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Copyright 2013 Pixar
Licensed under the Apache License, Version 2.0 (the "Apache License")
with the following modification; you may not use this file except in
compliance with the Apache License and the following modification to it:
Section 6. Trademarks. is deleted and replaced with:
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor
and its affiliates, except as required to comply with Section 4(c) of
the License and to reproduce the content of the NOTICE file.
You may obtain a copy of the Apache License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the Apache License with the above modification is
distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the Apache License for the specific
language governing permissions and limitations under the Apache License.
253 lines
8.8 KiB
C++
253 lines
8.8 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 "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/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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