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/core/v8/ScriptWrappable.h" 30 #include "core/html/canvas/WebGLBuffer.h" 31 #include "core/html/canvas/WebGLContextObject.h" 32 #include "platform/heap/Handle.h" 33 #include "wtf/PassRefPtr.h" 34 35 namespace blink { 36 37 class WebGLVertexArrayObjectOES FINAL : public WebGLContextObject, public ScriptWrappable { 38 DEFINE_WRAPPERTYPEINFO(); 39 public: 40 enum VaoType { 41 VaoTypeDefault, 42 VaoTypeUser, 43 }; 44 45 virtual ~WebGLVertexArrayObjectOES(); 46 47 static PassRefPtrWillBeRawPtr<WebGLVertexArrayObjectOES> create(WebGLRenderingContextBase*, VaoType); 48 49 // Cached values for vertex attrib range checks 50 class VertexAttribState FINAL { 51 ALLOW_ONLY_INLINE_ALLOCATION(); 52 public: VertexAttribState()53 VertexAttribState() 54 : enabled(false) 55 , bytesPerElement(0) 56 , size(4) 57 , type(GL_FLOAT) 58 , normalized(false) 59 , stride(16) 60 , originalStride(0) 61 , offset(0) 62 , divisor(0) 63 { 64 } 65 66 void trace(Visitor*); 67 68 bool enabled; 69 RefPtrWillBeMember<WebGLBuffer> bufferBinding; 70 GLsizei bytesPerElement; 71 GLint size; 72 GLenum type; 73 bool normalized; 74 GLsizei stride; 75 GLsizei originalStride; 76 GLintptr offset; 77 GLuint divisor; 78 }; 79 isDefaultObject()80 bool isDefaultObject() const { return m_type == VaoTypeDefault; } 81 hasEverBeenBound()82 bool hasEverBeenBound() const { return object() && m_hasEverBeenBound; } setHasEverBeenBound()83 void setHasEverBeenBound() { m_hasEverBeenBound = true; } 84 boundElementArrayBuffer()85 PassRefPtrWillBeRawPtr<WebGLBuffer> boundElementArrayBuffer() const { return m_boundElementArrayBuffer; } 86 void setElementArrayBuffer(PassRefPtrWillBeRawPtr<WebGLBuffer>); 87 getVertexAttribState(int index)88 VertexAttribState& getVertexAttribState(int index) { return m_vertexAttribState[index]; } 89 void setVertexAttribState(GLuint, GLsizei, GLint, GLenum, GLboolean, GLsizei, GLintptr, PassRefPtrWillBeRawPtr<WebGLBuffer>); 90 void unbindBuffer(PassRefPtrWillBeRawPtr<WebGLBuffer>); 91 void setVertexAttribDivisor(GLuint index, GLuint divisor); 92 93 virtual void trace(Visitor*) OVERRIDE; 94 95 private: 96 WebGLVertexArrayObjectOES(WebGLRenderingContextBase*, VaoType); 97 98 void dispatchDetached(blink::WebGraphicsContext3D*); 99 virtual void deleteObjectImpl(blink::WebGraphicsContext3D*, Platform3DObject) OVERRIDE; 100 101 VaoType m_type; 102 bool m_hasEverBeenBound; 103 #if ENABLE(OILPAN) 104 bool m_destructionInProgress; 105 #endif 106 RefPtrWillBeMember<WebGLBuffer> m_boundElementArrayBuffer; 107 WillBeHeapVector<VertexAttribState> m_vertexAttribState; 108 }; 109 110 } // namespace blink 111 112 namespace WTF { 113 114 template<> 115 struct VectorTraits<blink::WebGLVertexArrayObjectOES::VertexAttribState> : SimpleClassVectorTraits<blink::WebGLVertexArrayObjectOES::VertexAttribState> { 116 // Specialization needed as the VertexAttribState's struct fields 117 // aren't handled as desired by the IsPod() trait. 118 #if ENABLE(OILPAN) 119 static const bool needsDestruction = false; 120 #endif 121 // Must use the constructor. 122 static const bool canInitializeWithMemset = false; 123 static const bool canCopyWithMemcpy = true; 124 }; 125 126 } // namespace WTF 127 128 #endif // WebGLVertexArrayObjectOES_h 129