1/* 2 * Copyright (c) 2010, 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 are 6 * met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above 10 * copyright notice, this list of conditions and the following disclaimer 11 * in the documentation and/or other materials provided with the 12 * distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 15 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 16 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 17 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 18 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 20 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#ifndef WebGLContextAttributes_h 28#define WebGLContextAttributes_h 29 30#include "bindings/v8/ScriptWrappable.h" 31#include "core/html/canvas/CanvasContextAttributes.h" 32#include "core/platform/graphics/GraphicsContext3D.h" 33#include "wtf/PassRefPtr.h" 34 35namespace WebCore { 36 37class WebGLContextAttributes : public CanvasContextAttributes, public ScriptWrappable { 38public: 39 virtual ~WebGLContextAttributes(); 40 41 // Create a new attributes object 42 static PassRefPtr<WebGLContextAttributes> create(); 43 44 // Create a new attributes object initialized with preexisting attributes 45 static PassRefPtr<WebGLContextAttributes> create(GraphicsContext3D::Attributes attributes); 46 47 // Whether or not the drawing buffer has an alpha channel; default=true 48 bool alpha() const; 49 void setAlpha(bool alpha); 50 51 // Whether or not the drawing buffer has a depth buffer; default=true 52 bool depth() const; 53 void setDepth(bool depth); 54 55 // Whether or not the drawing buffer has a stencil buffer; default=true 56 bool stencil() const; 57 void setStencil(bool stencil); 58 59 // Whether or not the drawing buffer is antialiased; default=true 60 bool antialias() const; 61 void setAntialias(bool antialias); 62 63 // Whether or not to treat the values in the drawing buffer as 64 // though their alpha channel has already been multiplied into the 65 // color channels; default=true 66 bool premultipliedAlpha() const; 67 void setPremultipliedAlpha(bool premultipliedAlpha); 68 69 // Whether or not to preserve the drawing buffer after presentation to the 70 // screen; default=false 71 bool preserveDrawingBuffer() const; 72 void setPreserveDrawingBuffer(bool); 73 74 // Fetches a copy of the attributes stored in this object in a 75 // form that can be used to initialize a GraphicsContext3D. 76 GraphicsContext3D::Attributes attributes() const; 77 78protected: 79 WebGLContextAttributes(); 80 WebGLContextAttributes(GraphicsContext3D::Attributes attributes); 81 82private: 83 GraphicsContext3D::Attributes m_attrs; 84}; 85 86} // namespace WebCore 87 88#endif // WebGLContextAttributes_h 89