Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/opensubdiv-source/opensubdiv/osd/glPatchTable.h

@@ -0,0 +1,139 @@
+//
+//   Copyright 2015 Pixar
+//
+//   Licensed under the terms set forth in the LICENSE.txt file available at
+//   https://opensubdiv.org/license.
+//
+
+#ifndef OPENSUBDIV3_OSD_GL_PATCH_TABLE_H
+#define OPENSUBDIV3_OSD_GL_PATCH_TABLE_H
+
+#include "../version.h"
+
+#include "../osd/nonCopyable.h"
+#include "../osd/types.h"
+
+#include <vector>
+
+namespace OpenSubdiv {
+namespace OPENSUBDIV_VERSION {
+
+namespace Far{
+    class PatchTable;
+};
+
+namespace Osd {
+
+class GLPatchTable : private NonCopyable<GLPatchTable> {
+public:
+    using ID = unsigned int;        // GLuint resource ID
+    using VertexBufferBinding = ID; // buffer binding type
+
+    ~GLPatchTable();
+
+    static GLPatchTable *Create(Far::PatchTable const *farPatchTable,
+                                void *deviceContext = NULL);
+
+    /// Returns the patch arrays for vertex index buffer data
+    PatchArrayVector const &GetPatchArrays() const {
+        return _patchArrays;
+    }
+
+    /// Returns the GL index buffer containing the patch control vertices
+    ID GetPatchIndexBuffer() const {
+        return _patchIndexBuffer;
+    }
+
+    /// Returns the GL index buffer containing the patch parameter
+    ID GetPatchParamBuffer() const {
+        return _patchParamBuffer;
+    }
+
+    /// Returns the GL texture buffer containing the patch control vertices
+    ID GetPatchIndexTextureBuffer() const {
+        return _patchIndexTexture;
+    }
+
+    /// Returns the GL texture buffer containing the patch parameter
+    ID GetPatchParamTextureBuffer() const {
+        return _patchParamTexture;
+    }
+
+    /// Returns the patch arrays for varying index buffer data
+    PatchArrayVector const &GetVaryingPatchArrays() const {
+        return _varyingPatchArrays;
+    }
+
+    /// Returns the GL index buffer containing the varying control vertices
+    ID GetVaryingPatchIndexBuffer() const {
+        return _varyingIndexBuffer;
+    }
+
+    /// Returns the GL texture buffer containing the varying control vertices
+    ID GetVaryingPatchIndexTextureBuffer() const {
+        return _varyingIndexTexture;
+    }
+
+    /// Returns the number of face-varying channel buffers
+    int GetNumFVarChannels() const { return (int)_fvarPatchArrays.size(); }
+
+    /// Returns the patch arrays for face-varying index buffer data
+    PatchArrayVector const &GetFVarPatchArrays(int fvarChannel = 0) const {
+        return _fvarPatchArrays[fvarChannel];
+    }
+
+    /// Returns the GL index buffer containing face-varying control vertices
+    ID GetFVarPatchIndexBuffer(int fvarChannel = 0) const {
+        return _fvarIndexBuffers[fvarChannel];
+    }
+
+    /// Returns the GL texture buffer containing face-varying control vertices
+    ID GetFVarPatchIndexTextureBuffer(int fvarChannel = 0) const {
+        return _fvarIndexTextures[fvarChannel];
+    }
+
+    /// Returns the GL index buffer containing face-varying patch params
+    ID GetFVarPatchParamBuffer(int fvarChannel = 0) const {
+        return _fvarParamBuffers[fvarChannel];
+    }
+
+    /// Returns the GL texture buffer containing face-varying patch params
+    ID GetFVarPatchParamTextureBuffer(int fvarChannel = 0) const {
+        return _fvarParamTextures[fvarChannel];
+    }
+
+protected:
+    GLPatchTable();
+
+    // allocate buffers from patchTable
+    bool allocate(Far::PatchTable const *farPatchTable);
+
+    PatchArrayVector _patchArrays;
+
+    ID _patchIndexBuffer;
+    ID _patchParamBuffer;
+
+    ID _patchIndexTexture;
+    ID _patchParamTexture;
+
+    PatchArrayVector _varyingPatchArrays;
+    ID _varyingIndexBuffer;
+    ID _varyingIndexTexture;
+
+    std::vector<PatchArrayVector> _fvarPatchArrays;
+    std::vector<ID> _fvarIndexBuffers;
+    std::vector<ID> _fvarIndexTextures;
+
+    std::vector<ID> _fvarParamBuffers;
+    std::vector<ID> _fvarParamTextures;
+};
+
+
+}  // end namespace Osd
+
+}  // end namespace OPENSUBDIV_VERSION
+using namespace OPENSUBDIV_VERSION;
+
+}  // end namespace OpenSubdiv
+
+#endif  // OPENSUBDIV3_OSD_GL_PATCH_TABLE_H