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 "CanvasContextAttributes.h" 31 #include "GraphicsContext3D.h" 32 #include <wtf/PassRefPtr.h> 33 34 namespace WebCore { 35 36 class WebGLContextAttributes : public CanvasContextAttributes { 37 public: 38 virtual ~WebGLContextAttributes(); 39 40 // Create a new attributes object 41 static PassRefPtr<WebGLContextAttributes> create(); 42 43 // Create a new attributes object initialized with preexisting attributes 44 static PassRefPtr<WebGLContextAttributes> create(GraphicsContext3D::Attributes attributes); 45 46 // Whether or not the drawing buffer has an alpha channel; default=true 47 bool alpha() const; 48 void setAlpha(bool alpha); 49 50 // Whether or not the drawing buffer has a depth buffer; default=true 51 bool depth() const; 52 void setDepth(bool depth); 53 54 // Whether or not the drawing buffer has a stencil buffer; default=true 55 bool stencil() const; 56 void setStencil(bool stencil); 57 58 // Whether or not the drawing buffer is antialiased; default=true 59 bool antialias() const; 60 void setAntialias(bool antialias); 61 62 // Whether or not to treat the values in the drawing buffer as 63 // though their alpha channel has already been multiplied into the 64 // color channels; default=true 65 bool premultipliedAlpha() const; 66 void setPremultipliedAlpha(bool premultipliedAlpha); 67 68 // Whether or not to preserve the drawing buffer after presentation to the 69 // screen; default=false 70 bool preserveDrawingBuffer() const; 71 void setPreserveDrawingBuffer(bool); 72 73 // Fetches a copy of the attributes stored in this object in a 74 // form that can be used to initialize a GraphicsContext3D. 75 GraphicsContext3D::Attributes attributes() const; 76 77 protected: 78 WebGLContextAttributes(); 79 WebGLContextAttributes(GraphicsContext3D::Attributes attributes); 80 81 private: 82 GraphicsContext3D::Attributes m_attrs; 83 }; 84 85 } // namespace WebCore 86 87 #endif // WebGLContextAttributes_h 88
