mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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239 lines
9.8 KiB
C++
239 lines
9.8 KiB
C++
//
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// Copyright (C) Pixar. All rights reserved.
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//
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// This license governs use of the accompanying software. If you
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// use the software, you accept this license. If you do not accept
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// the license, do not use the software.
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//
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// 1. Definitions
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// The terms "reproduce," "reproduction," "derivative works," and
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// "distribution" have the same meaning here as under U.S.
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// copyright law. A "contribution" is the original software, or
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// any additions or changes to the software.
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// A "contributor" is any person or entity that distributes its
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// contribution under this license.
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// "Licensed patents" are a contributor's patent claims that read
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// directly on its contribution.
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//
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// 2. Grant of Rights
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// (A) Copyright Grant- Subject to the terms of this license,
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// including the license conditions and limitations in section 3,
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// each contributor grants you a non-exclusive, worldwide,
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// royalty-free copyright license to reproduce its contribution,
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// prepare derivative works of its contribution, and distribute
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// its contribution or any derivative works that you create.
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// (B) Patent Grant- Subject to the terms of this license,
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// including the license conditions and limitations in section 3,
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// each contributor grants you a non-exclusive, worldwide,
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// royalty-free license under its licensed patents to make, have
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// made, use, sell, offer for sale, import, and/or otherwise
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// dispose of its contribution in the software or derivative works
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// of the contribution in the software.
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//
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// 3. Conditions and Limitations
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// (A) No Trademark License- This license does not grant you
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// rights to use any contributor's name, logo, or trademarks.
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// (B) If you bring a patent claim against any contributor over
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// patents that you claim are infringed by the software, your
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// patent license from such contributor to the software ends
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// automatically.
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// (C) If you distribute any portion of the software, you must
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// retain all copyright, patent, trademark, and attribution
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// notices that are present in the software.
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// (D) If you distribute any portion of the software in source
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// code form, you may do so only under this license by including a
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// complete copy of this license with your distribution. If you
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// distribute any portion of the software in compiled or object
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// code form, you may only do so under a license that complies
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// with this license.
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// (E) The software is licensed "as-is." You bear the risk of
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// using it. The contributors give no express warranties,
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// guarantees or conditions. You may have additional consumer
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// rights under your local laws which this license cannot change.
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// To the extent permitted under your local laws, the contributors
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// exclude the implied warranties of merchantability, fitness for
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// a particular purpose and non-infringement.
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//
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#ifndef OSD_GLSL_DISPATCHER_H
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#define OSD_GLSL_DISPATCHER_H
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#if not defined(__APPLE__)
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#include <GL/gl.h>
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#else
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#include <OpenGL/gl.h>
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#endif
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#include "../version.h"
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#include "../osd/kernelDispatcher.h"
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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class OsdGlslKernelDispatcher : public OsdKernelDispatcher {
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public:
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OsdGlslKernelDispatcher(int levels);
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virtual ~OsdGlslKernelDispatcher();
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virtual void ApplyBilinearFaceVerticesKernel(FarMesh<OsdVertex> * mesh, int offset, int level, int start, int end, void * data) const;
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virtual void ApplyBilinearEdgeVerticesKernel(FarMesh<OsdVertex> * mesh, int offset, int level, int start, int end, void * data) const;
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virtual void ApplyBilinearVertexVerticesKernel(FarMesh<OsdVertex> * mesh, int offset, int level, int start, int end, void * data) const;
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virtual void ApplyCatmarkFaceVerticesKernel(FarMesh<OsdVertex> * mesh, int offset, int level, int start, int end, void * data) const;
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virtual void ApplyCatmarkEdgeVerticesKernel(FarMesh<OsdVertex> * mesh, int offset, int level, int start, int end, void * data) const;
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virtual void ApplyCatmarkVertexVerticesKernelB(FarMesh<OsdVertex> * mesh, int offset, int level, int start, int end, void * data) const;
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virtual void ApplyCatmarkVertexVerticesKernelA(FarMesh<OsdVertex> * mesh, int offset, bool pass, int level, int start, int end, void * data) const;
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virtual void ApplyLoopEdgeVerticesKernel(FarMesh<OsdVertex> * mesh, int offset, int level, int start, int end, void * data) const;
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virtual void ApplyLoopVertexVerticesKernelB(FarMesh<OsdVertex> * mesh, int offset, int level, int start, int end, void * data) const;
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virtual void ApplyLoopVertexVerticesKernelA(FarMesh<OsdVertex> * mesh, int offset, bool pass, int level, int start, int end, void * data) const;
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virtual void CopyTable(int tableIndex, size_t size, const void *ptr);
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virtual void OnKernelLaunch();
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virtual void OnKernelFinish();
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virtual OsdVertexBuffer *InitializeVertexBuffer(int numElements, int numVertices);
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virtual void BindVertexBuffer(OsdVertexBuffer *vertex, OsdVertexBuffer *varying);
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virtual void UnbindVertexBuffer();
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virtual void Synchronize();
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static OsdKernelDispatcher * Create(int levels) {
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return new OsdGlslKernelDispatcher(levels);
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}
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static void Register() {
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Factory::GetInstance().Register(Create, kGLSL);
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}
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protected:
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class ComputeShader {
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public:
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ComputeShader();
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~ComputeShader();
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bool Compile(int numVertexElements, int numVaryingElements);
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GLuint GetTableUniform(int table) const {
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return _tableUniforms[table];
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}
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GLuint GetVertexUniform() const { return _vertexUniform; }
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GLuint GetVaryingUniform() const { return _varyingUniform; }
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void ApplyBilinearFaceVerticesKernel(OsdGpuVertexBuffer *vertex, OsdGpuVertexBuffer *varying, int F_IT_ofs, int F_ITa_ofs, int offset, int start, int end);
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void ApplyBilinearEdgeVerticesKernel(OsdGpuVertexBuffer *vertex, OsdGpuVertexBuffer *varying, int E_IT_ofs, int offset, int start, int end);
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void ApplyBilinearVertexVerticesKernel(OsdGpuVertexBuffer *vertex, OsdGpuVertexBuffer *varying, int V_ITa_ofs, int offset, int start, int end);
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void ApplyCatmarkFaceVerticesKernel(OsdGpuVertexBuffer *vertex, OsdGpuVertexBuffer *varying, int F_IT_ofs, int F_ITa_ofs, int offset, int start, int end);
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void ApplyCatmarkEdgeVerticesKernel(OsdGpuVertexBuffer *vertex, OsdGpuVertexBuffer *varying, int E_IT_ofs, int E_W_ofs, int offset, int start, int end);
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void ApplyCatmarkVertexVerticesKernelB(OsdGpuVertexBuffer *vertex, OsdGpuVertexBuffer *varying, int V_IT_ofs, int V_ITa_ofs, int V_W_ofs, int offset, int start, int end);
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void ApplyCatmarkVertexVerticesKernelA(OsdGpuVertexBuffer *vertex, OsdGpuVertexBuffer *varying, int V_ITa_ofs, int V_W_ofs, int offset, bool pass, int start, int end);
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void ApplyLoopEdgeVerticesKernel(OsdGpuVertexBuffer *vertex, OsdGpuVertexBuffer *varying, int E_IT_ofs, int E_W_ofs, int offset, int start, int end);
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void ApplyLoopVertexVerticesKernelB(OsdGpuVertexBuffer *vertex, OsdGpuVertexBuffer *varying, int V_IT_ofs, int V_ITa_ofs, int V_W_ofs, int offset, int start, int end);
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void ApplyLoopVertexVerticesKernelA(OsdGpuVertexBuffer *vertex, OsdGpuVertexBuffer *varying, int V_ITa_ofs, int V_W_ofs, int offset, bool pass, int start, int end);
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void UseProgram () const;
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struct Match {
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Match(int numVertexElements, int numVaryingElements) :
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_numVertexElements(numVertexElements), _numVaryingElements(numVaryingElements) { }
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bool operator() (ComputeShader const & shader) {
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return (shader._numVertexElements == _numVertexElements
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&& shader._numVaryingElements == _numVaryingElements);
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}
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int _numVertexElements,
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_numVaryingElements;
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};
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friend struct Match;
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private:
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void transformGpuBufferData(OsdGpuVertexBuffer *vertex, OsdGpuVertexBuffer *varying,
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GLint offset, int start, int end) const;
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int _numVertexElements;
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int _numVaryingElements;
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GLuint _program;
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GLuint _uniformVertexPass;
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GLuint _uniformIndexStart;
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GLuint _uniformIndexOffset;
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GLuint _vertexUniform,
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_varyingUniform;
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// shader locations
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GLuint _subComputeFace, // general face-vertex kernel (all schemes)
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_subComputeEdge, // edge-vertex kernel (catmark + loop schemes)
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_subComputeBilinearEdge, // edge-vertex kernel (bilinear scheme)
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_subComputeVertex, // vertex-vertex kernel (bilinear scheme)
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_subComputeVertexA, // vertex-vertex kernel A (catmark + loop schemes)
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_subComputeCatmarkVertexB, // vertex-vertex kernel B (catmark scheme)
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_subComputeLoopVertexB; // vertex-vertex kernel B (loop scheme)
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std::vector<GLuint> _tableUniforms;
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std::vector<GLuint> _tableOffsetUniforms;
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};
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void bindTextureBuffer(GLuint sampler, GLuint buffer, GLuint texture, GLenum type, int unit) const;
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void unbindTextureBuffer(int unit) const;
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ComputeShader * _shader;
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// texture for vertex
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GLuint _vertexTexture,
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_varyingTexture;
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OsdGpuVertexBuffer *_currentVertexBuffer,
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*_currentVaryingBuffer;
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// table buffers
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std::vector<GLuint> _tableBuffers;
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std::vector<GLuint> _tableTextures;
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// static shader registry (XXX tentative..)
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static std::vector<ComputeShader> shaderRegistry;
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};
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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_GLSL_DISPATCHER_H
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