1 /* 2 * Copyright (C) 2011 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef WebGLVertexArrayObjectOES_h 27 #define WebGLVertexArrayObjectOES_h 28 29 #include "bindings/v8/ScriptWrappable.h" 30 #include "core/html/canvas/WebGLBuffer.h" 31 #include "core/html/canvas/WebGLContextObject.h" 32 #include "wtf/PassRefPtr.h" 33 34 namespace WebCore { 35 36 class WebGLVertexArrayObjectOES FINAL : public WebGLContextObject, public ScriptWrappable { 37 public: 38 enum VaoType { 39 VaoTypeDefault, 40 VaoTypeUser, 41 }; 42 43 virtual ~WebGLVertexArrayObjectOES(); 44 45 static PassRefPtr<WebGLVertexArrayObjectOES> create(WebGLRenderingContextBase*, VaoType); 46 47 // Cached values for vertex attrib range checks 48 struct VertexAttribState { VertexAttribStateVertexAttribState49 VertexAttribState() 50 : enabled(false) 51 , bytesPerElement(0) 52 , size(4) 53 , type(GL_FLOAT) 54 , normalized(false) 55 , stride(16) 56 , originalStride(0) 57 , offset(0) 58 , divisor(0) 59 { 60 } 61 62 bool enabled; 63 RefPtr<WebGLBuffer> bufferBinding; 64 GLsizei bytesPerElement; 65 GLint size; 66 GLenum type; 67 bool normalized; 68 GLsizei stride; 69 GLsizei originalStride; 70 GLintptr offset; 71 GLuint divisor; 72 }; 73 isDefaultObject()74 bool isDefaultObject() const { return m_type == VaoTypeDefault; } 75 hasEverBeenBound()76 bool hasEverBeenBound() const { return object() && m_hasEverBeenBound; } setHasEverBeenBound()77 void setHasEverBeenBound() { m_hasEverBeenBound = true; } 78 boundElementArrayBuffer()79 PassRefPtr<WebGLBuffer> boundElementArrayBuffer() const { return m_boundElementArrayBuffer; } 80 void setElementArrayBuffer(PassRefPtr<WebGLBuffer>); 81 getVertexAttribState(int index)82 VertexAttribState& getVertexAttribState(int index) { return m_vertexAttribState[index]; } 83 void setVertexAttribState(GLuint, GLsizei, GLint, GLenum, GLboolean, GLsizei, GLintptr, PassRefPtr<WebGLBuffer>); 84 void unbindBuffer(PassRefPtr<WebGLBuffer>); 85 void setVertexAttribDivisor(GLuint index, GLuint divisor); 86 87 private: 88 WebGLVertexArrayObjectOES(WebGLRenderingContextBase*, VaoType); 89 90 virtual void deleteObjectImpl(blink::WebGraphicsContext3D*, Platform3DObject) OVERRIDE; 91 92 VaoType m_type; 93 bool m_hasEverBeenBound; 94 RefPtr<WebGLBuffer> m_boundElementArrayBuffer; 95 Vector<VertexAttribState> m_vertexAttribState; 96 }; 97 98 } // namespace WebCore 99 100 #endif // WebGLVertexArrayObjectOES_h 101