mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-09-19 14:20:00 +00:00
574 lines
21 KiB
C++
574 lines
21 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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#include "glLoader.h"
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#include "../osd/glComputeEvaluator.h"
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#include "../osd/glslPatchShaderSource.h"
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#include "../far/error.h"
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#include "../far/stencilTable.h"
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#include <cassert>
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#include <sstream>
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#include <cstring>
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#include <vector>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Osd {
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static const char *shaderSource =
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#include "../osd/glslComputeKernel.gen.h"
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;
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template <class T> GLuint
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createSSBO(std::vector<T> const & src) {
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if (src.empty()) {
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return 0;
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}
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GLuint devicePtr = 0;
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#if defined(GL_ARB_direct_state_access)
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if (OSD_OPENGL_HAS(ARB_direct_state_access)) {
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glCreateBuffers(1, &devicePtr);
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glNamedBufferData(devicePtr, src.size()*sizeof(T),
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&src.at(0), GL_STATIC_DRAW);
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} else
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#endif
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{
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GLint prev = 0;
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glGetIntegerv(GL_SHADER_STORAGE_BUFFER_BINDING, &prev);
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glGenBuffers(1, &devicePtr);
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glBindBuffer(GL_SHADER_STORAGE_BUFFER, devicePtr);
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glBufferData(GL_SHADER_STORAGE_BUFFER, src.size()*sizeof(T),
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&src.at(0), GL_STATIC_DRAW);
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glBindBuffer(GL_SHADER_STORAGE_BUFFER, prev);
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}
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return devicePtr;
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}
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GLStencilTableSSBO::GLStencilTableSSBO(
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Far::StencilTable const *stencilTable) {
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_numStencils = stencilTable->GetNumStencils();
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if (_numStencils > 0) {
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_sizes = createSSBO(stencilTable->GetSizes());
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_offsets = createSSBO(stencilTable->GetOffsets());
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_indices = createSSBO(stencilTable->GetControlIndices());
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_weights = createSSBO(stencilTable->GetWeights());
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_duWeights = _dvWeights = 0;
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_duuWeights = _duvWeights = _dvvWeights = 0;
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} else {
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_sizes = _offsets = _indices = _weights = 0;
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_duWeights = _dvWeights = 0;
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_duuWeights = _duvWeights = _dvvWeights = 0;
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}
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}
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GLStencilTableSSBO::GLStencilTableSSBO(
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Far::LimitStencilTable const *limitStencilTable) {
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_numStencils = limitStencilTable->GetNumStencils();
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if (_numStencils > 0) {
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_sizes = createSSBO(limitStencilTable->GetSizes());
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_offsets = createSSBO(limitStencilTable->GetOffsets());
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_indices = createSSBO(limitStencilTable->GetControlIndices());
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_weights = createSSBO(limitStencilTable->GetWeights());
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_duWeights = createSSBO(limitStencilTable->GetDuWeights());
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_dvWeights = createSSBO(limitStencilTable->GetDvWeights());
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_duuWeights = createSSBO(limitStencilTable->GetDuuWeights());
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_duvWeights = createSSBO(limitStencilTable->GetDuvWeights());
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_dvvWeights = createSSBO(limitStencilTable->GetDvvWeights());
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} else {
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_sizes = _offsets = _indices = _weights = 0;
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_duWeights = _dvWeights = 0;
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_duuWeights = _duvWeights = _dvvWeights = 0;
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}
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}
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GLStencilTableSSBO::~GLStencilTableSSBO() {
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if (_sizes) glDeleteBuffers(1, &_sizes);
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if (_offsets) glDeleteBuffers(1, &_offsets);
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if (_indices) glDeleteBuffers(1, &_indices);
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if (_weights) glDeleteBuffers(1, &_weights);
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if (_duWeights) glDeleteBuffers(1, &_duWeights);
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if (_dvWeights) glDeleteBuffers(1, &_dvWeights);
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if (_duuWeights) glDeleteBuffers(1, &_duuWeights);
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if (_duvWeights) glDeleteBuffers(1, &_duvWeights);
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if (_dvvWeights) glDeleteBuffers(1, &_dvvWeights);
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}
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// ---------------------------------------------------------------------------
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GLComputeEvaluator::GLComputeEvaluator()
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: _workGroupSize(64),
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_patchArraysSSBO(0) {
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std::memset((void*) &_stencilKernel, 0, sizeof(_stencilKernel));
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std::memset((void*) &_patchKernel, 0, sizeof(_patchKernel));
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// Initialize internal OpenGL loader library if necessary
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OpenSubdiv::internal::GLLoader::libraryInitializeGL();
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}
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GLComputeEvaluator::~GLComputeEvaluator() {
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if (_patchArraysSSBO) {
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glDeleteBuffers(1, &_patchArraysSSBO);
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}
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}
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static GLuint
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compileKernel(BufferDescriptor const &srcDesc,
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BufferDescriptor const &dstDesc,
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BufferDescriptor const & duDesc,
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BufferDescriptor const & dvDesc,
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BufferDescriptor const & duuDesc,
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BufferDescriptor const & duvDesc,
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BufferDescriptor const & dvvDesc,
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const char *kernelDefine,
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int workGroupSize) {
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GLuint program = glCreateProgram();
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GLuint shader = glCreateShader(GL_COMPUTE_SHADER);
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std::string patchBasisShaderSource =
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GLSLPatchShaderSource::GetPatchBasisShaderSource();
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const char *patchBasisShaderSourceDefine = "#define OSD_PATCH_BASIS_GLSL\n";
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std::ostringstream defines;
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defines << "#define LENGTH " << srcDesc.length << "\n"
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<< "#define SRC_STRIDE " << srcDesc.stride << "\n"
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<< "#define DST_STRIDE " << dstDesc.stride << "\n"
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<< "#define WORK_GROUP_SIZE " << workGroupSize << "\n"
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<< kernelDefine << "\n"
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<< patchBasisShaderSourceDefine << "\n";
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bool deriv1 = (duDesc.length > 0 || dvDesc.length > 0);
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bool deriv2 = (duuDesc.length > 0 || duvDesc.length > 0 || dvvDesc.length > 0);
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if (deriv1) {
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defines << "#define OPENSUBDIV_GLSL_COMPUTE_USE_1ST_DERIVATIVES\n";
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}
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if (deriv2) {
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defines << "#define OPENSUBDIV_GLSL_COMPUTE_USE_2ND_DERIVATIVES\n";
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}
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std::string defineStr = defines.str();
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const char *shaderSources[4] = {"#version 430\n", 0, 0, 0};
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shaderSources[1] = defineStr.c_str();
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shaderSources[2] = patchBasisShaderSource.c_str();
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shaderSources[3] = shaderSource;
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glShaderSource(shader, 4, shaderSources, NULL);
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glCompileShader(shader);
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glAttachShader(program, shader);
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GLint linked = 0;
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glLinkProgram(program);
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glGetProgramiv(program, GL_LINK_STATUS, &linked);
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if (linked == GL_FALSE) {
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char buffer[1024];
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glGetShaderInfoLog(shader, 1024, NULL, buffer);
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Far::Error(Far::FAR_RUNTIME_ERROR, buffer);
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glGetProgramInfoLog(program, 1024, NULL, buffer);
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Far::Error(Far::FAR_RUNTIME_ERROR, buffer);
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glDeleteProgram(program);
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return 0;
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}
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glDeleteShader(shader);
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return program;
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}
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bool
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GLComputeEvaluator::Compile(BufferDescriptor const &srcDesc,
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BufferDescriptor const &dstDesc,
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BufferDescriptor const &duDesc,
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BufferDescriptor const &dvDesc,
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BufferDescriptor const &duuDesc,
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BufferDescriptor const &duvDesc,
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BufferDescriptor const &dvvDesc) {
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// create a stencil kernel
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if (!_stencilKernel.Compile(srcDesc, dstDesc,
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duDesc, dvDesc,
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duuDesc, duvDesc, dvvDesc,
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_workGroupSize)) {
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return false;
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}
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// create a patch kernel
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if (!_patchKernel.Compile(srcDesc, dstDesc,
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duDesc, dvDesc,
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duuDesc, duvDesc, dvvDesc,
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_workGroupSize)) {
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return false;
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}
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// create a patch arrays buffer
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if (!_patchArraysSSBO) {
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glGenBuffers(1, &_patchArraysSSBO);
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}
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return true;
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}
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/* static */
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void
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GLComputeEvaluator::Synchronize(void * /*kernel*/) {
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// XXX: this is currently just for the performance measuring purpose.
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// need to be reimplemented by fence and sync.
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glFinish();
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}
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bool
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GLComputeEvaluator::EvalStencils(
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GLuint srcBuffer, BufferDescriptor const &srcDesc,
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GLuint dstBuffer, BufferDescriptor const &dstDesc,
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GLuint duBuffer, BufferDescriptor const &duDesc,
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GLuint dvBuffer, BufferDescriptor const &dvDesc,
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GLuint sizesBuffer,
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GLuint offsetsBuffer,
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GLuint indicesBuffer,
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GLuint weightsBuffer,
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GLuint duWeightsBuffer,
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GLuint dvWeightsBuffer,
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int start, int end) const {
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return EvalStencils(srcBuffer, srcDesc,
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dstBuffer, dstDesc,
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duBuffer, duDesc,
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dvBuffer, dvDesc,
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0, BufferDescriptor(),
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0, BufferDescriptor(),
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0, BufferDescriptor(),
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sizesBuffer, offsetsBuffer, indicesBuffer,
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weightsBuffer,
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duWeightsBuffer, dvWeightsBuffer,
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0, 0, 0,
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start, end);
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}
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bool
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GLComputeEvaluator::EvalStencils(
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GLuint srcBuffer, BufferDescriptor const &srcDesc,
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GLuint dstBuffer, BufferDescriptor const &dstDesc,
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GLuint duBuffer, BufferDescriptor const &duDesc,
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GLuint dvBuffer, BufferDescriptor const &dvDesc,
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GLuint duuBuffer, BufferDescriptor const &duuDesc,
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GLuint duvBuffer, BufferDescriptor const &duvDesc,
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GLuint dvvBuffer, BufferDescriptor const &dvvDesc,
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GLuint sizesBuffer,
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GLuint offsetsBuffer,
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GLuint indicesBuffer,
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GLuint weightsBuffer,
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GLuint duWeightsBuffer,
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GLuint dvWeightsBuffer,
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GLuint duuWeightsBuffer,
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GLuint duvWeightsBuffer,
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GLuint dvvWeightsBuffer,
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int start, int end) const {
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if (!_stencilKernel.program) return false;
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int count = end - start;
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if (count <= 0) {
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return true;
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}
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, srcBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, dstBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, duBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 3, dvBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 10, duuBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 11, duvBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 12, dvvBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 4, sizesBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 5, offsetsBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 6, indicesBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 7, weightsBuffer);
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if (duWeightsBuffer)
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 8, duWeightsBuffer);
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if (dvWeightsBuffer)
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 9, dvWeightsBuffer);
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if (duuWeightsBuffer)
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 13, duuWeightsBuffer);
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if (duvWeightsBuffer)
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 14, duvWeightsBuffer);
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if (dvvWeightsBuffer)
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 15, dvvWeightsBuffer);
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GLint activeProgram;
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glGetIntegerv(GL_CURRENT_PROGRAM, &activeProgram);
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glUseProgram(_stencilKernel.program);
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glUniform1i(_stencilKernel.uniformStart, start);
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glUniform1i(_stencilKernel.uniformEnd, end);
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glUniform1i(_stencilKernel.uniformSrcOffset, srcDesc.offset);
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glUniform1i(_stencilKernel.uniformDstOffset, dstDesc.offset);
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if (_stencilKernel.uniformDuDesc > 0) {
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glUniform3i(_stencilKernel.uniformDuDesc,
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duDesc.offset, duDesc.length, duDesc.stride);
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}
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if (_stencilKernel.uniformDvDesc > 0) {
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glUniform3i(_stencilKernel.uniformDvDesc,
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dvDesc.offset, dvDesc.length, dvDesc.stride);
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}
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if (_stencilKernel.uniformDuuDesc > 0) {
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glUniform3i(_stencilKernel.uniformDuuDesc,
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duuDesc.offset, duuDesc.length, duuDesc.stride);
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}
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if (_stencilKernel.uniformDuvDesc > 0) {
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glUniform3i(_stencilKernel.uniformDuvDesc,
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duvDesc.offset, duvDesc.length, duvDesc.stride);
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}
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if (_stencilKernel.uniformDvvDesc > 0) {
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glUniform3i(_stencilKernel.uniformDvvDesc,
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dvvDesc.offset, dvvDesc.length, dvvDesc.stride);
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}
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glDispatchCompute((count + _workGroupSize - 1) / _workGroupSize, 1, 1);
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glUseProgram(activeProgram);
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glMemoryBarrier(GL_TEXTURE_FETCH_BARRIER_BIT);
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for (int i = 0; i < 16; ++i) {
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, i, 0);
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}
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return true;
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}
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bool
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GLComputeEvaluator::EvalPatches(
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GLuint srcBuffer, BufferDescriptor const &srcDesc,
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GLuint dstBuffer, BufferDescriptor const &dstDesc,
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GLuint duBuffer, BufferDescriptor const &duDesc,
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GLuint dvBuffer, BufferDescriptor const &dvDesc,
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int numPatchCoords,
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GLuint patchCoordsBuffer,
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const PatchArrayVector &patchArrays,
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GLuint patchIndexBuffer,
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GLuint patchParamsBuffer) const {
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return EvalPatches(srcBuffer, srcDesc,
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dstBuffer, dstDesc,
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duBuffer, duDesc,
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dvBuffer, dvDesc,
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0, BufferDescriptor(),
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0, BufferDescriptor(),
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0, BufferDescriptor(),
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numPatchCoords,
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patchCoordsBuffer,
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patchArrays,
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patchIndexBuffer,
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patchParamsBuffer);
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}
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bool
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GLComputeEvaluator::EvalPatches(
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GLuint srcBuffer, BufferDescriptor const &srcDesc,
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GLuint dstBuffer, BufferDescriptor const &dstDesc,
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GLuint duBuffer, BufferDescriptor const &duDesc,
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GLuint dvBuffer, BufferDescriptor const &dvDesc,
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GLuint duuBuffer, BufferDescriptor const &duuDesc,
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GLuint duvBuffer, BufferDescriptor const &duvDesc,
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GLuint dvvBuffer, BufferDescriptor const &dvvDesc,
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int numPatchCoords,
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GLuint patchCoordsBuffer,
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const PatchArrayVector &patchArrays,
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GLuint patchIndexBuffer,
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GLuint patchParamsBuffer) const {
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if (!_patchKernel.program) return false;
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, srcBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, dstBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, duBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 3, dvBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 10, duuBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 11, duvBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 12, dvvBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 5, patchCoordsBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 6, patchIndexBuffer);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 7, patchParamsBuffer);
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GLint activeProgram;
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glGetIntegerv(GL_CURRENT_PROGRAM, &activeProgram);
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glUseProgram(_patchKernel.program);
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glUniform1i(_patchKernel.uniformSrcOffset, srcDesc.offset);
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glUniform1i(_patchKernel.uniformDstOffset, dstDesc.offset);
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int patchArraySize = sizeof(PatchArray);
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glBindBuffer(GL_SHADER_STORAGE_BUFFER, _patchArraysSSBO);
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glBufferData(GL_SHADER_STORAGE_BUFFER,
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patchArrays.size()*patchArraySize, NULL, GL_STATIC_DRAW);
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for (int i=0; i<(int)patchArrays.size(); ++i) {
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glBufferSubData(GL_SHADER_STORAGE_BUFFER,
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i*patchArraySize, sizeof(PatchArray), &patchArrays[i]);
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}
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 4, _patchArraysSSBO);
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if (_patchKernel.uniformDuDesc > 0) {
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glUniform3i(_patchKernel.uniformDuDesc,
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duDesc.offset, duDesc.length, duDesc.stride);
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}
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if (_patchKernel.uniformDvDesc > 0) {
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glUniform3i(_patchKernel.uniformDvDesc,
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dvDesc.offset, dvDesc.length, dvDesc.stride);
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}
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if (_patchKernel.uniformDuuDesc > 0) {
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glUniform3i(_patchKernel.uniformDuuDesc,
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duuDesc.offset, duuDesc.length, duuDesc.stride);
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}
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if (_patchKernel.uniformDuvDesc > 0) {
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glUniform3i(_patchKernel.uniformDuvDesc,
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duvDesc.offset, duvDesc.length, duvDesc.stride);
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}
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if (_patchKernel.uniformDvvDesc > 0) {
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glUniform3i(_patchKernel.uniformDvvDesc,
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dvvDesc.offset, dvvDesc.length, dvvDesc.stride);
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}
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glDispatchCompute((numPatchCoords + _workGroupSize - 1) / _workGroupSize, 1, 1);
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glUseProgram(activeProgram);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, 0);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, 0);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, 0);
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glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 3, 0);
|
|
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 4, 0);
|
|
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 5, 0);
|
|
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 6, 0);
|
|
|
|
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 10, 0);
|
|
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 11, 0);
|
|
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 12, 0);
|
|
|
|
return true;
|
|
}
|
|
// ---------------------------------------------------------------------------
|
|
|
|
GLComputeEvaluator::_StencilKernel::_StencilKernel() : program(0) {
|
|
}
|
|
GLComputeEvaluator::_StencilKernel::~_StencilKernel() {
|
|
if (program) {
|
|
glDeleteProgram(program);
|
|
}
|
|
}
|
|
|
|
bool
|
|
GLComputeEvaluator::_StencilKernel::Compile(BufferDescriptor const &srcDesc,
|
|
BufferDescriptor const &dstDesc,
|
|
BufferDescriptor const &duDesc,
|
|
BufferDescriptor const &dvDesc,
|
|
BufferDescriptor const &duuDesc,
|
|
BufferDescriptor const &duvDesc,
|
|
BufferDescriptor const &dvvDesc,
|
|
int workGroupSize) {
|
|
// create stencil kernel
|
|
if (program) {
|
|
glDeleteProgram(program);
|
|
}
|
|
|
|
const char * kernelDefine =
|
|
"#define OPENSUBDIV_GLSL_COMPUTE_KERNEL_EVAL_STENCILS\n";
|
|
|
|
program = compileKernel(srcDesc, dstDesc,
|
|
duDesc, dvDesc, duuDesc, duvDesc, dvvDesc,
|
|
kernelDefine, workGroupSize);
|
|
if (program == 0) return false;
|
|
|
|
// cache uniform locations (TODO: use uniform block)
|
|
uniformStart = glGetUniformLocation(program, "batchStart");
|
|
uniformEnd = glGetUniformLocation(program, "batchEnd");
|
|
uniformSrcOffset = glGetUniformLocation(program, "srcOffset");
|
|
uniformDstOffset = glGetUniformLocation(program, "dstOffset");
|
|
uniformDuDesc = glGetUniformLocation(program, "duDesc");
|
|
uniformDvDesc = glGetUniformLocation(program, "dvDesc");
|
|
uniformDuuDesc = glGetUniformLocation(program, "duuDesc");
|
|
uniformDuvDesc = glGetUniformLocation(program, "duvDesc");
|
|
uniformDvvDesc = glGetUniformLocation(program, "dvvDesc");
|
|
|
|
return true;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
GLComputeEvaluator::_PatchKernel::_PatchKernel() : program(0) {
|
|
}
|
|
GLComputeEvaluator::_PatchKernel::~_PatchKernel() {
|
|
if (program) {
|
|
glDeleteProgram(program);
|
|
}
|
|
}
|
|
|
|
bool
|
|
GLComputeEvaluator::_PatchKernel::Compile(BufferDescriptor const &srcDesc,
|
|
BufferDescriptor const &dstDesc,
|
|
BufferDescriptor const &duDesc,
|
|
BufferDescriptor const &dvDesc,
|
|
BufferDescriptor const &duuDesc,
|
|
BufferDescriptor const &duvDesc,
|
|
BufferDescriptor const &dvvDesc,
|
|
int workGroupSize) {
|
|
// create stencil kernel
|
|
if (program) {
|
|
glDeleteProgram(program);
|
|
}
|
|
|
|
const char * kernelDefine =
|
|
"#define OPENSUBDIV_GLSL_COMPUTE_KERNEL_EVAL_PATCHES\n";
|
|
|
|
program = compileKernel(srcDesc, dstDesc,
|
|
duDesc, dvDesc, duuDesc, duvDesc, dvvDesc,
|
|
kernelDefine, workGroupSize);
|
|
if (program == 0) return false;
|
|
|
|
// cache uniform locations
|
|
uniformSrcOffset = glGetUniformLocation(program, "srcOffset");
|
|
uniformDstOffset = glGetUniformLocation(program, "dstOffset");
|
|
uniformPatchArray = glGetUniformLocation(program, "patchArray");
|
|
uniformDuDesc = glGetUniformLocation(program, "duDesc");
|
|
uniformDvDesc = glGetUniformLocation(program, "dvDesc");
|
|
uniformDuuDesc = glGetUniformLocation(program, "duuDesc");
|
|
uniformDuvDesc = glGetUniformLocation(program, "duvDesc");
|
|
uniformDvvDesc = glGetUniformLocation(program, "dvvDesc");
|
|
|
|
return true;
|
|
}
|
|
|
|
} // end namespace Osd
|
|
|
|
} // end namespace OPENSUBDIV_VERSION
|
|
} // end namespace OpenSubdiv
|