mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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6f5d1e34be
- add bool OsdGLDrawContext::SupportsAdaptiveTessellation() method - modify glViewer to use that instead of #ifdefs Note : this is not the final word on this as OSD really needs a more comprehensive system to provide run-time information about available features to the client code. fixes #111
147 lines
5.2 KiB
C++
147 lines
5.2 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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#ifndef OSD_GL_DRAW_CONTEXT_H
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#define OSD_GL_DRAW_CONTEXT_H
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#if defined(__APPLE__)
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#include "TargetConditionals.h"
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#if TARGET_OS_IPHONE or TARGET_IPHONE_SIMULATOR
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#include <OpenGLES/ES2/gl.h>
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#else
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#include <OpenGL/gl3.h>
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#endif
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#elif defined(ANDROID)
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#include <GLES2/gl2.h>
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#else
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#if defined(_WIN32)
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#include <windows.h>
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#endif
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#include <GL/gl.h>
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#endif
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#include "../version.h"
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#include "../far/mesh.h"
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#include "../osd/drawContext.h"
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#include "../osd/drawRegistry.h"
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#include "../osd/vertex.h"
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#include <map>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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class OsdGLDrawContext : public OsdDrawContext {
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public:
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typedef GLuint VertexBufferBinding;
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OsdGLDrawContext();
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virtual ~OsdGLDrawContext();
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template<class VERTEX_BUFFER>
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static OsdGLDrawContext *
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Create(FarMesh<OsdVertex> *farMesh,
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VERTEX_BUFFER *vertexBuffer,
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bool requirePtexCoordinates=false,
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bool requireFVarData=false) {
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if (not vertexBuffer)
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return NULL;
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OsdGLDrawContext * instance = new OsdGLDrawContext();
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if (instance->allocate(farMesh,
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vertexBuffer->BindVBO(),
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vertexBuffer->GetNumElements(),
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requirePtexCoordinates,
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requireFVarData)) return instance;
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delete instance;
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return NULL;
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}
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GLuint patchIndexBuffer;
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#if defined(GL_ES_VERSION_2_0)
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GLuint patchTrianglesIndexBuffer;
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#endif
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GLuint ptexCoordinateTextureBuffer;
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GLuint fvarDataTextureBuffer;
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GLuint vertexTextureBuffer;
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GLuint vertexValenceTextureBuffer;
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GLuint quadOffsetTextureBuffer;
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GLuint patchLevelTextureBuffer;
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/// true if the GL version detected supports shader tessellation
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static bool SupportsAdaptiveTessellation();
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private:
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bool allocate(FarMesh<OsdVertex> *farMesh,
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GLuint vbo, int numElements,
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bool requirePtexCoordinates,
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bool requireFVarData);
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void _AppendPatchArray(
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int *indexBase, int *levelBase,
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FarPatchTables::PTable const & ptable, int patchSize,
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FarPatchTables::PtexCoordinateTable const & ptexTable,
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FarPatchTables::FVarDataTable const & fvarTable, int fvarDataWidth,
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OsdPatchDescriptor const & desc,
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int gregoryQuadOffsetBase);
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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_DRAW_CONTEXT_H */
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