mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-11-27 05:50:05 +00:00
254 lines
8.7 KiB
C++
254 lines
8.7 KiB
C++
//
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// Copyright 2013 Pixar
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License
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// and the following modification to it: Section 6 Trademarks.
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// deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the
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// trade names, trademarks, service marks, or product names of the
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// Licensor and its affiliates, except as required for reproducing
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// the content of the NOTICE file.
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//
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// You may obtain a copy of the 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,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific
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// language governing permissions and limitations under the
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// License.
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//
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#include "../osd/ompKernel.h"
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#include "../osd/vertexDescriptor.h"
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#include <math.h>
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#include <omp.h>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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void OsdOmpComputeFace(
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OsdVertexDescriptor const &vdesc, float * vertex, float * varying,
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const int *F_IT, const int *F_ITa, int offset, int tableOffset, int start, int end) {
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#pragma omp parallel for
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for (int i = start + tableOffset; i < end + tableOffset; i++) {
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int h = F_ITa[2*i];
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int n = F_ITa[2*i+1];
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float weight = 1.0f/n;
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// XXX: should use local vertex struct variable instead of
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// accumulating directly into global memory.
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int dstIndex = offset + i - tableOffset;
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vdesc.Clear(vertex, varying, dstIndex);
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for (int j = 0; j < n; ++j) {
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int index = F_IT[h+j];
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vdesc.AddWithWeight(vertex, dstIndex, index, weight);
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vdesc.AddVaryingWithWeight(varying, dstIndex, index, weight);
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}
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}
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}
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void OsdOmpComputeEdge(
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OsdVertexDescriptor const &vdesc, float *vertex, float *varying,
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const int *E_IT, const float *E_W, int offset, int tableOffset, int start, int end) {
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#pragma omp parallel for
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for (int i = start + tableOffset; i < end + tableOffset; i++) {
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int eidx0 = E_IT[4*i+0];
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int eidx1 = E_IT[4*i+1];
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int eidx2 = E_IT[4*i+2];
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int eidx3 = E_IT[4*i+3];
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float vertWeight = E_W[i*2+0];
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int dstIndex = offset + i - tableOffset;
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vdesc.Clear(vertex, varying, dstIndex);
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vdesc.AddWithWeight(vertex, dstIndex, eidx0, vertWeight);
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vdesc.AddWithWeight(vertex, dstIndex, eidx1, vertWeight);
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if (eidx2 != -1) {
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float faceWeight = E_W[i*2+1];
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vdesc.AddWithWeight(vertex, dstIndex, eidx2, faceWeight);
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vdesc.AddWithWeight(vertex, dstIndex, eidx3, faceWeight);
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}
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vdesc.AddVaryingWithWeight(varying, dstIndex, eidx0, 0.5f);
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vdesc.AddVaryingWithWeight(varying, dstIndex, eidx1, 0.5f);
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}
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}
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void OsdOmpComputeVertexA(
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OsdVertexDescriptor const &vdesc, float *vertex, float *varying,
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const int *V_ITa, const float *V_W,
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int offset, int tableOffset, int start, int end, int pass) {
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#pragma omp parallel for
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for (int i = start + tableOffset; i < end + tableOffset; i++) {
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int n = V_ITa[5*i+1];
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int p = V_ITa[5*i+2];
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int eidx0 = V_ITa[5*i+3];
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int eidx1 = V_ITa[5*i+4];
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float weight = (pass == 1) ? V_W[i] : 1.0f - V_W[i];
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// In the case of fractional weight, the weight must be inverted since
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// the value is shared with the k_Smooth kernel (statistically the
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// k_Smooth kernel runs much more often than this one)
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if (weight > 0.0f && weight < 1.0f && n > 0)
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weight = 1.0f - weight;
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int dstIndex = offset + i - tableOffset;
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if (not pass)
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vdesc.Clear(vertex, varying, dstIndex);
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if (eidx0 == -1 || (pass == 0 && (n == -1))) {
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vdesc.AddWithWeight(vertex, dstIndex, p, weight);
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} else {
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vdesc.AddWithWeight(vertex, dstIndex, p, weight * 0.75f);
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vdesc.AddWithWeight(vertex, dstIndex, eidx0, weight * 0.125f);
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vdesc.AddWithWeight(vertex, dstIndex, eidx1, weight * 0.125f);
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}
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if (not pass)
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vdesc.AddVaryingWithWeight(varying, dstIndex, p, 1.0f);
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}
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}
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void OsdOmpComputeVertexB(
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OsdVertexDescriptor const &vdesc, float *vertex, float *varying,
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const int *V_ITa, const int *V_IT, const float *V_W,
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int offset, int tableOffset, int start, int end) {
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#pragma omp parallel for
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for (int i = start + tableOffset; i < end + tableOffset; i++) {
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int h = V_ITa[5*i];
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int n = V_ITa[5*i+1];
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int p = V_ITa[5*i+2];
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float weight = V_W[i];
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float wp = 1.0f/static_cast<float>(n*n);
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float wv = (n-2.0f) * n * wp;
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int dstIndex = offset + i - tableOffset;
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vdesc.Clear(vertex, varying, dstIndex);
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vdesc.AddWithWeight(vertex, dstIndex, p, weight * wv);
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for (int j = 0; j < n; ++j) {
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vdesc.AddWithWeight(vertex, dstIndex, V_IT[h+j*2], weight * wp);
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vdesc.AddWithWeight(vertex, dstIndex, V_IT[h+j*2+1], weight * wp);
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}
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vdesc.AddVaryingWithWeight(varying, dstIndex, p, 1.0f);
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}
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}
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void OsdOmpComputeLoopVertexB(
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OsdVertexDescriptor const &vdesc, float *vertex, float *varying,
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const int *V_ITa, const int *V_IT, const float *V_W,
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int vertexOffset, int tableOffset, int start, int end) {
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#pragma omp parallel for
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for (int i = start + tableOffset; i < end + tableOffset; i++) {
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int h = V_ITa[5*i];
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int n = V_ITa[5*i+1];
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int p = V_ITa[5*i+2];
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float weight = V_W[i];
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float wp = 1.0f/static_cast<float>(n);
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float beta = 0.25f * cosf(static_cast<float>(M_PI) * 2.0f * wp) + 0.375f;
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beta = beta * beta;
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beta = (0.625f - beta) * wp;
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int dstIndex = i + vertexOffset - tableOffset;
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vdesc.Clear(vertex, varying, dstIndex);
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vdesc.AddWithWeight(vertex, dstIndex, p, weight * (1.0f - (beta * n)));
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for (int j = 0; j < n; ++j)
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vdesc.AddWithWeight(vertex, dstIndex, V_IT[h+j], weight * beta);
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vdesc.AddVaryingWithWeight(varying, dstIndex, p, 1.0f);
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}
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}
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void OsdOmpComputeBilinearEdge(
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OsdVertexDescriptor const &vdesc, float *vertex, float *varying,
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const int *E_IT, int vertexOffset, int tableOffset, int start, int end) {
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#pragma omp parallel for
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for (int i = start + tableOffset; i < end + tableOffset; i++) {
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int eidx0 = E_IT[2*i+0];
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int eidx1 = E_IT[2*i+1];
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int dstIndex = i + vertexOffset - tableOffset;
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vdesc.Clear(vertex, varying, dstIndex);
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vdesc.AddWithWeight(vertex, dstIndex, eidx0, 0.5f);
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vdesc.AddWithWeight(vertex, dstIndex, eidx1, 0.5f);
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vdesc.AddVaryingWithWeight(varying, dstIndex, eidx0, 0.5f);
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vdesc.AddVaryingWithWeight(varying, dstIndex, eidx1, 0.5f);
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}
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}
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void OsdOmpComputeBilinearVertex(
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OsdVertexDescriptor const &vdesc, float *vertex, float *varying,
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const int *V_ITa, int vertexOffset, int tableOffset, int start, int end) {
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#pragma omp parallel for
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for (int i = start + tableOffset; i < end + tableOffset; i++) {
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int p = V_ITa[i];
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int dstIndex = i + vertexOffset - tableOffset;
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vdesc.Clear(vertex, varying, dstIndex);
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vdesc.AddWithWeight(vertex, dstIndex, p, 1.0f);
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vdesc.AddVaryingWithWeight(varying, dstIndex, p, 1.0f);
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}
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}
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void OsdOmpEditVertexAdd(
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OsdVertexDescriptor const &vdesc, float *vertex,
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int primVarOffset, int primVarWidth, int vertexOffset, int tableOffset,
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int start, int end,
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const unsigned int *editIndices, const float *editValues) {
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#pragma omp parallel for
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for (int i = start+tableOffset; i < end+tableOffset; i++) {
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vdesc.ApplyVertexEditAdd(vertex,
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primVarOffset,
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primVarWidth,
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editIndices[i] + vertexOffset,
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&editValues[i*primVarWidth]);
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}
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}
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void OsdOmpEditVertexSet(
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OsdVertexDescriptor const &vdesc, float *vertex,
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int primVarOffset, int primVarWidth, int vertexOffset, int tableOffset,
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int start, int end,
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const unsigned int *editIndices, const float *editValues) {
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#pragma omp parallel for
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for (int i = start+tableOffset; i < end+tableOffset; i++) {
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vdesc.ApplyVertexEditSet(vertex,
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primVarOffset,
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primVarWidth,
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editIndices[i] + vertexOffset,
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&editValues[i*primVarWidth]);
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}
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}
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} // end namespace OPENSUBDIV_VERSION
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} // end namespace OpenSubdiv
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