diff options
| author | Ian Romanick <[email protected]> | 2011-04-02 18:56:33 -0700 |
|---|---|---|
| committer | Ian Romanick <[email protected]> | 2011-04-04 15:18:37 -0700 |
| commit | e397b3a7c051b70a574e34096b70fc98e4e84b2c (patch) | |
| tree | f27442d5b3a7723c891e88f91861ef9c6022f3b1 /src/mesa/main/texformat.c | |
| parent | ad3fbac00bb4430aa26f4dbd3a795715b0fc7fef (diff) | |
mesa: Add fall-back formats for unsupported snorm formats
This is always the way with real hardware and desktop OpenGL. Some
hardware can't do some formats natively. The alpha-only, luminance,
and intensity formats are usually the most problematic. Some sized
formats can also be problematic. This patch provides fall-back
formats for those that are not natively supported.
At some point it would be interesting to try providing
device-independent conversions using EXT_texture_swizzle. The drivers
that support EXT_texture_swizzle could, for example, see
GL_LUMINANCE16_SNORM as MESA_FORMAT_SIGNED_R16 with a { r, r, r, 1 }
swizzle. Care would need to be taken to prevent issues with using
those textures for FBO rendering.
This is the rest of the fix for glean's pixelFormats test on i965.
Reviewed-by: Marek Olšák <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Diffstat (limited to 'src/mesa/main/texformat.c')
| -rw-r--r-- | src/mesa/main/texformat.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/src/mesa/main/texformat.c b/src/mesa/main/texformat.c index 8b7b4ff475d..da907455b86 100644 --- a/src/mesa/main/texformat.c +++ b/src/mesa/main/texformat.c @@ -402,7 +402,7 @@ _mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat, case GL_RGB_SNORM: case GL_RGB8_SNORM: RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888); - break; + /* FALLTHROUGH */ case GL_RGBA_SNORM: case GL_RGBA8_SNORM: RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888); @@ -411,18 +411,27 @@ _mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat, case GL_ALPHA_SNORM: case GL_ALPHA8_SNORM: RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A8); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV); break; case GL_LUMINANCE_SNORM: case GL_LUMINANCE8_SNORM: RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L8); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV); break; case GL_LUMINANCE_ALPHA_SNORM: case GL_LUMINANCE8_ALPHA8_SNORM: RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL88); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV); break; case GL_INTENSITY_SNORM: case GL_INTENSITY8_SNORM: RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I8); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV); break; case GL_R16_SNORM: RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R16); @@ -432,21 +441,32 @@ _mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat, break; case GL_RGB16_SNORM: RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGB_16); - break; + /* FALLTHROUGH */ case GL_RGBA16_SNORM: RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV); break; case GL_ALPHA16_SNORM: RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A16); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV); break; case GL_LUMINANCE16_SNORM: RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L16); - break; + /* FALLTHROUGH */ case GL_LUMINANCE16_ALPHA16_SNORM: RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL1616); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV); break; case GL_INTENSITY16_SNORM: RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I16); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888); + RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV); break; default: ; /* fall-through */ |