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You may have additional consumer // rights under your local laws which this license cannot change. // To the extent permitted under your local laws, the contributors // exclude the implied warranties of merchantability, fitness for // a particular purpose and non-infringement. // #ifndef OSD_GL_DRAW_CONTEXT_H #define OSD_GL_DRAW_CONTEXT_H #if defined(__APPLE__) #include "TargetConditionals.h" #if TARGET_OS_IPHONE or TARGET_IPHONE_SIMULATOR #include #else #include #endif #elif defined(ANDROID) #include #else #if defined(_WIN32) #include #endif #include #endif #include "../version.h" #include "../far/mesh.h" #include "../osd/drawContext.h" #include "../osd/drawRegistry.h" #include "../osd/vertex.h" #include namespace OpenSubdiv { namespace OPENSUBDIV_VERSION { /// \brief OpenGL specialized DrawContext class /// /// OsdGLDrawContext implements the OSD drawing interface with the OpenGL API. /// Some functionality may be disabled depending on compile and run-time driver /// support. /// /// Contexts interface the serialized topological data pertaining to the /// geometric primitives with the capabilities of the selected discrete /// compute device. /// class OsdGLDrawContext : public OsdDrawContext { public: typedef GLuint VertexBufferBinding; virtual ~OsdGLDrawContext(); /// \brief Create an OsdGLDraContext from FarPatchTables /// /// @param patchTables a valid set of FarPatchTables /// /// @param requireFVarData set to true to enable face-varying data to be /// carried over from the Far data structures. /// static OsdGLDrawContext * Create(FarPatchTables const * patchTables, bool requireFVarData); /// Set vbo as a vertex texture (for gregory patch drawing) /// /// @param vbo the vertex buffer object to update /// template void UpdateVertexTexture(VERTEX_BUFFER *vbo) { updateVertexTexture(vbo->BindVBO(), vbo->GetNumElements()); } /// true if the GL version detected supports shader tessellation static bool SupportsAdaptiveTessellation(); GLuint patchIndexBuffer; #if defined(GL_ES_VERSION_2_0) GLuint patchTrianglesIndexBuffer; #endif GLuint ptexCoordinateTextureBuffer; GLuint fvarDataTextureBuffer; GLuint vertexTextureBuffer; GLuint vertexValenceTextureBuffer; GLuint quadOffsetTextureBuffer; protected: OsdGLDrawContext(); // allocate buffers from patchTables bool create(FarPatchTables const *patchTables, bool requireFVarData); void updateVertexTexture(GLuint vbo, int numElements); }; } // end namespace OPENSUBDIV_VERSION using namespace OPENSUBDIV_VERSION; } // end namespace OpenSubdiv #endif /* OSD_DRAW_CONTEXT_H */