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authorMichal Krol <michal@tungstengraphics.com>2007-11-18 18:20:20 +0000
committerMichal Krol <michal@tungstengraphics.com>2007-11-18 18:20:20 +0000
commit7f718f047676e88b660618784f256a96f7e8ed58 (patch)
tree0e7c6676b64df5394eb0d09073a934cc4bbaa408 /src/mesa/pipe/p_defines.h
parentca7f68a7cf25a51f382bba8c42d8c6ab7db57b5d (diff)
Implement early depth test.
Early depth test is enabled when depth test is enabled and alpha test is disabled and fragment shader does not write depth. The early-z is implemented by moving the depth test stage just before the fragment shader stage and prepending it with an earlyz stage, introduced with this commit. The earlyz stage prepares the quad->outputs.depth for the following depth test stage by interpolating Z position, just as the fragment shader would do.
Diffstat (limited to 'src/mesa/pipe/p_defines.h')
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