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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.
303 lines
12 KiB
C++
303 lines
12 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/cpuKernel.h"
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#include "../osd/vertexDescriptor.h"
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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void OsdCpuComputeFace(
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OsdVertexDescriptor const &vdesc, float * vertex, float * varying,
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const int *F_IT, const int *F_ITa, int vertexOffset, int tableOffset,
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int start, int end) {
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if(vdesc.numVertexElements == 4 && varying == NULL) {
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ComputeFaceKernel<4>
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(vertex, F_IT, F_ITa, vertexOffset, tableOffset, start, end);
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} else if(vdesc.numVertexElements == 8 && varying == NULL) {
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ComputeFaceKernel<8>
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(vertex, F_IT, F_ITa, vertexOffset, tableOffset, start, end);
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}
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else {
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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 = i + vertexOffset - 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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}
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void OsdCpuComputeEdge(
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OsdVertexDescriptor const &vdesc, float *vertex, float *varying,
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const int *E_IT, const float *E_W, int vertexOffset, int tableOffset,
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int start, int end) {
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if(vdesc.numVertexElements == 4 && varying == NULL) {
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ComputeEdgeKernel<4>(vertex, E_IT, E_W, vertexOffset, tableOffset,
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start, end);
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}
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else if(vdesc.numVertexElements == 8 && varying == NULL) {
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ComputeEdgeKernel<8>(vertex, E_IT, E_W, vertexOffset, tableOffset,
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start, end);
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}
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else {
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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 = i + vertexOffset - 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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}
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void OsdCpuComputeVertexA(
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OsdVertexDescriptor const &vdesc, float *vertex, float *varying,
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const int *V_ITa, const float *V_W, int vertexOffset, int tableOffset,
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int start, int end, int pass) {
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if(vdesc.numVertexElements == 4 && varying == NULL) {
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ComputeVertexAKernel<4>(vertex, V_ITa, V_W, vertexOffset, tableOffset,
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start, end, pass);
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}
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else if (vdesc.numVertexElements == 8 && varying == NULL) {
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ComputeVertexAKernel<8>(vertex, V_ITa, V_W, vertexOffset, tableOffset,
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start, end, pass);
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}
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else {
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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 = i + vertexOffset - 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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}
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void OsdCpuComputeVertexB(
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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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if(vdesc.numVertexElements == 4 && varying == NULL) {
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ComputeVertexBKernel<4>(vertex, V_ITa, V_IT, V_W,
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vertexOffset, tableOffset, start, end);
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}
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else if(vdesc.numVertexElements == 8 && varying == NULL) {
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ComputeVertexBKernel<8>(vertex, V_ITa, V_IT, V_W,
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vertexOffset, tableOffset, start, end);
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}
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else {
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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 = i + vertexOffset - 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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}
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void OsdCpuComputeLoopVertexB(
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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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if(vdesc.numVertexElements == 4 && varying == NULL) {
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ComputeLoopVertexBKernel<4>(vertex, V_ITa, V_IT, V_W, vertexOffset,
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tableOffset, start, end);
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}
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else if(vdesc.numVertexElements == 8 && varying == NULL) {
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ComputeLoopVertexBKernel<8>(vertex, V_ITa, V_IT, V_W, vertexOffset,
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tableOffset, start, end);
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}
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else {
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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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}
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void OsdCpuComputeBilinearEdge(
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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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if(vdesc.numVertexElements == 4 && varying == NULL) {
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ComputeBilinearEdgeKernel<4>(vertex, E_IT, vertexOffset, tableOffset,
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start, end);
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}
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else if(vdesc.numVertexElements == 8 && varying == NULL) {
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ComputeBilinearEdgeKernel<8>(vertex, E_IT, vertexOffset, tableOffset,
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start, end);
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}
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else {
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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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}
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void OsdCpuComputeBilinearVertex(
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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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int numVertexElements = vdesc.numVertexElements;
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int numVaryingElements = vdesc.numVaryingElements;
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float *src, *des;
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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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src = vertex + p * numVertexElements;
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des = vertex + dstIndex * numVertexElements;
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memcpy(des, src, sizeof(float)*numVertexElements);
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if(varying) {
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src = varying + p * numVaryingElements;
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des = varying + dstIndex * numVaryingElements;
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memcpy(des, src, sizeof(float)*numVaryingElements);
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}
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}
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}
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void OsdCpuEditVertexAdd(
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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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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 OsdCpuEditVertexSet(
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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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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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