mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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c399655dcc
Sync'ing the 'dev' branch with the 'feature_3.0dev' branch at commit 68c6d11fc36761ae1a5e6cdc3457be16f2e9704a The branch 'feature_3.0dev' is now locked and preserved for historical purposes.
123 lines
3.4 KiB
C++
123 lines
3.4 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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#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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namespace Osd {
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struct VertexDescriptor;
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void
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CpuComputeStencils(VertexBufferDescriptor const &vertexDesc,
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float const * vertexSrc,
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float * vertexDst,
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unsigned char const * sizes,
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int const * offsets,
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int const * indices,
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float const * weights,
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int start, int end);
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//
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// SIMD ICC optimization of the stencil kernel
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//
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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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// Note : this function is re-used in the TBB Compute kernel
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template <int numElems> void
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ComputeStencilKernel(float const * vertexSrc,
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float * vertexDst,
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unsigned char const * sizes,
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int const * indices,
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float const * weights,
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int start,
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int end) {
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__ALIGN_DATA float result[numElems],
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result1[numElems];
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float const * src;
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float * dst, weight;
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for (int i=start; i<end; ++i) {
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// Clear
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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<numElems; ++k)
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result[k] = 0.0f;
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for (int j=0; j<sizes[i]; ++j, ++indices, ++weights) {
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src = vertexSrc + (*indices)*numElems;
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weight = *weights;
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// AddWithWeight
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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<numElems; ++k) {
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result[k] += src[k] * weight;
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}
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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<numElems; ++k) {
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result1[k] = result[k];
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}
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dst = vertexDst + i*numElems;
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memcpy(dst, result1, numElems*sizeof(float));
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}
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}
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} // end namespace Osd
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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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