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Fix simple subsurf on wire edges

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Subsurf on wire edges gave smooth results even if set to simple
subdiv. Added a field to the CCG meshIFC to flag simple subdivision,
then when syncing vertices simply skip moving vertices if in
simple-subdiv mode.

This change affects two places, the level-1 build in sync and the
subdivision up to other levels.

Fixes bug [#32268] Simple Subsurf Modifier gives unexpected results on
edges without faces
projects.blender.org/tracker/index.php?func=detail&aid=32268&group_id=9&atid=498
This commit is contained in:
Nicholas Bishop 2012-08-18 19:54:21 +00:00
parent e30ed91b90
commit 12425588f2
3 changed files with 21 additions and 9 deletions
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9
source/blender/blenkernel/intern/CCGSubSurf.c
View File

@ -1798,7 +1798,7 @@ static void ccgSubSurf__calcSubdivLevel(CCGSubSurf *ss,
if (seamEdges < 2 || seamEdges != v->numEdges)
seam = 0;
if (!v->numEdges) {
if (!v->numEdges || ss->meshIFC.simpleSubdiv) {
VertDataCopy(nCo, co, ss);
}
else if (_vert_isBoundary(v)) {
@ -2246,7 +2246,7 @@ static void ccgSubSurf__sync(CCGSubSurf *ss)
if (seamEdges < 2 || seamEdges != v->numEdges)
seam = 0;
if (!v->numEdges) {
if (!v->numEdges || ss->meshIFC.simpleSubdiv) {
VertDataCopy(nCo, co, ss);
}
else if (_vert_isBoundary(v)) {
@ -2827,6 +2827,11 @@ int ccgSubSurf_getGridLevelSize(const CCGSubSurf *ss, int level)
}
}
int ccgSubSurf_getSimpleSubdiv(const CCGSubSurf *ss)
{
return ss->meshIFC.simpleSubdiv;
}
/* Vert accessors */
CCGVertHDL ccgSubSurf_getVertVertHandle(CCGVert *v)

2
source/blender/blenkernel/intern/CCGSubSurf.h
View File

@ -17,6 +17,7 @@ typedef struct CCGMeshIFC {
int vertUserSize, edgeUserSize, faceUserSize;
int numLayers;
int vertDataSize;
int simpleSubdiv;
} CCGMeshIFC;
/***/
@ -91,6 +92,7 @@ int ccgSubSurf_getEdgeSize (const CCGSubSurf *ss);
int ccgSubSurf_getEdgeLevelSize (const CCGSubSurf *ss, int level);
int ccgSubSurf_getGridSize (const CCGSubSurf *ss);
int ccgSubSurf_getGridLevelSize (const CCGSubSurf *ss, int level);
int ccgSubSurf_getSimpleSubdiv (const CCGSubSurf *ss);
CCGVert* ccgSubSurf_getVert (CCGSubSurf *ss, CCGVertHDL v);
CCGVertHDL ccgSubSurf_getVertVertHandle (CCGVert *v);

19
source/blender/blenkernel/intern/subsurf_ccg.c
View File

@ -113,7 +113,8 @@ typedef enum {
CCG_USE_ARENA = 2,
CCG_CALC_NORMALS = 4,
/* add an extra four bytes for a mask layer */
CCG_ALLOC_MASK = 8
CCG_ALLOC_MASK = 8,
CCG_SIMPLE_SUBDIV = 16
} CCGFlags;
static CCGSubSurf *_getSubSurf(CCGSubSurf *prevSS, int subdivLevels,
@ -133,7 +134,10 @@ static CCGSubSurf *_getSubSurf(CCGSubSurf *prevSS, int subdivLevels,
ccgSubSurf_getUseAgeCounts(prevSS, &oldUseAging, NULL, NULL, NULL);
if (oldUseAging != useAging) {
if ((oldUseAging != useAging) ||
(ccgSubSurf_getSimpleSubdiv(prevSS) !=
!!(flags & CCG_SIMPLE_SUBDIV)))
{
ccgSubSurf_free(prevSS);
}
else {
@ -156,6 +160,7 @@ static CCGSubSurf *_getSubSurf(CCGSubSurf *prevSS, int subdivLevels,
ifc.vertDataSize += sizeof(float) * 3;
if (flags & CCG_ALLOC_MASK)
ifc.vertDataSize += sizeof(float);
ifc.simpleSubdiv = !!(flags & CCG_SIMPLE_SUBDIV);
if (useArena) {
CCGAllocatorIFC allocatorIFC;
@ -3474,7 +3479,7 @@ struct DerivedMesh *subsurf_make_derived_from_derived(
float (*vertCos)[3],
SubsurfFlags flags)
{
int useSimple = smd->subdivType == ME_SIMPLE_SUBSURF;
int useSimple = (smd->subdivType == ME_SIMPLE_SUBSURF) ? CCG_SIMPLE_SUBDIV : 0;
CCGFlags useAging = smd->flags & eSubsurfModifierFlag_DebugIncr ? CCG_USE_AGING : 0;
int useSubsurfUv = smd->flags & eSubsurfModifierFlag_SubsurfUv;
int drawInteriorEdges = !(smd->flags & eSubsurfModifierFlag_ControlEdges);
@ -3483,7 +3488,7 @@ struct DerivedMesh *subsurf_make_derived_from_derived(
if (flags & SUBSURF_FOR_EDIT_MODE) {
int levels = (smd->modifier.scene) ? get_render_subsurf_level(&smd->modifier.scene->r, smd->levels) : smd->levels;
smd->emCache = _getSubSurf(smd->emCache, levels, 3, useAging | CCG_CALC_NORMALS);
smd->emCache = _getSubSurf(smd->emCache, levels, 3, useSimple | useAging | CCG_CALC_NORMALS);
ss_sync_from_derivedmesh(smd->emCache, dm, vertCos, useSimple);
result = getCCGDerivedMesh(smd->emCache,
@ -3498,7 +3503,7 @@ struct DerivedMesh *subsurf_make_derived_from_derived(
if (levels == 0)
return dm;
ss = _getSubSurf(NULL, levels, 3, CCG_USE_ARENA | CCG_CALC_NORMALS);
ss = _getSubSurf(NULL, levels, 3, useSimple | CCG_USE_ARENA | CCG_CALC_NORMALS);
ss_sync_from_derivedmesh(ss, dm, vertCos, useSimple);
@ -3529,7 +3534,7 @@ struct DerivedMesh *subsurf_make_derived_from_derived(
}
if (useIncremental && (flags & SUBSURF_IS_FINAL_CALC)) {
smd->mCache = ss = _getSubSurf(smd->mCache, levels, 3, useAging | CCG_CALC_NORMALS);
smd->mCache = ss = _getSubSurf(smd->mCache, levels, 3, useSimple | useAging | CCG_CALC_NORMALS);
ss_sync_from_derivedmesh(ss, dm, vertCos, useSimple);
@ -3538,7 +3543,7 @@ struct DerivedMesh *subsurf_make_derived_from_derived(
useSubsurfUv, dm);
}
else {
CCGFlags ccg_flags = CCG_USE_ARENA | CCG_CALC_NORMALS;
CCGFlags ccg_flags = useSimple | CCG_USE_ARENA | CCG_CALC_NORMALS;
if (smd->mCache && (flags & SUBSURF_IS_FINAL_CALC)) {
ccgSubSurf_free(smd->mCache);