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https://github.com/PixarAnimationStudios/OpenSubdiv
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392e5e8bed
While this may be worth revisiting, we should first quantify the benefits and identify the compilers that support it. Ultimately, we may never use pragma once in favor of strictly using standard C++.
243 lines
9.9 KiB
C++
243 lines
9.9 KiB
C++
//
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// Copyright 2015 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 OPENSUBDIV3_OSD_CPU_EVALUATOR_H
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#define OPENSUBDIV3_OSD_CPU_EVALUATOR_H
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#include "../version.h"
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#include <cstddef>
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#include <vector>
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#include "../osd/vertexDescriptor.h"
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#include "../far/patchTables.h"
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Osd {
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/// \brief Coordinates set on a patch table
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/// XXX: this is a temporary structure, exists during Osd refactoring work.
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///
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struct PatchCoord {
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/// \brief Constructor
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///
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/// @param p patch handle
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///
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/// @param s parametric location on the patch
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///
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/// @param t parametric location on the patch
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///
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PatchCoord(Far::PatchTables::PatchHandle handle, float s, float t) :
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handle(handle), s(s), t(t) { }
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Far::PatchTables::PatchHandle handle; ///< patch handle
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float s, t; ///< parametric location on patch
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};
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typedef std::vector<PatchCoord> PatchCoordArray;
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class CpuEvaluator {
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public:
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/// \brief Generic static eval stencils function. This function has a same
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/// signature as other device kernels have so that it can be called
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/// transparently from OsdMesh template interface.
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///
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/// @param srcBuffer Input primvar buffer.
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/// must have BindCpuBuffer() method returning a
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/// const float pointer for read
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///
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/// @param srcDesc vertex buffer descriptor for the input buffer
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///
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/// @param dstBuffer Output primvar buffer
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/// must have BindCpuBuffer() method returning a
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/// float pointer for write
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///
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/// @param dstDesc vertex buffer descriptor for the output buffer
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///
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/// @param stencilTable stencil table to be applied.
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///
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/// @param instance not used in the cpu kernel
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/// (declared as a typed pointer to prevent
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/// undesirable template resolution)
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///
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/// @param deviceContext not used in the cpu kernel
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///
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template <typename SRC_BUFFER, typename DST_BUFFER, typename STENCIL_TABLE>
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static bool EvalStencils(SRC_BUFFER *srcBuffer,
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VertexBufferDescriptor const &srcDesc,
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DST_BUFFER *dstBuffer,
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VertexBufferDescriptor const &dstDesc,
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STENCIL_TABLE const *stencilTable,
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const CpuEvaluator *instance = NULL,
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void * deviceContext = NULL) {
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(void)instance; // unused
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(void)deviceContext; // unused
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return EvalStencils(srcBuffer->BindCpuBuffer(),
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srcDesc,
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dstBuffer->BindCpuBuffer(),
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dstDesc,
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&stencilTable->GetSizes()[0],
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&stencilTable->GetOffsets()[0],
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&stencilTable->GetControlIndices()[0],
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&stencilTable->GetWeights()[0],
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/*start = */ 0,
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/*end = */ stencilTable->GetNumStencils());
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}
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/// stencil evaluate function.
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static bool EvalStencils(const float *src,
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VertexBufferDescriptor const &srcDesc,
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float *dst,
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VertexBufferDescriptor const &dstDesc,
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const int * sizes,
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const int * offsets,
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const int * indices,
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const float * weights,
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int start,
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int end);
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template <typename SRC_BUFFER, typename DST_BUFFER, typename STENCIL_TABLE>
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static bool EvalStencils(SRC_BUFFER *srcBuffer,
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VertexBufferDescriptor const &srcDesc,
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DST_BUFFER *dstBuffer,
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VertexBufferDescriptor const &dstDesc,
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DST_BUFFER *dstDuBuffer,
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VertexBufferDescriptor const &dstDuDesc,
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DST_BUFFER *dstDvBuffer,
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VertexBufferDescriptor const &dstDvDesc,
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STENCIL_TABLE const *stencilTable,
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const CpuEvaluator *evaluator = NULL,
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void * deviceContext = NULL) {
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(void)evaluator; // unused
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(void)deviceContext; // unused
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return EvalStencils(srcBuffer->BindCpuBuffer(),
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srcDesc,
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dstBuffer->BindCpuBuffer(),
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dstDesc,
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dstDuBuffer->BindCpuBuffer(),
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dstDuDesc,
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dstDvBuffer->BindCpuBuffer(),
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dstDvDesc,
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&stencilTable->GetSizes()[0],
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&stencilTable->GetOffsets()[0],
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&stencilTable->GetControlIndices()[0],
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&stencilTable->GetWeights()[0],
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&stencilTable->GetDuWeights()[0],
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&stencilTable->GetDvWeights()[0],
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/*start = */ 0,
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/*end = */ stencilTable->GetNumStencils());
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}
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static bool EvalStencils(const float *src,
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VertexBufferDescriptor const &srcDesc,
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float *dst,
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VertexBufferDescriptor const &dstDesc,
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float *dstDu,
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VertexBufferDescriptor const &dstDuDesc,
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float *dstDv,
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VertexBufferDescriptor const &dstDvDesc,
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const int * sizes,
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const int * offsets,
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const int * indices,
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const float * weights,
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const float * duWeights,
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const float * dvWeights,
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int start,
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int end);
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/// \brief Generic limit eval function. This function has a same
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/// signature as other device kernels have so that it can be called
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/// transparently.
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///
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/// XXX: This interface is still work in progress. XXX
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///
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/// @param srcBuffer Input primvar buffer.
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/// must have BindCpuBuffer() method returning a
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/// const float pointer for read
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///
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/// @param srcDesc vertex buffer descriptor for the input buffer
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///
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/// @param dstBuffer Output primvar buffer
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/// must have BindCpuBuffer() method returning a
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/// float pointer for write
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///
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/// @param dstDesc vertex buffer descriptor for the output buffer
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///
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/// @param patchCoord array of locations to be evaluated.
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///
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/// @param patchTable Far::PatchTable
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///
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/// @param instanced not used in the cpu evaluator
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///
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/// @param deviceContext not used in the cpu evaluator
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///
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template <typename SRC_BUFFER, typename DST_BUFFER>
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static int EvalPatches(SRC_BUFFER *srcBuffer,
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VertexBufferDescriptor const &srcDesc,
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DST_BUFFER *dstBuffer,
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VertexBufferDescriptor const &dstDesc,
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PatchCoordArray const &patchCoords,
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Far::PatchTables const *patchTable,
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CpuEvaluator const *instance,
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void * deviceContext = NULL) {
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(void)instance; // unused
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(void)deviceContext; // unused
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return EvalPatches(srcBuffer->BindCpuBuffer(),
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srcDesc,
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dstBuffer->BindCpuBuffer(),
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dstDesc,
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patchCoords,
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patchTable);
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}
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/// \brief limit eval function.
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static int EvalPatches(const float *src,
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VertexBufferDescriptor const &srcDesc,
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float *dst,
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VertexBufferDescriptor const &dstDesc,
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PatchCoordArray const &patchCoords,
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Far::PatchTables const *patchTable);
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/// \brief synchronize all asynchronous computation invoked on this device.
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static void Synchronize(void * /*deviceContext = NULL*/) {
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// nothing.
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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 // OPENSUBDIV3_OSD_CPU_EVALUATOR_H
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