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st/mesa: use DXT SRGB formats for COMPRESSED_SRGB

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And also check if the formats are supported to return something meaningful
if compression cannot be used.
This commit is contained in:
Marek Olšák
2010-12-21 06:41:59 +01:00
parent bf15ad3782
commit 3f9e78ac39
1 changed files with 16 additions and 4 deletions
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20
src/mesa/state_tracker/st_format.c
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@@ -717,18 +717,30 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
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, sample_count, bindings,
geom_flags );
case GL_COMPRESSED_SRGB_EXT:
case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
return PIPE_FORMAT_DXT1_SRGB;
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:
return PIPE_FORMAT_DXT3_SRGBA;
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;