mesa: Autogenerate most of format_pack.c

We were auto-generating it before.  The problem was that the autogeneration
tool we were using was called "copy, paste, and edit".  Let's use a more
sensible solution.

Signed-off-by: Jason Ekstrand <[email protected]>

v2 by Samuel Iglesias <[email protected]>
- Remove format_pack.c as it is now autogenerated
- Add usage of INDENT_FLAGS in Makefile.am
- Remove trailing blank line

v3 by Samuel Iglesias <[email protected]>
- Merge format_convert.py into format_parser.py
   - Adapt pack_*_* function generations
- Fix out-of-tree build

v4 by Samuel Iglesias <[email protected]>
- _get_datatype() is now a helper function

v5 by Samuel Iglesias <[email protected]>
- format_pack.c.mako is now format_pack.py, with the template code
  inlined. It now auto-generates format_pack.c
- Simplify Makefile.am change.
- Modify SConscript to build format_pack.c with scons.
- Remove run_mako.py
- Add format_pack.c to gitignore

v6 by Samuel Iglesias <[email protected]>:
- Don't allow float to non-normalized integer format conversions.
- Add non-normalized formats support for ubyte packing functions. Merge
the previously separated patch.
- Add clamping for non-normalized integer formats in pack_ubyte*()

v7 by Samuel Iglesias <[email protected]>:
- Add assert to check that sRGB formats are 8-bit size.

Signed-off-by: Samuel Iglesias Gonsalvez <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>

7 files changed, 985 insertions, 2983 deletions

diff --git a/src/mesa/Makefile.am b/src/mesa/Makefile.am
index 8d8082ae36a..6b00310032f 100644
--- a/src/mesa/Makefile.am
+++ b/src/mesa/Makefile.am
@@ -83,6 +83,7 @@ BUILT_SOURCES = \
 	main/get_hash.h \
         main/format_info.c \
 	$(BUILDDIR)main/git_sha1.h \
+	main/format_pack.c \
 	$(BUILDDIR)program/program_parse.tab.c \
 	$(BUILDDIR)program/lex.yy.c
 CLEANFILES = \
@@ -106,6 +107,14 @@ main/format_info.c: main/formats.csv                                    \
                    $< > [email protected];                                         \
 	mv [email protected] $@;
 
+main/format_pack.c: main/format_pack.py main/formats.csv		\
+                    main/format_parser.py
+	$(AM_V_GEN)set -e;						\
+	$(PYTHON2) $(PYTHON_FLAGS)					\
+			$(srcdir)/main/format_pack.py			\
+			$(srcdir)/main/formats.csv			\
+		| $(INDENT) $(INDENT_FLAGS) > $@;
+
 main/formats.c: main/format_info.c
 
 noinst_LTLIBRARIES = $(ARCH_LIBS)
diff --git a/src/mesa/Makefile.sources b/src/mesa/Makefile.sources
index 7ac3bbc714b..e4d3ba18018 100644
--- a/src/mesa/Makefile.sources
+++ b/src/mesa/Makefile.sources
@@ -93,8 +93,8 @@ MAIN_FILES = \
 	$(SRCDIR)main/ffvertex_prog.h \
 	$(SRCDIR)main/fog.c \
 	$(SRCDIR)main/fog.h \
-	$(SRCDIR)main/format_pack.c \
 	$(SRCDIR)main/format_pack.h \
+	$(BUILDDIR)main/format_pack.c \
 	$(SRCDIR)main/formatquery.c \
 	$(SRCDIR)main/formatquery.h \
 	$(SRCDIR)main/formats.c \
diff --git a/src/mesa/SConscript b/src/mesa/SConscript
index e7c4f5ca1f8..d9a34784048 100644
--- a/src/mesa/SConscript
+++ b/src/mesa/SConscript
@@ -66,6 +66,13 @@ format_info = env.CodeGenerate(
       command = python_cmd + ' $SCRIPT ' + ' $SOURCE > $TARGET'
 )
 
+format_pack = env.CodeGenerate(
+      target = 'main/format_pack.c',
+      script = 'main/format_pack.py',
+      source = 'main/formats.csv',
+      command = python_cmd + ' $SCRIPT ' + ' $SOURCE > $TARGET'
+)
+
 #
 # Assembly sources
 #
diff --git a/src/mesa/main/.gitignore b/src/mesa/main/.gitignore
index fec06291a70..964a86760d9 100644
--- a/src/mesa/main/.gitignore
+++ b/src/mesa/main/.gitignore
@@ -9,3 +9,4 @@ remap_helper.h
 get_hash.h
 get_hash.h.tmp
 format_info.c
+format_pack.c
diff --git a/src/mesa/main/format_pack.c b/src/mesa/main/format_pack.c
deleted file mode 100644
index 3d191c186f2..00000000000
--- a/src/mesa/main/format_pack.c
+++ /dev/null
@@ -1,2982 +0,0 @@
-/*
- * Mesa 3-D graphics library
- *
- * Copyright (c) 2011 VMware, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS 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.
- */
-
-
-/**
- * Color, depth, stencil packing functions.
- * Used to pack basic color, depth and stencil formats to specific
- * hardware formats.
- *
- * There are both per-pixel and per-row packing functions:
- * - The former will be used by swrast to write values to the color, depth,
- *   stencil buffers when drawing points, lines and masked spans.
- * - The later will be used for image-oriented functions like glDrawPixels,
- *   glAccum, and glTexImage.
- */
-
-
-#include "colormac.h"
-#include "format_pack.h"
-#include "macros.h"
-#include "../../gallium/auxiliary/util/u_format_rgb9e5.h"
-#include "../../gallium/auxiliary/util/u_format_r11g11b10f.h"
-#include "util/format_srgb.h"
-
-
-/** Helper struct for MESA_FORMAT_Z32_FLOAT_S8X24_UINT */
-struct z32f_x24s8
-{
-   float z;
-   uint32_t x24s8;
-};
-
-
-typedef void (*pack_ubyte_rgba_row_func)(GLuint n,
-                                         const GLubyte src[][4], void *dst);
-
-typedef void (*pack_float_rgba_row_func)(GLuint n,
-                                         const GLfloat src[][4], void *dst);
-
-
-/*
- * MESA_FORMAT_A8B8G8R8_UNORM
- */
-
-static void
-pack_ubyte_A8B8G8R8_UNORM(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   *d = PACK_COLOR_8888(src[RCOMP], src[GCOMP], src[BCOMP], src[ACOMP]);
-}
-
-static void
-pack_float_A8B8G8R8_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   _mesa_unclamped_float_rgba_to_ubyte(v, src);
-   pack_ubyte_A8B8G8R8_UNORM(v, dst);
-}
-
-static void
-pack_row_ubyte_A8B8G8R8_UNORM(GLuint n, const GLubyte src[][4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      d[i] = PACK_COLOR_8888(src[i][RCOMP], src[i][GCOMP],
-                             src[i][BCOMP], src[i][ACOMP]);
-   }
-}
-
-static void
-pack_row_float_A8B8G8R8_UNORM(GLuint n, const GLfloat src[][4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      GLubyte v[4];
-      _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
-      pack_ubyte_A8B8G8R8_UNORM(v, d + i);
-   }
-}
-
-
-
-/*
- * MESA_FORMAT_R8G8B8A8_UNORM
- */
-
-static void
-pack_ubyte_R8G8B8A8_UNORM(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   *d = PACK_COLOR_8888(src[ACOMP], src[BCOMP], src[GCOMP], src[RCOMP]);
-}
-
-static void
-pack_float_R8G8B8A8_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   _mesa_unclamped_float_rgba_to_ubyte(v, src);
-   pack_ubyte_R8G8B8A8_UNORM(v, dst);
-}
-
-static void
-pack_row_ubyte_R8G8B8A8_UNORM(GLuint n, const GLubyte src[][4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      d[i] = PACK_COLOR_8888(src[i][ACOMP], src[i][BCOMP],
-                             src[i][GCOMP], src[i][RCOMP]);
-   }
-}
-
-static void
-pack_row_float_R8G8B8A8_UNORM(GLuint n, const GLfloat src[][4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      GLubyte v[4];
-      _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
-      pack_ubyte_R8G8B8A8_UNORM(v, d + i);
-   }
-}
-
-
-/*
- * MESA_FORMAT_B8G8R8A8_UNORM
- */
-
-static void
-pack_ubyte_B8G8R8A8_UNORM(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   *d = PACK_COLOR_8888(src[ACOMP], src[RCOMP], src[GCOMP], src[BCOMP]);
-}
-
-static void
-pack_float_B8G8R8A8_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   _mesa_unclamped_float_rgba_to_ubyte(v, src);
-   pack_ubyte_B8G8R8A8_UNORM(v, dst);
-}
-
-static void
-pack_row_ubyte_B8G8R8A8_UNORM(GLuint n, const GLubyte src[][4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      d[i] = PACK_COLOR_8888(src[i][ACOMP], src[i][RCOMP],
-                             src[i][GCOMP], src[i][BCOMP]);
-   }
-}
-
-static void
-pack_row_float_B8G8R8A8_UNORM(GLuint n, const GLfloat src[][4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      GLubyte v[4];
-      _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
-      pack_ubyte_B8G8R8A8_UNORM(v, d + i);
-   }
-}
-
-
-/*
- * MESA_FORMAT_A8R8G8B8_UNORM
- */
-
-static void
-pack_ubyte_A8R8G8B8_UNORM(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   *d = PACK_COLOR_8888(src[BCOMP], src[GCOMP], src[RCOMP], src[ACOMP]);
-}
-
-static void
-pack_float_A8R8G8B8_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   _mesa_unclamped_float_rgba_to_ubyte(v, src);
-   pack_ubyte_A8R8G8B8_UNORM(v, dst);
-}
-
-static void
-pack_row_ubyte_A8R8G8B8_UNORM(GLuint n, const GLubyte src[][4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      d[i] = PACK_COLOR_8888(src[i][BCOMP], src[i][GCOMP],
-                             src[i][RCOMP], src[i][ACOMP]);
-   }
-}
-
-static void
-pack_row_float_A8R8G8B8_UNORM(GLuint n, const GLfloat src[][4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      GLubyte v[4];
-      _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
-      pack_ubyte_A8R8G8B8_UNORM(v, d + i);
-   }
-}
-
-
-/*
- * MESA_FORMAT_B8G8R8X8_UNORM
- */
-
-static void
-pack_ubyte_B8G8R8X8_UNORM(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   *d = PACK_COLOR_8888(0x0, src[RCOMP], src[GCOMP], src[BCOMP]);
-}
-
-static void
-pack_float_B8G8R8X8_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   _mesa_unclamped_float_rgba_to_ubyte(v, src);
-   pack_ubyte_B8G8R8X8_UNORM(v, dst);
-}
-
-static void
-pack_row_ubyte_B8G8R8X8_UNORM(GLuint n, const GLubyte src[][4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      d[i] = PACK_COLOR_8888(0, src[i][RCOMP], src[i][GCOMP], src[i][BCOMP]);
-   }
-}
-
-static void
-pack_row_float_B8G8R8X8_UNORM(GLuint n, const GLfloat src[][4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      GLubyte v[4];
-      _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
-      pack_ubyte_B8G8R8X8_UNORM(v, d + i);
-   }
-}
-
-
-/*
- * MESA_FORMAT_X8R8G8B8_UNORM
- */
-
-static void
-pack_ubyte_X8R8G8B8_UNORM(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   *d = PACK_COLOR_8888(src[BCOMP], src[GCOMP], src[RCOMP], 0);
-}
-
-static void
-pack_float_X8R8G8B8_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   _mesa_unclamped_float_rgba_to_ubyte(v, src);
-   pack_ubyte_X8R8G8B8_UNORM(v, dst);
-}
-
-static void
-pack_row_ubyte_X8R8G8B8_UNORM(GLuint n, const GLubyte src[][4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      d[i] = PACK_COLOR_8888(src[i][BCOMP], src[i][GCOMP], src[i][RCOMP], 0);
-   }
-}
-
-static void
-pack_row_float_X8R8G8B8_UNORM(GLuint n, const GLfloat src[][4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      GLubyte v[4];
-      _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
-      pack_ubyte_X8R8G8B8_UNORM(v, d + i);
-   }
-}
-
-
-/*
- * MESA_FORMAT_BGR_UNORM8
- */
-
-static void
-pack_ubyte_BGR_UNORM8(const GLubyte src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   d[2] = src[RCOMP];
-   d[1] = src[GCOMP];
-   d[0] = src[BCOMP];
-}
-
-static void
-pack_float_BGR_UNORM8(const GLfloat src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   UNCLAMPED_FLOAT_TO_UBYTE(d[2], src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(d[1], src[GCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(d[0], src[BCOMP]);
-}
-
-static void
-pack_row_ubyte_BGR_UNORM8(GLuint n, const GLubyte src[][4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      d[i*3+2] = src[i][RCOMP];
-      d[i*3+1] = src[i][GCOMP];
-      d[i*3+0] = src[i][BCOMP];
-   }
-}
-
-static void
-pack_row_float_BGR_UNORM8(GLuint n, const GLfloat src[][4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      GLubyte v[4];
-      _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
-      d[i*3+2] = v[RCOMP];
-      d[i*3+1] = v[GCOMP];
-      d[i*3+0] = v[BCOMP];
-   }
-}
-
-
-/*
- * MESA_FORMAT_RGB_UNORM8
- */
-
-static void
-pack_ubyte_RGB_UNORM8(const GLubyte src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   d[2] = src[BCOMP];
-   d[1] = src[GCOMP];
-   d[0] = src[RCOMP];
-}
-
-static void
-pack_float_RGB_UNORM8(const GLfloat src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   UNCLAMPED_FLOAT_TO_UBYTE(d[2], src[BCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(d[1], src[GCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(d[0], src[RCOMP]);
-}
-
-static void
-pack_row_ubyte_RGB_UNORM8(GLuint n, const GLubyte src[][4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      d[i*3+2] = src[i][BCOMP];
-      d[i*3+1] = src[i][GCOMP];
-      d[i*3+0] = src[i][RCOMP];
-   }
-}
-
-static void
-pack_row_float_RGB_UNORM8(GLuint n, const GLfloat src[][4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      GLubyte v[4];
-      _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
-      d[i*3+2] = v[BCOMP];
-      d[i*3+1] = v[GCOMP];
-      d[i*3+0] = v[RCOMP];
-   }
-}
-
-
-/*
- * MESA_FORMAT_B5G6R5_UNORM
- */
-
-static void
-pack_ubyte_B5G6R5_UNORM(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   *d = PACK_COLOR_565(src[RCOMP], src[GCOMP], src[BCOMP]);
-}
-
-static void
-pack_float_B5G6R5_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[3];
-   UNCLAMPED_FLOAT_TO_UBYTE(v[0], src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(v[1], src[GCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(v[2], src[BCOMP]);
-   pack_ubyte_B5G6R5_UNORM(v, dst);
-}
-
-static void
-pack_row_ubyte_B5G6R5_UNORM(GLuint n, const GLubyte src[][4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      pack_ubyte_B5G6R5_UNORM(src[i], d + i);
-   }
-}
-
-static void
-pack_row_float_B5G6R5_UNORM(GLuint n, const GLfloat src[][4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      GLubyte v[4];
-      _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
-      pack_ubyte_B5G6R5_UNORM(v, d + i);
-   }
-}
-
-
-static void
-pack_ubyte_R5G6B5_UNORM(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   *d = PACK_COLOR_565(src[BCOMP], src[GCOMP], src[RCOMP]);
-}
-
-static void
-pack_float_R5G6B5_UNORM(const GLfloat src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   GLubyte r, g, b;
-   UNCLAMPED_FLOAT_TO_UBYTE(r, src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(g, src[GCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(b, src[BCOMP]);
-   *d = PACK_COLOR_565(b, g, r);
-}
-
-static void
-pack_row_ubyte_R5G6B5_UNORM(GLuint n, const GLubyte src[][4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      pack_ubyte_R5G6B5_UNORM(src[i], d + i);
-   }
-}
-
-static void
-pack_row_float_R5G6B5_UNORM(GLuint n, const GLfloat src[][4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   GLuint i;
-   for (i = 0; i < n; i++) {
-      GLubyte v[4];
-      _mesa_unclamped_float_rgba_to_ubyte(v, src[i]);
-      pack_ubyte_R5G6B5_UNORM(v, d + i);
-   }
-}
-
-
-/*
- * MESA_FORMAT_B4G4R4A4_UNORM
- */
-
-static void
-pack_ubyte_B4G4R4A4_UNORM(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   *d = PACK_COLOR_4444(src[ACOMP], src[RCOMP], src[GCOMP], src[BCOMP]);
-}
-
-static void
-pack_float_B4G4R4A4_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   _mesa_unclamped_float_rgba_to_ubyte(v, src);
-   pack_ubyte_B4G4R4A4_UNORM(v, dst);
-}
-
-/* use fallback row packing functions */
-
-
-/*
- * MESA_FORMAT_A4R4G4B4_UNORM
- */
-
-static void
-pack_ubyte_A4R4G4B4_UNORM(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   *d = PACK_COLOR_4444(src[BCOMP], src[GCOMP], src[RCOMP], src[ACOMP]);
-}
-
-static void
-pack_float_A4R4G4B4_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   _mesa_unclamped_float_rgba_to_ubyte(v, src);
-   pack_ubyte_A4R4G4B4_UNORM(v, dst);
-}
-
-/* use fallback row packing functions */
-
-
-/*
- * MESA_FORMAT_A1B5G5R5_UNORM
- */
-
-static void
-pack_ubyte_A1B5G5R5_UNORM(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   *d = PACK_COLOR_5551(src[RCOMP], src[GCOMP], src[BCOMP], src[ACOMP]);
-}
-
-static void
-pack_float_A1B5G5R5_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   _mesa_unclamped_float_rgba_to_ubyte(v, src);
-   pack_ubyte_A1B5G5R5_UNORM(v, dst);
-}
-
-/* use fallback row packing functions */
-
-
-/*
- * MESA_FORMAT_B5G5R5A1_UNORM
- */
-
-static void
-pack_ubyte_B5G5R5A1_UNORM(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   *d = PACK_COLOR_1555(src[ACOMP], src[RCOMP], src[GCOMP], src[BCOMP]);
-}
-
-static void
-pack_float_B5G5R5A1_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   _mesa_unclamped_float_rgba_to_ubyte(v, src);
-   pack_ubyte_B5G5R5A1_UNORM(v, dst);
-}
-
-static void
-pack_ubyte_A1R5G5B5_UNORM(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst), tmp;
-   tmp = PACK_COLOR_5551(src[BCOMP], src[GCOMP], src[RCOMP], src[ACOMP]);
-   *d = (tmp >> 8) | (tmp << 8);
-}
-
-static void
-pack_float_A1R5G5B5_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   _mesa_unclamped_float_rgba_to_ubyte(v, src);
-   pack_ubyte_A1R5G5B5_UNORM(v, dst);
-}
-
-
-/* MESA_FORMAT_L4A4_UNORM */
-
-static void
-pack_ubyte_L4A4_UNORM(const GLubyte src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   *d = PACK_COLOR_44(src[ACOMP], src[RCOMP]);
-}
-
-static void
-pack_float_L4A4_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   UNCLAMPED_FLOAT_TO_UBYTE(v[0], src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(v[3], src[ACOMP]);
-   pack_ubyte_L4A4_UNORM(v, dst);
-}
-
-
-/* MESA_FORMAT_L8A8_UNORM */
-
-static void
-pack_ubyte_L8A8_UNORM(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   *d = PACK_COLOR_88(src[ACOMP], src[RCOMP]);
-}
-
-static void
-pack_float_L8A8_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   UNCLAMPED_FLOAT_TO_UBYTE(v[0], src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(v[3], src[ACOMP]);
-   pack_ubyte_L8A8_UNORM(v, dst);
-}
-
-
-/* MESA_FORMAT_A8L8_UNORM */
-
-static void
-pack_ubyte_A8L8_UNORM(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   *d = PACK_COLOR_88(src[RCOMP], src[ACOMP]);
-}
-
-static void
-pack_float_A8L8_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   UNCLAMPED_FLOAT_TO_UBYTE(v[0], src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(v[3], src[ACOMP]);
-   pack_ubyte_A8L8_UNORM(v, dst);
-}
-
-
-/* MESA_FORMAT_L16A16_UNORM */
-
-static void
-pack_ubyte_L16A16_UNORM(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort l = UBYTE_TO_USHORT(src[RCOMP]);
-   GLushort a = UBYTE_TO_USHORT(src[ACOMP]);
-   *d = PACK_COLOR_1616(a, l);
-}
-
-static void
-pack_float_L16A16_UNORM(const GLfloat src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort l, a;
-   UNCLAMPED_FLOAT_TO_USHORT(l, src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(a, src[ACOMP]);
-   *d = PACK_COLOR_1616(a, l);
-}
-
-
-/* MESA_FORMAT_A16L16_UNORM */
-
-static void
-pack_ubyte_A16L16_UNORM(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort l = UBYTE_TO_USHORT(src[RCOMP]);
-   GLushort a = UBYTE_TO_USHORT(src[ACOMP]);
-   *d = PACK_COLOR_1616(l, a);
-}
-
-static void
-pack_float_A16L16_UNORM(const GLfloat src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort l, a;
-   UNCLAMPED_FLOAT_TO_USHORT(l, src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(a, src[ACOMP]);
-   *d = PACK_COLOR_1616(l, a);
-}
-
-
-/* MESA_FORMAT_B2G3R3_UNORM */
-
-static void
-pack_ubyte_B2G3R3_UNORM(const GLubyte src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   *d = PACK_COLOR_332(src[RCOMP], src[GCOMP], src[BCOMP]);
-}
-
-static void
-pack_float_B2G3R3_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   UNCLAMPED_FLOAT_TO_UBYTE(v[0], src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(v[1], src[GCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(v[2], src[BCOMP]);
-   pack_ubyte_B2G3R3_UNORM(v, dst);
-}
-
-
-/* MESA_FORMAT_A_UNORM8 */
-
-static void
-pack_ubyte_A_UNORM8(const GLubyte src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   *d = src[ACOMP];
-}
-
-static void
-pack_float_A_UNORM8(const GLfloat src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   UNCLAMPED_FLOAT_TO_UBYTE(d[0], src[ACOMP]);
-}
-
-
-/* MESA_FORMAT_A_UNORM16 */
-
-static void
-pack_ubyte_A_UNORM16(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   *d = UBYTE_TO_USHORT(src[ACOMP]);
-}
-
-static void
-pack_float_A_UNORM16(const GLfloat src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   UNCLAMPED_FLOAT_TO_USHORT(d[0], src[ACOMP]);
-}
-
-
-/* MESA_FORMAT_L_UNORM8 */
-
-static void
-pack_ubyte_L_UNORM8(const GLubyte src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   *d = src[RCOMP];
-}
-
-static void
-pack_float_L_UNORM8(const GLfloat src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   UNCLAMPED_FLOAT_TO_UBYTE(d[0], src[RCOMP]);
-}
-
-
-/* MESA_FORMAT_L_UNORM16 */
-
-static void
-pack_ubyte_L_UNORM16(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   *d = UBYTE_TO_USHORT(src[RCOMP]);
-}
-
-static void
-pack_float_L_UNORM16(const GLfloat src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   UNCLAMPED_FLOAT_TO_USHORT(d[0], src[RCOMP]);
-}
-
-
-/* MESA_FORMAT_YCBCR */
-
-static void
-pack_ubyte_YCBCR(const GLubyte src[4], void *dst)
-{
-   /* todo */
-}
-
-static void
-pack_float_YCBCR(const GLfloat src[4], void *dst)
-{
-   /* todo */
-}
-
-
-/* MESA_FORMAT_YCBCR_REV */
-
-static void
-pack_ubyte_YCBCR_REV(const GLubyte src[4], void *dst)
-{
-   /* todo */
-}
-
-static void
-pack_float_YCBCR_REV(const GLfloat src[4], void *dst)
-{
-   /* todo */
-}
-
-
-/* MESA_FORMAT_R_UNORM8 */
-
-static void
-pack_ubyte_R_UNORM8(const GLubyte src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   *d = src[RCOMP];
-}
-
-static void
-pack_float_R_UNORM8(const GLfloat src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   GLubyte r;
-   UNCLAMPED_FLOAT_TO_UBYTE(r, src[RCOMP]);
-   d[0] = r;
-}
-
-
-/* MESA_FORMAT_R8G8_UNORM */
-
-static void
-pack_ubyte_R8G8_UNORM(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   *d = PACK_COLOR_88(src[GCOMP], src[RCOMP]);
-}
-
-static void
-pack_float_R8G8_UNORM(const GLfloat src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   GLubyte r, g;
-   UNCLAMPED_FLOAT_TO_UBYTE(r, src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(g, src[GCOMP]);
-   *d = PACK_COLOR_88(g, r);
-}
-
-
-/* MESA_FORMAT_G8R8_UNORM */
-
-static void
-pack_ubyte_G8R8_UNORM(const GLubyte src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   *d = PACK_COLOR_88(src[RCOMP], src[GCOMP]);
-}
-
-static void
-pack_float_G8R8_UNORM(const GLfloat src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   GLubyte r, g;
-   UNCLAMPED_FLOAT_TO_UBYTE(r, src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(g, src[GCOMP]);
-   *d = PACK_COLOR_88(r, g);
-}
-
-
-/* MESA_FORMAT_R_UNORM16 */
-
-static void
-pack_ubyte_R_UNORM16(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   *d = UBYTE_TO_USHORT(src[RCOMP]);
-}
-
-static void
-pack_float_R_UNORM16(const GLfloat src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   UNCLAMPED_FLOAT_TO_USHORT(d[0], src[RCOMP]);
-}
-
-
-/* MESA_FORMAT_R16G16_UNORM */
-
-static void
-pack_ubyte_R16G16_UNORM(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort r = UBYTE_TO_USHORT(src[RCOMP]);
-   GLushort g = UBYTE_TO_USHORT(src[GCOMP]);
-   *d = PACK_COLOR_1616(g, r);
-}
-
-static void
-pack_float_R16G16_UNORM(const GLfloat src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort r, g;
-   UNCLAMPED_FLOAT_TO_USHORT(r, src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(g, src[GCOMP]);
-   *d = PACK_COLOR_1616(g, r);
-}
-
-
-/* MESA_FORMAT_G16R16_UNORM */
-
-static void
-pack_ubyte_G16R16_UNORM(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort r = UBYTE_TO_USHORT(src[RCOMP]);
-   GLushort g = UBYTE_TO_USHORT(src[GCOMP]);
-   *d = PACK_COLOR_1616(r, g);
-}
-
-
-static void
-pack_float_G16R16_UNORM(const GLfloat src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort r, g;
-   UNCLAMPED_FLOAT_TO_USHORT(r, src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(g, src[GCOMP]);
-   *d = PACK_COLOR_1616(r, g);
-}
-
-
-/* MESA_FORMAT_B10G10R10A2_UNORM */
-
-static void
-pack_ubyte_B10G10R10A2_UNORM(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort r = UBYTE_TO_USHORT(src[RCOMP]);
-   GLushort g = UBYTE_TO_USHORT(src[GCOMP]);
-   GLushort b = UBYTE_TO_USHORT(src[BCOMP]);
-   GLushort a = UBYTE_TO_USHORT(src[ACOMP]);
-   *d = PACK_COLOR_2101010_US(a, r, g, b);
-}
-
-static void
-pack_float_B10G10R10A2_UNORM(const GLfloat src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort r, g, b, a;
-   UNCLAMPED_FLOAT_TO_USHORT(r, src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(g, src[GCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(b, src[BCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(a, src[ACOMP]);
-   *d = PACK_COLOR_2101010_US(a, r, g, b);
-}
-
-
-/* MESA_FORMAT_R10G10B10A2_UINT */
-
-static void
-pack_ubyte_R10G10B10A2_UINT(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort r = UBYTE_TO_USHORT(src[RCOMP]);
-   GLushort g = UBYTE_TO_USHORT(src[GCOMP]);
-   GLushort b = UBYTE_TO_USHORT(src[BCOMP]);
-   GLushort a = UBYTE_TO_USHORT(src[ACOMP]);
-   *d = PACK_COLOR_2101010_US(a, b, g, r);
-}
-
-static void
-pack_float_R10G10B10A2_UINT(const GLfloat src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort r, g, b, a;
-   UNCLAMPED_FLOAT_TO_USHORT(r, src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(g, src[GCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(b, src[BCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(a, src[ACOMP]);
-   *d = PACK_COLOR_2101010_US(a, b, g, r);
-}
-
-
-/* MESA_FORMAT_BGR_SRGB8 */
-
-static void
-pack_ubyte_BGR_SRGB8(const GLubyte src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   d[2] = util_format_linear_to_srgb_8unorm(src[RCOMP]);
-   d[1] = util_format_linear_to_srgb_8unorm(src[GCOMP]);
-   d[0] = util_format_linear_to_srgb_8unorm(src[BCOMP]);
-}
-
-static void
-pack_float_BGR_SRGB8(const GLfloat src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   d[2] = util_format_linear_float_to_srgb_8unorm(src[RCOMP]);
-   d[1] = util_format_linear_float_to_srgb_8unorm(src[GCOMP]);
-   d[0] = util_format_linear_float_to_srgb_8unorm(src[BCOMP]);
-}
-
-
-/* MESA_FORMAT_A8B8G8R8_SRGB */
-
-static void
-pack_ubyte_A8B8G8R8_SRGB(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLubyte r = util_format_linear_to_srgb_8unorm(src[RCOMP]);
-   GLubyte g = util_format_linear_to_srgb_8unorm(src[GCOMP]);
-   GLubyte b = util_format_linear_to_srgb_8unorm(src[BCOMP]);
-   *d = PACK_COLOR_8888(r, g, b, src[ACOMP]);
-}
-
-static void
-pack_float_A8B8G8R8_SRGB(const GLfloat src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLubyte r, g, b, a;
-   r = util_format_linear_float_to_srgb_8unorm(src[RCOMP]);
-   g = util_format_linear_float_to_srgb_8unorm(src[GCOMP]);
-   b = util_format_linear_float_to_srgb_8unorm(src[BCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(a, src[ACOMP]);
-   *d = PACK_COLOR_8888(r, g, b, a);
-}
-
-
-/* MESA_FORMAT_B8G8R8A8_SRGB */
-
-static void
-pack_ubyte_B8G8R8A8_SRGB(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLubyte r = util_format_linear_to_srgb_8unorm(src[RCOMP]);
-   GLubyte g = util_format_linear_to_srgb_8unorm(src[GCOMP]);
-   GLubyte b = util_format_linear_to_srgb_8unorm(src[BCOMP]);
-   *d = PACK_COLOR_8888(src[ACOMP], r, g, b);
-}
-
-static void
-pack_float_B8G8R8A8_SRGB(const GLfloat src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLubyte r, g, b, a;
-   r = util_format_linear_float_to_srgb_8unorm(src[RCOMP]);
-   g = util_format_linear_float_to_srgb_8unorm(src[GCOMP]);
-   b = util_format_linear_float_to_srgb_8unorm(src[BCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(a, src[ACOMP]);
-   *d = PACK_COLOR_8888(a, r, g, b);
-}
-
-
-/* MESA_FORMAT_A8R8G8B8_SRGB */
-
-static void
-pack_ubyte_A8R8G8B8_SRGB(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLubyte r = util_format_linear_to_srgb_8unorm(src[RCOMP]);
-   GLubyte g = util_format_linear_to_srgb_8unorm(src[GCOMP]);
-   GLubyte b = util_format_linear_to_srgb_8unorm(src[BCOMP]);
-   *d = PACK_COLOR_8888(b, g, r, src[ACOMP]);
-}
-
-static void
-pack_float_A8R8G8B8_SRGB(const GLfloat src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLubyte r, g, b, a;
-   r = util_format_linear_float_to_srgb_8unorm(src[RCOMP]);
-   g = util_format_linear_float_to_srgb_8unorm(src[GCOMP]);
-   b = util_format_linear_float_to_srgb_8unorm(src[BCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(a, src[ACOMP]);
-   *d = PACK_COLOR_8888(b, g, r, a);
-}
-
-
-/* MESA_FORMAT_R8G8B8A8_SRGB */
-
-static void
-pack_ubyte_R8G8B8A8_SRGB(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLubyte r = util_format_linear_to_srgb_8unorm(src[RCOMP]);
-   GLubyte g = util_format_linear_to_srgb_8unorm(src[GCOMP]);
-   GLubyte b = util_format_linear_to_srgb_8unorm(src[BCOMP]);
-   *d = PACK_COLOR_8888(src[ACOMP], b, g, r);
-}
-
-static void
-pack_float_R8G8B8A8_SRGB(const GLfloat src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLubyte r, g, b, a;
-   r = util_format_linear_float_to_srgb_8unorm(src[RCOMP]);
-   g = util_format_linear_float_to_srgb_8unorm(src[GCOMP]);
-   b = util_format_linear_float_to_srgb_8unorm(src[BCOMP]);
-   UNCLAMPED_FLOAT_TO_UBYTE(a, src[ACOMP]);
-   *d = PACK_COLOR_8888(a, b, g, r);
-}
-
-
-/* MESA_FORMAT_L_SRGB8 */
-
-static void
-pack_ubyte_L_SRGB8(const GLubyte src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   *d = util_format_linear_to_srgb_8unorm(src[RCOMP]);
-}
-
-static void
-pack_float_L_SRGB8(const GLfloat src[4], void *dst)
-{
-   GLubyte *d = ((GLubyte *) dst);
-   GLubyte l = util_format_linear_float_to_srgb_8unorm(src[RCOMP]);
-   *d = l;
-}
-
-
-/* MESA_FORMAT_L8A8_SRGB */
-
-static void
-pack_ubyte_L8A8_SRGB(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   GLubyte l = util_format_linear_to_srgb_8unorm(src[RCOMP]);
-   *d = PACK_COLOR_88(src[ACOMP], l);
-}
-
-/* MESA_FORMAT_A8L8_SRGB */
-
-static void
-pack_ubyte_A8L8_SRGB(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   GLubyte l = util_format_linear_to_srgb_8unorm(src[RCOMP]);
-   *d = PACK_COLOR_88(l, src[ACOMP]);
-}
-
-static void
-pack_float_L8A8_SRGB(const GLfloat src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   GLubyte a, l = util_format_linear_float_to_srgb_8unorm(src[RCOMP]);
-   CLAMPED_FLOAT_TO_UBYTE(a, src[ACOMP]);
-   *d = PACK_COLOR_88(a, l);
-}
-
-static void
-pack_float_A8L8_SRGB(const GLfloat src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   GLubyte a, l = util_format_linear_float_to_srgb_8unorm(src[RCOMP]);
-   CLAMPED_FLOAT_TO_UBYTE(a, src[ACOMP]);
-   *d = PACK_COLOR_88(l, a);
-}
-
-
-/* MESA_FORMAT_RGBA_FLOAT32 */
-
-static void
-pack_ubyte_RGBA_FLOAT32(const GLubyte src[4], void *dst)
-{
-   GLfloat *d = ((GLfloat *) dst);
-   d[0] = UBYTE_TO_FLOAT(src[0]);
-   d[1] = UBYTE_TO_FLOAT(src[1]);
-   d[2] = UBYTE_TO_FLOAT(src[2]);
-   d[3] = UBYTE_TO_FLOAT(src[3]);
-}
-
-static void
-pack_float_RGBA_FLOAT32(const GLfloat src[4], void *dst)
-{
-   GLfloat *d = ((GLfloat *) dst);
-   d[0] = src[0];
-   d[1] = src[1];
-   d[2] = src[2];
-   d[3] = src[3];
-}
-
-
-/* MESA_FORMAT_RGBA_FLOAT16 */
-
-static void
-pack_ubyte_RGBA_FLOAT16(const GLubyte src[4], void *dst)
-{
-   GLhalfARB *d = ((GLhalfARB *) dst);
-   d[0] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[0]));
-   d[1] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[1]));
-   d[2] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[2]));
-   d[3] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[3]));
-}
-
-static void
-pack_float_RGBA_FLOAT16(const GLfloat src[4], void *dst)
-{
-   GLhalfARB *d = ((GLhalfARB *) dst);
-   d[0] = _mesa_float_to_half(src[0]);
-   d[1] = _mesa_float_to_half(src[1]);
-   d[2] = _mesa_float_to_half(src[2]);
-   d[3] = _mesa_float_to_half(src[3]);
-}
-
-
-/* MESA_FORMAT_RGB_FLOAT32 */
-
-static void
-pack_ubyte_RGB_FLOAT32(const GLubyte src[4], void *dst)
-{
-   GLfloat *d = ((GLfloat *) dst);
-   d[0] = UBYTE_TO_FLOAT(src[0]);
-   d[1] = UBYTE_TO_FLOAT(src[1]);
-   d[2] = UBYTE_TO_FLOAT(src[2]);
-}
-
-static void
-pack_float_RGB_FLOAT32(const GLfloat src[4], void *dst)
-{
-   GLfloat *d = ((GLfloat *) dst);
-   d[0] = src[0];
-   d[1] = src[1];
-   d[2] = src[2];
-}
-
-
-/* MESA_FORMAT_RGB_FLOAT16 */
-
-static void
-pack_ubyte_RGB_FLOAT16(const GLubyte src[4], void *dst)
-{
-   GLhalfARB *d = ((GLhalfARB *) dst);
-   d[0] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[0]));
-   d[1] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[1]));
-   d[2] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[2]));
-}
-
-static void
-pack_float_RGB_FLOAT16(const GLfloat src[4], void *dst)
-{
-   GLhalfARB *d = ((GLhalfARB *) dst);
-   d[0] = _mesa_float_to_half(src[0]);
-   d[1] = _mesa_float_to_half(src[1]);
-   d[2] = _mesa_float_to_half(src[2]);
-}
-
-
-/* MESA_FORMAT_A_FLOAT32 */
-
-static void
-pack_ubyte_A_FLOAT32(const GLubyte src[4], void *dst)
-{
-   GLfloat *d = ((GLfloat *) dst);
-   d[0] = UBYTE_TO_FLOAT(src[ACOMP]);
-}
-
-static void
-pack_float_A_FLOAT32(const GLfloat src[4], void *dst)
-{
-   GLfloat *d = ((GLfloat *) dst);
-   d[0] = src[ACOMP];
-}
-
-
-/* MESA_FORMAT_A_FLOAT16 */
-
-static void
-pack_ubyte_A_FLOAT16(const GLubyte src[4], void *dst)
-{
-   GLhalfARB *d = ((GLhalfARB *) dst);
-   d[0] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[ACOMP]));
-}
-
-static void
-pack_float_A_FLOAT16(const GLfloat src[4], void *dst)
-{
-   GLhalfARB *d = ((GLhalfARB *) dst);
-   d[0] = _mesa_float_to_half(src[ACOMP]);
-}
-
-
-/* MESA_FORMAT_L_FLOAT32 (and I_FLOAT32, R_FLOAT32) */
-
-static void
-pack_ubyte_L_FLOAT32(const GLubyte src[4], void *dst)
-{
-   GLfloat *d = ((GLfloat *) dst);
-   d[0] = UBYTE_TO_FLOAT(src[RCOMP]);
-}
-
-static void
-pack_float_L_FLOAT32(const GLfloat src[4], void *dst)
-{
-   GLfloat *d = ((GLfloat *) dst);
-   d[0] = src[RCOMP];
-}
-
-
-/* MESA_FORMAT_L_FLOAT16 (and I_FLOAT16, R_FLOAT32) */
-
-static void
-pack_ubyte_L_FLOAT16(const GLubyte src[4], void *dst)
-{
-   GLhalfARB *d = ((GLhalfARB *) dst);
-   d[0] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[RCOMP]));
-}
-
-static void
-pack_float_L_FLOAT16(const GLfloat src[4], void *dst)
-{
-   GLhalfARB *d = ((GLhalfARB *) dst);
-   d[0] = _mesa_float_to_half(src[RCOMP]);
-}
-
-
-/* MESA_FORMAT_LA_FLOAT32 */
-
-static void
-pack_ubyte_LA_FLOAT32(const GLubyte src[4], void *dst)
-{
-   GLfloat *d = ((GLfloat *) dst);
-   d[0] = UBYTE_TO_FLOAT(src[RCOMP]);
-   d[1] = UBYTE_TO_FLOAT(src[ACOMP]);
-}
-
-static void
-pack_float_LA_FLOAT32(const GLfloat src[4], void *dst)
-{
-   GLfloat *d = ((GLfloat *) dst);
-   d[0] = src[RCOMP];
-   d[1] = src[ACOMP];
-}
-
-
-/* MESA_FORMAT_LA_FLOAT16 */
-
-static void
-pack_ubyte_LA_FLOAT16(const GLubyte src[4], void *dst)
-{
-   GLhalfARB *d = ((GLhalfARB *) dst);
-   d[0] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[RCOMP]));
-   d[1] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[ACOMP]));
-}
-
-static void
-pack_float_LA_FLOAT16(const GLfloat src[4], void *dst)
-{
-   GLhalfARB *d = ((GLhalfARB *) dst);
-   d[0] = _mesa_float_to_half(src[RCOMP]);
-   d[1] = _mesa_float_to_half(src[ACOMP]);
-}
-
-
-/* MESA_FORMAT_RG_FLOAT32 */
-
-static void
-pack_ubyte_RG_FLOAT32(const GLubyte src[4], void *dst)
-{
-   GLfloat *d = ((GLfloat *) dst);
-   d[0] = UBYTE_TO_FLOAT(src[RCOMP]);
-   d[1] = UBYTE_TO_FLOAT(src[GCOMP]);
-}
-
-static void
-pack_float_RG_FLOAT32(const GLfloat src[4], void *dst)
-{
-   GLfloat *d = ((GLfloat *) dst);
-   d[0] = src[RCOMP];
-   d[1] = src[GCOMP];
-}
-
-
-/* MESA_FORMAT_RG_FLOAT16 */
-
-static void
-pack_ubyte_RG_FLOAT16(const GLubyte src[4], void *dst)
-{
-   GLhalfARB *d = ((GLhalfARB *) dst);
-   d[0] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[RCOMP]));
-   d[1] = _mesa_float_to_half(UBYTE_TO_FLOAT(src[GCOMP]));
-}
-
-static void
-pack_float_RG_FLOAT16(const GLfloat src[4], void *dst)
-{
-   GLhalfARB *d = ((GLhalfARB *) dst);
-   d[0] = _mesa_float_to_half(src[RCOMP]);
-   d[1] = _mesa_float_to_half(src[GCOMP]);
-}
-
-
-/* MESA_FORMAT_RGBA_UNORM16 */
-
-static void
-pack_ubyte_RGBA_16(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   d[0] = UBYTE_TO_USHORT(src[RCOMP]);
-   d[1] = UBYTE_TO_USHORT(src[GCOMP]);
-   d[2] = UBYTE_TO_USHORT(src[BCOMP]);
-   d[3] = UBYTE_TO_USHORT(src[ACOMP]);
-}
-
-static void
-pack_float_RGBA_16(const GLfloat src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   UNCLAMPED_FLOAT_TO_USHORT(d[0], src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(d[1], src[GCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(d[2], src[BCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(d[3], src[ACOMP]);
-}
-
-
-
-/*
- * MESA_FORMAT_R_SNORM8
- */
-
-static void
-pack_float_R_SNORM8(const GLfloat src[4], void *dst)
-{
-   GLbyte *d = (GLbyte *) dst;
-   *d = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
-}
-
-
-/*
- * MESA_FORMAT_R8G8_SNORM
- */
-
-static void
-pack_float_R8G8_SNORM(const GLfloat src[4], void *dst)
-{
-   GLushort *d = (GLushort *) dst;
-   GLbyte r = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
-   GLbyte g = FLOAT_TO_BYTE(CLAMP(src[GCOMP], -1.0f, 1.0f));
-   *d = (g << 8) | r;
-}
-
-
-/*
- * MESA_FORMAT_X8B8G8R8_SNORM
- */
-
-static void
-pack_float_X8B8G8R8_SNORM(const GLfloat src[4], void *dst)
-{
-   GLuint *d = (GLuint *) dst;
-   GLbyte r = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
-   GLbyte g = FLOAT_TO_BYTE(CLAMP(src[GCOMP], -1.0f, 1.0f));
-   GLbyte b = FLOAT_TO_BYTE(CLAMP(src[BCOMP], -1.0f, 1.0f));
-   GLbyte a = 127;
-   *d = PACK_COLOR_8888(r, g, b, a);
-}
-
-
-/*
- * MESA_FORMAT_A8B8G8R8_SNORM
- */
-
-static void
-pack_float_A8B8G8R8_SNORM(const GLfloat src[4], void *dst)
-{
-   GLuint *d = (GLuint *) dst;
-   GLbyte r = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
-   GLbyte g = FLOAT_TO_BYTE(CLAMP(src[GCOMP], -1.0f, 1.0f));
-   GLbyte b = FLOAT_TO_BYTE(CLAMP(src[BCOMP], -1.0f, 1.0f));
-   GLbyte a = FLOAT_TO_BYTE(CLAMP(src[ACOMP], -1.0f, 1.0f));
-   *d = PACK_COLOR_8888(r, g, b, a);
-}
-
-
-/*
- * MESA_FORMAT_R8G8B8A8_SNORM
- */
-
-static void
-pack_float_R8G8B8A8_SNORM(const GLfloat src[4], void *dst)
-{
-   GLuint *d = (GLuint *) dst;
-   GLbyte r = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
-   GLbyte g = FLOAT_TO_BYTE(CLAMP(src[GCOMP], -1.0f, 1.0f));
-   GLbyte b = FLOAT_TO_BYTE(CLAMP(src[BCOMP], -1.0f, 1.0f));
-   GLbyte a = FLOAT_TO_BYTE(CLAMP(src[ACOMP], -1.0f, 1.0f));
-   *d = PACK_COLOR_8888(a, b, g, r);
-}
-
-
-/*
- * MESA_FORMAT_R_SNORM16
- */
-
-static void
-pack_float_R_SNORM16(const GLfloat src[4], void *dst)
-{
-   GLshort *d = (GLshort *) dst;
-   *d = FLOAT_TO_SHORT(CLAMP(src[RCOMP], -1.0f, 1.0f));
-}
-
-
-/*
- * MESA_FORMAT_R16G16_SNORM
- */
-
-static void
-pack_float_R16G16_SNORM(const GLfloat src[4], void *dst)
-{
-   GLuint *d = (GLuint *) dst;
-   GLshort r = FLOAT_TO_SHORT(CLAMP(src[RCOMP], -1.0f, 1.0f));
-   GLshort g = FLOAT_TO_SHORT(CLAMP(src[GCOMP], -1.0f, 1.0f));
-   *d = (g << 16) | (r & 0xffff);
-}
-
-
-/*
- * MESA_FORMAT_RGB_SNORM16
- */
-
-static void
-pack_float_RGB_SNORM16(const GLfloat src[4], void *dst)
-{
-   GLshort *d = (GLshort *) dst;
-   d[0] = FLOAT_TO_SHORT(CLAMP(src[RCOMP], -1.0f, 1.0f));
-   d[1] = FLOAT_TO_SHORT(CLAMP(src[GCOMP], -1.0f, 1.0f));
-   d[2] = FLOAT_TO_SHORT(CLAMP(src[BCOMP], -1.0f, 1.0f));
-}
-
-
-/*
- * MESA_FORMAT_RGBA_SNORM16
- */
-
-static void
-pack_float_RGBA_SNORM16(const GLfloat src[4], void *dst)
-{
-   GLshort *d = (GLshort *) dst;
-   d[0] = FLOAT_TO_SHORT(CLAMP(src[RCOMP], -1.0f, 1.0f));
-   d[1] = FLOAT_TO_SHORT(CLAMP(src[GCOMP], -1.0f, 1.0f));
-   d[2] = FLOAT_TO_SHORT(CLAMP(src[BCOMP], -1.0f, 1.0f));
-   d[3] = FLOAT_TO_SHORT(CLAMP(src[ACOMP], -1.0f, 1.0f));
-}
-
-
-/*
- * MESA_FORMAT_A_SNORM8
- */
-
-static void
-pack_float_A_SNORM8(const GLfloat src[4], void *dst)
-{
-   GLbyte *d = (GLbyte *) dst;
-   *d = FLOAT_TO_BYTE(CLAMP(src[ACOMP], -1.0f, 1.0f));
-}
-
-
-/*
- * MESA_FORMAT_L_SNORM8
- */
-
-static void
-pack_float_L_SNORM8(const GLfloat src[4], void *dst)
-{
-   GLbyte *d = (GLbyte *) dst;
-   *d = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
-}
-
-
-/*
- * MESA_FORMAT_L8A8_SNORM
- */
-
-static void
-pack_float_L8A8_SNORM(const GLfloat src[4], void *dst)
-{
-   GLushort *d = (GLushort *) dst;
-   GLbyte l = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
-   GLbyte a = FLOAT_TO_BYTE(CLAMP(src[ACOMP], -1.0f, 1.0f));
-   *d = (a << 8) | l;
-}
-
-
-/*
- * MESA_FORMAT_A8L8_SNORM
- */
-
-static void
-pack_float_A8L8_SNORM(const GLfloat src[4], void *dst)
-{
-   GLushort *d = (GLushort *) dst;
-   GLbyte l = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
-   GLbyte a = FLOAT_TO_BYTE(CLAMP(src[ACOMP], -1.0f, 1.0f));
-   *d = (l << 8) | a;
-}
-
-
-/*
- * MESA_FORMAT_A_SNORM16
- */
-
-static void
-pack_float_A_SNORM16(const GLfloat src[4], void *dst)
-{
-   GLshort *d = (GLshort *) dst;
-   *d = FLOAT_TO_SHORT(CLAMP(src[ACOMP], -1.0f, 1.0f));
-}
-
-
-/*
- * MESA_FORMAT_L_SNORM16
- */
-
-static void
-pack_float_L_SNORM16(const GLfloat src[4], void *dst)
-{
-   GLshort *d = (GLshort *) dst;
-   *d = FLOAT_TO_SHORT(CLAMP(src[RCOMP], -1.0f, 1.0f));
-}
-
-
-/*
- * MESA_FORMAT_LA_SNORM16
- */
-
-static void
-pack_float_LA_SNORM16(const GLfloat src[4], void *dst)
-{
-   GLuint *d = (GLuint *) dst;
-   GLshort l = FLOAT_TO_SHORT(CLAMP(src[RCOMP], -1.0f, 1.0f));
-   GLshort a = FLOAT_TO_SHORT(CLAMP(src[ACOMP], -1.0f, 1.0f));
-   *d = PACK_COLOR_1616(a, l);
-}
-
-
-/*
- * MESA_FORMAT_R9G9B9E5_FLOAT;
- */
-
-static void
-pack_float_R9G9B9E5_FLOAT(const GLfloat src[4], void *dst)
-{
-   GLuint *d = (GLuint *) dst;
-   *d = float3_to_rgb9e5(src);
-}
-
-static void
-pack_ubyte_R9G9B9E5_FLOAT(const GLubyte src[4], void *dst)
-{
-   GLuint *d = (GLuint *) dst;
-   GLfloat rgb[3];
-   rgb[0] = UBYTE_TO_FLOAT(src[RCOMP]);
-   rgb[1] = UBYTE_TO_FLOAT(src[GCOMP]);
-   rgb[2] = UBYTE_TO_FLOAT(src[BCOMP]);
-   *d = float3_to_rgb9e5(rgb);
-}
-
-
-
-/*
- * MESA_FORMAT_R11G11B10_FLOAT;
- */
-
-static void
-pack_ubyte_R11G11B10_FLOAT(const GLubyte src[4], void *dst)
-{
-   GLuint *d = (GLuint *) dst;
-   GLfloat rgb[3];
-   rgb[0] = UBYTE_TO_FLOAT(src[RCOMP]);
-   rgb[1] = UBYTE_TO_FLOAT(src[GCOMP]);
-   rgb[2] = UBYTE_TO_FLOAT(src[BCOMP]);
-   *d = float3_to_r11g11b10f(rgb);
-}
-
-static void
-pack_float_R11G11B10_FLOAT(const GLfloat src[4], void *dst)
-{
-   GLuint *d = (GLuint *) dst;
-   *d = float3_to_r11g11b10f(src);
-}
-
-
-/*
- * MESA_FORMAT_B4G4R4X4_UNORM
- */
-
-static void
-pack_ubyte_XRGB4444_UNORM(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   *d = PACK_COLOR_4444(255, src[RCOMP], src[GCOMP], src[BCOMP]);
-}
-
-static void
-pack_float_XRGB4444_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   _mesa_unclamped_float_rgba_to_ubyte(v, src);
-   pack_ubyte_XRGB4444_UNORM(v, dst);
-}
-
-
-/*
- * MESA_FORMAT_B5G5R5X1_UNORM
- */
-
-static void
-pack_ubyte_XRGB1555_UNORM(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   *d = PACK_COLOR_1555(255, src[RCOMP], src[GCOMP], src[BCOMP]);
-}
-
-static void
-pack_float_XRGB1555_UNORM(const GLfloat src[4], void *dst)
-{
-   GLubyte v[4];
-   _mesa_unclamped_float_rgba_to_ubyte(v, src);
-   pack_ubyte_XRGB1555_UNORM(v, dst);
-}
-
-
-/*
- * MESA_FORMAT_R8G8B8X8_SNORM
- */
-
-static void
-pack_float_XBGR8888_SNORM(const GLfloat src[4], void *dst)
-{
-   GLuint *d = (GLuint *) dst;
-   GLbyte r = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
-   GLbyte g = FLOAT_TO_BYTE(CLAMP(src[GCOMP], -1.0f, 1.0f));
-   GLbyte b = FLOAT_TO_BYTE(CLAMP(src[BCOMP], -1.0f, 1.0f));
-   *d = PACK_COLOR_8888(127, b, g, r);
-}
-
-
-/*
- * MESA_FORMAT_R8G8B8X8_SRGB
- */
-
-static void
-pack_float_R8G8B8X8_SRGB(const GLfloat src[4], void *dst)
-{
-   GLuint *d = (GLuint *) dst;
-   GLubyte r = util_format_linear_float_to_srgb_8unorm(src[RCOMP]);
-   GLubyte g = util_format_linear_float_to_srgb_8unorm(src[GCOMP]);
-   GLubyte b = util_format_linear_float_to_srgb_8unorm(src[BCOMP]);
-   *d = PACK_COLOR_8888(255, b, g, r);
-}
-
-
-/*
- * MESA_FORMAT_X8B8G8R8_SRGB
- */
-
-static void
-pack_float_X8B8G8R8_SRGB(const GLfloat src[4], void *dst)
-{
-   GLuint *d = (GLuint *) dst;
-   GLubyte r = util_format_linear_float_to_srgb_8unorm(src[RCOMP]);
-   GLubyte g = util_format_linear_float_to_srgb_8unorm(src[GCOMP]);
-   GLubyte b = util_format_linear_float_to_srgb_8unorm(src[BCOMP]);
-   *d = PACK_COLOR_8888(r, g, b, 255);
-}
-
-
-/* MESA_FORMAT_B10G10R10X2_UNORM */
-
-static void
-pack_ubyte_B10G10R10X2_UNORM(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort r = UBYTE_TO_USHORT(src[RCOMP]);
-   GLushort g = UBYTE_TO_USHORT(src[GCOMP]);
-   GLushort b = UBYTE_TO_USHORT(src[BCOMP]);
-   *d = PACK_COLOR_2101010_US(3, r, g, b);
-}
-
-static void
-pack_float_B10G10R10X2_UNORM(const GLfloat src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort r, g, b;
-   UNCLAMPED_FLOAT_TO_USHORT(r, src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(g, src[GCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(b, src[BCOMP]);
-   *d = PACK_COLOR_2101010_US(3, r, g, b);
-}
-
-
-/* MESA_FORMAT_RGBX_UNORM16 */
-
-static void
-pack_ubyte_RGBX_UNORM16(const GLubyte src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   d[0] = UBYTE_TO_USHORT(src[RCOMP]);
-   d[1] = UBYTE_TO_USHORT(src[GCOMP]);
-   d[2] = UBYTE_TO_USHORT(src[BCOMP]);
-   d[3] = 65535;
-}
-
-static void
-pack_float_RGBX_UNORM16(const GLfloat src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   UNCLAMPED_FLOAT_TO_USHORT(d[0], src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(d[1], src[GCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(d[2], src[BCOMP]);
-   d[3] = 65535;
-}
-
-
-/* MESA_FORMAT_RGBX_SNORM16 */
-
-static void
-pack_float_RGBX_SNORM16(const GLfloat src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   UNCLAMPED_FLOAT_TO_SHORT(d[0], src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_SHORT(d[1], src[GCOMP]);
-   UNCLAMPED_FLOAT_TO_SHORT(d[2], src[BCOMP]);
-   d[3] = 32767;
-}
-
-
-/* MESA_FORMAT_RGBX_FLOAT16 */
-
-static void
-pack_float_XBGR16161616_FLOAT(const GLfloat src[4], void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   d[0] = _mesa_float_to_half(src[RCOMP]);
-   d[1] = _mesa_float_to_half(src[GCOMP]);
-   d[2] = _mesa_float_to_half(src[BCOMP]);
-   d[3] = _mesa_float_to_half(1.0);
-}
-
-/* MESA_FORMAT_RGBX_FLOAT32 */
-
-static void
-pack_float_RGBX_FLOAT32(const GLfloat src[4], void *dst)
-{
-   GLfloat *d = ((GLfloat *) dst);
-   d[0] = src[RCOMP];
-   d[1] = src[GCOMP];
-   d[2] = src[BCOMP];
-   d[3] = 1.0;
-}
-
-/* MESA_FORMAT_R10G10B10A2_UNORM */
-
-static void
-pack_ubyte_R10G10B10A2_UNORM(const GLubyte src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort r = UBYTE_TO_USHORT(src[RCOMP]);
-   GLushort g = UBYTE_TO_USHORT(src[GCOMP]);
-   GLushort b = UBYTE_TO_USHORT(src[BCOMP]);
-   GLushort a = UBYTE_TO_USHORT(src[ACOMP]);
-   *d = PACK_COLOR_2101010_US(a, b, g, r);
-}
-
-static void
-pack_float_R10G10B10A2_UNORM(const GLfloat src[4], void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   GLushort r, g, b, a;
-   UNCLAMPED_FLOAT_TO_USHORT(r, src[RCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(g, src[GCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(b, src[BCOMP]);
-   UNCLAMPED_FLOAT_TO_USHORT(a, src[ACOMP]);
-   *d = PACK_COLOR_2101010_US(a, b, g, r);
-}
-
-/*
- * MESA_FORMAT_G8R8_SNORM
- */
-
-static void
-pack_float_G8R8_SNORM(const GLfloat src[4], void *dst)
-{
-   GLushort *d = (GLushort *) dst;
-   GLbyte r = FLOAT_TO_BYTE(CLAMP(src[RCOMP], -1.0f, 1.0f));
-   GLbyte g = FLOAT_TO_BYTE(CLAMP(src[GCOMP], -1.0f, 1.0f));
-   *d = (r << 8) | (g & 0xff);
-}
-
-/*
- * MESA_FORMAT_G16R16_SNORM
- */
-
-static void
-pack_float_G16R16_SNORM(const GLfloat src[4], void *dst)
-{
-   GLuint *d = (GLuint *) dst;
-   GLshort r = FLOAT_TO_SHORT(CLAMP(src[RCOMP], -1.0f, 1.0f));
-   GLshort g = FLOAT_TO_SHORT(CLAMP(src[GCOMP], -1.0f, 1.0f));
-   *d = (r << 16) | (g & 0xffff);
-}
-
-/*
- * MESA_FORMAT_B8G8R8X8_SRGB
- */
-
-static void
-pack_float_B8G8R8X8_SRGB(const GLfloat src[4], void *dst)
-{
-   GLuint *d = (GLuint *) dst;
-   GLubyte r = util_format_linear_float_to_srgb_8unorm(src[RCOMP]);
-   GLubyte g = util_format_linear_float_to_srgb_8unorm(src[GCOMP]);
-   GLubyte b = util_format_linear_float_to_srgb_8unorm(src[BCOMP]);
-   *d = PACK_COLOR_8888(127, r, g, b);
-}
-
-/*
- * MESA_FORMAT_X8R8G8B8_SRGB
- */
-
-static void
-pack_float_X8R8G8B8_SRGB(const GLfloat src[4], void *dst)
-{
-   GLuint *d = (GLuint *) dst;
-   GLubyte r = util_format_linear_float_to_srgb_8unorm(src[RCOMP]);
-   GLubyte g = util_format_linear_float_to_srgb_8unorm(src[GCOMP]);
-   GLubyte b = util_format_linear_float_to_srgb_8unorm(src[BCOMP]);
-   *d = PACK_COLOR_8888(b, g, r, 255);
-}
-
-/**
- * Return a function that can pack a GLubyte rgba[4] color.
- */
-gl_pack_ubyte_rgba_func
-_mesa_get_pack_ubyte_rgba_function(mesa_format format)
-{
-   static gl_pack_ubyte_rgba_func table[MESA_FORMAT_COUNT];
-   static GLboolean initialized = GL_FALSE;
-
-   if (!initialized) {
-      memset(table, 0, sizeof(table));
-
-      table[MESA_FORMAT_NONE] = NULL;
-
-      table[MESA_FORMAT_A8B8G8R8_UNORM] = pack_ubyte_A8B8G8R8_UNORM;
-      table[MESA_FORMAT_R8G8B8A8_UNORM] = pack_ubyte_R8G8B8A8_UNORM;
-      table[MESA_FORMAT_B8G8R8A8_UNORM] = pack_ubyte_B8G8R8A8_UNORM;
-      table[MESA_FORMAT_A8R8G8B8_UNORM] = pack_ubyte_A8R8G8B8_UNORM;
-      table[MESA_FORMAT_X8B8G8R8_UNORM] = pack_ubyte_A8B8G8R8_UNORM; /* reused */
-      table[MESA_FORMAT_R8G8B8X8_UNORM] = pack_ubyte_R8G8B8A8_UNORM; /* reused */
-      table[MESA_FORMAT_B8G8R8X8_UNORM] = pack_ubyte_B8G8R8X8_UNORM;
-      table[MESA_FORMAT_X8R8G8B8_UNORM] = pack_ubyte_X8R8G8B8_UNORM;
-      table[MESA_FORMAT_BGR_UNORM8] = pack_ubyte_BGR_UNORM8;
-      table[MESA_FORMAT_RGB_UNORM8] = pack_ubyte_RGB_UNORM8;
-      table[MESA_FORMAT_B5G6R5_UNORM] = pack_ubyte_B5G6R5_UNORM;
-      table[MESA_FORMAT_R5G6B5_UNORM] = pack_ubyte_R5G6B5_UNORM;
-      table[MESA_FORMAT_B4G4R4A4_UNORM] = pack_ubyte_B4G4R4A4_UNORM;
-      table[MESA_FORMAT_A4R4G4B4_UNORM] = pack_ubyte_A4R4G4B4_UNORM;
-      table[MESA_FORMAT_A1B5G5R5_UNORM] = pack_ubyte_A1B5G5R5_UNORM;
-      table[MESA_FORMAT_B5G5R5A1_UNORM] = pack_ubyte_B5G5R5A1_UNORM;
-      table[MESA_FORMAT_A1R5G5B5_UNORM] = pack_ubyte_A1R5G5B5_UNORM;
-      table[MESA_FORMAT_L4A4_UNORM] = pack_ubyte_L4A4_UNORM;
-      table[MESA_FORMAT_L8A8_UNORM] = pack_ubyte_L8A8_UNORM;
-      table[MESA_FORMAT_A8L8_UNORM] = pack_ubyte_A8L8_UNORM;
-      table[MESA_FORMAT_L16A16_UNORM] = pack_ubyte_L16A16_UNORM;
-      table[MESA_FORMAT_A16L16_UNORM] = pack_ubyte_A16L16_UNORM;
-      table[MESA_FORMAT_B2G3R3_UNORM] = pack_ubyte_B2G3R3_UNORM;
-      table[MESA_FORMAT_A_UNORM8] = pack_ubyte_A_UNORM8;
-      table[MESA_FORMAT_A_UNORM16] = pack_ubyte_A_UNORM16;
-      table[MESA_FORMAT_L_UNORM8] = pack_ubyte_L_UNORM8;
-      table[MESA_FORMAT_L_UNORM16] = pack_ubyte_L_UNORM16;
-      table[MESA_FORMAT_I_UNORM8] = pack_ubyte_L_UNORM8; /* reuse pack_ubyte_L_UNORM8 */
-      table[MESA_FORMAT_I_UNORM16] = pack_ubyte_L_UNORM16; /* reuse pack_ubyte_L_UNORM16 */
-      table[MESA_FORMAT_YCBCR] = pack_ubyte_YCBCR;
-      table[MESA_FORMAT_YCBCR_REV] = pack_ubyte_YCBCR_REV;
-      table[MESA_FORMAT_R_UNORM8] = pack_ubyte_R_UNORM8;
-      table[MESA_FORMAT_R8G8_UNORM] = pack_ubyte_R8G8_UNORM;
-      table[MESA_FORMAT_G8R8_UNORM] = pack_ubyte_G8R8_UNORM;
-      table[MESA_FORMAT_R_UNORM16] = pack_ubyte_R_UNORM16;
-      table[MESA_FORMAT_R16G16_UNORM] = pack_ubyte_R16G16_UNORM;
-      table[MESA_FORMAT_G16R16_UNORM] = pack_ubyte_G16R16_UNORM;
-      table[MESA_FORMAT_B10G10R10A2_UNORM] = pack_ubyte_B10G10R10A2_UNORM;
-      table[MESA_FORMAT_R10G10B10A2_UINT] = pack_ubyte_R10G10B10A2_UINT;
-
-      /* should never convert RGBA to these formats */
-      table[MESA_FORMAT_S8_UINT_Z24_UNORM] = NULL;
-      table[MESA_FORMAT_Z24_UNORM_S8_UINT] = NULL;
-      table[MESA_FORMAT_Z_UNORM16] = NULL;
-      table[MESA_FORMAT_Z24_UNORM_X8_UINT] = NULL;
-      table[MESA_FORMAT_X8_UINT_Z24_UNORM] = NULL;
-      table[MESA_FORMAT_Z_UNORM32] = NULL;
-      table[MESA_FORMAT_S_UINT8] = NULL;
-
-      /* sRGB */
-      table[MESA_FORMAT_BGR_SRGB8] = pack_ubyte_BGR_SRGB8;
-      table[MESA_FORMAT_A8B8G8R8_SRGB] = pack_ubyte_A8B8G8R8_SRGB;
-      table[MESA_FORMAT_B8G8R8A8_SRGB] = pack_ubyte_B8G8R8A8_SRGB;
-      table[MESA_FORMAT_A8R8G8B8_SRGB] = pack_ubyte_A8R8G8B8_SRGB;
-      table[MESA_FORMAT_R8G8B8A8_SRGB] = pack_ubyte_R8G8B8A8_SRGB;
-      table[MESA_FORMAT_L_SRGB8] = pack_ubyte_L_SRGB8;
-      table[MESA_FORMAT_L8A8_SRGB] = pack_ubyte_L8A8_SRGB;
-      table[MESA_FORMAT_A8L8_SRGB] = pack_ubyte_A8L8_SRGB;
-      /* n/a */
-      table[MESA_FORMAT_SRGB_DXT1] = NULL; /* pack_ubyte_SRGB_DXT1; */
-      table[MESA_FORMAT_SRGBA_DXT1] = NULL; /* pack_ubyte_SRGBA_DXT1; */
-      table[MESA_FORMAT_SRGBA_DXT3] = NULL; /* pack_ubyte_SRGBA_DXT3; */
-      table[MESA_FORMAT_SRGBA_DXT5] = NULL; /* pack_ubyte_SRGBA_DXT5; */
-
-      table[MESA_FORMAT_RGB_FXT1] = NULL; /* pack_ubyte_RGB_FXT1; */
-      table[MESA_FORMAT_RGBA_FXT1] = NULL; /* pack_ubyte_RGBA_FXT1; */
-      table[MESA_FORMAT_RGB_DXT1] = NULL; /* pack_ubyte_RGB_DXT1; */
-      table[MESA_FORMAT_RGBA_DXT1] = NULL; /* pack_ubyte_RGBA_DXT1; */
-      table[MESA_FORMAT_RGBA_DXT3] = NULL; /* pack_ubyte_RGBA_DXT3; */
-      table[MESA_FORMAT_RGBA_DXT5] = NULL; /* pack_ubyte_RGBA_DXT5; */
-
-      table[MESA_FORMAT_RGBA_FLOAT32] = pack_ubyte_RGBA_FLOAT32;
-      table[MESA_FORMAT_RGBA_FLOAT16] = pack_ubyte_RGBA_FLOAT16;
-      table[MESA_FORMAT_RGB_FLOAT32] = pack_ubyte_RGB_FLOAT32;
-      table[MESA_FORMAT_RGB_FLOAT16] = pack_ubyte_RGB_FLOAT16;
-      table[MESA_FORMAT_A_FLOAT32] = pack_ubyte_A_FLOAT32;
-      table[MESA_FORMAT_A_FLOAT16] = pack_ubyte_A_FLOAT16;
-      table[MESA_FORMAT_L_FLOAT32] = pack_ubyte_L_FLOAT32;
-      table[MESA_FORMAT_L_FLOAT16] = pack_ubyte_L_FLOAT16;
-      table[MESA_FORMAT_LA_FLOAT32] = pack_ubyte_LA_FLOAT32;
-      table[MESA_FORMAT_LA_FLOAT16] = pack_ubyte_LA_FLOAT16;
-      table[MESA_FORMAT_I_FLOAT32] = pack_ubyte_L_FLOAT32;
-      table[MESA_FORMAT_I_FLOAT16] = pack_ubyte_L_FLOAT16;
-      table[MESA_FORMAT_R_FLOAT32] = pack_ubyte_L_FLOAT32;
-      table[MESA_FORMAT_R_FLOAT16] = pack_ubyte_L_FLOAT16;
-      table[MESA_FORMAT_RG_FLOAT32] = pack_ubyte_RG_FLOAT32;
-      table[MESA_FORMAT_RG_FLOAT16] = pack_ubyte_RG_FLOAT16;
-
-      /* n/a */
-      table[MESA_FORMAT_RGBA_SINT8] = NULL; /* pack_ubyte_RGBA_INT8 */
-      table[MESA_FORMAT_RGBA_SINT16] = NULL; /* pack_ubyte_RGBA_INT16 */
-      table[MESA_FORMAT_RGBA_SINT32] = NULL; /* pack_ubyte_RGBA_INT32 */
-      table[MESA_FORMAT_RGBA_UINT8] = NULL; /* pack_ubyte_RGBA_UINT8 */
-      table[MESA_FORMAT_RGBA_UINT16] = NULL; /* pack_ubyte_RGBA_UINT16 */
-      table[MESA_FORMAT_RGBA_UINT32] = NULL; /* pack_ubyte_RGBA_UINT32 */
-
-      table[MESA_FORMAT_RGBA_UNORM16] = pack_ubyte_RGBA_16;
-
-      /* n/a */
-      table[MESA_FORMAT_R_SNORM8] = NULL;
-      table[MESA_FORMAT_R8G8_SNORM] = NULL;
-      table[MESA_FORMAT_X8B8G8R8_SNORM] = NULL;
-      table[MESA_FORMAT_A8B8G8R8_SNORM] = NULL;
-      table[MESA_FORMAT_R8G8B8A8_SNORM] = NULL;
-      table[MESA_FORMAT_R_SNORM16] = NULL;
-      table[MESA_FORMAT_R16G16_SNORM] = NULL;
-      table[MESA_FORMAT_RGB_SNORM16] = NULL;
-      table[MESA_FORMAT_RGBA_SNORM16] = NULL;
-      table[MESA_FORMAT_A_SNORM8] = NULL;
-      table[MESA_FORMAT_L_SNORM8] = NULL;
-      table[MESA_FORMAT_L8A8_SNORM] = NULL;
-      table[MESA_FORMAT_A8L8_SNORM] = NULL;
-      table[MESA_FORMAT_I_SNORM8] = NULL;
-      table[MESA_FORMAT_A_SNORM16] = NULL;
-      table[MESA_FORMAT_L_SNORM16] = NULL;
-      table[MESA_FORMAT_LA_SNORM16] = NULL;
-      table[MESA_FORMAT_I_SNORM16] = NULL;
-
-
-      table[MESA_FORMAT_RGBA_UNORM16] = pack_ubyte_RGBA_16;
-
-      table[MESA_FORMAT_R9G9B9E5_FLOAT] = pack_ubyte_R9G9B9E5_FLOAT;
-      table[MESA_FORMAT_R11G11B10_FLOAT] = pack_ubyte_R11G11B10_FLOAT;
-
-      table[MESA_FORMAT_B4G4R4X4_UNORM] = pack_ubyte_XRGB4444_UNORM;
-      table[MESA_FORMAT_B5G5R5X1_UNORM] = pack_ubyte_XRGB1555_UNORM;
-      table[MESA_FORMAT_R8G8B8X8_SNORM] = NULL;
-      table[MESA_FORMAT_R8G8B8X8_SRGB] = NULL;
-      table[MESA_FORMAT_X8B8G8R8_SRGB] = NULL;
-      table[MESA_FORMAT_RGBX_UINT8] = NULL;
-      table[MESA_FORMAT_RGBX_SINT8] = NULL;
-      table[MESA_FORMAT_B10G10R10X2_UNORM] = pack_ubyte_B10G10R10X2_UNORM;
-      table[MESA_FORMAT_RGBX_UNORM16] = pack_ubyte_RGBX_UNORM16;
-      table[MESA_FORMAT_RGBX_SNORM16] = NULL;
-      table[MESA_FORMAT_RGBX_FLOAT16] = NULL;
-      table[MESA_FORMAT_RGBX_UINT16] = NULL;
-      table[MESA_FORMAT_RGBX_SINT16] = NULL;
-      table[MESA_FORMAT_RGBX_FLOAT32] = NULL;
-      table[MESA_FORMAT_RGBX_UINT32] = NULL;
-      table[MESA_FORMAT_RGBX_SINT32] = NULL;
-
-      table[MESA_FORMAT_R10G10B10A2_UNORM] = pack_ubyte_R10G10B10A2_UNORM;
-
-      table[MESA_FORMAT_B8G8R8X8_SRGB] = NULL;
-      table[MESA_FORMAT_X8R8G8B8_SRGB] = NULL;
-
-      initialized = GL_TRUE;
-   }
-
-   return table[format];
-}
-
-
-
-/**
- * Return a function that can pack a GLfloat rgba[4] color.
- */
-gl_pack_float_rgba_func
-_mesa_get_pack_float_rgba_function(mesa_format format)
-{
-   static gl_pack_float_rgba_func table[MESA_FORMAT_COUNT];
-   static GLboolean initialized = GL_FALSE;
-
-   if (!initialized) {
-      memset(table, 0, sizeof(table));
-
-      table[MESA_FORMAT_NONE] = NULL;
-
-      table[MESA_FORMAT_A8B8G8R8_UNORM] = pack_float_A8B8G8R8_UNORM;
-      table[MESA_FORMAT_R8G8B8A8_UNORM] = pack_float_R8G8B8A8_UNORM;
-      table[MESA_FORMAT_B8G8R8A8_UNORM] = pack_float_B8G8R8A8_UNORM;
-      table[MESA_FORMAT_A8R8G8B8_UNORM] = pack_float_A8R8G8B8_UNORM;
-      table[MESA_FORMAT_X8B8G8R8_UNORM] = pack_float_A8B8G8R8_UNORM; /* reused */
-      table[MESA_FORMAT_R8G8B8X8_UNORM] = pack_float_R8G8B8A8_UNORM; /* reused */
-      table[MESA_FORMAT_B8G8R8X8_UNORM] = pack_float_B8G8R8X8_UNORM;
-      table[MESA_FORMAT_X8R8G8B8_UNORM] = pack_float_X8R8G8B8_UNORM;
-      table[MESA_FORMAT_BGR_UNORM8] = pack_float_BGR_UNORM8;
-      table[MESA_FORMAT_RGB_UNORM8] = pack_float_RGB_UNORM8;
-      table[MESA_FORMAT_B5G6R5_UNORM] = pack_float_B5G6R5_UNORM;
-      table[MESA_FORMAT_R5G6B5_UNORM] = pack_float_R5G6B5_UNORM;
-      table[MESA_FORMAT_B4G4R4A4_UNORM] = pack_float_B4G4R4A4_UNORM;
-      table[MESA_FORMAT_A4R4G4B4_UNORM] = pack_float_A4R4G4B4_UNORM;
-      table[MESA_FORMAT_A1B5G5R5_UNORM] = pack_float_A1B5G5R5_UNORM;
-      table[MESA_FORMAT_B5G5R5A1_UNORM] = pack_float_B5G5R5A1_UNORM;
-      table[MESA_FORMAT_A1R5G5B5_UNORM] = pack_float_A1R5G5B5_UNORM;
-
-      table[MESA_FORMAT_L4A4_UNORM] = pack_float_L4A4_UNORM;
-      table[MESA_FORMAT_L8A8_UNORM] = pack_float_L8A8_UNORM;
-      table[MESA_FORMAT_A8L8_UNORM] = pack_float_A8L8_UNORM;
-      table[MESA_FORMAT_L16A16_UNORM] = pack_float_L16A16_UNORM;
-      table[MESA_FORMAT_A16L16_UNORM] = pack_float_A16L16_UNORM;
-      table[MESA_FORMAT_B2G3R3_UNORM] = pack_float_B2G3R3_UNORM;
-      table[MESA_FORMAT_A_UNORM8] = pack_float_A_UNORM8;
-      table[MESA_FORMAT_A_UNORM16] = pack_float_A_UNORM16;
-      table[MESA_FORMAT_L_UNORM8] = pack_float_L_UNORM8;
-      table[MESA_FORMAT_L_UNORM16] = pack_float_L_UNORM16;
-      table[MESA_FORMAT_I_UNORM8] = pack_float_L_UNORM8; /* reuse pack_float_L_UNORM8 */
-      table[MESA_FORMAT_I_UNORM16] = pack_float_L_UNORM16; /* reuse pack_float_L_UNORM16 */
-      table[MESA_FORMAT_YCBCR] = pack_float_YCBCR;
-      table[MESA_FORMAT_YCBCR_REV] = pack_float_YCBCR_REV;
-      table[MESA_FORMAT_R_UNORM8] = pack_float_R_UNORM8;
-      table[MESA_FORMAT_R8G8_UNORM] = pack_float_R8G8_UNORM;
-      table[MESA_FORMAT_G8R8_UNORM] = pack_float_G8R8_UNORM;
-      table[MESA_FORMAT_R_UNORM16] = pack_float_R_UNORM16;
-      table[MESA_FORMAT_R16G16_UNORM] = pack_float_R16G16_UNORM;
-      table[MESA_FORMAT_G16R16_UNORM] = pack_float_G16R16_UNORM;
-      table[MESA_FORMAT_B10G10R10A2_UNORM] = pack_float_B10G10R10A2_UNORM;
-      table[MESA_FORMAT_R10G10B10A2_UINT] = pack_float_R10G10B10A2_UINT;
-
-      /* should never convert RGBA to these formats */
-      table[MESA_FORMAT_S8_UINT_Z24_UNORM] = NULL;
-      table[MESA_FORMAT_Z24_UNORM_S8_UINT] = NULL;
-      table[MESA_FORMAT_Z_UNORM16] = NULL;
-      table[MESA_FORMAT_Z24_UNORM_X8_UINT] = NULL;
-      table[MESA_FORMAT_X8_UINT_Z24_UNORM] = NULL;
-      table[MESA_FORMAT_Z_UNORM32] = NULL;
-      table[MESA_FORMAT_S_UINT8] = NULL;
-
-      table[MESA_FORMAT_BGR_SRGB8] = pack_float_BGR_SRGB8;
-      table[MESA_FORMAT_A8B8G8R8_SRGB] = pack_float_A8B8G8R8_SRGB;
-      table[MESA_FORMAT_B8G8R8A8_SRGB] = pack_float_B8G8R8A8_SRGB;
-      table[MESA_FORMAT_A8R8G8B8_SRGB] = pack_float_A8R8G8B8_SRGB;
-      table[MESA_FORMAT_R8G8B8A8_SRGB] = pack_float_R8G8B8A8_SRGB;
-      table[MESA_FORMAT_L_SRGB8] = pack_float_L_SRGB8;
-      table[MESA_FORMAT_L8A8_SRGB] = pack_float_L8A8_SRGB;
-      table[MESA_FORMAT_A8L8_SRGB] = pack_float_A8L8_SRGB;
-
-      /* n/a */
-      table[MESA_FORMAT_SRGB_DXT1] = NULL;
-      table[MESA_FORMAT_SRGBA_DXT1] = NULL;
-      table[MESA_FORMAT_SRGBA_DXT3] = NULL;
-      table[MESA_FORMAT_SRGBA_DXT5] = NULL;
-
-      table[MESA_FORMAT_RGB_FXT1] = NULL;
-      table[MESA_FORMAT_RGBA_FXT1] = NULL;
-      table[MESA_FORMAT_RGB_DXT1] = NULL;
-      table[MESA_FORMAT_RGBA_DXT1] = NULL;
-      table[MESA_FORMAT_RGBA_DXT3] = NULL;
-      table[MESA_FORMAT_RGBA_DXT5] = NULL;
-
-      table[MESA_FORMAT_RGBA_FLOAT32] = pack_float_RGBA_FLOAT32;
-      table[MESA_FORMAT_RGBA_FLOAT16] = pack_float_RGBA_FLOAT16;
-      table[MESA_FORMAT_RGB_FLOAT32] = pack_float_RGB_FLOAT32;
-      table[MESA_FORMAT_RGB_FLOAT16] = pack_float_RGB_FLOAT16;
-      table[MESA_FORMAT_A_FLOAT32] = pack_float_A_FLOAT32;
-      table[MESA_FORMAT_A_FLOAT16] = pack_float_A_FLOAT16;
-      table[MESA_FORMAT_L_FLOAT32] = pack_float_L_FLOAT32;
-      table[MESA_FORMAT_L_FLOAT16] = pack_float_L_FLOAT16;
-      table[MESA_FORMAT_LA_FLOAT32] = pack_float_LA_FLOAT32;
-      table[MESA_FORMAT_LA_FLOAT16] = pack_float_LA_FLOAT16;
-
-      table[MESA_FORMAT_I_FLOAT32] = pack_float_L_FLOAT32;
-      table[MESA_FORMAT_I_FLOAT16] = pack_float_L_FLOAT16;
-      table[MESA_FORMAT_R_FLOAT32] = pack_float_L_FLOAT32;
-      table[MESA_FORMAT_R_FLOAT16] = pack_float_L_FLOAT16;
-      table[MESA_FORMAT_RG_FLOAT32] = pack_float_RG_FLOAT32;
-      table[MESA_FORMAT_RG_FLOAT16] = pack_float_RG_FLOAT16;
-
-      /* n/a */
-      table[MESA_FORMAT_RGBA_SINT8] = NULL;
-      table[MESA_FORMAT_RGBA_SINT16] = NULL;
-      table[MESA_FORMAT_RGBA_SINT32] = NULL;
-      table[MESA_FORMAT_RGBA_UINT8] = NULL;
-      table[MESA_FORMAT_RGBA_UINT16] = NULL;
-      table[MESA_FORMAT_RGBA_UINT32] = NULL;
-
-      table[MESA_FORMAT_RGBA_UNORM16] = pack_float_RGBA_16;
-
-      table[MESA_FORMAT_R_SNORM8] = pack_float_R_SNORM8;
-      table[MESA_FORMAT_R8G8_SNORM] = pack_float_R8G8_SNORM;
-      table[MESA_FORMAT_X8B8G8R8_SNORM] = pack_float_X8B8G8R8_SNORM;
-      table[MESA_FORMAT_A8B8G8R8_SNORM] = pack_float_A8B8G8R8_SNORM;
-      table[MESA_FORMAT_R8G8B8A8_SNORM] = pack_float_R8G8B8A8_SNORM;
-      table[MESA_FORMAT_R_SNORM16] = pack_float_R_SNORM16;
-      table[MESA_FORMAT_R16G16_SNORM] = pack_float_R16G16_SNORM;
-      table[MESA_FORMAT_RGB_SNORM16] = pack_float_RGB_SNORM16;
-      table[MESA_FORMAT_RGBA_SNORM16] = pack_float_RGBA_SNORM16;
-      table[MESA_FORMAT_A_SNORM8] = pack_float_A_SNORM8;
-      table[MESA_FORMAT_L_SNORM8] = pack_float_L_SNORM8;
-      table[MESA_FORMAT_L8A8_SNORM] = pack_float_L8A8_SNORM;
-      table[MESA_FORMAT_A8L8_SNORM] = pack_float_A8L8_SNORM;
-      table[MESA_FORMAT_I_SNORM8] = pack_float_L_SNORM8; /* reused */
-      table[MESA_FORMAT_A_SNORM16] = pack_float_A_SNORM16;
-      table[MESA_FORMAT_L_SNORM16] = pack_float_L_SNORM16;
-      table[MESA_FORMAT_LA_SNORM16] = pack_float_LA_SNORM16;
-      table[MESA_FORMAT_I_SNORM16] = pack_float_L_SNORM16; /* reused */
-
-      table[MESA_FORMAT_R9G9B9E5_FLOAT] = pack_float_R9G9B9E5_FLOAT;
-      table[MESA_FORMAT_R11G11B10_FLOAT] = pack_float_R11G11B10_FLOAT;
-
-      table[MESA_FORMAT_B4G4R4X4_UNORM] = pack_float_XRGB4444_UNORM;
-      table[MESA_FORMAT_B5G5R5X1_UNORM] = pack_float_XRGB1555_UNORM;
-      table[MESA_FORMAT_R8G8B8X8_SNORM] = pack_float_XBGR8888_SNORM;
-      table[MESA_FORMAT_R8G8B8X8_SRGB] = pack_float_R8G8B8X8_SRGB;
-      table[MESA_FORMAT_X8B8G8R8_SRGB] = pack_float_X8B8G8R8_SRGB;
-      table[MESA_FORMAT_RGBX_UINT8] = NULL;
-      table[MESA_FORMAT_RGBX_SINT8] = NULL;
-      table[MESA_FORMAT_B10G10R10X2_UNORM] = pack_float_B10G10R10X2_UNORM;
-      table[MESA_FORMAT_RGBX_UNORM16] = pack_float_RGBX_UNORM16;
-      table[MESA_FORMAT_RGBX_SNORM16] = pack_float_RGBX_SNORM16;
-      table[MESA_FORMAT_RGBX_FLOAT16] = pack_float_XBGR16161616_FLOAT;
-      table[MESA_FORMAT_RGBX_UINT16] = NULL;
-      table[MESA_FORMAT_RGBX_SINT16] = NULL;
-      table[MESA_FORMAT_RGBX_FLOAT32] = pack_float_RGBX_FLOAT32;
-      table[MESA_FORMAT_RGBX_UINT32] = NULL;
-      table[MESA_FORMAT_RGBX_SINT32] = NULL;
-
-      table[MESA_FORMAT_R10G10B10A2_UNORM] = pack_float_R10G10B10A2_UNORM;
-
-      table[MESA_FORMAT_G8R8_SNORM] = pack_float_G8R8_SNORM;
-      table[MESA_FORMAT_G16R16_SNORM] = pack_float_G16R16_SNORM;
-
-      table[MESA_FORMAT_B8G8R8X8_SRGB] = pack_float_B8G8R8X8_SRGB;
-      table[MESA_FORMAT_X8R8G8B8_SRGB] = pack_float_X8R8G8B8_SRGB;
-
-      initialized = GL_TRUE;
-   }
-
-   return table[format];
-}
-
-
-
-static pack_float_rgba_row_func
-get_pack_float_rgba_row_function(mesa_format format)
-{
-   static pack_float_rgba_row_func table[MESA_FORMAT_COUNT];
-   static GLboolean initialized = GL_FALSE;
-
-   if (!initialized) {
-      /* We don't need a special row packing function for each format.
-       * There's a generic fallback which uses a per-pixel packing function.
-       */
-      memset(table, 0, sizeof(table));
-
-      table[MESA_FORMAT_A8B8G8R8_UNORM] = pack_row_float_A8B8G8R8_UNORM;
-      table[MESA_FORMAT_R8G8B8A8_UNORM] = pack_row_float_R8G8B8A8_UNORM;
-      table[MESA_FORMAT_B8G8R8A8_UNORM] = pack_row_float_B8G8R8A8_UNORM;
-      table[MESA_FORMAT_A8R8G8B8_UNORM] = pack_row_float_A8R8G8B8_UNORM;
-      table[MESA_FORMAT_X8B8G8R8_UNORM] = pack_row_float_A8B8G8R8_UNORM; /* reused */
-      table[MESA_FORMAT_R8G8B8X8_UNORM] = pack_row_float_R8G8B8A8_UNORM; /* reused */
-      table[MESA_FORMAT_B8G8R8X8_UNORM] = pack_row_float_B8G8R8X8_UNORM;
-      table[MESA_FORMAT_X8R8G8B8_UNORM] = pack_row_float_X8R8G8B8_UNORM;
-      table[MESA_FORMAT_BGR_UNORM8] = pack_row_float_BGR_UNORM8;
-      table[MESA_FORMAT_RGB_UNORM8] = pack_row_float_RGB_UNORM8;
-      table[MESA_FORMAT_B5G6R5_UNORM] = pack_row_float_B5G6R5_UNORM;
-      table[MESA_FORMAT_R5G6B5_UNORM] = pack_row_float_R5G6B5_UNORM;
-
-      initialized = GL_TRUE;
-   }
-
-   return table[format];
-}
-
-
-
-static pack_ubyte_rgba_row_func
-get_pack_ubyte_rgba_row_function(mesa_format format)
-{
-   static pack_ubyte_rgba_row_func table[MESA_FORMAT_COUNT];
-   static GLboolean initialized = GL_FALSE;
-
-   if (!initialized) {
-      /* We don't need a special row packing function for each format.
-       * There's a generic fallback which uses a per-pixel packing function.
-       */
-      memset(table, 0, sizeof(table));
-
-      table[MESA_FORMAT_A8B8G8R8_UNORM] = pack_row_ubyte_A8B8G8R8_UNORM;
-      table[MESA_FORMAT_R8G8B8A8_UNORM] = pack_row_ubyte_R8G8B8A8_UNORM;
-      table[MESA_FORMAT_B8G8R8A8_UNORM] = pack_row_ubyte_B8G8R8A8_UNORM;
-      table[MESA_FORMAT_A8R8G8B8_UNORM] = pack_row_ubyte_A8R8G8B8_UNORM;
-      table[MESA_FORMAT_X8B8G8R8_UNORM] = pack_row_ubyte_A8B8G8R8_UNORM; /* reused */
-      table[MESA_FORMAT_R8G8B8X8_UNORM] = pack_row_ubyte_R8G8B8A8_UNORM; /* reused */
-      table[MESA_FORMAT_B8G8R8X8_UNORM] = pack_row_ubyte_B8G8R8X8_UNORM;
-      table[MESA_FORMAT_X8R8G8B8_UNORM] = pack_row_ubyte_X8R8G8B8_UNORM;
-      table[MESA_FORMAT_BGR_UNORM8] = pack_row_ubyte_BGR_UNORM8;
-      table[MESA_FORMAT_RGB_UNORM8] = pack_row_ubyte_RGB_UNORM8;
-      table[MESA_FORMAT_B5G6R5_UNORM] = pack_row_ubyte_B5G6R5_UNORM;
-      table[MESA_FORMAT_R5G6B5_UNORM] = pack_row_ubyte_R5G6B5_UNORM;
-
-      initialized = GL_TRUE;
-   }
-
-   return table[format];
-}
-
-
-
-/**
- * Pack a row of GLfloat rgba[4] values to the destination.
- */
-void
-_mesa_pack_float_rgba_row(mesa_format format, GLuint n,
-                          const GLfloat src[][4], void *dst)
-{
-   pack_float_rgba_row_func packrow = get_pack_float_rgba_row_function(format);
-   if (packrow) {
-      /* use "fast" function */
-      packrow(n, src, dst);
-   }
-   else {
-      /* slower fallback */
-      gl_pack_float_rgba_func pack = _mesa_get_pack_float_rgba_function(format);
-      GLuint dstStride = _mesa_get_format_bytes(format);
-      GLubyte *dstPtr = (GLubyte *) dst;
-      GLuint i;
-
-      assert(pack);
-      if (!pack)
-         return;
-
-      for (i = 0; i < n; i++) {
-         pack(src[i], dstPtr);
-         dstPtr += dstStride;
-      }
-   }
-}
-
-
-/**
- * Pack a row of GLubyte rgba[4] values to the destination.
- */
-void
-_mesa_pack_ubyte_rgba_row(mesa_format format, GLuint n,
-                          const GLubyte src[][4], void *dst)
-{
-   pack_ubyte_rgba_row_func packrow = get_pack_ubyte_rgba_row_function(format);
-   if (packrow) {
-      /* use "fast" function */
-      packrow(n, src, dst);
-   }
-   else {
-      /* slower fallback */
-      gl_pack_ubyte_rgba_func pack = _mesa_get_pack_ubyte_rgba_function(format);
-      const GLuint stride = _mesa_get_format_bytes(format);
-      GLubyte *d = ((GLubyte *) dst);
-      GLuint i;
-
-      assert(pack);
-      if (!pack)
-         return;
-
-      for (i = 0; i < n; i++) {
-         pack(src[i], d);
-         d += stride;
-      }
-   }
-}
-
-
-/**
- * Pack a 2D image of ubyte RGBA pixels in the given format.
- * \param srcRowStride  source image row stride in bytes
- * \param dstRowStride  destination image row stride in bytes
- */
-void
-_mesa_pack_ubyte_rgba_rect(mesa_format format, GLuint width, GLuint height,
-                           const GLubyte *src, GLint srcRowStride,
-                           void *dst, GLint dstRowStride)
-{
-   pack_ubyte_rgba_row_func packrow = get_pack_ubyte_rgba_row_function(format);
-   GLubyte *dstUB = (GLubyte *) dst;
-   GLuint i;
-
-   if (packrow) {
-      if (srcRowStride == width * 4 * sizeof(GLubyte) &&
-          dstRowStride == _mesa_format_row_stride(format, width)) {
-         /* do whole image at once */
-         packrow(width * height, (const GLubyte (*)[4]) src, dst);
-      }
-      else {
-         /* row by row */
-         for (i = 0; i < height; i++) {
-            packrow(width, (const GLubyte (*)[4]) src, dstUB);
-            src += srcRowStride;
-            dstUB += dstRowStride;
-         }
-      }
-   }
-   else {
-      /* slower fallback */
-      for (i = 0; i < height; i++) {
-         _mesa_pack_ubyte_rgba_row(format, width,
-                                   (const GLubyte (*)[4]) src, dstUB);
-         src += srcRowStride;
-         dstUB += dstRowStride;
-      }
-   }
-}
-
-
-
-/**
- ** Pack float Z pixels
- **/
-
-static void
-pack_float_S8_UINT_Z24_UNORM(const GLfloat *src, void *dst)
-{
-   /* don't disturb the stencil values */
-   GLuint *d = ((GLuint *) dst);
-   const GLdouble scale = (GLdouble) 0xffffff;
-   GLuint s = *d & 0xff;
-   GLuint z = (GLuint) (*src * scale);
-   assert(z <= 0xffffff);
-   *d = (z << 8) | s;
-}
-
-static void
-pack_float_Z24_UNORM_S8_UINT(const GLfloat *src, void *dst)
-{
-   /* don't disturb the stencil values */
-   GLuint *d = ((GLuint *) dst);
-   const GLdouble scale = (GLdouble) 0xffffff;
-   GLuint s = *d & 0xff000000;
-   GLuint z = (GLuint) (*src * scale);
-   assert(z <= 0xffffff);
-   *d = s | z;
-}
-
-static void
-pack_float_Z_UNORM16(const GLfloat *src, void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   const GLfloat scale = (GLfloat) 0xffff;
-   *d = (GLushort) (*src * scale);
-}
-
-static void
-pack_float_Z_UNORM32(const GLfloat *src, void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   const GLdouble scale = (GLdouble) 0xffffffff;
-   *d = (GLuint) (*src * scale);
-}
-
-static void
-pack_float_Z_FLOAT32(const GLfloat *src, void *dst)
-{
-   GLfloat *d = (GLfloat *) dst;
-   *d = *src;
-}
-
-gl_pack_float_z_func
-_mesa_get_pack_float_z_func(mesa_format format)
-{
-   switch (format) {
-   case MESA_FORMAT_S8_UINT_Z24_UNORM:
-   case MESA_FORMAT_X8_UINT_Z24_UNORM:
-      return pack_float_S8_UINT_Z24_UNORM;
-   case MESA_FORMAT_Z24_UNORM_S8_UINT:
-   case MESA_FORMAT_Z24_UNORM_X8_UINT:
-      return pack_float_Z24_UNORM_S8_UINT;
-   case MESA_FORMAT_Z_UNORM16:
-      return pack_float_Z_UNORM16;
-   case MESA_FORMAT_Z_UNORM32:
-      return pack_float_Z_UNORM32;
-   case MESA_FORMAT_Z_FLOAT32:
-   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
-      return pack_float_Z_FLOAT32;
-   default:
-      _mesa_problem(NULL,
-                    "unexpected format in _mesa_get_pack_float_z_func()");
-      return NULL;
-   }
-}
-
-
-
-/**
- ** Pack uint Z pixels.  The incoming src value is always in
- ** the range [0, 2^32-1].
- **/
-
-static void
-pack_uint_S8_UINT_Z24_UNORM(const GLuint *src, void *dst)
-{
-   /* don't disturb the stencil values */
-   GLuint *d = ((GLuint *) dst);
-   GLuint s = *d & 0xff;
-   GLuint z = *src & 0xffffff00;
-   *d = z | s;
-}
-
-static void
-pack_uint_Z24_UNORM_S8_UINT(const GLuint *src, void *dst)
-{
-   /* don't disturb the stencil values */
-   GLuint *d = ((GLuint *) dst);
-   GLuint s = *d & 0xff000000;
-   GLuint z = *src >> 8;
-   *d = s | z;
-}
-
-static void
-pack_uint_Z_UNORM16(const GLuint *src, void *dst)
-{
-   GLushort *d = ((GLushort *) dst);
-   *d = *src >> 16;
-}
-
-static void
-pack_uint_Z_UNORM32(const GLuint *src, void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   *d = *src;
-}
-
-static void
-pack_uint_Z_FLOAT32(const GLuint *src, void *dst)
-{
-   GLuint *d = ((GLuint *) dst);
-   const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
-   *d = (GLuint) (*src * scale);
-   assert(*d >= 0.0f);
-   assert(*d <= 1.0f);
-}
-
-static void
-pack_uint_Z_FLOAT32_X24S8(const GLuint *src, void *dst)
-{
-   GLfloat *d = ((GLfloat *) dst);
-   const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
-   *d = (GLfloat) (*src * scale);
-   assert(*d >= 0.0f);
-   assert(*d <= 1.0f);
-}
-
-gl_pack_uint_z_func
-_mesa_get_pack_uint_z_func(mesa_format format)
-{
-   switch (format) {
-   case MESA_FORMAT_S8_UINT_Z24_UNORM:
-   case MESA_FORMAT_X8_UINT_Z24_UNORM:
-      return pack_uint_S8_UINT_Z24_UNORM;
-   case MESA_FORMAT_Z24_UNORM_S8_UINT:
-   case MESA_FORMAT_Z24_UNORM_X8_UINT:
-      return pack_uint_Z24_UNORM_S8_UINT;
-   case MESA_FORMAT_Z_UNORM16:
-      return pack_uint_Z_UNORM16;
-   case MESA_FORMAT_Z_UNORM32:
-      return pack_uint_Z_UNORM32;
-   case MESA_FORMAT_Z_FLOAT32:
-      return pack_uint_Z_FLOAT32;
-   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
-      return pack_uint_Z_FLOAT32_X24S8;
-   default:
-      _mesa_problem(NULL, "unexpected format in _mesa_get_pack_uint_z_func()");
-      return NULL;
-   }
-}
-
-
-/**
- ** Pack ubyte stencil pixels
- **/
-
-static void
-pack_ubyte_stencil_Z24_S8(const GLubyte *src, void *dst)
-{
-   /* don't disturb the Z values */
-   GLuint *d = ((GLuint *) dst);
-   GLuint s = *src;
-   GLuint z = *d & 0xffffff00;
-   *d = z | s;
-}
-
-static void
-pack_ubyte_stencil_S8_Z24(const GLubyte *src, void *dst)
-{
-   /* don't disturb the Z values */
-   GLuint *d = ((GLuint *) dst);
-   GLuint s = *src << 24;
-   GLuint z = *d & 0xffffff;
-   *d = s | z;
-}
-
-static void
-pack_ubyte_stencil_S8(const GLubyte *src, void *dst)
-{
-   GLubyte *d = (GLubyte *) dst;
-   *d = *src;
-}
-
-static void
-pack_ubyte_stencil_Z32_FLOAT_X24S8(const GLubyte *src, void *dst)
-{
-   GLfloat *d = ((GLfloat *) dst);
-   d[1] = *src;
-}
-
-
-gl_pack_ubyte_stencil_func
-_mesa_get_pack_ubyte_stencil_func(mesa_format format)
-{
-   switch (format) {
-   case MESA_FORMAT_S8_UINT_Z24_UNORM:
-      return pack_ubyte_stencil_Z24_S8;
-   case MESA_FORMAT_Z24_UNORM_S8_UINT:
-      return pack_ubyte_stencil_S8_Z24;
-   case MESA_FORMAT_S_UINT8:
-      return pack_ubyte_stencil_S8;
-   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
-      return pack_ubyte_stencil_Z32_FLOAT_X24S8;
-   default:
-      _mesa_problem(NULL,
-                    "unexpected format in _mesa_pack_ubyte_stencil_func()");
-      return NULL;
-   }
-}
-
-
-
-void
-_mesa_pack_float_z_row(mesa_format format, GLuint n,
-                       const GLfloat *src, void *dst)
-{
-   switch (format) {
-   case MESA_FORMAT_S8_UINT_Z24_UNORM:
-   case MESA_FORMAT_X8_UINT_Z24_UNORM:
-      {
-         /* don't disturb the stencil values */
-         GLuint *d = ((GLuint *) dst);
-         const GLdouble scale = (GLdouble) 0xffffff;
-         GLuint i;
-         for (i = 0; i < n; i++) {
-            GLuint s = d[i] & 0xff;
-            GLuint z = (GLuint) (src[i] * scale);
-            assert(z <= 0xffffff);
-            d[i] = (z << 8) | s;
-         }
-      }
-      break;
-   case MESA_FORMAT_Z24_UNORM_S8_UINT:
-   case MESA_FORMAT_Z24_UNORM_X8_UINT:
-      {
-         /* don't disturb the stencil values */
-         GLuint *d = ((GLuint *) dst);
-         const GLdouble scale = (GLdouble) 0xffffff;
-         GLuint i;
-         for (i = 0; i < n; i++) {
-            GLuint s = d[i] & 0xff000000;
-            GLuint z = (GLuint) (src[i] * scale);
-            assert(z <= 0xffffff);
-            d[i] = s | z;
-         }
-      }
-      break;
-   case MESA_FORMAT_Z_UNORM16:
-      {
-         GLushort *d = ((GLushort *) dst);
-         const GLfloat scale = (GLfloat) 0xffff;
-         GLuint i;
-         for (i = 0; i < n; i++) {
-            d[i] = (GLushort) (src[i] * scale);
-         }
-      }
-      break;
-   case MESA_FORMAT_Z_UNORM32:
-      {
-         GLuint *d = ((GLuint *) dst);
-         const GLdouble scale = (GLdouble) 0xffffffff;
-         GLuint i;
-         for (i = 0; i < n; i++) {
-            d[i] = (GLuint) (src[i] * scale);
-         }
-      }
-      break;
-   case MESA_FORMAT_Z_FLOAT32:
-      memcpy(dst, src, n * sizeof(GLfloat));
-      break;
-   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
-      {
-         struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
-         GLuint i;
-         for (i = 0; i < n; i++) {
-            d[i].z = src[i];
-         }
-      }
-      break;
-   default:
-      _mesa_problem(NULL, "unexpected format in _mesa_pack_float_z_row()");
-   }
-}
-
-
-/**
- * The incoming Z values are always in the range [0, 0xffffffff].
- */
-void
-_mesa_pack_uint_z_row(mesa_format format, GLuint n,
-                      const GLuint *src, void *dst)
-{
-   switch (format) {
-   case MESA_FORMAT_S8_UINT_Z24_UNORM:
-   case MESA_FORMAT_X8_UINT_Z24_UNORM:
-      {
-         /* don't disturb the stencil values */
-         GLuint *d = ((GLuint *) dst);
-         GLuint i;
-         for (i = 0; i < n; i++) {
-            GLuint s = d[i] & 0xff;
-            GLuint z = src[i] & 0xffffff00;
-            d[i] = z | s;
-         }
-      }
-      break;
-   case MESA_FORMAT_Z24_UNORM_S8_UINT:
-   case MESA_FORMAT_Z24_UNORM_X8_UINT:
-      {
-         /* don't disturb the stencil values */
-         GLuint *d = ((GLuint *) dst);
-         GLuint i;
-         for (i = 0; i < n; i++) {
-            GLuint s = d[i] & 0xff000000;
-            GLuint z = src[i] >> 8;
-            d[i] = s | z;
-         }
-      }
-      break;
-   case MESA_FORMAT_Z_UNORM16:
-      {
-         GLushort *d = ((GLushort *) dst);
-         GLuint i;
-         for (i = 0; i < n; i++) {
-            d[i] = src[i] >> 16;
-         }
-      }
-      break;
-   case MESA_FORMAT_Z_UNORM32:
-      memcpy(dst, src, n * sizeof(GLfloat));
-      break;
-   case MESA_FORMAT_Z_FLOAT32:
-      {
-         GLuint *d = ((GLuint *) dst);
-         const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
-         GLuint i;
-         for (i = 0; i < n; i++) {
-            d[i] = (GLuint) (src[i] * scale);
-            assert(d[i] >= 0.0f);
-            assert(d[i] <= 1.0f);
-         }
-      }
-      break;
-   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
-      {
-         struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
-         const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
-         GLuint i;
-         for (i = 0; i < n; i++) {
-            d[i].z = (GLfloat) (src[i] * scale);
-            assert(d[i].z >= 0.0f);
-            assert(d[i].z <= 1.0f);
-         }
-      }
-      break;
-   default:
-      _mesa_problem(NULL, "unexpected format in _mesa_pack_uint_z_row()");
-   }
-}
-
-
-void
-_mesa_pack_ubyte_stencil_row(mesa_format format, GLuint n,
-                             const GLubyte *src, void *dst)
-{
-   switch (format) {
-   case MESA_FORMAT_S8_UINT_Z24_UNORM:
-      {
-         /* don't disturb the Z values */
-         GLuint *d = ((GLuint *) dst);
-         GLuint i;
-         for (i = 0; i < n; i++) {
-            GLuint s = src[i];
-            GLuint z = d[i] & 0xffffff00;
-            d[i] = z | s;
-         }
-      }
-      break;
-   case MESA_FORMAT_Z24_UNORM_S8_UINT:
-      {
-         /* don't disturb the Z values */
-         GLuint *d = ((GLuint *) dst);
-         GLuint i;
-         for (i = 0; i < n; i++) {
-            GLuint s = src[i] << 24;
-            GLuint z = d[i] & 0xffffff;
-            d[i] = s | z;
-         }
-      }
-      break;
-   case MESA_FORMAT_S_UINT8:
-      memcpy(dst, src, n * sizeof(GLubyte));
-      break;
-   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
-      {
-         struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
-         GLuint i;
-         for (i = 0; i < n; i++) {
-            d[i].x24s8 = src[i];
-         }
-      }
-      break;
-   default:
-      _mesa_problem(NULL, "unexpected format in _mesa_pack_ubyte_stencil_row()");
-   }
-}
-
-
-/**
- * Incoming Z/stencil values are always in uint_24_8 format.
- */
-void
-_mesa_pack_uint_24_8_depth_stencil_row(mesa_format format, GLuint n,
-                                       const GLuint *src, void *dst)
-{
-   switch (format) {
-   case MESA_FORMAT_S8_UINT_Z24_UNORM:
-      memcpy(dst, src, n * sizeof(GLuint));
-      break;
-   case MESA_FORMAT_Z24_UNORM_S8_UINT:
-      {
-         GLuint *d = ((GLuint *) dst);
-         GLuint i;
-         for (i = 0; i < n; i++) {
-            GLuint s = src[i] << 24;
-            GLuint z = src[i] >> 8;
-            d[i] = s | z;
-         }
-      }
-      break;
-   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
-      {
-         const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
-         struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
-         GLuint i;
-         for (i = 0; i < n; i++) {
-            GLfloat z = (GLfloat) ((src[i] >> 8) * scale);
-            d[i].z = z;
-            d[i].x24s8 = src[i];
-         }
-      }
-      break;
-   default:
-      _mesa_problem(NULL, "bad format %s in _mesa_pack_ubyte_s_row",
-                    _mesa_get_format_name(format));
-      return;
-   }
-}
-
-
-
-/**
- * Convert a boolean color mask to a packed color where each channel of
- * the packed value at dst will be 0 or ~0 depending on the colorMask.
- */
-void
-_mesa_pack_colormask(mesa_format format, const GLubyte colorMask[4], void *dst)
-{
-   GLfloat maskColor[4];
-
-   switch (_mesa_get_format_datatype(format)) {
-   case GL_UNSIGNED_NORMALIZED:
-      /* simple: 1.0 will convert to ~0 in the right bit positions */
-      maskColor[0] = colorMask[0] ? 1.0f : 0.0f;
-      maskColor[1] = colorMask[1] ? 1.0f : 0.0f;
-      maskColor[2] = colorMask[2] ? 1.0f : 0.0f;
-      maskColor[3] = colorMask[3] ? 1.0f : 0.0f;
-      _mesa_pack_float_rgba_row(format, 1,
-                                (const GLfloat (*)[4]) maskColor, dst);
-      break;
-   case GL_SIGNED_NORMALIZED:
-   case GL_FLOAT:
-      /* These formats are harder because it's hard to know the floating
-       * point values that will convert to ~0 for each color channel's bits.
-       * This solution just generates a non-zero value for each color channel
-       * then fixes up the non-zero values to be ~0.
-       * Note: we'll need to add special case code if we ever have to deal
-       * with formats with unequal color channel sizes, like R11_G11_B10.
-       * We issue a warning below for channel sizes other than 8,16,32.
-       */
-      {
-         GLuint bits = _mesa_get_format_max_bits(format); /* bits per chan */
-         GLuint bytes = _mesa_get_format_bytes(format);
-         GLuint i;
-
-         /* this should put non-zero values into the channels of dst */
-         maskColor[0] = colorMask[0] ? -1.0f : 0.0f;
-         maskColor[1] = colorMask[1] ? -1.0f : 0.0f;
-         maskColor[2] = colorMask[2] ? -1.0f : 0.0f;
-         maskColor[3] = colorMask[3] ? -1.0f : 0.0f;
-         _mesa_pack_float_rgba_row(format, 1,
-                                   (const GLfloat (*)[4]) maskColor, dst);
-
-         /* fix-up the dst channels by converting non-zero values to ~0 */
-         if (bits == 8) {
-            GLubyte *d = (GLubyte *) dst;
-            for (i = 0; i < bytes; i++) {
-               d[i] = d[i] ? 0xff : 0x0;
-            }
-         }
-         else if (bits == 16) {
-            GLushort *d = (GLushort *) dst;
-            for (i = 0; i < bytes / 2; i++) {
-               d[i] = d[i] ? 0xffff : 0x0;
-            }
-         }
-         else if (bits == 32) {
-            GLuint *d = (GLuint *) dst;
-            for (i = 0; i < bytes / 4; i++) {
-               d[i] = d[i] ? 0xffffffffU : 0x0;
-            }
-         }
-         else {
-            _mesa_problem(NULL, "unexpected size in _mesa_pack_colormask()");
-            return;
-         }
-      }
-      break;
-   default:
-      _mesa_problem(NULL, "unexpected format data type in gen_color_mask()");
-      return;
-   }
-}
diff --git a/src/mesa/main/format_pack.py b/src/mesa/main/format_pack.py
new file mode 100644
index 00000000000..69cc59bafef
--- /dev/null
+++ b/src/mesa/main/format_pack.py
@@ -0,0 +1,920 @@
+#!/usr/bin/env python
+
+from mako.template import Template
+from sys import argv
+
+string = """/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (c) 2011 VMware, Inc.
+ * Copyright (c) 2014 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+
+
+/**
+ * Color, depth, stencil packing functions.
+ * Used to pack basic color, depth and stencil formats to specific
+ * hardware formats.
+ *
+ * There are both per-pixel and per-row packing functions:
+ * - The former will be used by swrast to write values to the color, depth,
+ *   stencil buffers when drawing points, lines and masked spans.
+ * - The later will be used for image-oriented functions like glDrawPixels,
+ *   glAccum, and glTexImage.
+ */
+
+#include <stdint.h>
+
+#include "colormac.h"
+#include "format_pack.h"
+#include "format_utils.h"
+#include "macros.h"
+#include "../../gallium/auxiliary/util/u_format_rgb9e5.h"
+#include "../../gallium/auxiliary/util/u_format_r11g11b10f.h"
+#include "util/format_srgb.h"
+
+#define UNPACK(SRC, OFFSET, BITS) (((SRC) >> (OFFSET)) & MAX_UINT(BITS))
+#define PACK(SRC, OFFSET, BITS) (((SRC) & MAX_UINT(BITS)) << (OFFSET))
+
+<%
+import format_parser as parser
+
+formats = parser.parse(argv[1])
+
+rgb_formats = []
+for f in formats:
+   if f.name == 'MESA_FORMAT_NONE':
+      continue
+   if f.colorspace not in ('rgb', 'srgb'):
+      continue
+
+   rgb_formats.append(f)
+%>
+
+/* ubyte packing functions */
+
+%for f in rgb_formats:
+   %if f.name in ('MESA_FORMAT_R9G9B9E5_FLOAT', 'MESA_FORMAT_R11G11B10_FLOAT'):
+      <% continue %>
+   %elif f.is_compressed():
+      <% continue %>
+   %endif
+
+static inline void
+pack_ubyte_${f.short_name()}(const GLubyte src[4], void *dst)
+{
+   %for (i, c) in enumerate(f.channels):
+      <% i = f.swizzle.inverse()[i] %>
+      %if c.type == 'x':
+         <% continue %>
+      %endif
+
+      ${c.datatype()} ${c.name} =
+      %if not f.is_normalized() and f.is_int():
+          %if c.type == parser.SIGNED:
+              _mesa_unsigned_to_signed(src[${i}], ${c.size});
+          %else:
+              _mesa_unsigned_to_unsigned(src[${i}], ${c.size});
+          %endif
+      %elif c.type == parser.UNSIGNED:
+         %if f.colorspace == 'srgb' and c.name in 'rgb':
+            <% assert c.size == 8 %>
+            util_format_linear_to_srgb_8unorm(src[${i}]);
+         %else:
+            _mesa_unorm_to_unorm(src[${i}], 8, ${c.size});
+         %endif
+      %elif c.type == parser.SIGNED:
+         _mesa_unorm_to_snorm(src[${i}], 8, ${c.size});
+      %elif c.type == parser.FLOAT:
+         %if c.size == 32:
+            _mesa_unorm_to_float(src[${i}], 8);
+         %elif c.size == 16:
+            _mesa_unorm_to_half(src[${i}], 8);
+         %else:
+            <% assert False %>
+         %endif
+      %else:
+         <% assert False %>
+      %endif
+   %endfor
+
+   %if f.layout == parser.ARRAY:
+      ${f.datatype()} *d = (${f.datatype()} *)dst;
+      %for (i, c) in enumerate(f.channels):
+         %if c.type == 'x':
+            <% continue %>
+         %endif
+         d[${i}] = ${c.name};
+      %endfor
+   %elif f.layout == parser.PACKED:
+      ${f.datatype()} d = 0;
+      %for (i, c) in enumerate(f.channels):
+         %if c.type == 'x':
+            <% continue %>
+         %endif
+         d |= PACK(${c.name}, ${c.shift}, ${c.size});
+      %endfor
+      (*(${f.datatype()} *)dst) = d;
+   %else:
+      <% assert False %>
+   %endif
+}
+%endfor
+
+static inline void
+pack_ubyte_r9g9b9e5_float(const GLubyte src[4], void *dst)
+{
+   GLuint *d = (GLuint *) dst;
+   GLfloat rgb[3];
+   rgb[0] = _mesa_unorm_to_float(src[RCOMP], 8);
+   rgb[1] = _mesa_unorm_to_float(src[GCOMP], 8);
+   rgb[2] = _mesa_unorm_to_float(src[BCOMP], 8);
+   *d = float3_to_rgb9e5(rgb);
+}
+
+static inline void
+pack_ubyte_r11g11b10_float(const GLubyte src[4], void *dst)
+{
+   GLuint *d = (GLuint *) dst;
+   GLfloat rgb[3];
+   rgb[0] = _mesa_unorm_to_float(src[RCOMP], 8);
+   rgb[1] = _mesa_unorm_to_float(src[GCOMP], 8);
+   rgb[2] = _mesa_unorm_to_float(src[BCOMP], 8);
+   *d = float3_to_r11g11b10f(rgb);
+}
+
+
+/* float packing functions */
+
+%for f in rgb_formats:
+   %if f.name in ('MESA_FORMAT_R9G9B9E5_FLOAT', 'MESA_FORMAT_R11G11B10_FLOAT'):
+      <% continue %>
+   %elif f.is_int() and not f.is_normalized():
+      <% continue %>
+   %elif f.is_compressed():
+      <% continue %>
+   %endif
+
+static inline void
+pack_float_${f.short_name()}(const GLfloat src[4], void *dst)
+{
+   %for (i, c) in enumerate(f.channels):
+      <% i = f.swizzle.inverse()[i] %>
+      %if c.type == 'x':
+         <% continue %>
+      %endif
+
+      ${c.datatype()} ${c.name} =
+      %if c.type == parser.UNSIGNED:
+         %if f.colorspace == 'srgb' and c.name in 'rgb':
+            <% assert c.size == 8 %>
+            util_format_linear_float_to_srgb_8unorm(src[${i}]);
+         %else:
+            _mesa_float_to_unorm(src[${i}], ${c.size});
+         %endif
+      %elif c.type == parser.SIGNED:
+         _mesa_float_to_snorm(src[${i}], ${c.size});
+      %elif c.type == parser.FLOAT:
+         %if c.size == 32:
+            src[${i}];
+         %elif c.size == 16:
+            _mesa_float_to_half(src[${i}]);
+         %else:
+            <% assert False %>
+         %endif
+      %else:
+         <% assert False %>
+      %endif
+   %endfor
+
+   %if f.layout == parser.ARRAY:
+      ${f.datatype()} *d = (${f.datatype()} *)dst;
+      %for (i, c) in enumerate(f.channels):
+         %if c.type == 'x':
+            <% continue %>
+         %endif
+         d[${i}] = ${c.name};
+      %endfor
+   %elif f.layout == parser.PACKED:
+      ${f.datatype()} d = 0;
+      %for (i, c) in enumerate(f.channels):
+         %if c.type == 'x':
+            <% continue %>
+         %endif
+         d |= PACK(${c.name}, ${c.shift}, ${c.size});
+      %endfor
+      (*(${f.datatype()} *)dst) = d;
+   %else:
+      <% assert False %>
+   %endif
+}
+%endfor
+
+static inline void
+pack_float_r9g9b9e5_float(const GLfloat src[4], void *dst)
+{
+   GLuint *d = (GLuint *) dst;
+   *d = float3_to_rgb9e5(src);
+}
+
+static inline void
+pack_float_r11g11b10_float(const GLfloat src[4], void *dst)
+{
+   GLuint *d = (GLuint *) dst;
+   *d = float3_to_r11g11b10f(src);
+}
+
+/**
+ * Return a function that can pack a GLubyte rgba[4] color.
+ */
+gl_pack_ubyte_rgba_func
+_mesa_get_pack_ubyte_rgba_function(mesa_format format)
+{
+   switch (format) {
+%for f in rgb_formats:
+   %if f.is_compressed():
+      <% continue %>
+   %endif
+
+   case ${f.name}:
+      return pack_ubyte_${f.short_name()};
+%endfor
+   default:
+      return NULL;
+   }
+}
+
+/**
+ * Return a function that can pack a GLfloat rgba[4] color.
+ */
+gl_pack_float_rgba_func
+_mesa_get_pack_float_rgba_function(mesa_format format)
+{
+   switch (format) {
+%for f in rgb_formats:
+   %if f.is_compressed():
+      <% continue %>
+   %elif f.is_int() and not f.is_normalized():
+      <% continue %>
+   %endif
+
+   case ${f.name}:
+      return pack_float_${f.short_name()};
+%endfor
+   default:
+      return NULL;
+   }
+}
+
+/**
+ * Pack a row of GLubyte rgba[4] values to the destination.
+ */
+void
+_mesa_pack_ubyte_rgba_row(mesa_format format, GLuint n,
+                          const GLubyte src[][4], void *dst)
+{
+   GLuint i;
+   GLubyte *d = dst;
+
+   switch (format) {
+%for f in rgb_formats:
+   %if f.is_compressed():
+      <% continue %>
+   %endif
+
+   case ${f.name}:
+      for (i = 0; i < n; ++i) {
+         pack_ubyte_${f.short_name()}(src[i], d);
+         d += ${f.block_size() / 8};
+      }
+      break;
+%endfor
+   default:
+      assert(!"Invalid format");
+   }
+}
+
+/**
+ * Pack a row of GLfloat rgba[4] values to the destination.
+ */
+void
+_mesa_pack_float_rgba_row(mesa_format format, GLuint n,
+                          const GLfloat src[][4], void *dst)
+{
+   GLuint i;
+   GLubyte *d = dst;
+
+   switch (format) {
+%for f in rgb_formats:
+   %if f.is_compressed():
+      <% continue %>
+   %elif f.is_int() and not f.is_normalized():
+      <% continue %>
+   %endif
+
+   case ${f.name}:
+      for (i = 0; i < n; ++i) {
+         pack_float_${f.short_name()}(src[i], d);
+         d += ${f.block_size() / 8};
+      }
+      break;
+%endfor
+   default:
+      assert(!"Invalid format");
+   }
+}
+
+/**
+ * Pack a 2D image of ubyte RGBA pixels in the given format.
+ * \param srcRowStride  source image row stride in bytes
+ * \param dstRowStride  destination image row stride in bytes
+ */
+void
+_mesa_pack_ubyte_rgba_rect(mesa_format format, GLuint width, GLuint height,
+                           const GLubyte *src, GLint srcRowStride,
+                           void *dst, GLint dstRowStride)
+{
+   GLubyte *dstUB = dst;
+   GLuint i;
+
+   if (srcRowStride == width * 4 * sizeof(GLubyte) &&
+       dstRowStride == _mesa_format_row_stride(format, width)) {
+      /* do whole image at once */
+      _mesa_pack_ubyte_rgba_row(format, width * height,
+                                (const GLubyte (*)[4]) src, dst);
+   }
+   else {
+      /* row by row */
+      for (i = 0; i < height; i++) {
+         _mesa_pack_ubyte_rgba_row(format, width,
+                                   (const GLubyte (*)[4]) src, dstUB);
+         src += srcRowStride;
+         dstUB += dstRowStride;
+      }
+   }
+}
+
+
+/** Helper struct for MESA_FORMAT_Z32_FLOAT_S8X24_UINT */
+struct z32f_x24s8
+{
+   float z;
+   uint32_t x24s8;
+};
+
+
+/**
+ ** Pack float Z pixels
+ **/
+
+static void
+pack_float_S8_UINT_Z24_UNORM(const GLfloat *src, void *dst)
+{
+   /* don't disturb the stencil values */
+   GLuint *d = ((GLuint *) dst);
+   const GLdouble scale = (GLdouble) 0xffffff;
+   GLuint s = *d & 0xff;
+   GLuint z = (GLuint) (*src * scale);
+   assert(z <= 0xffffff);
+   *d = (z << 8) | s;
+}
+
+static void
+pack_float_Z24_UNORM_S8_UINT(const GLfloat *src, void *dst)
+{
+   /* don't disturb the stencil values */
+   GLuint *d = ((GLuint *) dst);
+   const GLdouble scale = (GLdouble) 0xffffff;
+   GLuint s = *d & 0xff000000;
+   GLuint z = (GLuint) (*src * scale);
+   assert(z <= 0xffffff);
+   *d = s | z;
+}
+
+static void
+pack_float_Z_UNORM16(const GLfloat *src, void *dst)
+{
+   GLushort *d = ((GLushort *) dst);
+   const GLfloat scale = (GLfloat) 0xffff;
+   *d = (GLushort) (*src * scale);
+}
+
+static void
+pack_float_Z_UNORM32(const GLfloat *src, void *dst)
+{
+   GLuint *d = ((GLuint *) dst);
+   const GLdouble scale = (GLdouble) 0xffffffff;
+   *d = (GLuint) (*src * scale);
+}
+
+static void
+pack_float_Z_FLOAT32(const GLfloat *src, void *dst)
+{
+   GLfloat *d = (GLfloat *) dst;
+   *d = *src;
+}
+
+gl_pack_float_z_func
+_mesa_get_pack_float_z_func(mesa_format format)
+{
+   switch (format) {
+   case MESA_FORMAT_S8_UINT_Z24_UNORM:
+   case MESA_FORMAT_X8_UINT_Z24_UNORM:
+      return pack_float_S8_UINT_Z24_UNORM;
+   case MESA_FORMAT_Z24_UNORM_S8_UINT:
+   case MESA_FORMAT_Z24_UNORM_X8_UINT:
+      return pack_float_Z24_UNORM_S8_UINT;
+   case MESA_FORMAT_Z_UNORM16:
+      return pack_float_Z_UNORM16;
+   case MESA_FORMAT_Z_UNORM32:
+      return pack_float_Z_UNORM32;
+   case MESA_FORMAT_Z_FLOAT32:
+   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
+      return pack_float_Z_FLOAT32;
+   default:
+      _mesa_problem(NULL,
+                    "unexpected format in _mesa_get_pack_float_z_func()");
+      return NULL;
+   }
+}
+
+
+
+/**
+ ** Pack uint Z pixels.  The incoming src value is always in
+ ** the range [0, 2^32-1].
+ **/
+
+static void
+pack_uint_S8_UINT_Z24_UNORM(const GLuint *src, void *dst)
+{
+   /* don't disturb the stencil values */
+   GLuint *d = ((GLuint *) dst);
+   GLuint s = *d & 0xff;
+   GLuint z = *src & 0xffffff00;
+   *d = z | s;
+}
+
+static void
+pack_uint_Z24_UNORM_S8_UINT(const GLuint *src, void *dst)
+{
+   /* don't disturb the stencil values */
+   GLuint *d = ((GLuint *) dst);
+   GLuint s = *d & 0xff000000;
+   GLuint z = *src >> 8;
+   *d = s | z;
+}
+
+static void
+pack_uint_Z_UNORM16(const GLuint *src, void *dst)
+{
+   GLushort *d = ((GLushort *) dst);
+   *d = *src >> 16;
+}
+
+static void
+pack_uint_Z_UNORM32(const GLuint *src, void *dst)
+{
+   GLuint *d = ((GLuint *) dst);
+   *d = *src;
+}
+
+static void
+pack_uint_Z_FLOAT32(const GLuint *src, void *dst)
+{
+   GLuint *d = ((GLuint *) dst);
+   const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
+   *d = (GLuint) (*src * scale);
+   assert(*d >= 0.0f);
+   assert(*d <= 1.0f);
+}
+
+static void
+pack_uint_Z_FLOAT32_X24S8(const GLuint *src, void *dst)
+{
+   GLfloat *d = ((GLfloat *) dst);
+   const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
+   *d = (GLfloat) (*src * scale);
+   assert(*d >= 0.0f);
+   assert(*d <= 1.0f);
+}
+
+gl_pack_uint_z_func
+_mesa_get_pack_uint_z_func(mesa_format format)
+{
+   switch (format) {
+   case MESA_FORMAT_S8_UINT_Z24_UNORM:
+   case MESA_FORMAT_X8_UINT_Z24_UNORM:
+      return pack_uint_S8_UINT_Z24_UNORM;
+   case MESA_FORMAT_Z24_UNORM_S8_UINT:
+   case MESA_FORMAT_Z24_UNORM_X8_UINT:
+      return pack_uint_Z24_UNORM_S8_UINT;
+   case MESA_FORMAT_Z_UNORM16:
+      return pack_uint_Z_UNORM16;
+   case MESA_FORMAT_Z_UNORM32:
+      return pack_uint_Z_UNORM32;
+   case MESA_FORMAT_Z_FLOAT32:
+      return pack_uint_Z_FLOAT32;
+   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
+      return pack_uint_Z_FLOAT32_X24S8;
+   default:
+      _mesa_problem(NULL, "unexpected format in _mesa_get_pack_uint_z_func()");
+      return NULL;
+   }
+}
+
+
+/**
+ ** Pack ubyte stencil pixels
+ **/
+
+static void
+pack_ubyte_stencil_Z24_S8(const GLubyte *src, void *dst)
+{
+   /* don't disturb the Z values */
+   GLuint *d = ((GLuint *) dst);
+   GLuint s = *src;
+   GLuint z = *d & 0xffffff00;
+   *d = z | s;
+}
+
+static void
+pack_ubyte_stencil_S8_Z24(const GLubyte *src, void *dst)
+{
+   /* don't disturb the Z values */
+   GLuint *d = ((GLuint *) dst);
+   GLuint s = *src << 24;
+   GLuint z = *d & 0xffffff;
+   *d = s | z;
+}
+
+static void
+pack_ubyte_stencil_S8(const GLubyte *src, void *dst)
+{
+   GLubyte *d = (GLubyte *) dst;
+   *d = *src;
+}
+
+static void
+pack_ubyte_stencil_Z32_FLOAT_X24S8(const GLubyte *src, void *dst)
+{
+   GLfloat *d = ((GLfloat *) dst);
+   d[1] = *src;
+}
+
+
+gl_pack_ubyte_stencil_func
+_mesa_get_pack_ubyte_stencil_func(mesa_format format)
+{
+   switch (format) {
+   case MESA_FORMAT_S8_UINT_Z24_UNORM:
+      return pack_ubyte_stencil_Z24_S8;
+   case MESA_FORMAT_Z24_UNORM_S8_UINT:
+      return pack_ubyte_stencil_S8_Z24;
+   case MESA_FORMAT_S_UINT8:
+      return pack_ubyte_stencil_S8;
+   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
+      return pack_ubyte_stencil_Z32_FLOAT_X24S8;
+   default:
+      _mesa_problem(NULL,
+                    "unexpected format in _mesa_pack_ubyte_stencil_func()");
+      return NULL;
+   }
+}
+
+
+
+void
+_mesa_pack_float_z_row(mesa_format format, GLuint n,
+                       const GLfloat *src, void *dst)
+{
+   switch (format) {
+   case MESA_FORMAT_S8_UINT_Z24_UNORM:
+   case MESA_FORMAT_X8_UINT_Z24_UNORM:
+      {
+         /* don't disturb the stencil values */
+         GLuint *d = ((GLuint *) dst);
+         const GLdouble scale = (GLdouble) 0xffffff;
+         GLuint i;
+         for (i = 0; i < n; i++) {
+            GLuint s = d[i] & 0xff;
+            GLuint z = (GLuint) (src[i] * scale);
+            assert(z <= 0xffffff);
+            d[i] = (z << 8) | s;
+         }
+      }
+      break;
+   case MESA_FORMAT_Z24_UNORM_S8_UINT:
+   case MESA_FORMAT_Z24_UNORM_X8_UINT:
+      {
+         /* don't disturb the stencil values */
+         GLuint *d = ((GLuint *) dst);
+         const GLdouble scale = (GLdouble) 0xffffff;
+         GLuint i;
+         for (i = 0; i < n; i++) {
+            GLuint s = d[i] & 0xff000000;
+            GLuint z = (GLuint) (src[i] * scale);
+            assert(z <= 0xffffff);
+            d[i] = s | z;
+         }
+      }
+      break;
+   case MESA_FORMAT_Z_UNORM16:
+      {
+         GLushort *d = ((GLushort *) dst);
+         const GLfloat scale = (GLfloat) 0xffff;
+         GLuint i;
+         for (i = 0; i < n; i++) {
+            d[i] = (GLushort) (src[i] * scale);
+         }
+      }
+      break;
+   case MESA_FORMAT_Z_UNORM32:
+      {
+         GLuint *d = ((GLuint *) dst);
+         const GLdouble scale = (GLdouble) 0xffffffff;
+         GLuint i;
+         for (i = 0; i < n; i++) {
+            d[i] = (GLuint) (src[i] * scale);
+         }
+      }
+      break;
+   case MESA_FORMAT_Z_FLOAT32:
+      memcpy(dst, src, n * sizeof(GLfloat));
+      break;
+   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
+      {
+         struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
+         GLuint i;
+         for (i = 0; i < n; i++) {
+            d[i].z = src[i];
+         }
+      }
+      break;
+   default:
+      _mesa_problem(NULL, "unexpected format in _mesa_pack_float_z_row()");
+   }
+}
+
+
+/**
+ * The incoming Z values are always in the range [0, 0xffffffff].
+ */
+void
+_mesa_pack_uint_z_row(mesa_format format, GLuint n,
+                      const GLuint *src, void *dst)
+{
+   switch (format) {
+   case MESA_FORMAT_S8_UINT_Z24_UNORM:
+   case MESA_FORMAT_X8_UINT_Z24_UNORM:
+      {
+         /* don't disturb the stencil values */
+         GLuint *d = ((GLuint *) dst);
+         GLuint i;
+         for (i = 0; i < n; i++) {
+            GLuint s = d[i] & 0xff;
+            GLuint z = src[i] & 0xffffff00;
+            d[i] = z | s;
+         }
+      }
+      break;
+   case MESA_FORMAT_Z24_UNORM_S8_UINT:
+   case MESA_FORMAT_Z24_UNORM_X8_UINT:
+      {
+         /* don't disturb the stencil values */
+         GLuint *d = ((GLuint *) dst);
+         GLuint i;
+         for (i = 0; i < n; i++) {
+            GLuint s = d[i] & 0xff000000;
+            GLuint z = src[i] >> 8;
+            d[i] = s | z;
+         }
+      }
+      break;
+   case MESA_FORMAT_Z_UNORM16:
+      {
+         GLushort *d = ((GLushort *) dst);
+         GLuint i;
+         for (i = 0; i < n; i++) {
+            d[i] = src[i] >> 16;
+         }
+      }
+      break;
+   case MESA_FORMAT_Z_UNORM32:
+      memcpy(dst, src, n * sizeof(GLfloat));
+      break;
+   case MESA_FORMAT_Z_FLOAT32:
+      {
+         GLuint *d = ((GLuint *) dst);
+         const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
+         GLuint i;
+         for (i = 0; i < n; i++) {
+            d[i] = (GLuint) (src[i] * scale);
+            assert(d[i] >= 0.0f);
+            assert(d[i] <= 1.0f);
+         }
+      }
+      break;
+   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
+      {
+         struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
+         const GLdouble scale = 1.0 / (GLdouble) 0xffffffff;
+         GLuint i;
+         for (i = 0; i < n; i++) {
+            d[i].z = (GLfloat) (src[i] * scale);
+            assert(d[i].z >= 0.0f);
+            assert(d[i].z <= 1.0f);
+         }
+      }
+      break;
+   default:
+      _mesa_problem(NULL, "unexpected format in _mesa_pack_uint_z_row()");
+   }
+}
+
+
+void
+_mesa_pack_ubyte_stencil_row(mesa_format format, GLuint n,
+                             const GLubyte *src, void *dst)
+{
+   switch (format) {
+   case MESA_FORMAT_S8_UINT_Z24_UNORM:
+      {
+         /* don't disturb the Z values */
+         GLuint *d = ((GLuint *) dst);
+         GLuint i;
+         for (i = 0; i < n; i++) {
+            GLuint s = src[i];
+            GLuint z = d[i] & 0xffffff00;
+            d[i] = z | s;
+         }
+      }
+      break;
+   case MESA_FORMAT_Z24_UNORM_S8_UINT:
+      {
+         /* don't disturb the Z values */
+         GLuint *d = ((GLuint *) dst);
+         GLuint i;
+         for (i = 0; i < n; i++) {
+            GLuint s = src[i] << 24;
+            GLuint z = d[i] & 0xffffff;
+            d[i] = s | z;
+         }
+      }
+      break;
+   case MESA_FORMAT_S_UINT8:
+      memcpy(dst, src, n * sizeof(GLubyte));
+      break;
+   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
+      {
+         struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
+         GLuint i;
+         for (i = 0; i < n; i++) {
+            d[i].x24s8 = src[i];
+         }
+      }
+      break;
+   default:
+      _mesa_problem(NULL, "unexpected format in _mesa_pack_ubyte_stencil_row()");
+   }
+}
+
+
+/**
+ * Incoming Z/stencil values are always in uint_24_8 format.
+ */
+void
+_mesa_pack_uint_24_8_depth_stencil_row(mesa_format format, GLuint n,
+                                       const GLuint *src, void *dst)
+{
+   switch (format) {
+   case MESA_FORMAT_S8_UINT_Z24_UNORM:
+      memcpy(dst, src, n * sizeof(GLuint));
+      break;
+   case MESA_FORMAT_Z24_UNORM_S8_UINT:
+      {
+         GLuint *d = ((GLuint *) dst);
+         GLuint i;
+         for (i = 0; i < n; i++) {
+            GLuint s = src[i] << 24;
+            GLuint z = src[i] >> 8;
+            d[i] = s | z;
+         }
+      }
+      break;
+   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
+      {
+         const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
+         struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
+         GLuint i;
+         for (i = 0; i < n; i++) {
+            GLfloat z = (GLfloat) ((src[i] >> 8) * scale);
+            d[i].z = z;
+            d[i].x24s8 = src[i];
+         }
+      }
+      break;
+   default:
+      _mesa_problem(NULL, "bad format %s in _mesa_pack_ubyte_s_row",
+                    _mesa_get_format_name(format));
+      return;
+   }
+}
+
+
+
+/**
+ * Convert a boolean color mask to a packed color where each channel of
+ * the packed value at dst will be 0 or ~0 depending on the colorMask.
+ */
+void
+_mesa_pack_colormask(mesa_format format, const GLubyte colorMask[4], void *dst)
+{
+   GLfloat maskColor[4];
+
+   switch (_mesa_get_format_datatype(format)) {
+   case GL_UNSIGNED_NORMALIZED:
+      /* simple: 1.0 will convert to ~0 in the right bit positions */
+      maskColor[0] = colorMask[0] ? 1.0f : 0.0f;
+      maskColor[1] = colorMask[1] ? 1.0f : 0.0f;
+      maskColor[2] = colorMask[2] ? 1.0f : 0.0f;
+      maskColor[3] = colorMask[3] ? 1.0f : 0.0f;
+      _mesa_pack_float_rgba_row(format, 1,
+                                (const GLfloat (*)[4]) maskColor, dst);
+      break;
+   case GL_SIGNED_NORMALIZED:
+   case GL_FLOAT:
+      /* These formats are harder because it's hard to know the floating
+       * point values that will convert to ~0 for each color channel's bits.
+       * This solution just generates a non-zero value for each color channel
+       * then fixes up the non-zero values to be ~0.
+       * Note: we'll need to add special case code if we ever have to deal
+       * with formats with unequal color channel sizes, like R11_G11_B10.
+       * We issue a warning below for channel sizes other than 8,16,32.
+       */
+      {
+         GLuint bits = _mesa_get_format_max_bits(format); /* bits per chan */
+         GLuint bytes = _mesa_get_format_bytes(format);
+         GLuint i;
+
+         /* this should put non-zero values into the channels of dst */
+         maskColor[0] = colorMask[0] ? -1.0f : 0.0f;
+         maskColor[1] = colorMask[1] ? -1.0f : 0.0f;
+         maskColor[2] = colorMask[2] ? -1.0f : 0.0f;
+         maskColor[3] = colorMask[3] ? -1.0f : 0.0f;
+         _mesa_pack_float_rgba_row(format, 1,
+                                   (const GLfloat (*)[4]) maskColor, dst);
+
+         /* fix-up the dst channels by converting non-zero values to ~0 */
+         if (bits == 8) {
+            GLubyte *d = (GLubyte *) dst;
+            for (i = 0; i < bytes; i++) {
+               d[i] = d[i] ? 0xff : 0x0;
+            }
+         }
+         else if (bits == 16) {
+            GLushort *d = (GLushort *) dst;
+            for (i = 0; i < bytes / 2; i++) {
+               d[i] = d[i] ? 0xffff : 0x0;
+            }
+         }
+         else if (bits == 32) {
+            GLuint *d = (GLuint *) dst;
+            for (i = 0; i < bytes / 4; i++) {
+               d[i] = d[i] ? 0xffffffffU : 0x0;
+            }
+         }
+         else {
+            _mesa_problem(NULL, "unexpected size in _mesa_pack_colormask()");
+            return;
+         }
+      }
+      break;
+   default:
+      _mesa_problem(NULL, "unexpected format data type in gen_color_mask()");
+      return;
+   }
+}
+"""
+
+template = Template(string);
+
+print template.render(argv = argv[0:])
diff --git a/src/mesa/main/format_parser.py b/src/mesa/main/format_parser.py
index 5e45c74de3e..522bce35682 100755
--- a/src/mesa/main/format_parser.py
+++ b/src/mesa/main/format_parser.py
@@ -102,6 +102,10 @@ class Channel:
       """Returns true if the size of this channel is a power of two."""
       return is_power_of_two(self.size)
 
+   def datatype(self):
+      """Returns the datatype corresponding to a channel type and size"""
+      return _get_datatype(self.type, self.size)
+
 class Swizzle:
    """Describes a swizzle operation.
 
@@ -469,6 +473,49 @@ class Format:
             return channel
       return None
 
+   def datatype(self):
+      """Returns the datatype corresponding to a format's channel type and size"""
+      if self.layout == PACKED:
+         if self.block_size() == 8:
+            return 'uint8_t'
+         if self.block_size() == 16:
+            return 'uint16_t'
+         if self.block_size() == 32:
+            return 'uint32_t'
+         else:
+            assert False
+      else:
+         return _get_datatype(self.channel_type(), self.channel_size())
+
+def _get_datatype(type, size):
+   if type == FLOAT:
+      if size == 32:
+         return 'float'
+      elif size == 16:
+         return 'uint16_t'
+      else:
+         assert False
+   elif type == UNSIGNED:
+      if size <= 8:
+         return 'uint8_t'
+      elif size <= 16:
+         return 'uint16_t'
+      elif size <= 32:
+         return 'uint32_t'
+      else:
+         assert False
+   elif type == SIGNED:
+      if size <= 8:
+         return 'int8_t'
+      elif size <= 16:
+         return 'int16_t'
+      elif size <= 32:
+         return 'int32_t'
+      else:
+         assert False
+   else:
+      assert False
+
 def _parse_channels(fields, layout, colorspace, swizzle):
    channels = []
    for field in fields: