libX11 mesa mkfontscale pixman xserver git update 29 Mar 2011

1 files changed, 347 insertions, 347 deletions

diff --git a/mesalib/src/mesa/state_tracker/st_cb_accum.c b/mesalib/src/mesa/state_tracker/st_cb_accum.c
index 66e5312d9..3e3659d15 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_accum.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_accum.c
@@ -1,347 +1,347 @@
-/**************************************************************************

- * 

- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.

- * 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, sub license, 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 (including the

- * next paragraph) 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 NON-INFRINGEMENT.

- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.

- * 

- **************************************************************************/

-

- /*

-  * Authors:

-  *   Brian Paul

-  */

-

-#include "main/imports.h"

-#include "main/image.h"

-#include "main/macros.h"

-#include "main/mfeatures.h"

-

-#include "st_debug.h"

-#include "st_context.h"

-#include "st_cb_accum.h"

-#include "st_cb_fbo.h"

-#include "st_texture.h"

-#include "pipe/p_context.h"

-#include "pipe/p_defines.h"

-#include "util/u_format.h"

-#include "util/u_inlines.h"

-#include "util/u_tile.h"

-

-

-#if FEATURE_accum

-

-/**

- * For hardware that supports deep color buffers, we could accelerate

- * most/all the accum operations with blending/texturing.

- * For now, just use the get/put_tile() functions and do things in software.

- */

-

-

-void

-st_clear_accum_buffer(struct gl_context *ctx, struct gl_renderbuffer *rb)

-{

-   struct st_renderbuffer *acc_strb = st_renderbuffer(rb);

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

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

-   const GLint width = ctx->DrawBuffer->_Xmax - xpos;

-   const GLint height = ctx->DrawBuffer->_Ymax - ypos;

-   size_t stride = acc_strb->stride;

-   GLubyte *data = acc_strb->data;

-

-   if(!data)

-      return;

-   

-   switch (acc_strb->format) {

-   case PIPE_FORMAT_R16G16B16A16_SNORM:

-      {

-         GLshort r = FLOAT_TO_SHORT(ctx->Accum.ClearColor[0]);

-         GLshort g = FLOAT_TO_SHORT(ctx->Accum.ClearColor[1]);

-         GLshort b = FLOAT_TO_SHORT(ctx->Accum.ClearColor[2]);

-         GLshort a = FLOAT_TO_SHORT(ctx->Accum.ClearColor[3]);

-         int i, j;

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

-            GLshort *dst = (GLshort *) (data + (ypos + i) * stride + xpos * 8);

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

-               dst[0] = r;

-               dst[1] = g;

-               dst[2] = b;

-               dst[3] = a;

-               dst += 4;

-            }

-         }

-      }

-      break;

-   default:

-      _mesa_problem(ctx, "unexpected format in st_clear_accum_buffer()");

-   }

-}

-

-

-/** For ADD/MULT */

-static void

-accum_mad(struct gl_context *ctx, GLfloat scale, GLfloat bias,

-          GLint xpos, GLint ypos, GLint width, GLint height,

-          struct st_renderbuffer *acc_strb)

-{

-   size_t stride = acc_strb->stride;

-   GLubyte *data = acc_strb->data;

-

-   switch (acc_strb->format) {

-   case PIPE_FORMAT_R16G16B16A16_SNORM:

-      {

-         int i, j;

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

-            GLshort *acc = (GLshort *) (data + (ypos + i) * stride + xpos * 8);

-            for (j = 0; j < width * 4; j++) {

-               float val = SHORT_TO_FLOAT(*acc) * scale + bias;

-               *acc++ = FLOAT_TO_SHORT(val);

-            }

-         }

-      }

-      break;

-   default:

-      _mesa_problem(NULL, "unexpected format in st_clear_accum_buffer()");

-   }

-}

-

-

-static void

-accum_accum(struct st_context *st, GLfloat value,

-            GLint xpos, GLint ypos, GLint width, GLint height,

-            struct st_renderbuffer *acc_strb,

-            struct st_renderbuffer *color_strb)

-{

-   struct pipe_context *pipe = st->pipe;

-   struct pipe_transfer *color_trans;

-   size_t stride = acc_strb->stride;

-   GLubyte *data = acc_strb->data;

-   GLfloat *buf;

-

-   if (ST_DEBUG & DEBUG_FALLBACK)

-      debug_printf("%s: fallback processing\n", __FUNCTION__);

-

-   color_trans = pipe_get_transfer(st->pipe,

-                                   color_strb->texture,

-                                   0, 0,

-                                   PIPE_TRANSFER_READ, xpos, ypos,

-                                   width, height);

-

-   buf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));

-

-   pipe_get_tile_rgba_format(pipe, color_trans, 0, 0, width, height,

-                             util_format_linear(color_strb->texture->format),

-                             buf);

-

-   switch (acc_strb->format) {

-   case PIPE_FORMAT_R16G16B16A16_SNORM:

-      {

-         const GLfloat *color = buf;

-         int i, j;

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

-            GLshort *acc = (GLshort *) (data + (ypos + i) * stride + xpos * 8);

-            for (j = 0; j < width * 4; j++) {

-               float val = *color++ * value;

-               *acc++ += FLOAT_TO_SHORT(val);

-            }

-         }

-      }

-      break;

-   default:

-      _mesa_problem(NULL, "unexpected format in st_clear_accum_buffer()");

-   }

-

-   free(buf);

-   pipe->transfer_destroy(pipe, color_trans);

-}

-

-

-static void

-accum_load(struct st_context *st, GLfloat value,

-           GLint xpos, GLint ypos, GLint width, GLint height,

-           struct st_renderbuffer *acc_strb,

-           struct st_renderbuffer *color_strb)

-{

-   struct pipe_context *pipe = st->pipe;

-   struct pipe_transfer *color_trans;

-   size_t stride = acc_strb->stride;

-   GLubyte *data = acc_strb->data;

-   GLfloat *buf;

-

-   if (ST_DEBUG & DEBUG_FALLBACK)

-      debug_printf("%s: fallback processing\n", __FUNCTION__);

-

-   color_trans = pipe_get_transfer(st->pipe, color_strb->texture,

-                                   0, 0,

-                                   PIPE_TRANSFER_READ, xpos, ypos,

-                                   width, height);

-

-   buf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));

-

-   pipe_get_tile_rgba_format(pipe, color_trans, 0, 0, width, height,

-                             util_format_linear(color_strb->texture->format),

-                             buf);

-

-   switch (acc_strb->format) {

-   case PIPE_FORMAT_R16G16B16A16_SNORM:

-      {

-         const GLfloat *color = buf;

-         int i, j;

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

-            GLshort *acc = (GLshort *) (data + (ypos + i) * stride + xpos * 8);

-            for (j = 0; j < width * 4; j++) {

-               float val = *color++ * value;

-               *acc++ = FLOAT_TO_SHORT(val);

-            }

-         }

-      }

-      break;

-   default:

-      _mesa_problem(NULL, "unexpected format in st_clear_accum_buffer()");

-   }

-

-   free(buf);

-   pipe->transfer_destroy(pipe, color_trans);

-}

-

-

-static void

-accum_return(struct gl_context *ctx, GLfloat value,

-             GLint xpos, GLint ypos, GLint width, GLint height,

-             struct st_renderbuffer *acc_strb,

-             struct st_renderbuffer *color_strb)

-{

-   struct pipe_context *pipe = st_context(ctx)->pipe;

-   const GLubyte *colormask = ctx->Color.ColorMask[0];

-   enum pipe_transfer_usage usage;

-   struct pipe_transfer *color_trans;

-   size_t stride = acc_strb->stride;

-   const GLubyte *data = acc_strb->data;

-   GLfloat *buf;

-   enum pipe_format format = util_format_linear(color_strb->texture->format);

-

-   if (ST_DEBUG & DEBUG_FALLBACK)

-      debug_printf("%s: fallback processing\n", __FUNCTION__);

-

-   buf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));

-

-   if (!colormask[0] || !colormask[1] || !colormask[2] || !colormask[3])

-      usage = PIPE_TRANSFER_READ_WRITE;

-   else

-      usage = PIPE_TRANSFER_WRITE;

-

-   color_trans = pipe_get_transfer(st_context(ctx)->pipe,

-                                   color_strb->texture, 0, 0,

-                                   usage,

-                                   xpos, ypos,

-                                   width, height);

-

-   if (usage & PIPE_TRANSFER_READ)

-      pipe_get_tile_rgba_format(pipe, color_trans, 0, 0, width, height,

-                                format, buf);

-

-   switch (acc_strb->format) {

-   case PIPE_FORMAT_R16G16B16A16_SNORM:

-      {

-         GLfloat *color = buf;

-         int i, j, ch;

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

-            const GLshort *acc = (const GLshort *) (data + (ypos + i) * stride + xpos * 8);

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

-               for (ch = 0; ch < 4; ch++) {

-                  if (colormask[ch]) {

-                     GLfloat val = SHORT_TO_FLOAT(*acc * value);

-                     *color = CLAMP(val, 0.0f, 1.0f);

-                  }

-                  else {

-                     /* No change */

-                  }

-                  ++acc;

-                  ++color;

-               }

-            }

-         }

-      }

-      break;

-   default:

-      _mesa_problem(NULL, "unexpected format in st_clear_accum_buffer()");

-   }

-

-   pipe_put_tile_rgba_format(pipe, color_trans, 0, 0, width, height,

-                             format, buf);

-

-   free(buf);

-   pipe->transfer_destroy(pipe, color_trans);

-}

-

-

-static void

-st_Accum(struct gl_context *ctx, GLenum op, GLfloat value)

-{

-   struct st_context *st = st_context(ctx);

-   struct st_renderbuffer *acc_strb

-     = st_renderbuffer(ctx->DrawBuffer->Attachment[BUFFER_ACCUM].Renderbuffer);

-   struct st_renderbuffer *color_strb

-      = st_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer);

-

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

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

-   const GLint width = ctx->DrawBuffer->_Xmax - xpos;

-   const GLint height = ctx->DrawBuffer->_Ymax - ypos;

-

-   if(!acc_strb->data)

-      return;

-   

-   switch (op) {

-   case GL_ADD:

-      if (value != 0.0F) {

-         accum_mad(ctx, 1.0, value, xpos, ypos, width, height, acc_strb);

-      }

-      break;

-   case GL_MULT:

-      if (value != 1.0F) {

-         accum_mad(ctx, value, 0.0, xpos, ypos, width, height, acc_strb);

-      }

-      break;

-   case GL_ACCUM:

-      if (value != 0.0F) {

-         accum_accum(st, value, xpos, ypos, width, height, acc_strb, color_strb);

-      }

-      break;

-   case GL_LOAD:

-      accum_load(st, value, xpos, ypos, width, height, acc_strb, color_strb);

-      break;

-   case GL_RETURN:

-      accum_return(ctx, value, xpos, ypos, width, height, acc_strb, color_strb);

-      break;

-   default:

-      assert(0);

-   }

-}

-

-

-

-void st_init_accum_functions(struct dd_function_table *functions)

-{

-   functions->Accum = st_Accum;

-}

-

-#endif /* FEATURE_accum */

+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+ * 
+ **************************************************************************/
+
+ /*
+  * Authors:
+  *   Brian Paul
+  */
+
+#include "main/imports.h"
+#include "main/image.h"
+#include "main/macros.h"
+#include "main/mfeatures.h"
+
+#include "st_debug.h"
+#include "st_context.h"
+#include "st_cb_accum.h"
+#include "st_cb_fbo.h"
+#include "st_texture.h"
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "util/u_format.h"
+#include "util/u_inlines.h"
+#include "util/u_tile.h"
+
+
+#if FEATURE_accum
+
+/**
+ * For hardware that supports deep color buffers, we could accelerate
+ * most/all the accum operations with blending/texturing.
+ * For now, just use the get/put_tile() functions and do things in software.
+ */
+
+
+void
+st_clear_accum_buffer(struct gl_context *ctx, struct gl_renderbuffer *rb)
+{
+   struct st_renderbuffer *acc_strb = st_renderbuffer(rb);
+   const GLint xpos = ctx->DrawBuffer->_Xmin;
+   const GLint ypos = ctx->DrawBuffer->_Ymin;
+   const GLint width = ctx->DrawBuffer->_Xmax - xpos;
+   const GLint height = ctx->DrawBuffer->_Ymax - ypos;
+   size_t stride = acc_strb->stride;
+   GLubyte *data = acc_strb->data;
+
+   if(!data)
+      return;
+   
+   switch (acc_strb->format) {
+   case PIPE_FORMAT_R16G16B16A16_SNORM:
+      {
+         GLshort r = FLOAT_TO_SHORT(ctx->Accum.ClearColor[0]);
+         GLshort g = FLOAT_TO_SHORT(ctx->Accum.ClearColor[1]);
+         GLshort b = FLOAT_TO_SHORT(ctx->Accum.ClearColor[2]);
+         GLshort a = FLOAT_TO_SHORT(ctx->Accum.ClearColor[3]);
+         int i, j;
+         for (i = 0; i < height; i++) {
+            GLshort *dst = (GLshort *) (data + (ypos + i) * stride + xpos * 8);
+            for (j = 0; j < width; j++) {
+               dst[0] = r;
+               dst[1] = g;
+               dst[2] = b;
+               dst[3] = a;
+               dst += 4;
+            }
+         }
+      }
+      break;
+   default:
+      _mesa_problem(ctx, "unexpected format in st_clear_accum_buffer()");
+   }
+}
+
+
+/** For ADD/MULT */
+static void
+accum_mad(struct gl_context *ctx, GLfloat scale, GLfloat bias,
+          GLint xpos, GLint ypos, GLint width, GLint height,
+          struct st_renderbuffer *acc_strb)
+{
+   size_t stride = acc_strb->stride;
+   GLubyte *data = acc_strb->data;
+
+   switch (acc_strb->format) {
+   case PIPE_FORMAT_R16G16B16A16_SNORM:
+      {
+         int i, j;
+         for (i = 0; i < height; i++) {
+            GLshort *acc = (GLshort *) (data + (ypos + i) * stride + xpos * 8);
+            for (j = 0; j < width * 4; j++) {
+               float val = SHORT_TO_FLOAT(*acc) * scale + bias;
+               *acc++ = FLOAT_TO_SHORT(val);
+            }
+         }
+      }
+      break;
+   default:
+      _mesa_problem(NULL, "unexpected format in st_clear_accum_buffer()");
+   }
+}
+
+
+static void
+accum_accum(struct st_context *st, GLfloat value,
+            GLint xpos, GLint ypos, GLint width, GLint height,
+            struct st_renderbuffer *acc_strb,
+            struct st_renderbuffer *color_strb)
+{
+   struct pipe_context *pipe = st->pipe;
+   struct pipe_transfer *color_trans;
+   size_t stride = acc_strb->stride;
+   GLubyte *data = acc_strb->data;
+   GLfloat *buf;
+
+   if (ST_DEBUG & DEBUG_FALLBACK)
+      debug_printf("%s: fallback processing\n", __FUNCTION__);
+
+   color_trans = pipe_get_transfer(st->pipe,
+                                   color_strb->texture,
+                                   0, 0,
+                                   PIPE_TRANSFER_READ, xpos, ypos,
+                                   width, height);
+
+   buf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
+
+   pipe_get_tile_rgba_format(pipe, color_trans, 0, 0, width, height,
+                             util_format_linear(color_strb->texture->format),
+                             buf);
+
+   switch (acc_strb->format) {
+   case PIPE_FORMAT_R16G16B16A16_SNORM:
+      {
+         const GLfloat *color = buf;
+         int i, j;
+         for (i = 0; i < height; i++) {
+            GLshort *acc = (GLshort *) (data + (ypos + i) * stride + xpos * 8);
+            for (j = 0; j < width * 4; j++) {
+               float val = *color++ * value;
+               *acc++ += FLOAT_TO_SHORT(val);
+            }
+         }
+      }
+      break;
+   default:
+      _mesa_problem(NULL, "unexpected format in st_clear_accum_buffer()");
+   }
+
+   free(buf);
+   pipe->transfer_destroy(pipe, color_trans);
+}
+
+
+static void
+accum_load(struct st_context *st, GLfloat value,
+           GLint xpos, GLint ypos, GLint width, GLint height,
+           struct st_renderbuffer *acc_strb,
+           struct st_renderbuffer *color_strb)
+{
+   struct pipe_context *pipe = st->pipe;
+   struct pipe_transfer *color_trans;
+   size_t stride = acc_strb->stride;
+   GLubyte *data = acc_strb->data;
+   GLfloat *buf;
+
+   if (ST_DEBUG & DEBUG_FALLBACK)
+      debug_printf("%s: fallback processing\n", __FUNCTION__);
+
+   color_trans = pipe_get_transfer(st->pipe, color_strb->texture,
+                                   0, 0,
+                                   PIPE_TRANSFER_READ, xpos, ypos,
+                                   width, height);
+
+   buf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
+
+   pipe_get_tile_rgba_format(pipe, color_trans, 0, 0, width, height,
+                             util_format_linear(color_strb->texture->format),
+                             buf);
+
+   switch (acc_strb->format) {
+   case PIPE_FORMAT_R16G16B16A16_SNORM:
+      {
+         const GLfloat *color = buf;
+         int i, j;
+         for (i = 0; i < height; i++) {
+            GLshort *acc = (GLshort *) (data + (ypos + i) * stride + xpos * 8);
+            for (j = 0; j < width * 4; j++) {
+               float val = *color++ * value;
+               *acc++ = FLOAT_TO_SHORT(val);
+            }
+         }
+      }
+      break;
+   default:
+      _mesa_problem(NULL, "unexpected format in st_clear_accum_buffer()");
+   }
+
+   free(buf);
+   pipe->transfer_destroy(pipe, color_trans);
+}
+
+
+static void
+accum_return(struct gl_context *ctx, GLfloat value,
+             GLint xpos, GLint ypos, GLint width, GLint height,
+             struct st_renderbuffer *acc_strb,
+             struct st_renderbuffer *color_strb)
+{
+   struct pipe_context *pipe = st_context(ctx)->pipe;
+   const GLubyte *colormask = ctx->Color.ColorMask[0];
+   enum pipe_transfer_usage usage;
+   struct pipe_transfer *color_trans;
+   size_t stride = acc_strb->stride;
+   const GLubyte *data = acc_strb->data;
+   GLfloat *buf;
+   enum pipe_format format = util_format_linear(color_strb->texture->format);
+
+   if (ST_DEBUG & DEBUG_FALLBACK)
+      debug_printf("%s: fallback processing\n", __FUNCTION__);
+
+   buf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
+
+   if (!colormask[0] || !colormask[1] || !colormask[2] || !colormask[3])
+      usage = PIPE_TRANSFER_READ_WRITE;
+   else
+      usage = PIPE_TRANSFER_WRITE;
+
+   color_trans = pipe_get_transfer(pipe,
+                                   color_strb->texture, 0, 0,
+                                   usage,
+                                   xpos, ypos,
+                                   width, height);
+
+   if (usage & PIPE_TRANSFER_READ)
+      pipe_get_tile_rgba_format(pipe, color_trans, 0, 0, width, height,
+                                format, buf);
+
+   switch (acc_strb->format) {
+   case PIPE_FORMAT_R16G16B16A16_SNORM:
+      {
+         GLfloat *color = buf;
+         int i, j, ch;
+         for (i = 0; i < height; i++) {
+            const GLshort *acc = (const GLshort *) (data + (ypos + i) * stride + xpos * 8);
+            for (j = 0; j < width; j++) {
+               for (ch = 0; ch < 4; ch++) {
+                  if (colormask[ch]) {
+                     GLfloat val = SHORT_TO_FLOAT(*acc * value);
+                     *color = CLAMP(val, 0.0f, 1.0f);
+                  }
+                  else {
+                     /* No change */
+                  }
+                  ++acc;
+                  ++color;
+               }
+            }
+         }
+      }
+      break;
+   default:
+      _mesa_problem(NULL, "unexpected format in st_clear_accum_buffer()");
+   }
+
+   pipe_put_tile_rgba_format(pipe, color_trans, 0, 0, width, height,
+                             format, buf);
+
+   free(buf);
+   pipe->transfer_destroy(pipe, color_trans);
+}
+
+
+static void
+st_Accum(struct gl_context *ctx, GLenum op, GLfloat value)
+{
+   struct st_context *st = st_context(ctx);
+   struct st_renderbuffer *acc_strb
+     = st_renderbuffer(ctx->DrawBuffer->Attachment[BUFFER_ACCUM].Renderbuffer);
+   struct st_renderbuffer *color_strb
+      = st_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer);
+
+   const GLint xpos = ctx->DrawBuffer->_Xmin;
+   const GLint ypos = ctx->DrawBuffer->_Ymin;
+   const GLint width = ctx->DrawBuffer->_Xmax - xpos;
+   const GLint height = ctx->DrawBuffer->_Ymax - ypos;
+
+   if(!acc_strb->data)
+      return;
+   
+   switch (op) {
+   case GL_ADD:
+      if (value != 0.0F) {
+         accum_mad(ctx, 1.0, value, xpos, ypos, width, height, acc_strb);
+      }
+      break;
+   case GL_MULT:
+      if (value != 1.0F) {
+         accum_mad(ctx, value, 0.0, xpos, ypos, width, height, acc_strb);
+      }
+      break;
+   case GL_ACCUM:
+      if (value != 0.0F) {
+         accum_accum(st, value, xpos, ypos, width, height, acc_strb, color_strb);
+      }
+      break;
+   case GL_LOAD:
+      accum_load(st, value, xpos, ypos, width, height, acc_strb, color_strb);
+      break;
+   case GL_RETURN:
+      accum_return(ctx, value, xpos, ypos, width, height, acc_strb, color_strb);
+      break;
+   default:
+      assert(0);
+   }
+}
+
+
+
+void st_init_accum_functions(struct dd_function_table *functions)
+{
+   functions->Accum = st_Accum;
+}
+
+#endif /* FEATURE_accum */