optimization: only calculate the normals for passing into derivedMesh foreachMappedVert/foreachMappedFaceCenter when needed,

this means in editmode with wire draw, face and vertex normals don't have to be calculated at all.

in most cases the normals are not used so add a flag that makes calculating them only for functions that need them.
also fix face normal calculation for CDDM, was using quad calculation for ngons too.

3 files changed, 13 insertions, 13 deletions

diff --git a/source/blender/editors/space_view3d/drawobject.c b/source/blender/editors/space_view3d/drawobject.c
index 38386a5c267..1d98906a6fb 100644
--- a/source/blender/editors/space_view3d/drawobject.c
+++ b/source/blender/editors/space_view3d/drawobject.c
@@ -2002,7 +2002,7 @@ static void drawSelectedVertices(DerivedMesh *dm, Mesh *me)
 	data.col[2] = act_col;
 
 	glBegin(GL_POINTS);
-	dm->foreachMappedVert(dm, drawSelectedVertices__mapFunc, &data);
+	dm->foreachMappedVert(dm, drawSelectedVertices__mapFunc, &data, DM_FOREACH_NOP);
 	glEnd();
 }
 
@@ -2068,7 +2068,7 @@ static void draw_dm_face_normals(BMEditMesh *em, Scene *scene, Object *ob, Deriv
 	calcDrawDMNormalScale(ob, &data);
 
 	glBegin(GL_LINES);
-	dm->foreachMappedFaceCenter(dm, draw_dm_face_normals__mapFunc, &data);
+	dm->foreachMappedFaceCenter(dm, draw_dm_face_normals__mapFunc, &data, DM_FOREACH_USE_NORMAL);
 	glEnd();
 }
 
@@ -2088,7 +2088,7 @@ static void draw_dm_face_centers(BMEditMesh *em, DerivedMesh *dm, char sel)
 	void *ptrs[2] = {em, &sel};
 
 	bglBegin(GL_POINTS);
-	dm->foreachMappedFaceCenter(dm, draw_dm_face_centers__mapFunc, ptrs);
+	dm->foreachMappedFaceCenter(dm, draw_dm_face_centers__mapFunc, ptrs, DM_FOREACH_NOP);
 	bglEnd();
 }
 
@@ -2133,7 +2133,7 @@ static void draw_dm_vert_normals(BMEditMesh *em, Scene *scene, Object *ob, Deriv
 	calcDrawDMNormalScale(ob, &data);
 
 	glBegin(GL_LINES);
-	dm->foreachMappedVert(dm, draw_dm_vert_normals__mapFunc, &data);
+	dm->foreachMappedVert(dm, draw_dm_vert_normals__mapFunc, &data, DM_FOREACH_USE_NORMAL);
 	glEnd();
 }
 
@@ -2204,7 +2204,7 @@ static void draw_dm_verts(BMEditMesh *em, DerivedMesh *dm, const char sel, BMVer
 	invert_m4(data.imat);
 
 	bglBegin(GL_POINTS);
-	dm->foreachMappedVert(dm, draw_dm_verts__mapFunc, &data);
+	dm->foreachMappedVert(dm, draw_dm_verts__mapFunc, &data, DM_FOREACH_NOP);
 	bglEnd();
 }
 
@@ -2534,7 +2534,7 @@ static void draw_dm_bweights(BMEditMesh *em, Scene *scene, DerivedMesh *dm)
 		if (data.cd_layer_offset != -1) {
 			glPointSize(UI_GetThemeValuef(TH_VERTEX_SIZE) + 2);
 			bglBegin(GL_POINTS);
-			dm->foreachMappedVert(dm, draw_dm_bweights__mapFunc, &data);
+			dm->foreachMappedVert(dm, draw_dm_bweights__mapFunc, &data, DM_FOREACH_NOP);
 			bglEnd();
 		}
 	}
@@ -7359,7 +7359,7 @@ static void bbs_obmode_mesh_verts(Object *ob, DerivedMesh *dm, int offset)
 	data.offset = (void *)(intptr_t) offset;
 	glPointSize(UI_GetThemeValuef(TH_VERTEX_SIZE));
 	bglBegin(GL_POINTS);
-	dm->foreachMappedVert(dm, bbs_obmode_mesh_verts__mapFunc, &data);
+	dm->foreachMappedVert(dm, bbs_obmode_mesh_verts__mapFunc, &data, DM_FOREACH_NOP);
 	bglEnd();
 	glPointSize(1.0);
 }
@@ -7382,7 +7382,7 @@ static void bbs_mesh_verts(BMEditMesh *em, DerivedMesh *dm, int offset)
 
 	glPointSize(UI_GetThemeValuef(TH_VERTEX_SIZE));
 	bglBegin(GL_POINTS);
-	dm->foreachMappedVert(dm, bbs_mesh_verts__mapFunc, ptrs);
+	dm->foreachMappedVert(dm, bbs_mesh_verts__mapFunc, ptrs, DM_FOREACH_NOP);
 	bglEnd();
 	glPointSize(1.0);
 }
@@ -7448,7 +7448,7 @@ static void bbs_mesh_solid_EM(BMEditMesh *em, Scene *scene, View3D *v3d,
 			glPointSize(UI_GetThemeValuef(TH_FACEDOT_SIZE));
 
 			bglBegin(GL_POINTS);
-			dm->foreachMappedFaceCenter(dm, bbs_mesh_solid__drawCenter, ptrs);
+			dm->foreachMappedFaceCenter(dm, bbs_mesh_solid__drawCenter, ptrs, DM_FOREACH_NOP);
 			bglEnd();
 		}
 
diff --git a/source/blender/editors/space_view3d/view3d_iterators.c b/source/blender/editors/space_view3d/view3d_iterators.c
index 0490d8763d8..d13ab15d837 100644
--- a/source/blender/editors/space_view3d/view3d_iterators.c
+++ b/source/blender/editors/space_view3d/view3d_iterators.c
@@ -124,7 +124,7 @@ void meshobject_foreachScreenVert(
 		ED_view3d_clipping_local(vc->rv3d, vc->obedit->obmat);  /* for local clipping lookups */
 	}
 
-	dm->foreachMappedVert(dm, meshobject_foreachScreenVert__mapFunc, &data);
+	dm->foreachMappedVert(dm, meshobject_foreachScreenVert__mapFunc, &data, DM_FOREACH_NOP);
 
 	dm->release(dm);
 }
@@ -166,7 +166,7 @@ void mesh_foreachScreenVert(
 	}
 
 	EDBM_index_arrays_ensure(vc->em, BM_VERT);
-	dm->foreachMappedVert(dm, mesh_foreachScreenVert__mapFunc, &data);
+	dm->foreachMappedVert(dm, mesh_foreachScreenVert__mapFunc, &data, DM_FOREACH_NOP);
 
 	dm->release(dm);
 }
@@ -262,7 +262,7 @@ void mesh_foreachScreenFace(
 	data.clip_flag = clip_flag;
 
 	EDBM_index_arrays_ensure(vc->em, BM_FACE);
-	dm->foreachMappedFaceCenter(dm, mesh_foreachScreenFace__mapFunc, &data);
+	dm->foreachMappedFaceCenter(dm, mesh_foreachScreenFace__mapFunc, &data, DM_FOREACH_NOP);
 
 	dm->release(dm);
 }
diff --git a/source/blender/editors/space_view3d/view3d_snap.c b/source/blender/editors/space_view3d/view3d_snap.c
index fb7bbdaa178..a2dd7d510bd 100644
--- a/source/blender/editors/space_view3d/view3d_snap.c
+++ b/source/blender/editors/space_view3d/view3d_snap.c
@@ -343,7 +343,7 @@ static void make_trans_verts(Object *obedit, float min[3], float max[3], int mod
 		
 		if (transvmain && em->derivedCage) {
 			EDBM_index_arrays_ensure(em, BM_VERT);
-			em->derivedCage->foreachMappedVert(em->derivedCage, set_mapped_co, userdata);
+			em->derivedCage->foreachMappedVert(em->derivedCage, set_mapped_co, userdata, DM_FOREACH_NOP);
 		}
 	}
 	else if (obedit->type == OB_ARMATURE) {