diff options
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_pipe_cull.c')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pipe_cull.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pipe_cull.c b/src/gallium/auxiliary/draw/draw_pipe_cull.c index dc66c65a56..bf84ce30ed 100644 --- a/src/gallium/auxiliary/draw/draw_pipe_cull.c +++ b/src/gallium/auxiliary/draw/draw_pipe_cull.c @@ -40,7 +40,8 @@ struct cull_stage { struct draw_stage stage; - unsigned winding; /**< which winding(s) to cull (one of PIPE_WINDING_x) */ + unsigned cull_face; /**< which face(s) to cull (one of PIPE_FACE_x) */ + unsigned front_ccw; }; @@ -73,9 +74,12 @@ static void cull_tri( struct draw_stage *stage, /* if det < 0 then Z points toward the camera and the triangle is * counter-clockwise winding. */ - unsigned winding = (header->det < 0) ? PIPE_WINDING_CCW : PIPE_WINDING_CW; + unsigned ccw = (header->det < 0); + unsigned face = ((ccw == cull_stage(stage)->front_ccw) ? + PIPE_FACE_FRONT : + PIPE_FACE_BACK); - if ((winding & cull_stage(stage)->winding) == 0) { + if ((face & cull_stage(stage)->cull_face) == 0) { /* triangle is not culled, pass to next stage */ stage->next->tri( stage->next, header ); } @@ -88,7 +92,8 @@ static void cull_first_tri( struct draw_stage *stage, { struct cull_stage *cull = cull_stage(stage); - cull->winding = stage->draw->rasterizer->cull_mode; + cull->cull_face = stage->draw->rasterizer->cull_face; + cull->front_ccw = stage->draw->rasterizer->front_ccw; stage->tri = cull_tri; stage->tri( stage, header ); |