1 /* 2 * Copyright (C) 2009 Apple 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 WebGLProgram_h 27 #define WebGLProgram_h 28 29 #include "bindings/v8/ScriptWrappable.h" 30 #include "core/html/canvas/WebGLSharedObject.h" 31 #include "core/html/canvas/WebGLShader.h" 32 #include "wtf/PassRefPtr.h" 33 #include "wtf/Vector.h" 34 35 namespace WebCore { 36 37 class WebGLProgram FINAL : public WebGLSharedObject, public ScriptWrappable { 38 public: 39 virtual ~WebGLProgram(); 40 41 static PassRefPtr<WebGLProgram> create(WebGLRenderingContextBase*); 42 43 unsigned numActiveAttribLocations(); 44 GLint getActiveAttribLocation(GLuint index); 45 46 bool isUsingVertexAttrib0(); 47 48 bool linkStatus(); 49 linkCount()50 unsigned linkCount() const { return m_linkCount; } 51 52 // This is to be called everytime after the program is successfully linked. 53 // We don't deal with integer overflow here, assuming in reality a program 54 // will never be linked so many times. 55 // Also, we invalidate the cached program info. 56 void increaseLinkCount(); 57 58 WebGLShader* getAttachedShader(GLenum); 59 bool attachShader(WebGLShader*); 60 bool detachShader(WebGLShader*); 61 62 protected: 63 WebGLProgram(WebGLRenderingContextBase*); 64 65 virtual void deleteObjectImpl(blink::WebGraphicsContext3D*, Platform3DObject) OVERRIDE; 66 67 private: isProgram()68 virtual bool isProgram() const OVERRIDE { return true; } 69 70 void cacheActiveAttribLocations(blink::WebGraphicsContext3D*); 71 void cacheInfoIfNeeded(); 72 73 Vector<GLint> m_activeAttribLocations; 74 75 GLint m_linkStatus; 76 77 // This is used to track whether a WebGLUniformLocation belongs to this 78 // program or not. 79 unsigned m_linkCount; 80 81 RefPtr<WebGLShader> m_vertexShader; 82 RefPtr<WebGLShader> m_fragmentShader; 83 84 bool m_infoValid; 85 }; 86 87 } // namespace WebCore 88 89 #endif // WebGLProgram_h 90