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authorIan Romanick <[email protected]>2012-12-01 11:06:48 -0800
committerIan Romanick <[email protected]>2013-01-04 17:39:05 -0800
commit4b92379da213c85998643997deef945b6e7fb7a7 (patch)
tree19bee2103aa828c6919bc7f625c4fdb8cfd62c91 /src/mesa/main/texturebarrier.h
parent69c2528b8374156adc45c427faaa59cee88a6541 (diff)
mesa: Disallow deprecated SNORM formats for renderbuffers
The OpenGL 3.2 core profile spec says: "The following base internal formats from table 3.11 are color-renderable: RED, RG, RGB, and RGBA. The sized internal formats from table 3.12 that have a color-renderable base internal format are also color-renderable. No other formats, including compressed internal formats, are color-renderable." The OpenGL 3.2 compatibility profile spec says (only ALPHA is added): "The following base internal formats from table 3.16 are color-renderable: ALPHA, RED, RG, RGB, and RGBA. The sized internal formats from table 3.17 that have a color-renderable base internal format are also color-renderable. No other formats, including compressed internal formats, are color-renderable." Table 3.12 in the core profile spec and table 3.17 in the compatibility profile spec list SNORM formats as having a base internal format of RED, RG, RGB, or RGBA. From this we infer that they should also be color renderable. The OpenGL ES 3.0 spec says: "An internal format is color-renderable if it is one of the formats from table 3.12 noted as color-renderable or if it is unsized format RGBA or RGB. No other formats, including compressed internal formats, are color-renderable." In the OpenGL ES 3.0 spec, none of the SNORM formats have "color- renderable" marked in table 3.12. The RGB I and UI formats also are not color-renderable in ES3, but we'll save that change for another patch. Both NVIDIA's closed-source driver (version 304.64) and AMD's closed-source driver (Catalyst 12.6 on HD 3650) reject *all* SNORM formats for renderbuffers in OpenGL 3.3 compatibility profiles. v2: Move {RED,RG,RGB,RGBA}_SNORM changes from the this commit to the next commit. Based on suggestions from Ken. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Marek Olšák <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]> Reviewed-by: Eric Anholt <[email protected]>
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