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author | Campbell Barton <ideasman42@gmail.com> | 2013-05-30 21:36:43 +0400 |
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committer | Campbell Barton <ideasman42@gmail.com> | 2013-05-30 21:36:43 +0400 |
commit | 09e11ad6ef1187d581b64a9ac6ebbbb6f056f7d9 (patch) | |
tree | 7f3100eed9f03496573b80ead9a8f3cf32e75b3b /source/blender/blenkernel/BKE_DerivedMesh.h | |
parent | 1be293629833a43a5ecf3a76c6ed838d183a2683 (diff) |
modifier stack: lazy initialize normals
many modifiers were calculating normals, when those normals were ignored by the next modifier.
now flag normals as dirty and recalculate for modifiers that set use `dependsOnNormals()` callback.
Quick test on mesh with 12 modifiers (mostly build type), calculated normals 6 times, now it only runs once - so this will give some speedup too.
Diffstat (limited to 'source/blender/blenkernel/BKE_DerivedMesh.h')
-rw-r--r-- | source/blender/blenkernel/BKE_DerivedMesh.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/source/blender/blenkernel/BKE_DerivedMesh.h b/source/blender/blenkernel/BKE_DerivedMesh.h index f0df766ffde..668eac5e8bc 100644 --- a/source/blender/blenkernel/BKE_DerivedMesh.h +++ b/source/blender/blenkernel/BKE_DerivedMesh.h @@ -160,7 +160,10 @@ typedef enum DMDirtyFlag { * without actually rebuilding dm (hence by defautl keeping same GPUDrawObject, and same colors * buffer, which prevents update during a stroke!). */ DM_DIRTY_MCOL_UPDATE_DRAW = 1 << 1, -} DMDirtyFlag; + + /* check this with modifier dependsOnNormals callback to see if normals need recalculation */ + DM_DIRTY_NORMALS = 1 << 2, +} DMDirtyFlag; typedef struct DerivedMesh DerivedMesh; struct DerivedMesh { @@ -560,6 +563,7 @@ void DM_free_poly_data(struct DerivedMesh *dm, int index, int count); /*sets up mpolys for a DM based on face iterators in source*/ void DM_DupPolys(DerivedMesh *source, DerivedMesh *target); +void DM_ensure_normals(DerivedMesh *dm); void DM_ensure_tessface(DerivedMesh *dm); void DM_update_tessface_data(DerivedMesh *dm); |