diff options
| -rw-r--r-- | src/mesa/pipe/draw/draw_vertex_shader.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/mesa/pipe/draw/draw_vertex_shader.c b/src/mesa/pipe/draw/draw_vertex_shader.c index eef71a7a4a3..5294d38f473 100644 --- a/src/mesa/pipe/draw/draw_vertex_shader.c +++ b/src/mesa/pipe/draw/draw_vertex_shader.c @@ -51,7 +51,18 @@ compute_clipmask(const float *clip, /*const*/ float plane[][4], unsigned nr) unsigned mask = 0; unsigned i; - for (i = 0; i < nr; i++) { + /* Do the hardwired planes first: + */ + if (-clip[0] + clip[3] < 0) mask |= CLIP_RIGHT_BIT; + if ( clip[0] + clip[3] < 0) mask |= CLIP_LEFT_BIT; + if (-clip[1] + clip[3] < 0) mask |= CLIP_TOP_BIT; + if ( clip[1] + clip[3] < 0) mask |= CLIP_BOTTOM_BIT; + if (-clip[2] + clip[3] < 0) mask |= CLIP_FAR_BIT; + if ( clip[2] + clip[3] < 0) mask |= CLIP_NEAR_BIT; + + /* Followed by any remaining ones: + */ + for (i = 6; i < nr; i++) { if (dot4(clip, plane[i]) < 0) mask |= (1<<i); } |