diff options
author | Dave Airlie <airlied@redhat.com> | 2009-02-13 01:11:25 +1000 |
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committer | Dave Airlie <airlied@redhat.com> | 2009-02-13 01:11:25 +1000 |
commit | 53116910b10e3b8a05f42970eff311c21808699f (patch) | |
tree | 6831e50a56a02fed324f8cb119e05d837e00d7cf /src/mesa/state_tracker/st_format.c | |
parent | 7e104f9cde94279a902b408e8d1cf21779b393a8 (diff) | |
parent | 0ccbc3c905f0594a35d72887a1f115e148aaa596 (diff) |
Merge remote branch 'origin/master' into radeon-rewrite
Conflicts:
configure.ac
src/mesa/drivers/dri/r200/r200_context.c
src/mesa/drivers/dri/r300/r300_render.c
Diffstat (limited to 'src/mesa/state_tracker/st_format.c')
-rw-r--r-- | src/mesa/state_tracker/st_format.c | 718 |
1 files changed, 718 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_format.c b/src/mesa/state_tracker/st_format.c new file mode 100644 index 0000000000..9e2d60c926 --- /dev/null +++ b/src/mesa/state_tracker/st_format.c @@ -0,0 +1,718 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * Copyright (c) 2008 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. + * + **************************************************************************/ + + +/** + * Texture Image-related functions. + * \author Brian Paul + */ + +#include "main/imports.h" +#include "main/context.h" +#include "main/texstore.h" +#include "main/texformat.h" +#include "main/enums.h" +#include "main/macros.h" + +#include "pipe/p_context.h" +#include "pipe/p_defines.h" +#include "pipe/p_screen.h" +#include "st_context.h" +#include "st_format.h" + +static GLuint +format_bits( + pipe_format_rgbazs_t info, + GLuint comp ) +{ + return pf_get_component_bits( (enum pipe_format) info, comp ); +} + +static GLuint +format_max_bits( + pipe_format_rgbazs_t info ) +{ + GLuint size = format_bits( info, PIPE_FORMAT_COMP_R ); + + size = MAX2( size, format_bits( info, PIPE_FORMAT_COMP_G ) ); + size = MAX2( size, format_bits( info, PIPE_FORMAT_COMP_B ) ); + size = MAX2( size, format_bits( info, PIPE_FORMAT_COMP_A ) ); + size = MAX2( size, format_bits( info, PIPE_FORMAT_COMP_Z ) ); + size = MAX2( size, format_bits( info, PIPE_FORMAT_COMP_S ) ); + return size; +} + +static GLuint +format_size( + pipe_format_rgbazs_t info ) +{ + return + format_bits( info, PIPE_FORMAT_COMP_R ) + + format_bits( info, PIPE_FORMAT_COMP_G ) + + format_bits( info, PIPE_FORMAT_COMP_B ) + + format_bits( info, PIPE_FORMAT_COMP_A ) + + format_bits( info, PIPE_FORMAT_COMP_Z ) + + format_bits( info, PIPE_FORMAT_COMP_S ); +} + +/* + * XXX temporary here + */ +GLboolean +st_get_format_info(enum pipe_format format, struct pipe_format_info *pinfo) +{ + if (pf_layout(format) == PIPE_FORMAT_LAYOUT_RGBAZS) { + pipe_format_rgbazs_t info; + + info = format; + +#if 0 + printf("%s\n", pf_name( format ) ); +#endif + + /* Data type */ + if (format == PIPE_FORMAT_A1R5G5B5_UNORM || format == PIPE_FORMAT_R5G6B5_UNORM) { + pinfo->datatype = GL_UNSIGNED_SHORT; + } + else { + GLuint size; + + size = format_max_bits( info ); + if (size == 8) { + if (pf_type(info) == PIPE_FORMAT_TYPE_UNORM) + pinfo->datatype = GL_UNSIGNED_BYTE; + else + pinfo->datatype = GL_BYTE; + } + else if (size == 16) { + if (pf_type(info) == PIPE_FORMAT_TYPE_UNORM) + pinfo->datatype = GL_UNSIGNED_SHORT; + else + pinfo->datatype = GL_SHORT; + } + else { + assert( size <= 32 ); + if (pf_type(info) == PIPE_FORMAT_TYPE_UNORM) + pinfo->datatype = GL_UNSIGNED_INT; + else + pinfo->datatype = GL_INT; + } + } + + /* Component bits */ + pinfo->red_bits = format_bits( info, PIPE_FORMAT_COMP_R ); + pinfo->green_bits = format_bits( info, PIPE_FORMAT_COMP_G ); + pinfo->blue_bits = format_bits( info, PIPE_FORMAT_COMP_B ); + pinfo->alpha_bits = format_bits( info, PIPE_FORMAT_COMP_A ); + pinfo->depth_bits = format_bits( info, PIPE_FORMAT_COMP_Z ); + pinfo->stencil_bits = format_bits( info, PIPE_FORMAT_COMP_S ); + pinfo->luminance_bits = 0; + pinfo->intensity_bits = 0; + + /* Format size */ + pinfo->size = format_size( info ) / 8; + + /* Luminance & Intensity bits */ + if( pf_swizzle_x(info) == PIPE_FORMAT_COMP_R && + pf_swizzle_y(info) == PIPE_FORMAT_COMP_R && + pf_swizzle_z(info) == PIPE_FORMAT_COMP_R ) { + if( pf_swizzle_w(info) == PIPE_FORMAT_COMP_R ) { + pinfo->intensity_bits = pinfo->red_bits; + } + else { + pinfo->luminance_bits = pinfo->red_bits; + } + pinfo->red_bits = 0; + } + + /* Base format */ + if (pinfo->depth_bits) { + if (pinfo->stencil_bits) { + pinfo->base_format = GL_DEPTH_STENCIL_EXT; + } + else { + pinfo->base_format = GL_DEPTH_COMPONENT; + } + } + else if (pinfo->stencil_bits) { + pinfo->base_format = GL_STENCIL_INDEX; + } + else { + pinfo->base_format = GL_RGBA; + } + } + else if (pf_layout(format) == PIPE_FORMAT_LAYOUT_YCBCR) { + pinfo->base_format = GL_YCBCR_MESA; + pinfo->datatype = GL_UNSIGNED_SHORT; + pinfo->size = 2; /* two bytes per "texel" */ + } + else { + /* compressed format? */ + assert(0); + } + +#if 0 + printf( + "ST_FORMAT: R(%u), G(%u), B(%u), A(%u), Z(%u), S(%u)\n", + pinfo->red_bits, + pinfo->green_bits, + pinfo->blue_bits, + pinfo->alpha_bits, + pinfo->depth_bits, + pinfo->stencil_bits ); +#endif + + pinfo->format = format; + + return GL_TRUE; +} + + +/** + * Return bytes per pixel for the given format. + */ +GLuint +st_sizeof_format(enum pipe_format format) +{ + struct pipe_format_info info; + if (!st_get_format_info( format, &info )) { + assert( 0 ); + return 0; + } + return info.size; +} + + +/** + * Return bytes per pixel for the given format. + */ +GLenum +st_format_datatype(enum pipe_format format) +{ + struct pipe_format_info info; + if (!st_get_format_info( format, &info )) { + assert( 0 ); + return 0; + } + return info.datatype; +} + + +enum pipe_format +st_mesa_format_to_pipe_format(GLuint mesaFormat) +{ + switch (mesaFormat) { + /* fix this */ + case MESA_FORMAT_ARGB8888_REV: + case MESA_FORMAT_ARGB8888: + return PIPE_FORMAT_A8R8G8B8_UNORM; + case MESA_FORMAT_ARGB1555: + return PIPE_FORMAT_A1R5G5B5_UNORM; + case MESA_FORMAT_ARGB4444: + return PIPE_FORMAT_A4R4G4B4_UNORM; + case MESA_FORMAT_RGB565: + return PIPE_FORMAT_R5G6B5_UNORM; + case MESA_FORMAT_AL88: + return PIPE_FORMAT_A8L8_UNORM; + case MESA_FORMAT_A8: + return PIPE_FORMAT_A8_UNORM; + case MESA_FORMAT_L8: + return PIPE_FORMAT_L8_UNORM; + case MESA_FORMAT_I8: + return PIPE_FORMAT_I8_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_Z24S8_UNORM; + case MESA_FORMAT_S8_Z24: + return PIPE_FORMAT_S8Z24_UNORM; + case MESA_FORMAT_YCBCR: + return PIPE_FORMAT_YCBCR; +#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_A8L8_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_R8G8B8A8_SRGB; + case MESA_FORMAT_SARGB8: + return PIPE_FORMAT_A8R8G8B8_SRGB; +#endif + default: + assert(0); + return 0; + } +} + +/** + * 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 tex_usage, + unsigned geom_flags) +{ + static const enum pipe_format colorFormats[] = { + PIPE_FORMAT_A8R8G8B8_UNORM, + PIPE_FORMAT_B8G8R8A8_UNORM, + PIPE_FORMAT_R8G8B8A8_UNORM, + PIPE_FORMAT_R5G6B5_UNORM + }; + uint i; + for (i = 0; i < Elements(colorFormats); i++) { + if (screen->is_format_supported( screen, colorFormats[i], target, tex_usage, geom_flags )) { + return colorFormats[i]; + } + } + return PIPE_FORMAT_NONE; +} + +/** + * 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 tex_usage, + unsigned geom_flags) +{ + static const enum pipe_format colorFormats[] = { + PIPE_FORMAT_A8R8G8B8_SRGB, + PIPE_FORMAT_B8G8R8A8_SRGB, + PIPE_FORMAT_R8G8B8A8_SRGB, + }; + uint i; + for (i = 0; i < Elements(colorFormats); i++) { + if (screen->is_format_supported( screen, colorFormats[i], target, tex_usage, geom_flags )) { + return colorFormats[i]; + } + } + return PIPE_FORMAT_NONE; +} + +/** + * Search list of formats for first RGBA format with >8 bits/channel. + */ +static enum pipe_format +default_deep_rgba_format(struct pipe_screen *screen, + enum pipe_texture_target target, + unsigned tex_usage, + unsigned geom_flags) +{ + if (screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_SNORM, target, tex_usage, geom_flags)) { + return PIPE_FORMAT_R16G16B16A16_SNORM; + } + if (tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET) + return default_rgba_format(screen, target, tex_usage, geom_flags); + else + return PIPE_FORMAT_NONE; +} + + +/** + * Find an Z format supported by the context/winsys. + */ +static enum pipe_format +default_depth_format(struct pipe_screen *screen, + enum pipe_texture_target target, + unsigned tex_usage, + unsigned geom_flags) +{ + static const enum pipe_format zFormats[] = { + PIPE_FORMAT_Z16_UNORM, + PIPE_FORMAT_Z32_UNORM, + PIPE_FORMAT_S8Z24_UNORM, + PIPE_FORMAT_Z24S8_UNORM + }; + uint i; + for (i = 0; i < Elements(zFormats); i++) { + if (screen->is_format_supported( screen, zFormats[i], target, tex_usage, geom_flags )) { + return zFormats[i]; + } + } + 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. + * \param target one of PIPE_TEXTURE_x + * \param tex_usage either PIPE_TEXTURE_USAGE_RENDER_TARGET + * or PIPE_TEXTURE_USAGE_SAMPLER + */ +enum pipe_format +st_choose_format(struct pipe_context *pipe, GLint internalFormat, + enum pipe_texture_target target, unsigned tex_usage) +{ + struct pipe_screen *screen = pipe->screen; + unsigned geom_flags = 0; + + switch (internalFormat) { + case 4: + case GL_RGBA: + case GL_COMPRESSED_RGBA: + case 3: + case GL_RGB: + case GL_COMPRESSED_RGB: + case GL_RGBA8: + case GL_RGB10_A2: + case GL_RGBA12: + return default_rgba_format( screen, target, tex_usage, geom_flags ); + case GL_RGBA16: + if (tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET) + return default_deep_rgba_format( screen, target, tex_usage, geom_flags ); + else + return default_rgba_format( screen, target, tex_usage, geom_flags ); + + case GL_RGBA4: + case GL_RGBA2: + if (screen->is_format_supported( screen, PIPE_FORMAT_A4R4G4B4_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_A4R4G4B4_UNORM; + return default_rgba_format( screen, target, tex_usage, geom_flags ); + + case GL_RGB5_A1: + if (screen->is_format_supported( screen, PIPE_FORMAT_A1R5G5B5_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_A1R5G5B5_UNORM; + return default_rgba_format( screen, target, tex_usage, geom_flags ); + + case GL_RGB8: + case GL_RGB10: + case GL_RGB12: + case GL_RGB16: + return default_rgba_format( screen, target, tex_usage, geom_flags ); + + case GL_RGB5: + case GL_RGB4: + case GL_R3_G3_B2: + if (screen->is_format_supported( screen, PIPE_FORMAT_A1R5G5B5_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_A1R5G5B5_UNORM; + if (screen->is_format_supported( screen, PIPE_FORMAT_R5G6B5_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_R5G6B5_UNORM; + return default_rgba_format( screen, target, tex_usage, geom_flags ); + + case GL_ALPHA: + case GL_ALPHA4: + case GL_ALPHA8: + case GL_ALPHA12: + case GL_ALPHA16: + case GL_COMPRESSED_ALPHA: + if (screen->is_format_supported( screen, PIPE_FORMAT_A8_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_A8_UNORM; + return default_rgba_format( screen, target, tex_usage, geom_flags ); + + case 1: + case GL_LUMINANCE: + case GL_LUMINANCE4: + case GL_LUMINANCE8: + case GL_LUMINANCE12: + case GL_LUMINANCE16: + case GL_COMPRESSED_LUMINANCE: + if (screen->is_format_supported( screen, PIPE_FORMAT_L8_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_L8_UNORM; + return default_rgba_format( screen, target, tex_usage, geom_flags ); + + case 2: + case GL_LUMINANCE_ALPHA: + case GL_LUMINANCE4_ALPHA4: + case GL_LUMINANCE6_ALPHA2: + case GL_LUMINANCE8_ALPHA8: + case GL_LUMINANCE12_ALPHA4: + case GL_LUMINANCE12_ALPHA12: + case GL_LUMINANCE16_ALPHA16: + case GL_COMPRESSED_LUMINANCE_ALPHA: + if (screen->is_format_supported( screen, PIPE_FORMAT_A8L8_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_A8L8_UNORM; + return default_rgba_format( screen, target, tex_usage, geom_flags ); + + case GL_INTENSITY: + case GL_INTENSITY4: + case GL_INTENSITY8: + case GL_INTENSITY12: + case GL_INTENSITY16: + case GL_COMPRESSED_INTENSITY: + if (screen->is_format_supported( screen, PIPE_FORMAT_I8_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_I8_UNORM; + return default_rgba_format( screen, target, tex_usage, geom_flags ); + + case GL_YCBCR_MESA: + if (screen->is_format_supported(screen, PIPE_FORMAT_YCBCR, + target, tex_usage, geom_flags)) { + return PIPE_FORMAT_YCBCR; + } + if (screen->is_format_supported(screen, PIPE_FORMAT_YCBCR_REV, + target, tex_usage, geom_flags)) { + return PIPE_FORMAT_YCBCR_REV; + } + return PIPE_FORMAT_NONE; + + case GL_RGB_S3TC: + case GL_RGB4_S3TC: + case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: + return PIPE_FORMAT_DXT1_RGB; + + case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: + return PIPE_FORMAT_DXT1_RGBA; + + case GL_RGBA_S3TC: + case GL_RGBA4_S3TC: + case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: + return PIPE_FORMAT_DXT3_RGBA; + + case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: + return PIPE_FORMAT_DXT5_RGBA; + +#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, tex_usage, geom_flags )) + return PIPE_FORMAT_Z16_UNORM; + /* fall-through */ + case GL_DEPTH_COMPONENT24: + if (screen->is_format_supported( screen, PIPE_FORMAT_S8Z24_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_S8Z24_UNORM; + if (screen->is_format_supported( screen, PIPE_FORMAT_Z24S8_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_Z24S8_UNORM; + /* fall-through */ + case GL_DEPTH_COMPONENT32: + if (screen->is_format_supported( screen, PIPE_FORMAT_Z32_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_Z32_UNORM; + /* fall-through */ + case GL_DEPTH_COMPONENT: + return default_depth_format( screen, target, tex_usage, 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: + if (screen->is_format_supported( screen, PIPE_FORMAT_S8_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_S8_UNORM; + if (screen->is_format_supported( screen, PIPE_FORMAT_S8Z24_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_S8Z24_UNORM; + if (screen->is_format_supported( screen, PIPE_FORMAT_Z24S8_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_Z24S8_UNORM; + return PIPE_FORMAT_NONE; + + case GL_DEPTH_STENCIL_EXT: + case GL_DEPTH24_STENCIL8_EXT: + if (screen->is_format_supported( screen, PIPE_FORMAT_S8Z24_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_S8Z24_UNORM; + if (screen->is_format_supported( screen, PIPE_FORMAT_Z24S8_UNORM, target, tex_usage, geom_flags )) + return PIPE_FORMAT_Z24S8_UNORM; + return PIPE_FORMAT_NONE; + + case GL_SRGB_EXT: + case GL_SRGB8_EXT: + case GL_COMPRESSED_SRGB_EXT: + case GL_COMPRESSED_SRGB_ALPHA_EXT: + case GL_SRGB_ALPHA_EXT: + case GL_SRGB8_ALPHA8_EXT: + return default_srgba_format( screen, target, tex_usage, geom_flags ); + case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT: + return PIPE_FORMAT_DXT1_SRGB; + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: + return PIPE_FORMAT_DXT1_SRGBA; + case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: + return PIPE_FORMAT_DXT3_SRGBA; + 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_A8L8_SRGB, target, tex_usage, geom_flags )) + return PIPE_FORMAT_A8L8_SRGB; + return default_srgba_format( screen, target, tex_usage, geom_flags ); + + case GL_SLUMINANCE_EXT: + case GL_SLUMINANCE8_EXT: + if (screen->is_format_supported( screen, PIPE_FORMAT_L8_SRGB, target, tex_usage, geom_flags )) + return PIPE_FORMAT_L8_SRGB; + return default_srgba_format( screen, target, tex_usage, geom_flags ); + + default: + return PIPE_FORMAT_NONE; + } +} + + +static GLboolean +is_stencil_format(GLenum format) +{ + switch (format) { + case GL_STENCIL_INDEX: + case GL_STENCIL_INDEX1_EXT: + case GL_STENCIL_INDEX4_EXT: + case GL_STENCIL_INDEX8_EXT: + case GL_STENCIL_INDEX16_EXT: + case GL_DEPTH_STENCIL_EXT: + case GL_DEPTH24_STENCIL8_EXT: + return GL_TRUE; + default: + return GL_FALSE; + } +} + +/** + * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces. + */ +enum pipe_format +st_choose_renderbuffer_format(struct pipe_context *pipe, GLint internalFormat) +{ + uint usage; + if (is_stencil_format(internalFormat)) + usage = PIPE_TEXTURE_USAGE_DEPTH_STENCIL; + else + usage = PIPE_TEXTURE_USAGE_RENDER_TARGET; + return st_choose_format(pipe, internalFormat, PIPE_TEXTURE_2D, usage); +} + + +static const struct gl_texture_format * +translate_gallium_format_to_mesa_format(enum pipe_format format) +{ + switch (format) { + case PIPE_FORMAT_A8R8G8B8_UNORM: + return &_mesa_texformat_argb8888; + case PIPE_FORMAT_A1R5G5B5_UNORM: + return &_mesa_texformat_argb1555; + case PIPE_FORMAT_A4R4G4B4_UNORM: + return &_mesa_texformat_argb4444; + case PIPE_FORMAT_R5G6B5_UNORM: + return &_mesa_texformat_rgb565; + case PIPE_FORMAT_A8L8_UNORM: + return &_mesa_texformat_al88; + case PIPE_FORMAT_A8_UNORM: + return &_mesa_texformat_a8; + case PIPE_FORMAT_L8_UNORM: + return &_mesa_texformat_l8; + case PIPE_FORMAT_I8_UNORM: + return &_mesa_texformat_i8; + case PIPE_FORMAT_Z16_UNORM: + return &_mesa_texformat_z16; + case PIPE_FORMAT_Z32_UNORM: + return &_mesa_texformat_z32; + case PIPE_FORMAT_Z24S8_UNORM: + return &_mesa_texformat_z24_s8; + case PIPE_FORMAT_S8Z24_UNORM: + return &_mesa_texformat_s8_z24; + case PIPE_FORMAT_YCBCR: + return &_mesa_texformat_ycbcr; + case PIPE_FORMAT_YCBCR_REV: + return &_mesa_texformat_ycbcr_rev; +#if FEATURE_texture_s3tc + case PIPE_FORMAT_DXT1_RGB: + return &_mesa_texformat_rgb_dxt1; + case PIPE_FORMAT_DXT1_RGBA: + return &_mesa_texformat_rgba_dxt1; + case PIPE_FORMAT_DXT3_RGBA: + return &_mesa_texformat_rgba_dxt3; + case PIPE_FORMAT_DXT5_RGBA: + return &_mesa_texformat_rgba_dxt5; +#if FEATURE_EXT_texture_sRGB + case PIPE_FORMAT_DXT1_SRGB: + return &_mesa_texformat_srgb_dxt1; + case PIPE_FORMAT_DXT1_SRGBA: + return &_mesa_texformat_srgba_dxt1; + case PIPE_FORMAT_DXT3_SRGBA: + return &_mesa_texformat_srgba_dxt3; + case PIPE_FORMAT_DXT5_SRGBA: + return &_mesa_texformat_srgba_dxt5; +#endif +#endif +#if FEATURE_EXT_texture_sRGB + case PIPE_FORMAT_A8L8_SRGB: + return &_mesa_texformat_sla8; + case PIPE_FORMAT_L8_SRGB: + return &_mesa_texformat_sl8; + case PIPE_FORMAT_R8G8B8_SRGB: + return &_mesa_texformat_srgb8; + case PIPE_FORMAT_R8G8B8A8_SRGB: + return &_mesa_texformat_srgba8; + case PIPE_FORMAT_A8R8G8B8_SRGB: + return &_mesa_texformat_sargb8; +#endif + /* XXX add additional cases */ + default: + assert(0); + return NULL; + } +} + + +/** + * Called via ctx->Driver.chooseTextureFormat(). + */ +const struct gl_texture_format * +st_ChooseTextureFormat(GLcontext *ctx, GLint internalFormat, + GLenum format, GLenum type) +{ + enum pipe_format pFormat; + + (void) format; + (void) type; + + pFormat = st_choose_format(ctx->st->pipe, internalFormat, PIPE_TEXTURE_2D, + PIPE_TEXTURE_USAGE_SAMPLER); + if (pFormat == PIPE_FORMAT_NONE) + return NULL; + + return translate_gallium_format_to_mesa_format(pFormat); +} |