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/core/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 blink { 36 37 class WebGLProgram FINAL : public WebGLSharedObject, public ScriptWrappable { 38 DEFINE_WRAPPERTYPEINFO(); 39 public: 40 virtual ~WebGLProgram(); 41 42 static PassRefPtrWillBeRawPtr<WebGLProgram> create(WebGLRenderingContextBase*); 43 44 unsigned numActiveAttribLocations(); 45 GLint getActiveAttribLocation(GLuint index); 46 47 bool isUsingVertexAttrib0(); 48 49 bool linkStatus(); 50 linkCount()51 unsigned linkCount() const { return m_linkCount; } 52 53 // This is to be called everytime after the program is successfully linked. 54 // We don't deal with integer overflow here, assuming in reality a program 55 // will never be linked so many times. 56 // Also, we invalidate the cached program info. 57 void increaseLinkCount(); 58 59 WebGLShader* getAttachedShader(GLenum); 60 bool attachShader(WebGLShader*); 61 bool detachShader(WebGLShader*); 62 63 virtual void trace(Visitor*) OVERRIDE; 64 65 protected: 66 explicit WebGLProgram(WebGLRenderingContextBase*); 67 68 virtual void deleteObjectImpl(blink::WebGraphicsContext3D*, Platform3DObject) OVERRIDE; 69 70 private: isProgram()71 virtual bool isProgram() const OVERRIDE { return true; } 72 73 void cacheActiveAttribLocations(blink::WebGraphicsContext3D*); 74 void cacheInfoIfNeeded(); 75 76 Vector<GLint> m_activeAttribLocations; 77 78 GLint 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 RefPtrWillBeMember<WebGLShader> m_vertexShader; 85 RefPtrWillBeMember<WebGLShader> m_fragmentShader; 86 87 bool m_infoValid; 88 }; 89 90 } // namespace blink 91 92 #endif // WebGLProgram_h 93