index : mesa.git	gallium_va_encpackedheader01 master
	Unnamed repository; edit this file 'description' to name the repository.

summaryrefslogtreecommitdiffstats

log msg author committer range

path: root/src/mesa/main/debug.c

	Commit message (Collapse)	Author	Age	Files	Lines
*	mesa: add support for GL_OES_EGL_image_external	Chia-I Wu	2011-11-03	1	-1/+2
| | | | | | | | |	This is an OpenGL ES specific extension. External textures are textures that may be sampled from, but not be updated (no glTexSubImage* and etc.). The image data are taken from an EGLImage. Reviewed-by: Brian Paul <[email protected]> Acked-by: Jakob Bornecrantz <[email protected]>
*	mesa: simplify parameters to GetTexImage() driver hook	Brian Paul	2011-09-30	1	-3/+1
| | | | | | |	The target, level and texObj can be obtained through the texImage parameter. We could make similar changes for the TexImage() hooks too. Reviewed-by: Eric Anholt <[email protected]>
*	mesa: remove CHAN_TYPE cruft from debug.c	Brian Paul	2011-09-20	1	-4/+0
|
*	mesa: Remove all mention of MESA_FORMAT_CI8	Ian Romanick	2011-08-29	1	-1/+0
| | | | | | | | | | |	Nothing in Mesa supports color-index textures, and most of the other infrastructure that could allow such support has already been removed. This puts the final nail in the coffin. Also clean out some GL_COLOR_INDEX comments in formats.c. Reviewed-by: Brian Paul <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
*	mesa: Convert texture debug dump function to using MapTextureImage().	Brian Paul	2011-08-29	1	-43/+51
| | | |	Reviewed-by: Brian Paul <[email protected]>
*	mesa: Remove use of fpu_control.h	Chad Versace	2011-08-16	1	-11/+0
| | | | | | | | | | |	Remove the inclusion of fpu_control.h from compiler.h. Since Bionic lacks fpu_control.h, this fixes the Android build. Also remove the sole use of the fpu_control bits, which was in debug.c. Those were brianp's debug bits, and he approved of their removal. Reviewed-by: Eric Anholt <[email protected]> Signed-off-by: Chad Versace <[email protected]>
*	mesa: Recognize MESA_VERBOSE=all as shortcut for all debug options.	José Fonseca	2011-04-06	1	-1/+1
|
*	mesa: added _mesa_dump_image() for debugging	Brian Paul	2011-03-24	1	-0/+24
|
*	mesa: remove the MESA_NO_DITHER env var	Brian Paul	2011-02-17	1	-10/+0
| | | |	This was sometimes useful back when 16-bit framebuffers were prominent.
*	mesa: make _mesa_write_renderbuffer_image() non-static	Brian Paul	2011-02-16	1	-3/+11
|
*	mesa: get rid of _NEW_ACCUM, clean-up _NEW_* #defines	Brian Paul	2011-01-23	1	-2/+1
| | | | | |	The _NEW_ACCUM flag was only set when changing the accumulation buffer clear color and never used anywhere. Reclaim that dirty bit. Clean up the definitions of the other dirty bit flags.
*	mesa: clean-up _mesa_lookup_prim_by_nr()	Brian Paul	2011-01-20	1	-20/+0
| | | |	Remove the redundant public _mesa_prim_name[] array.
*	mesa: Fix printf format warnings.	Vinson Lee	2010-11-10	1	-1/+1
|
*	mesa: remove unneeded DD_POINT_SIZE and DD_LINE_WIDTH tricaps	Roland Scheidegger	2010-11-10	1	-2/+0
| | | | | | | |	DD_POINT_SIZE was broken for quite some time, and the only driver (r200) relying on this no longer needs it. Both DD_POINT_SIZE and DD_LINE_WIDTH have no users left outside of debugging output, hence instead of fixing DD_POINT_SIZE setting just drop both of them - there was a plan to remove tricaps flags entirely at some point.
*	Drop GLcontext typedef and use struct gl_context instead	Kristian Høgsberg	2010-10-13	1	-2/+2
|
*	mesa: Remove SGI_color_matrix.	Eric Anholt	2010-09-23	1	-2/+1
| | | |	Another optional ARB_imaging subset extension.
*	Revert "glapi: Implement optional dispatch logging"	Kristian Høgsberg	2010-09-09	1	-5/+1
| | | | | |	This reverts commit b9abc6139a310677a37754ea7172d976dbf56979 and the follow on fixes (7aae704 and 6fe1b47). It's changing the glapi/driver ABI and causes a number of problems for debug/non-debug builds.
*	glapi: Implement optional dispatch logging	Kristian Høgsberg	2010-09-09	1	-1/+5
| | | | | | |	There's a useful feature buried in glapi to log all API calls to stderr. Unfortunately it requires editing the code and then it's enabled unconditionally for that build. This patch builds in API logging for debug builds and makes it run-time switchable by setting MESA_DEBUG=dispatch.
*	mesa: s/sprintf/_mesa_snprintf/	Vinson Lee	2010-05-02	1	-2/+2
|
*	mesa: Also print _NEW_STENCIL in _mesa_print_state()	Kristian Høgsberg	2010-03-23	1	-1/+2
|
*	mesa: casts to silence new warnings from printf()	Brian Paul	2010-02-19	1	-2/+2
|
*	Replace the _mesa_*printf() wrappers with the plain libc versions	Kristian Høgsberg	2010-02-19	1	-28/+28
|
*	Replace _mesa_malloc, _mesa_calloc and _mesa_free with plain libc versions	Kristian Høgsberg	2010-02-19	1	-14/+14
|
*	Remove _mesa_strstr in favor of plain strstr.	Kenneth Graunke	2010-02-19	1	-3/+3
|
*	mesa: Fix typo of 'unknown' in debug.c.	Vinson Lee	2010-01-18	1	-1/+1
|
*	mesa: Remove unnecessary headers from debug.c.	Vinson Lee	2010-01-18	1	-2/+0
|
*	mesa: move, clean-up _mesa_print_texture()	Brian Paul	2009-10-29	1	-0/+61
|
*	Merge branch 'texformat-rework'	Brian Paul	2009-10-28	1	-3/+4
|\ | | | | | | | | | | | | | | | | | | | | | |	Conflicts: src/mesa/drivers/dri/radeon/radeon_fbo.c src/mesa/drivers/dri/s3v/s3v_tex.c src/mesa/drivers/dri/s3v/s3v_xmesa.c src/mesa/drivers/dri/trident/trident_context.c src/mesa/main/debug.c src/mesa/main/mipmap.c src/mesa/main/texformat.c src/mesa/main/texgetimage.c
| *	mesa: don't include texformat.h	Brian Paul	2009-10-05	1	-1/+0
| |
| *	mesa: replace gl_texture_format with gl_format	Brian Paul	2009-09-30	1	-1/+1
| | | | | | | | | | | |	Now gl_texture_image::TexFormat is a simple MESA_FORMAT_x enum. ctx->Driver.ChooseTexture format also returns a MESA_FORMAT_x. gl_texture_format will go away next.
* |	mesa: more texture debug code changes, improvements	Brian Paul	2009-10-27	1	-27/+66
| |
* |	mesa: added _mesa_dump_texture()	Brian Paul	2009-10-22	1	-3/+25
| |
* |	mesa: added _mesa_dump_renderbuffers() debug code	Brian Paul	2009-10-21	1	-2/+74
| |
* |	mesa: added VERBOSE_SWAPBUFFERS	Brian Paul	2009-10-14	1	-1/+2
| |
* |	mesa: added MESA_VERBOSE option 'draw' to debug glDrawArrays/Elements, etc.	Brian Paul	2009-10-14	1	-1/+2
| |
* |	mesa: rename VERBOSE_IMMEDIATE->VERBOSE_MATERIAL to reflect what it does	Brian Paul	2009-10-14	1	-1/+1
|/
*	mesa: better texture dump/debug code	Brian Paul	2009-08-04	1	-52/+45
|
*	Merge branch 'mesa_7_5_branch'	Jakob Bornecrantz	2009-06-09	1	-1/+1
|\ | | | | | | | | | | | | | | | |	Conflicts: Makefile src/mesa/main/version.h src/mesa/shader/slang/slang_preprocess.c src/mesa/state_tracker/st_cb_bufferobjects.c
| *	mesa: Use matching signedness for the counter as upper bound.	José Fonseca	2009-06-08	1	-1/+1
| |
* |	mesa: call _mesa_ funcs, not gl funcs for debugging	Brian Paul	2009-06-04	1	-15/+18
| |
* |	mesa: added debug functions for dumping color/depth/stencil buffers	Brian Paul	2009-05-21	1	-0/+101
|/
*	mesa: fix _mesa_dump_textures(), add null ptr check	Brian Paul	2009-04-22	1	-2/+3
| | | |	Calling _mesa_dump_textures() deleted the textures... oops!!!
*	mesa: more tex image debug/dumping code	Brian Paul	2009-03-02	1	-0/+22
|
*	mesa: Move statements after declarations.	José Fonseca	2009-02-11	1	-1/+1
|
*	mesa: debug code for printing info about textures, writing teximages to disk	Brian Paul	2009-02-07	1	-0/+99
|
*	glsl: new MESA_GLSL env var for GLSL debugging features	Brian Paul	2009-02-06	1	-3/+1
| | | | | |	Replaces the VERBOSE_GLSL, VERBOSE_GLSL_DUMP flags which only worked in debug builds. MESA_GLSL will work both in debug and non-debug builds. Also add facility to dump glUniform() calls to stdout.
*	Revert "mesa: meaningless whitespace change to see if git's working (ignore)"	Brian Paul	2009-02-06	1	-1/+3
| | | | | |	This reverts commit b2e779988eeb595187933fe2122d86f8ccfe059c. I didn't mean to push this stuff yet. I'm having a bad git day...
*	mesa: meaningless whitespace change to see if git's working (ignore)	Brian Paul	2009-02-06	1	-3/+1
|
*	mesa: additional debug flags for glsl debug/disassembly	Brian Paul	2008-11-01	1	-29/+25
|
*	Move code to enable FP exceptions into debug.c (set MESA_DEBUG=fpexceptions).	Brian Paul	2005-11-10	1	-1/+13
| | | |	Get rid of MESA_DEBUG preprocessor symbol, just use DEBUG instead.

• [next]

generated by cgit v1.2.3 (git 2.39.1) at 2024-12-19 06:40:49 +0000

/*
 * 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.
 */


#include "colormac.h"
#include "format_unpack.h"
#include "macros.h"
#include "../../gallium/auxiliary/util/u_format_rgb9e5.h"
#include "../../gallium/auxiliary/util/u_format_r11g11b10f.h"


/** Helper struct for MESA_FORMAT_Z32_FLOAT_S8X24_UINT */
struct z32f_x24s8
{
   float z;
   uint32_t x24s8;
};


/* Expand 1, 2, 3, 4, 5, 6-bit values to fill 8 bits */

#define EXPAND_1_8(X)  ( (X) ? 0xff : 0x0 )

#define EXPAND_2_8(X)  ( ((X) << 6) | ((X) << 4) | ((X) << 2) | (X) )

#define EXPAND_3_8(X)  ( ((X) << 5) | ((X) << 2) | ((X) >> 1) )

#define EXPAND_4_8(X)  ( ((X) << 4) | (X) )

#define EXPAND_5_8(X)  ( ((X) << 3) | ((X) >> 2) )

#define EXPAND_6_8(X)  ( ((X) << 2) | ((X) >> 4) )


/**
 * Convert an 8-bit sRGB value from non-linear space to a
 * linear RGB value in [0, 1].
 * Implemented with a 256-entry lookup table.
 */
GLfloat
_mesa_nonlinear_to_linear(GLubyte cs8)
{
   static GLfloat table[256];
   static GLboolean tableReady = GL_FALSE;
   if (!tableReady) {
      /* compute lookup table now */
      GLuint i;
      for (i = 0; i < 256; i++) {
         const GLfloat cs = UBYTE_TO_FLOAT(i);
         if (cs <= 0.04045) {
            table[i] = cs / 12.92f;
         }
         else {
            table[i] = (GLfloat) pow((cs + 0.055) / 1.055, 2.4);
         }
      }
      tableReady = GL_TRUE;
   }
   return table[cs8];
}


/**********************************************************************/
/*  Unpack, returning GLfloat colors                                  */
/**********************************************************************/

typedef void (*unpack_rgba_func)(const void *src, GLfloat dst[][4], GLuint n);


static void
unpack_A8B8G8R8_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = UBYTE_TO_FLOAT( (s[i] >> 24)        );
      dst[i][GCOMP] = UBYTE_TO_FLOAT( (s[i] >> 16) & 0xff );
      dst[i][BCOMP] = UBYTE_TO_FLOAT( (s[i] >>  8) & 0xff );
      dst[i][ACOMP] = UBYTE_TO_FLOAT( (s[i]      ) & 0xff );
   }
}

static void
unpack_R8G8B8A8_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = UBYTE_TO_FLOAT( (s[i]      ) & 0xff );
      dst[i][GCOMP] = UBYTE_TO_FLOAT( (s[i] >>  8) & 0xff );
      dst[i][BCOMP] = UBYTE_TO_FLOAT( (s[i] >> 16) & 0xff );
      dst[i][ACOMP] = UBYTE_TO_FLOAT( (s[i] >> 24)        );
   }
}

static void
unpack_B8G8R8A8_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = UBYTE_TO_FLOAT( (s[i] >> 16) & 0xff );
      dst[i][GCOMP] = UBYTE_TO_FLOAT( (s[i] >>  8) & 0xff );
      dst[i][BCOMP] = UBYTE_TO_FLOAT( (s[i]      ) & 0xff );
      dst[i][ACOMP] = UBYTE_TO_FLOAT( (s[i] >> 24)        );
   }
}

static void
unpack_A8R8G8B8_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = UBYTE_TO_FLOAT( (s[i] >>  8) & 0xff );
      dst[i][GCOMP] = UBYTE_TO_FLOAT( (s[i] >> 16) & 0xff );
      dst[i][BCOMP] = UBYTE_TO_FLOAT( (s[i] >> 24)        );
      dst[i][ACOMP] = UBYTE_TO_FLOAT( (s[i]      ) & 0xff );
   }
}

static void
unpack_RGBX8888(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = UBYTE_TO_FLOAT( (s[i] >> 24)        );
      dst[i][GCOMP] = UBYTE_TO_FLOAT( (s[i] >> 16) & 0xff );
      dst[i][BCOMP] = UBYTE_TO_FLOAT( (s[i] >>  8) & 0xff );
      dst[i][ACOMP] = 1.0f;
   }
}

static void
unpack_RGBX8888_REV(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = UBYTE_TO_FLOAT( (s[i]      ) & 0xff );
      dst[i][GCOMP] = UBYTE_TO_FLOAT( (s[i] >>  8) & 0xff );
      dst[i][BCOMP] = UBYTE_TO_FLOAT( (s[i] >> 16) & 0xff );
      dst[i][ACOMP] = 1.0f;
   }
}

static void
unpack_B8G8R8X8_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = UBYTE_TO_FLOAT( (s[i] >> 16) & 0xff );
      dst[i][GCOMP] = UBYTE_TO_FLOAT( (s[i] >>  8) & 0xff );
      dst[i][BCOMP] = UBYTE_TO_FLOAT( (s[i]      ) & 0xff );
      dst[i][ACOMP] = 1.0f;
   }
}

static void
unpack_X8R8G8B8_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = UBYTE_TO_FLOAT( (s[i] >>  8) & 0xff );
      dst[i][GCOMP] = UBYTE_TO_FLOAT( (s[i] >> 16) & 0xff );
      dst[i][BCOMP] = UBYTE_TO_FLOAT( (s[i] >> 24)        );
      dst[i][ACOMP] = 1.0f;
   }
}

static void
unpack_BGR_UNORM8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = (const GLubyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = UBYTE_TO_FLOAT( s[i*3+2] );
      dst[i][GCOMP] = UBYTE_TO_FLOAT( s[i*3+1] );
      dst[i][BCOMP] = UBYTE_TO_FLOAT( s[i*3+0] );
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_RGB_UNORM8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = (const GLubyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = UBYTE_TO_FLOAT( s[i*3+0] );
      dst[i][GCOMP] = UBYTE_TO_FLOAT( s[i*3+1] );
      dst[i][BCOMP] = UBYTE_TO_FLOAT( s[i*3+2] );
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_B5G6R5_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = ((s[i] >> 11) & 0x1f) * (1.0F / 31.0F);
      dst[i][GCOMP] = ((s[i] >> 5 ) & 0x3f) * (1.0F / 63.0F);
      dst[i][BCOMP] = ((s[i]      ) & 0x1f) * (1.0F / 31.0F);
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_R5G6B5_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   /* Warning: this function does not match the current Mesa definition
    * of MESA_FORMAT_R5G6B5_UNORM.
    */
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      GLuint t = (s[i] >> 8) | (s[i] << 8); /* byte swap */
      dst[i][RCOMP] = UBYTE_TO_FLOAT( ((t >> 8) & 0xf8) | ((t >> 13) & 0x7) );
      dst[i][GCOMP] = UBYTE_TO_FLOAT( ((t >> 3) & 0xfc) | ((t >>  9) & 0x3) );
      dst[i][BCOMP] = UBYTE_TO_FLOAT( ((t << 3) & 0xf8) | ((t >>  2) & 0x7) );
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_B4G4R4A4_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = ((s[i] >>  8) & 0xf) * (1.0F / 15.0F);
      dst[i][GCOMP] = ((s[i] >>  4) & 0xf) * (1.0F / 15.0F);
      dst[i][BCOMP] = ((s[i]      ) & 0xf) * (1.0F / 15.0F);
      dst[i][ACOMP] = ((s[i] >> 12) & 0xf) * (1.0F / 15.0F);
   }
}

static void
unpack_A4R4G4B4_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = ((s[i] >>  4) & 0xf) * (1.0F / 15.0F);
      dst[i][GCOMP] = ((s[i] >>  8) & 0xf) * (1.0F / 15.0F);
      dst[i][BCOMP] = ((s[i] >> 12) & 0xf) * (1.0F / 15.0F);
      dst[i][ACOMP] = ((s[i]      ) & 0xf) * (1.0F / 15.0F);
   }
}

static void
unpack_A1B5G5R5_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = ((s[i] >> 11) & 0x1f) * (1.0F / 31.0F);
      dst[i][GCOMP] = ((s[i] >>  6) & 0x1f) * (1.0F / 31.0F);
      dst[i][BCOMP] = ((s[i] >>  1) & 0x1f) * (1.0F / 31.0F);
      dst[i][ACOMP] = ((s[i]      ) & 0x01) * 1.0F;
   }
}

static void
unpack_B5G5R5A1_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = ((s[i] >> 10) & 0x1f) * (1.0F / 31.0F);
      dst[i][GCOMP] = ((s[i] >>  5) & 0x1f) * (1.0F / 31.0F);
      dst[i][BCOMP] = ((s[i] >>  0) & 0x1f) * (1.0F / 31.0F);
      dst[i][ACOMP] = ((s[i] >> 15) & 0x01) * 1.0F;
   }
}

static void
unpack_A1R5G5B5_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   /* Warning: this function does not match the current Mesa definition
    * of MESA_FORMAT_A1R5G5B5_UNORM.
    */
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      GLushort tmp = (s[i] << 8) | (s[i] >> 8); /* byteswap */
      dst[i][RCOMP] = ((tmp >> 10) & 0x1f) * (1.0F / 31.0F);
      dst[i][GCOMP] = ((tmp >>  5) & 0x1f) * (1.0F / 31.0F);
      dst[i][BCOMP] = ((tmp >>  0) & 0x1f) * (1.0F / 31.0F);
      dst[i][ACOMP] = ((tmp >> 15) & 0x01) * 1.0F;
   }
}

static void
unpack_L4A4_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = ((const GLubyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = (s[i] & 0xf) * (1.0F / 15.0F);
      dst[i][ACOMP] = ((s[i] >> 4) & 0xf) * (1.0F / 15.0F);
   }
}

static void
unpack_L8A8_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = 
      dst[i][GCOMP] = 
      dst[i][BCOMP] = UBYTE_TO_FLOAT( s[i] & 0xff );
      dst[i][ACOMP] = UBYTE_TO_FLOAT( s[i] >> 8 );
   }
}

static void
unpack_A8L8_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = 
      dst[i][GCOMP] = 
      dst[i][BCOMP] = UBYTE_TO_FLOAT( s[i] >> 8 );
      dst[i][ACOMP] = UBYTE_TO_FLOAT( s[i] & 0xff );
   }
}

static void
unpack_L16A16_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = USHORT_TO_FLOAT( s[i] & 0xffff );
      dst[i][ACOMP] = USHORT_TO_FLOAT( s[i] >> 16 );
   }
}

static void
unpack_A16L16_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = USHORT_TO_FLOAT( s[i] >> 16 );
      dst[i][ACOMP] = USHORT_TO_FLOAT( s[i] & 0xffff );
   }
}

static void
unpack_B2G3R3_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = ((const GLubyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = ((s[i] >> 5) & 0x7) * (1.0F / 7.0F);
      dst[i][GCOMP] = ((s[i] >> 2) & 0x7) * (1.0F / 7.0F);
      dst[i][BCOMP] = ((s[i]     ) & 0x3) * (1.0F / 3.0F);
      dst[i][ACOMP] = 1.0F;
   }
}


static void
unpack_A_UNORM8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = ((const GLubyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = UBYTE_TO_FLOAT(s[i]);
   }
}

static void
unpack_A_UNORM16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = USHORT_TO_FLOAT(s[i]);
   }
}

static void
unpack_L_UNORM8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = ((const GLubyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = UBYTE_TO_FLOAT(s[i]);
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_L_UNORM16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = USHORT_TO_FLOAT(s[i]);
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_I_UNORM8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = ((const GLubyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] =
      dst[i][ACOMP] = UBYTE_TO_FLOAT(s[i]);
   }
}

static void
unpack_I_UNORM16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] =
      dst[i][ACOMP] = USHORT_TO_FLOAT(s[i]);
   }
}

static void
unpack_YCBCR(const void *src, GLfloat dst[][4], GLuint n)
{
   GLuint i;
   for (i = 0; i < n; i++) {
      const GLushort *src0 = ((const GLushort *) src) + i * 2; /* even */
      const GLushort *src1 = src0 + 1;         /* odd */
      const GLubyte y0 = (*src0 >> 8) & 0xff;  /* luminance */
      const GLubyte cb = *src0 & 0xff;         /* chroma U */
      const GLubyte y1 = (*src1 >> 8) & 0xff;  /* luminance */
      const GLubyte cr = *src1 & 0xff;         /* chroma V */
      const GLubyte y = (i & 1) ? y1 : y0;     /* choose even/odd luminance */
      GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);
      GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
      GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);
      r *= (1.0F / 255.0F);
      g *= (1.0F / 255.0F);
      b *= (1.0F / 255.0F);
      dst[i][RCOMP] = CLAMP(r, 0.0F, 1.0F);
      dst[i][GCOMP] = CLAMP(g, 0.0F, 1.0F);
      dst[i][BCOMP] = CLAMP(b, 0.0F, 1.0F);
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_YCBCR_REV(const void *src, GLfloat dst[][4], GLuint n)
{
   GLuint i;
   for (i = 0; i < n; i++) {
      const GLushort *src0 = ((const GLushort *) src) + i * 2; /* even */
      const GLushort *src1 = src0 + 1;         /* odd */
      const GLubyte y0 = *src0 & 0xff;         /* luminance */
      const GLubyte cr = (*src0 >> 8) & 0xff;  /* chroma V */
      const GLubyte y1 = *src1 & 0xff;         /* luminance */
      const GLubyte cb = (*src1 >> 8) & 0xff;  /* chroma U */
      const GLubyte y = (i & 1) ? y1 : y0;     /* choose even/odd luminance */
      GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);
      GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
      GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);
      r *= (1.0F / 255.0F);
      g *= (1.0F / 255.0F);
      b *= (1.0F / 255.0F);
      dst[i][RCOMP] = CLAMP(r, 0.0F, 1.0F);
      dst[i][GCOMP] = CLAMP(g, 0.0F, 1.0F);
      dst[i][BCOMP] = CLAMP(b, 0.0F, 1.0F);
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_R_UNORM8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = ((const GLubyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][0] = UBYTE_TO_FLOAT(s[i]);
      dst[i][1] =
      dst[i][2] = 0.0F;
      dst[i][3] = 1.0F;
   }
}

static void
unpack_R8G8_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = UBYTE_TO_FLOAT( s[i] & 0xff );
      dst[i][GCOMP] = UBYTE_TO_FLOAT( s[i] >> 8 );
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_G8R8_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = UBYTE_TO_FLOAT( s[i] >> 8 );
      dst[i][GCOMP] = UBYTE_TO_FLOAT( s[i] & 0xff );
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_R_UNORM16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = USHORT_TO_FLOAT(s[i]);
      dst[i][GCOMP] = 0.0;
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_R16G16_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = USHORT_TO_FLOAT( s[i] & 0xffff );
      dst[i][GCOMP] = USHORT_TO_FLOAT( s[i] >> 16 );
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_G16R16_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = USHORT_TO_FLOAT( s[i] >> 16 );
      dst[i][GCOMP] = USHORT_TO_FLOAT( s[i] & 0xffff );
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_B10G10R10A2_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = ((s[i] >> 20) & 0x3ff) * (1.0F / 1023.0F);
      dst[i][GCOMP] = ((s[i] >> 10) & 0x3ff) * (1.0F / 1023.0F);
      dst[i][BCOMP] = ((s[i] >>  0) & 0x3ff) * (1.0F / 1023.0F);
      dst[i][ACOMP] = ((s[i] >> 30) &  0x03) * (1.0F / 3.0F);
   }
}


static void
unpack_B10G10R10A2_UINT(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = (const GLuint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat)((s[i] >> 20) & 0x3ff);
      dst[i][GCOMP] = (GLfloat)((s[i] >> 10) & 0x3ff);
      dst[i][BCOMP] = (GLfloat)((s[i] >>  0) & 0x3ff);
      dst[i][ACOMP] = (GLfloat)((s[i] >> 30) &  0x03);
   }
}


static void
unpack_R10G10B10A2_UINT(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat)((s[i] >>  0) & 0x3ff);
      dst[i][GCOMP] = (GLfloat)((s[i] >> 10) & 0x3ff);
      dst[i][BCOMP] = (GLfloat)((s[i] >> 20) & 0x3ff);
      dst[i][ACOMP] = (GLfloat)((s[i] >> 30) &  0x03);
   }
}


static void
unpack_S8_UINT_Z24_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   /* only return Z, not stencil data */
   const GLuint *s = ((const GLuint *) src);
   const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][0] =
      dst[i][1] =
      dst[i][2] = (GLfloat) ((s[i] >> 8) * scale);
      dst[i][3] = 1.0F;
      ASSERT(dst[i][0] >= 0.0F);
      ASSERT(dst[i][0] <= 1.0F);
   }
}

static void
unpack_Z24_UNORM_S8_UINT(const void *src, GLfloat dst[][4], GLuint n)
{
   /* only return Z, not stencil data */
   const GLuint *s = ((const GLuint *) src);
   const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][0] =
      dst[i][1] =
      dst[i][2] = (float) ((s[i] & 0x00ffffff) * scale);
      dst[i][3] = 1.0F;
      ASSERT(dst[i][0] >= 0.0F);
      ASSERT(dst[i][0] <= 1.0F);
   }
}

static void
unpack_Z_UNORM16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][0] =
      dst[i][1] =
      dst[i][2] = s[i] * (1.0F / 65535.0F);
      dst[i][3] = 1.0F;
   }
}

static void
unpack_Z24_UNORM_X8_UINT(const void *src, GLfloat dst[][4], GLuint n)
{
   unpack_Z24_UNORM_S8_UINT(src, dst, n);
}

static void
unpack_X8_UINT_Z24_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   unpack_S8_UINT_Z24_UNORM(src, dst, n);
}

static void
unpack_Z_UNORM32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][0] =
      dst[i][1] =
      dst[i][2] = s[i] * (1.0F / 0xffffffff);
      dst[i][3] = 1.0F;
   }
}

static void
unpack_Z32_FLOAT_S8X24_UINT(const void *src, GLfloat dst[][4], GLuint n)
{
   const struct z32f_x24s8 *s = (const struct z32f_x24s8 *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][0] =
      dst[i][1] =
      dst[i][2] = s[i].z;
      dst[i][3] = 1.0F;
   }
}

static void
unpack_Z_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLfloat *s = ((const GLfloat *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][0] =
      dst[i][1] =
      dst[i][2] = s[i];
      dst[i][3] = 1.0F;
   }
}


static void
unpack_S8(const void *src, GLfloat dst[][4], GLuint n)
{
   /* should never be used */
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][0] =
      dst[i][1] =
      dst[i][2] = 0.0F;
      dst[i][3] = 1.0F;
   }
}


static void
unpack_BGR_SRGB8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = (const GLubyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = _mesa_nonlinear_to_linear(s[i*3+2]);
      dst[i][GCOMP] = _mesa_nonlinear_to_linear(s[i*3+1]);
      dst[i][BCOMP] = _mesa_nonlinear_to_linear(s[i*3+0]);
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_A8B8G8R8_SRGB(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = _mesa_nonlinear_to_linear( (s[i] >> 24) );
      dst[i][GCOMP] = _mesa_nonlinear_to_linear( (s[i] >> 16) & 0xff );
      dst[i][BCOMP] = _mesa_nonlinear_to_linear( (s[i] >>  8) & 0xff );
      dst[i][ACOMP] = UBYTE_TO_FLOAT( s[i] & 0xff ); /* linear! */
   }
}

static void
unpack_B8G8R8A8_SRGB(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = _mesa_nonlinear_to_linear( (s[i] >> 16) & 0xff );
      dst[i][GCOMP] = _mesa_nonlinear_to_linear( (s[i] >>  8) & 0xff );
      dst[i][BCOMP] = _mesa_nonlinear_to_linear( (s[i]      ) & 0xff );
      dst[i][ACOMP] = UBYTE_TO_FLOAT( s[i] >> 24 ); /* linear! */
   }
}

static void
unpack_R8G8B8A8_SRGB(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = _mesa_nonlinear_to_linear( (s[i]      ) & 0xff );
      dst[i][GCOMP] = _mesa_nonlinear_to_linear( (s[i] >>  8) & 0xff );
      dst[i][BCOMP] = _mesa_nonlinear_to_linear( (s[i] >> 16) & 0xff );
      dst[i][ACOMP] = UBYTE_TO_FLOAT( s[i] >> 24 ); /* linear! */
   }
}

static void
unpack_L_SRGB8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = ((const GLubyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = 
      dst[i][GCOMP] = 
      dst[i][BCOMP] = _mesa_nonlinear_to_linear(s[i]);
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_L8A8_SRGB(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = (const GLushort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = _mesa_nonlinear_to_linear(s[i] & 0xff);
      dst[i][ACOMP] = UBYTE_TO_FLOAT(s[i] >> 8); /* linear! */
   }
}

static void
unpack_SRGB_DXT1(const void *src, GLfloat dst[][4], GLuint n)
{
}

static void
unpack_SRGBA_DXT1(const void *src, GLfloat dst[][4], GLuint n)
{
}

static void
unpack_SRGBA_DXT3(const void *src, GLfloat dst[][4], GLuint n)
{
}

static void
unpack_SRGBA_DXT5(const void *src, GLfloat dst[][4], GLuint n)
{
}

static void
unpack_RGB_FXT1(const void *src, GLfloat dst[][4], GLuint n)
{
}

static void
unpack_RGBA_FXT1(const void *src, GLfloat dst[][4], GLuint n)
{
}

static void
unpack_RGB_DXT1(const void *src, GLfloat dst[][4], GLuint n)
{
}

static void
unpack_RGBA_DXT1(const void *src, GLfloat dst[][4], GLuint n)
{
}

static void
unpack_RGBA_DXT3(const void *src, GLfloat dst[][4], GLuint n)
{
}

static void
unpack_RGBA_DXT5(const void *src, GLfloat dst[][4], GLuint n)
{
}


static void
unpack_RGBA_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLfloat *s = (const GLfloat *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = s[i*4+0];
      dst[i][GCOMP] = s[i*4+1];
      dst[i][BCOMP] = s[i*4+2];
      dst[i][ACOMP] = s[i*4+3];
   }
}

static void
unpack_RGBA_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLhalfARB *s = (const GLhalfARB *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = _mesa_half_to_float(s[i*4+0]);
      dst[i][GCOMP] = _mesa_half_to_float(s[i*4+1]);
      dst[i][BCOMP] = _mesa_half_to_float(s[i*4+2]);
      dst[i][ACOMP] = _mesa_half_to_float(s[i*4+3]);
   }
}

static void
unpack_RGB_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLfloat *s = (const GLfloat *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = s[i*3+0];
      dst[i][GCOMP] = s[i*3+1];
      dst[i][BCOMP] = s[i*3+2];
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_RGB_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLhalfARB *s = (const GLhalfARB *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = _mesa_half_to_float(s[i*3+0]);
      dst[i][GCOMP] = _mesa_half_to_float(s[i*3+1]);
      dst[i][BCOMP] = _mesa_half_to_float(s[i*3+2]);
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_A_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLfloat *s = (const GLfloat *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = s[i];
   }
}

static void
unpack_A_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLhalfARB *s = (const GLhalfARB *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = _mesa_half_to_float(s[i]);
   }
}

static void
unpack_L_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLfloat *s = (const GLfloat *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = s[i];
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_L_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLhalfARB *s = (const GLhalfARB *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = _mesa_half_to_float(s[i]);
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_LA_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLfloat *s = (const GLfloat *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = s[i*2+0];
      dst[i][ACOMP] = s[i*2+1];
   }
}

static void
unpack_LA_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLhalfARB *s = (const GLhalfARB *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = _mesa_half_to_float(s[i*2+0]);
      dst[i][ACOMP] = _mesa_half_to_float(s[i*2+1]);
   }
}

static void
unpack_I_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLfloat *s = (const GLfloat *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] =
      dst[i][ACOMP] = s[i];
   }
}

static void
unpack_I_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLhalfARB *s = (const GLhalfARB *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] =
      dst[i][ACOMP] = _mesa_half_to_float(s[i]);
   }
}

static void
unpack_R_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLfloat *s = (const GLfloat *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = s[i];
      dst[i][GCOMP] = 0.0F;
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_R_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLhalfARB *s = (const GLhalfARB *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = _mesa_half_to_float(s[i]);
      dst[i][GCOMP] = 0.0F;
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_RG_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLfloat *s = (const GLfloat *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = s[i*2+0];
      dst[i][GCOMP] = s[i*2+1];
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_RG_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLhalfARB *s = (const GLhalfARB *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = _mesa_half_to_float(s[i*2+0]);
      dst[i][GCOMP] = _mesa_half_to_float(s[i*2+1]);
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_ALPHA_UINT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = (const GLubyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = (GLfloat) s[i];
   }
}

static void
unpack_ALPHA_UINT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = (const GLushort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = (GLfloat) s[i];
   }
}

static void
unpack_ALPHA_UINT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = (const GLuint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = (GLfloat) s[i];
   }
}

static void
unpack_ALPHA_INT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLbyte *s = (const GLbyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = (GLfloat) s[i];
   }
}

static void
unpack_ALPHA_INT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = (const GLshort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = (GLfloat) s[i];
   }
}

static void
unpack_ALPHA_INT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLint *s = (const GLint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = (GLfloat) s[i];
   }
}

static void
unpack_INTENSITY_UINT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = (const GLubyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] =
      dst[i][ACOMP] = (GLfloat) s[i];
   }
}

static void
unpack_INTENSITY_UINT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = (const GLushort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] =
      dst[i][ACOMP] = (GLfloat) s[i];
   }
}

static void
unpack_INTENSITY_UINT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = (const GLuint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] =
      dst[i][ACOMP] = (GLfloat) s[i];
   }
}

static void
unpack_INTENSITY_INT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLbyte *s = (const GLbyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] =
      dst[i][ACOMP] = (GLfloat) s[i];
   }
}

static void
unpack_INTENSITY_INT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = (const GLshort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] =
      dst[i][ACOMP] = (GLfloat) s[i];
   }
}

static void
unpack_INTENSITY_INT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLint *s = (const GLint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] =
      dst[i][ACOMP] = (GLfloat) s[i];
   }
}

static void
unpack_LUMINANCE_UINT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = (const GLubyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = dst[i][GCOMP] = dst[i][BCOMP] = (GLfloat) s[i];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_LUMINANCE_UINT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = (const GLushort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = dst[i][GCOMP] = dst[i][BCOMP] = (GLfloat) s[i];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_LUMINANCE_UINT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = (const GLuint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = dst[i][GCOMP] = dst[i][BCOMP] = (GLfloat) s[i];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_LUMINANCE_INT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLbyte *s = (const GLbyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = dst[i][GCOMP] = dst[i][BCOMP] = (GLfloat) s[i];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_LUMINANCE_INT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = (const GLshort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = dst[i][GCOMP] = dst[i][BCOMP] = (GLfloat) s[i];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_LUMINANCE_INT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLint *s = (const GLint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = dst[i][GCOMP] = dst[i][BCOMP] = (GLfloat) s[i];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_LUMINANCE_ALPHA_UINT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = (const GLubyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = (GLfloat) s[2*i+0];
      dst[i][ACOMP] = (GLfloat) s[2*i+1];
   }
}

static void
unpack_LUMINANCE_ALPHA_UINT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = (const GLushort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = (GLfloat) s[2*i+0];
      dst[i][ACOMP] = (GLfloat) s[2*i+1];
   }
}

static void
unpack_LUMINANCE_ALPHA_UINT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = (const GLuint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = (GLfloat) s[2*i+0];
      dst[i][ACOMP] = (GLfloat) s[2*i+1];
   }
}

static void
unpack_LUMINANCE_ALPHA_INT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLbyte *s = (const GLbyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = (GLfloat) s[2*i+0];
      dst[i][ACOMP] = (GLfloat) s[2*i+1];
   }
}

static void
unpack_LUMINANCE_ALPHA_INT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = (const GLshort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = (GLfloat) s[2*i+0];
      dst[i][ACOMP] = (GLfloat) s[2*i+1];
   }
}

static void
unpack_LUMINANCE_ALPHA_INT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLint *s = (const GLint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = (GLfloat) s[2*i+0];
      dst[i][ACOMP] = (GLfloat) s[2*i+1];
   }
}

static void
unpack_R_INT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLbyte *s = (const GLbyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i];
      dst[i][GCOMP] = 0.0;
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RG_INT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLbyte *s = (const GLbyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*2+0];
      dst[i][GCOMP] = (GLfloat) s[i*2+1];
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RGB_INT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLbyte *s = (const GLbyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*3+0];
      dst[i][GCOMP] = (GLfloat) s[i*3+1];
      dst[i][BCOMP] = (GLfloat) s[i*3+2];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RGBA_INT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLbyte *s = (const GLbyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*4+0];
      dst[i][GCOMP] = (GLfloat) s[i*4+1];
      dst[i][BCOMP] = (GLfloat) s[i*4+2];
      dst[i][ACOMP] = (GLfloat) s[i*4+3];
   }
}

static void
unpack_R_INT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = (const GLshort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i];
      dst[i][GCOMP] = 0.0;
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RG_INT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = (const GLshort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*2+0];
      dst[i][GCOMP] = (GLfloat) s[i*2+1];
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RGB_INT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = (const GLshort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*3+0];
      dst[i][GCOMP] = (GLfloat) s[i*3+1];
      dst[i][BCOMP] = (GLfloat) s[i*3+2];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RGBA_INT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = (const GLshort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*4+0];
      dst[i][GCOMP] = (GLfloat) s[i*4+1];
      dst[i][BCOMP] = (GLfloat) s[i*4+2];
      dst[i][ACOMP] = (GLfloat) s[i*4+3];
   }
}

static void
unpack_R_INT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLint *s = (const GLint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i];
      dst[i][GCOMP] = 0.0;
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RG_INT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLint *s = (const GLint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*2+0];
      dst[i][GCOMP] = (GLfloat) s[i*2+1];
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RGB_INT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLint *s = (const GLint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*3+0];
      dst[i][GCOMP] = (GLfloat) s[i*3+1];
      dst[i][BCOMP] = (GLfloat) s[i*3+2];
      dst[i][ACOMP] = 1.0;
   }
}


static void
unpack_RGBA_INT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLint *s = (const GLint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*4+0];
      dst[i][GCOMP] = (GLfloat) s[i*4+1];
      dst[i][BCOMP] = (GLfloat) s[i*4+2];
      dst[i][ACOMP] = (GLfloat) s[i*4+3];
   }
}

static void
unpack_R_UINT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = (const GLubyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i];
      dst[i][GCOMP] = 0.0;
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RG_UINT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = (const GLubyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*2+0];
      dst[i][GCOMP] = (GLfloat) s[i*2+1];
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RGB_UINT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = (const GLubyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*3+0];
      dst[i][GCOMP] = (GLfloat) s[i*3+1];
      dst[i][BCOMP] = (GLfloat) s[i*3+2];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RGBA_UINT8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLubyte *s = (const GLubyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*4+0];
      dst[i][GCOMP] = (GLfloat) s[i*4+1];
      dst[i][BCOMP] = (GLfloat) s[i*4+2];
      dst[i][ACOMP] = (GLfloat) s[i*4+3];
   }
}

static void
unpack_R_UINT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = (const GLushort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i];
      dst[i][GCOMP] = 0.0;
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RG_UINT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = (const GLushort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*2+0];
      dst[i][GCOMP] = (GLfloat) s[i*2+1];
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RGB_UINT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = (const GLushort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*3+0];
      dst[i][GCOMP] = (GLfloat) s[i*3+1];
      dst[i][BCOMP] = (GLfloat) s[i*3+2];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RGBA_UINT16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = (const GLushort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*4+0];
      dst[i][GCOMP] = (GLfloat) s[i*4+1];
      dst[i][BCOMP] = (GLfloat) s[i*4+2];
      dst[i][ACOMP] = (GLfloat) s[i*4+3];
   }
}

static void
unpack_R_UINT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = (const GLuint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i];
      dst[i][GCOMP] = 0.0;
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RG_UINT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = (const GLuint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*2+0];
      dst[i][GCOMP] = (GLfloat) s[i*2+1];
      dst[i][BCOMP] = 0.0;
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RGB_UINT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = (const GLuint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*3+0];
      dst[i][GCOMP] = (GLfloat) s[i*3+1];
      dst[i][BCOMP] = (GLfloat) s[i*3+2];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RGBA_UINT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = (const GLuint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*4+0];
      dst[i][GCOMP] = (GLfloat) s[i*4+1];
      dst[i][BCOMP] = (GLfloat) s[i*4+2];
      dst[i][ACOMP] = (GLfloat) s[i*4+3];
   }
}

static void
unpack_R_SNORM8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLbyte *s = ((const GLbyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = BYTE_TO_FLOAT_TEX( s[i] );
      dst[i][GCOMP] = 0.0F;
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_R8G8_SNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] & 0xff) );
      dst[i][GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 8) );
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_X8B8G8R8_SNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 24) );
      dst[i][GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 16) );
      dst[i][BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >>  8) );
      dst[i][ACOMP] = 1.0f;
   }
}

static void
unpack_A8B8G8R8_SNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 24) );
      dst[i][GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 16) );
      dst[i][BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >>  8) );
      dst[i][ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i]      ) );
   }
}

static void
unpack_R8G8B8A8_SNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i]      ) );
      dst[i][GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >>  8) );
      dst[i][BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 16) );
      dst[i][ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 24) );
   }
}

static void
unpack_R_SNORM16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = ((const GLshort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = SHORT_TO_FLOAT_TEX( s[i] );
      dst[i][GCOMP] = 0.0F;
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_R16G16_SNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = SHORT_TO_FLOAT_TEX( (GLshort) (s[i] & 0xffff) );
      dst[i][GCOMP] = SHORT_TO_FLOAT_TEX( (GLshort) (s[i] >> 16) );
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_RGB_SNORM16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = (const GLshort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = SHORT_TO_FLOAT_TEX( s[i*3+0] );
      dst[i][GCOMP] = SHORT_TO_FLOAT_TEX( s[i*3+1] );
      dst[i][BCOMP] = SHORT_TO_FLOAT_TEX( s[i*3+2] );
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_RGBA_SNORM16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = (const GLshort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = SHORT_TO_FLOAT_TEX( s[i*4+0] );
      dst[i][GCOMP] = SHORT_TO_FLOAT_TEX( s[i*4+1] );
      dst[i][BCOMP] = SHORT_TO_FLOAT_TEX( s[i*4+2] );
      dst[i][ACOMP] = SHORT_TO_FLOAT_TEX( s[i*4+3] );
   }
}

static void
unpack_RGBA_16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = (const GLushort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = USHORT_TO_FLOAT( s[i*4+0] );
      dst[i][GCOMP] = USHORT_TO_FLOAT( s[i*4+1] );
      dst[i][BCOMP] = USHORT_TO_FLOAT( s[i*4+2] );
      dst[i][ACOMP] = USHORT_TO_FLOAT( s[i*4+3] );
   }
}

static void
unpack_RED_RGTC1(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_SIGNED_RED_RGTC1(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_RG_RGTC2(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_SIGNED_RG_RGTC2(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_L_LATC1(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_SIGNED_L_LATC1(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_LA_LATC2(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_SIGNED_LA_LATC2(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_ETC1_RGB8(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_ETC2_RGB8(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_ETC2_SRGB8(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_ETC2_RGBA8_EAC(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_ETC2_SRGB8_ALPHA8_EAC(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_ETC2_R11_EAC(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_ETC2_RG11_EAC(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_ETC2_SIGNED_R11_EAC(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_ETC2_SIGNED_RG11_EAC(const void *src, GLfloat dst[][4], GLuint n)
{
   /* XXX to do */
}

static void
unpack_ETC2_RGB8_PUNCHTHROUGH_ALPHA1(const void *src, GLfloat dst[][4],
                                      GLuint n)
{
   /* XXX to do */
}

static void
unpack_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1(const void *src, GLfloat dst[][4],
                                      GLuint n)
{
   /* XXX to do */
}

static void
unpack_A_SNORM8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLbyte *s = ((const GLbyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = 0.0F;
      dst[i][GCOMP] = 0.0F;
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = BYTE_TO_FLOAT_TEX( s[i] );
   }
}

static void
unpack_L_SNORM8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLbyte *s = ((const GLbyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = BYTE_TO_FLOAT_TEX( s[i] );
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_L8A8_SNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = ((const GLshort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] & 0xff) );
      dst[i][ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 8) );
   }
}

static void
unpack_I_SNORM8(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLbyte *s = ((const GLbyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] =
      dst[i][ACOMP] = BYTE_TO_FLOAT_TEX( s[i] );
   }
}

static void
unpack_A_SNORM16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = ((const GLshort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = 0.0F;
      dst[i][GCOMP] = 0.0F;
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = SHORT_TO_FLOAT_TEX( s[i] );
   }
}

static void
unpack_L_SNORM16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = ((const GLshort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = SHORT_TO_FLOAT_TEX( s[i] );
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_LA_SNORM16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = (const GLshort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = SHORT_TO_FLOAT_TEX( s[i*2+0] );
      dst[i][ACOMP] = SHORT_TO_FLOAT_TEX( s[i*2+1] );
   }
}

static void
unpack_I_SNORM16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = ((const GLshort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] =
      dst[i][ACOMP] = SHORT_TO_FLOAT_TEX( s[i] );
   }
}

static void
unpack_R9G9B9E5_FLOAT(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = (const GLuint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      rgb9e5_to_float3(s[i], dst[i]);
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_R11G11B10_FLOAT(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = (const GLuint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      r11g11b10f_to_float3(s[i], dst[i]);
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_XRGB4444_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = ((s[i] >>  8) & 0xf) * (1.0F / 15.0F);
      dst[i][GCOMP] = ((s[i] >>  4) & 0xf) * (1.0F / 15.0F);
      dst[i][BCOMP] = ((s[i]      ) & 0xf) * (1.0F / 15.0F);
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_XRGB1555_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = ((s[i] >> 10) & 0x1f) * (1.0F / 31.0F);
      dst[i][GCOMP] = ((s[i] >>  5) & 0x1f) * (1.0F / 31.0F);
      dst[i][BCOMP] = ((s[i] >>  0) & 0x1f) * (1.0F / 31.0F);
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_XBGR8888_SNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i]      ) );
      dst[i][GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >>  8) );
      dst[i][BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 16) );
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_R8G8B8X8_SRGB(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = _mesa_nonlinear_to_linear( (s[i]      ) & 0xff );
      dst[i][GCOMP] = _mesa_nonlinear_to_linear( (s[i] >>  8) & 0xff );
      dst[i][BCOMP] = _mesa_nonlinear_to_linear( (s[i] >> 16) & 0xff );
      dst[i][ACOMP] = UBYTE_TO_FLOAT( s[i] >> 24 ); /* linear! */
   }
}

static void
unpack_XBGR8888_UINT(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLbyte *s = (const GLbyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = s[i*4+0];
      dst[i][GCOMP] = s[i*4+1];
      dst[i][BCOMP] = s[i*4+2];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_XBGR8888_SINT(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLbyte *s = (const GLbyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = s[i*4+0];
      dst[i][GCOMP] = s[i*4+1];
      dst[i][BCOMP] = s[i*4+2];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_B10G10R10X2_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = ((s[i] >> 20) & 0x3ff) * (1.0F / 1023.0F);
      dst[i][GCOMP] = ((s[i] >> 10) & 0x3ff) * (1.0F / 1023.0F);
      dst[i][BCOMP] = ((s[i] >>  0) & 0x3ff) * (1.0F / 1023.0F);
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RGBX_UNORM16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = (const GLushort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = USHORT_TO_FLOAT( s[i*4+0] );
      dst[i][GCOMP] = USHORT_TO_FLOAT( s[i*4+1] );
      dst[i][BCOMP] = USHORT_TO_FLOAT( s[i*4+2] );
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RGBX_SNORM16(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = (const GLshort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = SHORT_TO_FLOAT_TEX( s[i*4+0] );
      dst[i][GCOMP] = SHORT_TO_FLOAT_TEX( s[i*4+1] );
      dst[i][BCOMP] = SHORT_TO_FLOAT_TEX( s[i*4+2] );
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_XBGR16161616_FLOAT(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = (const GLshort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = _mesa_half_to_float(s[i*4+0]);
      dst[i][GCOMP] = _mesa_half_to_float(s[i*4+1]);
      dst[i][BCOMP] = _mesa_half_to_float(s[i*4+2]);
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_XBGR16161616_UINT(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = (const GLushort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*4+0];
      dst[i][GCOMP] = (GLfloat) s[i*4+1];
      dst[i][BCOMP] = (GLfloat) s[i*4+2];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_XBGR16161616_SINT(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLshort *s = (const GLshort *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*4+0];
      dst[i][GCOMP] = (GLfloat) s[i*4+1];
      dst[i][BCOMP] = (GLfloat) s[i*4+2];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_RGBX_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLfloat *s = (const GLfloat *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = s[i*4+0];
      dst[i][GCOMP] = s[i*4+1];
      dst[i][BCOMP] = s[i*4+2];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_XBGR32323232_UINT(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = (const GLuint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*4+0];
      dst[i][GCOMP] = (GLfloat) s[i*4+1];
      dst[i][BCOMP] = (GLfloat) s[i*4+2];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_XBGR32323232_SINT(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLint *s = (const GLint *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLfloat) s[i*4+0];
      dst[i][GCOMP] = (GLfloat) s[i*4+1];
      dst[i][BCOMP] = (GLfloat) s[i*4+2];
      dst[i][ACOMP] = 1.0;
   }
}

static void
unpack_R10G10B10A2_UNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = ((s[i] >> 0) & 0x3ff) * (1.0F / 1023.0F);
      dst[i][GCOMP] = ((s[i] >> 10) & 0x3ff) * (1.0F / 1023.0F);
      dst[i][BCOMP] = ((s[i] >> 20) & 0x3ff) * (1.0F / 1023.0F);
      dst[i][ACOMP] = ((s[i] >> 30) &  0x03) * (1.0F / 3.0F);
   }
}

static void
unpack_G8R8_SNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 8) );
      dst[i][GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] & 0xff) );
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_G16R16_SNORM(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = SHORT_TO_FLOAT_TEX( (GLshort) (s[i] >> 16) );
      dst[i][GCOMP] = SHORT_TO_FLOAT_TEX( (GLshort) (s[i] & 0xffff) );
      dst[i][BCOMP] = 0.0F;
      dst[i][ACOMP] = 1.0F;
   }
}

static void
unpack_B8G8R8X8_SRGB(const void *src, GLfloat dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = _mesa_nonlinear_to_linear( (s[i] >> 16) & 0xff );
      dst[i][GCOMP] = _mesa_nonlinear_to_linear( (s[i] >>  8) & 0xff );
      dst[i][BCOMP] = _mesa_nonlinear_to_linear( (s[i]      ) & 0xff );
      dst[i][ACOMP] = 1.0F;
   }
}

/**
 * Return the unpacker function for the given format.
 */
static unpack_rgba_func
get_unpack_rgba_function(mesa_format format)
{
   static unpack_rgba_func table[MESA_FORMAT_COUNT];
   static GLboolean initialized = GL_FALSE;

   if (!initialized) {
      table[MESA_FORMAT_NONE] = NULL;

      table[MESA_FORMAT_A8B8G8R8_UNORM] = unpack_A8B8G8R8_UNORM;
      table[MESA_FORMAT_R8G8B8A8_UNORM] = unpack_R8G8B8A8_UNORM;
      table[MESA_FORMAT_B8G8R8A8_UNORM] = unpack_B8G8R8A8_UNORM;
      table[MESA_FORMAT_A8R8G8B8_UNORM] = unpack_A8R8G8B8_UNORM;
      table[MESA_FORMAT_X8B8G8R8_UNORM] = unpack_RGBX8888;
      table[MESA_FORMAT_R8G8B8X8_UNORM] = unpack_RGBX8888_REV;
      table[MESA_FORMAT_B8G8R8X8_UNORM] = unpack_B8G8R8X8_UNORM;
      table[MESA_FORMAT_X8R8G8B8_UNORM] = unpack_X8R8G8B8_UNORM;
      table[MESA_FORMAT_BGR_UNORM8] = unpack_BGR_UNORM8;
      table[MESA_FORMAT_RGB_UNORM8] = unpack_RGB_UNORM8;
      table[MESA_FORMAT_B5G6R5_UNORM] = unpack_B5G6R5_UNORM;
      table[MESA_FORMAT_R5G6B5_UNORM] = unpack_R5G6B5_UNORM;
      table[MESA_FORMAT_B4G4R4A4_UNORM] = unpack_B4G4R4A4_UNORM;
      table[MESA_FORMAT_A4R4G4B4_UNORM] = unpack_A4R4G4B4_UNORM;
      table[MESA_FORMAT_A1B5G5R5_UNORM] = unpack_A1B5G5R5_UNORM;
      table[MESA_FORMAT_B5G5R5A1_UNORM] = unpack_B5G5R5A1_UNORM;
      table[MESA_FORMAT_A1R5G5B5_UNORM] = unpack_A1R5G5B5_UNORM;
      table[MESA_FORMAT_L4A4_UNORM] = unpack_L4A4_UNORM;
      table[MESA_FORMAT_L8A8_UNORM] = unpack_L8A8_UNORM;
      table[MESA_FORMAT_A8L8_UNORM] = unpack_A8L8_UNORM;
      table[MESA_FORMAT_L16A16_UNORM] = unpack_L16A16_UNORM;
      table[MESA_FORMAT_A16L16_UNORM] = unpack_A16L16_UNORM;
      table[MESA_FORMAT_B2G3R3_UNORM] = unpack_B2G3R3_UNORM;
      table[MESA_FORMAT_A_UNORM8] = unpack_A_UNORM8;
      table[MESA_FORMAT_A_UNORM16] = unpack_A_UNORM16;
      table[MESA_FORMAT_L_UNORM8] = unpack_L_UNORM8;
      table[MESA_FORMAT_L_UNORM16] = unpack_L_UNORM16;
      table[MESA_FORMAT_I_UNORM8] = unpack_I_UNORM8;
      table[MESA_FORMAT_I_UNORM16] = unpack_I_UNORM16;
      table[MESA_FORMAT_YCBCR] = unpack_YCBCR;
      table[MESA_FORMAT_YCBCR_REV] = unpack_YCBCR_REV;
      table[MESA_FORMAT_R_UNORM8] = unpack_R_UNORM8;
      table[MESA_FORMAT_R8G8_UNORM] = unpack_R8G8_UNORM;
      table[MESA_FORMAT_G8R8_UNORM] = unpack_G8R8_UNORM;
      table[MESA_FORMAT_R_UNORM16] = unpack_R_UNORM16;
      table[MESA_FORMAT_R16G16_UNORM] = unpack_R16G16_UNORM;
      table[MESA_FORMAT_G16R16_UNORM] = unpack_G16R16_UNORM;
      table[MESA_FORMAT_B10G10R10A2_UNORM] = unpack_B10G10R10A2_UNORM;
      table[MESA_FORMAT_B10G10R10A2_UINT] = unpack_B10G10R10A2_UINT;
      table[MESA_FORMAT_R10G10B10A2_UINT] = unpack_R10G10B10A2_UINT;
      table[MESA_FORMAT_S8_UINT_Z24_UNORM] = unpack_S8_UINT_Z24_UNORM;
      table[MESA_FORMAT_Z24_UNORM_S8_UINT] = unpack_Z24_UNORM_S8_UINT;
      table[MESA_FORMAT_Z_UNORM16] = unpack_Z_UNORM16;
      table[MESA_FORMAT_Z24_UNORM_X8_UINT] = unpack_Z24_UNORM_X8_UINT;
      table[MESA_FORMAT_X8_UINT_Z24_UNORM] = unpack_X8_UINT_Z24_UNORM;
      table[MESA_FORMAT_Z_UNORM32] = unpack_Z_UNORM32;
      table[MESA_FORMAT_S_UINT8] = unpack_S8;
      table[MESA_FORMAT_BGR_SRGB8] = unpack_BGR_SRGB8;
      table[MESA_FORMAT_A8B8G8R8_SRGB] = unpack_A8B8G8R8_SRGB;
      table[MESA_FORMAT_B8G8R8A8_SRGB] = unpack_B8G8R8A8_SRGB;
      table[MESA_FORMAT_R8G8B8A8_SRGB] = unpack_R8G8B8A8_SRGB;
      table[MESA_FORMAT_L_SRGB8] = unpack_L_SRGB8;
      table[MESA_FORMAT_L8A8_SRGB] = unpack_L8A8_SRGB;
      table[MESA_FORMAT_SRGB_DXT1] = unpack_SRGB_DXT1;
      table[MESA_FORMAT_SRGBA_DXT1] = unpack_SRGBA_DXT1;
      table[MESA_FORMAT_SRGBA_DXT3] = unpack_SRGBA_DXT3;
      table[MESA_FORMAT_SRGBA_DXT5] = unpack_SRGBA_DXT5;

      table[MESA_FORMAT_RGB_FXT1] = unpack_RGB_FXT1;
      table[MESA_FORMAT_RGBA_FXT1] = unpack_RGBA_FXT1;
      table[MESA_FORMAT_RGB_DXT1] = unpack_RGB_DXT1;
      table[MESA_FORMAT_RGBA_DXT1] = unpack_RGBA_DXT1;
      table[MESA_FORMAT_RGBA_DXT3] = unpack_RGBA_DXT3;
      table[MESA_FORMAT_RGBA_DXT5] = unpack_RGBA_DXT5;

      table[MESA_FORMAT_RGBA_FLOAT32] = unpack_RGBA_FLOAT32;
      table[MESA_FORMAT_RGBA_FLOAT16] = unpack_RGBA_FLOAT16;
      table[MESA_FORMAT_RGB_FLOAT32] = unpack_RGB_FLOAT32;
      table[MESA_FORMAT_RGB_FLOAT16] = unpack_RGB_FLOAT16;
      table[MESA_FORMAT_A_FLOAT32] = unpack_A_FLOAT32;
      table[MESA_FORMAT_A_FLOAT16] = unpack_A_FLOAT16;
      table[MESA_FORMAT_L_FLOAT32] = unpack_L_FLOAT32;
      table[MESA_FORMAT_L_FLOAT16] = unpack_L_FLOAT16;
      table[MESA_FORMAT_LA_FLOAT32] = unpack_LA_FLOAT32;
      table[MESA_FORMAT_LA_FLOAT16] = unpack_LA_FLOAT16;
      table[MESA_FORMAT_I_FLOAT32] = unpack_I_FLOAT32;
      table[MESA_FORMAT_I_FLOAT16] = unpack_I_FLOAT16;
      table[MESA_FORMAT_R_FLOAT32] = unpack_R_FLOAT32;
      table[MESA_FORMAT_R_FLOAT16] = unpack_R_FLOAT16;
      table[MESA_FORMAT_RG_FLOAT32] = unpack_RG_FLOAT32;
      table[MESA_FORMAT_RG_FLOAT16] = unpack_RG_FLOAT16;

      table[MESA_FORMAT_A_UINT8] = unpack_ALPHA_UINT8;
      table[MESA_FORMAT_A_UINT16] = unpack_ALPHA_UINT16;
      table[MESA_FORMAT_A_UINT32] = unpack_ALPHA_UINT32;
      table[MESA_FORMAT_A_SINT8] = unpack_ALPHA_INT8;
      table[MESA_FORMAT_A_SINT16] = unpack_ALPHA_INT16;
      table[MESA_FORMAT_A_SINT32] = unpack_ALPHA_INT32;

      table[MESA_FORMAT_I_UINT8] = unpack_INTENSITY_UINT8;
      table[MESA_FORMAT_I_UINT16] = unpack_INTENSITY_UINT16;
      table[MESA_FORMAT_I_UINT32] = unpack_INTENSITY_UINT32;
      table[MESA_FORMAT_I_SINT8] = unpack_INTENSITY_INT8;
      table[MESA_FORMAT_I_SINT16] = unpack_INTENSITY_INT16;
      table[MESA_FORMAT_I_SINT32] = unpack_INTENSITY_INT32;

      table[MESA_FORMAT_L_UINT8] = unpack_LUMINANCE_UINT8;
      table[MESA_FORMAT_L_UINT16] = unpack_LUMINANCE_UINT16;
      table[MESA_FORMAT_L_UINT32] = unpack_LUMINANCE_UINT32;
      table[MESA_FORMAT_L_SINT8] = unpack_LUMINANCE_INT8;
      table[MESA_FORMAT_L_SINT16] = unpack_LUMINANCE_INT16;
      table[MESA_FORMAT_L_SINT32] = unpack_LUMINANCE_INT32;

      table[MESA_FORMAT_LA_UINT8] = unpack_LUMINANCE_ALPHA_UINT8;
      table[MESA_FORMAT_LA_UINT16] = unpack_LUMINANCE_ALPHA_UINT16;
      table[MESA_FORMAT_LA_UINT32] = unpack_LUMINANCE_ALPHA_UINT32;
      table[MESA_FORMAT_LA_SINT8] = unpack_LUMINANCE_ALPHA_INT8;
      table[MESA_FORMAT_LA_SINT16] = unpack_LUMINANCE_ALPHA_INT16;
      table[MESA_FORMAT_LA_SINT32] = unpack_LUMINANCE_ALPHA_INT32;

      table[MESA_FORMAT_R_SINT8] = unpack_R_INT8;
      table[MESA_FORMAT_RG_SINT8] = unpack_RG_INT8;
      table[MESA_FORMAT_RGB_SINT8] = unpack_RGB_INT8;
      table[MESA_FORMAT_RGBA_SINT8] = unpack_RGBA_INT8;
      table[MESA_FORMAT_R_SINT16] = unpack_R_INT16;
      table[MESA_FORMAT_RG_SINT16] = unpack_RG_INT16;
      table[MESA_FORMAT_RGB_SINT16] = unpack_RGB_INT16;
      table[MESA_FORMAT_RGBA_SINT16] = unpack_RGBA_INT16;
      table[MESA_FORMAT_R_SINT32] = unpack_R_INT32;
      table[MESA_FORMAT_RG_SINT32] = unpack_RG_INT32;
      table[MESA_FORMAT_RGB_SINT32] = unpack_RGB_INT32;
      table[MESA_FORMAT_RGBA_SINT32] = unpack_RGBA_INT32;
      table[MESA_FORMAT_R_UINT8] = unpack_R_UINT8;
      table[MESA_FORMAT_RG_UINT8] = unpack_RG_UINT8;
      table[MESA_FORMAT_RGB_UINT8] = unpack_RGB_UINT8;
      table[MESA_FORMAT_RGBA_UINT8] = unpack_RGBA_UINT8;
      table[MESA_FORMAT_R_UINT16] = unpack_R_UINT16;
      table[MESA_FORMAT_RG_UINT16] = unpack_RG_UINT16;
      table[MESA_FORMAT_RGB_UINT16] = unpack_RGB_UINT16;
      table[MESA_FORMAT_RGBA_UINT16] = unpack_RGBA_UINT16;
      table[MESA_FORMAT_R_UINT32] = unpack_R_UINT32;
      table[MESA_FORMAT_RG_UINT32] = unpack_RG_UINT32;
      table[MESA_FORMAT_RGB_UINT32] = unpack_RGB_UINT32;
      table[MESA_FORMAT_RGBA_UINT32] = unpack_RGBA_UINT32;

      table[MESA_FORMAT_R_SNORM8] = unpack_R_SNORM8;
      table[MESA_FORMAT_R8G8_SNORM] = unpack_R8G8_SNORM;
      table[MESA_FORMAT_X8B8G8R8_SNORM] = unpack_X8B8G8R8_SNORM;
      table[MESA_FORMAT_A8B8G8R8_SNORM] = unpack_A8B8G8R8_SNORM;
      table[MESA_FORMAT_R8G8B8A8_SNORM] = unpack_R8G8B8A8_SNORM;
      table[MESA_FORMAT_R_SNORM16] = unpack_R_SNORM16;
      table[MESA_FORMAT_R16G16_SNORM] = unpack_R16G16_SNORM;
      table[MESA_FORMAT_RGB_SNORM16] = unpack_RGB_SNORM16;
      table[MESA_FORMAT_RGBA_SNORM16] = unpack_RGBA_SNORM16;
      table[MESA_FORMAT_RGBA_UNORM16] = unpack_RGBA_16;

      table[MESA_FORMAT_R_RGTC1_UNORM] = unpack_RED_RGTC1;
      table[MESA_FORMAT_R_RGTC1_SNORM] = unpack_SIGNED_RED_RGTC1;
      table[MESA_FORMAT_RG_RGTC2_UNORM] = unpack_RG_RGTC2;
      table[MESA_FORMAT_RG_RGTC2_SNORM] = unpack_SIGNED_RG_RGTC2;

      table[MESA_FORMAT_L_LATC1_UNORM] = unpack_L_LATC1;
      table[MESA_FORMAT_L_LATC1_SNORM] = unpack_SIGNED_L_LATC1;
      table[MESA_FORMAT_LA_LATC2_UNORM] = unpack_LA_LATC2;
      table[MESA_FORMAT_LA_LATC2_SNORM] = unpack_SIGNED_LA_LATC2;

      table[MESA_FORMAT_ETC1_RGB8] = unpack_ETC1_RGB8;
      table[MESA_FORMAT_ETC2_RGB8] = unpack_ETC2_RGB8;
      table[MESA_FORMAT_ETC2_SRGB8] = unpack_ETC2_SRGB8;
      table[MESA_FORMAT_ETC2_RGBA8_EAC] = unpack_ETC2_RGBA8_EAC;
      table[MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC] = unpack_ETC2_SRGB8_ALPHA8_EAC;
      table[MESA_FORMAT_ETC2_R11_EAC] = unpack_ETC2_R11_EAC;
      table[MESA_FORMAT_ETC2_RG11_EAC] = unpack_ETC2_RG11_EAC;
      table[MESA_FORMAT_ETC2_SIGNED_R11_EAC] = unpack_ETC2_SIGNED_R11_EAC;
      table[MESA_FORMAT_ETC2_SIGNED_RG11_EAC] = unpack_ETC2_SIGNED_RG11_EAC;
      table[MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1] =
         unpack_ETC2_RGB8_PUNCHTHROUGH_ALPHA1;
      table[MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1] =
         unpack_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1;
      table[MESA_FORMAT_A_SNORM8] = unpack_A_SNORM8;
      table[MESA_FORMAT_L_SNORM8] = unpack_L_SNORM8;
      table[MESA_FORMAT_L8A8_SNORM] = unpack_L8A8_SNORM;
      table[MESA_FORMAT_I_SNORM8] = unpack_I_SNORM8;
      table[MESA_FORMAT_A_SNORM16] = unpack_A_SNORM16;
      table[MESA_FORMAT_L_SNORM16] = unpack_L_SNORM16;
      table[MESA_FORMAT_LA_SNORM16] = unpack_LA_SNORM16;
      table[MESA_FORMAT_I_SNORM16] = unpack_I_SNORM16;

      table[MESA_FORMAT_R9G9B9E5_FLOAT] = unpack_R9G9B9E5_FLOAT;
      table[MESA_FORMAT_R11G11B10_FLOAT] = unpack_R11G11B10_FLOAT;

      table[MESA_FORMAT_Z_FLOAT32] = unpack_Z_FLOAT32;
      table[MESA_FORMAT_Z32_FLOAT_S8X24_UINT] = unpack_Z32_FLOAT_S8X24_UINT;

      table[MESA_FORMAT_B4G4R4X4_UNORM] = unpack_XRGB4444_UNORM;
      table[MESA_FORMAT_B5G5R5X1_UNORM] = unpack_XRGB1555_UNORM;
      table[MESA_FORMAT_R8G8B8X8_SNORM] = unpack_XBGR8888_SNORM;
      table[MESA_FORMAT_R8G8B8X8_SRGB] = unpack_R8G8B8X8_SRGB;
      table[MESA_FORMAT_RGBX_UINT8] = unpack_XBGR8888_UINT;
      table[MESA_FORMAT_RGBX_SINT8] = unpack_XBGR8888_SINT;
      table[MESA_FORMAT_B10G10R10X2_UNORM] = unpack_B10G10R10X2_UNORM;
      table[MESA_FORMAT_RGBX_UNORM16] = unpack_RGBX_UNORM16;
      table[MESA_FORMAT_RGBX_SNORM16] = unpack_RGBX_SNORM16;
      table[MESA_FORMAT_RGBX_FLOAT16] = unpack_XBGR16161616_FLOAT;
      table[MESA_FORMAT_RGBX_UINT16] = unpack_XBGR16161616_UINT;
      table[MESA_FORMAT_RGBX_SINT16] = unpack_XBGR16161616_SINT;
      table[MESA_FORMAT_RGBX_FLOAT32] = unpack_RGBX_FLOAT32;
      table[MESA_FORMAT_RGBX_UINT32] = unpack_XBGR32323232_UINT;
      table[MESA_FORMAT_RGBX_SINT32] = unpack_XBGR32323232_SINT;

      table[MESA_FORMAT_R10G10B10A2_UNORM] = unpack_R10G10B10A2_UNORM;

      table[MESA_FORMAT_G8R8_SNORM] = unpack_G8R8_SNORM;
      table[MESA_FORMAT_G16R16_SNORM] = unpack_G16R16_SNORM;

      table[MESA_FORMAT_B8G8R8X8_SRGB] = unpack_B8G8R8X8_SRGB;

      initialized = GL_TRUE;
   }

   if (table[format] == NULL) {
      _mesa_problem(NULL, "unsupported unpack for format %s",
                    _mesa_get_format_name(format));
   }

   return table[format];
}


/**
 * Unpack rgba colors, returning as GLfloat values.
 */
void
_mesa_unpack_rgba_row(mesa_format format, GLuint n,
                      const void *src, GLfloat dst[][4])
{
   unpack_rgba_func unpack = get_unpack_rgba_function(format);
   unpack(src, dst, n);
}


/**********************************************************************/
/*  Unpack, returning GLubyte colors                                  */
/**********************************************************************/


static void
unpack_ubyte_A8B8G8R8_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (s[i] >> 24);
      dst[i][GCOMP] = (s[i] >> 16) & 0xff;
      dst[i][BCOMP] = (s[i] >>  8) & 0xff;
      dst[i][ACOMP] = (s[i]      ) & 0xff;
   }
}

static void
unpack_ubyte_R8G8B8A8_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (s[i]      ) & 0xff;
      dst[i][GCOMP] = (s[i] >>  8) & 0xff;
      dst[i][BCOMP] = (s[i] >> 16) & 0xff;
      dst[i][ACOMP] = (s[i] >> 24);
   }
}

static void
unpack_ubyte_B8G8R8A8_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (s[i] >> 16) & 0xff;
      dst[i][GCOMP] = (s[i] >>  8) & 0xff;
      dst[i][BCOMP] = (s[i]      ) & 0xff;
      dst[i][ACOMP] = (s[i] >> 24);
   }
}

static void
unpack_ubyte_A8R8G8B8_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (s[i] >>  8) & 0xff;
      dst[i][GCOMP] = (s[i] >> 16) & 0xff;
      dst[i][BCOMP] = (s[i] >> 24);
      dst[i][ACOMP] = (s[i]      ) & 0xff;
   }
}

static void
unpack_ubyte_RGBX8888(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (s[i] >> 24);
      dst[i][GCOMP] = (s[i] >> 16) & 0xff;
      dst[i][BCOMP] = (s[i] >>  8) & 0xff;
      dst[i][ACOMP] = 0xff;
   }
}

static void
unpack_ubyte_RGBX8888_REV(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (s[i]      ) & 0xff;
      dst[i][GCOMP] = (s[i] >>  8) & 0xff;
      dst[i][BCOMP] = (s[i] >> 16) & 0xff;
      dst[i][ACOMP] = 0xff;
   }
}

static void
unpack_ubyte_B8G8R8X8_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (s[i] >> 16) & 0xff;
      dst[i][GCOMP] = (s[i] >>  8) & 0xff;
      dst[i][BCOMP] = (s[i]      ) & 0xff;
      dst[i][ACOMP] = 0xff;
   }
}

static void
unpack_ubyte_X8R8G8B8_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (s[i] >>  8) & 0xff;
      dst[i][GCOMP] = (s[i] >> 16) & 0xff;
      dst[i][BCOMP] = (s[i] >> 24);
      dst[i][ACOMP] = 0xff;
   }
}

static void
unpack_ubyte_BGR_UNORM8(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLubyte *s = (const GLubyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = s[i*3+2];
      dst[i][GCOMP] = s[i*3+1];
      dst[i][BCOMP] = s[i*3+0];
      dst[i][ACOMP] = 0xff;
   }
}

static void
unpack_ubyte_RGB_UNORM8(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLubyte *s = (const GLubyte *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = s[i*3+0];
      dst[i][GCOMP] = s[i*3+1];
      dst[i][BCOMP] = s[i*3+2];
      dst[i][ACOMP] = 0xff;
   }
}

static void
unpack_ubyte_B5G6R5_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = EXPAND_5_8((s[i] >> 11) & 0x1f);
      dst[i][GCOMP] = EXPAND_6_8((s[i] >> 5 ) & 0x3f);
      dst[i][BCOMP] = EXPAND_5_8( s[i]        & 0x1f);
      dst[i][ACOMP] = 0xff;
   }
}

static void
unpack_ubyte_R5G6B5_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   /* Warning: this function does not match the current Mesa definition
    * of MESA_FORMAT_R5G6B5_UNORM.
    */
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      GLuint t = (s[i] >> 8) | (s[i] << 8); /* byte swap */
      dst[i][RCOMP] = EXPAND_5_8((t >> 11) & 0x1f);
      dst[i][GCOMP] = EXPAND_6_8((t >> 5 ) & 0x3f);
      dst[i][BCOMP] = EXPAND_5_8( t        & 0x1f);
      dst[i][ACOMP] = 0xff;
   }
}

static void
unpack_ubyte_B4G4R4A4_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = EXPAND_4_8((s[i] >>  8) & 0xf);
      dst[i][GCOMP] = EXPAND_4_8((s[i] >>  4) & 0xf);
      dst[i][BCOMP] = EXPAND_4_8((s[i]      ) & 0xf);
      dst[i][ACOMP] = EXPAND_4_8((s[i] >> 12) & 0xf);
   }
}

static void
unpack_ubyte_A4R4G4B4_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = EXPAND_4_8((s[i] >>  4) & 0xf);
      dst[i][GCOMP] = EXPAND_4_8((s[i] >>  8) & 0xf);
      dst[i][BCOMP] = EXPAND_4_8((s[i] >> 12) & 0xf);
      dst[i][ACOMP] = EXPAND_4_8((s[i]      ) & 0xf);
   }
}

static void
unpack_ubyte_A1B5G5R5_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = EXPAND_5_8((s[i] >> 11) & 0x1f);
      dst[i][GCOMP] = EXPAND_5_8((s[i] >>  6) & 0x1f);
      dst[i][BCOMP] = EXPAND_5_8((s[i] >>  1) & 0x1f);
      dst[i][ACOMP] = EXPAND_1_8((s[i]      ) & 0x01);
   }
}

static void
unpack_ubyte_B5G5R5A1_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = EXPAND_5_8((s[i] >> 10) & 0x1f);
      dst[i][GCOMP] = EXPAND_5_8((s[i] >>  5) & 0x1f);
      dst[i][BCOMP] = EXPAND_5_8((s[i] >>  0) & 0x1f);
      dst[i][ACOMP] = EXPAND_1_8((s[i] >> 15) & 0x01);
   }
}

static void
unpack_ubyte_A1R5G5B5_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   /* Warning: this function does not match the current Mesa definition
    * of MESA_FORMAT_A1R5G5B5_UNORM.
    */
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      GLushort tmp = (s[i] << 8) | (s[i] >> 8); /* byteswap */
      dst[i][RCOMP] = EXPAND_5_8((tmp >> 10) & 0x1f);
      dst[i][GCOMP] = EXPAND_5_8((tmp >>  5) & 0x1f);
      dst[i][BCOMP] = EXPAND_5_8((tmp >>  0) & 0x1f);
      dst[i][ACOMP] = EXPAND_1_8((tmp >> 15) & 0x01);
   }
}

static void
unpack_ubyte_L4A4_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLubyte *s = ((const GLubyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = EXPAND_4_8(s[i] & 0xf);
      dst[i][ACOMP] = EXPAND_4_8(s[i] >> 4);
   }
}

static void
unpack_ubyte_L8A8_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = 
      dst[i][GCOMP] = 
      dst[i][BCOMP] = EXPAND_4_8(s[i] & 0xff);
      dst[i][ACOMP] = EXPAND_4_8(s[i] >> 8);
   }
}

static void
unpack_ubyte_A8L8_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = 
      dst[i][GCOMP] = 
      dst[i][BCOMP] = EXPAND_4_8(s[i] >> 8);
      dst[i][ACOMP] = EXPAND_4_8(s[i] & 0xff);
   }
}

static void
unpack_ubyte_B2G3R3_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLubyte *s = ((const GLubyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = EXPAND_3_8((s[i] >> 5) & 0x7);
      dst[i][GCOMP] = EXPAND_3_8((s[i] >> 2) & 0x7);
      dst[i][BCOMP] = EXPAND_2_8((s[i]     ) & 0x3);
      dst[i][ACOMP] = 0xff;
   }
}

static void
unpack_ubyte_A_UNORM8(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLubyte *s = ((const GLubyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = 0;
      dst[i][ACOMP] = s[i];
   }
}

static void
unpack_ubyte_L_UNORM8(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLubyte *s = ((const GLubyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] = s[i];
      dst[i][ACOMP] = 0xff;
   }
}


static void
unpack_ubyte_I_UNORM8(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLubyte *s = ((const GLubyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] =
      dst[i][GCOMP] =
      dst[i][BCOMP] =
      dst[i][ACOMP] = s[i];
   }
}

static void
unpack_ubyte_R_UNORM8(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLubyte *s = ((const GLubyte *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][0] = s[i];
      dst[i][1] =
      dst[i][2] = 0;
      dst[i][3] = 0xff;
   }
}

static void
unpack_ubyte_R8G8_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = s[i] & 0xff;
      dst[i][GCOMP] = s[i] >> 8;
      dst[i][BCOMP] = 0;
      dst[i][ACOMP] = 0xff;
   }
}

static void
unpack_ubyte_G8R8_UNORM(const void *src, GLubyte dst[][4], GLuint n)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = s[i] >> 8;
      dst[i][GCOMP] = s[i] & 0xff;
      dst[i][BCOMP] = 0;
      dst[i][ACOMP] = 0xff;
   }
}


/**
 * Unpack rgba colors, returning as GLubyte values.  This should usually
 * only be used for unpacking formats that use 8 bits or less per channel.
 */
void
_mesa_unpack_ubyte_rgba_row(mesa_format format, GLuint n,
                            const void *src, GLubyte dst[][4])
{
   switch (format) {
   case MESA_FORMAT_A8B8G8R8_UNORM:
      unpack_ubyte_A8B8G8R8_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_R8G8B8A8_UNORM:
      unpack_ubyte_R8G8B8A8_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_B8G8R8A8_UNORM:
      unpack_ubyte_B8G8R8A8_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_A8R8G8B8_UNORM:
      unpack_ubyte_A8R8G8B8_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_X8B8G8R8_UNORM:
      unpack_ubyte_RGBX8888(src, dst, n);
      break;
   case MESA_FORMAT_R8G8B8X8_UNORM:
      unpack_ubyte_RGBX8888_REV(src, dst, n);
      break;
   case MESA_FORMAT_B8G8R8X8_UNORM:
      unpack_ubyte_B8G8R8X8_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_X8R8G8B8_UNORM:
      unpack_ubyte_X8R8G8B8_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_BGR_UNORM8:
      unpack_ubyte_BGR_UNORM8(src, dst, n);
      break;
   case MESA_FORMAT_RGB_UNORM8:
      unpack_ubyte_RGB_UNORM8(src, dst, n);
      break;
   case MESA_FORMAT_B5G6R5_UNORM:
      unpack_ubyte_B5G6R5_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_R5G6B5_UNORM:
      unpack_ubyte_R5G6B5_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_B4G4R4A4_UNORM:
      unpack_ubyte_B4G4R4A4_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_A4R4G4B4_UNORM:
      unpack_ubyte_A4R4G4B4_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_A1B5G5R5_UNORM:
      unpack_ubyte_A1B5G5R5_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_B5G5R5A1_UNORM:
      unpack_ubyte_B5G5R5A1_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_A1R5G5B5_UNORM:
      unpack_ubyte_A1R5G5B5_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_L4A4_UNORM:
      unpack_ubyte_L4A4_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_L8A8_UNORM:
      unpack_ubyte_L8A8_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_A8L8_UNORM:
      unpack_ubyte_A8L8_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_B2G3R3_UNORM:
      unpack_ubyte_B2G3R3_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_A_UNORM8:
      unpack_ubyte_A_UNORM8(src, dst, n);
      break;
   case MESA_FORMAT_L_UNORM8:
      unpack_ubyte_L_UNORM8(src, dst, n);
      break;
   case MESA_FORMAT_I_UNORM8:
      unpack_ubyte_I_UNORM8(src, dst, n);
      break;
   case MESA_FORMAT_R_UNORM8:
      unpack_ubyte_R_UNORM8(src, dst, n);
      break;
   case MESA_FORMAT_R8G8_UNORM:
      unpack_ubyte_R8G8_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_G8R8_UNORM:
      unpack_ubyte_G8R8_UNORM(src, dst, n);
      break;
   default:
      /* get float values, convert to ubyte */
      {
         GLfloat *tmp = malloc(n * 4 * sizeof(GLfloat));
         if (tmp) {
            GLuint i;
            _mesa_unpack_rgba_row(format, n, src, (GLfloat (*)[4]) tmp);
            for (i = 0; i < n; i++) {
               UNCLAMPED_FLOAT_TO_UBYTE(dst[i][0], tmp[i*4+0]);
               UNCLAMPED_FLOAT_TO_UBYTE(dst[i][1], tmp[i*4+1]);
               UNCLAMPED_FLOAT_TO_UBYTE(dst[i][2], tmp[i*4+2]);
               UNCLAMPED_FLOAT_TO_UBYTE(dst[i][3], tmp[i*4+3]);
            }
            free(tmp);
         }
      }
      break;
   }
}


/**********************************************************************/
/*  Unpack, returning GLuint colors                                   */
/**********************************************************************/

static void
unpack_int_rgba_RGBA_UINT32(const GLuint *src, GLuint dst[][4], GLuint n)
{
   memcpy(dst, src, n * 4 * sizeof(GLuint));
}

static void
unpack_int_rgba_RGBA_UINT16(const GLushort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 4 + 0];
      dst[i][1] = src[i * 4 + 1];
      dst[i][2] = src[i * 4 + 2];
      dst[i][3] = src[i * 4 + 3];
   }
}

static void
unpack_int_rgba_RGBA_INT16(const GLshort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 4 + 0];
      dst[i][1] = src[i * 4 + 1];
      dst[i][2] = src[i * 4 + 2];
      dst[i][3] = src[i * 4 + 3];
   }
}

static void
unpack_int_rgba_RGBA_UINT8(const GLubyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 4 + 0];
      dst[i][1] = src[i * 4 + 1];
      dst[i][2] = src[i * 4 + 2];
      dst[i][3] = src[i * 4 + 3];
   }
}

static void
unpack_int_rgba_RGBA_INT8(const GLbyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 4 + 0];
      dst[i][1] = src[i * 4 + 1];
      dst[i][2] = src[i * 4 + 2];
      dst[i][3] = src[i * 4 + 3];
   }
}

static void
unpack_int_rgba_B8G8R8A8_UNORM(const GLbyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLubyte) src[i * 4 + 2];
      dst[i][GCOMP] = (GLubyte) src[i * 4 + 1];
      dst[i][BCOMP] = (GLubyte) src[i * 4 + 0];
      dst[i][ACOMP] = (GLubyte) src[i * 4 + 3];
   }
}

static void
unpack_int_rgba_B8G8R8X8_UNORM(const GLbyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][RCOMP] = (GLubyte) src[i * 4 + 2];
      dst[i][GCOMP] = (GLubyte) src[i * 4 + 1];
      dst[i][BCOMP] = (GLubyte) src[i * 4 + 0];
      dst[i][ACOMP] = (GLubyte) 0xff;
   }
}

static void
unpack_int_rgba_RGB_UINT32(const GLuint *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 3 + 0];
      dst[i][1] = src[i * 3 + 1];
      dst[i][2] = src[i * 3 + 2];
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_RGB_UINT16(const GLushort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 3 + 0];
      dst[i][1] = src[i * 3 + 1];
      dst[i][2] = src[i * 3 + 2];
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_RGB_INT16(const GLshort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 3 + 0];
      dst[i][1] = src[i * 3 + 1];
      dst[i][2] = src[i * 3 + 2];
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_RGB_UINT8(const GLubyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 3 + 0];
      dst[i][1] = src[i * 3 + 1];
      dst[i][2] = src[i * 3 + 2];
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_RGB_INT8(const GLbyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 3 + 0];
      dst[i][1] = src[i * 3 + 1];
      dst[i][2] = src[i * 3 + 2];
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_RG_UINT32(const GLuint *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 2 + 0];
      dst[i][1] = src[i * 2 + 1];
      dst[i][2] = 0;
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_RG_UINT16(const GLushort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 2 + 0];
      dst[i][1] = src[i * 2 + 1];
      dst[i][2] = 0;
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_RG_INT16(const GLshort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 2 + 0];
      dst[i][1] = src[i * 2 + 1];
      dst[i][2] = 0;
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_RG_UINT8(const GLubyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 2 + 0];
      dst[i][1] = src[i * 2 + 1];
      dst[i][2] = 0;
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_RG_INT8(const GLbyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 2 + 0];
      dst[i][1] = src[i * 2 + 1];
      dst[i][2] = 0;
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_R_UINT32(const GLuint *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i];
      dst[i][1] = 0;
      dst[i][2] = 0;
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_R_UINT16(const GLushort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i];
      dst[i][1] = 0;
      dst[i][2] = 0;
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_R_INT16(const GLshort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i];
      dst[i][1] = 0;
      dst[i][2] = 0;
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_R_UINT8(const GLubyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i];
      dst[i][1] = 0;
      dst[i][2] = 0;
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_R_INT8(const GLbyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i];
      dst[i][1] = 0;
      dst[i][2] = 0;
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_ALPHA_UINT32(const GLuint *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = 0;
      dst[i][3] = src[i];
   }
}

static void
unpack_int_rgba_ALPHA_UINT16(const GLushort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = 0;
      dst[i][3] = src[i];
   }
}

static void
unpack_int_rgba_ALPHA_INT16(const GLshort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = 0;
      dst[i][3] = src[i];
   }
}

static void
unpack_int_rgba_ALPHA_UINT8(const GLubyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = 0;
      dst[i][3] = src[i];
   }
}

static void
unpack_int_rgba_ALPHA_INT8(const GLbyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = 0;
      dst[i][3] = src[i];
   }
}

static void
unpack_int_rgba_LUMINANCE_UINT32(const GLuint *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = src[i];
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_LUMINANCE_UINT16(const GLushort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = src[i];
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_LUMINANCE_INT16(const GLshort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = src[i];
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_LUMINANCE_UINT8(const GLubyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = src[i];
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_LUMINANCE_INT8(const GLbyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = src[i];
      dst[i][3] = 1;
   }
}


static void
unpack_int_rgba_LUMINANCE_ALPHA_UINT32(const GLuint *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = src[i * 2 + 0];
      dst[i][3] = src[i * 2 + 1];
   }
}

static void
unpack_int_rgba_LUMINANCE_ALPHA_UINT16(const GLushort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = src[i * 2 + 0];
      dst[i][3] = src[i * 2 + 1];
   }
}

static void
unpack_int_rgba_LUMINANCE_ALPHA_INT16(const GLshort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = src[i * 2 + 0];
      dst[i][3] = src[i * 2 + 1];
   }
}

static void
unpack_int_rgba_LUMINANCE_ALPHA_UINT8(const GLubyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = src[i * 2 + 0];
      dst[i][3] = src[i * 2 + 1];
   }
}

static void
unpack_int_rgba_LUMINANCE_ALPHA_INT8(const GLbyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = src[i * 2 + 0];
      dst[i][3] = src[i * 2 + 1];
   }
}

static void
unpack_int_rgba_INTENSITY_UINT32(const GLuint *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = dst[i][3] = src[i];
   }
}

static void
unpack_int_rgba_INTENSITY_UINT16(const GLushort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = dst[i][3] = src[i];
   }
}

static void
unpack_int_rgba_INTENSITY_INT16(const GLshort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = dst[i][3] = src[i];
   }
}

static void
unpack_int_rgba_INTENSITY_UINT8(const GLubyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = dst[i][3] = src[i];
   }
}

static void
unpack_int_rgba_INTENSITY_INT8(const GLbyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = dst[i][1] = dst[i][2] = dst[i][3] = src[i];
   }
}

static void
unpack_int_rgba_B10G10R10A2_UINT(const GLuint *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      GLuint tmp = src[i];
      dst[i][0] = (tmp >> 20) & 0x3ff;
      dst[i][1] = (tmp >> 10) & 0x3ff;
      dst[i][2] = (tmp >> 0) & 0x3ff;
      dst[i][3] = (tmp >> 30) & 0x3;
   }
}

static void
unpack_int_rgba_R10G10B10A2_UINT(const GLuint *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      GLuint tmp = src[i];
      dst[i][0] = (tmp >> 0) & 0x3ff;
      dst[i][1] = (tmp >> 10) & 0x3ff;
      dst[i][2] = (tmp >> 20) & 0x3ff;
      dst[i][3] = (tmp >> 30) & 0x3;
   }
}

static void
unpack_int_rgba_B10G10R10A2_UNORM(const GLuint *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      GLuint tmp = src[i];
      dst[i][0] = (tmp >> 20) & 0x3ff;
      dst[i][1] = (tmp >> 10) & 0x3ff;
      dst[i][2] = (tmp >> 0) & 0x3ff;
      dst[i][3] = (tmp >> 30) & 0x3;
   }
}

static void
unpack_int_rgba_XBGR8888_UINT(const GLubyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 4 + 0];
      dst[i][1] = src[i * 4 + 1];
      dst[i][2] = src[i * 4 + 2];
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_XBGR8888_SINT(const GLbyte *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 4 + 0];
      dst[i][1] = src[i * 4 + 1];
      dst[i][2] = src[i * 4 + 2];
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_XBGR16161616_UINT(const GLushort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 4 + 0];
      dst[i][1] = src[i * 4 + 1];
      dst[i][2] = src[i * 4 + 2];
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_XBGR16161616_SINT(const GLshort *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 4 + 0];
      dst[i][1] = src[i * 4 + 1];
      dst[i][2] = src[i * 4 + 2];
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_XBGR32323232_UINT(const GLuint *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      dst[i][0] = src[i * 4 + 0];
      dst[i][1] = src[i * 4 + 1];
      dst[i][2] = src[i * 4 + 2];
      dst[i][3] = 1;
   }
}

static void
unpack_int_rgba_R10G10B10A2_UNORM(const GLuint *src, GLuint dst[][4], GLuint n)
{
   unsigned int i;

   for (i = 0; i < n; i++) {
      GLuint tmp = src[i];
      dst[i][0] = (tmp >> 0) & 0x3ff;
      dst[i][1] = (tmp >> 10) & 0x3ff;
      dst[i][2] = (tmp >> 20) & 0x3ff;
      dst[i][3] = (tmp >> 30) & 0x3;
   }
}

void
_mesa_unpack_uint_rgba_row(mesa_format format, GLuint n,
                           const void *src, GLuint dst[][4])
{
   switch (format) {
      /* Since there won't be any sign extension happening, there's no need to
       * make separate paths for 32-bit-to-32-bit integer unpack.
       */
   case MESA_FORMAT_RGBA_UINT32:
   case MESA_FORMAT_RGBA_SINT32:
      unpack_int_rgba_RGBA_UINT32(src, dst, n);
      break;

   case MESA_FORMAT_RGBA_UINT16:
      unpack_int_rgba_RGBA_UINT16(src, dst, n);
      break;
   case MESA_FORMAT_RGBA_SINT16:
      unpack_int_rgba_RGBA_INT16(src, dst, n);
      break;

   case MESA_FORMAT_RGBA_UINT8:
      unpack_int_rgba_RGBA_UINT8(src, dst, n);
      break;
   case MESA_FORMAT_RGBA_SINT8:
      unpack_int_rgba_RGBA_INT8(src, dst, n);
      break;

   case MESA_FORMAT_B8G8R8A8_UNORM:
      unpack_int_rgba_B8G8R8A8_UNORM(src, dst, n);
      break;

   case MESA_FORMAT_B8G8R8X8_UNORM:
      unpack_int_rgba_B8G8R8X8_UNORM(src, dst, n);
      break;

   case MESA_FORMAT_RGB_UINT32:
   case MESA_FORMAT_RGB_SINT32:
      unpack_int_rgba_RGB_UINT32(src, dst, n);
      break;

   case MESA_FORMAT_RGB_UINT16:
      unpack_int_rgba_RGB_UINT16(src, dst, n);
      break;
   case MESA_FORMAT_RGB_SINT16:
      unpack_int_rgba_RGB_INT16(src, dst, n);
      break;

   case MESA_FORMAT_RGB_UINT8:
      unpack_int_rgba_RGB_UINT8(src, dst, n);
      break;
   case MESA_FORMAT_RGB_SINT8:
      unpack_int_rgba_RGB_INT8(src, dst, n);
      break;

   case MESA_FORMAT_RG_UINT32:
   case MESA_FORMAT_RG_SINT32:
      unpack_int_rgba_RG_UINT32(src, dst, n);
      break;

   case MESA_FORMAT_RG_UINT16:
      unpack_int_rgba_RG_UINT16(src, dst, n);
      break;
   case MESA_FORMAT_RG_SINT16:
      unpack_int_rgba_RG_INT16(src, dst, n);
      break;

   case MESA_FORMAT_RG_UINT8:
      unpack_int_rgba_RG_UINT8(src, dst, n);
      break;
   case MESA_FORMAT_RG_SINT8:
      unpack_int_rgba_RG_INT8(src, dst, n);
      break;

   case MESA_FORMAT_R_UINT32:
   case MESA_FORMAT_R_SINT32:
      unpack_int_rgba_R_UINT32(src, dst, n);
      break;

   case MESA_FORMAT_R_UINT16:
      unpack_int_rgba_R_UINT16(src, dst, n);
      break;
   case MESA_FORMAT_R_SINT16:
      unpack_int_rgba_R_INT16(src, dst, n);
      break;

   case MESA_FORMAT_R_UINT8:
      unpack_int_rgba_R_UINT8(src, dst, n);
      break;
   case MESA_FORMAT_R_SINT8:
      unpack_int_rgba_R_INT8(src, dst, n);
      break;

   case MESA_FORMAT_A_UINT32:
   case MESA_FORMAT_A_SINT32:
      unpack_int_rgba_ALPHA_UINT32(src, dst, n);
      break;

   case MESA_FORMAT_A_UINT16:
      unpack_int_rgba_ALPHA_UINT16(src, dst, n);
      break;
   case MESA_FORMAT_A_SINT16:
      unpack_int_rgba_ALPHA_INT16(src, dst, n);
      break;

   case MESA_FORMAT_A_UINT8:
      unpack_int_rgba_ALPHA_UINT8(src, dst, n);
      break;
   case MESA_FORMAT_A_SINT8:
      unpack_int_rgba_ALPHA_INT8(src, dst, n);
      break;

   case MESA_FORMAT_L_UINT32:
   case MESA_FORMAT_L_SINT32:
      unpack_int_rgba_LUMINANCE_UINT32(src, dst, n);
      break;
   case MESA_FORMAT_L_UINT16:
      unpack_int_rgba_LUMINANCE_UINT16(src, dst, n);
      break;
   case MESA_FORMAT_L_SINT16:
      unpack_int_rgba_LUMINANCE_INT16(src, dst, n);
      break;

   case MESA_FORMAT_L_UINT8:
      unpack_int_rgba_LUMINANCE_UINT8(src, dst, n);
      break;
   case MESA_FORMAT_L_SINT8:
      unpack_int_rgba_LUMINANCE_INT8(src, dst, n);
      break;

   case MESA_FORMAT_LA_UINT32:
   case MESA_FORMAT_LA_SINT32:
      unpack_int_rgba_LUMINANCE_ALPHA_UINT32(src, dst, n);
      break;

   case MESA_FORMAT_LA_UINT16:
      unpack_int_rgba_LUMINANCE_ALPHA_UINT16(src, dst, n);
      break;
   case MESA_FORMAT_LA_SINT16:
      unpack_int_rgba_LUMINANCE_ALPHA_INT16(src, dst, n);
      break;

   case MESA_FORMAT_LA_UINT8:
      unpack_int_rgba_LUMINANCE_ALPHA_UINT8(src, dst, n);
      break;
   case MESA_FORMAT_LA_SINT8:
      unpack_int_rgba_LUMINANCE_ALPHA_INT8(src, dst, n);
      break;

   case MESA_FORMAT_I_UINT32:
   case MESA_FORMAT_I_SINT32:
      unpack_int_rgba_INTENSITY_UINT32(src, dst, n);
      break;

   case MESA_FORMAT_I_UINT16:
      unpack_int_rgba_INTENSITY_UINT16(src, dst, n);
      break;
   case MESA_FORMAT_I_SINT16:
      unpack_int_rgba_INTENSITY_INT16(src, dst, n);
      break;

   case MESA_FORMAT_I_UINT8:
      unpack_int_rgba_INTENSITY_UINT8(src, dst, n);
      break;
   case MESA_FORMAT_I_SINT8:
      unpack_int_rgba_INTENSITY_INT8(src, dst, n);
      break;

   case MESA_FORMAT_B10G10R10A2_UINT:
      unpack_int_rgba_B10G10R10A2_UINT(src, dst, n);
      break;

   case MESA_FORMAT_R10G10B10A2_UINT:
      unpack_int_rgba_R10G10B10A2_UINT(src, dst, n);
      break;

   case MESA_FORMAT_B10G10R10A2_UNORM:
      unpack_int_rgba_B10G10R10A2_UNORM(src, dst, n);
      break;

   case MESA_FORMAT_RGBX_UINT8:
      unpack_int_rgba_XBGR8888_UINT(src, dst, n);
      break;

   case MESA_FORMAT_RGBX_SINT8:
      unpack_int_rgba_XBGR8888_SINT(src, dst, n);
      break;

   case MESA_FORMAT_RGBX_UINT16:
      unpack_int_rgba_XBGR16161616_UINT(src, dst, n);
      break;

   case MESA_FORMAT_RGBX_SINT16:
      unpack_int_rgba_XBGR16161616_SINT(src, dst, n);
      break;

   case MESA_FORMAT_RGBX_UINT32:
   case MESA_FORMAT_RGBX_SINT32:
      unpack_int_rgba_XBGR32323232_UINT(src, dst, n);
      break;

   case MESA_FORMAT_R10G10B10A2_UNORM:
      unpack_int_rgba_R10G10B10A2_UNORM(src, dst, n);
      break;

   default:
      _mesa_problem(NULL, "%s: bad format %s", __FUNCTION__,
                    _mesa_get_format_name(format));
      return;
   }
}

/**
 * Unpack a 2D rect of pixels returning float RGBA colors.
 * \param format  the source image format
 * \param src  start address of the source image
 * \param srcRowStride  source image row stride in bytes
 * \param dst  start address of the dest image
 * \param dstRowStride  dest image row stride in bytes
 * \param x  source image start X pos
 * \param y  source image start Y pos
 * \param width  width of rect region to convert
 * \param height  height of rect region to convert
 */
void
_mesa_unpack_rgba_block(mesa_format format,
                        const void *src, GLint srcRowStride,
                        GLfloat dst[][4], GLint dstRowStride,
                        GLuint x, GLuint y, GLuint width, GLuint height)
{
   unpack_rgba_func unpack = get_unpack_rgba_function(format);
   const GLuint srcPixStride = _mesa_get_format_bytes(format);
   const GLuint dstPixStride = 4 * sizeof(GLfloat);
   const GLubyte *srcRow;
   GLubyte *dstRow;
   GLuint i;

   /* XXX needs to be fixed for compressed formats */

   srcRow = ((const GLubyte *) src) + srcRowStride * y + srcPixStride * x;
   dstRow = ((GLubyte *) dst) + dstRowStride * y + dstPixStride * x;

   for (i = 0; i < height; i++) {
      unpack(srcRow, (GLfloat (*)[4]) dstRow, width);

      dstRow += dstRowStride;
      srcRow += srcRowStride;
   }
}




typedef void (*unpack_float_z_func)(GLuint n, const void *src, GLfloat *dst);

static void
unpack_float_z_X8_UINT_Z24_UNORM(GLuint n, const void *src, GLfloat *dst)
{
   /* only return Z, not stencil data */
   const GLuint *s = ((const GLuint *) src);
   const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i] = (GLfloat) ((s[i] >> 8) * scale);
      ASSERT(dst[i] >= 0.0F);
      ASSERT(dst[i] <= 1.0F);
   }
}

static void
unpack_float_z_Z24_UNORM_X8_UINT(GLuint n, const void *src, GLfloat *dst)
{
   /* only return Z, not stencil data */
   const GLuint *s = ((const GLuint *) src);
   const GLdouble scale = 1.0 / (GLdouble) 0xffffff;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i] = (GLfloat) ((s[i] & 0x00ffffff) * scale);
      ASSERT(dst[i] >= 0.0F);
      ASSERT(dst[i] <= 1.0F);
   }
}

static void
unpack_float_Z_UNORM16(GLuint n, const void *src, GLfloat *dst)
{
   const GLushort *s = ((const GLushort *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i] = s[i] * (1.0F / 65535.0F);
   }
}

static void
unpack_float_Z_UNORM32(GLuint n, const void *src, GLfloat *dst)
{
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i] = s[i] * (1.0F / 0xffffffff);
   }
}

static void
unpack_float_Z_FLOAT32(GLuint n, const void *src, GLfloat *dst)
{
   memcpy(dst, src, n * sizeof(float));
}

static void
unpack_float_z_Z32X24S8(GLuint n, const void *src, GLfloat *dst)
{
   const struct z32f_x24s8 *s = (const struct z32f_x24s8 *) src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i] = s[i].z;
   }
}



/**
 * Unpack Z values.
 * The returned values will always be in the range [0.0, 1.0].
 */
void
_mesa_unpack_float_z_row(mesa_format format, GLuint n,
                         const void *src, GLfloat *dst)
{
   unpack_float_z_func unpack;

   switch (format) {
   case MESA_FORMAT_S8_UINT_Z24_UNORM:
   case MESA_FORMAT_X8_UINT_Z24_UNORM:
      unpack = unpack_float_z_X8_UINT_Z24_UNORM;
      break;
   case MESA_FORMAT_Z24_UNORM_S8_UINT:
   case MESA_FORMAT_Z24_UNORM_X8_UINT:
      unpack = unpack_float_z_Z24_UNORM_X8_UINT;
      break;
   case MESA_FORMAT_Z_UNORM16:
      unpack = unpack_float_Z_UNORM16;
      break;
   case MESA_FORMAT_Z_UNORM32:
      unpack = unpack_float_Z_UNORM32;
      break;
   case MESA_FORMAT_Z_FLOAT32:
      unpack = unpack_float_Z_FLOAT32;
      break;
   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
      unpack = unpack_float_z_Z32X24S8;
      break;
   default:
      _mesa_problem(NULL, "bad format %s in _mesa_unpack_float_z_row",
                    _mesa_get_format_name(format));
      return;
   }

   unpack(n, src, dst);
}



typedef void (*unpack_uint_z_func)(const void *src, GLuint *dst, GLuint n);

static void
unpack_uint_z_X8_UINT_Z24_UNORM(const void *src, GLuint *dst, GLuint n)
{
   /* only return Z, not stencil data */
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i] = (s[i] & 0xffffff00) | (s[i] >> 24);
   }
}

static void
unpack_uint_z_Z24_UNORM_X8_UINT(const void *src, GLuint *dst, GLuint n)
{
   /* only return Z, not stencil data */
   const GLuint *s = ((const GLuint *) src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i] = (s[i] << 8) | ((s[i] >> 16) & 0xff);
   }
}

static void
unpack_uint_Z_UNORM16(const void *src, GLuint *dst, GLuint n)
{
   const GLushort *s = ((const GLushort *)src);
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i] = (s[i] << 16) | s[i];
   }
}

static void
unpack_uint_Z_UNORM32(const void *src, GLuint *dst, GLuint n)
{
   memcpy(dst, src, n * sizeof(GLuint));
}

static void
unpack_uint_Z_FLOAT32(const void *src, GLuint *dst, GLuint n)
{
   const float *s = (const float *)src;
   GLuint i;
   for (i = 0; i < n; i++) {
      dst[i] = FLOAT_TO_UINT(CLAMP(s[i], 0.0F, 1.0F));
   }
}

static void
unpack_uint_Z_FLOAT32_X24S8(const void *src, GLuint *dst, GLuint n)
{
   const struct z32f_x24s8 *s = (const struct z32f_x24s8 *) src;
   GLuint i;

   for (i = 0; i < n; i++) {
      dst[i] = FLOAT_TO_UINT(CLAMP(s[i].z, 0.0F, 1.0F));
   }
}


/**
 * Unpack Z values.
 * The returned values will always be in the range [0, 0xffffffff].
 */
void
_mesa_unpack_uint_z_row(mesa_format format, GLuint n,
                        const void *src, GLuint *dst)
{
   unpack_uint_z_func unpack;
   const GLubyte *srcPtr = (GLubyte *) src;

   switch (format) {
   case MESA_FORMAT_S8_UINT_Z24_UNORM:
   case MESA_FORMAT_X8_UINT_Z24_UNORM:
      unpack = unpack_uint_z_X8_UINT_Z24_UNORM;
      break;
   case MESA_FORMAT_Z24_UNORM_S8_UINT:
   case MESA_FORMAT_Z24_UNORM_X8_UINT:
      unpack = unpack_uint_z_Z24_UNORM_X8_UINT;
      break;
   case MESA_FORMAT_Z_UNORM16:
      unpack = unpack_uint_Z_UNORM16;
      break;
   case MESA_FORMAT_Z_UNORM32:
      unpack = unpack_uint_Z_UNORM32;
      break;
   case MESA_FORMAT_Z_FLOAT32:
      unpack = unpack_uint_Z_FLOAT32;
      break;
   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
      unpack = unpack_uint_Z_FLOAT32_X24S8;
      break;
   default:
      _mesa_problem(NULL, "bad format %s in _mesa_unpack_uint_z_row",
                    _mesa_get_format_name(format));
      return;
   }

   unpack(srcPtr, dst, n);
}


static void
unpack_ubyte_s_S_UINT8(const void *src, GLubyte *dst, GLuint n)
{
   memcpy(dst, src, n);
}

static void
unpack_ubyte_s_S8_UINT_Z24_UNORM(const void *src, GLubyte *dst, GLuint n)
{
   GLuint i;
   const GLuint *src32 = src;

   for (i = 0; i < n; i++)
      dst[i] = src32[i] & 0xff;
}

static void
unpack_ubyte_s_Z24_UNORM_S8_UINT(const void *src, GLubyte *dst, GLuint n)
{
   GLuint i;
   const GLuint *src32 = src;

   for (i = 0; i < n; i++)
      dst[i] = src32[i] >> 24;
}

static void
unpack_ubyte_s_Z32_FLOAT_S8X24_UINT(const void *src, GLubyte *dst, GLuint n)
{
   GLuint i;
   const struct z32f_x24s8 *s = (const struct z32f_x24s8 *) src;

   for (i = 0; i < n; i++)
      dst[i] = s[i].x24s8 & 0xff;
}

void
_mesa_unpack_ubyte_stencil_row(mesa_format format, GLuint n,
			       const void *src, GLubyte *dst)
{
   switch (format) {
   case MESA_FORMAT_S_UINT8:
      unpack_ubyte_s_S_UINT8(src, dst, n);
      break;
   case MESA_FORMAT_S8_UINT_Z24_UNORM:
      unpack_ubyte_s_S8_UINT_Z24_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_Z24_UNORM_S8_UINT:
      unpack_ubyte_s_Z24_UNORM_S8_UINT(src, dst, n);
      break;
   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
      unpack_ubyte_s_Z32_FLOAT_S8X24_UINT(src, dst, n);
      break;
   default:
      _mesa_problem(NULL, "bad format %s in _mesa_unpack_ubyte_s_row",
                    _mesa_get_format_name(format));
      return;
   }
}

static void
unpack_uint_24_8_depth_stencil_Z24_UNORM_S8_UINT(const GLuint *src, GLuint *dst, GLuint n)
{
   GLuint i;

   for (i = 0; i < n; i++) {
      GLuint val = src[i];
      dst[i] = val >> 24 | val << 8;
   }
}

static void
unpack_uint_24_8_depth_stencil_Z32_S8X24(const GLuint *src,
                                         GLuint *dst, GLuint n)
{
   GLuint i;

   for (i = 0; i < n; i++) {
      /* 8 bytes per pixel (float + uint32) */
      GLfloat zf = ((GLfloat *) src)[i * 2 + 0];
      GLuint z24 = (GLuint) (zf * (GLfloat) 0xffffff);
      GLuint s = src[i * 2 + 1] & 0xff;
      dst[i] = (z24 << 8) | s;
   }
}

static void
unpack_uint_24_8_depth_stencil_S8_UINT_Z24_UNORM(const GLuint *src, GLuint *dst, GLuint n)
{
   memcpy(dst, src, n * 4);
}

/**
 * Unpack depth/stencil returning as GL_UNSIGNED_INT_24_8.
 * \param format  the source data format
 */
void
_mesa_unpack_uint_24_8_depth_stencil_row(mesa_format format, GLuint n,
					 const void *src, GLuint *dst)
{
   switch (format) {
   case MESA_FORMAT_S8_UINT_Z24_UNORM:
      unpack_uint_24_8_depth_stencil_S8_UINT_Z24_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_Z24_UNORM_S8_UINT:
      unpack_uint_24_8_depth_stencil_Z24_UNORM_S8_UINT(src, dst, n);
      break;
   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
      unpack_uint_24_8_depth_stencil_Z32_S8X24(src, dst, n);
      break;
   default:
      _mesa_problem(NULL,
                    "bad format %s in _mesa_unpack_uint_24_8_depth_stencil_row",
                    _mesa_get_format_name(format));
      return;
   }
}

static void
unpack_float_32_uint_24_8_Z24_UNORM_S8_UINT(const GLuint *src,
                                            GLuint *dst, GLuint n)
{
   GLuint i;
   struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
   const GLdouble scale = 1.0 / (GLdouble) 0xffffff;

   for (i = 0; i < n; i++) {
      const GLuint z24 = src[i] & 0xffffff;
      d[i].z = z24 * scale;
      d[i].x24s8 = src[i] >> 24;
      assert(d[i].z >= 0.0f);
      assert(d[i].z <= 1.0f);
   }
}

static void
unpack_float_32_uint_24_8_Z32_FLOAT_S8X24_UINT(const GLuint *src,
                                               GLuint *dst, GLuint n)
{
   memcpy(dst, src, n * sizeof(struct z32f_x24s8));
}

static void
unpack_float_32_uint_24_8_S8_UINT_Z24_UNORM(const GLuint *src,
                                            GLuint *dst, GLuint n)
{
   GLuint i;
   struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst;
   const GLdouble scale = 1.0 / (GLdouble) 0xffffff;

   for (i = 0; i < n; i++) {
      const GLuint z24 = src[i] >> 8;
      d[i].z = z24 * scale;
      d[i].x24s8 = src[i] & 0xff;
      assert(d[i].z >= 0.0f);
      assert(d[i].z <= 1.0f);
   }
}

/**
 * Unpack depth/stencil returning as GL_FLOAT_32_UNSIGNED_INT_24_8_REV.
 * \param format  the source data format
 *
 * In GL_FLOAT_32_UNSIGNED_INT_24_8_REV lower 4 bytes contain float
 * component and higher 4 bytes contain packed 24-bit and 8-bit
 * components.
 *
 *    31 30 29 28 ... 4 3 2 1 0    31 30 29 ... 9 8 7 6 5 ... 2 1 0
 *    +-------------------------+  +--------------------------------+
 *    |    Float Component      |  | Unused         | 8 bit stencil |
 *    +-------------------------+  +--------------------------------+
 *          lower 4 bytes                  higher 4 bytes
 */
void
_mesa_unpack_float_32_uint_24_8_depth_stencil_row(mesa_format format, GLuint n,
			                          const void *src, GLuint *dst)
{
   switch (format) {
   case MESA_FORMAT_S8_UINT_Z24_UNORM:
      unpack_float_32_uint_24_8_S8_UINT_Z24_UNORM(src, dst, n);
      break;
   case MESA_FORMAT_Z24_UNORM_S8_UINT:
      unpack_float_32_uint_24_8_Z24_UNORM_S8_UINT(src, dst, n);
      break;
   case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
      unpack_float_32_uint_24_8_Z32_FLOAT_S8X24_UINT(src, dst, n);
      break;
   default:
      _mesa_problem(NULL,
                    "bad format %s in _mesa_unpack_uint_24_8_depth_stencil_row",
                    _mesa_get_format_name(format));
      return;
   }
}

/**
 * Unpack depth/stencil
 * \param format  the source data format
 * \param type the destination data type
 */
void
_mesa_unpack_depth_stencil_row(mesa_format format, GLuint n,
	                       const void *src, GLenum type,
                               GLuint *dst)
{
   assert(type == GL_UNSIGNED_INT_24_8 ||
          type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);

   switch (type) {
   case GL_UNSIGNED_INT_24_8:
      _mesa_unpack_uint_24_8_depth_stencil_row(format, n, src, dst);
      break;
   case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
      _mesa_unpack_float_32_uint_24_8_depth_stencil_row(format, n, src, dst);
      break;
   default:
      _mesa_problem(NULL,
                    "bad type 0x%x in _mesa_unpack_depth_stencil_row",
                    type);
      return;
   }
}