mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-11-23 20:20:09 +00:00
fe38ad8cda
Now that Far::LimitStencilTable and Far::PatchTable support evaluation of 1st and 2nd derivatives the Osd Evaluator API for evaluating stencils and patches has been updated to match.
428 lines
16 KiB
C++
428 lines
16 KiB
C++
//
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// Copyright 2015 Pixar
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//
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// Licensed under the Apache License, Version 2.0 (the "Apache License")
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// with the following modification; you may not use this file except in
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// compliance with the Apache License and the following modification to it:
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// Section 6. Trademarks. is deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the trade
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// names, trademarks, service marks, or product names of the Licensor
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// and its affiliates, except as required to comply with Section 4(c) of
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// the License and to reproduce the content of the NOTICE file.
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//
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// You may obtain a copy of the Apache License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the Apache License with the above modification is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the Apache License for the specific
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// language governing permissions and limitations under the Apache License.
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//
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#include "../osd/cpuEvaluator.h"
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#include "../osd/cpuKernel.h"
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#include "../far/patchBasis.h"
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#include <cstdlib>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Osd {
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/* static */
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bool
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CpuEvaluator::EvalStencils(const float *src, BufferDescriptor const &srcDesc,
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float *dst, BufferDescriptor const &dstDesc,
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const int * sizes,
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const int * offsets,
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const int * indices,
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const float * weights,
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int start, int end) {
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if (end <= start) return true;
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if (srcDesc.length != dstDesc.length) return false;
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// XXX: we can probably expand cpuKernel.cpp to here.
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CpuEvalStencils(src, srcDesc, dst, dstDesc,
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sizes, offsets, indices, weights, start, end);
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return true;
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}
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/* static */
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bool
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CpuEvaluator::EvalStencils(const float *src, BufferDescriptor const &srcDesc,
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float *dst, BufferDescriptor const &dstDesc,
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float *du, BufferDescriptor const &duDesc,
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float *dv, BufferDescriptor const &dvDesc,
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const int * sizes,
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const int * offsets,
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const int * indices,
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const float * weights,
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const float * duWeights,
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const float * dvWeights,
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int start, int end) {
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if (end <= start) return true;
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if (srcDesc.length != dstDesc.length) return false;
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if (srcDesc.length != duDesc.length) return false;
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if (srcDesc.length != dvDesc.length) return false;
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CpuEvalStencils(src, srcDesc,
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dst, dstDesc,
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du, duDesc,
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dv, dvDesc,
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sizes, offsets, indices,
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weights, duWeights, dvWeights,
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start, end);
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return true;
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}
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/* static */
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bool
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CpuEvaluator::EvalStencils(const float *src, BufferDescriptor const &srcDesc,
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float *dst, BufferDescriptor const &dstDesc,
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float *du, BufferDescriptor const &duDesc,
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float *dv, BufferDescriptor const &dvDesc,
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float *duu, BufferDescriptor const &duuDesc,
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float *duv, BufferDescriptor const &duvDesc,
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float *dvv, BufferDescriptor const &dvvDesc,
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const int * sizes,
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const int * offsets,
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const int * indices,
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const float * weights,
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const float * duWeights,
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const float * dvWeights,
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const float * duuWeights,
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const float * duvWeights,
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const float * dvvWeights,
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int start, int end) {
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if (end <= start) return true;
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if (srcDesc.length != dstDesc.length) return false;
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if (srcDesc.length != duDesc.length) return false;
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if (srcDesc.length != dvDesc.length) return false;
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if (srcDesc.length != duuDesc.length) return false;
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if (srcDesc.length != duvDesc.length) return false;
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if (srcDesc.length != dvvDesc.length) return false;
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CpuEvalStencils(src, srcDesc,
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dst, dstDesc,
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du, duDesc,
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dv, dvDesc,
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duu, duuDesc,
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duv, duvDesc,
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dvv, dvvDesc,
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sizes, offsets, indices,
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weights, duWeights, dvWeights,
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duuWeights, duvWeights, dvvWeights,
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start, end);
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return true;
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}
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template <typename T>
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struct BufferAdapter {
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BufferAdapter(T *p, int length, int stride) :
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_p(p), _length(length), _stride(stride) { }
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void Clear() {
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for (int i = 0; i < _length; ++i) _p[i] = 0;
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}
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void AddWithWeight(T const *src, float w) {
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if (_p) {
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for (int i = 0; i < _length; ++i) {
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_p[i] += src[i] * w;
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}
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}
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}
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const T *operator[] (int index) const {
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return _p + _stride * index;
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}
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BufferAdapter<T> & operator ++() {
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if (_p) {
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_p += _stride;
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}
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return *this;
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}
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T *_p;
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int _length;
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int _stride;
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};
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/* static */
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bool
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CpuEvaluator::EvalPatches(const float *src, BufferDescriptor const &srcDesc,
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float *dst, BufferDescriptor const &dstDesc,
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int numPatchCoords,
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const PatchCoord *patchCoords,
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const PatchArray *patchArrays,
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const int *patchIndexBuffer,
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const PatchParam *patchParamBuffer) {
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if (src) {
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src += srcDesc.offset;
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} else {
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return false;
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}
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if (dst) {
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dst += dstDesc.offset;
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if (srcDesc.length != dstDesc.length) return false;
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} else {
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return false;
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}
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BufferAdapter<const float> srcT(src, srcDesc.length, srcDesc.stride);
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BufferAdapter<float> dstT(dst, dstDesc.length, dstDesc.stride);
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float wP[20], wDs[20], wDt[20];
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for (int i = 0; i < numPatchCoords; ++i) {
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PatchCoord const &coord = patchCoords[i];
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PatchArray const &array = patchArrays[coord.handle.arrayIndex];
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Far::PatchParam const & param =
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patchParamBuffer[coord.handle.patchIndex];
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int patchType = param.IsRegular()
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? Far::PatchDescriptor::REGULAR
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: array.GetPatchType();
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int numControlVertices = 0;
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if (patchType == Far::PatchDescriptor::REGULAR) {
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Far::internal::GetBSplineWeights(param,
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coord.s, coord.t, wP, wDs, wDt);
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numControlVertices = 16;
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} else if (patchType == Far::PatchDescriptor::GREGORY_BASIS) {
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Far::internal::GetGregoryWeights(param,
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coord.s, coord.t, wP, wDs, wDt);
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numControlVertices = 20;
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} else if (patchType == Far::PatchDescriptor::QUADS) {
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Far::internal::GetBilinearWeights(param,
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coord.s, coord.t, wP, wDs, wDt);
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numControlVertices = 4;
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} else {
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assert(0);
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return false;
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}
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int indexStride = Far::PatchDescriptor(array.GetPatchType()).GetNumControlVertices();
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int indexBase = array.GetIndexBase() + indexStride *
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(coord.handle.patchIndex - array.GetPrimitiveIdBase());
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const int *cvs = &patchIndexBuffer[indexBase];
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dstT.Clear();
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for (int j = 0; j < numControlVertices; ++j) {
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dstT.AddWithWeight(srcT[cvs[j]], wP[j]);
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}
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++dstT;
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}
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return true;
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}
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/* static */
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bool
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CpuEvaluator::EvalPatches(const float *src, BufferDescriptor const &srcDesc,
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float *dst, BufferDescriptor const &dstDesc,
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float *du, BufferDescriptor const &duDesc,
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float *dv, BufferDescriptor const &dvDesc,
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int numPatchCoords,
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const PatchCoord *patchCoords,
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const PatchArray *patchArrays,
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const int *patchIndexBuffer,
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const PatchParam *patchParamBuffer) {
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if (src) {
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src += srcDesc.offset;
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} else {
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return false;
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}
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if (dst) {
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if (srcDesc.length != dstDesc.length) return false;
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dst += dstDesc.offset;
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}
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if (du) {
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du += duDesc.offset;
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if (srcDesc.length != duDesc.length) return false;
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}
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if (dv) {
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dv += dvDesc.offset;
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if (srcDesc.length != dvDesc.length) return false;
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}
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BufferAdapter<const float> srcT(src, srcDesc.length, srcDesc.stride);
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BufferAdapter<float> dstT(dst, dstDesc.length, dstDesc.stride);
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BufferAdapter<float> duT(du, duDesc.length, duDesc.stride);
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BufferAdapter<float> dvT(dv, dvDesc.length, dvDesc.stride);
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float wP[20], wDs[20], wDt[20];
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for (int i = 0; i < numPatchCoords; ++i) {
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PatchCoord const &coord = patchCoords[i];
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PatchArray const &array = patchArrays[coord.handle.arrayIndex];
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Far::PatchParam const & param =
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patchParamBuffer[coord.handle.patchIndex];
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int patchType = param.IsRegular()
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? Far::PatchDescriptor::REGULAR
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: array.GetPatchType();
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int numControlVertices = 0;
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if (patchType == Far::PatchDescriptor::REGULAR) {
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Far::internal::GetBSplineWeights(param,
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coord.s, coord.t, wP, wDs, wDt);
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numControlVertices = 16;
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} else if (patchType == Far::PatchDescriptor::GREGORY_BASIS) {
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Far::internal::GetGregoryWeights(param,
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coord.s, coord.t, wP, wDs, wDt);
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numControlVertices = 20;
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} else if (patchType == Far::PatchDescriptor::QUADS) {
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Far::internal::GetBilinearWeights(param,
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coord.s, coord.t, wP, wDs, wDt);
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numControlVertices = 4;
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} else {
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assert(0);
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}
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int indexStride = Far::PatchDescriptor(array.GetPatchType()).GetNumControlVertices();
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int indexBase = array.GetIndexBase() + indexStride *
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(coord.handle.patchIndex - array.GetPrimitiveIdBase());
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const int *cvs = &patchIndexBuffer[indexBase];
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dstT.Clear();
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duT.Clear();
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dvT.Clear();
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for (int j = 0; j < numControlVertices; ++j) {
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dstT.AddWithWeight(srcT[cvs[j]], wP[j]);
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duT.AddWithWeight (srcT[cvs[j]], wDs[j]);
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dvT.AddWithWeight (srcT[cvs[j]], wDt[j]);
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}
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++dstT;
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++duT;
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++dvT;
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}
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return true;
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}
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/* static */
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bool
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CpuEvaluator::EvalPatches(const float *src, BufferDescriptor const &srcDesc,
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float *dst, BufferDescriptor const &dstDesc,
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float *du, BufferDescriptor const &duDesc,
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float *dv, BufferDescriptor const &dvDesc,
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float *duu, BufferDescriptor const &duuDesc,
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float *duv, BufferDescriptor const &duvDesc,
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float *dvv, BufferDescriptor const &dvvDesc,
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int numPatchCoords,
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const PatchCoord *patchCoords,
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const PatchArray *patchArrays,
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const int *patchIndexBuffer,
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const PatchParam *patchParamBuffer) {
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if (src) {
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src += srcDesc.offset;
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} else {
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return false;
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}
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if (dst) {
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if (srcDesc.length != dstDesc.length) return false;
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dst += dstDesc.offset;
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}
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if (du) {
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du += duDesc.offset;
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if (srcDesc.length != duDesc.length) return false;
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}
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if (dv) {
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dv += dvDesc.offset;
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if (srcDesc.length != dvDesc.length) return false;
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}
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if (duu) {
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duu += duuDesc.offset;
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if (srcDesc.length != duuDesc.length) return false;
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}
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if (duv) {
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duv += duvDesc.offset;
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if (srcDesc.length != duvDesc.length) return false;
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}
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if (dvv) {
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dvv += dvvDesc.offset;
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if (srcDesc.length != dvvDesc.length) return false;
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}
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BufferAdapter<const float> srcT(src, srcDesc.length, srcDesc.stride);
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BufferAdapter<float> dstT(dst, dstDesc.length, dstDesc.stride);
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BufferAdapter<float> duT(du, duDesc.length, duDesc.stride);
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BufferAdapter<float> dvT(dv, dvDesc.length, dvDesc.stride);
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BufferAdapter<float> duuT(duu, duuDesc.length, duuDesc.stride);
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BufferAdapter<float> duvT(duv, duvDesc.length, duvDesc.stride);
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BufferAdapter<float> dvvT(dvv, dvvDesc.length, dvvDesc.stride);
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float wP[20], wDu[20], wDv[20], wDuu[20], wDuv[20], wDvv[20];
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for (int i = 0; i < numPatchCoords; ++i) {
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PatchCoord const &coord = patchCoords[i];
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PatchArray const &array = patchArrays[coord.handle.arrayIndex];
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Far::PatchParam const & param =
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patchParamBuffer[coord.handle.patchIndex];
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int patchType = param.IsRegular()
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? Far::PatchDescriptor::REGULAR
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: array.GetPatchType();
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int numControlVertices = 0;
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if (patchType == Far::PatchDescriptor::REGULAR) {
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Far::internal::GetBSplineWeights(param,
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coord.s, coord.t, wP, wDu, wDv,
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wDuu, wDuv, wDvv);
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numControlVertices = 16;
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} else if (patchType == Far::PatchDescriptor::GREGORY_BASIS) {
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Far::internal::GetGregoryWeights(param,
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coord.s, coord.t, wP, wDu, wDv,
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wDuu, wDuv, wDvv);
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numControlVertices = 20;
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} else if (patchType == Far::PatchDescriptor::QUADS) {
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Far::internal::GetBilinearWeights(param,
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coord.s, coord.t, wP, wDu, wDv,
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wDuu, wDuv, wDvv);
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numControlVertices = 4;
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} else {
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assert(0);
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}
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int indexStride = Far::PatchDescriptor(array.GetPatchType()).GetNumControlVertices();
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int indexBase = array.GetIndexBase() + indexStride *
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(coord.handle.patchIndex - array.GetPrimitiveIdBase());
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const int *cvs = &patchIndexBuffer[indexBase];
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dstT.Clear();
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duT.Clear();
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dvT.Clear();
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duuT.Clear();
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duvT.Clear();
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dvvT.Clear();
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for (int j = 0; j < numControlVertices; ++j) {
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dstT.AddWithWeight(srcT[cvs[j]], wP[j]);
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duT.AddWithWeight (srcT[cvs[j]], wDu[j]);
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dvT.AddWithWeight (srcT[cvs[j]], wDv[j]);
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duuT.AddWithWeight (srcT[cvs[j]], wDuu[j]);
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duvT.AddWithWeight (srcT[cvs[j]], wDuv[j]);
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dvvT.AddWithWeight (srcT[cvs[j]], wDvv[j]);
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}
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++dstT;
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++duT;
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++dvT;
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++duuT;
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++duvT;
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++dvvT;
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}
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return true;
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}
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} // end namespace Osd
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} // end namespace OPENSUBDIV_VERSION
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} // end namespace OpenSubdiv
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