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author | marha <marha@users.sourceforge.net> | 2011-02-22 15:03:18 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2011-02-22 15:03:18 +0000 |
commit | aa5b2e956fcc17b27d0f20ba7af65c52b34ef135 (patch) | |
tree | 6117dbd9745f6fa241d5ca19af20d1c3adb6e859 /mesalib/src/mesa/state_tracker/st_format.c | |
parent | 2d47702332ee534cda7f913e8d7892e53e4e23dc (diff) | |
parent | 9273afeeb4499a0493f120b7525e17b6ae51113e (diff) | |
download | vcxsrv-aa5b2e956fcc17b27d0f20ba7af65c52b34ef135.tar.gz vcxsrv-aa5b2e956fcc17b27d0f20ba7af65c52b34ef135.tar.bz2 vcxsrv-aa5b2e956fcc17b27d0f20ba7af65c52b34ef135.zip |
svn merge ^/branches/released .
Diffstat (limited to 'mesalib/src/mesa/state_tracker/st_format.c')
-rw-r--r-- | mesalib/src/mesa/state_tracker/st_format.c | 2249 |
1 files changed, 1149 insertions, 1100 deletions
diff --git a/mesalib/src/mesa/state_tracker/st_format.c b/mesalib/src/mesa/state_tracker/st_format.c index a532e089c..3620d0cb6 100644 --- a/mesalib/src/mesa/state_tracker/st_format.c +++ b/mesalib/src/mesa/state_tracker/st_format.c @@ -1,1100 +1,1149 @@ -/************************************************************************** - * - * 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; - - desc = util_format_description(format); - assert(desc); - - 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_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 { - const GLuint size = format_max_bits(format); - if (size == 8) { - if (desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED) - return GL_UNSIGNED_BYTE; - else - return GL_BYTE; - } - else if (size == 16) { - if (desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED) - return GL_UNSIGNED_SHORT; - else - return GL_SHORT; - } - else { - assert( size <= 32 ); - if (desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED) - return GL_UNSIGNED_INT; - else - return GL_INT; - } - } - } - else if (format == PIPE_FORMAT_UYVY) { - return GL_UNSIGNED_SHORT; - } - else if (format == PIPE_FORMAT_YUYV) { - return GL_UNSIGNED_SHORT; - } - else { - /* compressed format? */ - assert(0); - } - - assert(0); - 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_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_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; - - 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_R16G16B16A16_SNORM: - return MESA_FORMAT_SIGNED_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_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_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; - - default: - assert(0); - return MESA_FORMAT_NONE; - } -} - - -/** - * Return first supported format from the given list. - */ -static enum pipe_format -find_supported_format(struct pipe_screen *screen, - const enum pipe_format formats[], - uint num_formats, - enum pipe_texture_target target, - unsigned sample_count, - unsigned tex_usage, - unsigned geom_flags) -{ - uint i; - for (i = 0; i < num_formats; i++) { - if (screen->is_format_supported(screen, formats[i], target, - sample_count, tex_usage, geom_flags)) { - return formats[i]; - } - } - return PIPE_FORMAT_NONE; -} - - -/** - * Find an RGBA format supported by the context/winsys. - */ -static enum pipe_format -default_rgba_format(struct pipe_screen *screen, - enum pipe_texture_target target, - unsigned sample_count, - unsigned tex_usage, - unsigned geom_flags) -{ - static const enum pipe_format colorFormats[] = { - PIPE_FORMAT_B8G8R8A8_UNORM, - PIPE_FORMAT_A8R8G8B8_UNORM, - PIPE_FORMAT_A8B8G8R8_UNORM, - PIPE_FORMAT_B5G6R5_UNORM - }; - return find_supported_format(screen, colorFormats, Elements(colorFormats), - target, sample_count, tex_usage, geom_flags); -} - - -/** - * Find an RGB format supported by the context/winsys. - */ -static enum pipe_format -default_rgb_format(struct pipe_screen *screen, - enum pipe_texture_target target, - unsigned sample_count, - unsigned tex_usage, - unsigned geom_flags) -{ - static const enum pipe_format colorFormats[] = { - 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 - }; - return find_supported_format(screen, colorFormats, Elements(colorFormats), - target, sample_count, tex_usage, geom_flags); -} - -/** - * Find an sRGBA format supported by the context/winsys. - */ -static enum pipe_format -default_srgba_format(struct pipe_screen *screen, - enum pipe_texture_target target, - unsigned sample_count, - unsigned tex_usage, - unsigned geom_flags) -{ - static const enum pipe_format colorFormats[] = { - PIPE_FORMAT_B8G8R8A8_SRGB, - PIPE_FORMAT_A8R8G8B8_SRGB, - PIPE_FORMAT_A8B8G8R8_SRGB, - }; - return find_supported_format(screen, colorFormats, Elements(colorFormats), - target, sample_count, tex_usage, geom_flags); -} - - -/** - * 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, - enum pipe_texture_target target, unsigned sample_count, - unsigned bindings) -{ - unsigned geom_flags = 0; /* we don't care about POT vs. NPOT here, yet */ - - switch (internalFormat) { - case GL_RGB10: - case GL_RGB10_A2: - if (screen->is_format_supported( screen, PIPE_FORMAT_B10G10R10A2_UNORM, - target, sample_count, bindings, - geom_flags )) - return PIPE_FORMAT_B10G10R10A2_UNORM; - /* Pass through. */ - case 4: - case GL_RGBA: - case GL_RGBA8: - return default_rgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_BGRA: - if (screen->is_format_supported( screen, PIPE_FORMAT_B8G8R8A8_UNORM, - target, sample_count, bindings, - geom_flags )) - return PIPE_FORMAT_B8G8R8A8_UNORM; - return default_rgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case 3: - case GL_RGB: - case GL_RGB8: - return default_rgb_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_RGB12: - case GL_RGB16: - case GL_RGBA12: - case GL_RGBA16: - if (screen->is_format_supported( screen, PIPE_FORMAT_R16G16B16A16_UNORM, - target, sample_count, bindings, - geom_flags )) - return PIPE_FORMAT_R16G16B16A16_UNORM; - return default_rgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_RGBA4: - case GL_RGBA2: - if (screen->is_format_supported( screen, PIPE_FORMAT_B4G4R4A4_UNORM, - target, sample_count, bindings, - geom_flags )) - return PIPE_FORMAT_B4G4R4A4_UNORM; - return default_rgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_RGB5_A1: - if (screen->is_format_supported( screen, PIPE_FORMAT_B5G5R5A1_UNORM, - target, sample_count, bindings, - geom_flags )) - return PIPE_FORMAT_B5G5R5A1_UNORM; - return default_rgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_R3_G3_B2: - if (screen->is_format_supported( screen, PIPE_FORMAT_B2G3R3_UNORM, - target, sample_count, bindings, - geom_flags )) - return PIPE_FORMAT_B2G3R3_UNORM; - /* Pass through. */ - case GL_RGB5: - case GL_RGB4: - if (screen->is_format_supported( screen, PIPE_FORMAT_B5G6R5_UNORM, - target, sample_count, bindings, - geom_flags )) - return PIPE_FORMAT_B5G6R5_UNORM; - if (screen->is_format_supported( screen, PIPE_FORMAT_B5G5R5A1_UNORM, - target, sample_count, bindings, - geom_flags )) - return PIPE_FORMAT_B5G5R5A1_UNORM; - return default_rgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_ALPHA12: - case GL_ALPHA16: - if (screen->is_format_supported( screen, PIPE_FORMAT_A16_UNORM, target, - sample_count, bindings, geom_flags )) - return PIPE_FORMAT_A16_UNORM; - /* Pass through. */ - case GL_ALPHA: - case GL_ALPHA4: - case GL_ALPHA8: - case GL_COMPRESSED_ALPHA: - if (screen->is_format_supported( screen, PIPE_FORMAT_A8_UNORM, target, - sample_count, bindings, geom_flags )) - return PIPE_FORMAT_A8_UNORM; - return default_rgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_LUMINANCE12: - case GL_LUMINANCE16: - if (screen->is_format_supported( screen, PIPE_FORMAT_L16_UNORM, target, - sample_count, bindings, geom_flags )) - return PIPE_FORMAT_L16_UNORM; - /* Pass through. */ - case 1: - case GL_LUMINANCE: - case GL_LUMINANCE4: - case GL_LUMINANCE8: - case GL_COMPRESSED_LUMINANCE: - if (screen->is_format_supported( screen, PIPE_FORMAT_L8_UNORM, target, - sample_count, bindings, geom_flags )) - return PIPE_FORMAT_L8_UNORM; - return default_rgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_LUMINANCE12_ALPHA4: - case GL_LUMINANCE12_ALPHA12: - case GL_LUMINANCE16_ALPHA16: - if (screen->is_format_supported( screen, PIPE_FORMAT_L16A16_UNORM, target, - sample_count, bindings, geom_flags )) - return PIPE_FORMAT_L16A16_UNORM; - /* Pass through. */ - case 2: - case GL_LUMINANCE_ALPHA: - case GL_LUMINANCE6_ALPHA2: - case GL_LUMINANCE8_ALPHA8: - case GL_COMPRESSED_LUMINANCE_ALPHA: - if (screen->is_format_supported( screen, PIPE_FORMAT_L8A8_UNORM, target, - sample_count, bindings, geom_flags )) - return PIPE_FORMAT_L8A8_UNORM; - return default_rgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_LUMINANCE4_ALPHA4: - if (screen->is_format_supported( screen, PIPE_FORMAT_L4A4_UNORM, target, - sample_count, bindings, geom_flags )) - return PIPE_FORMAT_L4A4_UNORM; - if (screen->is_format_supported( screen, PIPE_FORMAT_L8A8_UNORM, target, - sample_count, bindings, geom_flags )) - return PIPE_FORMAT_L8A8_UNORM; - return default_rgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_INTENSITY12: - case GL_INTENSITY16: - if (screen->is_format_supported( screen, PIPE_FORMAT_I16_UNORM, target, - sample_count, bindings, geom_flags )) - return PIPE_FORMAT_I16_UNORM; - /* Pass through. */ - case GL_INTENSITY: - case GL_INTENSITY4: - case GL_INTENSITY8: - case GL_COMPRESSED_INTENSITY: - if (screen->is_format_supported( screen, PIPE_FORMAT_I8_UNORM, target, - sample_count, bindings, geom_flags )) - return PIPE_FORMAT_I8_UNORM; - return default_rgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_YCBCR_MESA: - if (screen->is_format_supported(screen, PIPE_FORMAT_UYVY, target, - sample_count, bindings, geom_flags)) { - return PIPE_FORMAT_UYVY; - } - if (screen->is_format_supported(screen, PIPE_FORMAT_YUYV, target, - sample_count, bindings, geom_flags)) { - return PIPE_FORMAT_YUYV; - } - return PIPE_FORMAT_NONE; - - case GL_COMPRESSED_RED: - case GL_COMPRESSED_RG: - case GL_COMPRESSED_RGB: - /* can only sample from compressed formats */ - if (bindings & ~PIPE_BIND_SAMPLER_VIEW) - return PIPE_FORMAT_NONE; - else if (screen->is_format_supported(screen, PIPE_FORMAT_DXT1_RGB, - target, sample_count, bindings, - geom_flags)) - return PIPE_FORMAT_DXT1_RGB; - else - return default_rgb_format(screen, target, sample_count, bindings, - geom_flags); - - case GL_COMPRESSED_RGBA: - /* can only sample from compressed formats */ - if (bindings & ~PIPE_BIND_SAMPLER_VIEW) - return PIPE_FORMAT_NONE; - else if (screen->is_format_supported(screen, PIPE_FORMAT_DXT3_RGBA, - target, sample_count, bindings, - geom_flags)) - return PIPE_FORMAT_DXT3_RGBA; - else - return default_rgba_format(screen, target, sample_count, bindings, - geom_flags); - - case GL_RGB_S3TC: - case GL_RGB4_S3TC: - case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: - if (screen->is_format_supported(screen, PIPE_FORMAT_DXT1_RGB, - target, sample_count, bindings, - geom_flags)) - return PIPE_FORMAT_DXT1_RGB; - else - return PIPE_FORMAT_NONE; - - case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: - if (screen->is_format_supported(screen, PIPE_FORMAT_DXT1_RGBA, - target, sample_count, bindings, - geom_flags)) - return PIPE_FORMAT_DXT1_RGBA; - else - return PIPE_FORMAT_NONE; - - case GL_RGBA_S3TC: - case GL_RGBA4_S3TC: - case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: - if (screen->is_format_supported(screen, PIPE_FORMAT_DXT3_RGBA, - target, sample_count, bindings, - geom_flags)) - return PIPE_FORMAT_DXT3_RGBA; - else - return PIPE_FORMAT_NONE; - - case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: - if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA, - target, sample_count, bindings, - geom_flags)) - return PIPE_FORMAT_DXT5_RGBA; - else - return PIPE_FORMAT_NONE; - -#if 0 - case GL_COMPRESSED_RGB_FXT1_3DFX: - return PIPE_FORMAT_RGB_FXT1; - case GL_COMPRESSED_RGBA_FXT1_3DFX: - return PIPE_FORMAT_RGB_FXT1; -#endif - - case GL_DEPTH_COMPONENT16: - if (screen->is_format_supported(screen, PIPE_FORMAT_Z16_UNORM, target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_Z16_UNORM; - /* fall-through */ - case GL_DEPTH_COMPONENT24: - if (screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED, - target, sample_count, bindings, geom_flags)) - return PIPE_FORMAT_Z24_UNORM_S8_USCALED; - if (screen->is_format_supported(screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM, - target, sample_count, bindings, geom_flags)) - return PIPE_FORMAT_S8_USCALED_Z24_UNORM; - /* fall-through */ - case GL_DEPTH_COMPONENT32: - if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_UNORM, target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_Z32_UNORM; - /* fall-through */ - case GL_DEPTH_COMPONENT: - { - static const enum pipe_format formats[] = { - PIPE_FORMAT_Z32_UNORM, - PIPE_FORMAT_Z24_UNORM_S8_USCALED, - PIPE_FORMAT_S8_USCALED_Z24_UNORM, - PIPE_FORMAT_Z16_UNORM - }; - return find_supported_format(screen, formats, Elements(formats), - target, sample_count, bindings, geom_flags); - } - - case GL_STENCIL_INDEX: - case GL_STENCIL_INDEX1_EXT: - case GL_STENCIL_INDEX4_EXT: - case GL_STENCIL_INDEX8_EXT: - case GL_STENCIL_INDEX16_EXT: - { - static const enum pipe_format formats[] = { - PIPE_FORMAT_S8_USCALED, - PIPE_FORMAT_Z24_UNORM_S8_USCALED, - PIPE_FORMAT_S8_USCALED_Z24_UNORM - }; - return find_supported_format(screen, formats, Elements(formats), - target, sample_count, bindings, geom_flags); - } - - case GL_DEPTH_STENCIL_EXT: - case GL_DEPTH24_STENCIL8_EXT: - { - static const enum pipe_format formats[] = { - PIPE_FORMAT_Z24_UNORM_S8_USCALED, - PIPE_FORMAT_S8_USCALED_Z24_UNORM - }; - return find_supported_format(screen, formats, Elements(formats), - target, sample_count, bindings, geom_flags); - } - - case GL_SRGB_EXT: - case GL_SRGB8_EXT: - case GL_SRGB_ALPHA_EXT: - case GL_SRGB8_ALPHA8_EXT: - return default_srgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_COMPRESSED_SRGB_EXT: - case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT: - if (screen->is_format_supported(screen, PIPE_FORMAT_DXT1_SRGB, target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_DXT1_SRGB; - return default_srgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: - return PIPE_FORMAT_DXT1_SRGBA; - - case GL_COMPRESSED_SRGB_ALPHA_EXT: - case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: - if (screen->is_format_supported(screen, PIPE_FORMAT_DXT3_SRGBA, target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_DXT3_SRGBA; - return default_srgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT: - return PIPE_FORMAT_DXT5_SRGBA; - - case GL_SLUMINANCE_ALPHA_EXT: - case GL_SLUMINANCE8_ALPHA8_EXT: - case GL_COMPRESSED_SLUMINANCE_EXT: - case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT: - if (screen->is_format_supported(screen, PIPE_FORMAT_L8A8_SRGB, target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_L8A8_SRGB; - return default_srgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_SLUMINANCE_EXT: - case GL_SLUMINANCE8_EXT: - if (screen->is_format_supported(screen, PIPE_FORMAT_L8_SRGB, target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_L8_SRGB; - return default_srgba_format( screen, target, sample_count, bindings, - geom_flags ); - - case GL_RED: - case GL_R8: - if (screen->is_format_supported(screen, PIPE_FORMAT_R8_UNORM, target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_R8_UNORM; - return PIPE_FORMAT_NONE; - case GL_RG: - case GL_RG8: - if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8_UNORM, target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_R8G8_UNORM; - return PIPE_FORMAT_NONE; - - case GL_R16: - if (screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM, target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_R16_UNORM; - return PIPE_FORMAT_NONE; - - case GL_RG16: - if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM, target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_R16G16_UNORM; - return PIPE_FORMAT_NONE; - - case GL_COMPRESSED_RED_RGTC1: - if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_UNORM, target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_RGTC1_UNORM; - return PIPE_FORMAT_NONE; - - case GL_COMPRESSED_SIGNED_RED_RGTC1: - if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_SNORM, target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_RGTC1_SNORM; - return PIPE_FORMAT_NONE; - - case GL_COMPRESSED_RG_RGTC2: - if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_UNORM, target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_RGTC2_UNORM; - return PIPE_FORMAT_NONE; - - case GL_COMPRESSED_SIGNED_RG_RGTC2: - if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_SNORM, target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_RGTC2_SNORM; - return PIPE_FORMAT_NONE; - - /* 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. - */ - case GL_RED_INTEGER_EXT: - case GL_GREEN_INTEGER_EXT: - case GL_BLUE_INTEGER_EXT: - case GL_ALPHA_INTEGER_EXT: - case GL_RGB_INTEGER_EXT: - case GL_RGBA_INTEGER_EXT: - case GL_BGR_INTEGER_EXT: - case GL_BGRA_INTEGER_EXT: - case GL_LUMINANCE_INTEGER_EXT: - case GL_LUMINANCE_ALPHA_INTEGER_EXT: - /* fall-through */ - case GL_RGBA8I_EXT: - case GL_RGB8I_EXT: - case GL_ALPHA8I_EXT: - case GL_INTENSITY8I_EXT: - case GL_LUMINANCE8I_EXT: - case GL_LUMINANCE_ALPHA8I_EXT: - if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SSCALED, - target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_R8G8B8A8_SSCALED; - return PIPE_FORMAT_NONE; - case GL_RGBA16I_EXT: - case GL_RGB16I_EXT: - case GL_ALPHA16I_EXT: - case GL_INTENSITY16I_EXT: - case GL_LUMINANCE16I_EXT: - case GL_LUMINANCE_ALPHA16I_EXT: - if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_SSCALED, - target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_R16G16B16A16_SSCALED; - return PIPE_FORMAT_NONE; - case GL_RGBA32I_EXT: - case GL_RGB32I_EXT: - case GL_ALPHA32I_EXT: - case GL_INTENSITY32I_EXT: - case GL_LUMINANCE32I_EXT: - case GL_LUMINANCE_ALPHA32I_EXT: - /* xxx */ - if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_SSCALED, - target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_R32G32B32A32_SSCALED; - return PIPE_FORMAT_NONE; - - case GL_RGBA8UI_EXT: - case GL_RGB8UI_EXT: - case GL_ALPHA8UI_EXT: - case GL_INTENSITY8UI_EXT: - case GL_LUMINANCE8UI_EXT: - case GL_LUMINANCE_ALPHA8UI_EXT: - if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_USCALED, - target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_R8G8B8A8_USCALED; - return PIPE_FORMAT_NONE; - - case GL_RGBA16UI_EXT: - case GL_RGB16UI_EXT: - case GL_ALPHA16UI_EXT: - case GL_INTENSITY16UI_EXT: - case GL_LUMINANCE16UI_EXT: - case GL_LUMINANCE_ALPHA16UI_EXT: - if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_USCALED, - target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_R16G16B16A16_USCALED; - return PIPE_FORMAT_NONE; - - case GL_RGBA32UI_EXT: - case GL_RGB32UI_EXT: - case GL_ALPHA32UI_EXT: - case GL_INTENSITY32UI_EXT: - case GL_LUMINANCE32UI_EXT: - case GL_LUMINANCE_ALPHA32UI_EXT: - if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_USCALED, - target, - sample_count, bindings, geom_flags)) - return PIPE_FORMAT_R32G32B32A32_USCALED; - return PIPE_FORMAT_NONE; - - default: - 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, PIPE_TEXTURE_2D, - sample_count, usage); -} - - -/** - * Called via ctx->Driver.chooseTextureFormat(). - */ -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 == GL_TRUE) { - if (_mesa_is_depth_format(internalFormat) || - _mesa_is_depth_or_stencil_format(internalFormat)) - bindings |= PIPE_BIND_DEPTH_STENCIL; - else - bindings |= PIPE_BIND_RENDER_TARGET; - } - - pFormat = st_choose_format(screen, internalFormat, - 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, - 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); -} - -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; -} +/**************************************************************************
+ *
+ * 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;
+
+ desc = util_format_description(format);
+ assert(desc);
+
+ 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_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 {
+ const GLuint size = format_max_bits(format);
+ if (size == 8) {
+ if (desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED)
+ return GL_UNSIGNED_BYTE;
+ else
+ return GL_BYTE;
+ }
+ else if (size == 16) {
+ if (desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED)
+ return GL_UNSIGNED_SHORT;
+ else
+ return GL_SHORT;
+ }
+ else {
+ assert( size <= 32 );
+ if (desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED)
+ return GL_UNSIGNED_INT;
+ else
+ return GL_INT;
+ }
+ }
+ }
+ 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_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_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;
+
+ 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_R16G16B16A16_SNORM:
+ return MESA_FORMAT_SIGNED_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_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_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;
+
+ default:
+ assert(0);
+ return MESA_FORMAT_NONE;
+ }
+}
+
+
+/**
+ * Return first supported format from the given list.
+ */
+static enum pipe_format
+find_supported_format(struct pipe_screen *screen,
+ const enum pipe_format formats[],
+ uint num_formats,
+ enum pipe_texture_target target,
+ unsigned sample_count,
+ unsigned tex_usage,
+ unsigned geom_flags)
+{
+ uint i;
+ for (i = 0; i < num_formats; i++) {
+ if (screen->is_format_supported(screen, formats[i], target,
+ sample_count, tex_usage, geom_flags)) {
+ return formats[i];
+ }
+ }
+ return PIPE_FORMAT_NONE;
+}
+
+
+/**
+ * Find an RGBA format supported by the context/winsys.
+ */
+static enum pipe_format
+default_rgba_format(struct pipe_screen *screen,
+ enum pipe_texture_target target,
+ unsigned sample_count,
+ unsigned tex_usage,
+ unsigned geom_flags)
+{
+ static const enum pipe_format colorFormats[] = {
+ PIPE_FORMAT_B8G8R8A8_UNORM,
+ PIPE_FORMAT_A8R8G8B8_UNORM,
+ PIPE_FORMAT_A8B8G8R8_UNORM,
+ PIPE_FORMAT_B5G6R5_UNORM
+ };
+ return find_supported_format(screen, colorFormats, Elements(colorFormats),
+ target, sample_count, tex_usage, geom_flags);
+}
+
+
+/**
+ * Find an RGB format supported by the context/winsys.
+ */
+static enum pipe_format
+default_rgb_format(struct pipe_screen *screen,
+ enum pipe_texture_target target,
+ unsigned sample_count,
+ unsigned tex_usage,
+ unsigned geom_flags)
+{
+ static const enum pipe_format colorFormats[] = {
+ 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
+ };
+ return find_supported_format(screen, colorFormats, Elements(colorFormats),
+ target, sample_count, tex_usage, geom_flags);
+}
+
+/**
+ * Find an sRGBA format supported by the context/winsys.
+ */
+static enum pipe_format
+default_srgba_format(struct pipe_screen *screen,
+ enum pipe_texture_target target,
+ unsigned sample_count,
+ unsigned tex_usage,
+ unsigned geom_flags)
+{
+ static const enum pipe_format colorFormats[] = {
+ PIPE_FORMAT_B8G8R8A8_SRGB,
+ PIPE_FORMAT_A8R8G8B8_SRGB,
+ PIPE_FORMAT_A8B8G8R8_SRGB,
+ };
+ return find_supported_format(screen, colorFormats, Elements(colorFormats),
+ target, sample_count, tex_usage, geom_flags);
+}
+
+
+/**
+ * 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,
+ enum pipe_texture_target target, unsigned sample_count,
+ unsigned bindings)
+{
+ unsigned geom_flags = 0; /* we don't care about POT vs. NPOT here, yet */
+
+ switch (internalFormat) {
+ case GL_RGB10:
+ case GL_RGB10_A2:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_B10G10R10A2_UNORM,
+ target, sample_count, bindings,
+ geom_flags ))
+ return PIPE_FORMAT_B10G10R10A2_UNORM;
+ /* Pass through. */
+ case 4:
+ case GL_RGBA:
+ case GL_RGBA8:
+ return default_rgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_BGRA:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_B8G8R8A8_UNORM,
+ target, sample_count, bindings,
+ geom_flags ))
+ return PIPE_FORMAT_B8G8R8A8_UNORM;
+ return default_rgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case 3:
+ case GL_RGB:
+ case GL_RGB8:
+ return default_rgb_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_RGB12:
+ case GL_RGB16:
+ case GL_RGBA12:
+ case GL_RGBA16:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_R16G16B16A16_UNORM,
+ target, sample_count, bindings,
+ geom_flags ))
+ return PIPE_FORMAT_R16G16B16A16_UNORM;
+ return default_rgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_RGBA4:
+ case GL_RGBA2:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_B4G4R4A4_UNORM,
+ target, sample_count, bindings,
+ geom_flags ))
+ return PIPE_FORMAT_B4G4R4A4_UNORM;
+ return default_rgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_RGB5_A1:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_B5G5R5A1_UNORM,
+ target, sample_count, bindings,
+ geom_flags ))
+ return PIPE_FORMAT_B5G5R5A1_UNORM;
+ return default_rgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_R3_G3_B2:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_B2G3R3_UNORM,
+ target, sample_count, bindings,
+ geom_flags ))
+ return PIPE_FORMAT_B2G3R3_UNORM;
+ /* Pass through. */
+ case GL_RGB5:
+ case GL_RGB4:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_B5G6R5_UNORM,
+ target, sample_count, bindings,
+ geom_flags ))
+ return PIPE_FORMAT_B5G6R5_UNORM;
+ if (screen->is_format_supported( screen, PIPE_FORMAT_B5G5R5A1_UNORM,
+ target, sample_count, bindings,
+ geom_flags ))
+ return PIPE_FORMAT_B5G5R5A1_UNORM;
+ return default_rgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_ALPHA12:
+ case GL_ALPHA16:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_A16_UNORM, target,
+ sample_count, bindings, geom_flags ))
+ return PIPE_FORMAT_A16_UNORM;
+ /* Pass through. */
+ case GL_ALPHA:
+ case GL_ALPHA4:
+ case GL_ALPHA8:
+ case GL_COMPRESSED_ALPHA:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_A8_UNORM, target,
+ sample_count, bindings, geom_flags ))
+ return PIPE_FORMAT_A8_UNORM;
+ return default_rgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_LUMINANCE12:
+ case GL_LUMINANCE16:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_L16_UNORM, target,
+ sample_count, bindings, geom_flags ))
+ return PIPE_FORMAT_L16_UNORM;
+ /* Pass through. */
+ case 1:
+ case GL_LUMINANCE:
+ case GL_LUMINANCE4:
+ case GL_LUMINANCE8:
+ case GL_COMPRESSED_LUMINANCE:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_L8_UNORM, target,
+ sample_count, bindings, geom_flags ))
+ return PIPE_FORMAT_L8_UNORM;
+ return default_rgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_LUMINANCE12_ALPHA4:
+ case GL_LUMINANCE12_ALPHA12:
+ case GL_LUMINANCE16_ALPHA16:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_L16A16_UNORM, target,
+ sample_count, bindings, geom_flags ))
+ return PIPE_FORMAT_L16A16_UNORM;
+ /* Pass through. */
+ case 2:
+ case GL_LUMINANCE_ALPHA:
+ case GL_LUMINANCE6_ALPHA2:
+ case GL_LUMINANCE8_ALPHA8:
+ case GL_COMPRESSED_LUMINANCE_ALPHA:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_L8A8_UNORM, target,
+ sample_count, bindings, geom_flags ))
+ return PIPE_FORMAT_L8A8_UNORM;
+ return default_rgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_LUMINANCE4_ALPHA4:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_L4A4_UNORM, target,
+ sample_count, bindings, geom_flags ))
+ return PIPE_FORMAT_L4A4_UNORM;
+ if (screen->is_format_supported( screen, PIPE_FORMAT_L8A8_UNORM, target,
+ sample_count, bindings, geom_flags ))
+ return PIPE_FORMAT_L8A8_UNORM;
+ return default_rgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_INTENSITY12:
+ case GL_INTENSITY16:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_I16_UNORM, target,
+ sample_count, bindings, geom_flags ))
+ return PIPE_FORMAT_I16_UNORM;
+ /* Pass through. */
+ case GL_INTENSITY:
+ case GL_INTENSITY4:
+ case GL_INTENSITY8:
+ case GL_COMPRESSED_INTENSITY:
+ if (screen->is_format_supported( screen, PIPE_FORMAT_I8_UNORM, target,
+ sample_count, bindings, geom_flags ))
+ return PIPE_FORMAT_I8_UNORM;
+ return default_rgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_YCBCR_MESA:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_UYVY, target,
+ sample_count, bindings, geom_flags)) {
+ return PIPE_FORMAT_UYVY;
+ }
+ if (screen->is_format_supported(screen, PIPE_FORMAT_YUYV, target,
+ sample_count, bindings, geom_flags)) {
+ return PIPE_FORMAT_YUYV;
+ }
+ return PIPE_FORMAT_NONE;
+
+ case GL_COMPRESSED_RED:
+ case GL_COMPRESSED_RG:
+ case GL_COMPRESSED_RGB:
+ /* can only sample from compressed formats */
+ if (bindings & ~PIPE_BIND_SAMPLER_VIEW)
+ return PIPE_FORMAT_NONE;
+ else if (screen->is_format_supported(screen, PIPE_FORMAT_DXT1_RGB,
+ target, sample_count, bindings,
+ geom_flags))
+ return PIPE_FORMAT_DXT1_RGB;
+ else
+ return default_rgb_format(screen, target, sample_count, bindings,
+ geom_flags);
+
+ case GL_COMPRESSED_RGBA:
+ /* can only sample from compressed formats */
+ if (bindings & ~PIPE_BIND_SAMPLER_VIEW)
+ return PIPE_FORMAT_NONE;
+ else if (screen->is_format_supported(screen, PIPE_FORMAT_DXT3_RGBA,
+ target, sample_count, bindings,
+ geom_flags))
+ return PIPE_FORMAT_DXT3_RGBA;
+ else
+ return default_rgba_format(screen, target, sample_count, bindings,
+ geom_flags);
+
+ case GL_RGB_S3TC:
+ case GL_RGB4_S3TC:
+ case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_DXT1_RGB,
+ target, sample_count, bindings,
+ geom_flags))
+ return PIPE_FORMAT_DXT1_RGB;
+ else
+ return PIPE_FORMAT_NONE;
+
+ case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_DXT1_RGBA,
+ target, sample_count, bindings,
+ geom_flags))
+ return PIPE_FORMAT_DXT1_RGBA;
+ else
+ return PIPE_FORMAT_NONE;
+
+ case GL_RGBA_S3TC:
+ case GL_RGBA4_S3TC:
+ case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_DXT3_RGBA,
+ target, sample_count, bindings,
+ geom_flags))
+ return PIPE_FORMAT_DXT3_RGBA;
+ else
+ return PIPE_FORMAT_NONE;
+
+ case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
+ target, sample_count, bindings,
+ geom_flags))
+ return PIPE_FORMAT_DXT5_RGBA;
+ else
+ return PIPE_FORMAT_NONE;
+
+#if 0
+ case GL_COMPRESSED_RGB_FXT1_3DFX:
+ return PIPE_FORMAT_RGB_FXT1;
+ case GL_COMPRESSED_RGBA_FXT1_3DFX:
+ return PIPE_FORMAT_RGB_FXT1;
+#endif
+
+ case GL_DEPTH_COMPONENT16:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_Z16_UNORM, target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_Z16_UNORM;
+ /* fall-through */
+ case GL_DEPTH_COMPONENT24:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
+ target, sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_Z24_UNORM_S8_USCALED;
+ if (screen->is_format_supported(screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
+ target, sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_S8_USCALED_Z24_UNORM;
+ /* fall-through */
+ case GL_DEPTH_COMPONENT32:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_UNORM, target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_Z32_UNORM;
+ /* fall-through */
+ case GL_DEPTH_COMPONENT:
+ {
+ static const enum pipe_format formats[] = {
+ PIPE_FORMAT_Z32_UNORM,
+ PIPE_FORMAT_Z24_UNORM_S8_USCALED,
+ PIPE_FORMAT_S8_USCALED_Z24_UNORM,
+ PIPE_FORMAT_Z16_UNORM
+ };
+ return find_supported_format(screen, formats, Elements(formats),
+ target, sample_count, bindings, geom_flags);
+ }
+
+ case GL_STENCIL_INDEX:
+ case GL_STENCIL_INDEX1_EXT:
+ case GL_STENCIL_INDEX4_EXT:
+ case GL_STENCIL_INDEX8_EXT:
+ case GL_STENCIL_INDEX16_EXT:
+ {
+ static const enum pipe_format formats[] = {
+ PIPE_FORMAT_S8_USCALED,
+ PIPE_FORMAT_Z24_UNORM_S8_USCALED,
+ PIPE_FORMAT_S8_USCALED_Z24_UNORM
+ };
+ return find_supported_format(screen, formats, Elements(formats),
+ target, sample_count, bindings, geom_flags);
+ }
+
+ case GL_DEPTH_STENCIL_EXT:
+ case GL_DEPTH24_STENCIL8_EXT:
+ {
+ static const enum pipe_format formats[] = {
+ PIPE_FORMAT_Z24_UNORM_S8_USCALED,
+ PIPE_FORMAT_S8_USCALED_Z24_UNORM
+ };
+ return find_supported_format(screen, formats, Elements(formats),
+ target, sample_count, bindings, geom_flags);
+ }
+
+ case GL_SRGB_EXT:
+ case GL_SRGB8_EXT:
+ case GL_SRGB_ALPHA_EXT:
+ case GL_SRGB8_ALPHA8_EXT:
+ return default_srgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_COMPRESSED_SRGB_EXT:
+ case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_DXT1_SRGB, target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_DXT1_SRGB;
+ return default_srgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
+ return PIPE_FORMAT_DXT1_SRGBA;
+
+ case GL_COMPRESSED_SRGB_ALPHA_EXT:
+ case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_DXT3_SRGBA, target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_DXT3_SRGBA;
+ return default_srgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
+ return PIPE_FORMAT_DXT5_SRGBA;
+
+ case GL_SLUMINANCE_ALPHA_EXT:
+ case GL_SLUMINANCE8_ALPHA8_EXT:
+ case GL_COMPRESSED_SLUMINANCE_EXT:
+ case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_L8A8_SRGB, target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_L8A8_SRGB;
+ return default_srgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_SLUMINANCE_EXT:
+ case GL_SLUMINANCE8_EXT:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_L8_SRGB, target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_L8_SRGB;
+ return default_srgba_format( screen, target, sample_count, bindings,
+ geom_flags );
+
+ case GL_RED:
+ case GL_R8:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_R8_UNORM, target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_R8_UNORM;
+ return PIPE_FORMAT_NONE;
+ case GL_RG:
+ case GL_RG8:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8_UNORM, target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_R8G8_UNORM;
+ return PIPE_FORMAT_NONE;
+
+ case GL_R16:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM, target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_R16_UNORM;
+ return PIPE_FORMAT_NONE;
+
+ case GL_RG16:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM, target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_R16G16_UNORM;
+ return PIPE_FORMAT_NONE;
+
+ case GL_COMPRESSED_RED_RGTC1:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_UNORM, target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_RGTC1_UNORM;
+ return PIPE_FORMAT_NONE;
+
+ case GL_COMPRESSED_SIGNED_RED_RGTC1:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC1_SNORM, target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_RGTC1_SNORM;
+ return PIPE_FORMAT_NONE;
+
+ case GL_COMPRESSED_RG_RGTC2:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_UNORM, target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_RGTC2_UNORM;
+ return PIPE_FORMAT_NONE;
+
+ case GL_COMPRESSED_SIGNED_RG_RGTC2:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_RGTC2_SNORM, target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_RGTC2_SNORM;
+ return PIPE_FORMAT_NONE;
+
+ /* 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.
+ */
+ case GL_RED_INTEGER_EXT:
+ case GL_GREEN_INTEGER_EXT:
+ case GL_BLUE_INTEGER_EXT:
+ case GL_ALPHA_INTEGER_EXT:
+ case GL_RGB_INTEGER_EXT:
+ case GL_RGBA_INTEGER_EXT:
+ case GL_BGR_INTEGER_EXT:
+ case GL_BGRA_INTEGER_EXT:
+ case GL_LUMINANCE_INTEGER_EXT:
+ case GL_LUMINANCE_ALPHA_INTEGER_EXT:
+ /* fall-through */
+ case GL_RGBA8I_EXT:
+ case GL_RGB8I_EXT:
+ case GL_ALPHA8I_EXT:
+ case GL_INTENSITY8I_EXT:
+ case GL_LUMINANCE8I_EXT:
+ case GL_LUMINANCE_ALPHA8I_EXT:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SSCALED,
+ target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_R8G8B8A8_SSCALED;
+ return PIPE_FORMAT_NONE;
+ case GL_RGBA16I_EXT:
+ case GL_RGB16I_EXT:
+ case GL_ALPHA16I_EXT:
+ case GL_INTENSITY16I_EXT:
+ case GL_LUMINANCE16I_EXT:
+ case GL_LUMINANCE_ALPHA16I_EXT:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_SSCALED,
+ target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_R16G16B16A16_SSCALED;
+ return PIPE_FORMAT_NONE;
+ case GL_RGBA32I_EXT:
+ case GL_RGB32I_EXT:
+ case GL_ALPHA32I_EXT:
+ case GL_INTENSITY32I_EXT:
+ case GL_LUMINANCE32I_EXT:
+ case GL_LUMINANCE_ALPHA32I_EXT:
+ /* xxx */
+ if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_SSCALED,
+ target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_R32G32B32A32_SSCALED;
+ return PIPE_FORMAT_NONE;
+
+ case GL_RGBA8UI_EXT:
+ case GL_RGB8UI_EXT:
+ case GL_ALPHA8UI_EXT:
+ case GL_INTENSITY8UI_EXT:
+ case GL_LUMINANCE8UI_EXT:
+ case GL_LUMINANCE_ALPHA8UI_EXT:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_USCALED,
+ target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_R8G8B8A8_USCALED;
+ return PIPE_FORMAT_NONE;
+
+ case GL_RGBA16UI_EXT:
+ case GL_RGB16UI_EXT:
+ case GL_ALPHA16UI_EXT:
+ case GL_INTENSITY16UI_EXT:
+ case GL_LUMINANCE16UI_EXT:
+ case GL_LUMINANCE_ALPHA16UI_EXT:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_USCALED,
+ target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_R16G16B16A16_USCALED;
+ return PIPE_FORMAT_NONE;
+
+ case GL_RGBA32UI_EXT:
+ case GL_RGB32UI_EXT:
+ case GL_ALPHA32UI_EXT:
+ case GL_INTENSITY32UI_EXT:
+ case GL_LUMINANCE32UI_EXT:
+ case GL_LUMINANCE_ALPHA32UI_EXT:
+ if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_USCALED,
+ target,
+ sample_count, bindings, geom_flags))
+ return PIPE_FORMAT_R32G32B32A32_USCALED;
+ return PIPE_FORMAT_NONE;
+
+ default:
+ 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, PIPE_TEXTURE_2D,
+ sample_count, usage);
+}
+
+
+/**
+ * Called via ctx->Driver.chooseTextureFormat().
+ */
+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 == GL_TRUE) {
+ if (_mesa_is_depth_format(internalFormat) ||
+ _mesa_is_depth_or_stencil_format(internalFormat))
+ bindings |= PIPE_BIND_DEPTH_STENCIL;
+ else
+ bindings |= PIPE_BIND_RENDER_TARGET;
+ }
+
+ pFormat = st_choose_format(screen, internalFormat,
+ 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,
+ 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);
+}
+
+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);
+ }
+}
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