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st/mesa: use RGTC for GL_COMPRESSED_RED/RG if possible

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With proper fallback formats.
This commit is contained in:
Marek Olšák
2011-03-01 21:15:38 +01:00
parent e118fdc9e2
commit c37e283423
1 changed files with 8 additions and 2 deletions
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src/mesa/state_tracker/st_format.c
+8 -2
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@@ -674,8 +674,6 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
}
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)
@@ -871,10 +869,14 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
return PIPE_FORMAT_R16G16_UNORM;
return PIPE_FORMAT_NONE;
case GL_COMPRESSED_RED:
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;
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_COMPRESSED_SIGNED_RED_RGTC1:
@@ -883,10 +885,14 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
return PIPE_FORMAT_RGTC1_SNORM;
return PIPE_FORMAT_NONE;
case GL_COMPRESSED_RG:
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;
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_COMPRESSED_SIGNED_RG_RGTC2: