diff options
| author | Michal Krol <michal@tungstengraphics.com> | 2007-11-18 18:20:20 +0000 |
|---|---|---|
| committer | Michal Krol <michal@tungstengraphics.com> | 2007-11-18 18:20:20 +0000 |
| commit | 7f718f047676e88b660618784f256a96f7e8ed58 (patch) | |
| tree | 0e7c6676b64df5394eb0d09073a934cc4bbaa408 /src/mesa/pipe/softpipe/sp_quad.h | |
| parent | ca7f68a7cf25a51f382bba8c42d8c6ab7db57b5d (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/softpipe/sp_quad.h')
| -rw-r--r-- | src/mesa/pipe/softpipe/sp_quad.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mesa/pipe/softpipe/sp_quad.h b/src/mesa/pipe/softpipe/sp_quad.h index 534541122b..f1e0281764 100644 --- a/src/mesa/pipe/softpipe/sp_quad.h +++ b/src/mesa/pipe/softpipe/sp_quad.h @@ -51,6 +51,7 @@ struct quad_stage { struct quad_stage *sp_quad_polygon_stipple_stage( struct softpipe_context *softpipe ); +struct quad_stage *sp_quad_earlyz_stage( struct softpipe_context *softpipe ); struct quad_stage *sp_quad_shade_stage( struct softpipe_context *softpipe ); struct quad_stage *sp_quad_alpha_test_stage( struct softpipe_context *softpipe ); struct quad_stage *sp_quad_stencil_test_stage( struct softpipe_context *softpipe ); |