CpuSmoothNormalContext::CpuSmoothNormalContext(
Far::TopologyRefiner const & refiner, int level, bool resetMemory) :
_numVertices(0), _resetMemory(resetMemory) {
int nfaces = refiner.GetNumFaces(level),
nverts = nfaces * 4;
_faceVerts.resize(nverts);
Far::Index * dest = &_faceVerts[0];
for (int face=0; face<nfaces; ++face, dest+=4) {
Far::ConstIndexArray fverts = refiner.GetFaceVertices(level, face);
memcpy(dest, fverts.begin(), 4 * sizeof(Far::Index));
}
}
CpuPatchTable::CpuPatchTable(const Far::PatchTable *farPatchTable) {
int nPatchArrays = farPatchTable->GetNumPatchArrays();
// count
int numPatches = 0;
int numIndices = 0;
for (int j = 0; j < nPatchArrays; ++j) {
int nPatch = farPatchTable->GetNumPatches(j);
int nCV = farPatchTable->GetPatchArrayDescriptor(j).GetNumControlVertices();
numPatches += nPatch;
numIndices += nPatch * nCV;
}
_patchArrays.reserve(nPatchArrays);
_indexBuffer.reserve(numIndices);
_varyingPatchArrays.reserve(nPatchArrays);
_varyingIndexBuffer.reserve(
numPatches*farPatchTable->GetVaryingPatchDescriptor().GetNumControlVertices());
_fvarPatchArrays.resize(farPatchTable->GetNumFVarChannels());
_fvarIndexBuffers.resize(farPatchTable->GetNumFVarChannels());
_fvarParamBuffers.resize(farPatchTable->GetNumFVarChannels());
for (int fvc=0; fvc<farPatchTable->GetNumFVarChannels(); ++fvc) {
_fvarPatchArrays[fvc].reserve(nPatchArrays);
_fvarIndexBuffers[fvc].reserve(
numPatches*farPatchTable->GetFVarPatchDescriptor(fvc).GetNumControlVertices());
_fvarParamBuffers[fvc].reserve(numPatches);
}
_patchParamBuffer.reserve(numPatches);
// for each patchArray
for (int j = 0; j < nPatchArrays; ++j) {
PatchArray patchArray(farPatchTable->GetPatchArrayDescriptor(j),
farPatchTable->GetNumPatches(j),
(int)_indexBuffer.size(),
(int)_patchParamBuffer.size());
_patchArrays.push_back(patchArray);
// indices
Far::ConstIndexArray indices = farPatchTable->GetPatchArrayVertices(j);
_indexBuffer.insert(_indexBuffer.end(), indices.begin(), indices.end());
// varying
PatchArray varyingPatchArray(
farPatchTable->GetVaryingPatchDescriptor(), numPatches, 0, 0);
_varyingPatchArrays.push_back(varyingPatchArray);
Far::ConstIndexArray
varyingIndices = farPatchTable->GetPatchArrayVaryingVertices(j);
_varyingIndexBuffer.insert(_varyingIndexBuffer.end(),
varyingIndices.begin(), varyingIndices.end());
// face-varying
for (int fvc=0; fvc<farPatchTable->GetNumFVarChannels(); ++fvc) {
PatchArray fvarPatchArray(
farPatchTable->GetFVarPatchDescriptor(fvc), numPatches, 0, 0);
_fvarPatchArrays[fvc].push_back(fvarPatchArray);
Far::ConstIndexArray
fvarIndices = farPatchTable->GetPatchArrayFVarValues(j, fvc);
_fvarIndexBuffers[fvc].insert(_fvarIndexBuffers[fvc].end(),
fvarIndices.begin(), fvarIndices.end());
// face-varying param
Far::ConstPatchParamArray
fvarParam = farPatchTable->GetPatchArrayFVarPatchParams(j, fvc);
for (int k = 0; k < numPatches; ++k) {
PatchParam param;
//param.patchParam = patchParamTable[patchIndex];
param.field0 = fvarParam[k].field0;
param.field1 = fvarParam[k].field1;
param.sharpness = 0.0f;
_fvarParamBuffers[fvc].push_back(param);
}
}
// patchParams bundling
// XXX: this process won't be needed if Far::PatchParam includes
// sharpness.
#if 0
// XXX: we need sharpness interface for patcharray or put sharpness
// into patchParam.
Far::ConstPatchParamArray patchParams =
farPatchTable->GetPatchParams(j);
for (int k = 0; k < patchParams.size(); ++k) {
float sharpness = 0.0;
_patchParamBuffer.push_back(patchParams[k].field0);
_patchParamBuffer.push_back(patchParams[k].field1);
_patchParamBuffer.push_back(*((unsigned int *)&sharpness));
}
#else
// XXX: workaround. GetPatchParamTable() will be deprecated though.
Far::PatchParamTable const & patchParamTable =
farPatchTable->GetPatchParamTable();
std::vector<Far::Index> const &sharpnessIndexTable =
farPatchTable->GetSharpnessIndexTable();
int numPatchesJ = farPatchTable->GetNumPatches(j);
for (int k = 0; k < numPatchesJ; ++k) {
float sharpness = 0.0;
int patchIndex = (int)_patchParamBuffer.size();
if (patchIndex < (int)sharpnessIndexTable.size()) {
int sharpnessIndex = sharpnessIndexTable[patchIndex];
if (sharpnessIndex >= 0)
sharpness = farPatchTable->GetSharpnessValues()[sharpnessIndex];
}
PatchParam param;
//param.patchParam = patchParamTable[patchIndex];
param.field0 = patchParamTable[patchIndex].field0;
param.field1 = patchParamTable[patchIndex].field1;
param.sharpness = sharpness;
_patchParamBuffer.push_back(param);
}
#endif
}
}
