / 31.0F);
+   texel[BCOMP] = ((s >>  0) & 0x1f) * (1.0F / 31.0F);
+   texel[ACOMP] = ((s >> 15) & 0x01) * 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_argb1555(struct gl_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_1555(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_ARGB1555_REV **************************************************/
+
+/* Fetch texel from 1D, 2D or 3D argb1555_rev texture, return 4 GLchans */
+static void FETCH(f_argb1555_rev)( const struct gl_texture_image *texImage,
+                                   GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   const GLushort s = (*src << 8) | (*src >> 8); /* byteswap */
+   texel[RCOMP] = UBYTE_TO_FLOAT( ((s >>  7) & 0xf8) | ((s >> 12) & 0x7) );
+   texel[GCOMP] = UBYTE_TO_FLOAT( ((s >>  2) & 0xf8) | ((s >>  7) & 0x7) );
+   texel[BCOMP] = UBYTE_TO_FLOAT( ((s <<  3) & 0xf8) | ((s >>  2) & 0x7) );
+   texel[ACOMP] = UBYTE_TO_FLOAT( ((s >> 15) & 0x01) * 255 );
+}
+
+#if DIM == 3
+static void store_texel_argb1555_rev(struct gl_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_1555_REV(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_ARGB2101010 ***************************************************/
+
+/* Fetch texel from 1D, 2D or 3D argb2101010 texture, return 4 GLchans */
+static void FETCH(f_argb2101010)( const struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   const GLuint s = *src;
+   texel[RCOMP] = ((s >> 20) & 0x3ff) * (1.0F / 1023.0F);
+   texel[GCOMP] = ((s >> 10) & 0x3ff) * (1.0F / 1023.0F);
+   texel[BCOMP] = ((s >>  0) & 0x3ff) * (1.0F / 1023.0F);
+   texel[ACOMP] = ((s >> 30) & 0x03) * (1.0F / 3.0F);
+}
+
+#if DIM == 3
+static void store_texel_argb2101010(struct gl_texture_image *texImage,
+                                    GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_2101010_UB(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_RG88 **********************************************************/
+
+/* Fetch texel from 1D, 2D or 3D rg88 texture, return 4 GLchans */
+static void FETCH(f_rg88)( const struct gl_texture_image *texImage,
+                           GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   texel[RCOMP] = UBYTE_TO_FLOAT( s & 0xff );
+   texel[GCOMP] = UBYTE_TO_FLOAT( s >> 8 );
+   texel[BCOMP] = 0.0;
+   texel[ACOMP] = 1.0;
+}
+
+#if DIM == 3
+static void store_texel_rg88(struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_88(rgba[RCOMP], rgba[GCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_RG88_REV ******************************************************/
+
+/* Fetch texel from 1D, 2D or 3D rg88_rev texture, return 4 GLchans */
+static void FETCH(f_rg88_rev)( const struct gl_texture_image *texImage,
+                           GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   texel[RCOMP] = UBYTE_TO_FLOAT( s & 0xff );
+   texel[GCOMP] = UBYTE_TO_FLOAT( s >> 8 );
+   texel[BCOMP] = 0.0;
+   texel[ACOMP] = 1.0;
+}
+
+#if DIM == 3
+static void store_texel_rg88_rev(struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_88(rgba[GCOMP], rgba[RCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_AL44 **********************************************************/
+
+/* Fetch texel from 1D, 2D or 3D al44 texture, return 4 GLchans */
+static void FETCH(f_al44)( const struct gl_texture_image *texImage,
+                           GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLubyte s = *TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = (s & 0xf) * (1.0F / 15.0F);
+   texel[ACOMP] = ((s >> 4) & 0xf) * (1.0F / 15.0F);
+}
+
+#if DIM == 3
+static void store_texel_al44(struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_44(rgba[ACOMP], rgba[RCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_AL88 **********************************************************/
+
+/* Fetch texel from 1D, 2D or 3D al88 texture, return 4 GLchans */
+static void FETCH(f_al88)( const struct gl_texture_image *texImage,
+                           GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   texel[RCOMP] = 
+   texel[GCOMP] = 
+   texel[BCOMP] = UBYTE_TO_FLOAT( s & 0xff );
+   texel[ACOMP] = UBYTE_TO_FLOAT( s >> 8 );
+}
+
+#if DIM == 3
+static void store_texel_al88(struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_88(rgba[ACOMP], rgba[RCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_R8 ************************************************************/
+
+/* Fetch texel from 1D, 2D or 3D rg88 texture, return 4 GLchans */
+static void FETCH(f_r8)(const struct gl_texture_image *texImage,
+			GLint i, GLint j, GLint k, GLfloat *texel)
+{
+   const GLubyte s = *TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   texel[RCOMP] = UBYTE_TO_FLOAT(s);
+   texel[GCOMP] = 0.0;
+   texel[BCOMP] = 0.0;
+   texel[ACOMP] = 1.0;
+}
+
+#if DIM == 3
+static void store_texel_r8(struct gl_texture_image *texImage,
+			   GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   *dst = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_R16 ***********************************************************/
+
+/* Fetch texel from 1D, 2D or 3D r16 texture, return 4 GLchans */
+static void FETCH(f_r16)(const struct gl_texture_image *texImage,
+			GLint i, GLint j, GLint k, GLfloat *texel)
+{
+   const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   texel[RCOMP] = USHORT_TO_FLOAT(s);
+   texel[GCOMP] = 0.0;
+   texel[BCOMP] = 0.0;
+   texel[ACOMP] = 1.0;
+}
+
+#if DIM == 3
+static void store_texel_r16(struct gl_texture_image *texImage,
+			    GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLushort *rgba = (const GLushort *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_AL88_REV ******************************************************/
+
+/* Fetch texel from 1D, 2D or 3D al88_rev texture, return 4 GLchans */
+static void FETCH(f_al88_rev)( const struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort s = *TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   texel[RCOMP] = 
+   texel[GCOMP] = 
+   texel[BCOMP] = UBYTE_TO_FLOAT( s >> 8 );
+   texel[ACOMP] = UBYTE_TO_FLOAT( s & 0xff );
+}
+
+#if DIM == 3
+static void store_texel_al88_rev(struct gl_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_88(rgba[RCOMP], rgba[ACOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_RG1616 ********************************************************/
+
+/* Fetch texel from 1D, 2D or 3D rg1616 texture, return 4 GLchans */
+static void FETCH(f_rg1616)( const struct gl_texture_image *texImage,
+                           GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] = USHORT_TO_FLOAT( s & 0xffff );
+   texel[GCOMP] = USHORT_TO_FLOAT( s >> 16 );
+   texel[BCOMP] = 0.0;
+   texel[ACOMP] = 1.0;
+}
+
+#if DIM == 3
+static void store_texel_rg1616(struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_1616(rgba[RCOMP], rgba[GCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_RG1616_REV ****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D rg1616_rev texture, return 4 GLchans */
+static void FETCH(f_rg1616_rev)( const struct gl_texture_image *texImage,
+                           GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] = USHORT_TO_FLOAT( s >> 16 );
+   texel[GCOMP] = USHORT_TO_FLOAT( s & 0xffff );
+   texel[BCOMP] = 0.0;
+   texel[ACOMP] = 1.0;
+}
+
+#if DIM == 3
+static void store_texel_rg1616_rev(struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_1616(rgba[GCOMP], rgba[RCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_AL1616 ********************************************************/
+
+/* Fetch texel from 1D, 2D or 3D al1616 texture, return 4 GLchans */
+static void FETCH(f_al1616)( const struct gl_texture_image *texImage,
+			     GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = USHORT_TO_FLOAT( s & 0xffff );
+   texel[ACOMP] = USHORT_TO_FLOAT( s >> 16 );
+}
+
+#if DIM == 3
+static void store_texel_al1616(struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLushort *rgba = (const GLushort *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_1616(rgba[ACOMP], rgba[RCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_AL1616_REV ****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D al1616_rev texture, return 4 GLchans */
+static void FETCH(f_al1616_rev)( const struct gl_texture_image *texImage,
+				 GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = USHORT_TO_FLOAT( s >> 16 );
+   texel[ACOMP] = USHORT_TO_FLOAT( s & 0xffff );
+}
+
+#if DIM == 3
+static void store_texel_al1616_rev(struct gl_texture_image *texImage,
+				   GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLushort *rgba = (const GLushort *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_1616(rgba[RCOMP], rgba[ACOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_RGB332 ********************************************************/
+
+/* Fetch texel from 1D, 2D or 3D rgb332 texture, return 4 GLchans */
+static void FETCH(f_rgb332)( const struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   const GLubyte s = *src;
+   texel[RCOMP] = ((s >> 5) & 0x7) * (1.0F / 7.0F);
+   texel[GCOMP] = ((s >> 2) & 0x7) * (1.0F / 7.0F);
+   texel[BCOMP] = ((s     ) & 0x3) * (1.0F / 3.0F);
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rgb332(struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_332(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_A8 ************************************************************/
+
+/* Fetch texel from 1D, 2D or 3D a8 texture, return 4 GLchans */
+static void FETCH(f_a8)( const struct gl_texture_image *texImage,
+                         GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = UBYTE_TO_FLOAT( src[0] );
+}
+
+#if DIM == 3
+static void store_texel_a8(struct gl_texture_image *texImage,
+                           GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   *dst = rgba[ACOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_A16 ************************************************************/
+
+/* Fetch texel from 1D, 2D or 3D a8 texture, return 4 GLchans */
+static void FETCH(f_a16)( const struct gl_texture_image *texImage,
+                          GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = USHORT_TO_FLOAT( src[0] );
+}
+
+#if DIM == 3
+static void store_texel_a16(struct gl_texture_image *texImage,
+                            GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLushort *rgba = (const GLushort *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = rgba[ACOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_L8 ************************************************************/
+
+/* Fetch texel from 1D, 2D or 3D l8 texture, return 4 GLchans */
+static void FETCH(f_l8)( const struct gl_texture_image *texImage,
+                         GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = UBYTE_TO_FLOAT( src[0] );
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_l8(struct gl_texture_image *texImage,
+                           GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   *dst = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_L16 ***********************************************************/
+
+/* Fetch texel from 1D, 2D or 3D l16 texture, return 4 GLchans */
+static void FETCH(f_l16)( const struct gl_texture_image *texImage,
+                          GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = USHORT_TO_FLOAT( src[0] );
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_l16(struct gl_texture_image *texImage,
+                            GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLushort *rgba = (const GLushort *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_I8 ************************************************************/
+
+/* Fetch texel from 1D, 2D or 3D i8 texture, return 4 GLchans */
+static void FETCH(f_i8)( const struct gl_texture_image *texImage,
+                         GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] =
+   texel[ACOMP] = UBYTE_TO_FLOAT( src[0] );
+}
+
+#if DIM == 3
+static void store_texel_i8(struct gl_texture_image *texImage,
+                           GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   *dst = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_I16 ***********************************************************/
+
+/* Fetch texel from 1D, 2D or 3D i16 texture, return 4 GLchans */
+static void FETCH(f_i16)( const struct gl_texture_image *texImage,
+                          GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] =
+   texel[ACOMP] = USHORT_TO_FLOAT( src[0] );
+}
+
+#if DIM == 3
+static void store_texel_i16(struct gl_texture_image *texImage,
+                            GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLushort *rgba = (const GLushort *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_CI8 ***********************************************************/
+
+/* Fetch CI texel from 1D, 2D or 3D ci8 texture, lookup the index in a
+ * color table, and return 4 GLchans.
+ */
+static void FETCH(f_ci8)( const struct gl_texture_image *texImage,
+                          GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   const struct gl_color_table *palette;
+   GLuint index;
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (ctx->Texture.SharedPalette) {
+      palette = &ctx->Texture.Palette;
+   }
+   else {
+      palette = &texImage->TexObject->Palette;
+   }
+   if (palette->Size == 0)
+      return; /* undefined results */
+
+   /* Mask the index against size of palette to avoid going out of bounds */
+   index = (*src) & (palette->Size - 1);
+
+   {
+      const GLfloat *table = palette->TableF;
+      switch (palette->_BaseFormat) {
+      case GL_ALPHA:
+         texel[RCOMP] =
+         texel[GCOMP] =
+         texel[BCOMP] = 0.0F;
+         texel[ACOMP] = table[index];
+         break;
+      case GL_LUMINANCE:
+         texel[RCOMP] =
+         texel[GCOMP] =
+         texel[BCOMP] = table[index];
+         texel[ACOMP] = 1.0F;
+         break;
+      case GL_INTENSITY:
+         texel[RCOMP] =
+         texel[GCOMP] =
+         texel[BCOMP] =
+         texel[ACOMP] = table[index];
+         break;
+      case GL_LUMINANCE_ALPHA:
+         texel[RCOMP] =
+         texel[GCOMP] =
+         texel[BCOMP] = table[index * 2 + 0];
+         texel[ACOMP] = table[index * 2 + 1];
+         break;
+      case GL_RGB:
+         texel[RCOMP] = table[index * 3 + 0];
+         texel[GCOMP] = table[index * 3 + 1];
+         texel[BCOMP] = table[index * 3 + 2];
+         texel[ACOMP] = 1.0F;
+         break;
+      case GL_RGBA:
+         texel[RCOMP] = table[index * 4 + 0];
+         texel[GCOMP] = table[index * 4 + 1];
+         texel[BCOMP] = table[index * 4 + 2];
+         texel[ACOMP] = table[index * 4 + 3];
+         break;
+      default:
+         _mesa_problem(ctx, "Bad palette format in fetch_texel_ci8");
+         return;
+      }
+   }
+}
+
+#if DIM == 3
+static void store_texel_ci8(struct gl_texture_image *texImage,
+                            GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *index = (const GLubyte *) texel;
+   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   *dst = *index;
+}
+#endif
+
+
+/* Fetch texel from 1D, 2D or 3D srgb8 texture, return 4 GLfloats */
+/* Note: component order is same as for MESA_FORMAT_RGB888 */
+static void FETCH(srgb8)(const struct gl_texture_image *texImage,
+                         GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);
+   texel[RCOMP] = nonlinear_to_linear(src[2]);
+   texel[GCOMP] = nonlinear_to_linear(src[1]);
+   texel[BCOMP] = nonlinear_to_linear(src[0]);
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_srgb8(struct gl_texture_image *texImage,
+                              GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 3);
+   dst[0] = rgba[BCOMP]; /* no conversion */
+   dst[1] = rgba[GCOMP];
+   dst[2] = rgba[RCOMP];
+}
+#endif
+
+/* Fetch texel from 1D, 2D or 3D srgba8 texture, return 4 GLfloats */
+static void FETCH(srgba8)(const struct gl_texture_image *texImage,
+                          GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] = nonlinear_to_linear( (s >> 24) );
+   texel[GCOMP] = nonlinear_to_linear( (s >> 16) & 0xff );
+   texel[BCOMP] = nonlinear_to_linear( (s >>  8) & 0xff );
+   texel[ACOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff ); /* linear! */
+}
+
+#if DIM == 3
+static void store_texel_srgba8(struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_8888(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);
+}
+#endif
+
+/* Fetch texel from 1D, 2D or 3D sargb8 texture, return 4 GLfloats */
+static void FETCH(sargb8)(const struct gl_texture_image *texImage,
+                          GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] = nonlinear_to_linear( (s >> 16) & 0xff );
+   texel[GCOMP] = nonlinear_to_linear( (s >>  8) & 0xff );
+   texel[BCOMP] = nonlinear_to_linear( (s      ) & 0xff );
+   texel[ACOMP] = UBYTE_TO_FLOAT( (s >> 24) ); /* linear! */
+}
+
+#if DIM == 3
+static void store_texel_sargb8(struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_8888(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);
+}
+#endif
+
+/* Fetch texel from 1D, 2D or 3D sl8 texture, return 4 GLfloats */
+static void FETCH(sl8)(const struct gl_texture_image *texImage,
+                       GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   texel[RCOMP] = 
+   texel[GCOMP] = 
+   texel[BCOMP] = nonlinear_to_linear(src[0]);
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_sl8(struct gl_texture_image *texImage,
+                            GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 1);
+   dst[0] = rgba[RCOMP];
+}
+#endif
+
+/* Fetch texel from 1D, 2D or 3D sla8 texture, return 4 GLfloats */
+static void FETCH(sla8)(const struct gl_texture_image *texImage,
+                       GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 2);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = nonlinear_to_linear(src[0]);
+   texel[ACOMP] = UBYTE_TO_FLOAT(src[1]); /* linear */
+}
+
+#if DIM == 3
+static void store_texel_sla8(struct gl_texture_image *texImage,
+                            GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 2);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[ACOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_RGBA_INT8 **************************************************/
+
+static void
+FETCH(rgba_int8)(const struct gl_texture_image *texImage,
+                 GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLbyte *src = TEXEL_ADDR(GLbyte, texImage, i, j, k, 4);
+   texel[RCOMP] = (GLfloat) src[0];
+   texel[GCOMP] = (GLfloat) src[1];
+   texel[BCOMP] = (GLfloat) src[2];
+   texel[ACOMP] = (GLfloat) src[3];
+}
+
+#if DIM == 3
+static void
+store_texel_rgba_int8(struct gl_texture_image *texImage,
+                      GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLbyte *rgba = (const GLbyte *) texel;
+   GLbyte *dst = TEXEL_ADDR(GLbyte, texImage, i, j, k, 4);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[GCOMP];
+   dst[2] = rgba[BCOMP];
+   dst[3] = rgba[ACOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_RGBA_INT16 **************************************************/
+
+static void
+FETCH(rgba_int16)(const struct gl_texture_image *texImage,
+                  GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLshort *src = TEXEL_ADDR(GLshort, texImage, i, j, k, 4);
+   texel[RCOMP] = (GLfloat) src[0];
+   texel[GCOMP] = (GLfloat) src[1];
+   texel[BCOMP] = (GLfloat) src[2];
+   texel[ACOMP] = (GLfloat) src[3];
+}
+
+#if DIM == 3
+static void
+store_texel_rgba_int16(struct gl_texture_image *texImage,
+                       GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLshort *rgba = (const GLshort *) texel;
+   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 4);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[GCOMP];
+   dst[2] = rgba[BCOMP];
+   dst[3] = rgba[ACOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_RGBA_INT32 **************************************************/
+
+static void
+FETCH(rgba_int32)(const struct gl_texture_image *texImage,
+                  GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLint *src = TEXEL_ADDR(GLint, texImage, i, j, k, 4);
+   texel[RCOMP] = (GLfloat) src[0];
+   texel[GCOMP] = (GLfloat) src[1];
+   texel[BCOMP] = (GLfloat) src[2];
+   texel[ACOMP] = (GLfloat) src[3];
+}
+
+#if DIM == 3
+static void
+store_texel_rgba_int32(struct gl_texture_image *texImage,
+                       GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLint *rgba = (const GLint *) texel;
+   GLint *dst = TEXEL_ADDR(GLint, texImage, i, j, k, 4);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[GCOMP];
+   dst[2] = rgba[BCOMP];
+   dst[3] = rgba[ACOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_RGBA_UINT8 **************************************************/
+
+static void
+FETCH(rgba_uint8)(const struct gl_texture_image *texImage,
+                 GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLubyte *src = TEXEL_ADDR(GLubyte, texImage, i, j, k, 4);
+   texel[RCOMP] = (GLfloat) src[0];
+   texel[GCOMP] = (GLfloat) src[1];
+   texel[BCOMP] = (GLfloat) src[2];
+   texel[ACOMP] = (GLfloat) src[3];
+}
+
+#if DIM == 3
+static void
+store_texel_rgba_uint8(struct gl_texture_image *texImage,
+                      GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLubyte *dst = TEXEL_ADDR(GLubyte, texImage, i, j, k, 4);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[GCOMP];
+   dst[2] = rgba[BCOMP];
+   dst[3] = rgba[ACOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_RGBA_UINT16 **************************************************/
+
+static void
+FETCH(rgba_uint16)(const struct gl_texture_image *texImage,
+                  GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 4);
+   texel[RCOMP] = (GLfloat) src[0];
+   texel[GCOMP] = (GLfloat) src[1];
+   texel[BCOMP] = (GLfloat) src[2];
+   texel[ACOMP] = (GLfloat) src[3];
+}
+
+#if DIM == 3
+static void
+store_texel_rgba_uint16(struct gl_texture_image *texImage,
+                       GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLushort *rgba = (const GLushort *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 4);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[GCOMP];
+   dst[2] = rgba[BCOMP];
+   dst[3] = rgba[ACOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_RGBA_UINT32 **************************************************/
+
+static void
+FETCH(rgba_uint32)(const struct gl_texture_image *texImage,
+                  GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 4);
+   texel[RCOMP] = (GLfloat) src[0];
+   texel[GCOMP] = (GLfloat) src[1];
+   texel[BCOMP] = (GLfloat) src[2];
+   texel[ACOMP] = (GLfloat) src[3];
+}
+
+#if DIM == 3
+static void
+store_texel_rgba_uint32(struct gl_texture_image *texImage,
+                       GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLuint *rgba = (const GLuint *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 4);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[GCOMP];
+   dst[2] = rgba[BCOMP];
+   dst[3] = rgba[ACOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_DUDV8 ********************************************************/
+
+/* this format by definition produces 0,0,0,1 as rgba values,
+   however we'll return the dudv values as rg and fix up elsewhere */
+static void FETCH(dudv8)(const struct gl_texture_image *texImage,
+                         GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLbyte *src = TEXEL_ADDR(GLbyte, texImage, i, j, k, 2);
+   texel[RCOMP] = BYTE_TO_FLOAT(src[0]);
+   texel[GCOMP] = BYTE_TO_FLOAT(src[1]);
+   texel[BCOMP] = 0;
+   texel[ACOMP] = 0;
+}
+
+
+/* MESA_FORMAT_SIGNED_R8 ***********************************************/
+
+static void FETCH(signed_r8)( const struct gl_texture_image *texImage,
+                              GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLbyte s = *TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);
+   texel[RCOMP] = BYTE_TO_FLOAT_TEX( s );
+   texel[GCOMP] = 0.0F;
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_signed_r8(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLbyte *rgba = (const GLbyte *) texel;
+   GLbyte *dst = TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);
+   *dst = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_SIGNED_A8 ***********************************************/
+
+static void FETCH(signed_a8)( const struct gl_texture_image *texImage,
+                              GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLbyte s = *TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);
+   texel[RCOMP] = 0.0F;
+   texel[GCOMP] = 0.0F;
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = BYTE_TO_FLOAT_TEX( s );
+}
+
+#if DIM == 3
+static void store_texel_signed_a8(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLbyte *rgba = (const GLbyte *) texel;
+   GLbyte *dst = TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);
+   *dst = rgba[ACOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_SIGNED_L8 ***********************************************/
+
+static void FETCH(signed_l8)( const struct gl_texture_image *texImage,
+                              GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLbyte s = *TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = BYTE_TO_FLOAT_TEX( s );
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_signed_l8(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLbyte *rgba = (const GLbyte *) texel;
+   GLbyte *dst = TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);
+   *dst = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_SIGNED_I8 ***********************************************/
+
+static void FETCH(signed_i8)( const struct gl_texture_image *texImage,
+                              GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLbyte s = *TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] =
+   texel[ACOMP] = BYTE_TO_FLOAT_TEX( s );
+}
+
+#if DIM == 3
+static void store_texel_signed_i8(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLbyte *rgba = (const GLbyte *) texel;
+   GLbyte *dst = TEXEL_ADDR(GLbyte, texImage, i, j, k, 1);
+   *dst = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_SIGNED_RG88_REV ***********************************************/
+
+static void FETCH(signed_rg88_rev)( const struct gl_texture_image *texImage,
+                                    GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
+   texel[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s & 0xff) );
+   texel[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 8) );
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_signed_rg88_rev(struct gl_texture_image *texImage,
+                                        GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLbyte *rg = (const GLbyte *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   dst[0] = PACK_COLOR_88(rg[GCOMP], rg[RCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_SIGNED_AL88 ***********************************************/
+
+static void FETCH(signed_al88)( const struct gl_texture_image *texImage,
+                                GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s & 0xff) );
+   texel[ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 8) );
+}
+
+#if DIM == 3
+static void store_texel_signed_al88(struct gl_texture_image *texImage,
+                                    GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLbyte *rg = (const GLbyte *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   dst[0] = PACK_COLOR_88(rg[ACOMP], rg[RCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_SIGNED_RGBX8888 ***********************************************/
+
+static void FETCH(signed_rgbx8888)( const struct gl_texture_image *texImage,
+			            GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 24) );
+   texel[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 16) );
+   texel[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >>  8) );
+   texel[ACOMP] = 1.0f;
+}
+
+#if DIM == 3
+static void store_texel_signed_rgbx8888(struct gl_texture_image *texImage,
+                                        GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLbyte *rgba = (const GLbyte *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_8888(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], 255);
+}
+#endif
+
+
+/* MESA_FORMAT_SIGNED_RGBA8888 ***********************************************/
+
+static void FETCH(signed_rgba8888)( const struct gl_texture_image *texImage,
+			            GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 24) );
+   texel[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 16) );
+   texel[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >>  8) );
+   texel[ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s      ) );
+}
+
+#if DIM == 3
+static void store_texel_signed_rgba8888(struct gl_texture_image *texImage,
+                                        GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLbyte *rgba = (const GLbyte *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_8888(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);
+}
+#endif
+
+static void FETCH(signed_rgba8888_rev)( const struct gl_texture_image *texImage,
+                                        GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s      ) );
+   texel[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >>  8) );
+   texel[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 16) );
+   texel[ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 24) );
+}
+
+#if DIM == 3
+static void store_texel_signed_rgba8888_rev(struct gl_texture_image *texImage,
+                                            GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_8888_REV(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], rgba[ACOMP]);
+}
+#endif
+
+
+
+/* MESA_FORMAT_SIGNED_R16 ***********************************************/
+
+static void
+FETCH(signed_r16)(const struct gl_texture_image *texImage,
+                  GLint i, GLint j, GLint k, GLfloat *texel)
+{
+   const GLshort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
+   texel[RCOMP] = SHORT_TO_FLOAT_TEX( s );
+   texel[GCOMP] = 0.0F;
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void
+store_texel_signed_r16(struct gl_texture_image *texImage,
+                       GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLshort *rgba = (const GLshort *) texel;
+   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
+   *dst = rgba[0];
+}
+#endif
+
+
+/* MESA_FORMAT_SIGNED_A16 ***********************************************/
+
+static void
+FETCH(signed_a16)(const struct gl_texture_image *texImage,
+                  GLint i, GLint j, GLint k, GLfloat *texel)
+{
+   const GLshort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
+   texel[RCOMP] = 0.0F;
+   texel[GCOMP] = 0.0F;
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = SHORT_TO_FLOAT_TEX( s );
+}
+
+#if DIM == 3
+static void
+store_texel_signed_a16(struct gl_texture_image *texImage,
+                       GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLshort *rgba = (const GLshort *) texel;
+   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
+   *dst = rgba[ACOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_SIGNED_L16 ***********************************************/
+
+static void
+FETCH(signed_l16)(const struct gl_texture_image *texImage,
+                  GLint i, GLint j, GLint k, GLfloat *texel)
+{
+   const GLshort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = SHORT_TO_FLOAT_TEX( s );
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void
+store_texel_signed_l16(struct gl_texture_image *texImage,
+                       GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLshort *rgba = (const GLshort *) texel;
+   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
+   *dst = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_SIGNED_I16 ***********************************************/
+
+static void
+FETCH(signed_i16)(const struct gl_texture_image *texImage,
+                  GLint i, GLint j, GLint k, GLfloat *texel)
+{
+   const GLshort s = *TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] =
+   texel[ACOMP] = SHORT_TO_FLOAT_TEX( s );
+}
+
+#if DIM == 3
+static void
+store_texel_signed_i16(struct gl_texture_image *texImage,
+                       GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLshort *rgba = (const GLshort *) texel;
+   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 1);
+   *dst = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_SIGNED_RG1616 ***********************************************/
+
+static void
+FETCH(signed_rg1616)(const struct gl_texture_image *texImage,
+                    GLint i, GLint j, GLint k, GLfloat *texel)
+{
+   const GLshort *s = TEXEL_ADDR(GLshort, texImage, i, j, k, 2);
+   texel[RCOMP] = SHORT_TO_FLOAT_TEX( s[0] );
+   texel[GCOMP] = SHORT_TO_FLOAT_TEX( s[1] );
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void
+store_texel_signed_rg1616(struct gl_texture_image *texImage,
+                         GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLshort *rgba = (const GLshort *) texel;
+   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 2);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[GCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_SIGNED_AL1616 ***********************************************/
+
+static void
+FETCH(signed_al1616)(const struct gl_texture_image *texImage,
+                    GLint i, GLint j, GLint k, GLfloat *texel)
+{
+   const GLshort *s = TEXEL_ADDR(GLshort, texImage, i, j, k, 2);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] = SHORT_TO_FLOAT_TEX( s[0] );
+   texel[ACOMP] = SHORT_TO_FLOAT_TEX( s[1] );
+}
+
+#if DIM == 3
+static void
+store_texel_signed_al1616(struct gl_texture_image *texImage,
+                         GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLshort *rgba = (const GLshort *) texel;
+   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 2);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[ACOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_SIGNED_RGB_16 ***********************************************/
+
+static void 
+FETCH(signed_rgb_16)(const struct gl_texture_image *texImage,
+                     GLint i, GLint j, GLint k, GLfloat *texel)
+{
+   const GLshort *s = TEXEL_ADDR(GLshort, texImage, i, j, k, 3);
+   texel[RCOMP] = SHORT_TO_FLOAT_TEX( s[0] );
+   texel[GCOMP] = SHORT_TO_FLOAT_TEX( s[1] );
+   texel[BCOMP] = SHORT_TO_FLOAT_TEX( s[2] );
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void
+store_texel_signed_rgb_16(struct gl_texture_image *texImage,
+                          GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLshort *rgba = (const GLshort *) texel;
+   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 3);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[GCOMP];
+   dst[2] = rgba[BCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_SIGNED_RGBA_16 ***********************************************/
+
+static void
+FETCH(signed_rgba_16)(const struct gl_texture_image *texImage,
+                      GLint i, GLint j, GLint k, GLfloat *texel)
+{
+   const GLshort *s = TEXEL_ADDR(GLshort, texImage, i, j, k, 4);
+   texel[RCOMP] = SHORT_TO_FLOAT_TEX( s[0] );
+   texel[GCOMP] = SHORT_TO_FLOAT_TEX( s[1] );
+   texel[BCOMP] = SHORT_TO_FLOAT_TEX( s[2] );
+   texel[ACOMP] = SHORT_TO_FLOAT_TEX( s[3] );
+}
+
+#if DIM == 3
+static void
+store_texel_signed_rgba_16(struct gl_texture_image *texImage,
+                           GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLshort *rgba = (const GLshort *) texel;
+   GLshort *dst = TEXEL_ADDR(GLshort, texImage, i, j, k, 4);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[GCOMP];
+   dst[2] = rgba[BCOMP];
+   dst[3] = rgba[ACOMP];
+}
+#endif
+
+
+
+/* MESA_FORMAT_RGBA_16 ***********************************************/
+
+static void
+FETCH(rgba_16)(const struct gl_texture_image *texImage,
+               GLint i, GLint j, GLint k, GLfloat *texel)
+{
+   const GLushort *s = TEXEL_ADDR(GLushort, texImage, i, j, k, 4);
+   texel[RCOMP] = USHORT_TO_FLOAT( s[0] );
+   texel[GCOMP] = USHORT_TO_FLOAT( s[1] );
+   texel[BCOMP] = USHORT_TO_FLOAT( s[2] );
+   texel[ACOMP] = USHORT_TO_FLOAT( s[3] );
+}
+
+#if DIM == 3
+static void
+store_texel_rgba_16(struct gl_texture_image *texImage,
+                    GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLushort *rgba = (const GLushort *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 4);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[GCOMP];
+   dst[2] = rgba[BCOMP];
+   dst[3] = rgba[ACOMP];
+}
+#endif
+
+
+
+/* MESA_FORMAT_YCBCR *********************************************************/
+
+/* Fetch texel from 1D, 2D or 3D ycbcr texture, return 4 GLfloats.
+ * We convert YCbCr to RGB here.
+ */
+static void FETCH(f_ycbcr)( const struct gl_texture_image *texImage,
+                            GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort *src0 = TEXEL_ADDR(GLushort, texImage, (i & ~1), j, k, 1); /* even */
+   const GLushort *src1 = src0 + 1;                               /* odd */
+   const GLubyte y0 = (*src0 >> 8) & 0xff;  /* luminance */
+   const GLubyte cb = *src0 & 0xff;         /* chroma U */
+   const GLubyte y1 = (*src1 >> 8) & 0xff;  /* luminance */
+   const GLubyte cr = *src1 & 0xff;         /* chroma V */
+   const GLubyte y = (i & 1) ? y1 : y0;     /* choose even/odd luminance */
+   GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);
+   GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
+   GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);
+   r *= (1.0F / 255.0F);
+   g *= (1.0F / 255.0F);
+   b *= (1.0F / 255.0F);
+   texel[RCOMP] = CLAMP(r, 0.0F, 1.0F);
+   texel[GCOMP] = CLAMP(g, 0.0F, 1.0F);
+   texel[BCOMP] = CLAMP(b, 0.0F, 1.0F);
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_ycbcr(struct gl_texture_image *texImage,
+                              GLint i, GLint j, GLint k, const void *texel)
+{
+   (void) texImage;
+   (void) i;
+   (void) j;
+   (void) k;
+   (void) texel;
+   /* XXX to do */
+}
+#endif
+
+
+/* MESA_FORMAT_YCBCR_REV *****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D ycbcr_rev texture, return 4 GLfloats.
+ * We convert YCbCr to RGB here.
+ */
+static void FETCH(f_ycbcr_rev)( const struct gl_texture_image *texImage,
+                                GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort *src0 = TEXEL_ADDR(GLushort, texImage, (i & ~1), j, k, 1); /* even */
+   const GLushort *src1 = src0 + 1;                               /* odd */
+   const GLubyte y0 = *src0 & 0xff;         /* luminance */
+   const GLubyte cr = (*src0 >> 8) & 0xff;  /* chroma V */
+   const GLubyte y1 = *src1 & 0xff;         /* luminance */
+   const GLubyte cb = (*src1 >> 8) & 0xff;  /* chroma U */
+   const GLubyte y = (i & 1) ? y1 : y0;     /* choose even/odd luminance */
+   GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);
+   GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
+   GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);
+   r *= (1.0F / 255.0F);
+   g *= (1.0F / 255.0F);
+   b *= (1.0F / 255.0F);
+   texel[RCOMP] = CLAMP(r, 0.0F, 1.0F);
+   texel[GCOMP] = CLAMP(g, 0.0F, 1.0F);
+   texel[BCOMP] = CLAMP(b, 0.0F, 1.0F);
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_ycbcr_rev(struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, const void *texel)
+{
+   (void) texImage;
+   (void) i;
+   (void) j;
+   (void) k;
+   (void) texel;
+   /* XXX to do */
+}
+#endif
+
+
+/* MESA_TEXFORMAT_Z24_S8 ***************************************************/
+
+static void FETCH(f_z24_s8)( const struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   /* only return Z, not stencil data */
+   const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   const GLfloat scale = 1.0F / (GLfloat) 0xffffff;
+   texel[0] = ((*src) >> 8) * scale;
+   ASSERT(texImage->TexFormat == MESA_FORMAT_Z24_S8);
+   ASSERT(texel[0] >= 0.0F);
+   ASSERT(texel[0] <= 1.0F);
+}
+
+#if DIM == 3
+static void store_texel_z24_s8(struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, const void *texel)
+{
+   /* only store Z, not stencil */
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   GLfloat depth = *((GLfloat *) texel);
+   GLuint zi = ((GLuint) (depth * 0xffffff)) << 8;
+   *dst = zi | (*dst & 0xff);
+}
+#endif
+
+
+/* MESA_TEXFORMAT_S8_Z24 ***************************************************/
+
+static void FETCH(f_s8_z24)( const struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   /* only return Z, not stencil data */
+   const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   const GLfloat scale = 1.0F / (GLfloat) 0xffffff;
+   texel[0] = ((*src) & 0x00ffffff) * scale;
+   ASSERT(texImage->TexFormat == MESA_FORMAT_S8_Z24);
+   ASSERT(texel[0] >= 0.0F);
+   ASSERT(texel[0] <= 1.0F);
+}
+
+#if DIM == 3
+static void store_texel_s8_z24(struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, const void *texel)
+{
+   /* only store Z, not stencil */
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   GLfloat depth = *((GLfloat *) texel);
+   GLuint zi = (GLuint) (depth * 0xffffff);
+   *dst = zi | (*dst & 0xff000000);
+}
+#endif
+
+
+/* MESA_FORMAT_RGB9_E5 ******************************************************/
+
+static void FETCH(rgb9_e5)( const struct gl_texture_image *texImage,
+                            GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   rgb9e5_to_float3(*src, texel);
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rgb9_e5(struct gl_texture_image *texImage,
+                                GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *src = (const GLfloat *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = float3_to_rgb9e5(src);
+}
+#endif
+
+
+/* MESA_FORMAT_R11_G11_B10_FLOAT *********************************************/
+
+static void FETCH(r11_g11_b10f)( const struct gl_texture_image *texImage,
+                                 GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   r11g11b10f_to_float3(*src, texel);
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_r11_g11_b10f(struct gl_texture_image *texImage,
+                                     GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *src = (const GLfloat *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = float3_to_r11g11b10f(src);
+}
+#endif
+
+
+/* MESA_FORMAT_Z32_FLOAT_X24S8 ***********************************************/
+
+static void FETCH(z32f_x24s8)(const struct gl_texture_image *texImage,
+			      GLint i, GLint j, GLint k, GLfloat *texel)
+{
+   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
+   texel[RCOMP] = src[0];
+   texel[GCOMP] = 0.0F;
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_z32f_x24s8(struct gl_texture_image *texImage,
+                                   GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *src = (const GLfloat *) texel;
+   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
+   dst[0] = src[0];
+}
+#endif
+
+
+#undef TEXEL_ADDR
+#undef DIM
+#undef FETCH
diff --git a/mesalib/src/mesa/main/texformat.c b/mesalib/src/mesa/main/texformat.c
index 8cbb021d8..c919a74e0 100644
--- a/mesalib/src/mesa/main/texformat.c
+++ b/mesalib/src/mesa/main/texformat.c
@@ -416,6 +416,19 @@ _mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat,
       }
    }
 
+   if (ctx->Extensions.ARB_depth_buffer_float) {
+      switch (internalFormat) {
+         case GL_DEPTH_COMPONENT32F:
+            ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT]);
+            return MESA_FORMAT_Z32_FLOAT;
+         case GL_DEPTH32F_STENCIL8:
+            ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT_X24S8]);
+            return MESA_FORMAT_Z32_FLOAT_X24S8;
+         default:
+            ; /* fallthrough */
+      }
+   }
+
    if (ctx->Extensions.ATI_envmap_bumpmap) {
       switch (internalFormat) {
          case GL_DUDV_ATI:
diff --git a/mesalib/src/mesa/main/texobj.c b/mesalib/src/mesa/main/texobj.c
index 565a3a2d8..0e84b8744 100644
--- a/mesalib/src/mesa/main/texobj.c
+++ b/mesalib/src/mesa/main/texobj.c
@@ -899,7 +899,7 @@ unbind_texobj_from_texunits(struct gl_context *ctx,
 {
    GLuint u, tex;
 
-   for (u = 0; u < MAX_TEXTURE_IMAGE_UNITS; u++) {
+   for (u = 0; u < Elements(ctx->Texture.Unit); u++) {
       struct gl_texture_unit *unit = &ctx->Texture.Unit[u];
       for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {
          if (texObj == unit->CurrentTex[tex]) {
diff --git a/mesalib/src/mesa/main/texstore.c b/mesalib/src/mesa/main/texstore.c
index e527981ff..6e1e63bdf 100644
--- a/mesalib/src/mesa/main/texstore.c
+++ b/mesalib/src/mesa/main/texstore.c
@@ -1002,15 +1002,17 @@ memcpy_texture(struct gl_context *ctx,
 
 
 /**
- * Store a 32-bit integer depth component texture image.
+ * Store a 32-bit integer or float depth component texture image.
  */
 static GLboolean
 _mesa_texstore_z32(TEXSTORE_PARAMS)
 {
    const GLuint depthScale = 0xffffffff;
    const GLuint texelBytes = _mesa_get_format_bytes(dstFormat);
+   const GLenum dstType = _mesa_get_format_datatype(dstFormat);
    (void) dims;
-   ASSERT(dstFormat == MESA_FORMAT_Z32);
+   ASSERT(dstFormat == MESA_FORMAT_Z32 ||
+          dstFormat == MESA_FORMAT_Z32_FLOAT);
    ASSERT(texelBytes == sizeof(GLuint));
 
    if (ctx->Pixel.DepthScale == 1.0f &&
@@ -1018,7 +1020,7 @@ _mesa_texstore_z32(TEXSTORE_PARAMS)
        !srcPacking->SwapBytes &&
        baseInternalFormat == GL_DEPTH_COMPONENT &&
        srcFormat == GL_DEPTH_COMPONENT &&
-       srcType == GL_UNSIGNED_INT) {
+       srcType == dstType) {
       /* simple memcpy path */
       memcpy_texture(ctx, dims,
                      dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
@@ -1039,7 +1041,7 @@ _mesa_texstore_z32(TEXSTORE_PARAMS)
             const GLvoid *src = _mesa_image_address(dims, srcPacking,
                 srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0);
             _mesa_unpack_depth_span(ctx, srcWidth,
-                                    GL_UNSIGNED_INT, (GLuint *) dstRow,
+                                    dstType, dstRow,
                                     depthScale, srcType, src, srcPacking);
             dstRow += dstRowStride;
          }
@@ -4285,6 +4287,72 @@ _mesa_texstore_r11_g11_b10f(TEXSTORE_PARAMS)
 }
 
 
+static GLboolean
+_mesa_texstore_z32f_x24s8(TEXSTORE_PARAMS)
+{
+   ASSERT(dstFormat == MESA_FORMAT_Z32_FLOAT_X24S8);
+   ASSERT(srcFormat == GL_DEPTH_STENCIL ||
+          srcFormat == GL_DEPTH_COMPONENT ||
+          srcFormat == GL_STENCIL_INDEX);
+   ASSERT(srcFormat != GL_DEPTH_STENCIL ||
+          srcType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
+
+   if (srcFormat == GL_DEPTH_STENCIL &&
+       ctx->Pixel.DepthScale == 1.0f &&
+       ctx->Pixel.DepthBias == 0.0f &&
+       !srcPacking->SwapBytes) {
+      /* simple path */
+      memcpy_texture(ctx, dims,
+                     dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
+                     dstRowStride,
+                     dstImageOffsets,
+                     srcWidth, srcHeight, srcDepth, srcFormat, srcType,
+                     srcAddr, srcPacking);
+   }
+   else if (srcFormat == GL_DEPTH_COMPONENT ||
+            srcFormat == GL_STENCIL_INDEX) {
+      GLint img, row;
+      const GLint srcRowStride
+         = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType)
+         / sizeof(uint64_t);
+
+      /* In case we only upload depth we need to preserve the stencil */
+      for (img = 0; img < srcDepth; img++) {
+         uint64_t *dstRow = (uint64_t *) dstAddr
+            + dstImageOffsets[dstZoffset + img]
+            + dstYoffset * dstRowStride / sizeof(uint64_t)
+            + dstXoffset;
+         const uint64_t *src
+            = (const uint64_t *) _mesa_image_address(dims, srcPacking, srcAddr,
+                  srcWidth, srcHeight,
+                  srcFormat, srcType,
+                  img, 0, 0);
+         for (row = 0; row < srcHeight; row++) {
+            /* The unpack functions with:
+             *    dstType = GL_FLOAT_32_UNSIGNED_INT_24_8_REV
+             * only write their own dword, so the other dword (stencil
+             * or depth) is preserved. */
+            if (srcFormat != GL_STENCIL_INDEX)
+               _mesa_unpack_depth_span(ctx, srcWidth,
+                                       GL_FLOAT_32_UNSIGNED_INT_24_8_REV, /* dst type */
+                                       dstRow, /* dst addr */
+                                       1.0f, srcType, src, srcPacking);
+
+            if (srcFormat != GL_DEPTH_COMPONENT)
+               _mesa_unpack_stencil_span(ctx, srcWidth,
+                                         GL_FLOAT_32_UNSIGNED_INT_24_8_REV, /* dst type */
+                                         dstRow, /* dst addr */
+                                         srcType, src, srcPacking,
+                                         ctx->_ImageTransferState);
+
+            src += srcRowStride;
+            dstRow += dstRowStride / sizeof(uint64_t);
+         }
+      }
+   }
+   return GL_TRUE;
+}
+
 
 /**
  * Table mapping MESA_FORMAT_* to _mesa_texstore_*()
@@ -4419,6 +4487,9 @@ texstore_funcs[MESA_FORMAT_COUNT] =
 
    { MESA_FORMAT_RGB9_E5_FLOAT, _mesa_texstore_rgb9_e5 },
    { MESA_FORMAT_R11_G11_B10_FLOAT, _mesa_texstore_r11_g11_b10f },
+
+   { MESA_FORMAT_Z32_FLOAT, _mesa_texstore_z32 },
+   { MESA_FORMAT_Z32_FLOAT_X24S8, _mesa_texstore_z32f_x24s8 },
 };
 
 
diff --git a/mesalib/src/mesa/main/uniforms.c b/mesalib/src/mesa/main/uniforms.c
index 1c4fd82ba..dd069a3a4 100644
--- a/mesalib/src/mesa/main/uniforms.c
+++ b/mesalib/src/mesa/main/uniforms.c
@@ -580,7 +580,7 @@ _mesa_update_shader_textures_used(struct gl_program *prog)
       if (prog->SamplersUsed & (1 << s)) {
          GLuint unit = prog->SamplerUnits[s];
          GLuint tgt = prog->SamplerTargets[s];
-         assert(unit < MAX_TEXTURE_IMAGE_UNITS);
+         assert(unit < Elements(prog->TexturesUsed));
          assert(tgt < NUM_TEXTURE_TARGETS);
          prog->TexturesUsed[unit] |= (1 << tgt);
       }
@@ -674,7 +674,7 @@ set_program_uniform(struct gl_context *ctx, struct gl_program *program,
          GLuint texUnit = ((GLuint *) values)[i];
 
          /* check that the sampler (tex unit index) is legal */
-         if (texUnit >= ctx->Const.MaxTextureImageUnits) {
+         if (texUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
             _mesa_error(ctx, GL_INVALID_VALUE,
                         "glUniform1(invalid sampler/tex unit index for '%s')",
                         param->Name);
diff --git a/mesalib/src/mesa/state_tracker/st_cb_clear.c b/mesalib/src/mesa/state_tracker/st_cb_clear.c
index 181fedd2b..117000ba7 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_clear.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_clear.c
@@ -381,7 +381,8 @@ check_clear_depth_stencil_with_quad(struct gl_context *ctx, struct gl_renderbuff
 
    assert(rb->Format == MESA_FORMAT_S8 ||
           rb->Format == MESA_FORMAT_Z24_S8 ||
-          rb->Format == MESA_FORMAT_S8_Z24);
+          rb->Format == MESA_FORMAT_S8_Z24 ||
+          rb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
 
    if (ctx->Scissor.Enabled &&
        (ctx->Scissor.X != 0 ||
@@ -436,7 +437,8 @@ check_clear_stencil_with_quad(struct gl_context *ctx, struct gl_renderbuffer *rb
 
    assert(rb->Format == MESA_FORMAT_S8 ||
           rb->Format == MESA_FORMAT_Z24_S8 ||
-          rb->Format == MESA_FORMAT_S8_Z24);
+          rb->Format == MESA_FORMAT_S8_Z24 ||
+          rb->Format == MESA_FORMAT_Z32_FLOAT_X24S8);
 
    if (maskStencil) 
       return GL_TRUE;
diff --git a/mesalib/src/mesa/state_tracker/st_cb_drawpixels.c b/mesalib/src/mesa/state_tracker/st_cb_drawpixels.c
index d61d7ac22..dca332464 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_drawpixels.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_drawpixels.c
@@ -812,6 +812,7 @@ draw_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,
       for (row = 0; row < height; row++) {
          GLubyte sValues[MAX_WIDTH];
          GLuint zValues[MAX_WIDTH];
+         GLfloat *zValuesFloat = (GLfloat*)zValues;
          GLenum destType = GL_UNSIGNED_BYTE;
          const GLvoid *source = _mesa_image_address2d(&clippedUnpack, pixels,
                                                       width, height,
@@ -822,7 +823,11 @@ draw_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,
                                    ctx->_ImageTransferState);
 
          if (format == GL_DEPTH_STENCIL) {
-            _mesa_unpack_depth_span(ctx, spanWidth, GL_UNSIGNED_INT, zValues,
+            GLenum ztype =
+               pt->resource->format == PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED ?
+               GL_FLOAT : GL_UNSIGNED_INT;
+
+            _mesa_unpack_depth_span(ctx, spanWidth, ztype, zValues,
                                     (1 << 24) - 1, type, source,
                                     &clippedUnpack);
          }
@@ -887,6 +892,26 @@ draw_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,
                   }
                }
                break;
+            case PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED:
+               if (format == GL_DEPTH_STENCIL) {
+                  uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
+                  GLfloat *destf = (GLfloat*)dest;
+                  GLint k;
+                  assert(usage == PIPE_TRANSFER_WRITE);
+                  for (k = 0; k < spanWidth; k++) {
+                     destf[k*2] = zValuesFloat[k];
+                     dest[k*2+1] = sValues[k] & 0xff;
+                  }
+               }
+               else {
+                  uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
+                  GLint k;
+                  assert(usage == PIPE_TRANSFER_READ_WRITE);
+                  for (k = 0; k < spanWidth; k++) {
+                     dest[k*2+1] = sValues[k] & 0xff;
+                  }
+               }
+               break;
             default:
                assert(0);
             }
@@ -994,14 +1019,23 @@ st_DrawPixels(struct gl_context *ctx, GLint x, GLint y,
                                     GL_NONE, GL_NONE,
                                     PIPE_TEXTURE_2D,
 				    0, PIPE_BIND_SAMPLER_VIEW);
-      if (tex_format == PIPE_FORMAT_Z24_UNORM_S8_USCALED)
-	 stencil_format = PIPE_FORMAT_X24S8_USCALED;
-      else if (tex_format == PIPE_FORMAT_S8_USCALED_Z24_UNORM)
-	 stencil_format = PIPE_FORMAT_S8X24_USCALED;
-      else
-	 stencil_format = PIPE_FORMAT_S8_USCALED;
-      if (stencil_format == PIPE_FORMAT_NONE)
-	 goto stencil_fallback;
+
+      switch (tex_format) {
+      case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
+         stencil_format = PIPE_FORMAT_X24S8_USCALED;
+         break;
+      case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
+         stencil_format = PIPE_FORMAT_S8X24_USCALED;
+         break;
+      case PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED:
+         stencil_format = PIPE_FORMAT_X32_S8X24_USCALED;
+         break;
+      case PIPE_FORMAT_S8_USCALED:
+         stencil_format = PIPE_FORMAT_S8_USCALED;
+         break;
+      default:
+         goto stencil_fallback;
+      }
    }
 
    /* Mesa state should be up to date by now */
@@ -1188,6 +1222,18 @@ copy_stencil_pixels(struct gl_context *ctx, GLint srcx, GLint srcy,
          assert(usage == PIPE_TRANSFER_WRITE);
          memcpy(dst, src, width);
          break;
+      case PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED:
+         {
+            uint *dst4 = (uint *) dst;
+            int j;
+            dst4++;
+            assert(usage == PIPE_TRANSFER_READ_WRITE);
+            for (j = 0; j < width; j++) {
+               *dst4 = src[j] & 0xff;
+               dst4 += 2;
+            }
+         }
+         break;
       default:
          assert(0);
       }
diff --git a/mesalib/src/mesa/state_tracker/st_cb_readpixels.c b/mesalib/src/mesa/state_tracker/st_cb_readpixels.c
index 67926e392..e2b29fe30 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_readpixels.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_readpixels.c
@@ -151,6 +151,24 @@ st_read_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,
             }
          }
          break;
+      case PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED:
+         if (format == GL_DEPTH_STENCIL) {
+            const uint *src = (uint *) (stmap + srcY * pt->stride);
+            const GLfloat *srcf = (const GLfloat*)src;
+            GLint k;
+            for (k = 0; k < width; k++) {
+               zValues[k] = srcf[k*2];
+               sValues[k] = src[k*2+1] & 0xff;
+            }
+         }
+         else {
+            const uint *src = (uint *) (stmap + srcY * pt->stride);
+            GLint k;
+            for (k = 0; k < width; k++) {
+               sValues[k] = src[k*2+1] & 0xff;
+            }
+         }
+         break;
       default:
          assert(0);
       }
@@ -159,7 +177,7 @@ st_read_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,
       dest = _mesa_image_address2d(packing, pixels, width, height,
                                    format, type, j, 0);
       if (format == GL_DEPTH_STENCIL) {
-         _mesa_pack_depth_stencil_span(ctx, width, dest,
+         _mesa_pack_depth_stencil_span(ctx, width, type, dest,
                                        zValues, sValues, packing);
       }
       else {
@@ -568,6 +586,31 @@ st_readpixels(struct gl_context *ctx, GLint x, GLint y, GLsizei width, GLsizei h
             dst += dstStride;
          }
       }
+      else if (pformat == PIPE_FORMAT_Z32_FLOAT) {
+         for (i = 0; i < height; i++) {
+            GLfloat zfloat[MAX_WIDTH];
+            pipe_get_tile_raw(pipe, trans, 0, y, width, 1, zfloat, 0);
+            y += yStep;
+            _mesa_pack_depth_span(ctx, width, dst, type,
+                                  zfloat, &clippedPacking);
+            dst += dstStride;
+         }
+      }
+      else if (pformat == PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED) {
+         assert(format == GL_DEPTH_COMPONENT);
+         for (i = 0; i < height; i++) {
+            GLfloat zfloat[MAX_WIDTH];    /* Z32 */
+            GLfloat zfloat2[MAX_WIDTH*2]; /* Z32X32 */
+            pipe_get_tile_raw(pipe, trans, 0, y, width, 1, zfloat2, 0);
+            y += yStep;
+            for (j = 0; j < width; j++) {
+               zfloat[j] = zfloat2[j*2];
+            }
+            _mesa_pack_depth_span(ctx, width, dst, type,
+                                  zfloat, &clippedPacking);
+            dst += dstStride;
+         }
+      }
       else {
          /* RGBA format */
          /* Do a row at a time to flip image data vertically */
diff --git a/mesalib/src/mesa/state_tracker/st_extensions.c b/mesalib/src/mesa/state_tracker/st_extensions.c
index d3aebe526..99b231d97 100644
--- a/mesalib/src/mesa/state_tracker/st_extensions.c
+++ b/mesalib/src/mesa/state_tracker/st_extensions.c
@@ -607,4 +607,15 @@ void st_init_extensions(struct st_context *st)
    if (screen->get_param(screen, PIPE_CAP_SM3)) {
       ctx->Extensions.ARB_shader_texture_lod = GL_TRUE;
    }
+
+   if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT,
+                                   PIPE_TEXTURE_2D, 0,
+                                   PIPE_BIND_DEPTH_STENCIL |
+                                   PIPE_BIND_SAMPLER_VIEW) &&
+       screen->is_format_supported(screen, PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED,
+                                   PIPE_TEXTURE_2D, 0,
+                                   PIPE_BIND_DEPTH_STENCIL |
+                                   PIPE_BIND_SAMPLER_VIEW)) {
+      ctx->Extensions.ARB_depth_buffer_float = GL_TRUE;
+   }
 }
diff --git a/mesalib/src/mesa/state_tracker/st_format.c b/mesalib/src/mesa/state_tracker/st_format.c
index fa5d8f505..bd4f0860c 100644
--- a/mesalib/src/mesa/state_tracker/st_format.c
+++ b/mesalib/src/mesa/state_tracker/st_format.c
@@ -68,42 +68,70 @@ GLenum
 st_format_datatype(enum pipe_format format)
 {
    const struct util_format_description *desc;
+   int i;
 
    desc = util_format_description(format);
    assert(desc);
 
+   /* Find the first non-VOID channel. */
+   for (i = 0; i < 4; i++) {
+       if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
+           break;
+       }
+   }
+
    if (desc->layout == UTIL_FORMAT_LAYOUT_PLAIN) {
       if (format == PIPE_FORMAT_B5G5R5A1_UNORM ||
           format == PIPE_FORMAT_B5G6R5_UNORM) {
          return GL_UNSIGNED_SHORT;
       }
+      else if (format == PIPE_FORMAT_R11G11B10_FLOAT ||
+               format == PIPE_FORMAT_R9G9B9E5_FLOAT) {
+         return GL_FLOAT;
+      }
       else if (format == PIPE_FORMAT_Z24_UNORM_S8_USCALED ||
                format == PIPE_FORMAT_S8_USCALED_Z24_UNORM ||
                format == PIPE_FORMAT_Z24X8_UNORM ||
                format == PIPE_FORMAT_X8Z24_UNORM) {
          return GL_UNSIGNED_INT_24_8;
       }
+      else if (format == PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED) {
+         return GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
+      }
       else {
          const GLuint size = format_max_bits(format);
+
+         assert(i < 4);
+         if (i == 4)
+            return GL_NONE;
+
          if (size == 8) {
-            if (desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED)
+            if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)
                return GL_UNSIGNED_BYTE;
             else
                return GL_BYTE;
          }
          else if (size == 16) {
-            if (desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED)
+            if (desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT)
+               return GL_HALF_FLOAT;
+            if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)
                return GL_UNSIGNED_SHORT;
             else
                return GL_SHORT;
          }
-         else {
-            assert( size <= 32 );
-            if (desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED)
+         else if (size <= 32) {
+            if (desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT)
+               return GL_FLOAT;
+            if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)
                return GL_UNSIGNED_INT;
             else
                return GL_INT;
          }
+         else {
+            assert(size == 64);
+            assert(desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT);
+            return GL_DOUBLE;
+         }
       }
    }
    else if (format == PIPE_FORMAT_UYVY) {
@@ -180,6 +208,10 @@ st_mesa_format_to_pipe_format(gl_format mesaFormat)
       return PIPE_FORMAT_Z24X8_UNORM;
    case MESA_FORMAT_S8:
       return PIPE_FORMAT_S8_USCALED;
+   case MESA_FORMAT_Z32_FLOAT:
+      return PIPE_FORMAT_Z32_FLOAT;
+   case MESA_FORMAT_Z32_FLOAT_X24S8:
+      return PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED;
    case MESA_FORMAT_YCBCR:
       return PIPE_FORMAT_UYVY;
 #if FEATURE_texture_s3tc
@@ -402,6 +434,10 @@ st_pipe_format_to_mesa_format(enum pipe_format format)
       return MESA_FORMAT_X8_Z24;
    case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
       return MESA_FORMAT_S8_Z24;
+   case PIPE_FORMAT_Z32_FLOAT:
+      return MESA_FORMAT_Z32_FLOAT;
+   case PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED:
+      return MESA_FORMAT_Z32_FLOAT_X24S8;
 
    case PIPE_FORMAT_UYVY:
       return MESA_FORMAT_YCBCR;
@@ -759,6 +795,10 @@ static const struct format_mapping format_map[] = {
       { GL_DEPTH_COMPONENT, 0 },
       { DEFAULT_DEPTH_FORMATS }
    },
+   {
+      { GL_DEPTH_COMPONENT32F, 0 },
+      { PIPE_FORMAT_Z32_FLOAT, 0 }
+   },
 
    /* stencil formats */
    {
@@ -775,6 +815,10 @@ static const struct format_mapping format_map[] = {
       { GL_DEPTH_STENCIL_EXT, GL_DEPTH24_STENCIL8_EXT, 0 },
       { PIPE_FORMAT_Z24_UNORM_S8_USCALED, PIPE_FORMAT_S8_USCALED_Z24_UNORM, 0 }
    },
+   {
+      { GL_DEPTH32F_STENCIL8, 0 },
+      { PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED, 0 }
+   },
 
    /* sRGB formats */
    {
diff --git a/mesalib/src/mesa/state_tracker/st_manager.c b/mesalib/src/mesa/state_tracker/st_manager.c
index a8c4b5c3f..7bd82aae2 100644
--- a/mesalib/src/mesa/state_tracker/st_manager.c
+++ b/mesalib/src/mesa/state_tracker/st_manager.c
@@ -918,6 +918,15 @@ st_manager_add_color_renderbuffer(struct st_context *st,
       return FALSE;
 
    st_framebuffer_update_attachments(stfb);
+
+   /*
+    * Force a call to the state tracker manager to validate the
+    * new renderbuffer. It might be that there is a window system
+    * renderbuffer available.
+    */
+   if(stfb->iface)
+      stfb->iface_stamp = p_atomic_read(&stfb->iface->stamp) - 1;
+
    st_invalidate_state(st->ctx, _NEW_BUFFERS);
 
    return TRUE;
diff --git a/mesalib/src/mesa/swrast/s_blit.c b/mesalib/src/mesa/swrast/s_blit.c
index 3516a41bf..7f53f19eb 100644
--- a/mesalib/src/mesa/swrast/s_blit.c
+++ b/mesalib/src/mesa/swrast/s_blit.c
@@ -568,9 +568,6 @@ _swrast_BlitFramebuffer(struct gl_context *ctx,
    };
    GLint i;
 
-   if (!ctx->DrawBuffer->_NumColorDrawBuffers)
-      return;
-
    if (!_mesa_clip_blit(ctx, &srcX0, &srcY0, &srcX1, &srcY1,
                         &dstX0, &dstY0, &dstX1, &dstY1)) {
       return;
diff --git a/mesalib/src/mesa/swrast/s_readpix.c b/mesalib/src/mesa/swrast/s_readpix.c
index 214f2ea1a..66ca39293 100644
--- a/mesalib/src/mesa/swrast/s_readpix.c
+++ b/mesalib/src/mesa/swrast/s_readpix.c
@@ -446,7 +446,7 @@ read_depth_stencil_pixels(struct gl_context *ctx,
             GLfloat depthVals[MAX_WIDTH];
             _swrast_read_depth_span_float(ctx, depthRb, width, x, y + i,
                                           depthVals);
-            _mesa_pack_depth_stencil_span(ctx, width, depthStencilDst,
+            _mesa_pack_depth_stencil_span(ctx, width, type, depthStencilDst,
                                           depthVals, stencilVals, packing);
          }
       }