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| author | Brian Paul <brianp@vmware.com> | 2010-05-05 18:19:06 -0600 |
|---|---|---|
| committer | Brian Paul <brianp@vmware.com> | 2010-05-05 18:19:06 -0600 |
| commit | cb136a93aba4dc64db7e446b0fbc36c9172e4017 (patch) | |
| tree | f899c682980b4af56e4dd0c7cd2d08cefb4efce3 /src/gallium/drivers/softpipe/sp_setup.c | |
| parent | a8bb49562938e94459f398a1733a76eb9c690f6c (diff) | |
gallium: rework provoking vertex code
Builds on commit ddb0e18f6c5582d4d2cc59ffd16ad9c4639ed059 and fixes
regressions in glean clipFlat test.
We assume that Gallium drivers observe flatshade_first for all triangles
and that all the assorted per-triangle calls in the 'draw' module also
follow flatshade_first. Everything else builds on those rules.
Gallium does not use follow flatshade_first for GL quads, quad strips
and polygons; the "last" vertex is always the provoking vertex for those
prims. So now there are separate QUAD_FIRST_PV and QUAD_LAST_PV macros
in the draw primitive decomposition code instead of one QUAD macro.
Diffstat (limited to 'src/gallium/drivers/softpipe/sp_setup.c')
| -rw-r--r-- | src/gallium/drivers/softpipe/sp_setup.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/gallium/drivers/softpipe/sp_setup.c b/src/gallium/drivers/softpipe/sp_setup.c index 86354664e4..35ef9e698d 100644 --- a/src/gallium/drivers/softpipe/sp_setup.c +++ b/src/gallium/drivers/softpipe/sp_setup.c @@ -304,7 +304,10 @@ setup_sort_vertices(struct setup_context *setup, const float (*v1)[4], const float (*v2)[4]) { - setup->vprovoke = v2; + if (setup->softpipe->rasterizer->flatshade_first) + setup->vprovoke = v0; + else + setup->vprovoke = v2; /* determine bottom to top order of vertices */ { |