diff options
author | Campbell Barton <ideasman42@gmail.com> | 2021-06-20 06:47:53 +0300 |
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committer | Campbell Barton <ideasman42@gmail.com> | 2021-06-20 07:39:13 +0300 |
commit | 2d60c496a200288f100c11845ccb196f04e45ba3 (patch) | |
tree | 4f115960d47a2ec92fd584d746da3a9182c87082 /source/blender/blenkernel | |
parent | 513f566b40a5bde4d89797aecf7c0ad3e4d1a20b (diff) |
Mesh: minor optimization to concave quad check for tessellation
Use the face normal (when available) for a faster concave quad test.
Diffstat (limited to 'source/blender/blenkernel')
-rw-r--r-- | source/blender/blenkernel/intern/mesh_tessellate.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/source/blender/blenkernel/intern/mesh_tessellate.c b/source/blender/blenkernel/intern/mesh_tessellate.c index 98a93dbc4b5..0cd1b211e4d 100644 --- a/source/blender/blenkernel/intern/mesh_tessellate.c +++ b/source/blender/blenkernel/intern/mesh_tessellate.c @@ -476,10 +476,19 @@ BLI_INLINE void mesh_calc_tessellation_for_face_impl(const MLoop *mloop, ML_TO_MLT(0, 2, 3); MLoopTri *mlt_b = mlt; - if (UNLIKELY(is_quad_flip_v3_first_third_fast(mvert[mloop[mlt_a->tri[0]].v].co, - mvert[mloop[mlt_a->tri[1]].v].co, - mvert[mloop[mlt_a->tri[2]].v].co, - mvert[mloop[mlt_b->tri[2]].v].co))) { + if (UNLIKELY(face_normal ? is_quad_flip_v3_first_third_fast_with_normal( + /* Simpler calculation (using the normal). */ + mvert[mloop[mlt_a->tri[0]].v].co, + mvert[mloop[mlt_a->tri[1]].v].co, + mvert[mloop[mlt_a->tri[2]].v].co, + mvert[mloop[mlt_b->tri[2]].v].co, + normal_precalc) : + is_quad_flip_v3_first_third_fast( + /* Expensive calculation (no normal). */ + mvert[mloop[mlt_a->tri[0]].v].co, + mvert[mloop[mlt_a->tri[1]].v].co, + mvert[mloop[mlt_a->tri[2]].v].co, + mvert[mloop[mlt_b->tri[2]].v].co))) { /* Flip out of degenerate 0-2 state. */ mlt_a->tri[2] = mlt_b->tri[2]; mlt_b->tri[0] = mlt_a->tri[1]; |