static int isDisabled(ModifierData *md, int useRenderParams)
{
SubsurfModifierData *smd = (SubsurfModifierData *) md;
int levels = (useRenderParams) ? smd->renderLevels : smd->levels;
return get_render_subsurf_level(&md->scene->r, levels) == 0;
}
/*
* Entrypoint for modifier. Should return the output DM based on the input DM.
*/
struct DerivedMesh *sl_subsurf_make_derived_from_derived(
struct DerivedMesh *input,
struct SubsurfModifierData *smd,
float (*vertCos)[3],
SubsurfFlags flags)
{
SLSubSurf *ss;
int i,j;
int numCol, numTex;
int levels;
int smoothing = smd->subdivType == ME_SL_SUBSURF;
int useSubsurfUv = smd->flags & eSubsurfModifierFlag_SubsurfUv;
// TODO drawInterior
//int drawInteriorEdges = !(smd->flags & eSubsurfModifierFlag_ControlEdges);
DerivedMesh *result, *prevResult;
// We don't use caches for this modifier
if (smd->emCache) {
smd->cacheFree(smd->emCache);
smd->emCache = NULL;
}
if (smd->mCache) {
smd->cacheFree(smd->mCache);
smd->mCache = NULL;
}
if (flags & SUBSURF_USE_RENDER_PARAMS) {
levels = (smd->modifier.scene) ? get_render_subsurf_level(&smd->modifier.scene->r, smd->renderLevels) : smd->renderLevels;
}
else /*if (flags & SUBSURF_FOR_EDIT_MODE)*/ {
levels = (smd->modifier.scene) ? get_render_subsurf_level(&smd->modifier.scene->r, smd->levels) : smd->levels;
}
// Not sure if this is acceptable, but it needs to be dealt with:
if (levels == 0) return input;
// Now create the structures recursively, freeing all the middle steps (this gets a bit messy...)
numCol = CustomData_number_of_layers(&input->loopData, CD_MLOOPCOL);
numTex = CustomData_number_of_layers(&input->loopData, CD_MLOOPUV);
prevResult = input;
for (i = 0; i < levels; i++) {
if (i == 0) {
prevResult = input;
} else {
prevResult = result;
}
ss = SL_SubSurf_new(smoothing, prevResult, vertCos);
result = SL_SubSurf_constructOutput(ss);
SL_syncVertData(ss, result); // Have to before syncing verts themselves.
SL_syncVerts(ss, result);
for (j = 0; j < numCol; j++) {
SL_syncPaint(ss, result, j);
}
for (j = 0; j < numTex; j++) {
SL_syncUV(ss, result, useSubsurfUv, j);
}
if (prevResult != input && i < levels - 1) { // We are not allowed to remove the input DM, and not the last DM either (we need to tesselate)
prevResult->release(prevResult);
}
}
// We know the what the output DM contains, so we can optimize the tess face generation;
//slDM_constructTessFaces(result);
// TODO: All poly custom data should be copied over to tess faces as CD_REFERENCE, which would save time and memory.
//result->recalcTessellation(result);
slDM_constructTessFaces(result);
if (prevResult != input) { // We are not allowed to remove the input DM, and not the last DM either (we need to tesselate)
prevResult->release(prevResult);
}
// The preview color (for weight painting) needs to be copied over manually;
loops_to_customdata_corners(result);
return result;
}
