diff options
| author | Roland Scheidegger <[email protected]> | 2010-01-21 20:48:13 +0100 |
|---|---|---|
| committer | Roland Scheidegger <[email protected]> | 2010-01-21 20:48:13 +0100 |
| commit | 629bb3fa32f6ca1f8cf43222f4b4c399c91b3b6a (patch) | |
| tree | 16627d331ec7ad1465c161d6701c40aa66af00d8 /src/gallium | |
| parent | c6c9d3b0914e2c3d8585123055c97d8ac3452fe5 (diff) | |
docs: enhance blend documentation
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/docs/source/cso/blend.rst | 39 |
1 files changed, 36 insertions, 3 deletions
diff --git a/src/gallium/docs/source/cso/blend.rst b/src/gallium/docs/source/cso/blend.rst index fd9e4a1e2d5..3fc573054e6 100644 --- a/src/gallium/docs/source/cso/blend.rst +++ b/src/gallium/docs/source/cso/blend.rst @@ -6,9 +6,42 @@ Blend This state controls blending of the final fragments into the target rendering buffers. -XXX it is unresolved what behavior should result if blend_enable is off. - Members ------- -XXX undocumented members +independent_blend_enable + If enabled, blend state is different for each render target, and + for each render target set in the respective member of the rt array. + If disabled, blend state is the same for all render targets, and only + the first member of the rt array contains valid data. +logicop_enable + Enables logic ops. Cannot be enabled at the same time as blending, and + is always the same for all render targets. +logicop_func + The logic operation to use if logic ops are enabled. One of PIPE_LOGICOP. +dither + Whether dithering is enabled. +rt + Contains the per rendertarget blend state. + +per rendertarget members +------------------------ + +blend_enable + If blending is enabled, perform a blend calculation according to blend + functions and source/destination factors. Otherwise, the incoming fragment + color gets passed unmodified (but colormask still applies). +rgb_func + The blend function to use for rgb channels. One of PIPE_BLEND. +rgb_src_factor + The blend source factor to use for rgb channels. One of PIPE_BLENDFACTOR. +rgb_dst_factor + The blend destination factor to use for rgb channels. One of PIPE_BLENDFACTOR. +alpha_func + The blend function to use for the alpha channel. One of PIPE_BLEND. +alpha_src_factor + The blend source factor to use for the alpha channel. One of PIPE_BLENDFACTOR. +alpha_dst_factor + The blend destination factor to use for alpha channel. One of PIPE_BLENDFACTOR. +colormask + Bitmask of which channels to write. Combination of PIPE_MASK bits. |