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