static DerivedMesh *applyModifier(ModifierData *md, Object *ob, DerivedMesh *dm,
ModifierApplyFlag flag)
{
MultiresModifierData *mmd = (MultiresModifierData *)md;
DerivedMesh *result;
Mesh *me = (Mesh *)ob->data;
const int useRenderParams = flag & MOD_APPLY_RENDER;
if (mmd->totlvl) {
if (!CustomData_get_layer(&me->ldata, CD_MDISPS)) {
/* multires always needs a displacement layer */
CustomData_add_layer(&me->ldata, CD_MDISPS, CD_CALLOC, NULL, me->totloop);
}
}
result = multires_dm_create_from_derived(mmd, 0, dm, ob, useRenderParams);
if (result == dm)
return dm;
if(useRenderParams || !(flag & MOD_APPLY_USECACHE)) {
DerivedMesh *cddm;
cddm = CDDM_copy(result);
/* copy hidden flag to vertices */
if (!useRenderParams) {
struct MDisps *mdisps;
mdisps = CustomData_get_layer(&me->ldata, CD_MDISPS);
if (mdisps) {
subsurf_copy_grid_hidden(result, me->mpoly,
cddm->getVertArray(cddm),
mdisps);
BKE_mesh_flush_hidden_from_verts(cddm->getVertArray(cddm),
cddm->getLoopArray(cddm),
cddm->getEdgeArray(cddm),
cddm->getNumEdges(cddm),
cddm->getPolyArray(cddm),
cddm->getNumPolys(cddm));
}
}
result->release(result);
result = cddm;
}
return result;
}
static DerivedMesh *applyModifier(ModifierData *md, Object *ob, DerivedMesh *dm,
ModifierApplyFlag flag)
{
MultiresModifierData *mmd = (MultiresModifierData *)md;
DerivedMesh *result;
Mesh *me = (Mesh *)ob->data;
const bool useRenderParams = (flag & MOD_APPLY_RENDER) != 0;
const bool ignore_simplify = (flag & MOD_APPLY_IGNORE_SIMPLIFY) != 0;
MultiresFlags flags = 0;
const bool has_mask = CustomData_has_layer(&me->ldata, CD_GRID_PAINT_MASK);
if (mmd->totlvl) {
if (!CustomData_get_layer(&me->ldata, CD_MDISPS)) {
/* multires always needs a displacement layer */
CustomData_add_layer(&me->ldata, CD_MDISPS, CD_CALLOC, NULL, me->totloop);
}
}
if (has_mask)
flags |= MULTIRES_ALLOC_PAINT_MASK;
if (useRenderParams)
flags |= MULTIRES_USE_RENDER_PARAMS;
if (ignore_simplify)
flags |= MULTIRES_IGNORE_SIMPLIFY;
result = multires_make_derived_from_derived(dm, mmd, ob, flags);
if (result == dm)
return dm;
if (useRenderParams || !(flag & MOD_APPLY_USECACHE)) {
DerivedMesh *cddm;
cddm = CDDM_copy(result);
/* copy hidden/masks to vertices */
if (!useRenderParams) {
struct MDisps *mdisps;
struct GridPaintMask *grid_paint_mask;
mdisps = CustomData_get_layer(&me->ldata, CD_MDISPS);
grid_paint_mask = CustomData_get_layer(&me->ldata, CD_GRID_PAINT_MASK);
if (mdisps) {
subsurf_copy_grid_hidden(result, me->mpoly,
cddm->getVertArray(cddm),
mdisps);
BKE_mesh_flush_hidden_from_verts_ex(cddm->getVertArray(cddm),
cddm->getLoopArray(cddm),
cddm->getEdgeArray(cddm),
cddm->getNumEdges(cddm),
cddm->getPolyArray(cddm),
cddm->getNumPolys(cddm));
}
if (grid_paint_mask) {
float *paint_mask = CustomData_add_layer(&cddm->vertData,
CD_PAINT_MASK,
CD_CALLOC, NULL,
cddm->getNumVerts(cddm));
subsurf_copy_grid_paint_mask(result, me->mpoly,
paint_mask, grid_paint_mask);
}
}
result->release(result);
result = cddm;
}
return result;
}
