mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2025-01-09 08:10:07 +00:00
a57dd034e7
Moved transient states (current vertex buffer etc) to controller. ComputeContext becomes constant so that it's well suited for coarse-grain parallelism on cpu. The prims sharing same topology (ComputeContext) can be refined simultaneously by having mutiple compute controllers. Client facing API doesn't change.
156 lines
5.0 KiB
C++
156 lines
5.0 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_GLSL_TRANSFORM_FEEDBACK_COMPUTE_CONTEXT_H
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#define OSD_GLSL_TRANSFORM_FEEDBACK_COMPUTE_CONTEXT_H
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#include "../version.h"
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#include "../far/subdivisionTables.h"
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#include "../far/vertexEditTables.h"
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#include "../osd/vertex.h"
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#include "../osd/vertexDescriptor.h"
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#include "../osd/nonCopyable.h"
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#include "../osd/opengl.h"
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#include <vector>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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class OsdGLSLTransformFeedbackKernelBundle;
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class OsdGLSLTransformFeedbackTable : OsdNonCopyable<OsdGLSLTransformFeedbackTable> {
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public:
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template<typename T>
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OsdGLSLTransformFeedbackTable(const std::vector<T> &table, GLenum type) {
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createTextureBuffer(table.size() * sizeof(unsigned int), table.empty() ? NULL : &table[0], type);
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}
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virtual ~OsdGLSLTransformFeedbackTable();
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GLuint GetTexture() const;
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private:
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void createTextureBuffer(size_t size, const void *ptr, GLenum type);
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GLuint _texture;
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};
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class OsdGLSLTransformFeedbackHEditTable : OsdNonCopyable<OsdGLSLTransformFeedbackHEditTable> {
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public:
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OsdGLSLTransformFeedbackHEditTable(
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const FarVertexEditTables::VertexEditBatch &batch);
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virtual ~OsdGLSLTransformFeedbackHEditTable();
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const OsdGLSLTransformFeedbackTable * GetPrimvarIndices() const;
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const OsdGLSLTransformFeedbackTable * GetEditValues() const;
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int GetOperation() const;
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int GetPrimvarOffset() const;
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int GetPrimvarWidth() const;
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private:
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OsdGLSLTransformFeedbackTable *_primvarIndicesTable;
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OsdGLSLTransformFeedbackTable *_editValuesTable;
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int _operation;
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int _primvarOffset;
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int _primvarWidth;
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};
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///
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/// \brief GLSL (transform-feedback) Refine Context
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///
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/// The GLSL (transform-feedback) implementation of the Refine module contextual functionality.
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///
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/// Contexts interface the serialized topological data pertaining to the
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/// geometric primitives with the capabilities of the selected discrete
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/// compute device.
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///
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class OsdGLSLTransformFeedbackComputeContext {
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public:
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/// Creates an OsdGLSLTransformFeedbackComputeContext instance
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///
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/// @param subdivisionTables the FarSubdivisionTables used for this Context.
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///
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/// @param vertexEditTables the FarVertexEditTables used for this Context.
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///
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static OsdGLSLTransformFeedbackComputeContext * Create(FarSubdivisionTables const *subdivisionTables,
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FarVertexEditTables const *vertexEditTables);
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/// Destructor
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virtual ~OsdGLSLTransformFeedbackComputeContext();
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/// Returns one of the vertex refinement tables.
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///
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/// @param tableIndex the type of table
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///
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const OsdGLSLTransformFeedbackTable * GetTable(int tableIndex) const;
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/// Returns the number of hierarchical edit tables
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int GetNumEditTables() const;
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/// Returns a specific hierarchical edit table
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///
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/// @param tableIndex the index of the table
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///
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const OsdGLSLTransformFeedbackHEditTable * GetEditTable(int tableIndex) const;
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void BindTableTextures(
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OsdGLSLTransformFeedbackKernelBundle const *kernelBundle) const;
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void UnbindTableTextures() const;
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void BindEditTextures(
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int editIndex,
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OsdGLSLTransformFeedbackKernelBundle const *kernelBundle) const;
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void UnbindEditTextures() const;
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protected:
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explicit OsdGLSLTransformFeedbackComputeContext(FarSubdivisionTables const *subdivisionTables,
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FarVertexEditTables const *vertexEditTabes);
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void bindTexture(GLint samplerUniform, GLuint texture, int unit) const;
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void unbindTexture(GLuint unit) const;
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private:
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std::vector<OsdGLSLTransformFeedbackTable*> _tables;
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std::vector<OsdGLSLTransformFeedbackHEditTable*> _editTables;
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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_TRANSFORM_FEEDBACK_COMPUTE_CONTEXT_H
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