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 "WebGLSharedObject.h" 30 31#include "WebGLShader.h" 32 33#include <wtf/PassRefPtr.h> 34#include <wtf/RefCounted.h> 35#include <wtf/Vector.h> 36 37namespace WebCore { 38 39class WebGLProgram : public WebGLSharedObject { 40public: 41 virtual ~WebGLProgram(); 42 43 static PassRefPtr<WebGLProgram> create(WebGLRenderingContext*); 44 45 unsigned numActiveAttribLocations(); 46 GC3Dint getActiveAttribLocation(GC3Duint index); 47 48 bool isUsingVertexAttrib0(); 49 50 bool getLinkStatus(); 51 void setLinkStatus(bool); 52 53 unsigned getLinkCount() const { return m_linkCount; } 54 55 // This is to be called everytime after the program is successfully linked. 56 // We don't deal with integer overflow here, assuming in reality a program 57 // will never be linked so many times. 58 // Also, we invalidate the cached program info. 59 void increaseLinkCount(); 60 61 WebGLShader* getAttachedShader(GC3Denum); 62 bool attachShader(WebGLShader*); 63 bool detachShader(WebGLShader*); 64 65protected: 66 WebGLProgram(WebGLRenderingContext*); 67 68 virtual void deleteObjectImpl(GraphicsContext3D*, Platform3DObject); 69 70private: 71 virtual bool isProgram() const { return true; } 72 73 void cacheActiveAttribLocations(GraphicsContext3D*); 74 void cacheInfoIfNeeded(); 75 76 Vector<GC3Dint> m_activeAttribLocations; 77 78 GC3Dint m_linkStatus; 79 80 // This is used to track whether a WebGLUniformLocation belongs to this 81 // program or not. 82 unsigned m_linkCount; 83 84 RefPtr<WebGLShader> m_vertexShader; 85 RefPtr<WebGLShader> m_fragmentShader; 86 87 bool m_infoValid; 88}; 89 90} // namespace WebCore 91 92#endif // WebGLProgram_h 93