libxtrans libX11 libxcb xserver mesa git update 12 dec 2011

10 files changed, 2123 insertions, 656 deletions

diff --git a/mesalib/src/mesa/swrast/s_accum.c b/mesalib/src/mesa/swrast/s_accum.c
deleted file mode 100644
index 0ec907d79..000000000
--- a/mesalib/src/mesa/swrast/s_accum.c
+++ /dev/null
@@ -1,598 +0,0 @@
-/*
- * Mesa 3-D graphics library
- * Version:  6.5.2
- *
- * 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.
- */
-
-
-#include "main/glheader.h"
-#include "main/condrender.h"
-#include "main/context.h"
-#include "main/macros.h"
-#include "main/imports.h"
-
-#include "s_accum.h"
-#include "s_context.h"
-#include "s_masking.h"
-#include "s_span.h"
-
-
-/* XXX this would have to change for accum buffers with more or less
- * than 16 bits per color channel.
- */
-#define ACCUM_SCALE16 32767.0F
-
-
-/*
- * Accumulation buffer notes
- *
- * Normally, accumulation buffer values are GLshorts with values in
- * [-32767, 32767] which represent floating point colors in [-1, 1],
- * as defined by the OpenGL specification.
- *
- * We optimize for the common case used for full-scene antialiasing:
- *    // start with accum buffer cleared to zero
- *    glAccum(GL_LOAD, w);   // or GL_ACCUM the first image
- *    glAccum(GL_ACCUM, w);
- *    ...
- *    glAccum(GL_ACCUM, w);
- *    glAccum(GL_RETURN, 1.0);
- * That is, we start with an empty accumulation buffer and accumulate
- * n images, each with weight w = 1/n.
- * In this scenario, we can simply store unscaled integer values in
- * the accum buffer instead of scaled integers.  We'll also keep track
- * of the w value so when we do GL_RETURN we simply divide the accumulated
- * values by n (n=1/w).
- * This lets us avoid _many_ int->float->int conversions.
- */
-
-
-#if CHAN_BITS == 8
-/* enable the optimization */
-#define USE_OPTIMIZED_ACCUM  1
-#else
-#define USE_OPTIMIZED_ACCUM  0
-#endif
-
-
-/**
- * This is called when we fall out of optimized/unscaled accum buffer mode.
- * That is, we convert each unscaled accum buffer value into a scaled value
- * representing the range[-1, 1].
- */
-static void
-rescale_accum( struct gl_context *ctx )
-{
-   SWcontext *swrast = SWRAST_CONTEXT(ctx);
-   struct gl_renderbuffer *rb
-      = ctx->DrawBuffer->Attachment[BUFFER_ACCUM].Renderbuffer;
-   const GLfloat s = swrast->_IntegerAccumScaler * (32767.0F / CHAN_MAXF);
-
-   assert(rb);
-   assert(rb->_BaseFormat == GL_RGBA);
-   /* add other types in future? */
-   assert(rb->DataType == GL_SHORT || rb->DataType == GL_UNSIGNED_SHORT);
-   assert(swrast->_IntegerAccumMode);
-
-   if (rb->GetPointer(ctx, rb, 0, 0)) {
-      /* directly-addressable memory */
-      GLuint y;
-      for (y = 0; y < rb->Height; y++) {
-         GLuint i;
-         GLshort *acc = (GLshort *) rb->GetPointer(ctx, rb, 0, y);
-         for (i = 0; i < 4 * rb->Width; i++) {
-            acc[i] = (GLshort) (acc[i] * s);
-         }
-      }
-   }
-   else {
-      /* use get/put row funcs */
-      GLuint y;
-      for (y = 0; y < rb->Height; y++) {
-         GLshort accRow[MAX_WIDTH * 4];
-         GLuint i;
-         rb->GetRow(ctx, rb, rb->Width, 0, y, accRow);
-         for (i = 0; i < 4 * rb->Width; i++) {
-            accRow[i] = (GLshort) (accRow[i] * s);
-         }
-         rb->PutRow(ctx, rb, rb->Width, 0, y, accRow, NULL);
-      }
-   }
-
-   swrast->_IntegerAccumMode = GL_FALSE;
-}
-
-
-
-/**
- * Clear the accumulation Buffer.
- */
-void
-_swrast_clear_accum_buffer( struct gl_context *ctx, struct gl_renderbuffer *rb )
-{
-   SWcontext *swrast = SWRAST_CONTEXT(ctx);
-   GLuint x, y, width, height;
-
-   /* No accumulation buffer! Not an error. */
-   if (!rb || !rb->Data)
-      return;
-
-   assert(rb->_BaseFormat == GL_RGBA);
-   /* add other types in future? */
-   assert(rb->DataType == GL_SHORT || rb->DataType == GL_UNSIGNED_SHORT);
-
-   /* bounds, with scissor */
-   x = ctx->DrawBuffer->_Xmin;
-   y = ctx->DrawBuffer->_Ymin;
-   width = ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin;
-   height = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin;
-
-   if (rb->DataType == GL_SHORT || rb->DataType == GL_UNSIGNED_SHORT) {
-      const GLfloat accScale = 32767.0;
-      GLshort clearVal[4];
-      GLuint i;
-
-      clearVal[0] = (GLshort) (ctx->Accum.ClearColor[0] * accScale);
-      clearVal[1] = (GLshort) (ctx->Accum.ClearColor[1] * accScale);
-      clearVal[2] = (GLshort) (ctx->Accum.ClearColor[2] * accScale);
-      clearVal[3] = (GLshort) (ctx->Accum.ClearColor[3] * accScale);
-
-      for (i = 0; i < height; i++) {
-         rb->PutMonoRow(ctx, rb, width, x, y + i, clearVal, NULL);
-      }
-   }
-   else {
-      /* someday support other sizes */
-   }
-
-   /* update optimized accum state vars */
-   if (ctx->Accum.ClearColor[0] == 0.0 && ctx->Accum.ClearColor[1] == 0.0 &&
-       ctx->Accum.ClearColor[2] == 0.0 && ctx->Accum.ClearColor[3] == 0.0) {
-#if USE_OPTIMIZED_ACCUM
-      swrast->_IntegerAccumMode = GL_TRUE;
-#else
-      swrast->_IntegerAccumMode = GL_FALSE;
-#endif
-      swrast->_IntegerAccumScaler = 0.0;  /* denotes empty accum buffer */
-   }
-   else {
-      swrast->_IntegerAccumMode = GL_FALSE;
-   }
-}
-
-
-static void
-accum_add(struct gl_context *ctx, GLfloat value,
-          GLint xpos, GLint ypos, GLint width, GLint height )
-{
-   SWcontext *swrast = SWRAST_CONTEXT(ctx);
-   struct gl_renderbuffer *rb
-      = ctx->DrawBuffer->Attachment[BUFFER_ACCUM].Renderbuffer;
-
-   assert(rb);
-
-   /* Leave optimized accum buffer mode */
-   if (swrast->_IntegerAccumMode)
-      rescale_accum(ctx);
-
-   if (rb->DataType == GL_SHORT || rb->DataType == GL_UNSIGNED_SHORT) {
-      const GLshort incr = (GLshort) (value * ACCUM_SCALE16);
-      if (rb->GetPointer(ctx, rb, 0, 0)) {
-         GLint i, j;
-         for (i = 0; i < height; i++) {
-            GLshort *acc = (GLshort *) rb->GetPointer(ctx, rb, xpos, ypos + i);
-            for (j = 0; j < 4 * width; j++) {
-               acc[j] += incr;
-            }
-         }
-      }
-      else {
-         GLint i, j;
-         for (i = 0; i < height; i++) {
-            GLshort accRow[4 * MAX_WIDTH];
-            rb->GetRow(ctx, rb, width, xpos, ypos + i, accRow);
-            for (j = 0; j < 4 * width; j++) {
-               accRow[j] += incr;
-            }
-            rb->PutRow(ctx, rb, width, xpos, ypos + i, accRow, NULL);
-         }
-      }
-   }
-   else {
-      /* other types someday */
-   }
-}
-
-
-static void
-accum_mult(struct gl_context *ctx, GLfloat mult,
-           GLint xpos, GLint ypos, GLint width, GLint height )
-{
-   SWcontext *swrast = SWRAST_CONTEXT(ctx);
-   struct gl_renderbuffer *rb
-      = ctx->DrawBuffer->Attachment[BUFFER_ACCUM].Renderbuffer;
-
-   assert(rb);
-
-   /* Leave optimized accum buffer mode */
-   if (swrast->_IntegerAccumMode)
-      rescale_accum(ctx);
-
-   if (rb->DataType == GL_SHORT || rb->DataType == GL_UNSIGNED_SHORT) {
-      if (rb->GetPointer(ctx, rb, 0, 0)) {
-         GLint i, j;
-         for (i = 0; i < height; i++) {
-            GLshort *acc = (GLshort *) rb->GetPointer(ctx, rb, xpos, ypos + i);
-            for (j = 0; j < 4 * width; j++) {
-               acc[j] = (GLshort) (acc[j] * mult);
-            }
-         }
-      }
-      else {
-         GLint i, j;
-         for (i = 0; i < height; i++) {
-            GLshort accRow[4 * MAX_WIDTH];
-            rb->GetRow(ctx, rb, width, xpos, ypos + i, accRow);
-            for (j = 0; j < 4 * width; j++) {
-               accRow[j] = (GLshort) (accRow[j] * mult);
-            }
-            rb->PutRow(ctx, rb, width, xpos, ypos + i, accRow, NULL);
-         }
-      }
-   }
-   else {
-      /* other types someday */
-   }
-}
-
-
-
-static void
-accum_accum(struct gl_context *ctx, GLfloat value,
-            GLint xpos, GLint ypos, GLint width, GLint height )
-{
-   SWcontext *swrast = SWRAST_CONTEXT(ctx);
-   struct gl_renderbuffer *rb
-      = ctx->DrawBuffer->Attachment[BUFFER_ACCUM].Renderbuffer;
-   const GLboolean directAccess = (rb->GetPointer(ctx, rb, 0, 0) != NULL);
-
-   assert(rb);
-
-   if (!ctx->ReadBuffer->_ColorReadBuffer) {
-      /* no read buffer - OK */
-      return;
-   }
-
-   /* May have to leave optimized accum buffer mode */
-   if (swrast->_IntegerAccumScaler == 0.0 && value > 0.0 && value <= 1.0)
-      swrast->_IntegerAccumScaler = value;
-   if (swrast->_IntegerAccumMode && value != swrast->_IntegerAccumScaler)
-      rescale_accum(ctx);
-
-   if (rb->DataType == GL_SHORT || rb->DataType == GL_UNSIGNED_SHORT) {
-      const GLfloat scale = value * ACCUM_SCALE16 / CHAN_MAXF;
-      GLshort accumRow[4 * MAX_WIDTH];
-      GLchan rgba[MAX_WIDTH][4];
-      GLint i;
-
-      for (i = 0; i < height; i++) {
-         GLshort *acc;
-         if (directAccess) {
-            acc = (GLshort *) rb->GetPointer(ctx, rb, xpos, ypos + i);
-         }
-         else {
-            rb->GetRow(ctx, rb, width, xpos, ypos + i, accumRow);
-            acc = accumRow;
-         }
-
-         /* read colors from color buffer */
-         _swrast_read_rgba_span(ctx, ctx->ReadBuffer->_ColorReadBuffer, width,
-                                xpos, ypos + i, CHAN_TYPE, rgba);
-
-         /* do accumulation */
-         if (swrast->_IntegerAccumMode) {
-            /* simply add integer color values into accum buffer */
-            GLint j;
-            for (j = 0; j < width; j++) {
-               acc[j * 4 + 0] += rgba[j][RCOMP];
-               acc[j * 4 + 1] += rgba[j][GCOMP];
-               acc[j * 4 + 2] += rgba[j][BCOMP];
-               acc[j * 4 + 3] += rgba[j][ACOMP];
-            }
-         }
-         else {
-            /* scaled integer (or float) accum buffer */
-            GLint j;
-            for (j = 0; j < width; j++) {
-               acc[j * 4 + 0] += (GLshort) ((GLfloat) rgba[j][RCOMP] * scale);
-               acc[j * 4 + 1] += (GLshort) ((GLfloat) rgba[j][GCOMP] * scale);
-               acc[j * 4 + 2] += (GLshort) ((GLfloat) rgba[j][BCOMP] * scale);
-               acc[j * 4 + 3] += (GLshort) ((GLfloat) rgba[j][ACOMP] * scale);
-            }
-         }
-
-         if (!directAccess) {
-            rb->PutRow(ctx, rb, width, xpos, ypos + i, accumRow, NULL);
-         }
-      }
-   }
-   else {
-      /* other types someday */
-   }
-}
-
-
-
-static void
-accum_load(struct gl_context *ctx, GLfloat value,
-           GLint xpos, GLint ypos, GLint width, GLint height )
-{
-   SWcontext *swrast = SWRAST_CONTEXT(ctx);
-   struct gl_renderbuffer *rb
-      = ctx->DrawBuffer->Attachment[BUFFER_ACCUM].Renderbuffer;
-   const GLboolean directAccess = (rb->GetPointer(ctx, rb, 0, 0) != NULL);
-
-   assert(rb);
-
-   if (!ctx->ReadBuffer->_ColorReadBuffer) {
-      /* no read buffer - OK */
-      return;
-   }
-
-   /* This is a change to go into optimized accum buffer mode */
-   if (value > 0.0 && value <= 1.0) {
-#if USE_OPTIMIZED_ACCUM
-      swrast->_IntegerAccumMode = GL_TRUE;
-#else
-      swrast->_IntegerAccumMode = GL_FALSE;
-#endif
-      swrast->_IntegerAccumScaler = value;
-   }
-   else {
-      swrast->_IntegerAccumMode = GL_FALSE;
-      swrast->_IntegerAccumScaler = 0.0;
-   }
-
-   if (rb->DataType == GL_SHORT || rb->DataType == GL_UNSIGNED_SHORT) {
-      const GLfloat scale = value * ACCUM_SCALE16 / CHAN_MAXF;
-      GLshort accumRow[4 * MAX_WIDTH];
-      GLchan rgba[MAX_WIDTH][4];
-      GLint i;
-
-      for (i = 0; i < height; i++) {
-         GLshort *acc;
-         if (directAccess) {
-            acc = (GLshort *) rb->GetPointer(ctx, rb, xpos, ypos + i);
-         }
-         else {
-            rb->GetRow(ctx, rb, width, xpos, ypos + i, accumRow);
-            acc = accumRow;
-         }
-
-         /* read colors from color buffer */
-         _swrast_read_rgba_span(ctx, ctx->ReadBuffer->_ColorReadBuffer, width,
-                                xpos, ypos + i, CHAN_TYPE, rgba);
-
-         /* do load */
-         if (swrast->_IntegerAccumMode) {
-            /* just copy values in */
-            GLint j;
-            assert(swrast->_IntegerAccumScaler > 0.0);
-            assert(swrast->_IntegerAccumScaler <= 1.0);
-            for (j = 0; j < width; j++) {
-               acc[j * 4 + 0] = rgba[j][RCOMP];
-               acc[j * 4 + 1] = rgba[j][GCOMP];
-               acc[j * 4 + 2] = rgba[j][BCOMP];
-               acc[j * 4 + 3] = rgba[j][ACOMP];
-            }
-         }
-         else {
-            /* scaled integer (or float) accum buffer */
-            GLint j;
-            for (j = 0; j < width; j++) {
-               acc[j * 4 + 0] = (GLshort) ((GLfloat) rgba[j][RCOMP] * scale);
-               acc[j * 4 + 1] = (GLshort) ((GLfloat) rgba[j][GCOMP] * scale);
-               acc[j * 4 + 2] = (GLshort) ((GLfloat) rgba[j][BCOMP] * scale);
-               acc[j * 4 + 3] = (GLshort) ((GLfloat) rgba[j][ACOMP] * scale);
-            }
-         }
-
-         if (!directAccess) {
-            rb->PutRow(ctx, rb, width, xpos, ypos + i, accumRow, NULL);
-         }
-      }
-   }
-}
-
-
-static void
-accum_return(struct gl_context *ctx, GLfloat value,
-             GLint xpos, GLint ypos, GLint width, GLint height )
-{
-   SWcontext *swrast = SWRAST_CONTEXT(ctx);
-   struct gl_framebuffer *fb = ctx->DrawBuffer;
-   struct gl_renderbuffer *accumRb = fb->Attachment[BUFFER_ACCUM].Renderbuffer;
-   const GLboolean directAccess
-      = (accumRb->GetPointer(ctx, accumRb, 0, 0) != NULL);
-
-   static GLchan multTable[32768];
-   static GLfloat prevMult = 0.0;
-   const GLfloat mult = swrast->_IntegerAccumScaler;
-   const GLint max = MIN2((GLint) (256 / mult), 32767);
-
-   /* May have to leave optimized accum buffer mode */
-   if (swrast->_IntegerAccumMode && value != 1.0)
-      rescale_accum(ctx);
-
-   if (swrast->_IntegerAccumMode && swrast->_IntegerAccumScaler > 0) {
-      /* build lookup table to avoid many floating point multiplies */
-      GLint j;
-      assert(swrast->_IntegerAccumScaler <= 1.0);
-      if (mult != prevMult) {
-         for (j = 0; j < max; j++)
-            multTable[j] = IROUND((GLfloat) j * mult);
-         prevMult = mult;
-      }
-   }
-
-   if (accumRb->DataType == GL_SHORT ||
-       accumRb->DataType == GL_UNSIGNED_SHORT) {
-      const GLfloat scale = value * CHAN_MAXF / ACCUM_SCALE16;
-      GLuint buffer;
-      GLint i;
-
-      /* XXX maybe transpose the 'i' and 'buffer' loops??? */
-      for (i = 0; i < height; i++) {
-         GLshort accumRow[4 * MAX_WIDTH];
-         GLshort *acc;
-         SWspan span;
-
-         /* init color span */
-         INIT_SPAN(span, GL_BITMAP);
-         span.end = width;
-         span.arrayMask = SPAN_RGBA;
-         span.x = xpos;
-         span.y = ypos + i;
-
-         if (directAccess) {
-            acc = (GLshort *) accumRb->GetPointer(ctx, accumRb, xpos, ypos +i);
-         }
-         else {
-            accumRb->GetRow(ctx, accumRb, width, xpos, ypos + i, accumRow);
-            acc = accumRow;
-         }
-
-         /* get the colors to return */
-         if (swrast->_IntegerAccumMode) {
-            GLint j;
-            for (j = 0; j < width; j++) {
-               ASSERT(acc[j * 4 + 0] < max);
-               ASSERT(acc[j * 4 + 1] < max);
-               ASSERT(acc[j * 4 + 2] < max);
-               ASSERT(acc[j * 4 + 3] < max);
-               span.array->rgba[j][RCOMP] = multTable[acc[j * 4 + 0]];
-               span.array->rgba[j][GCOMP] = multTable[acc[j * 4 + 1]];
-               span.array->rgba[j][BCOMP] = multTable[acc[j * 4 + 2]];
-               span.array->rgba[j][ACOMP] = multTable[acc[j * 4 + 3]];
-            }
-         }
-         else {
-            /* scaled integer (or float) accum buffer */
-            GLint j;
-            for (j = 0; j < width; j++) {
-#if CHAN_BITS==32
-               GLchan r = acc[j * 4 + 0] * scale;
-               GLchan g = acc[j * 4 + 1] * scale;
-               GLchan b = acc[j * 4 + 2] * scale;
-               GLchan a = acc[j * 4 + 3] * scale;
-#else
-               GLint r = IROUND( (GLfloat) (acc[j * 4 + 0]) * scale );
-               GLint g = IROUND( (GLfloat) (acc[j * 4 + 1]) * scale );
-               GLint b = IROUND( (GLfloat) (acc[j * 4 + 2]) * scale );
-               GLint a = IROUND( (GLfloat) (acc[j * 4 + 3]) * scale );
-#endif
-               span.array->rgba[j][RCOMP] = CLAMP( r, 0, CHAN_MAX );
-               span.array->rgba[j][GCOMP] = CLAMP( g, 0, CHAN_MAX );
-               span.array->rgba[j][BCOMP] = CLAMP( b, 0, CHAN_MAX );
-               span.array->rgba[j][ACOMP] = CLAMP( a, 0, CHAN_MAX );
-            }
-         }
-
-         /* store colors */
-         for (buffer = 0; buffer < fb->_NumColorDrawBuffers; buffer++) {
-            struct gl_renderbuffer *rb = fb->_ColorDrawBuffers[buffer];
-            const GLboolean masking = (!ctx->Color.ColorMask[buffer][RCOMP] ||
-                                       !ctx->Color.ColorMask[buffer][GCOMP] ||
-                                       !ctx->Color.ColorMask[buffer][BCOMP] ||
-                                       !ctx->Color.ColorMask[buffer][ACOMP]);
-            if (masking) {
-               _swrast_mask_rgba_span(ctx, rb, &span, buffer);
-            }
-            rb->PutRow(ctx, rb, width, xpos, ypos + i, span.array->rgba, NULL);
-         }
-      }
-   }
-   else {
-      /* other types someday */
-   }
-}
-
-
-
-/**
- * Software fallback for glAccum.
- */
-void
-_swrast_Accum(struct gl_context *ctx, GLenum op, GLfloat value)
-{
-   SWcontext *swrast = SWRAST_CONTEXT(ctx);
-   GLint xpos, ypos, width, height;
-
-   if (swrast->NewState)
-      _swrast_validate_derived( ctx );
-
-   if (!ctx->DrawBuffer->Attachment[BUFFER_ACCUM].Renderbuffer) {
-      _mesa_warning(ctx, "Calling glAccum() without an accumulation buffer");
-      return;
-   }
-
-   if (!_mesa_check_conditional_render(ctx))
-      return;
-
-   swrast_render_start(ctx);
-
-   /* Compute region after calling swrast_render_start() so that we know the
-    * drawbuffer's size/bounds are up to date.
-    */
-   xpos = ctx->DrawBuffer->_Xmin;
-   ypos = ctx->DrawBuffer->_Ymin;
-   width =  ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin;
-   height = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin;
-
-   switch (op) {
-      case GL_ADD:
-         if (value != 0.0F) {
-            accum_add(ctx, value, xpos, ypos, width, height);
-	 }
-	 break;
-      case GL_MULT:
-         if (value != 1.0F) {
-            accum_mult(ctx, value, xpos, ypos, width, height);
-	 }
-	 break;
-      case GL_ACCUM:
-         if (value != 0.0F) {
-            accum_accum(ctx, value, xpos, ypos, width, height);
-         }
-	 break;
-      case GL_LOAD:
-         accum_load(ctx, value, xpos, ypos, width, height);
-	 break;
-      case GL_RETURN:
-         accum_return(ctx, value, xpos, ypos, width, height);
-	 break;
-      default:
-         _mesa_problem(ctx, "invalid mode in _swrast_Accum()");
-         break;
-   }
-
-   swrast_render_finish(ctx);
-}
diff --git a/mesalib/src/mesa/swrast/s_clear.c b/mesalib/src/mesa/swrast/s_clear.c
index 980d29bba..615747d69 100644
--- a/mesalib/src/mesa/swrast/s_clear.c
+++ b/mesalib/src/mesa/swrast/s_clear.c
@@ -23,13 +23,13 @@
  */
 
 #include "main/glheader.h"
+#include "main/accum.h"
 #include "main/colormac.h"
 #include "main/condrender.h"
 #include "main/macros.h"
 #include "main/imports.h"
 #include "main/mtypes.h"
 
-#include "s_accum.h"
 #include "s_context.h"
 #include "s_depth.h"
 #include "s_masking.h"
@@ -225,8 +225,7 @@ _swrast_Clear(struct gl_context *ctx, GLbitfield buffers)
          _swrast_clear_depth_buffer(ctx, ctx->DrawBuffer->_DepthBuffer);
       }
       if (buffers & BUFFER_BIT_ACCUM) {
-         _swrast_clear_accum_buffer(ctx,
-                       ctx->DrawBuffer->Attachment[BUFFER_ACCUM].Renderbuffer);
+         _mesa_clear_accum_buffer(ctx);
       }
       if (buffers & BUFFER_BIT_STENCIL) {
          _swrast_clear_stencil_buffer(ctx, ctx->DrawBuffer->_StencilBuffer);
diff --git a/mesalib/src/mesa/swrast/s_context.c b/mesalib/src/mesa/swrast/s_context.c
index 98702f068..924612578 100644
--- a/mesalib/src/mesa/swrast/s_context.c
+++ b/mesalib/src/mesa/swrast/s_context.c
@@ -597,7 +597,7 @@ _swrast_validate_derived( struct gl_context *ctx )
 
 #define SWRAST_DEBUG 0
 
-/* Public entrypoints:  See also s_accum.c, s_bitmap.c, etc.
+/* Public entrypoints:  See also s_bitmap.c, etc.
  */
 void
 _swrast_Quad( struct gl_context *ctx,
@@ -755,10 +755,6 @@ _swrast_CreateContext( struct gl_context *ctx )
    ctx->Driver.MapTexture = _swrast_map_texture;
    ctx->Driver.UnmapTexture = _swrast_unmap_texture;
 
-   /* Optimized Accum buffer */
-   swrast->_IntegerAccumMode = GL_FALSE;
-   swrast->_IntegerAccumScaler = 0.0;
-
    for (i = 0; i < MAX_TEXTURE_IMAGE_UNITS; i++)
       swrast->TextureSample[i] = NULL;
 
diff --git a/mesalib/src/mesa/swrast/s_context.h b/mesalib/src/mesa/swrast/s_context.h
index d3ba37819..446b990d9 100644
--- a/mesalib/src/mesa/swrast/s_context.h
+++ b/mesalib/src/mesa/swrast/s_context.h
@@ -203,11 +203,6 @@ typedef struct
    /** Indicates how each attrib is to be interpolated (lines/tris) */
    GLenum _InterpMode[FRAG_ATTRIB_MAX]; /* GL_FLAT or GL_SMOOTH (for now) */
 
-   /* Accum buffer temporaries.
-    */
-   GLboolean _IntegerAccumMode;	/**< Storing unscaled integers? */
-   GLfloat _IntegerAccumScaler;	/**< Implicit scale factor */
-
    /* Working values:
     */
    GLuint StippleCounter;    /**< Line stipple counter */
diff --git a/mesalib/src/mesa/swrast/s_copypix.c b/mesalib/src/mesa/swrast/s_copypix.c
index 3ba31f22c..3bdf48b25 100644
--- a/mesalib/src/mesa/swrast/s_copypix.c
+++ b/mesalib/src/mesa/swrast/s_copypix.c
@@ -610,6 +610,7 @@ fast_copy_pixels(struct gl_context *ctx,
    struct gl_framebuffer *dstFb = ctx->DrawBuffer;
    struct gl_renderbuffer *srcRb, *dstRb;
    GLint row, yStep;
+   void *temp;
 
    if (SWRAST_CONTEXT(ctx)->_RasterMask != 0x0 ||
        ctx->Pixel.ZoomX != 1.0F ||
@@ -667,14 +668,21 @@ fast_copy_pixels(struct gl_context *ctx,
       yStep = 1;
    }
 
+   temp = malloc(width * MAX_PIXEL_BYTES);
+   if (!temp) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels");
+      return GL_FALSE;
+   }
+
    for (row = 0; row < height; row++) {
-      GLuint temp[MAX_WIDTH][4];
       srcRb->GetRow(ctx, srcRb, width, srcX, srcY, temp);
       dstRb->PutRow(ctx, dstRb, width, dstX, dstY, temp, NULL);
       srcY += yStep;
       dstY += yStep;
    }
 
+   free(temp);
+
    return GL_TRUE;
 }
 
diff --git a/mesalib/src/mesa/swrast/s_renderbuffer.c b/mesalib/src/mesa/swrast/s_renderbuffer.c
new file mode 100644
index 000000000..7622e38fd
--- /dev/null
+++ b/mesalib/src/mesa/swrast/s_renderbuffer.c
@@ -0,0 +1,2034 @@
+/*
+ * 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.
+ */
+
+
+/**
+ * Functions for allocating/managing software-based renderbuffers.
+ * Also, routines for reading/writing software-based renderbuffer data as
+ * ubytes, ushorts, uints, etc.
+ */
+
+
+#include "main/glheader.h"
+#include "main/imports.h"
+#include "main/context.h"
+#include "main/fbobject.h"
+#include "main/formats.h"
+#include "main/mtypes.h"
+#include "main/renderbuffer.h"
+#include "swrast/s_renderbuffer.h"
+
+
+/*
+ * Routines for get/put values in common buffer formats follow.
+ */
+
+/* Returns a bytes per pixel of the DataType in the get/put span
+ * functions for at least a subset of the available combinations a
+ * renderbuffer can have.
+ *
+ * It would be nice to see gl_renderbuffer start talking about a
+ * gl_format instead of a GLenum DataType.
+ */
+static int
+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:
+      component_size = 4;
+      break;
+   case GL_UNSIGNED_SHORT:
+      component_size = 2;
+      break;
+   case GL_UNSIGNED_BYTE:
+      component_size = 1;
+      break;
+   default:
+      component_size = 1;
+      assert(0);
+   }
+
+   switch (rb->_BaseFormat) {
+   case GL_DEPTH_COMPONENT:
+   case GL_DEPTH_STENCIL:
+      return component_size;
+   default:
+      return 4 * component_size;
+   }
+}
+
+/* This is commonly used by most of the accessors. */
+static void *
+get_pointer_generic(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		    GLint x, GLint y)
+{
+   if (!rb->Data)
+      return NULL;
+
+   return ((char *) rb->Data +
+	   (y * rb->RowStride + x) * _mesa_get_format_bytes(rb->Format));
+}
+
+/* GetRow() implementation for formats where DataType matches the rb->Format.
+ */
+static void
+get_row_generic(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		GLuint count, GLint x, GLint y, void *values)
+{
+   void *src = rb->GetPointer(ctx, rb, x, y);
+   memcpy(values, src, count * _mesa_get_format_bytes(rb->Format));
+}
+
+/* Only used for float textures currently, but might also be used for
+ * RGBA8888, RGBA16, etc.
+ */
+static void
+get_values_generic(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		   GLuint count, const GLint x[], const GLint y[], void *values)
+{
+   int format_bytes = _mesa_get_format_bytes(rb->Format) / sizeof(GLfloat);
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      const void *src = rb->GetPointer(ctx, rb, x[i], y[i]);
+      char *dst = (char *) values + i * format_bytes;
+      memcpy(dst, src, format_bytes);
+   }
+}
+
+/* For the GL_RED/GL_RG/GL_RGB format/DataType combinations (and
+ * GL_LUMINANCE/GL_INTENSITY?), the Put functions are a matter of
+ * storing those initial components of the value per pixel into the
+ * destination.
+ */
+static void
+put_row_generic(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		GLuint count, GLint x, GLint y,
+		const void *values, const GLubyte *mask)
+{
+   void *row = rb->GetPointer(ctx, rb, x, y);
+   int format_bytes = _mesa_get_format_bytes(rb->Format) / sizeof(GLfloat);
+   int datatype_bytes = get_datatype_bytes(rb);
+   unsigned int i;
+
+   if (mask) {
+      for (i = 0; i < count; i++) {
+	 char *dst = (char *) row + i * format_bytes;
+	 const char *src = (const char *) values + i * datatype_bytes;
+
+         if (mask[i]) {
+	    memcpy(dst, src, format_bytes);
+         }
+      }
+   }
+   else {
+      for (i = 0; i < count; i++) {
+	 char *dst = (char *) row + i * format_bytes;
+	 const char *src = (const char *) values + i * datatype_bytes;
+	 memcpy(dst, src, format_bytes);
+      }
+   }
+}
+
+static void
+put_mono_row_generic(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		     GLuint count, GLint x, GLint y,
+		     const void *value, const GLubyte *mask)
+{
+   void *row = rb->GetPointer(ctx, rb, x, y);
+   int format_bytes = _mesa_get_format_bytes(rb->Format) / sizeof(GLfloat);
+   unsigned int i;
+
+   if (mask) {
+      for (i = 0; i < count; i++) {
+	 char *dst = (char *) row + i * format_bytes;
+         if (mask[i]) {
+	    memcpy(dst, value, format_bytes);
+         }
+      }
+   }
+   else {
+      for (i = 0; i < count; i++) {
+	 char *dst = (char *) row + i * format_bytes;
+	 memcpy(dst, value, format_bytes);
+      }
+   }
+}
+
+
+static void
+put_values_generic(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		   GLuint count, const GLint x[], const GLint y[],
+		   const void *values, const GLubyte *mask)
+{
+   int format_bytes = _mesa_get_format_bytes(rb->Format) / sizeof(GLfloat);
+   int datatype_bytes = get_datatype_bytes(rb);
+   unsigned int i;
+
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+	 void *dst = rb->GetPointer(ctx, rb, x[i], y[i]);
+	 const char *src = (const char *) values + i * datatype_bytes;
+	 memcpy(dst, src, format_bytes);
+      }
+   }
+}
+
+
+static void
+put_mono_values_generic(struct gl_context *ctx,
+			struct gl_renderbuffer *rb,
+			GLuint count, const GLint x[], const GLint y[],
+			const void *value, const GLubyte *mask)
+{
+   int format_bytes = _mesa_get_format_bytes(rb->Format) / sizeof(GLfloat);
+   unsigned int i;
+
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+	 void *dst = rb->GetPointer(ctx, rb, x[i], y[i]);
+	 memcpy(dst, value, format_bytes);
+      }
+   }
+}
+
+/**********************************************************************
+ * Functions for buffers of 1 X GLubyte values.
+ * Typically stencil.
+ */
+
+static void
+get_values_ubyte(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                 const GLint x[], const GLint y[], void *values)
+{
+   GLubyte *dst = (GLubyte *) values;
+   GLuint i;
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   for (i = 0; i < count; i++) {
+      const GLubyte *src = (GLubyte *) rb->Data + y[i] * rb->RowStride + x[i];
+      dst[i] = *src;
+   }
+}
+
+
+static void
+put_row_ubyte(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+              GLint x, GLint y, const void *values, const GLubyte *mask)
+{
+   const GLubyte *src = (const GLubyte *) values;
+   GLubyte *dst = (GLubyte *) rb->Data + y * rb->RowStride + x;
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   if (mask) {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         if (mask[i]) {
+            dst[i] = src[i];
+         }
+      }
+   }
+   else {
+      memcpy(dst, values, count * sizeof(GLubyte));
+   }
+}
+
+
+static void
+put_mono_row_ubyte(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                   GLint x, GLint y, const void *value, const GLubyte *mask)
+{
+   const GLubyte val = *((const GLubyte *) value);
+   GLubyte *dst = (GLubyte *) rb->Data + y * rb->RowStride + x;
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   if (mask) {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         if (mask[i]) {
+            dst[i] = val;
+         }
+      }
+   }
+   else {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         dst[i] = val;
+      }
+   }
+}
+
+
+static void
+put_values_ubyte(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                 const GLint x[], const GLint y[],
+                 const void *values, const GLubyte *mask)
+{
+   const GLubyte *src = (const GLubyte *) values;
+   GLuint i;
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+         GLubyte *dst = (GLubyte *) rb->Data + y[i] * rb->RowStride + x[i];
+         *dst = src[i];
+      }
+   }
+}
+
+
+static void
+put_mono_values_ubyte(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                      const GLint x[], const GLint y[],
+                      const void *value, const GLubyte *mask)
+{
+   const GLubyte val = *((const GLubyte *) value);
+   GLuint i;
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+         GLubyte *dst = (GLubyte *) rb->Data + y[i] * rb->RowStride + x[i];
+         *dst = val;
+      }
+   }
+}
+
+
+/**********************************************************************
+ * Functions for buffers of 1 X GLushort values.
+ * Typically depth/Z.
+ */
+
+static void
+get_values_ushort(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                  const GLint x[], const GLint y[], void *values)
+{
+   GLushort *dst = (GLushort *) values;
+   GLuint i;
+   ASSERT(rb->DataType == GL_UNSIGNED_SHORT);
+   for (i = 0; i < count; i++) {
+      const GLushort *src = (GLushort *) rb->Data + y[i] * rb->RowStride + x[i];
+      dst[i] = *src;
+   }
+}
+
+
+static void
+put_row_ushort(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+               GLint x, GLint y, const void *values, const GLubyte *mask)
+{
+   const GLushort *src = (const GLushort *) values;
+   GLushort *dst = (GLushort *) rb->Data + y * rb->RowStride + x;
+   ASSERT(rb->DataType == GL_UNSIGNED_SHORT);
+   if (mask) {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         if (mask[i]) {
+            dst[i] = src[i];
+         }
+      }
+   }
+   else {
+      memcpy(dst, src, count * sizeof(GLushort));
+   }
+}
+
+
+static void
+put_mono_row_ushort(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                    GLint x, GLint y, const void *value, const GLubyte *mask)
+{
+   const GLushort val = *((const GLushort *) value);
+   GLushort *dst = (GLushort *) rb->Data + y * rb->RowStride + x;
+   ASSERT(rb->DataType == GL_UNSIGNED_SHORT);
+   if (mask) {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         if (mask[i]) {
+            dst[i] = val;
+         }
+      }
+   }
+   else {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         dst[i] = val;
+      }
+   }
+}
+
+
+static void
+put_values_ushort(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                  const GLint x[], const GLint y[], const void *values,
+                  const GLubyte *mask)
+{
+   const GLushort *src = (const GLushort *) values;
+   GLuint i;
+   ASSERT(rb->DataType == GL_UNSIGNED_SHORT);
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+         GLushort *dst = (GLushort *) rb->Data + y[i] * rb->RowStride + x[i];
+         *dst = src[i];
+      }
+   }
+}
+ 
+
+static void
+put_mono_values_ushort(struct gl_context *ctx, struct gl_renderbuffer *rb,
+                       GLuint count, const GLint x[], const GLint y[],
+                       const void *value, const GLubyte *mask)
+{
+   const GLushort val = *((const GLushort *) value);
+   ASSERT(rb->DataType == GL_UNSIGNED_SHORT);
+   if (mask) {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         if (mask[i]) {
+            GLushort *dst = (GLushort *) rb->Data + y[i] * rb->RowStride + x[i];
+            *dst = val;
+         }
+      }
+   }
+   else {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         GLushort *dst = (GLushort *) rb->Data + y[i] * rb->RowStride + x[i];
+         *dst = val;
+      }
+   }
+}
+ 
+
+/**********************************************************************
+ * Functions for buffers of 1 X GLuint values.
+ * Typically depth/Z or color index.
+ */
+
+static void
+get_values_uint(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                const GLint x[], const GLint y[], void *values)
+{
+   GLuint *dst = (GLuint *) values;
+   GLuint i;
+   ASSERT(rb->DataType == GL_UNSIGNED_INT ||
+          rb->DataType == GL_UNSIGNED_INT_24_8_EXT);
+   for (i = 0; i < count; i++) {
+      const GLuint *src = (GLuint *) rb->Data + y[i] * rb->RowStride + x[i];
+      dst[i] = *src;
+   }
+}
+
+
+static void
+put_row_uint(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+             GLint x, GLint y, const void *values, const GLubyte *mask)
+{
+   const GLuint *src = (const GLuint *) values;
+   GLuint *dst = (GLuint *) rb->Data + y * rb->RowStride + x;
+   ASSERT(rb->DataType == GL_UNSIGNED_INT ||
+          rb->DataType == GL_UNSIGNED_INT_24_8_EXT);
+   if (mask) {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         if (mask[i]) {
+            dst[i] = src[i];
+         }
+      }
+   }
+   else {
+      memcpy(dst, src, count * sizeof(GLuint));
+   }
+}
+
+
+static void
+put_mono_row_uint(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                  GLint x, GLint y, const void *value, const GLubyte *mask)
+{
+   const GLuint val = *((const GLuint *) value);
+   GLuint *dst = (GLuint *) rb->Data + y * rb->RowStride + x;
+   ASSERT(rb->DataType == GL_UNSIGNED_INT ||
+          rb->DataType == GL_UNSIGNED_INT_24_8_EXT);
+   if (mask) {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         if (mask[i]) {
+            dst[i] = val;
+         }
+      }
+   }
+   else {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         dst[i] = val;
+      }
+   }
+}
+
+
+static void
+put_values_uint(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                const GLint x[], const GLint y[], const void *values,
+                const GLubyte *mask)
+{
+   const GLuint *src = (const GLuint *) values;
+   GLuint i;
+   ASSERT(rb->DataType == GL_UNSIGNED_INT ||
+          rb->DataType == GL_UNSIGNED_INT_24_8_EXT);
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+         GLuint *dst = (GLuint *) rb->Data + y[i] * rb->RowStride + x[i];
+         *dst = src[i];
+      }
+   }
+}
+
+
+static void
+put_mono_values_uint(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                     const GLint x[], const GLint y[], const void *value,
+                     const GLubyte *mask)
+{
+   const GLuint val = *((const GLuint *) value);
+   GLuint i;
+   ASSERT(rb->DataType == GL_UNSIGNED_INT ||
+          rb->DataType == GL_UNSIGNED_INT_24_8_EXT);
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+         GLuint *dst = (GLuint *) rb->Data + y[i] * rb->RowStride + x[i];
+         *dst = val;
+      }
+   }
+}
+
+
+/**********************************************************************
+ * Functions for buffers of 3 X GLubyte (or GLbyte) values.
+ * Typically color buffers.
+ * NOTE: the incoming and outgoing colors are RGBA!  We ignore incoming
+ * alpha values and return 255 for outgoing alpha values.
+ */
+
+static void *
+get_pointer_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb,
+                   GLint x, GLint y)
+{
+   ASSERT(rb->Format == MESA_FORMAT_RGB888);
+   /* No direct access since this buffer is RGB but caller will be
+    * treating it as if it were RGBA.
+    */
+   return NULL;
+}
+
+
+static void
+get_row_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+               GLint x, GLint y, void *values)
+{
+   const GLubyte *src = ((const GLubyte *) rb->Data) +
+					   3 * (y * rb->RowStride + x);
+   GLubyte *dst = (GLubyte *) values;
+   GLuint i;
+   ASSERT(rb->Format == MESA_FORMAT_RGB888);
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   for (i = 0; i < count; i++) {
+      dst[i * 4 + 0] = src[i * 3 + 0];
+      dst[i * 4 + 1] = src[i * 3 + 1];
+      dst[i * 4 + 2] = src[i * 3 + 2];
+      dst[i * 4 + 3] = 255;
+   }
+}
+
+
+static void
+get_values_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                  const GLint x[], const GLint y[], void *values)
+{
+   GLubyte *dst = (GLubyte *) values;
+   GLuint i;
+   ASSERT(rb->Format == MESA_FORMAT_RGB888);
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   for (i = 0; i < count; i++) {
+      const GLubyte *src
+         = (GLubyte *) rb->Data + 3 * (y[i] * rb->RowStride + x[i]);
+      dst[i * 4 + 0] = src[0];
+      dst[i * 4 + 1] = src[1];
+      dst[i * 4 + 2] = src[2];
+      dst[i * 4 + 3] = 255;
+   }
+}
+
+
+static void
+put_row_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+               GLint x, GLint y, const void *values, const GLubyte *mask)
+{
+   /* note: incoming values are RGB+A! */
+   const GLubyte *src = (const GLubyte *) values;
+   GLubyte *dst = (GLubyte *) rb->Data + 3 * (y * rb->RowStride + x);
+   GLuint i;
+   ASSERT(rb->Format == MESA_FORMAT_RGB888);
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+         dst[i * 3 + 0] = src[i * 4 + 0];
+         dst[i * 3 + 1] = src[i * 4 + 1];
+         dst[i * 3 + 2] = src[i * 4 + 2];
+      }
+   }
+}
+
+
+static void
+put_row_rgb_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                   GLint x, GLint y, const void *values, const GLubyte *mask)
+{
+   /* note: incoming values are RGB+A! */
+   const GLubyte *src = (const GLubyte *) values;
+   GLubyte *dst = (GLubyte *) rb->Data + 3 * (y * rb->RowStride + x);
+   GLuint i;
+   ASSERT(rb->Format == MESA_FORMAT_RGB888);
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+         dst[i * 3 + 0] = src[i * 3 + 0];
+         dst[i * 3 + 1] = src[i * 3 + 1];
+         dst[i * 3 + 2] = src[i * 3 + 2];
+      }
+   }
+}
+
+
+static void
+put_mono_row_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                    GLint x, GLint y, const void *value, const GLubyte *mask)
+{
+   /* note: incoming value is RGB+A! */
+   const GLubyte val0 = ((const GLubyte *) value)[0];
+   const GLubyte val1 = ((const GLubyte *) value)[1];
+   const GLubyte val2 = ((const GLubyte *) value)[2];
+   GLubyte *dst = (GLubyte *) rb->Data + 3 * (y * rb->RowStride + x);
+   ASSERT(rb->Format == MESA_FORMAT_RGB888);
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   if (!mask && val0 == val1 && val1 == val2) {
+      /* optimized case */
+      memset(dst, val0, 3 * count);
+   }
+   else {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         if (!mask || mask[i]) {
+            dst[i * 3 + 0] = val0;
+            dst[i * 3 + 1] = val1;
+            dst[i * 3 + 2] = val2;
+         }
+      }
+   }
+}
+
+
+static void
+put_values_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                  const GLint x[], const GLint y[], const void *values,
+                  const GLubyte *mask)
+{
+   /* note: incoming values are RGB+A! */
+   const GLubyte *src = (const GLubyte *) values;
+   GLuint i;
+   ASSERT(rb->Format == MESA_FORMAT_RGB888);
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+         GLubyte *dst = (GLubyte *) rb->Data + 3 * (y[i] * rb->RowStride + x[i]);
+         dst[0] = src[i * 4 + 0];
+         dst[1] = src[i * 4 + 1];
+         dst[2] = src[i * 4 + 2];
+      }
+   }
+}
+
+
+static void
+put_mono_values_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb,
+                       GLuint count, const GLint x[], const GLint y[],
+                       const void *value, const GLubyte *mask)
+{
+   /* note: incoming value is RGB+A! */
+   const GLubyte val0 = ((const GLubyte *) value)[0];
+   const GLubyte val1 = ((const GLubyte *) value)[1];
+   const GLubyte val2 = ((const GLubyte *) value)[2];
+   GLuint i;
+   ASSERT(rb->Format == MESA_FORMAT_RGB888);
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+         GLubyte *dst = ((GLubyte *) rb->Data) +
+				     3 * (y[i] * rb->RowStride + x[i]);
+         dst[0] = val0;
+         dst[1] = val1;
+         dst[2] = val2;
+      }
+   }
+}
+
+
+/**********************************************************************
+ * Functions for buffers of 4 X GLubyte (or GLbyte) values.
+ * Typically color buffers.
+ */
+
+static void
+get_values_ubyte4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                  const GLint x[], const GLint y[], void *values)
+{
+   /* treat 4*GLubyte as 1*GLuint */
+   GLuint *dst = (GLuint *) values;
+   GLuint i;
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   ASSERT(rb->Format == MESA_FORMAT_RGBA8888 ||
+          rb->Format == MESA_FORMAT_RGBA8888_REV);
+   for (i = 0; i < count; i++) {
+      const GLuint *src = (GLuint *) rb->Data + (y[i] * rb->RowStride + x[i]);
+      dst[i] = *src;
+   }
+}
+
+
+static void
+put_row_ubyte4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+               GLint x, GLint y, const void *values, const GLubyte *mask)
+{
+   /* treat 4*GLubyte as 1*GLuint */
+   const GLuint *src = (const GLuint *) values;
+   GLuint *dst = (GLuint *) rb->Data + (y * rb->RowStride + x);
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   ASSERT(rb->Format == MESA_FORMAT_RGBA8888 ||
+          rb->Format == MESA_FORMAT_RGBA8888_REV);
+   if (mask) {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         if (mask[i]) {
+            dst[i] = src[i];
+         }
+      }
+   }
+   else {
+      memcpy(dst, src, 4 * count * sizeof(GLubyte));
+   }
+}
+
+
+static void
+put_row_rgb_ubyte4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                   GLint x, GLint y, const void *values, const GLubyte *mask)
+{
+   /* Store RGB values in RGBA buffer */
+   const GLubyte *src = (const GLubyte *) values;
+   GLubyte *dst = (GLubyte *) rb->Data + 4 * (y * rb->RowStride + x);
+   GLuint i;
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   ASSERT(rb->Format == MESA_FORMAT_RGBA8888 ||
+          rb->Format == MESA_FORMAT_RGBA8888_REV);
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+         dst[i * 4 + 0] = src[i * 3 + 0];
+         dst[i * 4 + 1] = src[i * 3 + 1];
+         dst[i * 4 + 2] = src[i * 3 + 2];
+         dst[i * 4 + 3] = 0xff;
+      }
+   }
+}
+
+
+static void
+put_mono_row_ubyte4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                    GLint x, GLint y, const void *value, const GLubyte *mask)
+{
+   /* treat 4*GLubyte as 1*GLuint */
+   const GLuint val = *((const GLuint *) value);
+   GLuint *dst = (GLuint *) rb->Data + (y * rb->RowStride + x);
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   ASSERT(rb->Format == MESA_FORMAT_RGBA8888 ||
+          rb->Format == MESA_FORMAT_RGBA8888_REV);
+   if (!mask && val == 0) {
+      /* common case */
+      memset(dst, 0, count * 4 * sizeof(GLubyte));
+   }
+   else {
+      /* general case */
+      if (mask) {
+         GLuint i;
+         for (i = 0; i < count; i++) {
+            if (mask[i]) {
+               dst[i] = val;
+            }
+         }
+      }
+      else {
+         GLuint i;
+         for (i = 0; i < count; i++) {
+            dst[i] = val;
+         }
+      }
+   }
+}
+
+
+static void
+put_values_ubyte4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                  const GLint x[], const GLint y[], const void *values,
+                  const GLubyte *mask)
+{
+   /* treat 4*GLubyte as 1*GLuint */
+   const GLuint *src = (const GLuint *) values;
+   GLuint i;
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   ASSERT(rb->Format == MESA_FORMAT_RGBA8888 ||
+          rb->Format == MESA_FORMAT_RGBA8888_REV);
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+         GLuint *dst = (GLuint *) rb->Data + (y[i] * rb->RowStride + x[i]);
+         *dst = src[i];
+      }
+   }
+}
+
+
+static void
+put_mono_values_ubyte4(struct gl_context *ctx, struct gl_renderbuffer *rb,
+                       GLuint count, const GLint x[], const GLint y[],
+                       const void *value, const GLubyte *mask)
+{
+   /* treat 4*GLubyte as 1*GLuint */
+   const GLuint val = *((const GLuint *) value);
+   GLuint i;
+   ASSERT(rb->DataType == GL_UNSIGNED_BYTE);
+   ASSERT(rb->Format == MESA_FORMAT_RGBA8888 ||
+          rb->Format == MESA_FORMAT_RGBA8888_REV);
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+         GLuint *dst = (GLuint *) rb->Data + (y[i] * rb->RowStride + x[i]);
+         *dst = val;
+      }
+   }
+}
+
+
+/**********************************************************************
+ * Functions for buffers of 4 X GLushort (or GLshort) values.
+ * Typically accum buffer.
+ */
+
+static void
+get_values_ushort4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                   const GLint x[], const GLint y[], void *values)
+{
+   GLushort *dst = (GLushort *) values;
+   GLuint i;
+   ASSERT(rb->DataType == GL_UNSIGNED_SHORT || rb->DataType == GL_SHORT);
+   for (i = 0; i < count; i++) {
+      const GLushort *src
+         = (GLushort *) rb->Data + 4 * (y[i] * rb->RowStride + x[i]);
+      dst[i] = *src;
+   }
+}
+
+
+static void
+put_row_ushort4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                GLint x, GLint y, const void *values, const GLubyte *mask)
+{
+   const GLushort *src = (const GLushort *) values;
+   GLushort *dst = (GLushort *) rb->Data + 4 * (y * rb->RowStride + x);
+   ASSERT(rb->DataType == GL_UNSIGNED_SHORT || rb->DataType == GL_SHORT);
+   if (mask) {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         if (mask[i]) {
+            dst[i * 4 + 0] = src[i * 4 + 0];
+            dst[i * 4 + 1] = src[i * 4 + 1];
+            dst[i * 4 + 2] = src[i * 4 + 2];
+            dst[i * 4 + 3] = src[i * 4 + 3];
+         }
+      }
+   }
+   else {
+      memcpy(dst, src, 4 * count * sizeof(GLushort));
+   }
+}
+
+
+static void
+put_row_rgb_ushort4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                    GLint x, GLint y, const void *values, const GLubyte *mask)
+{
+   /* Put RGB values in RGBA buffer */
+   const GLushort *src = (const GLushort *) values;
+   GLushort *dst = (GLushort *) rb->Data + 4 * (y * rb->RowStride + x);
+   ASSERT(rb->DataType == GL_UNSIGNED_SHORT || rb->DataType == GL_SHORT);
+   if (mask) {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         if (mask[i]) {
+            dst[i * 4 + 0] = src[i * 3 + 0];
+            dst[i * 4 + 1] = src[i * 3 + 1];
+            dst[i * 4 + 2] = src[i * 3 + 2];
+            dst[i * 4 + 3] = 0xffff;
+         }
+      }
+   }
+   else {
+      memcpy(dst, src, 4 * count * sizeof(GLushort));
+   }
+}
+
+
+static void
+put_mono_row_ushort4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                     GLint x, GLint y, const void *value, const GLubyte *mask)
+{
+   const GLushort val0 = ((const GLushort *) value)[0];
+   const GLushort val1 = ((const GLushort *) value)[1];
+   const GLushort val2 = ((const GLushort *) value)[2];
+   const GLushort val3 = ((const GLushort *) value)[3];
+   GLushort *dst = (GLushort *) rb->Data + 4 * (y * rb->RowStride + x);
+   ASSERT(rb->DataType == GL_UNSIGNED_SHORT || rb->DataType == GL_SHORT);
+   if (!mask && val0 == 0 && val1 == 0 && val2 == 0 && val3 == 0) {
+      /* common case for clearing accum buffer */
+      memset(dst, 0, count * 4 * sizeof(GLushort));
+   }
+   else {
+      GLuint i;
+      for (i = 0; i < count; i++) {
+         if (!mask || mask[i]) {
+            dst[i * 4 + 0] = val0;
+            dst[i * 4 + 1] = val1;
+            dst[i * 4 + 2] = val2;
+            dst[i * 4 + 3] = val3;
+         }
+      }
+   }
+}
+
+
+static void
+put_values_ushort4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+                   const GLint x[], const GLint y[], const void *values,
+                   const GLubyte *mask)
+{
+   const GLushort *src = (const GLushort *) values;
+   GLuint i;
+   ASSERT(rb->DataType == GL_UNSIGNED_SHORT || rb->DataType == GL_SHORT);
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+         GLushort *dst =
+            ((GLushort *) rb->Data) + 4 * (y[i] * rb->RowStride + x[i]);
+         dst[0] = src[i * 4 + 0];
+         dst[1] = src[i * 4 + 1];
+         dst[2] = src[i * 4 + 2];
+         dst[3] = src[i * 4 + 3];
+      }
+   }
+}
+
+
+static void
+put_mono_values_ushort4(struct gl_context *ctx, struct gl_renderbuffer *rb,
+                        GLuint count, const GLint x[], const GLint y[],
+                        const void *value, const GLubyte *mask)
+{
+   const GLushort val0 = ((const GLushort *) value)[0];
+   const GLushort val1 = ((const GLushort *) value)[1];
+   const GLushort val2 = ((const GLushort *) value)[2];
+   const GLushort val3 = ((const GLushort *) value)[3];
+   GLuint i;
+   ASSERT(rb->DataType == GL_UNSIGNED_SHORT || rb->DataType == GL_SHORT);
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+         GLushort *dst = ((GLushort *) rb->Data) +
+				       4 * (y[i] * rb->RowStride + x[i]);
+         dst[0] = val0;
+         dst[1] = val1;
+         dst[2] = val2;
+         dst[3] = val3;
+      }
+   }
+}
+
+/**********************************************************************
+ * Functions for MESA_FORMAT_R8.
+ */
+static void
+get_row_r8(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+	   GLint x, GLint y, void *values)
+{
+   const GLubyte *src = rb->GetPointer(ctx, rb, x, y);
+   GLuint *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      dst[i] = 0xff000000 | src[i];
+   }
+}
+
+static void
+get_values_r8(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+	      const GLint x[], const GLint y[], void *values)
+{
+   GLuint *dst = (GLuint *) values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      const GLubyte *src = rb->GetPointer(ctx, rb, x[i], y[i]);
+      dst[i] = 0xff000000 | *src;
+   }
+}
+
+/**********************************************************************
+ * Functions for MESA_FORMAT_GR88.
+ */
+static void
+get_row_rg88(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+	     GLint x, GLint y, void *values)
+{
+   const GLushort *src = rb->GetPointer(ctx, rb, x, y);
+   GLuint *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      dst[i] = 0xff000000 | src[i];
+   }
+}
+
+static void
+get_values_rg88(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		GLuint count, const GLint x[], const GLint y[], void *values)
+{
+   GLuint *dst = (GLuint *) values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      const GLshort *src = rb->GetPointer(ctx, rb, x[i], y[i]);
+      dst[i] = 0xff000000 | *src;
+   }
+}
+
+/**********************************************************************
+ * Functions for MESA_FORMAT_R16.
+ */
+static void
+get_row_r16(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+	    GLint x, GLint y, void *values)
+{
+   const GLushort *src = rb->GetPointer(ctx, rb, x, y);
+   GLushort *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      dst[i * 4 + RCOMP] = src[i];
+      dst[i * 4 + GCOMP] = 0;
+      dst[i * 4 + BCOMP] = 0;
+      dst[i * 4 + ACOMP] = 0xffff;
+   }
+}
+
+static void
+get_values_r16(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+	       const GLint x[], const GLint y[], void *values)
+{
+   GLushort *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      const GLushort *src = rb->GetPointer(ctx, rb, x[i], y[i]);
+      dst[i * 4 + RCOMP] = *src;
+      dst[i * 4 + GCOMP] = 0;
+      dst[i * 4 + BCOMP] = 0;
+      dst[i * 4 + ACOMP] = 0xffff;
+   }
+}
+
+/**********************************************************************
+ * Functions for MESA_FORMAT_RG1616.
+ */
+static void
+get_row_rg1616(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
+	       GLint x, GLint y, void *values)
+{
+   const GLushort *src = rb->GetPointer(ctx, rb, x, y);
+   GLushort *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      dst[i * 4 + RCOMP] = src[i * 2];
+      dst[i * 4 + GCOMP] = src[i * 2 + 1];
+      dst[i * 4 + BCOMP] = 0;
+      dst[i * 4 + ACOMP] = 0xffff;
+   }
+}
+
+static void
+get_values_rg1616(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		  GLuint count, const GLint x[], const GLint y[], void *values)
+{
+   GLushort *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      const GLshort *src = rb->GetPointer(ctx, rb, x[i], y[i]);
+      dst[i * 4 + RCOMP] = src[0];
+      dst[i * 4 + GCOMP] = src[1];
+      dst[i * 4 + BCOMP] = 0;
+      dst[i * 4 + ACOMP] = 0xffff;
+   }
+}
+
+/**********************************************************************
+ * Functions for MESA_FORMAT_INTENSITY_FLOAT32.
+ */
+static void
+get_row_i_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		  GLuint count, GLint x, GLint y, void *values)
+{
+   const GLfloat *src = rb->GetPointer(ctx, rb, x, y);
+   GLfloat *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      dst[i * 4 + RCOMP] =
+      dst[i * 4 + GCOMP] =
+      dst[i * 4 + BCOMP] =
+      dst[i * 4 + ACOMP] = src[i];
+   }
+}
+
+static void
+get_values_i_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		     GLuint count, const GLint x[], const GLint y[],
+		     void *values)
+{
+   GLfloat *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      const GLfloat *src = rb->GetPointer(ctx, rb, x[i], y[i]);
+      dst[i * 4 + RCOMP] =
+      dst[i * 4 + GCOMP] =
+      dst[i * 4 + BCOMP] =
+      dst[i * 4 + ACOMP] = src[0];
+   }
+}
+
+/**********************************************************************
+ * Functions for MESA_FORMAT_LUMINANCE_FLOAT32.
+ */
+static void
+get_row_l_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		  GLuint count, GLint x, GLint y, void *values)
+{
+   const GLfloat *src = rb->GetPointer(ctx, rb, x, y);
+   GLfloat *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      dst[i * 4 + RCOMP] =
+      dst[i * 4 + GCOMP] =
+      dst[i * 4 + BCOMP] = src[i];
+      dst[i * 4 + ACOMP] = 1.0;
+   }
+}
+
+static void
+get_values_l_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		     GLuint count, const GLint x[], const GLint y[],
+		     void *values)
+{
+   GLfloat *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      const GLfloat *src = rb->GetPointer(ctx, rb, x[i], y[i]);
+      dst[i * 4 + RCOMP] =
+      dst[i * 4 + GCOMP] =
+      dst[i * 4 + BCOMP] = src[0];
+      dst[i * 4 + ACOMP] = 1.0;
+   }
+}
+
+/**********************************************************************
+ * Functions for MESA_FORMAT_ALPHA_FLOAT32.
+ */
+static void
+get_row_a_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		  GLuint count, GLint x, GLint y, void *values)
+{
+   const GLfloat *src = rb->GetPointer(ctx, rb, x, y);
+   GLfloat *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      dst[i * 4 + RCOMP] = 0.0;
+      dst[i * 4 + GCOMP] = 0.0;
+      dst[i * 4 + BCOMP] = 0.0;
+      dst[i * 4 + ACOMP] = src[i];
+   }
+}
+
+static void
+get_values_a_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		     GLuint count, const GLint x[], const GLint y[],
+		     void *values)
+{
+   GLfloat *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      const GLfloat *src = rb->GetPointer(ctx, rb, x[i], y[i]);
+      dst[i * 4 + RCOMP] = 0.0;
+      dst[i * 4 + GCOMP] = 0.0;
+      dst[i * 4 + BCOMP] = 0.0;
+      dst[i * 4 + ACOMP] = src[0];
+   }
+}
+
+static void
+put_row_a_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		  GLuint count, GLint x, GLint y,
+		  const void *values, const GLubyte *mask)
+{
+   float *dst = rb->GetPointer(ctx, rb, x, y);
+   const float *src = values;
+   unsigned int i;
+
+   if (mask) {
+      for (i = 0; i < count; i++) {
+         if (mask[i]) {
+	    dst[i] = src[i * 4 + ACOMP];
+         }
+      }
+   }
+   else {
+      for (i = 0; i < count; i++) {
+	 dst[i] = src[i * 4 + ACOMP];
+      }
+   }
+}
+
+static void
+put_mono_row_a_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		       GLuint count, GLint x, GLint y,
+		       const void *value, const GLubyte *mask)
+{
+   float *dst = rb->GetPointer(ctx, rb, x, y);
+   const float *src = value;
+   unsigned int i;
+
+   if (mask) {
+      for (i = 0; i < count; i++) {
+         if (mask[i]) {
+	    dst[i] = src[ACOMP];
+         }
+      }
+   }
+   else {
+      for (i = 0; i < count; i++) {
+	 dst[i] = src[ACOMP];
+      }
+   }
+}
+
+static void
+put_values_a_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		     GLuint count, const GLint x[], const GLint y[],
+		     const void *values, const GLubyte *mask)
+{
+   const float *src = values;
+   unsigned int i;
+
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+	 float *dst = rb->GetPointer(ctx, rb, x[i], y[i]);
+
+	 *dst = src[i * 4 + ACOMP];
+      }
+   }
+}
+
+static void
+put_mono_values_a_float32(struct gl_context *ctx,
+			  struct gl_renderbuffer *rb,
+			  GLuint count, const GLint x[], const GLint y[],
+			  const void *value, const GLubyte *mask)
+{
+   const float *src = value;
+   unsigned int i;
+
+   for (i = 0; i < count; i++) {
+      if (!mask || mask[i]) {
+	 float *dst = rb->GetPointer(ctx, rb, x[i], y[i]);
+	 *dst = src[ACOMP];
+      }
+   }
+}
+
+/**********************************************************************
+ * Functions for MESA_FORMAT_R_FLOAT32.
+ */
+static void
+get_row_r_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		  GLuint count, GLint x, GLint y, void *values)
+{
+   const GLfloat *src = rb->GetPointer(ctx, rb, x, y);
+   GLfloat *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      dst[i * 4 + RCOMP] = src[i];
+      dst[i * 4 + GCOMP] = 0.0;
+      dst[i * 4 + BCOMP] = 0.0;
+      dst[i * 4 + ACOMP] = 1.0;
+   }
+}
+
+static void
+get_values_r_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		     GLuint count, const GLint x[], const GLint y[],
+		     void *values)
+{
+   GLfloat *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      const GLfloat *src = rb->GetPointer(ctx, rb, x[i], y[i]);
+      dst[i * 4 + RCOMP] = src[0];
+      dst[i * 4 + GCOMP] = 0.0;
+      dst[i * 4 + BCOMP] = 0.0;
+      dst[i * 4 + ACOMP] = 1.0;
+   }
+}
+
+/**********************************************************************
+ * Functions for MESA_FORMAT_RG_FLOAT32.
+ */
+static void
+get_row_rg_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		   GLuint count, GLint x, GLint y, void *values)
+{
+   const GLfloat *src = rb->GetPointer(ctx, rb, x, y);
+   GLfloat *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      dst[i * 4 + RCOMP] = src[i * 2 + 0];
+      dst[i * 4 + GCOMP] = src[i * 2 + 1];
+      dst[i * 4 + BCOMP] = 0.0;
+      dst[i * 4 + ACOMP] = 1.0;
+   }
+}
+
+static void
+get_values_rg_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
+		      GLuint count, const GLint x[], const GLint y[],
+		      void *values)
+{
+   GLfloat *dst = values;
+   GLuint i;
+
+   for (i = 0; i < count; i++) {
+      const GLfloat *src = rb->GetPointer(ctx, rb, x[i], y[i]);
+      dst[i * 4 + RCOMP] = src[0];
+      dst[i * 4 + GCOMP] = src[1];
+      dst[i * 4 + BCOMP] = 0.0;
+      dst[i * 4 + ACOMP] = 1.0;
+   }
+}
+
+/**
+ * This is the default software fallback for gl_renderbuffer's span
+ * access functions.
+ *
+ * The assumptions are that rb->Data will be a pointer to (0,0), that pixels
+ * are packed in the type of rb->Format, and that subsequent rows appear
+ * rb->RowStride pixels later.
+ */
+void
+_swrast_set_renderbuffer_accessors(struct gl_renderbuffer *rb)
+{
+   rb->GetPointer = get_pointer_generic;
+   rb->GetRow = get_row_generic;
+
+   switch (rb->Format) {
+   case MESA_FORMAT_RGB888:
+      rb->DataType = GL_UNSIGNED_BYTE;
+      rb->GetPointer = get_pointer_ubyte3;
+      rb->GetRow = get_row_ubyte3;
+      rb->GetValues = get_values_ubyte3;
+      rb->PutRow = put_row_ubyte3;
+      rb->PutRowRGB = put_row_rgb_ubyte3;
+      rb->PutMonoRow = put_mono_row_ubyte3;
+      rb->PutValues = put_values_ubyte3;
+      rb->PutMonoValues = put_mono_values_ubyte3;
+      break;
+
+   case MESA_FORMAT_RGBA8888:
+   case MESA_FORMAT_RGBA8888_REV:
+      rb->DataType = GL_UNSIGNED_BYTE;
+      rb->GetValues = get_values_ubyte4;
+      rb->PutRow = put_row_ubyte4;
+      rb->PutRowRGB = put_row_rgb_ubyte4;
+      rb->PutMonoRow = put_mono_row_ubyte4;
+      rb->PutValues = put_values_ubyte4;
+      rb->PutMonoValues = put_mono_values_ubyte4;
+      break;
+
+   case MESA_FORMAT_R8:
+      rb->DataType = GL_UNSIGNED_BYTE;
+      rb->GetValues = get_values_r8;
+      rb->GetRow = get_row_r8;
+      rb->PutRow = put_row_generic;
+      rb->PutRowRGB = put_row_generic;
+      rb->PutMonoRow = put_mono_row_generic;
+      rb->PutValues = put_values_generic;
+      rb->PutMonoValues = put_mono_values_generic;
+      break;
+
+   case MESA_FORMAT_GR88:
+      rb->DataType = GL_UNSIGNED_BYTE;
+      rb->GetValues = get_values_rg88;
+      rb->GetRow = get_row_rg88;
+      rb->PutRow = put_row_generic;
+      rb->PutRowRGB = put_row_generic;
+      rb->PutMonoRow = put_mono_row_generic;
+      rb->PutValues = put_values_generic;
+      rb->PutMonoValues = put_mono_values_generic;
+      break;
+
+   case MESA_FORMAT_R16:
+      rb->DataType = GL_UNSIGNED_SHORT;
+      rb->GetValues = get_values_r16;
+      rb->GetRow = get_row_r16;
+      rb->PutRow = put_row_generic;
+      rb->PutRowRGB = put_row_generic;
+      rb->PutMonoRow = put_mono_row_generic;
+      rb->PutValues = put_values_generic;
+      rb->PutMonoValues = put_mono_values_generic;
+      break;
+
+   case MESA_FORMAT_RG1616:
+      rb->DataType = GL_UNSIGNED_SHORT;
+      rb->GetValues = get_values_rg1616;
+      rb->GetRow = get_row_rg1616;
+      rb->PutRow = put_row_generic;
+      rb->PutRowRGB = put_row_generic;
+      rb->PutMonoRow = put_mono_row_generic;
+      rb->PutValues = put_values_generic;
+      rb->PutMonoValues = put_mono_values_generic;
+      break;
+
+   case MESA_FORMAT_SIGNED_RGBA_16:
+      rb->DataType = GL_SHORT;
+      rb->GetValues = get_values_ushort4;
+      rb->PutRow = put_row_ushort4;
+      rb->PutRowRGB = put_row_rgb_ushort4;
+      rb->PutMonoRow = put_mono_row_ushort4;
+      rb->PutValues = put_values_ushort4;
+      rb->PutMonoValues = put_mono_values_ushort4;
+      break;
+
+   case MESA_FORMAT_S8:
+      rb->DataType = GL_UNSIGNED_BYTE;
+      rb->GetValues = get_values_ubyte;
+      rb->PutRow = put_row_ubyte;
+      rb->PutRowRGB = NULL;
+      rb->PutMonoRow = put_mono_row_ubyte;
+      rb->PutValues = put_values_ubyte;
+      rb->PutMonoValues = put_mono_values_ubyte;
+      break;
+
+   case MESA_FORMAT_Z16:
+      rb->DataType = GL_UNSIGNED_SHORT;
+      rb->GetValues = get_values_ushort;
+      rb->PutRow = put_row_ushort;
+      rb->PutRowRGB = NULL;
+      rb->PutMonoRow = put_mono_row_ushort;
+      rb->PutValues = put_values_ushort;
+      rb->PutMonoValues = put_mono_values_ushort;
+      break;
+
+   case MESA_FORMAT_Z32:
+   case MESA_FORMAT_X8_Z24:
+   case MESA_FORMAT_Z24_X8:
+      rb->DataType = GL_UNSIGNED_INT;
+      rb->GetValues = get_values_uint;
+      rb->PutRow = put_row_uint;
+      rb->PutRowRGB = NULL;
+      rb->PutMonoRow = put_mono_row_uint;
+      rb->PutValues = put_values_uint;
+      rb->PutMonoValues = put_mono_values_uint;
+      break;
+
+   case MESA_FORMAT_Z24_S8:
+   case MESA_FORMAT_S8_Z24:
+      rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
+      rb->GetValues = get_values_uint;
+      rb->PutRow = put_row_uint;
+      rb->PutRowRGB = NULL;
+      rb->PutMonoRow = put_mono_row_uint;
+      rb->PutValues = put_values_uint;
+      rb->PutMonoValues = put_mono_values_uint;
+      break;
+
+   case MESA_FORMAT_RGBA_FLOAT32:
+      rb->GetRow = get_row_generic;
+      rb->GetValues = get_values_generic;
+      rb->PutRow = put_row_generic;
+      rb->PutRowRGB = NULL;
+      rb->PutMonoRow = put_mono_row_generic;
+      rb->PutValues = put_values_generic;
+      rb->PutMonoValues = put_mono_values_generic;
+      break;
+
+   case MESA_FORMAT_INTENSITY_FLOAT32:
+      rb->GetRow = get_row_i_float32;
+      rb->GetValues = get_values_i_float32;
+      rb->PutRow = put_row_generic;
+      rb->PutRowRGB = NULL;
+      rb->PutMonoRow = put_mono_row_generic;
+      rb->PutValues = put_values_generic;
+      rb->PutMonoValues = put_mono_values_generic;
+      break;
+
+   case MESA_FORMAT_LUMINANCE_FLOAT32:
+      rb->GetRow = get_row_l_float32;
+      rb->GetValues = get_values_l_float32;
+      rb->PutRow = put_row_generic;
+      rb->PutRowRGB = NULL;
+      rb->PutMonoRow = put_mono_row_generic;
+      rb->PutValues = put_values_generic;
+      rb->PutMonoValues = put_mono_values_generic;
+      break;
+
+   case MESA_FORMAT_ALPHA_FLOAT32:
+      rb->GetRow = get_row_a_float32;
+      rb->GetValues = get_values_a_float32;
+      rb->PutRow = put_row_a_float32;
+      rb->PutRowRGB = NULL;
+      rb->PutMonoRow = put_mono_row_a_float32;
+      rb->PutValues = put_values_a_float32;
+      rb->PutMonoValues = put_mono_values_a_float32;
+      break;
+
+   case MESA_FORMAT_RG_FLOAT32:
+      rb->GetRow = get_row_rg_float32;
+      rb->GetValues = get_values_rg_float32;
+      rb->PutRow = put_row_generic;
+      rb->PutRowRGB = NULL;
+      rb->PutMonoRow = put_mono_row_generic;
+      rb->PutValues = put_values_generic;
+      rb->PutMonoValues = put_mono_values_generic;
+      break;
+
+   case MESA_FORMAT_R_FLOAT32:
+      rb->GetRow = get_row_r_float32;
+      rb->GetValues = get_values_r_float32;
+      rb->PutRow = put_row_generic;
+      rb->PutRowRGB = NULL;
+      rb->PutMonoRow = put_mono_row_generic;
+      rb->PutValues = put_values_generic;
+      rb->PutMonoValues = put_mono_values_generic;
+      break;
+
+   default:
+      break;
+   }
+}
+
+/**
+ * This is a software fallback for the gl_renderbuffer->AllocStorage
+ * function.
+ * Device drivers will typically override this function for the buffers
+ * which it manages (typically color buffers, Z and stencil).
+ * Other buffers (like software accumulation and aux buffers) which the driver
+ * doesn't manage can be handled with this function.
+ *
+ * This one multi-purpose function can allocate stencil, depth, accum, color
+ * or color-index buffers!
+ *
+ * This function also plugs in the appropriate GetPointer, Get/PutRow and
+ * Get/PutValues functions.
+ */
+static GLboolean
+soft_renderbuffer_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,
+                          GLenum internalFormat,
+                          GLuint width, GLuint height)
+{
+   switch (internalFormat) {
+   case GL_RGB:
+   case GL_R3_G3_B2:
+   case GL_RGB4:
+   case GL_RGB5:
+   case GL_RGB8:
+   case GL_RGB10:
+   case GL_RGB12:
+   case GL_RGB16:
+      rb->Format = MESA_FORMAT_RGB888;
+      break;
+   case GL_RGBA:
+   case GL_RGBA2:
+   case GL_RGBA4:
+   case GL_RGB5_A1:
+   case GL_RGBA8:
+#if 1
+   case GL_RGB10_A2:
+   case GL_RGBA12:
+#endif
+      if (_mesa_little_endian())
+         rb->Format = MESA_FORMAT_RGBA8888_REV;
+      else
+         rb->Format = MESA_FORMAT_RGBA8888;
+      break;
+   case GL_RGBA16:
+   case GL_RGBA16_SNORM:
+      /* for accum buffer */
+      rb->Format = MESA_FORMAT_SIGNED_RGBA_16;
+      break;
+   case GL_STENCIL_INDEX:
+   case GL_STENCIL_INDEX1_EXT:
+   case GL_STENCIL_INDEX4_EXT:
+   case GL_STENCIL_INDEX8_EXT:
+   case GL_STENCIL_INDEX16_EXT:
+      rb->Format = MESA_FORMAT_S8;
+      break;
+   case GL_DEPTH_COMPONENT:
+   case GL_DEPTH_COMPONENT16:
+      rb->Format = MESA_FORMAT_Z16;
+      break;
+   case GL_DEPTH_COMPONENT24:
+      rb->Format = MESA_FORMAT_X8_Z24;
+      break;
+   case GL_DEPTH_COMPONENT32:
+      rb->Format = MESA_FORMAT_Z32;
+      break;
+   case GL_DEPTH_STENCIL_EXT:
+   case GL_DEPTH24_STENCIL8_EXT:
+      rb->Format = MESA_FORMAT_Z24_S8;
+      break;
+   default:
+      /* unsupported format */
+      return GL_FALSE;
+   }
+
+   _swrast_set_renderbuffer_accessors(rb);
+
+   ASSERT(rb->DataType);
+   ASSERT(rb->GetPointer);
+   ASSERT(rb->GetRow);
+   ASSERT(rb->GetValues);
+   ASSERT(rb->PutRow);
+   ASSERT(rb->PutMonoRow);
+   ASSERT(rb->PutValues);
+   ASSERT(rb->PutMonoValues);
+
+   /* free old buffer storage */
+   if (rb->Data) {
+      free(rb->Data);
+      rb->Data = NULL;
+   }
+
+   rb->RowStride = width;
+
+   if (width > 0 && height > 0) {
+      /* allocate new buffer storage */
+      rb->Data = malloc(width * height * _mesa_get_format_bytes(rb->Format));
+
+      if (rb->Data == NULL) {
+         rb->Width = 0;
+         rb->Height = 0;
+	 rb->RowStride = 0;
+         _mesa_error(ctx, GL_OUT_OF_MEMORY,
+                     "software renderbuffer allocation (%d x %d x %d)",
+                     width, height, _mesa_get_format_bytes(rb->Format));
+         return GL_FALSE;
+      }
+   }
+
+   rb->Width = width;
+   rb->Height = height;
+   rb->_BaseFormat = _mesa_base_fbo_format(ctx, internalFormat);
+
+   if (rb->Name == 0 &&
+       internalFormat == GL_RGBA16_SNORM &&
+       rb->_BaseFormat == 0) {
+      /* NOTE: This is a special case just for accumulation buffers.
+       * This is a very limited use case- there's no snorm texturing or
+       * rendering going on.
+       */
+      rb->_BaseFormat = GL_RGBA;
+   }
+   else {
+      /* the internalFormat should have been error checked long ago */
+      ASSERT(rb->_BaseFormat);
+   }
+
+   return GL_TRUE;
+}
+
+
+void
+_swrast_map_soft_renderbuffer(struct gl_context *ctx,
+                              struct gl_renderbuffer *rb,
+                              GLuint x, GLuint y, GLuint w, GLuint h,
+                              GLbitfield mode,
+                              GLubyte **out_map,
+                              GLint *out_stride)
+{
+   GLubyte *map = rb->Data;
+   int cpp = _mesa_get_format_bytes(rb->Format);
+   int stride = rb->RowStride * cpp;
+
+   ASSERT(rb->Data);
+
+   map += y * stride;
+   map += x * cpp;
+
+   *out_map = map;
+   *out_stride = stride;
+}
+
+
+void
+_swrast_unmap_soft_renderbuffer(struct gl_context *ctx,
+                                struct gl_renderbuffer *rb)
+{
+}
+
+
+
+/**
+ * Allocate a software-based renderbuffer.  This is called via the
+ * ctx->Driver.NewRenderbuffer() function when the user creates a new
+ * renderbuffer.
+ * This would not be used for hardware-based renderbuffers.
+ */
+struct gl_renderbuffer *
+_swrast_new_soft_renderbuffer(struct gl_context *ctx, GLuint name)
+{
+   struct gl_renderbuffer *rb = _mesa_new_renderbuffer(ctx, name);
+   if (rb) {
+      rb->AllocStorage = soft_renderbuffer_storage;
+      /* Normally, one would setup the PutRow, GetRow, etc functions here.
+       * But we're doing that in the soft_renderbuffer_storage() function
+       * instead.
+       */
+   }
+   return rb;
+}
+
+
+/**
+ * Add software-based color renderbuffers to the given framebuffer.
+ * This is a helper routine for device drivers when creating a
+ * window system framebuffer (not a user-created render/framebuffer).
+ * Once this function is called, you can basically forget about this
+ * renderbuffer; core Mesa will handle all the buffer management and
+ * rendering!
+ */
+static GLboolean
+add_color_renderbuffers(struct gl_context *ctx, struct gl_framebuffer *fb,
+                        GLuint rgbBits, GLuint alphaBits,
+                        GLboolean frontLeft, GLboolean backLeft,
+                        GLboolean frontRight, GLboolean backRight)
+{
+   gl_buffer_index b;
+
+   if (rgbBits > 16 || alphaBits > 16) {
+      _mesa_problem(ctx,
+                    "Unsupported bit depth in add_color_renderbuffers");
+      return GL_FALSE;
+   }
+
+   assert(MAX_COLOR_ATTACHMENTS >= 4);
+
+   for (b = BUFFER_FRONT_LEFT; b <= BUFFER_BACK_RIGHT; b++) {
+      struct gl_renderbuffer *rb;
+
+      if (b == BUFFER_FRONT_LEFT && !frontLeft)
+         continue;
+      else if (b == BUFFER_BACK_LEFT && !backLeft)
+         continue;
+      else if (b == BUFFER_FRONT_RIGHT && !frontRight)
+         continue;
+      else if (b == BUFFER_BACK_RIGHT && !backRight)
+         continue;
+
+      assert(fb->Attachment[b].Renderbuffer == NULL);
+
+      rb = _mesa_new_renderbuffer(ctx, 0);
+      if (!rb) {
+         _mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating color buffer");
+         return GL_FALSE;
+      }
+
+      rb->InternalFormat = GL_RGBA;
+
+      rb->AllocStorage = soft_renderbuffer_storage;
+      _mesa_add_renderbuffer(fb, b, rb);
+   }
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Add a software-based depth renderbuffer to the given framebuffer.
+ * This is a helper routine for device drivers when creating a
+ * window system framebuffer (not a user-created render/framebuffer).
+ * Once this function is called, you can basically forget about this
+ * renderbuffer; core Mesa will handle all the buffer management and
+ * rendering!
+ */
+static GLboolean
+add_depth_renderbuffer(struct gl_context *ctx, struct gl_framebuffer *fb,
+                       GLuint depthBits)
+{
+   struct gl_renderbuffer *rb;
+
+   if (depthBits > 32) {
+      _mesa_problem(ctx,
+                    "Unsupported depthBits in add_depth_renderbuffer");
+      return GL_FALSE;
+   }
+
+   assert(fb->Attachment[BUFFER_DEPTH].Renderbuffer == NULL);
+
+   rb = _mesa_new_renderbuffer(ctx, 0);
+   if (!rb) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating depth buffer");
+      return GL_FALSE;
+   }
+
+   if (depthBits <= 16) {
+      rb->InternalFormat = GL_DEPTH_COMPONENT16;
+   }
+   else if (depthBits <= 24) {
+      rb->InternalFormat = GL_DEPTH_COMPONENT24;
+   }
+   else {
+      rb->InternalFormat = GL_DEPTH_COMPONENT32;
+   }
+
+   rb->AllocStorage = soft_renderbuffer_storage;
+   _mesa_add_renderbuffer(fb, BUFFER_DEPTH, rb);
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Add a software-based stencil renderbuffer to the given framebuffer.
+ * This is a helper routine for device drivers when creating a
+ * window system framebuffer (not a user-created render/framebuffer).
+ * Once this function is called, you can basically forget about this
+ * renderbuffer; core Mesa will handle all the buffer management and
+ * rendering!
+ */
+static GLboolean
+add_stencil_renderbuffer(struct gl_context *ctx, struct gl_framebuffer *fb,
+                         GLuint stencilBits)
+{
+   struct gl_renderbuffer *rb;
+
+   if (stencilBits > 16) {
+      _mesa_problem(ctx,
+                  "Unsupported stencilBits in add_stencil_renderbuffer");
+      return GL_FALSE;
+   }
+
+   assert(fb->Attachment[BUFFER_STENCIL].Renderbuffer == NULL);
+
+   rb = _mesa_new_renderbuffer(ctx, 0);
+   if (!rb) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating stencil buffer");
+      return GL_FALSE;
+   }
+
+   assert(stencilBits <= 8);
+   rb->InternalFormat = GL_STENCIL_INDEX8;
+
+   rb->AllocStorage = soft_renderbuffer_storage;
+   _mesa_add_renderbuffer(fb, BUFFER_STENCIL, rb);
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Add a software-based accumulation renderbuffer to the given framebuffer.
+ * This is a helper routine for device drivers when creating a
+ * window system framebuffer (not a user-created render/framebuffer).
+ * Once this function is called, you can basically forget about this
+ * renderbuffer; core Mesa will handle all the buffer management and
+ * rendering!
+ */
+static GLboolean
+add_accum_renderbuffer(struct gl_context *ctx, struct gl_framebuffer *fb,
+                       GLuint redBits, GLuint greenBits,
+                       GLuint blueBits, GLuint alphaBits)
+{
+   struct gl_renderbuffer *rb;
+
+   if (redBits > 16 || greenBits > 16 || blueBits > 16 || alphaBits > 16) {
+      _mesa_problem(ctx,
+                    "Unsupported accumBits in add_accum_renderbuffer");
+      return GL_FALSE;
+   }
+
+   assert(fb->Attachment[BUFFER_ACCUM].Renderbuffer == NULL);
+
+   rb = _mesa_new_renderbuffer(ctx, 0);
+   if (!rb) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating accum buffer");
+      return GL_FALSE;
+   }
+
+   rb->InternalFormat = GL_RGBA16_SNORM;
+   rb->AllocStorage = soft_renderbuffer_storage;
+   _mesa_add_renderbuffer(fb, BUFFER_ACCUM, rb);
+
+   return GL_TRUE;
+}
+
+
+
+/**
+ * Add a software-based aux renderbuffer to the given framebuffer.
+ * This is a helper routine for device drivers when creating a
+ * window system framebuffer (not a user-created render/framebuffer).
+ * Once this function is called, you can basically forget about this
+ * renderbuffer; core Mesa will handle all the buffer management and
+ * rendering!
+ *
+ * NOTE: color-index aux buffers not supported.
+ */
+static GLboolean
+add_aux_renderbuffers(struct gl_context *ctx, struct gl_framebuffer *fb,
+                      GLuint colorBits, GLuint numBuffers)
+{
+   GLuint i;
+
+   if (colorBits > 16) {
+      _mesa_problem(ctx,
+                    "Unsupported colorBits in add_aux_renderbuffers");
+      return GL_FALSE;
+   }
+
+   assert(numBuffers <= MAX_AUX_BUFFERS);
+
+   for (i = 0; i < numBuffers; i++) {
+      struct gl_renderbuffer *rb = _mesa_new_renderbuffer(ctx, 0);
+
+      assert(fb->Attachment[BUFFER_AUX0 + i].Renderbuffer == NULL);
+
+      if (!rb) {
+         _mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating aux buffer");
+         return GL_FALSE;
+      }
+
+      assert (colorBits <= 8);
+      rb->InternalFormat = GL_RGBA;
+
+      rb->AllocStorage = soft_renderbuffer_storage;
+      _mesa_add_renderbuffer(fb, BUFFER_AUX0 + i, rb);
+   }
+   return GL_TRUE;
+}
+
+
+/**
+ * Create/attach software-based renderbuffers to the given framebuffer.
+ * This is a helper routine for device drivers.  Drivers can just as well
+ * call the individual _mesa_add_*_renderbuffer() routines directly.
+ */
+void
+_swrast_add_soft_renderbuffers(struct gl_framebuffer *fb,
+                               GLboolean color,
+                               GLboolean depth,
+                               GLboolean stencil,
+                               GLboolean accum,
+                               GLboolean alpha,
+                               GLboolean aux)
+{
+   GLboolean frontLeft = GL_TRUE;
+   GLboolean backLeft = fb->Visual.doubleBufferMode;
+   GLboolean frontRight = fb->Visual.stereoMode;
+   GLboolean backRight = fb->Visual.stereoMode && fb->Visual.doubleBufferMode;
+
+   if (color) {
+      assert(fb->Visual.redBits == fb->Visual.greenBits);
+      assert(fb->Visual.redBits == fb->Visual.blueBits);
+      add_color_renderbuffers(NULL, fb,
+                              fb->Visual.redBits,
+                              fb->Visual.alphaBits,
+                              frontLeft, backLeft,
+                              frontRight, backRight);
+   }
+
+   if (depth) {
+      assert(fb->Visual.depthBits > 0);
+      add_depth_renderbuffer(NULL, fb, fb->Visual.depthBits);
+   }
+
+   if (stencil) {
+      assert(fb->Visual.stencilBits > 0);
+      add_stencil_renderbuffer(NULL, fb, fb->Visual.stencilBits);
+   }
+
+   if (accum) {
+      assert(fb->Visual.accumRedBits > 0);
+      assert(fb->Visual.accumGreenBits > 0);
+      assert(fb->Visual.accumBlueBits > 0);
+      add_accum_renderbuffer(NULL, fb,
+                             fb->Visual.accumRedBits,
+                             fb->Visual.accumGreenBits,
+                             fb->Visual.accumBlueBits,
+                             fb->Visual.accumAlphaBits);
+   }
+
+   if (aux) {
+      assert(fb->Visual.numAuxBuffers > 0);
+      add_aux_renderbuffers(NULL, fb, fb->Visual.redBits,
+                            fb->Visual.numAuxBuffers);
+   }
+
+#if 0
+   if (multisample) {
+      /* maybe someday */
+   }
+#endif
+}
diff --git a/mesalib/src/mesa/swrast/s_accum.h b/mesalib/src/mesa/swrast/s_renderbuffer.h
index bdd6ac326..266ebd934 100644
--- a/mesalib/src/mesa/swrast/s_accum.h
+++ b/mesalib/src/mesa/swrast/s_renderbuffer.h
@@ -1,38 +1,66 @@
-/*

- * Mesa 3-D graphics library

- * Version:  6.3

- *

- * Copyright (C) 1999-2005  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 S_ACCUM_H

-#define S_ACCUM_H

-

-

-struct gl_context;

-struct gl_renderbuffer;

-

-

-extern void

-_swrast_clear_accum_buffer(struct gl_context *ctx, struct gl_renderbuffer *rb);

-

-

-#endif

+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 1999-2005  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 S_RENDERBUFFER_H
+#define S_RENDERBUFFER_H
+
+#include "main/glheader.h"
+
+
+struct gl_context;
+struct gl_framebuffer;
+struct gl_renderbuffer;
+
+
+extern struct gl_renderbuffer *
+_swrast_new_soft_renderbuffer(struct gl_context *ctx, GLuint name);
+
+extern void
+_swrast_map_soft_renderbuffer(struct gl_context *ctx,
+                              struct gl_renderbuffer *rb,
+                              GLuint x, GLuint y, GLuint w, GLuint h,
+                              GLbitfield mode,
+                              GLubyte **out_map,
+                              GLint *out_stride);
+
+extern void
+_swrast_unmap_soft_renderbuffer(struct gl_context *ctx,
+                                struct gl_renderbuffer *rb);
+
+extern void
+_swrast_set_renderbuffer_accessors(struct gl_renderbuffer *rb);
+
+
+extern void
+_swrast_add_soft_renderbuffers(struct gl_framebuffer *fb,
+                               GLboolean color,
+                               GLboolean depth,
+                               GLboolean stencil,
+                               GLboolean accum,
+                               GLboolean alpha,
+                               GLboolean aux);
+
+
+#endif /* S_RENDERBUFFER_H */
diff --git a/mesalib/src/mesa/swrast/s_texfetch_tmp.h b/mesalib/src/mesa/swrast/s_texfetch_tmp.h
index e9512b561..877c29c9b 100644
--- a/mesalib/src/mesa/swrast/s_texfetch_tmp.h
+++ b/mesalib/src/mesa/swrast/s_texfetch_tmp.h
@@ -2270,7 +2270,7 @@ static void FETCH(f_z24_s8)( const struct swrast_texture_image *texImage,
 {
    /* only return Z, not stencil data */
    const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
-   const GLfloat scale = 1.0F / (GLfloat) 0xffffff;
+   const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
    texel[0] = ((*src) >> 8) * scale;
    ASSERT(texImage->Base.TexFormat == MESA_FORMAT_Z24_S8 ||
 	  texImage->Base.TexFormat == MESA_FORMAT_Z24_X8);
@@ -2298,7 +2298,7 @@ static void FETCH(f_s8_z24)( const struct swrast_texture_image *texImage,
 {
    /* only return Z, not stencil data */
    const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
-   const GLfloat scale = 1.0F / (GLfloat) 0xffffff;
+   const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
    texel[0] = ((*src) & 0x00ffffff) * scale;
    ASSERT(texImage->Base.TexFormat == MESA_FORMAT_S8_Z24 ||
 	  texImage->Base.TexFormat == MESA_FORMAT_X8_Z24);
diff --git a/mesalib/src/mesa/swrast/s_zoom.c b/mesalib/src/mesa/swrast/s_zoom.c
index 16bb997f3..f407fdcf4 100644
--- a/mesalib/src/mesa/swrast/s_zoom.c
+++ b/mesalib/src/mesa/swrast/s_zoom.c
@@ -299,11 +299,17 @@ zoom_span( struct gl_context *ctx, GLint imgX, GLint imgY, const SWspan *span,
        * Also, clipping may change the span end value, so store it as well.
        */
       const GLint end = zoomed.end; /* save */
-      GLuint rgbaSave[MAX_WIDTH][4];
+      void *rgbaSave;
       const GLint pixelSize =
          (zoomed.array->ChanType == GL_UNSIGNED_BYTE) ? 4 * sizeof(GLubyte) :
          ((zoomed.array->ChanType == GL_UNSIGNED_SHORT) ? 4 * sizeof(GLushort)
           : 4 * sizeof(GLfloat));
+
+      rgbaSave = malloc(zoomed.end * pixelSize);
+      if (!rgbaSave) {
+         return;
+      }
+
       if (y1 - y0 > 1) {
          memcpy(rgbaSave, zoomed.array->rgba, zoomed.end * pixelSize);
       }
@@ -315,6 +321,8 @@ zoom_span( struct gl_context *ctx, GLint imgX, GLint imgY, const SWspan *span,
             memcpy(zoomed.array->rgba, rgbaSave, zoomed.end * pixelSize);
          }
       }
+
+      free(rgbaSave);
    }
 }
 
diff --git a/mesalib/src/mesa/swrast/swrast.h b/mesalib/src/mesa/swrast/swrast.h
index 17b66c664..dd4055159 100644
--- a/mesalib/src/mesa/swrast/swrast.h
+++ b/mesalib/src/mesa/swrast/swrast.h
@@ -127,9 +127,6 @@ _swrast_BlitFramebuffer(struct gl_context *ctx,
 extern void
 _swrast_Clear(struct gl_context *ctx, GLbitfield buffers);
 
-extern void
-_swrast_Accum(struct gl_context *ctx, GLenum op, GLfloat value);
-
 
 
 /* Reset the stipple counter