Synchronised line endinge with release branch

1 files changed, 1488 insertions, 1488 deletions

diff --git a/mesalib/src/mesa/state_tracker/st_format.c b/mesalib/src/mesa/state_tracker/st_format.c
index d24e5b8d0..bd4f0860c 100644
--- a/mesalib/src/mesa/state_tracker/st_format.c
+++ b/mesalib/src/mesa/state_tracker/st_format.c
@@ -1,1488 +1,1488 @@
-/**************************************************************************

- * 

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

- * Copyright (c) 2008-2010 VMware, Inc.

- * All Rights Reserved.

- * 

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

- * copy of this software and associated documentation files (the

- * "Software"), to deal in the Software without restriction, including

- * without limitation the rights to use, copy, modify, merge, publish,

- * distribute, sub license, and/or sell copies of the Software, and to

- * permit persons to whom the Software is furnished to do so, subject to

- * the following conditions:

- * 

- * The above copyright notice and this permission notice (including the

- * next paragraph) shall be included in all copies or substantial portions

- * of the Software.

- * 

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

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

- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.

- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR

- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

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

- * 

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

-

-

-/**

- * Mesa / Gallium format conversion and format selection code.

- * \author Brian Paul

- */

-

-#include "main/imports.h"

-#include "main/context.h"

-#include "main/texstore.h"

-#include "main/image.h"

-#include "main/macros.h"

-#include "main/mfeatures.h"

-

-#include "pipe/p_context.h"

-#include "pipe/p_defines.h"

-#include "pipe/p_screen.h"

-#include "util/u_format.h"

-#include "st_context.h"

-#include "st_format.h"

-

-

-static GLuint

-format_max_bits(enum pipe_format format)

-{

-   GLuint size = util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 0);

-

-   size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 1));

-   size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 2));

-   size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 3));

-   size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 0));

-   size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1));

-   return size;

-}

-

-

-/**

- * Return basic GL datatype for the given gallium format.

- */

-GLenum

-st_format_datatype(enum pipe_format format)

-{

-   const struct util_format_description *desc;

-   int i;

-

-   desc = util_format_description(format);

-   assert(desc);

-

-   /* Find the first non-VOID channel. */

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

-       if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {

-           break;

-       }

-   }

-

-   if (desc->layout == UTIL_FORMAT_LAYOUT_PLAIN) {

-      if (format == PIPE_FORMAT_B5G5R5A1_UNORM ||

-          format == PIPE_FORMAT_B5G6R5_UNORM) {

-         return GL_UNSIGNED_SHORT;

-      }

-      else if (format == PIPE_FORMAT_R11G11B10_FLOAT ||

-               format == PIPE_FORMAT_R9G9B9E5_FLOAT) {

-         return GL_FLOAT;

-      }

-      else if (format == PIPE_FORMAT_Z24_UNORM_S8_USCALED ||

-               format == PIPE_FORMAT_S8_USCALED_Z24_UNORM ||

-               format == PIPE_FORMAT_Z24X8_UNORM ||

-               format == PIPE_FORMAT_X8Z24_UNORM) {

-         return GL_UNSIGNED_INT_24_8;

-      }

-      else if (format == PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED) {

-         return GL_FLOAT_32_UNSIGNED_INT_24_8_REV;

-      }

-      else {

-         const GLuint size = format_max_bits(format);

-

-         assert(i < 4);

-         if (i == 4)

-            return GL_NONE;

-

-         if (size == 8) {

-            if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)

-               return GL_UNSIGNED_BYTE;

-            else

-               return GL_BYTE;

-         }

-         else if (size == 16) {

-            if (desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT)

-               return GL_HALF_FLOAT;

-            if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)

-               return GL_UNSIGNED_SHORT;

-            else

-               return GL_SHORT;

-         }

-         else if (size <= 32) {

-            if (desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT)

-               return GL_FLOAT;

-            if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)

-               return GL_UNSIGNED_INT;

-            else

-               return GL_INT;

-         }

-         else {

-            assert(size == 64);

-            assert(desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT);

-            return GL_DOUBLE;

-         }

-      }

-   }

-   else if (format == PIPE_FORMAT_UYVY) {

-      return GL_UNSIGNED_SHORT;

-   }

-   else if (format == PIPE_FORMAT_YUYV) {

-      return GL_UNSIGNED_SHORT;

-   }

-   else {

-      /* probably a compressed format, unsupported anyway */

-      return GL_NONE;

-   }

-}

-

-

-/**

- * Translate Mesa format to Gallium format.

- */

-enum pipe_format

-st_mesa_format_to_pipe_format(gl_format mesaFormat)

-{

-   switch (mesaFormat) {

-   case MESA_FORMAT_RGBA8888:

-      return PIPE_FORMAT_A8B8G8R8_UNORM;

-   case MESA_FORMAT_RGBA8888_REV:

-      return PIPE_FORMAT_R8G8B8A8_UNORM;

-   case MESA_FORMAT_ARGB8888:

-      return PIPE_FORMAT_B8G8R8A8_UNORM;

-   case MESA_FORMAT_ARGB8888_REV:

-      return PIPE_FORMAT_A8R8G8B8_UNORM;

-   case MESA_FORMAT_XRGB8888:

-      return PIPE_FORMAT_B8G8R8X8_UNORM;

-   case MESA_FORMAT_XRGB8888_REV:

-      return PIPE_FORMAT_X8R8G8B8_UNORM;

-   case MESA_FORMAT_ARGB1555:

-      return PIPE_FORMAT_B5G5R5A1_UNORM;

-   case MESA_FORMAT_ARGB4444:

-      return PIPE_FORMAT_B4G4R4A4_UNORM;

-   case MESA_FORMAT_RGB565:

-      return PIPE_FORMAT_B5G6R5_UNORM;

-   case MESA_FORMAT_RGB332:

-      return PIPE_FORMAT_B2G3R3_UNORM;

-   case MESA_FORMAT_ARGB2101010:

-      return PIPE_FORMAT_B10G10R10A2_UNORM;

-   case MESA_FORMAT_AL44:

-      return PIPE_FORMAT_L4A4_UNORM;

-   case MESA_FORMAT_AL88:

-      return PIPE_FORMAT_L8A8_UNORM;

-   case MESA_FORMAT_AL1616:

-      return PIPE_FORMAT_L16A16_UNORM;

-   case MESA_FORMAT_A8:

-      return PIPE_FORMAT_A8_UNORM;

-   case MESA_FORMAT_A16:

-      return PIPE_FORMAT_A16_UNORM;

-   case MESA_FORMAT_L8:

-      return PIPE_FORMAT_L8_UNORM;

-   case MESA_FORMAT_L16:

-      return PIPE_FORMAT_L16_UNORM;

-   case MESA_FORMAT_I8:

-      return PIPE_FORMAT_I8_UNORM;

-   case MESA_FORMAT_I16:

-      return PIPE_FORMAT_I16_UNORM;

-   case MESA_FORMAT_Z16:

-      return PIPE_FORMAT_Z16_UNORM;

-   case MESA_FORMAT_Z32:

-      return PIPE_FORMAT_Z32_UNORM;

-   case MESA_FORMAT_Z24_S8:

-      return PIPE_FORMAT_S8_USCALED_Z24_UNORM;

-   case MESA_FORMAT_S8_Z24:

-      return PIPE_FORMAT_Z24_UNORM_S8_USCALED;

-   case MESA_FORMAT_Z24_X8:

-      return PIPE_FORMAT_X8Z24_UNORM;

-   case MESA_FORMAT_X8_Z24:

-      return PIPE_FORMAT_Z24X8_UNORM;

-   case MESA_FORMAT_S8:

-      return PIPE_FORMAT_S8_USCALED;

-   case MESA_FORMAT_Z32_FLOAT:

-      return PIPE_FORMAT_Z32_FLOAT;

-   case MESA_FORMAT_Z32_FLOAT_X24S8:

-      return PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED;

-   case MESA_FORMAT_YCBCR:

-      return PIPE_FORMAT_UYVY;

-#if FEATURE_texture_s3tc

-   case MESA_FORMAT_RGB_DXT1:

-      return PIPE_FORMAT_DXT1_RGB;

-   case MESA_FORMAT_RGBA_DXT1:

-      return PIPE_FORMAT_DXT1_RGBA;

-   case MESA_FORMAT_RGBA_DXT3:

-      return PIPE_FORMAT_DXT3_RGBA;

-   case MESA_FORMAT_RGBA_DXT5:

-      return PIPE_FORMAT_DXT5_RGBA;

-#if FEATURE_EXT_texture_sRGB

-   case MESA_FORMAT_SRGB_DXT1:

-      return PIPE_FORMAT_DXT1_SRGB;

-   case MESA_FORMAT_SRGBA_DXT1:

-      return PIPE_FORMAT_DXT1_SRGBA;

-   case MESA_FORMAT_SRGBA_DXT3:

-      return PIPE_FORMAT_DXT3_SRGBA;

-   case MESA_FORMAT_SRGBA_DXT5:

-      return PIPE_FORMAT_DXT5_SRGBA;

-#endif

-#endif

-#if FEATURE_EXT_texture_sRGB

-   case MESA_FORMAT_SLA8:

-      return PIPE_FORMAT_L8A8_SRGB;

-   case MESA_FORMAT_SL8:

-      return PIPE_FORMAT_L8_SRGB;

-   case MESA_FORMAT_SRGB8:

-      return PIPE_FORMAT_R8G8B8_SRGB;

-   case MESA_FORMAT_SRGBA8:

-      return PIPE_FORMAT_A8B8G8R8_SRGB;

-   case MESA_FORMAT_SARGB8:

-      return PIPE_FORMAT_B8G8R8A8_SRGB;

-#endif

-   case MESA_FORMAT_RGBA_FLOAT32:

-      return PIPE_FORMAT_R32G32B32A32_FLOAT;

-   case MESA_FORMAT_RGBA_FLOAT16:

-      return PIPE_FORMAT_R16G16B16A16_FLOAT;

-   case MESA_FORMAT_RGB_FLOAT32:

-      return PIPE_FORMAT_R32G32B32_FLOAT;

-   case MESA_FORMAT_RGB_FLOAT16:

-      return PIPE_FORMAT_R16G16B16_FLOAT;

-   case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:

-      return PIPE_FORMAT_L32A32_FLOAT;

-   case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:

-      return PIPE_FORMAT_L16A16_FLOAT;

-   case MESA_FORMAT_LUMINANCE_FLOAT32:

-      return PIPE_FORMAT_L32_FLOAT;

-   case MESA_FORMAT_LUMINANCE_FLOAT16:

-      return PIPE_FORMAT_L16_FLOAT;

-   case MESA_FORMAT_ALPHA_FLOAT32:

-      return PIPE_FORMAT_A32_FLOAT;

-   case MESA_FORMAT_ALPHA_FLOAT16:

-      return PIPE_FORMAT_A16_FLOAT;

-   case MESA_FORMAT_INTENSITY_FLOAT32:

-      return PIPE_FORMAT_I32_FLOAT;

-   case MESA_FORMAT_INTENSITY_FLOAT16:

-      return PIPE_FORMAT_I16_FLOAT;

-   case MESA_FORMAT_R_FLOAT32:

-      return PIPE_FORMAT_R32_FLOAT;

-   case MESA_FORMAT_R_FLOAT16:

-      return PIPE_FORMAT_R16_FLOAT;

-   case MESA_FORMAT_RG_FLOAT32:

-      return PIPE_FORMAT_R32G32_FLOAT;

-   case MESA_FORMAT_RG_FLOAT16:

-      return PIPE_FORMAT_R16G16_FLOAT;

-

-   case MESA_FORMAT_R8:

-      return PIPE_FORMAT_R8_UNORM;

-   case MESA_FORMAT_R16:

-      return PIPE_FORMAT_R16_UNORM;

-   case MESA_FORMAT_RG88:

-      return PIPE_FORMAT_R8G8_UNORM;

-   case MESA_FORMAT_RG1616:

-      return PIPE_FORMAT_R16G16_UNORM;

-   case MESA_FORMAT_RGBA_16:

-      return PIPE_FORMAT_R16G16B16A16_UNORM;

-

-   /* signed int formats */

-   case MESA_FORMAT_RGBA_INT8:

-      return PIPE_FORMAT_R8G8B8A8_SSCALED;

-   case MESA_FORMAT_RGBA_INT16:

-      return PIPE_FORMAT_R16G16B16A16_SSCALED;

-   case MESA_FORMAT_RGBA_INT32:

-      return PIPE_FORMAT_R32G32B32A32_SSCALED;

-

-   /* unsigned int formats */

-   case MESA_FORMAT_RGBA_UINT8:

-      return PIPE_FORMAT_R8G8B8A8_USCALED;

-   case MESA_FORMAT_RGBA_UINT16:

-      return PIPE_FORMAT_R16G16B16A16_USCALED;

-   case MESA_FORMAT_RGBA_UINT32:

-      return PIPE_FORMAT_R32G32B32A32_USCALED;

-

-   case MESA_FORMAT_RED_RGTC1:

-      return PIPE_FORMAT_RGTC1_UNORM;

-   case MESA_FORMAT_SIGNED_RED_RGTC1:

-      return PIPE_FORMAT_RGTC1_SNORM;

-   case MESA_FORMAT_RG_RGTC2:

-      return PIPE_FORMAT_RGTC2_UNORM;

-   case MESA_FORMAT_SIGNED_RG_RGTC2:

-      return PIPE_FORMAT_RGTC2_SNORM;

-

-   case MESA_FORMAT_L_LATC1:

-      return PIPE_FORMAT_LATC1_UNORM;

-   case MESA_FORMAT_SIGNED_L_LATC1:

-      return PIPE_FORMAT_LATC1_SNORM;

-   case MESA_FORMAT_LA_LATC2:

-      return PIPE_FORMAT_LATC2_UNORM;

-   case MESA_FORMAT_SIGNED_LA_LATC2:

-      return PIPE_FORMAT_LATC2_SNORM;

-

-   /* signed normalized formats */

-   case MESA_FORMAT_SIGNED_R8:

-      return PIPE_FORMAT_R8_SNORM;

-   case MESA_FORMAT_SIGNED_RG88_REV:

-      return PIPE_FORMAT_R8G8_SNORM;

-   case MESA_FORMAT_SIGNED_RGBA8888_REV:

-      return PIPE_FORMAT_R8G8B8A8_SNORM;

-

-   case MESA_FORMAT_SIGNED_A8:

-      return PIPE_FORMAT_A8_SNORM;

-   case MESA_FORMAT_SIGNED_L8:

-      return PIPE_FORMAT_L8_SNORM;

-   case MESA_FORMAT_SIGNED_AL88:

-      return PIPE_FORMAT_L8A8_SNORM;

-   case MESA_FORMAT_SIGNED_I8:

-      return PIPE_FORMAT_I8_SNORM;

-

-   case MESA_FORMAT_SIGNED_R16:

-      return PIPE_FORMAT_R16_SNORM;

-   case MESA_FORMAT_SIGNED_GR1616:

-      return PIPE_FORMAT_R16G16_SNORM;

-   case MESA_FORMAT_SIGNED_RGBA_16:

-      return PIPE_FORMAT_R16G16B16A16_SNORM;

-

-   case MESA_FORMAT_SIGNED_A16:

-      return PIPE_FORMAT_A16_SNORM;

-   case MESA_FORMAT_SIGNED_L16:

-      return PIPE_FORMAT_L16_SNORM;

-   case MESA_FORMAT_SIGNED_AL1616:

-      return PIPE_FORMAT_L16A16_SNORM;

-   case MESA_FORMAT_SIGNED_I16:

-      return PIPE_FORMAT_I16_SNORM;

-

-   case MESA_FORMAT_RGB9_E5_FLOAT:

-      return PIPE_FORMAT_R9G9B9E5_FLOAT;

-   case MESA_FORMAT_R11_G11_B10_FLOAT:

-      return PIPE_FORMAT_R11G11B10_FLOAT;

-

-   default:

-      assert(0);

-      return PIPE_FORMAT_NONE;

-   }

-}

-

-

-/**

- * Translate Gallium format to Mesa format.

- */

-gl_format

-st_pipe_format_to_mesa_format(enum pipe_format format)

-{

-   switch (format) {

-   case PIPE_FORMAT_A8B8G8R8_UNORM:

-      return MESA_FORMAT_RGBA8888;

-   case PIPE_FORMAT_R8G8B8A8_UNORM:

-      return MESA_FORMAT_RGBA8888_REV;

-   case PIPE_FORMAT_B8G8R8A8_UNORM:

-      return MESA_FORMAT_ARGB8888;

-   case PIPE_FORMAT_A8R8G8B8_UNORM:

-      return MESA_FORMAT_ARGB8888_REV;

-   case PIPE_FORMAT_B8G8R8X8_UNORM:

-      return MESA_FORMAT_XRGB8888;

-   case PIPE_FORMAT_X8R8G8B8_UNORM:

-      return MESA_FORMAT_XRGB8888_REV;

-   case PIPE_FORMAT_B5G5R5A1_UNORM:

-      return MESA_FORMAT_ARGB1555;

-   case PIPE_FORMAT_B4G4R4A4_UNORM:

-      return MESA_FORMAT_ARGB4444;

-   case PIPE_FORMAT_B5G6R5_UNORM:

-      return MESA_FORMAT_RGB565;

-   case PIPE_FORMAT_B2G3R3_UNORM:

-      return MESA_FORMAT_RGB332;

-   case PIPE_FORMAT_B10G10R10A2_UNORM:

-      return MESA_FORMAT_ARGB2101010;

-   case PIPE_FORMAT_L4A4_UNORM:

-      return MESA_FORMAT_AL44;

-   case PIPE_FORMAT_L8A8_UNORM:

-      return MESA_FORMAT_AL88;

-   case PIPE_FORMAT_L16A16_UNORM:

-      return MESA_FORMAT_AL1616;

-   case PIPE_FORMAT_A8_UNORM:

-      return MESA_FORMAT_A8;

-   case PIPE_FORMAT_A16_UNORM:

-      return MESA_FORMAT_A16;

-   case PIPE_FORMAT_L8_UNORM:

-      return MESA_FORMAT_L8;

-   case PIPE_FORMAT_L16_UNORM:

-      return MESA_FORMAT_L16;

-   case PIPE_FORMAT_I8_UNORM:

-      return MESA_FORMAT_I8;

-   case PIPE_FORMAT_I16_UNORM:

-      return MESA_FORMAT_I16;

-   case PIPE_FORMAT_S8_USCALED:

-      return MESA_FORMAT_S8;

-

-   case PIPE_FORMAT_R16G16B16A16_UNORM:

-      return MESA_FORMAT_RGBA_16;

-

-   case PIPE_FORMAT_Z16_UNORM:

-      return MESA_FORMAT_Z16;

-   case PIPE_FORMAT_Z32_UNORM:

-      return MESA_FORMAT_Z32;

-   case PIPE_FORMAT_S8_USCALED_Z24_UNORM:

-      return MESA_FORMAT_Z24_S8;

-   case PIPE_FORMAT_X8Z24_UNORM:

-      return MESA_FORMAT_Z24_X8;

-   case PIPE_FORMAT_Z24X8_UNORM:

-      return MESA_FORMAT_X8_Z24;

-   case PIPE_FORMAT_Z24_UNORM_S8_USCALED:

-      return MESA_FORMAT_S8_Z24;

-   case PIPE_FORMAT_Z32_FLOAT:

-      return MESA_FORMAT_Z32_FLOAT;

-   case PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED:

-      return MESA_FORMAT_Z32_FLOAT_X24S8;

-

-   case PIPE_FORMAT_UYVY:

-      return MESA_FORMAT_YCBCR;

-   case PIPE_FORMAT_YUYV:

-      return MESA_FORMAT_YCBCR_REV;

-

-#if FEATURE_texture_s3tc

-   case PIPE_FORMAT_DXT1_RGB:

-      return MESA_FORMAT_RGB_DXT1;

-   case PIPE_FORMAT_DXT1_RGBA:

-      return MESA_FORMAT_RGBA_DXT1;

-   case PIPE_FORMAT_DXT3_RGBA:

-      return MESA_FORMAT_RGBA_DXT3;

-   case PIPE_FORMAT_DXT5_RGBA:

-      return MESA_FORMAT_RGBA_DXT5;

-#if FEATURE_EXT_texture_sRGB

-   case PIPE_FORMAT_DXT1_SRGB:

-      return MESA_FORMAT_SRGB_DXT1;

-   case PIPE_FORMAT_DXT1_SRGBA:

-      return MESA_FORMAT_SRGBA_DXT1;

-   case PIPE_FORMAT_DXT3_SRGBA:

-      return MESA_FORMAT_SRGBA_DXT3;

-   case PIPE_FORMAT_DXT5_SRGBA:

-      return MESA_FORMAT_SRGBA_DXT5;

-#endif

-#endif

-

-#if FEATURE_EXT_texture_sRGB

-   case PIPE_FORMAT_L8A8_SRGB:

-      return MESA_FORMAT_SLA8;

-   case PIPE_FORMAT_L8_SRGB:

-      return MESA_FORMAT_SL8;

-   case PIPE_FORMAT_R8G8B8_SRGB:

-      return MESA_FORMAT_SRGB8;

-   case PIPE_FORMAT_A8B8G8R8_SRGB:

-      return MESA_FORMAT_SRGBA8;

-   case PIPE_FORMAT_B8G8R8A8_SRGB:

-      return MESA_FORMAT_SARGB8;

-#endif

-   case PIPE_FORMAT_R32G32B32A32_FLOAT:

-      return MESA_FORMAT_RGBA_FLOAT32;

-   case PIPE_FORMAT_R16G16B16A16_FLOAT:

-      return MESA_FORMAT_RGBA_FLOAT16;

-   case PIPE_FORMAT_R32G32B32_FLOAT:

-      return MESA_FORMAT_RGB_FLOAT32;

-   case PIPE_FORMAT_R16G16B16_FLOAT:

-      return MESA_FORMAT_RGB_FLOAT16;

-   case PIPE_FORMAT_L32A32_FLOAT:

-      return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32;

-   case PIPE_FORMAT_L16A16_FLOAT:

-      return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16;

-   case PIPE_FORMAT_L32_FLOAT:

-      return MESA_FORMAT_LUMINANCE_FLOAT32;

-   case PIPE_FORMAT_L16_FLOAT:

-      return MESA_FORMAT_LUMINANCE_FLOAT16;

-   case PIPE_FORMAT_A32_FLOAT:

-      return MESA_FORMAT_ALPHA_FLOAT32;

-   case PIPE_FORMAT_A16_FLOAT:

-      return MESA_FORMAT_ALPHA_FLOAT16;

-   case PIPE_FORMAT_I32_FLOAT:

-      return MESA_FORMAT_INTENSITY_FLOAT32;

-   case PIPE_FORMAT_I16_FLOAT:

-      return MESA_FORMAT_INTENSITY_FLOAT16;

-   case PIPE_FORMAT_R32_FLOAT:

-      return MESA_FORMAT_R_FLOAT32;

-   case PIPE_FORMAT_R16_FLOAT:

-      return MESA_FORMAT_R_FLOAT16;

-   case PIPE_FORMAT_R32G32_FLOAT:

-      return MESA_FORMAT_RG_FLOAT32;

-   case PIPE_FORMAT_R16G16_FLOAT:

-      return MESA_FORMAT_RG_FLOAT16;

-

-   case PIPE_FORMAT_R8_UNORM:

-      return MESA_FORMAT_R8;

-   case PIPE_FORMAT_R16_UNORM:

-      return MESA_FORMAT_R16;

-   case PIPE_FORMAT_R8G8_UNORM:

-      return MESA_FORMAT_RG88;

-   case PIPE_FORMAT_R16G16_UNORM:

-      return MESA_FORMAT_RG1616;

-

-   /* signed int formats */

-   case PIPE_FORMAT_R8G8B8A8_SSCALED:

-      return MESA_FORMAT_RGBA_INT8;

-   case PIPE_FORMAT_R16G16B16A16_SSCALED:

-      return MESA_FORMAT_RGBA_INT16;

-   case PIPE_FORMAT_R32G32B32A32_SSCALED:

-      return MESA_FORMAT_RGBA_INT32;

-

-   /* unsigned int formats */

-   case PIPE_FORMAT_R8G8B8A8_USCALED:

-      return MESA_FORMAT_RGBA_UINT8;

-   case PIPE_FORMAT_R16G16B16A16_USCALED:

-      return MESA_FORMAT_RGBA_UINT16;

-   case PIPE_FORMAT_R32G32B32A32_USCALED:

-      return MESA_FORMAT_RGBA_UINT32;

-

-   case PIPE_FORMAT_RGTC1_UNORM:

-      return MESA_FORMAT_RED_RGTC1;

-   case PIPE_FORMAT_RGTC1_SNORM:

-      return MESA_FORMAT_SIGNED_RED_RGTC1;

-   case PIPE_FORMAT_RGTC2_UNORM:

-      return MESA_FORMAT_RG_RGTC2;

-   case PIPE_FORMAT_RGTC2_SNORM:

-      return MESA_FORMAT_SIGNED_RG_RGTC2;

-

-   case PIPE_FORMAT_LATC1_UNORM:

-      return MESA_FORMAT_L_LATC1;

-   case PIPE_FORMAT_LATC1_SNORM:

-      return MESA_FORMAT_SIGNED_L_LATC1;

-   case PIPE_FORMAT_LATC2_UNORM:

-      return MESA_FORMAT_LA_LATC2;

-   case PIPE_FORMAT_LATC2_SNORM:

-      return MESA_FORMAT_SIGNED_LA_LATC2;

-

-   /* signed normalized formats */

-   case PIPE_FORMAT_R8_SNORM:

-      return MESA_FORMAT_SIGNED_R8;

-   case PIPE_FORMAT_R8G8_SNORM:

-      return MESA_FORMAT_SIGNED_RG88_REV;

-   case PIPE_FORMAT_R8G8B8A8_SNORM:

-      return MESA_FORMAT_SIGNED_RGBA8888_REV;

-

-   case PIPE_FORMAT_A8_SNORM:

-      return MESA_FORMAT_SIGNED_A8;

-   case PIPE_FORMAT_L8_SNORM:

-      return MESA_FORMAT_SIGNED_L8;

-   case PIPE_FORMAT_L8A8_SNORM:

-      return MESA_FORMAT_SIGNED_AL88;

-   case PIPE_FORMAT_I8_SNORM:

-      return MESA_FORMAT_SIGNED_I8;

-

-   case PIPE_FORMAT_R16_SNORM:

-      return MESA_FORMAT_SIGNED_R16;

-   case PIPE_FORMAT_R16G16_SNORM:

-      return MESA_FORMAT_SIGNED_GR1616;

-   case PIPE_FORMAT_R16G16B16A16_SNORM:

-      return MESA_FORMAT_SIGNED_RGBA_16;

-

-   case PIPE_FORMAT_A16_SNORM:

-      return MESA_FORMAT_SIGNED_A16;

-   case PIPE_FORMAT_L16_SNORM:

-      return MESA_FORMAT_SIGNED_L16;

-   case PIPE_FORMAT_L16A16_SNORM:

-      return MESA_FORMAT_SIGNED_AL1616;

-   case PIPE_FORMAT_I16_SNORM:

-      return MESA_FORMAT_SIGNED_I16;

-

-   case PIPE_FORMAT_R9G9B9E5_FLOAT:

-      return MESA_FORMAT_RGB9_E5_FLOAT;

-   case PIPE_FORMAT_R11G11B10_FLOAT:

-      return MESA_FORMAT_R11_G11_B10_FLOAT;

-

-   default:

-      assert(0);

-      return MESA_FORMAT_NONE;

-   }

-}

-

-

-/**

- * Map GL texture formats to Gallium pipe formats.

- */

-struct format_mapping

-{

-   GLenum glFormats[18];       /**< list of GLenum formats, 0-terminated */

-   enum pipe_format pipeFormats[10]; /**< list of pipe formats, 0-terminated */

-};

-

-

-#define DEFAULT_RGBA_FORMATS \

-      PIPE_FORMAT_B8G8R8A8_UNORM, \

-      PIPE_FORMAT_A8R8G8B8_UNORM, \

-      PIPE_FORMAT_A8B8G8R8_UNORM, \

-      PIPE_FORMAT_B5G6R5_UNORM, \

-      0

-

-#define DEFAULT_RGB_FORMATS \

-      PIPE_FORMAT_B8G8R8X8_UNORM, \

-      PIPE_FORMAT_X8R8G8B8_UNORM, \

-      PIPE_FORMAT_X8B8G8R8_UNORM, \

-      PIPE_FORMAT_B8G8R8A8_UNORM, \

-      PIPE_FORMAT_A8R8G8B8_UNORM, \

-      PIPE_FORMAT_A8B8G8R8_UNORM, \

-      PIPE_FORMAT_B5G6R5_UNORM, \

-      0

-

-#define DEFAULT_SRGBA_FORMATS \

-      PIPE_FORMAT_B8G8R8A8_SRGB, \

-      PIPE_FORMAT_A8R8G8B8_SRGB, \

-      PIPE_FORMAT_A8B8G8R8_SRGB, \

-      0

-

-#define DEFAULT_DEPTH_FORMATS \

-      PIPE_FORMAT_Z24X8_UNORM, \

-      PIPE_FORMAT_X8Z24_UNORM, \

-      PIPE_FORMAT_Z16_UNORM, \

-      PIPE_FORMAT_Z24_UNORM_S8_USCALED, \

-      PIPE_FORMAT_S8_USCALED_Z24_UNORM, \

-      0

-

-/**

- * This table maps OpenGL texture format enums to Gallium pipe_format enums.

- * Multiple GL enums might map to multiple pipe_formats.

- * The first pipe format in the list that's supported is the one that's chosen.

- */

-static const struct format_mapping format_map[] = {

-   /* Basic RGB, RGBA formats */

-   {

-      { GL_RGB10, GL_RGB10_A2, 0 },

-      { PIPE_FORMAT_B10G10R10A2_UNORM, DEFAULT_RGBA_FORMATS }

-   },

-   {

-      { 4, GL_RGBA, GL_RGBA8, 0 },

-      { PIPE_FORMAT_R8G8B8A8_UNORM, DEFAULT_RGBA_FORMATS }

-   },

-   {

-      { GL_BGRA, 0 },

-      { PIPE_FORMAT_B8G8R8A8_UNORM, DEFAULT_RGBA_FORMATS }

-   },

-   {

-      { 3, GL_RGB, GL_RGB8, 0 },

-      { DEFAULT_RGB_FORMATS }

-   },

-   {

-      { GL_RGB12, GL_RGB16, GL_RGBA12, GL_RGBA16, 0 },

-      { PIPE_FORMAT_R16G16B16A16_UNORM, DEFAULT_RGBA_FORMATS }

-   },

-   {

-      { GL_RGBA4, GL_RGBA2, 0 },

-      { PIPE_FORMAT_B4G4R4A4_UNORM, DEFAULT_RGBA_FORMATS }

-   },

-   {

-      { GL_RGB5_A1, 0 },

-      { PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGBA_FORMATS }

-   },

-   {

-      { GL_R3_G3_B2, 0 },

-      { PIPE_FORMAT_B2G3R3_UNORM, PIPE_FORMAT_B5G6R5_UNORM,

-        PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGBA_FORMATS }

-   },

-   {

-      { GL_RGB5, GL_RGB4 },

-      { PIPE_FORMAT_B5G6R5_UNORM, PIPE_FORMAT_B5G5R5A1_UNORM,

-        DEFAULT_RGBA_FORMATS }

-   },

-

-   /* basic Alpha formats */

-   {

-      { GL_ALPHA12, GL_ALPHA16, 0 },

-      { PIPE_FORMAT_A16_UNORM, PIPE_FORMAT_A8_UNORM,

-        DEFAULT_RGBA_FORMATS }

-   },

-   {

-      { GL_ALPHA, GL_ALPHA4, GL_ALPHA8, GL_COMPRESSED_ALPHA, 0 },

-      { PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS }

-   },

-

-   /* basic Luminance formats */

-   {

-      { GL_LUMINANCE12, GL_LUMINANCE16, 0 },

-      { PIPE_FORMAT_L16_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }

-   },

-   {

-      { 1, GL_LUMINANCE, GL_LUMINANCE4, GL_LUMINANCE8, 0 },

-      { PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }

-   },

-

-   /* basic Luminance/Alpha formats */

-   {

-      { GL_LUMINANCE12_ALPHA4, GL_LUMINANCE12_ALPHA12,

-        GL_LUMINANCE16_ALPHA16, 0},

-      { PIPE_FORMAT_L16A16_UNORM, PIPE_FORMAT_L8A8_UNORM,

-        DEFAULT_RGBA_FORMATS }

-   },

-   {

-      { 2, GL_LUMINANCE_ALPHA, GL_LUMINANCE6_ALPHA2, GL_LUMINANCE8_ALPHA8, 0 },

-      { PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }

-   },

-   {

-      { GL_LUMINANCE4_ALPHA4, 0 },

-      { PIPE_FORMAT_L4A4_UNORM, PIPE_FORMAT_L8A8_UNORM,

-        DEFAULT_RGBA_FORMATS }

-   },

-

-   /* basic Intensity formats */

-   {

-      { GL_INTENSITY12, GL_INTENSITY16, 0 },

-      { PIPE_FORMAT_I16_UNORM, PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }

-   },

-   {

-      { GL_INTENSITY, GL_INTENSITY4, GL_INTENSITY8,

-        GL_COMPRESSED_INTENSITY, 0 },

-      { PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }

-   },

-

-   /* YCbCr */

-   {

-      { GL_YCBCR_MESA, 0 },

-      { PIPE_FORMAT_UYVY, PIPE_FORMAT_YUYV, 0 }

-   },

-

-   /* compressed formats */ /* XXX PIPE_BIND_SAMPLER_VIEW only */

-   {

-      { GL_COMPRESSED_RGB, 0 },

-      { PIPE_FORMAT_DXT1_RGB, DEFAULT_RGB_FORMATS }

-   },

-   {

-      { GL_COMPRESSED_RGBA, 0 },

-      { PIPE_FORMAT_DXT5_RGBA, DEFAULT_RGBA_FORMATS }

-   },

-   {

-      { GL_RGB_S3TC, GL_RGB4_S3TC, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 0 },

-      { PIPE_FORMAT_DXT1_RGB, 0 }

-   },

-   {

-      { GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 0 },

-      { PIPE_FORMAT_DXT1_RGBA, 0 }

-   },

-   {

-      { GL_RGBA_S3TC, GL_RGBA4_S3TC, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, 0 },

-      { PIPE_FORMAT_DXT3_RGBA, 0 }

-   },

-   {

-      { GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, 0 },

-      { PIPE_FORMAT_DXT5_RGBA, 0 }

-   },

-

-#if 0

-   {

-      { GL_COMPRESSED_RGB_FXT1_3DFX, 0 },

-      { PIPE_FORMAT_RGB_FXT1, 0 }

-   },

-   {

-      { GL_COMPRESSED_RGBA_FXT1_3DFX, 0 },

-      { PIPE_FORMAT_RGBA_FXT1, 0 }

-   },

-#endif

-

-   /* Depth formats */

-   {

-      { GL_DEPTH_COMPONENT16, 0 },

-      { PIPE_FORMAT_Z16_UNORM, DEFAULT_DEPTH_FORMATS }

-   },

-   {

-      { GL_DEPTH_COMPONENT24, 0 },

-      { PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,

-        DEFAULT_DEPTH_FORMATS }

-   },

-   {

-      { GL_DEPTH_COMPONENT32, 0 },

-      { PIPE_FORMAT_Z32_UNORM, DEFAULT_DEPTH_FORMATS }

-   },

-   {

-      { GL_DEPTH_COMPONENT, 0 },

-      { DEFAULT_DEPTH_FORMATS }

-   },

-   {

-      { GL_DEPTH_COMPONENT32F, 0 },

-      { PIPE_FORMAT_Z32_FLOAT, 0 }

-   },

-

-   /* stencil formats */

-   {

-      { GL_STENCIL_INDEX, GL_STENCIL_INDEX1_EXT, GL_STENCIL_INDEX4_EXT,

-        GL_STENCIL_INDEX8_EXT, GL_STENCIL_INDEX16_EXT, 0 },

-      {

-         PIPE_FORMAT_S8_USCALED, PIPE_FORMAT_Z24_UNORM_S8_USCALED,

-         PIPE_FORMAT_S8_USCALED_Z24_UNORM, 0

-      }

-   },

-

-   /* Depth / Stencil formats */

-   {

-      { GL_DEPTH_STENCIL_EXT, GL_DEPTH24_STENCIL8_EXT, 0 },

-      { PIPE_FORMAT_Z24_UNORM_S8_USCALED, PIPE_FORMAT_S8_USCALED_Z24_UNORM, 0 }

-   },

-   {

-      { GL_DEPTH32F_STENCIL8, 0 },

-      { PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED, 0 }

-   },

-

-   /* sRGB formats */

-   {

-      { GL_SRGB_EXT, GL_SRGB8_EXT, GL_SRGB_ALPHA_EXT, GL_SRGB8_ALPHA8_EXT, 0 },

-      { DEFAULT_SRGBA_FORMATS }

-   },

-   {

-      { GL_COMPRESSED_SRGB_EXT, GL_COMPRESSED_SRGB_S3TC_DXT1_EXT, 0 },

-      { PIPE_FORMAT_DXT1_SRGB, DEFAULT_SRGBA_FORMATS }

-   },

-   {

-      { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT, 0 },

-      { PIPE_FORMAT_DXT1_SRGBA, 0 }

-   },

-   {

-      { GL_COMPRESSED_SRGB_ALPHA_EXT,

-        GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT, 0 },

-      { PIPE_FORMAT_DXT3_SRGBA, DEFAULT_SRGBA_FORMATS }

-   },

-   {

-      { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT, 0 },

-      { PIPE_FORMAT_DXT5_SRGBA, 0 }

-   },

-   {

-      { GL_SLUMINANCE_ALPHA_EXT, GL_SLUMINANCE8_ALPHA8_EXT,

-        GL_COMPRESSED_SLUMINANCE_EXT, GL_COMPRESSED_SLUMINANCE_ALPHA_EXT, 0 },

-      { PIPE_FORMAT_L8A8_SRGB, DEFAULT_SRGBA_FORMATS }

-   },

-   {

-      { GL_SLUMINANCE_EXT, GL_SLUMINANCE8_EXT, 0 },

-      { PIPE_FORMAT_L8_SRGB, DEFAULT_SRGBA_FORMATS }

-   },

-

-   /* 16-bit float formats */

-   {

-      { GL_RGBA16F_ARB, 0 },

-      { PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }

-   },

-   {

-      { GL_RGB16F_ARB, 0 },

-      { PIPE_FORMAT_R16G16B16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,

-        PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }

-   },

-   {

-      { GL_LUMINANCE_ALPHA16F_ARB, 0 },

-      { PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,

-        PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }

-   },

-   {

-      { GL_ALPHA16F_ARB, 0 },

-      { PIPE_FORMAT_A16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,

-        PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,

-        PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }

-   },

-   {

-      { GL_INTENSITY16F_ARB, 0 },

-      { PIPE_FORMAT_I16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,

-        PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,

-        PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }

-   },

-   {

-      { GL_LUMINANCE16F_ARB, 0 },

-      { PIPE_FORMAT_L16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,

-        PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,

-        PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }

-   },

-   {

-      { GL_R16F, 0 },

-      { PIPE_FORMAT_R16_FLOAT, PIPE_FORMAT_R16G16_FLOAT,

-        PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,

-        PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }

-   },

-   {

-      { GL_RG16F, 0 },

-      { PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,

-        PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }

-   },

-

-   /* 32-bit float formats */

-   {

-      { GL_RGBA32F_ARB, 0 },

-      { PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }

-   },

-   {

-      { GL_RGB32F_ARB, 0 },

-      { PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,

-        PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }

-   },

-   {

-      { GL_LUMINANCE_ALPHA32F_ARB, 0 },

-      { PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,

-        PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }

-   },

-   {

-      { GL_ALPHA32F_ARB, 0 },

-      { PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,

-        PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_A16_FLOAT,

-        PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }

-   },

-   {

-      { GL_INTENSITY32F_ARB, 0 },

-      { PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,

-        PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_I16_FLOAT,

-        PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }

-   },

-   {

-      { GL_LUMINANCE32F_ARB, 0 },

-      { PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,

-        PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_L16_FLOAT,

-        PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }

-   },

-   {

-      { GL_R32F, 0 },

-      { PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R32G32_FLOAT,

-        PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16_FLOAT,

-        PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }

-   },

-   {

-      { GL_RG32F, 0 },

-      { PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,

-        PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }

-   },

-

-   /* R, RG formats */

-   {

-      { GL_RED, GL_R8, 0 },

-      { PIPE_FORMAT_R8_UNORM, 0 }

-   },

-   {

-      { GL_RG, GL_RG8, 0 },

-      { PIPE_FORMAT_R8G8_UNORM, 0 }

-   },

-   {

-      { GL_R16, 0 },

-      { PIPE_FORMAT_R16_UNORM, 0 }

-   },

-   {

-      { GL_RG16, 0 },

-      { PIPE_FORMAT_R16G16_UNORM, 0 }

-   },

-

-   /* compressed R, RG formats */

-   {

-      { GL_COMPRESSED_RED, GL_COMPRESSED_RED_RGTC1, 0 },

-      { PIPE_FORMAT_RGTC1_UNORM, PIPE_FORMAT_R8_UNORM, 0 }

-   },

-   {

-      { GL_COMPRESSED_SIGNED_RED_RGTC1, 0 },

-      { PIPE_FORMAT_RGTC1_SNORM, 0 }

-   },

-   {

-      { GL_COMPRESSED_RG, GL_COMPRESSED_RG_RGTC2, 0 },

-      { PIPE_FORMAT_RGTC2_UNORM, PIPE_FORMAT_R8G8_UNORM, 0 }

-   },

-   {

-      { GL_COMPRESSED_SIGNED_RG_RGTC2, 0 },

-      { PIPE_FORMAT_RGTC2_SNORM, 0 }

-   },

-   {

-      { GL_COMPRESSED_LUMINANCE, GL_COMPRESSED_LUMINANCE_LATC1_EXT, 0 },

-      { PIPE_FORMAT_LATC1_UNORM, PIPE_FORMAT_L8_UNORM, 0 }

-   },

-   {

-      { GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT, 0 },

-      { PIPE_FORMAT_LATC1_SNORM, 0 }

-   },

-   {

-      { GL_COMPRESSED_LUMINANCE_ALPHA, GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT,

-        GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI, 0 },

-      { PIPE_FORMAT_LATC2_UNORM, PIPE_FORMAT_L8A8_UNORM, 0 }

-   },

-   {

-      { GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT, 0 },

-      { PIPE_FORMAT_LATC2_SNORM, 0 }

-   },

-

-   /* signed/unsigned integer formats.

-    * XXX Mesa only has formats for RGBA signed/unsigned integer formats.

-    * If/when new formats are added this code should be updated.

-    */

-   {

-      { GL_RED_INTEGER_EXT,

-        GL_GREEN_INTEGER_EXT,

-        GL_BLUE_INTEGER_EXT,

-        GL_ALPHA_INTEGER_EXT,

-        GL_RGB_INTEGER_EXT,

-        GL_RGBA_INTEGER_EXT,

-        GL_BGR_INTEGER_EXT,

-        GL_BGRA_INTEGER_EXT,

-        GL_LUMINANCE_INTEGER_EXT,

-        GL_LUMINANCE_ALPHA_INTEGER_EXT,

-        GL_RGBA8I_EXT,

-        GL_RGB8I_EXT,

-        GL_ALPHA8I_EXT,

-        GL_INTENSITY8I_EXT,

-        GL_LUMINANCE8I_EXT,

-        GL_LUMINANCE_ALPHA8I_EXT, 0 },

-      { PIPE_FORMAT_R8G8B8A8_SSCALED, 0 }

-   },

-   {

-      {

-         GL_RGBA16I_EXT,

-         GL_RGB16I_EXT,

-         GL_ALPHA16I_EXT,

-         GL_INTENSITY16I_EXT,

-         GL_LUMINANCE16I_EXT,

-         GL_LUMINANCE_ALPHA16I_EXT, 0 },

-      { PIPE_FORMAT_R16G16B16A16_SSCALED, 0 },

-   },

-   {

-      {

-         GL_RGBA32I_EXT,

-         GL_RGB32I_EXT,

-         GL_ALPHA32I_EXT,

-         GL_INTENSITY32I_EXT,

-         GL_LUMINANCE32I_EXT,

-         GL_LUMINANCE_ALPHA32I_EXT, 0 },

-      { PIPE_FORMAT_R32G32B32A32_SSCALED, 0 }

-   },

-   {

-      {

-         GL_RGBA8UI_EXT,

-         GL_RGB8UI_EXT,

-         GL_ALPHA8UI_EXT,

-         GL_INTENSITY8UI_EXT,

-         GL_LUMINANCE8UI_EXT,

-         GL_LUMINANCE_ALPHA8UI_EXT, 0 },

-      { PIPE_FORMAT_R8G8B8A8_USCALED, 0 }

-   },

-   {

-      {

-         GL_RGBA16UI_EXT,

-         GL_RGB16UI_EXT,

-         GL_ALPHA16UI_EXT,

-         GL_INTENSITY16UI_EXT,

-         GL_LUMINANCE16UI_EXT,

-         GL_LUMINANCE_ALPHA16UI_EXT, 0 },

-      { PIPE_FORMAT_R16G16B16A16_USCALED, 0 }

-   },

-   {

-      {

-         GL_RGBA32UI_EXT,

-         GL_RGB32UI_EXT,

-         GL_ALPHA32UI_EXT,

-         GL_INTENSITY32UI_EXT,

-         GL_LUMINANCE32UI_EXT,

-         GL_LUMINANCE_ALPHA32UI_EXT, 0 },

-      { PIPE_FORMAT_R32G32B32A32_USCALED, 0 }

-   },

-

-   /* signed normalized formats */

-   {

-      { GL_RED_SNORM, GL_R8_SNORM, 0 },

-      { PIPE_FORMAT_R8_SNORM, PIPE_FORMAT_R8G8_SNORM,

-        PIPE_FORMAT_R8G8B8A8_SNORM, 0 }

-   },

-   {

-      { GL_R16_SNORM, 0 },

-      { PIPE_FORMAT_R16_SNORM,

-        PIPE_FORMAT_R16G16_SNORM,

-        PIPE_FORMAT_R16G16B16A16_SNORM,

-        PIPE_FORMAT_R8_SNORM,

-        PIPE_FORMAT_R8G8_SNORM,

-        PIPE_FORMAT_R8G8B8A8_SNORM, 0 }

-   },

-   {

-      { GL_RG_SNORM, GL_RG8_SNORM, 0 },

-      { PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }

-   },

-   {

-      { GL_RG16_SNORM, 0 },

-      { PIPE_FORMAT_R16G16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,

-        PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }

-   },

-   {

-      { GL_RGB_SNORM, GL_RGB8_SNORM, GL_RGBA_SNORM, GL_RGBA8_SNORM, 0 },

-      { PIPE_FORMAT_R8G8B8A8_SNORM, 0 }

-   },

-   {

-      { GL_RGB16_SNORM, GL_RGBA16_SNORM, 0 },

-      { PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }

-   },

-   {

-      { GL_ALPHA_SNORM, GL_ALPHA8_SNORM, 0 },

-      { PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }

-   },

-   {

-      { GL_ALPHA16_SNORM, 0 },

-      { PIPE_FORMAT_A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,

-        PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }

-   },

-   {

-      { GL_LUMINANCE_SNORM, GL_LUMINANCE8_SNORM, 0 },

-      { PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }

-   },

-   {

-      { GL_LUMINANCE16_SNORM, 0 },

-      { PIPE_FORMAT_L16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,

-        PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }

-   },

-   {

-      { GL_LUMINANCE_ALPHA_SNORM, GL_LUMINANCE8_ALPHA8_SNORM, 0 },

-      { PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }

-   },

-   {

-      { GL_LUMINANCE16_ALPHA16_SNORM, 0 },

-      { PIPE_FORMAT_L16A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,

-        PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }

-   },

-   {

-      { GL_INTENSITY_SNORM, GL_INTENSITY8_SNORM, 0 },

-      { PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }

-   },

-   {

-      { GL_INTENSITY16_SNORM, 0 },

-      { PIPE_FORMAT_I16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,

-        PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }

-   },

-   {

-      { GL_RGB9_E5, 0 },

-      { PIPE_FORMAT_R9G9B9E5_FLOAT, 0 }

-   },

-   {

-      { GL_R11F_G11F_B10F, 0 },

-      { PIPE_FORMAT_R11G11B10_FLOAT, 0 }

-   }

-};

-

-

-/**

- * Return first supported format from the given list.

- */

-static enum pipe_format

-find_supported_format(struct pipe_screen *screen,

-                      const enum pipe_format formats[],

-                      enum pipe_texture_target target,

-                      unsigned sample_count,

-                      unsigned tex_usage)

-{

-   uint i;

-   for (i = 0; formats[i]; i++) {

-      if (screen->is_format_supported(screen, formats[i], target,

-                                      sample_count, tex_usage)) {

-         return formats[i];

-      }

-   }

-   return PIPE_FORMAT_NONE;

-}

-

-struct exact_format_mapping

-{

-   GLenum format;

-   GLenum type;

-   enum pipe_format pformat;

-};

-

-static const struct exact_format_mapping rgba8888_tbl[] =

-{

-   { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_A8B8G8R8_UNORM },

-   { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_A8B8G8R8_UNORM },

-   { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_R8G8B8A8_UNORM },

-   { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_R8G8B8A8_UNORM },

-   { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_A8R8G8B8_UNORM },

-   { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_B8G8R8A8_UNORM },

-   { GL_RGBA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_R8G8B8A8_UNORM },

-   { GL_ABGR_EXT, GL_UNSIGNED_BYTE,               PIPE_FORMAT_A8B8G8R8_UNORM },

-   { GL_BGRA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_B8G8R8A8_UNORM },

-   { 0,           0,                              0                          }

-};

-

-static const struct exact_format_mapping rgbx8888_tbl[] =

-{

-   { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_X8R8G8B8_UNORM },

-   { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_B8G8R8X8_UNORM },

-   { GL_BGRA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_B8G8R8X8_UNORM },

-   /* No Mesa formats for these Gallium formats:

-   { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_X8B8G8R8_UNORM },

-   { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_X8B8G8R8_UNORM },

-   { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_R8G8B8X8_UNORM },

-   { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_R8G8B8X8_UNORM },

-   { GL_RGBA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_R8G8B8X8_UNORM },

-   { GL_ABGR_EXT, GL_UNSIGNED_BYTE,               PIPE_FORMAT_X8B8G8R8_UNORM },

-   */

-   { 0,           0,                              0                          }

-};

-

-static const struct exact_format_mapping rgba1010102_tbl[] =

-{

-   { GL_BGRA,     GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_B10G10R10A2_UNORM },

-   /* No Mesa formats for these Gallium formats:

-   { GL_RGBA,     GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_R10G10B10A2_UNORM },

-   { GL_ABGR_EXT, GL_UNSIGNED_INT_10_10_10_2,     PIPE_FORMAT_R10G10B10A2_UNORM },

-   { GL_ABGR_EXT, GL_UNSIGNED_INT,                PIPE_FORMAT_R10G10B10A2_UNORM },

-   */

-   { 0,           0,                              0                             }

-};

-

-/**

- * If there is an exact pipe_format match for {internalFormat, format, type}

- * return that, otherwise return PIPE_FORMAT_NONE so we can do fuzzy matching.

- */

-static enum pipe_format

-find_exact_format(GLint internalFormat, GLenum format, GLenum type)

-{

-   uint i;

-   const struct exact_format_mapping* tbl;

-

-   if (format == GL_NONE || type == GL_NONE)

-      return PIPE_FORMAT_NONE;

-

-   switch (internalFormat) {

-   case 4:

-   case GL_RGBA:

-   case GL_RGBA8:

-      tbl = rgba8888_tbl;

-      break;

-   case 3:

-   case GL_RGB:

-   case GL_RGB8:

-      tbl = rgbx8888_tbl;

-      break;

-   case GL_RGB10_A2:

-      tbl = rgba1010102_tbl;

-      break;

-   default:

-      return PIPE_FORMAT_NONE;

-   }

-

-   for (i = 0; tbl[i].format; i++)

-      if (tbl[i].format == format && tbl[i].type == type)

-         return tbl[i].pformat;

-

-   return PIPE_FORMAT_NONE;

-}

-

-/**

- * Given an OpenGL internalFormat value for a texture or surface, return

- * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.

- * This is called during glTexImage2D, for example.

- *

- * The bindings parameter typically has PIPE_BIND_SAMPLER_VIEW set, plus

- * either PIPE_BINDING_RENDER_TARGET or PIPE_BINDING_DEPTH_STENCIL if

- * we want render-to-texture ability.

- *

- * \param internalFormat  the user value passed to glTexImage2D

- * \param target  one of PIPE_TEXTURE_x

- * \param bindings  bitmask of PIPE_BIND_x flags.

- */

-enum pipe_format

-st_choose_format(struct pipe_screen *screen, GLenum internalFormat,

-                 GLenum format, GLenum type,

-                 enum pipe_texture_target target, unsigned sample_count,

-                 unsigned bindings)

-{

-   GET_CURRENT_CONTEXT(ctx); /* XXX this should be a function parameter */

-   int i, j;

-   enum pipe_format pf;

-

-   /* can't render to compressed formats at this time */

-   if (_mesa_is_compressed_format(ctx, internalFormat)

-       && (bindings & ~PIPE_BIND_SAMPLER_VIEW)) {

-      return PIPE_FORMAT_NONE;

-   }

-

-   /* search for exact matches */

-   pf = find_exact_format(internalFormat, format, type);

-   if (pf != PIPE_FORMAT_NONE &&

-       screen->is_format_supported(screen, pf,

-                                   target, sample_count, bindings))

-      return pf;

-

-   /* search table for internalFormat */

-   for (i = 0; i < Elements(format_map); i++) {

-      const struct format_mapping *mapping = &format_map[i];

-      for (j = 0; mapping->glFormats[j]; j++) {

-         if (mapping->glFormats[j] == internalFormat) {

-            /* Found the desired internal format.  Find first pipe format

-             * which is supported by the driver.

-             */

-            return find_supported_format(screen, mapping->pipeFormats,

-                                         target, sample_count, bindings);

-         }

-      }

-   }

-

-   _mesa_problem(NULL, "unhandled format!\n");

-   return PIPE_FORMAT_NONE;

-}

-

-

-/**

- * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.

- */

-enum pipe_format

-st_choose_renderbuffer_format(struct pipe_screen *screen,

-                              GLenum internalFormat, unsigned sample_count)

-{

-   uint usage;

-   if (_mesa_is_depth_or_stencil_format(internalFormat))

-      usage = PIPE_BIND_DEPTH_STENCIL;

-   else

-      usage = PIPE_BIND_RENDER_TARGET;

-   return st_choose_format(screen, internalFormat, GL_NONE, GL_NONE, PIPE_TEXTURE_2D,

-                           sample_count, usage);

-}

-

-

-gl_format

-st_ChooseTextureFormat_renderable(struct gl_context *ctx, GLint internalFormat,

-				  GLenum format, GLenum type, GLboolean renderable)

-{

-   struct pipe_screen *screen = st_context(ctx)->pipe->screen;

-   enum pipe_format pFormat;

-   uint bindings;

-

-   (void) format;

-   (void) type;

-

-   /* GL textures may wind up being render targets, but we don't know

-    * that in advance.  Specify potential render target flags now.

-    */

-   bindings = PIPE_BIND_SAMPLER_VIEW;

-   if (renderable) {

-      if (_mesa_is_depth_or_stencil_format(internalFormat))

-	 bindings |= PIPE_BIND_DEPTH_STENCIL;

-      else

-	 bindings |= PIPE_BIND_RENDER_TARGET;

-   }

-

-   pFormat = st_choose_format(screen, internalFormat, format, type,

-                              PIPE_TEXTURE_2D, 0, bindings);

-

-   if (pFormat == PIPE_FORMAT_NONE) {

-      /* try choosing format again, this time without render target bindings */

-      pFormat = st_choose_format(screen, internalFormat, format, type,

-                                 PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW);

-   }

-

-   if (pFormat == PIPE_FORMAT_NONE) {

-      /* no luck at all */

-      return MESA_FORMAT_NONE;

-   }

-

-   return st_pipe_format_to_mesa_format(pFormat);

-}

-

-

-/**

- * Called via ctx->Driver.ChooseTextureFormat().

- */

-gl_format

-st_ChooseTextureFormat(struct gl_context *ctx, GLint internalFormat,

-                       GLenum format, GLenum type)

-{

-   boolean want_renderable =

-      internalFormat == 3 || internalFormat == 4 ||

-      internalFormat == GL_RGB || internalFormat == GL_RGBA ||

-      internalFormat == GL_RGB8 || internalFormat == GL_RGBA8 ||

-      internalFormat == GL_BGRA;

-

-   return st_ChooseTextureFormat_renderable(ctx, internalFormat,

-					    format, type, want_renderable);

-}

-

-/**

- * Test if a gallium format is equivalent to a GL format/type.

- */

-GLboolean

-st_equal_formats(enum pipe_format pFormat, GLenum format, GLenum type)

-{

-   switch (pFormat) {

-   case PIPE_FORMAT_A8B8G8R8_UNORM:

-      return format == GL_RGBA && type == GL_UNSIGNED_BYTE;

-   case PIPE_FORMAT_A8R8G8B8_UNORM:

-      return format == GL_BGRA && type == GL_UNSIGNED_BYTE;

-   case PIPE_FORMAT_B5G6R5_UNORM:

-      return format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5;

-   /* XXX more combos... */

-   default:

-      return GL_FALSE;

-   }

-}

-

-GLboolean

-st_sampler_compat_formats(enum pipe_format format1, enum pipe_format format2)

-{

-   if (format1 == format2)

-      return GL_TRUE;

-

-   if (format1 == PIPE_FORMAT_B8G8R8A8_UNORM &&

-       format2 == PIPE_FORMAT_B8G8R8X8_UNORM)

-      return GL_TRUE;

-

-   if (format1 == PIPE_FORMAT_B8G8R8X8_UNORM &&

-       format2 == PIPE_FORMAT_B8G8R8A8_UNORM)

-      return GL_TRUE;

-

-   if (format1 == PIPE_FORMAT_A8B8G8R8_UNORM &&

-       format2 == PIPE_FORMAT_X8B8G8R8_UNORM)

-      return GL_TRUE;

-

-   if (format1 == PIPE_FORMAT_X8B8G8R8_UNORM &&

-       format2 == PIPE_FORMAT_A8B8G8R8_UNORM)

-      return GL_TRUE;

-

-   if (format1 == PIPE_FORMAT_A8R8G8B8_UNORM &&

-       format2 == PIPE_FORMAT_X8R8G8B8_UNORM)

-      return GL_TRUE;

-

-   if (format1 == PIPE_FORMAT_X8R8G8B8_UNORM &&

-       format2 == PIPE_FORMAT_A8R8G8B8_UNORM)

-      return GL_TRUE;

-

-   return GL_FALSE;

-}

-

-

-

-/**

- * This is used for translating texture border color and the clear

- * color.  For example, the clear color is interpreted according to

- * the renderbuffer's base format.  For example, if clearing a

- * GL_LUMINANCE buffer, ClearColor[0] = luminance and ClearColor[1] =

- * alpha.  Similarly for texture border colors.

- */

-void

-st_translate_color(const GLfloat colorIn[4], GLenum baseFormat,

-                   GLfloat colorOut[4])

-{

-   switch (baseFormat) {

-   case GL_RED:

-      colorOut[0] = colorIn[0];

-      colorOut[1] = 0.0F;

-      colorOut[2] = 0.0F;

-      colorOut[3] = 1.0F;

-      break;

-   case GL_RG:

-      colorOut[0] = colorIn[0];

-      colorOut[1] = colorIn[1];

-      colorOut[2] = 0.0F;

-      colorOut[3] = 1.0F;

-      break;

-   case GL_RGB:

-      colorOut[0] = colorIn[0];

-      colorOut[1] = colorIn[1];

-      colorOut[2] = colorIn[2];

-      colorOut[3] = 1.0F;

-      break;

-   case GL_ALPHA:

-      colorOut[0] = colorOut[1] = colorOut[2] = 0.0;

-      colorOut[3] = colorIn[3];

-      break;

-   case GL_LUMINANCE:

-      colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];

-      colorOut[3] = 1.0;

-      break;

-   case GL_LUMINANCE_ALPHA:

-      colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];

-      colorOut[3] = colorIn[3];

-      break;

-   case GL_INTENSITY:

-      colorOut[0] = colorOut[1] = colorOut[2] = colorOut[3] = colorIn[0];

-      break;

-   default:

-      COPY_4V(colorOut, colorIn);

-   }

-}

+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright (c) 2008-2010 VMware, Inc.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+
+/**
+ * Mesa / Gallium format conversion and format selection code.
+ * \author Brian Paul
+ */
+
+#include "main/imports.h"
+#include "main/context.h"
+#include "main/texstore.h"
+#include "main/image.h"
+#include "main/macros.h"
+#include "main/mfeatures.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_screen.h"
+#include "util/u_format.h"
+#include "st_context.h"
+#include "st_format.h"
+
+
+static GLuint
+format_max_bits(enum pipe_format format)
+{
+   GLuint size = util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 0);
+
+   size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 1));
+   size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 2));
+   size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 3));
+   size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 0));
+   size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1));
+   return size;
+}
+
+
+/**
+ * Return basic GL datatype for the given gallium format.
+ */
+GLenum
+st_format_datatype(enum pipe_format format)
+{
+   const struct util_format_description *desc;
+   int i;
+
+   desc = util_format_description(format);
+   assert(desc);
+
+   /* Find the first non-VOID channel. */
+   for (i = 0; i < 4; i++) {
+       if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
+           break;
+       }
+   }
+
+   if (desc->layout == UTIL_FORMAT_LAYOUT_PLAIN) {
+      if (format == PIPE_FORMAT_B5G5R5A1_UNORM ||
+          format == PIPE_FORMAT_B5G6R5_UNORM) {
+         return GL_UNSIGNED_SHORT;
+      }
+      else if (format == PIPE_FORMAT_R11G11B10_FLOAT ||
+               format == PIPE_FORMAT_R9G9B9E5_FLOAT) {
+         return GL_FLOAT;
+      }
+      else if (format == PIPE_FORMAT_Z24_UNORM_S8_USCALED ||
+               format == PIPE_FORMAT_S8_USCALED_Z24_UNORM ||
+               format == PIPE_FORMAT_Z24X8_UNORM ||
+               format == PIPE_FORMAT_X8Z24_UNORM) {
+         return GL_UNSIGNED_INT_24_8;
+      }
+      else if (format == PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED) {
+         return GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
+      }
+      else {
+         const GLuint size = format_max_bits(format);
+
+         assert(i < 4);
+         if (i == 4)
+            return GL_NONE;
+
+         if (size == 8) {
+            if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)
+               return GL_UNSIGNED_BYTE;
+            else
+               return GL_BYTE;
+         }
+         else if (size == 16) {
+            if (desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT)
+               return GL_HALF_FLOAT;
+            if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)
+               return GL_UNSIGNED_SHORT;
+            else
+               return GL_SHORT;
+         }
+         else if (size <= 32) {
+            if (desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT)
+               return GL_FLOAT;
+            if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)
+               return GL_UNSIGNED_INT;
+            else
+               return GL_INT;
+         }
+         else {
+            assert(size == 64);
+            assert(desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT);
+            return GL_DOUBLE;
+         }
+      }
+   }
+   else if (format == PIPE_FORMAT_UYVY) {
+      return GL_UNSIGNED_SHORT;
+   }
+   else if (format == PIPE_FORMAT_YUYV) {
+      return GL_UNSIGNED_SHORT;
+   }
+   else {
+      /* probably a compressed format, unsupported anyway */
+      return GL_NONE;
+   }
+}
+
+
+/**
+ * Translate Mesa format to Gallium format.
+ */
+enum pipe_format
+st_mesa_format_to_pipe_format(gl_format mesaFormat)
+{
+   switch (mesaFormat) {
+   case MESA_FORMAT_RGBA8888:
+      return PIPE_FORMAT_A8B8G8R8_UNORM;
+   case MESA_FORMAT_RGBA8888_REV:
+      return PIPE_FORMAT_R8G8B8A8_UNORM;
+   case MESA_FORMAT_ARGB8888:
+      return PIPE_FORMAT_B8G8R8A8_UNORM;
+   case MESA_FORMAT_ARGB8888_REV:
+      return PIPE_FORMAT_A8R8G8B8_UNORM;
+   case MESA_FORMAT_XRGB8888:
+      return PIPE_FORMAT_B8G8R8X8_UNORM;
+   case MESA_FORMAT_XRGB8888_REV:
+      return PIPE_FORMAT_X8R8G8B8_UNORM;
+   case MESA_FORMAT_ARGB1555:
+      return PIPE_FORMAT_B5G5R5A1_UNORM;
+   case MESA_FORMAT_ARGB4444:
+      return PIPE_FORMAT_B4G4R4A4_UNORM;
+   case MESA_FORMAT_RGB565:
+      return PIPE_FORMAT_B5G6R5_UNORM;
+   case MESA_FORMAT_RGB332:
+      return PIPE_FORMAT_B2G3R3_UNORM;
+   case MESA_FORMAT_ARGB2101010:
+      return PIPE_FORMAT_B10G10R10A2_UNORM;
+   case MESA_FORMAT_AL44:
+      return PIPE_FORMAT_L4A4_UNORM;
+   case MESA_FORMAT_AL88:
+      return PIPE_FORMAT_L8A8_UNORM;
+   case MESA_FORMAT_AL1616:
+      return PIPE_FORMAT_L16A16_UNORM;
+   case MESA_FORMAT_A8:
+      return PIPE_FORMAT_A8_UNORM;
+   case MESA_FORMAT_A16:
+      return PIPE_FORMAT_A16_UNORM;
+   case MESA_FORMAT_L8:
+      return PIPE_FORMAT_L8_UNORM;
+   case MESA_FORMAT_L16:
+      return PIPE_FORMAT_L16_UNORM;
+   case MESA_FORMAT_I8:
+      return PIPE_FORMAT_I8_UNORM;
+   case MESA_FORMAT_I16:
+      return PIPE_FORMAT_I16_UNORM;
+   case MESA_FORMAT_Z16:
+      return PIPE_FORMAT_Z16_UNORM;
+   case MESA_FORMAT_Z32:
+      return PIPE_FORMAT_Z32_UNORM;
+   case MESA_FORMAT_Z24_S8:
+      return PIPE_FORMAT_S8_USCALED_Z24_UNORM;
+   case MESA_FORMAT_S8_Z24:
+      return PIPE_FORMAT_Z24_UNORM_S8_USCALED;
+   case MESA_FORMAT_Z24_X8:
+      return PIPE_FORMAT_X8Z24_UNORM;
+   case MESA_FORMAT_X8_Z24:
+      return PIPE_FORMAT_Z24X8_UNORM;
+   case MESA_FORMAT_S8:
+      return PIPE_FORMAT_S8_USCALED;
+   case MESA_FORMAT_Z32_FLOAT:
+      return PIPE_FORMAT_Z32_FLOAT;
+   case MESA_FORMAT_Z32_FLOAT_X24S8:
+      return PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED;
+   case MESA_FORMAT_YCBCR:
+      return PIPE_FORMAT_UYVY;
+#if FEATURE_texture_s3tc
+   case MESA_FORMAT_RGB_DXT1:
+      return PIPE_FORMAT_DXT1_RGB;
+   case MESA_FORMAT_RGBA_DXT1:
+      return PIPE_FORMAT_DXT1_RGBA;
+   case MESA_FORMAT_RGBA_DXT3:
+      return PIPE_FORMAT_DXT3_RGBA;
+   case MESA_FORMAT_RGBA_DXT5:
+      return PIPE_FORMAT_DXT5_RGBA;
+#if FEATURE_EXT_texture_sRGB
+   case MESA_FORMAT_SRGB_DXT1:
+      return PIPE_FORMAT_DXT1_SRGB;
+   case MESA_FORMAT_SRGBA_DXT1:
+      return PIPE_FORMAT_DXT1_SRGBA;
+   case MESA_FORMAT_SRGBA_DXT3:
+      return PIPE_FORMAT_DXT3_SRGBA;
+   case MESA_FORMAT_SRGBA_DXT5:
+      return PIPE_FORMAT_DXT5_SRGBA;
+#endif
+#endif
+#if FEATURE_EXT_texture_sRGB
+   case MESA_FORMAT_SLA8:
+      return PIPE_FORMAT_L8A8_SRGB;
+   case MESA_FORMAT_SL8:
+      return PIPE_FORMAT_L8_SRGB;
+   case MESA_FORMAT_SRGB8:
+      return PIPE_FORMAT_R8G8B8_SRGB;
+   case MESA_FORMAT_SRGBA8:
+      return PIPE_FORMAT_A8B8G8R8_SRGB;
+   case MESA_FORMAT_SARGB8:
+      return PIPE_FORMAT_B8G8R8A8_SRGB;
+#endif
+   case MESA_FORMAT_RGBA_FLOAT32:
+      return PIPE_FORMAT_R32G32B32A32_FLOAT;
+   case MESA_FORMAT_RGBA_FLOAT16:
+      return PIPE_FORMAT_R16G16B16A16_FLOAT;
+   case MESA_FORMAT_RGB_FLOAT32:
+      return PIPE_FORMAT_R32G32B32_FLOAT;
+   case MESA_FORMAT_RGB_FLOAT16:
+      return PIPE_FORMAT_R16G16B16_FLOAT;
+   case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
+      return PIPE_FORMAT_L32A32_FLOAT;
+   case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
+      return PIPE_FORMAT_L16A16_FLOAT;
+   case MESA_FORMAT_LUMINANCE_FLOAT32:
+      return PIPE_FORMAT_L32_FLOAT;
+   case MESA_FORMAT_LUMINANCE_FLOAT16:
+      return PIPE_FORMAT_L16_FLOAT;
+   case MESA_FORMAT_ALPHA_FLOAT32:
+      return PIPE_FORMAT_A32_FLOAT;
+   case MESA_FORMAT_ALPHA_FLOAT16:
+      return PIPE_FORMAT_A16_FLOAT;
+   case MESA_FORMAT_INTENSITY_FLOAT32:
+      return PIPE_FORMAT_I32_FLOAT;
+   case MESA_FORMAT_INTENSITY_FLOAT16:
+      return PIPE_FORMAT_I16_FLOAT;
+   case MESA_FORMAT_R_FLOAT32:
+      return PIPE_FORMAT_R32_FLOAT;
+   case MESA_FORMAT_R_FLOAT16:
+      return PIPE_FORMAT_R16_FLOAT;
+   case MESA_FORMAT_RG_FLOAT32:
+      return PIPE_FORMAT_R32G32_FLOAT;
+   case MESA_FORMAT_RG_FLOAT16:
+      return PIPE_FORMAT_R16G16_FLOAT;
+
+   case MESA_FORMAT_R8:
+      return PIPE_FORMAT_R8_UNORM;
+   case MESA_FORMAT_R16:
+      return PIPE_FORMAT_R16_UNORM;
+   case MESA_FORMAT_RG88:
+      return PIPE_FORMAT_R8G8_UNORM;
+   case MESA_FORMAT_RG1616:
+      return PIPE_FORMAT_R16G16_UNORM;
+   case MESA_FORMAT_RGBA_16:
+      return PIPE_FORMAT_R16G16B16A16_UNORM;
+
+   /* signed int formats */
+   case MESA_FORMAT_RGBA_INT8:
+      return PIPE_FORMAT_R8G8B8A8_SSCALED;
+   case MESA_FORMAT_RGBA_INT16:
+      return PIPE_FORMAT_R16G16B16A16_SSCALED;
+   case MESA_FORMAT_RGBA_INT32:
+      return PIPE_FORMAT_R32G32B32A32_SSCALED;
+
+   /* unsigned int formats */
+   case MESA_FORMAT_RGBA_UINT8:
+      return PIPE_FORMAT_R8G8B8A8_USCALED;
+   case MESA_FORMAT_RGBA_UINT16:
+      return PIPE_FORMAT_R16G16B16A16_USCALED;
+   case MESA_FORMAT_RGBA_UINT32:
+      return PIPE_FORMAT_R32G32B32A32_USCALED;
+
+   case MESA_FORMAT_RED_RGTC1:
+      return PIPE_FORMAT_RGTC1_UNORM;
+   case MESA_FORMAT_SIGNED_RED_RGTC1:
+      return PIPE_FORMAT_RGTC1_SNORM;
+   case MESA_FORMAT_RG_RGTC2:
+      return PIPE_FORMAT_RGTC2_UNORM;
+   case MESA_FORMAT_SIGNED_RG_RGTC2:
+      return PIPE_FORMAT_RGTC2_SNORM;
+
+   case MESA_FORMAT_L_LATC1:
+      return PIPE_FORMAT_LATC1_UNORM;
+   case MESA_FORMAT_SIGNED_L_LATC1:
+      return PIPE_FORMAT_LATC1_SNORM;
+   case MESA_FORMAT_LA_LATC2:
+      return PIPE_FORMAT_LATC2_UNORM;
+   case MESA_FORMAT_SIGNED_LA_LATC2:
+      return PIPE_FORMAT_LATC2_SNORM;
+
+   /* signed normalized formats */
+   case MESA_FORMAT_SIGNED_R8:
+      return PIPE_FORMAT_R8_SNORM;
+   case MESA_FORMAT_SIGNED_RG88_REV:
+      return PIPE_FORMAT_R8G8_SNORM;
+   case MESA_FORMAT_SIGNED_RGBA8888_REV:
+      return PIPE_FORMAT_R8G8B8A8_SNORM;
+
+   case MESA_FORMAT_SIGNED_A8:
+      return PIPE_FORMAT_A8_SNORM;
+   case MESA_FORMAT_SIGNED_L8:
+      return PIPE_FORMAT_L8_SNORM;
+   case MESA_FORMAT_SIGNED_AL88:
+      return PIPE_FORMAT_L8A8_SNORM;
+   case MESA_FORMAT_SIGNED_I8:
+      return PIPE_FORMAT_I8_SNORM;
+
+   case MESA_FORMAT_SIGNED_R16:
+      return PIPE_FORMAT_R16_SNORM;
+   case MESA_FORMAT_SIGNED_GR1616:
+      return PIPE_FORMAT_R16G16_SNORM;
+   case MESA_FORMAT_SIGNED_RGBA_16:
+      return PIPE_FORMAT_R16G16B16A16_SNORM;
+
+   case MESA_FORMAT_SIGNED_A16:
+      return PIPE_FORMAT_A16_SNORM;
+   case MESA_FORMAT_SIGNED_L16:
+      return PIPE_FORMAT_L16_SNORM;
+   case MESA_FORMAT_SIGNED_AL1616:
+      return PIPE_FORMAT_L16A16_SNORM;
+   case MESA_FORMAT_SIGNED_I16:
+      return PIPE_FORMAT_I16_SNORM;
+
+   case MESA_FORMAT_RGB9_E5_FLOAT:
+      return PIPE_FORMAT_R9G9B9E5_FLOAT;
+   case MESA_FORMAT_R11_G11_B10_FLOAT:
+      return PIPE_FORMAT_R11G11B10_FLOAT;
+
+   default:
+      assert(0);
+      return PIPE_FORMAT_NONE;
+   }
+}
+
+
+/**
+ * Translate Gallium format to Mesa format.
+ */
+gl_format
+st_pipe_format_to_mesa_format(enum pipe_format format)
+{
+   switch (format) {
+   case PIPE_FORMAT_A8B8G8R8_UNORM:
+      return MESA_FORMAT_RGBA8888;
+   case PIPE_FORMAT_R8G8B8A8_UNORM:
+      return MESA_FORMAT_RGBA8888_REV;
+   case PIPE_FORMAT_B8G8R8A8_UNORM:
+      return MESA_FORMAT_ARGB8888;
+   case PIPE_FORMAT_A8R8G8B8_UNORM:
+      return MESA_FORMAT_ARGB8888_REV;
+   case PIPE_FORMAT_B8G8R8X8_UNORM:
+      return MESA_FORMAT_XRGB8888;
+   case PIPE_FORMAT_X8R8G8B8_UNORM:
+      return MESA_FORMAT_XRGB8888_REV;
+   case PIPE_FORMAT_B5G5R5A1_UNORM:
+      return MESA_FORMAT_ARGB1555;
+   case PIPE_FORMAT_B4G4R4A4_UNORM:
+      return MESA_FORMAT_ARGB4444;
+   case PIPE_FORMAT_B5G6R5_UNORM:
+      return MESA_FORMAT_RGB565;
+   case PIPE_FORMAT_B2G3R3_UNORM:
+      return MESA_FORMAT_RGB332;
+   case PIPE_FORMAT_B10G10R10A2_UNORM:
+      return MESA_FORMAT_ARGB2101010;
+   case PIPE_FORMAT_L4A4_UNORM:
+      return MESA_FORMAT_AL44;
+   case PIPE_FORMAT_L8A8_UNORM:
+      return MESA_FORMAT_AL88;
+   case PIPE_FORMAT_L16A16_UNORM:
+      return MESA_FORMAT_AL1616;
+   case PIPE_FORMAT_A8_UNORM:
+      return MESA_FORMAT_A8;
+   case PIPE_FORMAT_A16_UNORM:
+      return MESA_FORMAT_A16;
+   case PIPE_FORMAT_L8_UNORM:
+      return MESA_FORMAT_L8;
+   case PIPE_FORMAT_L16_UNORM:
+      return MESA_FORMAT_L16;
+   case PIPE_FORMAT_I8_UNORM:
+      return MESA_FORMAT_I8;
+   case PIPE_FORMAT_I16_UNORM:
+      return MESA_FORMAT_I16;
+   case PIPE_FORMAT_S8_USCALED:
+      return MESA_FORMAT_S8;
+
+   case PIPE_FORMAT_R16G16B16A16_UNORM:
+      return MESA_FORMAT_RGBA_16;
+
+   case PIPE_FORMAT_Z16_UNORM:
+      return MESA_FORMAT_Z16;
+   case PIPE_FORMAT_Z32_UNORM:
+      return MESA_FORMAT_Z32;
+   case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
+      return MESA_FORMAT_Z24_S8;
+   case PIPE_FORMAT_X8Z24_UNORM:
+      return MESA_FORMAT_Z24_X8;
+   case PIPE_FORMAT_Z24X8_UNORM:
+      return MESA_FORMAT_X8_Z24;
+   case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
+      return MESA_FORMAT_S8_Z24;
+   case PIPE_FORMAT_Z32_FLOAT:
+      return MESA_FORMAT_Z32_FLOAT;
+   case PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED:
+      return MESA_FORMAT_Z32_FLOAT_X24S8;
+
+   case PIPE_FORMAT_UYVY:
+      return MESA_FORMAT_YCBCR;
+   case PIPE_FORMAT_YUYV:
+      return MESA_FORMAT_YCBCR_REV;
+
+#if FEATURE_texture_s3tc
+   case PIPE_FORMAT_DXT1_RGB:
+      return MESA_FORMAT_RGB_DXT1;
+   case PIPE_FORMAT_DXT1_RGBA:
+      return MESA_FORMAT_RGBA_DXT1;
+   case PIPE_FORMAT_DXT3_RGBA:
+      return MESA_FORMAT_RGBA_DXT3;
+   case PIPE_FORMAT_DXT5_RGBA:
+      return MESA_FORMAT_RGBA_DXT5;
+#if FEATURE_EXT_texture_sRGB
+   case PIPE_FORMAT_DXT1_SRGB:
+      return MESA_FORMAT_SRGB_DXT1;
+   case PIPE_FORMAT_DXT1_SRGBA:
+      return MESA_FORMAT_SRGBA_DXT1;
+   case PIPE_FORMAT_DXT3_SRGBA:
+      return MESA_FORMAT_SRGBA_DXT3;
+   case PIPE_FORMAT_DXT5_SRGBA:
+      return MESA_FORMAT_SRGBA_DXT5;
+#endif
+#endif
+
+#if FEATURE_EXT_texture_sRGB
+   case PIPE_FORMAT_L8A8_SRGB:
+      return MESA_FORMAT_SLA8;
+   case PIPE_FORMAT_L8_SRGB:
+      return MESA_FORMAT_SL8;
+   case PIPE_FORMAT_R8G8B8_SRGB:
+      return MESA_FORMAT_SRGB8;
+   case PIPE_FORMAT_A8B8G8R8_SRGB:
+      return MESA_FORMAT_SRGBA8;
+   case PIPE_FORMAT_B8G8R8A8_SRGB:
+      return MESA_FORMAT_SARGB8;
+#endif
+   case PIPE_FORMAT_R32G32B32A32_FLOAT:
+      return MESA_FORMAT_RGBA_FLOAT32;
+   case PIPE_FORMAT_R16G16B16A16_FLOAT:
+      return MESA_FORMAT_RGBA_FLOAT16;
+   case PIPE_FORMAT_R32G32B32_FLOAT:
+      return MESA_FORMAT_RGB_FLOAT32;
+   case PIPE_FORMAT_R16G16B16_FLOAT:
+      return MESA_FORMAT_RGB_FLOAT16;
+   case PIPE_FORMAT_L32A32_FLOAT:
+      return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32;
+   case PIPE_FORMAT_L16A16_FLOAT:
+      return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16;
+   case PIPE_FORMAT_L32_FLOAT:
+      return MESA_FORMAT_LUMINANCE_FLOAT32;
+   case PIPE_FORMAT_L16_FLOAT:
+      return MESA_FORMAT_LUMINANCE_FLOAT16;
+   case PIPE_FORMAT_A32_FLOAT:
+      return MESA_FORMAT_ALPHA_FLOAT32;
+   case PIPE_FORMAT_A16_FLOAT:
+      return MESA_FORMAT_ALPHA_FLOAT16;
+   case PIPE_FORMAT_I32_FLOAT:
+      return MESA_FORMAT_INTENSITY_FLOAT32;
+   case PIPE_FORMAT_I16_FLOAT:
+      return MESA_FORMAT_INTENSITY_FLOAT16;
+   case PIPE_FORMAT_R32_FLOAT:
+      return MESA_FORMAT_R_FLOAT32;
+   case PIPE_FORMAT_R16_FLOAT:
+      return MESA_FORMAT_R_FLOAT16;
+   case PIPE_FORMAT_R32G32_FLOAT:
+      return MESA_FORMAT_RG_FLOAT32;
+   case PIPE_FORMAT_R16G16_FLOAT:
+      return MESA_FORMAT_RG_FLOAT16;
+
+   case PIPE_FORMAT_R8_UNORM:
+      return MESA_FORMAT_R8;
+   case PIPE_FORMAT_R16_UNORM:
+      return MESA_FORMAT_R16;
+   case PIPE_FORMAT_R8G8_UNORM:
+      return MESA_FORMAT_RG88;
+   case PIPE_FORMAT_R16G16_UNORM:
+      return MESA_FORMAT_RG1616;
+
+   /* signed int formats */
+   case PIPE_FORMAT_R8G8B8A8_SSCALED:
+      return MESA_FORMAT_RGBA_INT8;
+   case PIPE_FORMAT_R16G16B16A16_SSCALED:
+      return MESA_FORMAT_RGBA_INT16;
+   case PIPE_FORMAT_R32G32B32A32_SSCALED:
+      return MESA_FORMAT_RGBA_INT32;
+
+   /* unsigned int formats */
+   case PIPE_FORMAT_R8G8B8A8_USCALED:
+      return MESA_FORMAT_RGBA_UINT8;
+   case PIPE_FORMAT_R16G16B16A16_USCALED:
+      return MESA_FORMAT_RGBA_UINT16;
+   case PIPE_FORMAT_R32G32B32A32_USCALED:
+      return MESA_FORMAT_RGBA_UINT32;
+
+   case PIPE_FORMAT_RGTC1_UNORM:
+      return MESA_FORMAT_RED_RGTC1;
+   case PIPE_FORMAT_RGTC1_SNORM:
+      return MESA_FORMAT_SIGNED_RED_RGTC1;
+   case PIPE_FORMAT_RGTC2_UNORM:
+      return MESA_FORMAT_RG_RGTC2;
+   case PIPE_FORMAT_RGTC2_SNORM:
+      return MESA_FORMAT_SIGNED_RG_RGTC2;
+
+   case PIPE_FORMAT_LATC1_UNORM:
+      return MESA_FORMAT_L_LATC1;
+   case PIPE_FORMAT_LATC1_SNORM:
+      return MESA_FORMAT_SIGNED_L_LATC1;
+   case PIPE_FORMAT_LATC2_UNORM:
+      return MESA_FORMAT_LA_LATC2;
+   case PIPE_FORMAT_LATC2_SNORM:
+      return MESA_FORMAT_SIGNED_LA_LATC2;
+
+   /* signed normalized formats */
+   case PIPE_FORMAT_R8_SNORM:
+      return MESA_FORMAT_SIGNED_R8;
+   case PIPE_FORMAT_R8G8_SNORM:
+      return MESA_FORMAT_SIGNED_RG88_REV;
+   case PIPE_FORMAT_R8G8B8A8_SNORM:
+      return MESA_FORMAT_SIGNED_RGBA8888_REV;
+
+   case PIPE_FORMAT_A8_SNORM:
+      return MESA_FORMAT_SIGNED_A8;
+   case PIPE_FORMAT_L8_SNORM:
+      return MESA_FORMAT_SIGNED_L8;
+   case PIPE_FORMAT_L8A8_SNORM:
+      return MESA_FORMAT_SIGNED_AL88;
+   case PIPE_FORMAT_I8_SNORM:
+      return MESA_FORMAT_SIGNED_I8;
+
+   case PIPE_FORMAT_R16_SNORM:
+      return MESA_FORMAT_SIGNED_R16;
+   case PIPE_FORMAT_R16G16_SNORM:
+      return MESA_FORMAT_SIGNED_GR1616;
+   case PIPE_FORMAT_R16G16B16A16_SNORM:
+      return MESA_FORMAT_SIGNED_RGBA_16;
+
+   case PIPE_FORMAT_A16_SNORM:
+      return MESA_FORMAT_SIGNED_A16;
+   case PIPE_FORMAT_L16_SNORM:
+      return MESA_FORMAT_SIGNED_L16;
+   case PIPE_FORMAT_L16A16_SNORM:
+      return MESA_FORMAT_SIGNED_AL1616;
+   case PIPE_FORMAT_I16_SNORM:
+      return MESA_FORMAT_SIGNED_I16;
+
+   case PIPE_FORMAT_R9G9B9E5_FLOAT:
+      return MESA_FORMAT_RGB9_E5_FLOAT;
+   case PIPE_FORMAT_R11G11B10_FLOAT:
+      return MESA_FORMAT_R11_G11_B10_FLOAT;
+
+   default:
+      assert(0);
+      return MESA_FORMAT_NONE;
+   }
+}
+
+
+/**
+ * Map GL texture formats to Gallium pipe formats.
+ */
+struct format_mapping
+{
+   GLenum glFormats[18];       /**< list of GLenum formats, 0-terminated */
+   enum pipe_format pipeFormats[10]; /**< list of pipe formats, 0-terminated */
+};
+
+
+#define DEFAULT_RGBA_FORMATS \
+      PIPE_FORMAT_B8G8R8A8_UNORM, \
+      PIPE_FORMAT_A8R8G8B8_UNORM, \
+      PIPE_FORMAT_A8B8G8R8_UNORM, \
+      PIPE_FORMAT_B5G6R5_UNORM, \
+      0
+
+#define DEFAULT_RGB_FORMATS \
+      PIPE_FORMAT_B8G8R8X8_UNORM, \
+      PIPE_FORMAT_X8R8G8B8_UNORM, \
+      PIPE_FORMAT_X8B8G8R8_UNORM, \
+      PIPE_FORMAT_B8G8R8A8_UNORM, \
+      PIPE_FORMAT_A8R8G8B8_UNORM, \
+      PIPE_FORMAT_A8B8G8R8_UNORM, \
+      PIPE_FORMAT_B5G6R5_UNORM, \
+      0
+
+#define DEFAULT_SRGBA_FORMATS \
+      PIPE_FORMAT_B8G8R8A8_SRGB, \
+      PIPE_FORMAT_A8R8G8B8_SRGB, \
+      PIPE_FORMAT_A8B8G8R8_SRGB, \
+      0
+
+#define DEFAULT_DEPTH_FORMATS \
+      PIPE_FORMAT_Z24X8_UNORM, \
+      PIPE_FORMAT_X8Z24_UNORM, \
+      PIPE_FORMAT_Z16_UNORM, \
+      PIPE_FORMAT_Z24_UNORM_S8_USCALED, \
+      PIPE_FORMAT_S8_USCALED_Z24_UNORM, \
+      0
+
+/**
+ * This table maps OpenGL texture format enums to Gallium pipe_format enums.
+ * Multiple GL enums might map to multiple pipe_formats.
+ * The first pipe format in the list that's supported is the one that's chosen.
+ */
+static const struct format_mapping format_map[] = {
+   /* Basic RGB, RGBA formats */
+   {
+      { GL_RGB10, GL_RGB10_A2, 0 },
+      { PIPE_FORMAT_B10G10R10A2_UNORM, DEFAULT_RGBA_FORMATS }
+   },
+   {
+      { 4, GL_RGBA, GL_RGBA8, 0 },
+      { PIPE_FORMAT_R8G8B8A8_UNORM, DEFAULT_RGBA_FORMATS }
+   },
+   {
+      { GL_BGRA, 0 },
+      { PIPE_FORMAT_B8G8R8A8_UNORM, DEFAULT_RGBA_FORMATS }
+   },
+   {
+      { 3, GL_RGB, GL_RGB8, 0 },
+      { DEFAULT_RGB_FORMATS }
+   },
+   {
+      { GL_RGB12, GL_RGB16, GL_RGBA12, GL_RGBA16, 0 },
+      { PIPE_FORMAT_R16G16B16A16_UNORM, DEFAULT_RGBA_FORMATS }
+   },
+   {
+      { GL_RGBA4, GL_RGBA2, 0 },
+      { PIPE_FORMAT_B4G4R4A4_UNORM, DEFAULT_RGBA_FORMATS }
+   },
+   {
+      { GL_RGB5_A1, 0 },
+      { PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGBA_FORMATS }
+   },
+   {
+      { GL_R3_G3_B2, 0 },
+      { PIPE_FORMAT_B2G3R3_UNORM, PIPE_FORMAT_B5G6R5_UNORM,
+        PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGBA_FORMATS }
+   },
+   {
+      { GL_RGB5, GL_RGB4 },
+      { PIPE_FORMAT_B5G6R5_UNORM, PIPE_FORMAT_B5G5R5A1_UNORM,
+        DEFAULT_RGBA_FORMATS }
+   },
+
+   /* basic Alpha formats */
+   {
+      { GL_ALPHA12, GL_ALPHA16, 0 },
+      { PIPE_FORMAT_A16_UNORM, PIPE_FORMAT_A8_UNORM,
+        DEFAULT_RGBA_FORMATS }
+   },
+   {
+      { GL_ALPHA, GL_ALPHA4, GL_ALPHA8, GL_COMPRESSED_ALPHA, 0 },
+      { PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS }
+   },
+
+   /* basic Luminance formats */
+   {
+      { GL_LUMINANCE12, GL_LUMINANCE16, 0 },
+      { PIPE_FORMAT_L16_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
+   },
+   {
+      { 1, GL_LUMINANCE, GL_LUMINANCE4, GL_LUMINANCE8, 0 },
+      { PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
+   },
+
+   /* basic Luminance/Alpha formats */
+   {
+      { GL_LUMINANCE12_ALPHA4, GL_LUMINANCE12_ALPHA12,
+        GL_LUMINANCE16_ALPHA16, 0},
+      { PIPE_FORMAT_L16A16_UNORM, PIPE_FORMAT_L8A8_UNORM,
+        DEFAULT_RGBA_FORMATS }
+   },
+   {
+      { 2, GL_LUMINANCE_ALPHA, GL_LUMINANCE6_ALPHA2, GL_LUMINANCE8_ALPHA8, 0 },
+      { PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
+   },
+   {
+      { GL_LUMINANCE4_ALPHA4, 0 },
+      { PIPE_FORMAT_L4A4_UNORM, PIPE_FORMAT_L8A8_UNORM,
+        DEFAULT_RGBA_FORMATS }
+   },
+
+   /* basic Intensity formats */
+   {
+      { GL_INTENSITY12, GL_INTENSITY16, 0 },
+      { PIPE_FORMAT_I16_UNORM, PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
+   },
+   {
+      { GL_INTENSITY, GL_INTENSITY4, GL_INTENSITY8,
+        GL_COMPRESSED_INTENSITY, 0 },
+      { PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
+   },
+
+   /* YCbCr */
+   {
+      { GL_YCBCR_MESA, 0 },
+      { PIPE_FORMAT_UYVY, PIPE_FORMAT_YUYV, 0 }
+   },
+
+   /* compressed formats */ /* XXX PIPE_BIND_SAMPLER_VIEW only */
+   {
+      { GL_COMPRESSED_RGB, 0 },
+      { PIPE_FORMAT_DXT1_RGB, DEFAULT_RGB_FORMATS }
+   },
+   {
+      { GL_COMPRESSED_RGBA, 0 },
+      { PIPE_FORMAT_DXT5_RGBA, DEFAULT_RGBA_FORMATS }
+   },
+   {
+      { GL_RGB_S3TC, GL_RGB4_S3TC, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 0 },
+      { PIPE_FORMAT_DXT1_RGB, 0 }
+   },
+   {
+      { GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 0 },
+      { PIPE_FORMAT_DXT1_RGBA, 0 }
+   },
+   {
+      { GL_RGBA_S3TC, GL_RGBA4_S3TC, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, 0 },
+      { PIPE_FORMAT_DXT3_RGBA, 0 }
+   },
+   {
+      { GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, 0 },
+      { PIPE_FORMAT_DXT5_RGBA, 0 }
+   },
+
+#if 0
+   {
+      { GL_COMPRESSED_RGB_FXT1_3DFX, 0 },
+      { PIPE_FORMAT_RGB_FXT1, 0 }
+   },
+   {
+      { GL_COMPRESSED_RGBA_FXT1_3DFX, 0 },
+      { PIPE_FORMAT_RGBA_FXT1, 0 }
+   },
+#endif
+
+   /* Depth formats */
+   {
+      { GL_DEPTH_COMPONENT16, 0 },
+      { PIPE_FORMAT_Z16_UNORM, DEFAULT_DEPTH_FORMATS }
+   },
+   {
+      { GL_DEPTH_COMPONENT24, 0 },
+      { PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
+        DEFAULT_DEPTH_FORMATS }
+   },
+   {
+      { GL_DEPTH_COMPONENT32, 0 },
+      { PIPE_FORMAT_Z32_UNORM, DEFAULT_DEPTH_FORMATS }
+   },
+   {
+      { GL_DEPTH_COMPONENT, 0 },
+      { DEFAULT_DEPTH_FORMATS }
+   },
+   {
+      { GL_DEPTH_COMPONENT32F, 0 },
+      { PIPE_FORMAT_Z32_FLOAT, 0 }
+   },
+
+   /* stencil formats */
+   {
+      { GL_STENCIL_INDEX, GL_STENCIL_INDEX1_EXT, GL_STENCIL_INDEX4_EXT,
+        GL_STENCIL_INDEX8_EXT, GL_STENCIL_INDEX16_EXT, 0 },
+      {
+         PIPE_FORMAT_S8_USCALED, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
+         PIPE_FORMAT_S8_USCALED_Z24_UNORM, 0
+      }
+   },
+
+   /* Depth / Stencil formats */
+   {
+      { GL_DEPTH_STENCIL_EXT, GL_DEPTH24_STENCIL8_EXT, 0 },
+      { PIPE_FORMAT_Z24_UNORM_S8_USCALED, PIPE_FORMAT_S8_USCALED_Z24_UNORM, 0 }
+   },
+   {
+      { GL_DEPTH32F_STENCIL8, 0 },
+      { PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED, 0 }
+   },
+
+   /* sRGB formats */
+   {
+      { GL_SRGB_EXT, GL_SRGB8_EXT, GL_SRGB_ALPHA_EXT, GL_SRGB8_ALPHA8_EXT, 0 },
+      { DEFAULT_SRGBA_FORMATS }
+   },
+   {
+      { GL_COMPRESSED_SRGB_EXT, GL_COMPRESSED_SRGB_S3TC_DXT1_EXT, 0 },
+      { PIPE_FORMAT_DXT1_SRGB, DEFAULT_SRGBA_FORMATS }
+   },
+   {
+      { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT, 0 },
+      { PIPE_FORMAT_DXT1_SRGBA, 0 }
+   },
+   {
+      { GL_COMPRESSED_SRGB_ALPHA_EXT,
+        GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT, 0 },
+      { PIPE_FORMAT_DXT3_SRGBA, DEFAULT_SRGBA_FORMATS }
+   },
+   {
+      { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT, 0 },
+      { PIPE_FORMAT_DXT5_SRGBA, 0 }
+   },
+   {
+      { GL_SLUMINANCE_ALPHA_EXT, GL_SLUMINANCE8_ALPHA8_EXT,
+        GL_COMPRESSED_SLUMINANCE_EXT, GL_COMPRESSED_SLUMINANCE_ALPHA_EXT, 0 },
+      { PIPE_FORMAT_L8A8_SRGB, DEFAULT_SRGBA_FORMATS }
+   },
+   {
+      { GL_SLUMINANCE_EXT, GL_SLUMINANCE8_EXT, 0 },
+      { PIPE_FORMAT_L8_SRGB, DEFAULT_SRGBA_FORMATS }
+   },
+
+   /* 16-bit float formats */
+   {
+      { GL_RGBA16F_ARB, 0 },
+      { PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
+   },
+   {
+      { GL_RGB16F_ARB, 0 },
+      { PIPE_FORMAT_R16G16B16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
+        PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
+   },
+   {
+      { GL_LUMINANCE_ALPHA16F_ARB, 0 },
+      { PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
+        PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
+   },
+   {
+      { GL_ALPHA16F_ARB, 0 },
+      { PIPE_FORMAT_A16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
+        PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
+        PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
+   },
+   {
+      { GL_INTENSITY16F_ARB, 0 },
+      { PIPE_FORMAT_I16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
+        PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
+        PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
+   },
+   {
+      { GL_LUMINANCE16F_ARB, 0 },
+      { PIPE_FORMAT_L16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
+        PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
+        PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
+   },
+   {
+      { GL_R16F, 0 },
+      { PIPE_FORMAT_R16_FLOAT, PIPE_FORMAT_R16G16_FLOAT,
+        PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
+        PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
+   },
+   {
+      { GL_RG16F, 0 },
+      { PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
+        PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
+   },
+
+   /* 32-bit float formats */
+   {
+      { GL_RGBA32F_ARB, 0 },
+      { PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
+   },
+   {
+      { GL_RGB32F_ARB, 0 },
+      { PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
+        PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
+   },
+   {
+      { GL_LUMINANCE_ALPHA32F_ARB, 0 },
+      { PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
+        PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
+   },
+   {
+      { GL_ALPHA32F_ARB, 0 },
+      { PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
+        PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_A16_FLOAT,
+        PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
+   },
+   {
+      { GL_INTENSITY32F_ARB, 0 },
+      { PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
+        PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_I16_FLOAT,
+        PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
+   },
+   {
+      { GL_LUMINANCE32F_ARB, 0 },
+      { PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
+        PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_L16_FLOAT,
+        PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
+   },
+   {
+      { GL_R32F, 0 },
+      { PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R32G32_FLOAT,
+        PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16_FLOAT,
+        PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
+   },
+   {
+      { GL_RG32F, 0 },
+      { PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
+        PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
+   },
+
+   /* R, RG formats */
+   {
+      { GL_RED, GL_R8, 0 },
+      { PIPE_FORMAT_R8_UNORM, 0 }
+   },
+   {
+      { GL_RG, GL_RG8, 0 },
+      { PIPE_FORMAT_R8G8_UNORM, 0 }
+   },
+   {
+      { GL_R16, 0 },
+      { PIPE_FORMAT_R16_UNORM, 0 }
+   },
+   {
+      { GL_RG16, 0 },
+      { PIPE_FORMAT_R16G16_UNORM, 0 }
+   },
+
+   /* compressed R, RG formats */
+   {
+      { GL_COMPRESSED_RED, GL_COMPRESSED_RED_RGTC1, 0 },
+      { PIPE_FORMAT_RGTC1_UNORM, PIPE_FORMAT_R8_UNORM, 0 }
+   },
+   {
+      { GL_COMPRESSED_SIGNED_RED_RGTC1, 0 },
+      { PIPE_FORMAT_RGTC1_SNORM, 0 }
+   },
+   {
+      { GL_COMPRESSED_RG, GL_COMPRESSED_RG_RGTC2, 0 },
+      { PIPE_FORMAT_RGTC2_UNORM, PIPE_FORMAT_R8G8_UNORM, 0 }
+   },
+   {
+      { GL_COMPRESSED_SIGNED_RG_RGTC2, 0 },
+      { PIPE_FORMAT_RGTC2_SNORM, 0 }
+   },
+   {
+      { GL_COMPRESSED_LUMINANCE, GL_COMPRESSED_LUMINANCE_LATC1_EXT, 0 },
+      { PIPE_FORMAT_LATC1_UNORM, PIPE_FORMAT_L8_UNORM, 0 }
+   },
+   {
+      { GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT, 0 },
+      { PIPE_FORMAT_LATC1_SNORM, 0 }
+   },
+   {
+      { GL_COMPRESSED_LUMINANCE_ALPHA, GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT,
+        GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI, 0 },
+      { PIPE_FORMAT_LATC2_UNORM, PIPE_FORMAT_L8A8_UNORM, 0 }
+   },
+   {
+      { GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT, 0 },
+      { PIPE_FORMAT_LATC2_SNORM, 0 }
+   },
+
+   /* signed/unsigned integer formats.
+    * XXX Mesa only has formats for RGBA signed/unsigned integer formats.
+    * If/when new formats are added this code should be updated.
+    */
+   {
+      { GL_RED_INTEGER_EXT,
+        GL_GREEN_INTEGER_EXT,
+        GL_BLUE_INTEGER_EXT,
+        GL_ALPHA_INTEGER_EXT,
+        GL_RGB_INTEGER_EXT,
+        GL_RGBA_INTEGER_EXT,
+        GL_BGR_INTEGER_EXT,
+        GL_BGRA_INTEGER_EXT,
+        GL_LUMINANCE_INTEGER_EXT,
+        GL_LUMINANCE_ALPHA_INTEGER_EXT,
+        GL_RGBA8I_EXT,
+        GL_RGB8I_EXT,
+        GL_ALPHA8I_EXT,
+        GL_INTENSITY8I_EXT,
+        GL_LUMINANCE8I_EXT,
+        GL_LUMINANCE_ALPHA8I_EXT, 0 },
+      { PIPE_FORMAT_R8G8B8A8_SSCALED, 0 }
+   },
+   {
+      {
+         GL_RGBA16I_EXT,
+         GL_RGB16I_EXT,
+         GL_ALPHA16I_EXT,
+         GL_INTENSITY16I_EXT,
+         GL_LUMINANCE16I_EXT,
+         GL_LUMINANCE_ALPHA16I_EXT, 0 },
+      { PIPE_FORMAT_R16G16B16A16_SSCALED, 0 },
+   },
+   {
+      {
+         GL_RGBA32I_EXT,
+         GL_RGB32I_EXT,
+         GL_ALPHA32I_EXT,
+         GL_INTENSITY32I_EXT,
+         GL_LUMINANCE32I_EXT,
+         GL_LUMINANCE_ALPHA32I_EXT, 0 },
+      { PIPE_FORMAT_R32G32B32A32_SSCALED, 0 }
+   },
+   {
+      {
+         GL_RGBA8UI_EXT,
+         GL_RGB8UI_EXT,
+         GL_ALPHA8UI_EXT,
+         GL_INTENSITY8UI_EXT,
+         GL_LUMINANCE8UI_EXT,
+         GL_LUMINANCE_ALPHA8UI_EXT, 0 },
+      { PIPE_FORMAT_R8G8B8A8_USCALED, 0 }
+   },
+   {
+      {
+         GL_RGBA16UI_EXT,
+         GL_RGB16UI_EXT,
+         GL_ALPHA16UI_EXT,
+         GL_INTENSITY16UI_EXT,
+         GL_LUMINANCE16UI_EXT,
+         GL_LUMINANCE_ALPHA16UI_EXT, 0 },
+      { PIPE_FORMAT_R16G16B16A16_USCALED, 0 }
+   },
+   {
+      {
+         GL_RGBA32UI_EXT,
+         GL_RGB32UI_EXT,
+         GL_ALPHA32UI_EXT,
+         GL_INTENSITY32UI_EXT,
+         GL_LUMINANCE32UI_EXT,
+         GL_LUMINANCE_ALPHA32UI_EXT, 0 },
+      { PIPE_FORMAT_R32G32B32A32_USCALED, 0 }
+   },
+
+   /* signed normalized formats */
+   {
+      { GL_RED_SNORM, GL_R8_SNORM, 0 },
+      { PIPE_FORMAT_R8_SNORM, PIPE_FORMAT_R8G8_SNORM,
+        PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
+   },
+   {
+      { GL_R16_SNORM, 0 },
+      { PIPE_FORMAT_R16_SNORM,
+        PIPE_FORMAT_R16G16_SNORM,
+        PIPE_FORMAT_R16G16B16A16_SNORM,
+        PIPE_FORMAT_R8_SNORM,
+        PIPE_FORMAT_R8G8_SNORM,
+        PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
+   },
+   {
+      { GL_RG_SNORM, GL_RG8_SNORM, 0 },
+      { PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
+   },
+   {
+      { GL_RG16_SNORM, 0 },
+      { PIPE_FORMAT_R16G16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
+        PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
+   },
+   {
+      { GL_RGB_SNORM, GL_RGB8_SNORM, GL_RGBA_SNORM, GL_RGBA8_SNORM, 0 },
+      { PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
+   },
+   {
+      { GL_RGB16_SNORM, GL_RGBA16_SNORM, 0 },
+      { PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
+   },
+   {
+      { GL_ALPHA_SNORM, GL_ALPHA8_SNORM, 0 },
+      { PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
+   },
+   {
+      { GL_ALPHA16_SNORM, 0 },
+      { PIPE_FORMAT_A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
+        PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
+   },
+   {
+      { GL_LUMINANCE_SNORM, GL_LUMINANCE8_SNORM, 0 },
+      { PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
+   },
+   {
+      { GL_LUMINANCE16_SNORM, 0 },
+      { PIPE_FORMAT_L16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
+        PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
+   },
+   {
+      { GL_LUMINANCE_ALPHA_SNORM, GL_LUMINANCE8_ALPHA8_SNORM, 0 },
+      { PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
+   },
+   {
+      { GL_LUMINANCE16_ALPHA16_SNORM, 0 },
+      { PIPE_FORMAT_L16A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
+        PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
+   },
+   {
+      { GL_INTENSITY_SNORM, GL_INTENSITY8_SNORM, 0 },
+      { PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
+   },
+   {
+      { GL_INTENSITY16_SNORM, 0 },
+      { PIPE_FORMAT_I16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
+        PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
+   },
+   {
+      { GL_RGB9_E5, 0 },
+      { PIPE_FORMAT_R9G9B9E5_FLOAT, 0 }
+   },
+   {
+      { GL_R11F_G11F_B10F, 0 },
+      { PIPE_FORMAT_R11G11B10_FLOAT, 0 }
+   }
+};
+
+
+/**
+ * Return first supported format from the given list.
+ */
+static enum pipe_format
+find_supported_format(struct pipe_screen *screen,
+                      const enum pipe_format formats[],
+                      enum pipe_texture_target target,
+                      unsigned sample_count,
+                      unsigned tex_usage)
+{
+   uint i;
+   for (i = 0; formats[i]; i++) {
+      if (screen->is_format_supported(screen, formats[i], target,
+                                      sample_count, tex_usage)) {
+         return formats[i];
+      }
+   }
+   return PIPE_FORMAT_NONE;
+}
+
+struct exact_format_mapping
+{
+   GLenum format;
+   GLenum type;
+   enum pipe_format pformat;
+};
+
+static const struct exact_format_mapping rgba8888_tbl[] =
+{
+   { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_A8B8G8R8_UNORM },
+   { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_A8B8G8R8_UNORM },
+   { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_R8G8B8A8_UNORM },
+   { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_R8G8B8A8_UNORM },
+   { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_A8R8G8B8_UNORM },
+   { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_B8G8R8A8_UNORM },
+   { GL_RGBA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_R8G8B8A8_UNORM },
+   { GL_ABGR_EXT, GL_UNSIGNED_BYTE,               PIPE_FORMAT_A8B8G8R8_UNORM },
+   { GL_BGRA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_B8G8R8A8_UNORM },
+   { 0,           0,                              0                          }
+};
+
+static const struct exact_format_mapping rgbx8888_tbl[] =
+{
+   { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_X8R8G8B8_UNORM },
+   { GL_BGRA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_B8G8R8X8_UNORM },
+   { GL_BGRA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_B8G8R8X8_UNORM },
+   /* No Mesa formats for these Gallium formats:
+   { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_X8B8G8R8_UNORM },
+   { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_X8B8G8R8_UNORM },
+   { GL_RGBA,     GL_UNSIGNED_INT_8_8_8_8_REV,    PIPE_FORMAT_R8G8B8X8_UNORM },
+   { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8,        PIPE_FORMAT_R8G8B8X8_UNORM },
+   { GL_RGBA,     GL_UNSIGNED_BYTE,               PIPE_FORMAT_R8G8B8X8_UNORM },
+   { GL_ABGR_EXT, GL_UNSIGNED_BYTE,               PIPE_FORMAT_X8B8G8R8_UNORM },
+   */
+   { 0,           0,                              0                          }
+};
+
+static const struct exact_format_mapping rgba1010102_tbl[] =
+{
+   { GL_BGRA,     GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_B10G10R10A2_UNORM },
+   /* No Mesa formats for these Gallium formats:
+   { GL_RGBA,     GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_R10G10B10A2_UNORM },
+   { GL_ABGR_EXT, GL_UNSIGNED_INT_10_10_10_2,     PIPE_FORMAT_R10G10B10A2_UNORM },
+   { GL_ABGR_EXT, GL_UNSIGNED_INT,                PIPE_FORMAT_R10G10B10A2_UNORM },
+   */
+   { 0,           0,                              0                             }
+};
+
+/**
+ * If there is an exact pipe_format match for {internalFormat, format, type}
+ * return that, otherwise return PIPE_FORMAT_NONE so we can do fuzzy matching.
+ */
+static enum pipe_format
+find_exact_format(GLint internalFormat, GLenum format, GLenum type)
+{
+   uint i;
+   const struct exact_format_mapping* tbl;
+
+   if (format == GL_NONE || type == GL_NONE)
+      return PIPE_FORMAT_NONE;
+
+   switch (internalFormat) {
+   case 4:
+   case GL_RGBA:
+   case GL_RGBA8:
+      tbl = rgba8888_tbl;
+      break;
+   case 3:
+   case GL_RGB:
+   case GL_RGB8:
+      tbl = rgbx8888_tbl;
+      break;
+   case GL_RGB10_A2:
+      tbl = rgba1010102_tbl;
+      break;
+   default:
+      return PIPE_FORMAT_NONE;
+   }
+
+   for (i = 0; tbl[i].format; i++)
+      if (tbl[i].format == format && tbl[i].type == type)
+         return tbl[i].pformat;
+
+   return PIPE_FORMAT_NONE;
+}
+
+/**
+ * Given an OpenGL internalFormat value for a texture or surface, return
+ * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
+ * This is called during glTexImage2D, for example.
+ *
+ * The bindings parameter typically has PIPE_BIND_SAMPLER_VIEW set, plus
+ * either PIPE_BINDING_RENDER_TARGET or PIPE_BINDING_DEPTH_STENCIL if
+ * we want render-to-texture ability.
+ *
+ * \param internalFormat  the user value passed to glTexImage2D
+ * \param target  one of PIPE_TEXTURE_x
+ * \param bindings  bitmask of PIPE_BIND_x flags.
+ */
+enum pipe_format
+st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
+                 GLenum format, GLenum type,
+                 enum pipe_texture_target target, unsigned sample_count,
+                 unsigned bindings)
+{
+   GET_CURRENT_CONTEXT(ctx); /* XXX this should be a function parameter */
+   int i, j;
+   enum pipe_format pf;
+
+   /* can't render to compressed formats at this time */
+   if (_mesa_is_compressed_format(ctx, internalFormat)
+       && (bindings & ~PIPE_BIND_SAMPLER_VIEW)) {
+      return PIPE_FORMAT_NONE;
+   }
+
+   /* search for exact matches */
+   pf = find_exact_format(internalFormat, format, type);
+   if (pf != PIPE_FORMAT_NONE &&
+       screen->is_format_supported(screen, pf,
+                                   target, sample_count, bindings))
+      return pf;
+
+   /* search table for internalFormat */
+   for (i = 0; i < Elements(format_map); i++) {
+      const struct format_mapping *mapping = &format_map[i];
+      for (j = 0; mapping->glFormats[j]; j++) {
+         if (mapping->glFormats[j] == internalFormat) {
+            /* Found the desired internal format.  Find first pipe format
+             * which is supported by the driver.
+             */
+            return find_supported_format(screen, mapping->pipeFormats,
+                                         target, sample_count, bindings);
+         }
+      }
+   }
+
+   _mesa_problem(NULL, "unhandled format!\n");
+   return PIPE_FORMAT_NONE;
+}
+
+
+/**
+ * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
+ */
+enum pipe_format
+st_choose_renderbuffer_format(struct pipe_screen *screen,
+                              GLenum internalFormat, unsigned sample_count)
+{
+   uint usage;
+   if (_mesa_is_depth_or_stencil_format(internalFormat))
+      usage = PIPE_BIND_DEPTH_STENCIL;
+   else
+      usage = PIPE_BIND_RENDER_TARGET;
+   return st_choose_format(screen, internalFormat, GL_NONE, GL_NONE, PIPE_TEXTURE_2D,
+                           sample_count, usage);
+}
+
+
+gl_format
+st_ChooseTextureFormat_renderable(struct gl_context *ctx, GLint internalFormat,
+				  GLenum format, GLenum type, GLboolean renderable)
+{
+   struct pipe_screen *screen = st_context(ctx)->pipe->screen;
+   enum pipe_format pFormat;
+   uint bindings;
+
+   (void) format;
+   (void) type;
+
+   /* GL textures may wind up being render targets, but we don't know
+    * that in advance.  Specify potential render target flags now.
+    */
+   bindings = PIPE_BIND_SAMPLER_VIEW;
+   if (renderable) {
+      if (_mesa_is_depth_or_stencil_format(internalFormat))
+	 bindings |= PIPE_BIND_DEPTH_STENCIL;
+      else
+	 bindings |= PIPE_BIND_RENDER_TARGET;
+   }
+
+   pFormat = st_choose_format(screen, internalFormat, format, type,
+                              PIPE_TEXTURE_2D, 0, bindings);
+
+   if (pFormat == PIPE_FORMAT_NONE) {
+      /* try choosing format again, this time without render target bindings */
+      pFormat = st_choose_format(screen, internalFormat, format, type,
+                                 PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW);
+   }
+
+   if (pFormat == PIPE_FORMAT_NONE) {
+      /* no luck at all */
+      return MESA_FORMAT_NONE;
+   }
+
+   return st_pipe_format_to_mesa_format(pFormat);
+}
+
+
+/**
+ * Called via ctx->Driver.ChooseTextureFormat().
+ */
+gl_format
+st_ChooseTextureFormat(struct gl_context *ctx, GLint internalFormat,
+                       GLenum format, GLenum type)
+{
+   boolean want_renderable =
+      internalFormat == 3 || internalFormat == 4 ||
+      internalFormat == GL_RGB || internalFormat == GL_RGBA ||
+      internalFormat == GL_RGB8 || internalFormat == GL_RGBA8 ||
+      internalFormat == GL_BGRA;
+
+   return st_ChooseTextureFormat_renderable(ctx, internalFormat,
+					    format, type, want_renderable);
+}
+
+/**
+ * Test if a gallium format is equivalent to a GL format/type.
+ */
+GLboolean
+st_equal_formats(enum pipe_format pFormat, GLenum format, GLenum type)
+{
+   switch (pFormat) {
+   case PIPE_FORMAT_A8B8G8R8_UNORM:
+      return format == GL_RGBA && type == GL_UNSIGNED_BYTE;
+   case PIPE_FORMAT_A8R8G8B8_UNORM:
+      return format == GL_BGRA && type == GL_UNSIGNED_BYTE;
+   case PIPE_FORMAT_B5G6R5_UNORM:
+      return format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5;
+   /* XXX more combos... */
+   default:
+      return GL_FALSE;
+   }
+}
+
+GLboolean
+st_sampler_compat_formats(enum pipe_format format1, enum pipe_format format2)
+{
+   if (format1 == format2)
+      return GL_TRUE;
+
+   if (format1 == PIPE_FORMAT_B8G8R8A8_UNORM &&
+       format2 == PIPE_FORMAT_B8G8R8X8_UNORM)
+      return GL_TRUE;
+
+   if (format1 == PIPE_FORMAT_B8G8R8X8_UNORM &&
+       format2 == PIPE_FORMAT_B8G8R8A8_UNORM)
+      return GL_TRUE;
+
+   if (format1 == PIPE_FORMAT_A8B8G8R8_UNORM &&
+       format2 == PIPE_FORMAT_X8B8G8R8_UNORM)
+      return GL_TRUE;
+
+   if (format1 == PIPE_FORMAT_X8B8G8R8_UNORM &&
+       format2 == PIPE_FORMAT_A8B8G8R8_UNORM)
+      return GL_TRUE;
+
+   if (format1 == PIPE_FORMAT_A8R8G8B8_UNORM &&
+       format2 == PIPE_FORMAT_X8R8G8B8_UNORM)
+      return GL_TRUE;
+
+   if (format1 == PIPE_FORMAT_X8R8G8B8_UNORM &&
+       format2 == PIPE_FORMAT_A8R8G8B8_UNORM)
+      return GL_TRUE;
+
+   return GL_FALSE;
+}
+
+
+
+/**
+ * This is used for translating texture border color and the clear
+ * color.  For example, the clear color is interpreted according to
+ * the renderbuffer's base format.  For example, if clearing a
+ * GL_LUMINANCE buffer, ClearColor[0] = luminance and ClearColor[1] =
+ * alpha.  Similarly for texture border colors.
+ */
+void
+st_translate_color(const GLfloat colorIn[4], GLenum baseFormat,
+                   GLfloat colorOut[4])
+{
+   switch (baseFormat) {
+   case GL_RED:
+      colorOut[0] = colorIn[0];
+      colorOut[1] = 0.0F;
+      colorOut[2] = 0.0F;
+      colorOut[3] = 1.0F;
+      break;
+   case GL_RG:
+      colorOut[0] = colorIn[0];
+      colorOut[1] = colorIn[1];
+      colorOut[2] = 0.0F;
+      colorOut[3] = 1.0F;
+      break;
+   case GL_RGB:
+      colorOut[0] = colorIn[0];
+      colorOut[1] = colorIn[1];
+      colorOut[2] = colorIn[2];
+      colorOut[3] = 1.0F;
+      break;
+   case GL_ALPHA:
+      colorOut[0] = colorOut[1] = colorOut[2] = 0.0;
+      colorOut[3] = colorIn[3];
+      break;
+   case GL_LUMINANCE:
+      colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];
+      colorOut[3] = 1.0;
+      break;
+   case GL_LUMINANCE_ALPHA:
+      colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];
+      colorOut[3] = colorIn[3];
+      break;
+   case GL_INTENSITY:
+      colorOut[0] = colorOut[1] = colorOut[2] = colorOut[3] = colorIn[0];
+      break;
+   default:
+      COPY_4V(colorOut, colorIn);
+   }
+}