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authorBrian <brian.paul@tungstengraphics.com>2008-02-23 16:17:17 -0700
committerBrian <brian.paul@tungstengraphics.com>2008-02-23 16:17:17 -0700
commit012391357fcbefd2b34e999eed91a129d5efd77c (patch)
tree2d2e639aeb24923af9108bb56daaf8356155d378 /src/gallium/drivers/softpipe/sp_quad.c
parent35ca45daba3906ac94fb879d2374d476ba2dac47 (diff)
gallium: disable early Z test if fragment shader contains KIL instruction.
Use tgsi_scan_shader() to determine if the fragment shader uses KIL or writes fragment.z
Diffstat (limited to 'src/gallium/drivers/softpipe/sp_quad.c')
-rw-r--r--src/gallium/drivers/softpipe/sp_quad.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/gallium/drivers/softpipe/sp_quad.c b/src/gallium/drivers/softpipe/sp_quad.c
index 15b5594547..142dbcc771 100644
--- a/src/gallium/drivers/softpipe/sp_quad.c
+++ b/src/gallium/drivers/softpipe/sp_quad.c
@@ -56,11 +56,12 @@ sp_build_depth_stencil(
void
sp_build_quad_pipeline(struct softpipe_context *sp)
{
- boolean early_depth_test =
+ boolean early_depth_test =
sp->depth_stencil->depth.enabled &&
sp->framebuffer.zsbuf &&
!sp->depth_stencil->alpha.enabled &&
- sp->fs->shader.output_semantic_name[0] != TGSI_SEMANTIC_POSITION;
+ !sp->fs->uses_kill &&
+ !sp->fs->writes_z;
/* build up the pipeline in reverse order... */