diff options
| author | Brian Paul <brian.paul@tungstengraphics.com> | 2008-06-18 14:50:35 -0600 |
|---|---|---|
| committer | Brian Paul <brian.paul@tungstengraphics.com> | 2008-06-18 14:55:12 -0600 |
| commit | 7d7f3e2c9451b2233c196d82d523c50b5d2616cc (patch) | |
| tree | 74d0cb7a84b4e353d09d71dbf515cc472a04bc89 /src/gallium/auxiliary/draw/draw_pt_varray.c | |
| parent | b623fa9e2d6f97f9febc978c158d790b26e175a7 (diff) | |
gallium: split long prims into chunks with an even number of vertices
This fixes culling "parity" errors when splitting long tri strips. Splitting
strips into chunks with an odd number of vertices causes front/back-face
orientation to get reversed and upsets culling.
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_pt_varray.c')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pt_varray.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pt_varray.c b/src/gallium/auxiliary/draw/draw_pt_varray.c index 4479963db1..2cc08a9e93 100644 --- a/src/gallium/auxiliary/draw/draw_pt_varray.c +++ b/src/gallium/auxiliary/draw/draw_pt_varray.c @@ -147,6 +147,10 @@ static void varray_prepare(struct draw_pt_front_end *frontend, varray->middle = middle; middle->prepare(middle, varray->output_prim, opt, &varray->driver_fetch_max ); + + /* check that the max is even */ + assert((varray->driver_fetch_max & 1) == 0); + varray->fetch_max = MIN2(FETCH_MAX, varray->driver_fetch_max); } |