mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-11-23 12:10:08 +00:00
ee061291b7
All kernels take offset/length/stride to apply subdivision partially in each vertex elements. Also the offset can be used for client-based VBO aggregation, without modifying index buffers. This is useful for topology sharing, in conjunction with glDrawElementsBaseVertex etc. However, gregory patch shader fetches vertex buffer via texture buffer, which index should also be offsetted too. Although gl_BaseVertexARB extension should be able to do that job, it's a relatively new extension. So we use OsdBaseVertex() call to mitigate the compatibility issue as clients can provide it in their way at least for the time being.
429 lines
16 KiB
C++
429 lines
16 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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#ifndef OSD_CPU_KERNEL_H
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#define OSD_CPU_KERNEL_H
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#define __ALIGN_DATA __declspec(align(32))
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#else
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#define __ALIGN_DATA
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#endif
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#include <string.h>
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#include <math.h>
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#include "../version.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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struct OsdVertexDescriptor;
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template<int numVertexElements>
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void ComputeFaceKernel(float *vertex,
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const int *F_IT,
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const int *F_ITa,
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int vertexOffset,
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int tableOffset,
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int start,
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int end) {
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__ALIGN_DATA float result [numVertexElements];
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__ALIGN_DATA float result1[numVertexElements];
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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 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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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int k = 0; k < numVertexElements; ++k)
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result[k] = 0.0f;
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int dstIndex = i + vertexOffset - tableOffset;
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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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src = vertex + index * numVertexElements;
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int k = 0; k < numVertexElements; ++k)
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result[k] += src[k] * weight;
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}
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int k = 0; k < numVertexElements; ++k)
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result1[k] = result[k];
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des = vertex + dstIndex * numVertexElements;
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memcpy(des, result1, sizeof(float)*numVertexElements);
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}
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}
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void OsdCpuComputeFace(float * vertex, float * varying,
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OsdVertexBufferDescriptor const &vertexDesc,
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OsdVertexBufferDescriptor const &varyingDesc,
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const int *F_IT, const int *F_ITa,
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int vertexOffset, int tableOffset,
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int start, int end);
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template<int numVertexElements>
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void ComputeEdgeKernel( float *vertex,
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const int *E_IT,
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const float *E_W,
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int vertexOffset,
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int tableOffset,
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int start,
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int end)
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{
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__ALIGN_DATA float result[numVertexElements];
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__ALIGN_DATA float result1[numVertexElements];
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float *src, *src2, *des;
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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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src = vertex + eidx0 * numVertexElements;
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src2 = vertex + eidx1 * numVertexElements;
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int j = 0; j < numVertexElements; ++j)
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result[j] = (src[j]+src2[j]) * vertWeight;
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if (eidx2 != -1) {
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float faceWeight = E_W[i*2+1];
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src = vertex + eidx2 * numVertexElements;
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src2 = vertex + eidx3 * numVertexElements;
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int j = 0; j < numVertexElements; ++j)
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result[j] += (src[j]+src2[j]) * faceWeight;
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}
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int j = 0; j < numVertexElements; ++j)
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result1[j] = result[j];
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int dstIndex = i + vertexOffset - tableOffset;
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des = vertex + dstIndex * numVertexElements;
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memcpy(des, result1, sizeof(float)*numVertexElements);
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}
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}
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void OsdCpuComputeEdge(float *vertex, float * varying,
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OsdVertexBufferDescriptor const &vertexDesc,
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OsdVertexBufferDescriptor const &varyingDesc,
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const int *E_IT, const float *E_ITa,
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int vertexOffset, int tableOffset,
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int start, int end);
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template<int numVertexElements>
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void ComputeVertexAKernel( float *vertex,
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const int *V_ITa,
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const float *V_W,
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int vertexOffset,
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int tableOffset,
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int start,
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int end,
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int pass) {
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__ALIGN_DATA float result [numVertexElements];
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__ALIGN_DATA float result1[numVertexElements];
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float *src, *src2, *src3, *des;
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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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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int k = 0; k < numVertexElements; ++k)
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result[k] = 0.0f;
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}
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else {
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memcpy(result1, vertex+dstIndex*numVertexElements,
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sizeof(float)*numVertexElements);
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int k = 0; k < numVertexElements; ++k)
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result[k] = result1[k];
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}
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if (eidx0 == -1 || (pass == 0 && (n == -1))) {
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src = vertex + p * numVertexElements;
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int j = 0; j < numVertexElements; ++j)
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result[j] += src[j] * weight;
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} else {
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src = vertex + p * numVertexElements;
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src2 = vertex + eidx0 * numVertexElements;
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src3 = vertex + eidx1 * numVertexElements;
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int j = 0; j < numVertexElements; ++j)
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result[j] += (src[j]*0.75f + src2[j]*0.125f + src3[j]*0.125f) * weight;
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}
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int k = 0; k < numVertexElements; ++k)
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result1[k] = result[k];
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des = vertex + dstIndex * numVertexElements;
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memcpy(des, result1, sizeof(float)*numVertexElements);
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}
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}
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void OsdCpuComputeVertexA(float *vertex, float * varying,
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OsdVertexBufferDescriptor const &vertexDesc,
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OsdVertexBufferDescriptor const &varyingDesc,
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const int *V_ITa, const float *V_IT,
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int vertexOffset, int tableOffset,
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int start, int end, int pass);
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template<int numVertexElements>
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void ComputeVertexBKernel( float *vertex,
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const int *V_ITa,
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const int *V_IT,
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const float *V_W,
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int vertexOffset,
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int tableOffset,
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int start,
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int end) {
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__ALIGN_DATA float result [numVertexElements];
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__ALIGN_DATA float result1[numVertexElements];
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float *src, *src1, *src2, *des;
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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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src = vertex + p * numVertexElements;
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int j = 0; j < numVertexElements; ++j)
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result[j] = src[j] * weight * wv;
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for (int j = 0; j < n; ++j) {
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int id1 = V_IT[h+2*j];
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int id2 = V_IT[h+2*j+1];
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src1 = vertex + id1 * numVertexElements;
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src2 = vertex + id2 * numVertexElements;
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int k = 0; k < numVertexElements; ++k)
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result[k] += (src1[k]+src2[k]) * weight * wp;
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}
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int j = 0; j < numVertexElements; ++j)
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result1[j] = result[j];
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des = vertex + dstIndex * numVertexElements;
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memcpy(des, result1, sizeof(float)*numVertexElements);
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}
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}
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void OsdCpuComputeVertexB(float *vertex, float * varying,
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OsdVertexBufferDescriptor const &vertexDesc,
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OsdVertexBufferDescriptor const &varyingDesc,
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const int *V_ITa, const int *V_IT, const float *V_W,
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int vertexOffset, int tableOffset,
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int start, int end);
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template<int numVertexElements>
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void ComputeLoopVertexBKernel( float *vertex,
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const int *V_ITa,
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const int *V_IT,
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const float *V_W,
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int vertexOffset,
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int tableOffset,
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int start,
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int end) {
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__ALIGN_DATA float result [numVertexElements];
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__ALIGN_DATA float result1[numVertexElements];
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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 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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src = vertex + p * numVertexElements;
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int k = 0; k < numVertexElements; ++k)
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result[k] = src[k] * weight * (1.0f - (beta * n));
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for (int j = 0; j < n; ++j) {
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src = vertex + V_IT[h+j] * numVertexElements;
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int k = 0; k < numVertexElements; ++k)
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result[k] += src[k] * weight * beta;
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}
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int j = 0; j < numVertexElements; ++j)
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result1[j] = result[j];
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des = vertex + dstIndex * numVertexElements;
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memcpy(des, result1, sizeof(float)*numVertexElements);
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}
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}
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void OsdCpuComputeLoopVertexB(float *vertex, float * varying,
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OsdVertexBufferDescriptor const &vertexDesc,
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OsdVertexBufferDescriptor const &varyingDesc,
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const int *V_ITa, const int *V_IT,
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const float *V_W,
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int vertexOffset, int tableOffset,
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int start, int end);
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template<int numVertexElements>
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void ComputeBilinearEdgeKernel( float *vertex,
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const int *E_IT,
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int vertexOffset,
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int tableOffset,
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int start,
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int end)
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{
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__ALIGN_DATA float result [numVertexElements];
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float *src1, *src2, *des;
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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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src1 = vertex + eidx0 * numVertexElements;
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src2 = vertex + eidx1 * numVertexElements;
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#if defined ( __INTEL_COMPILER ) or defined ( __ICC )
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#pragma simd
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#pragma vector aligned
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#endif
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for (int j = 0; j < numVertexElements; ++j)
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result[j] = 0.5f * (src1[j]+src2[j]);
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int dstIndex = i + vertexOffset - tableOffset;
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des = vertex + dstIndex * numVertexElements;
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memcpy(des, result, sizeof(float)*numVertexElements);
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}
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}
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void OsdCpuComputeBilinearEdge(float *vertex, float * varying,
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OsdVertexBufferDescriptor const &vertexDesc,
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OsdVertexBufferDescriptor const &varyingDesc,
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const int *E_IT,
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int vertexOffset, int tableOffset,
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int start, int end);
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void OsdCpuComputeBilinearVertex(float *vertex, float * varying,
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OsdVertexBufferDescriptor const &vertexDesc,
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OsdVertexBufferDescriptor const &varyingDesc,
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const int *V_ITa,
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int vertexOffset, int tableOffset,
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int start, int end);
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void OsdCpuEditVertexAdd(float *vertex,
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OsdVertexBufferDescriptor const &vertexDesc,
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int primVarOffset, int primVarWidth,
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int vertexOffset, int tableOffset,
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int start, int end,
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const unsigned int *editIndices,
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const float *editValues);
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void OsdCpuEditVertexSet(float *vertex,
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OsdVertexBufferDescriptor const &vertexDesc,
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int primVarOffset, int primVarWidth,
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int vertexOffset, int tableOffset,
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int start, int end,
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const unsigned int *editIndices,
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const float *editValues);
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} // end namespace OPENSUBDIV_VERSION
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using namespace OPENSUBDIV_VERSION;
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} // end namespace OpenSubdiv
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#endif // OSD_CPU_KERNEL_H
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