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#include "config.h" 28 29#include "core/html/canvas/WebGLContextAttributes.h" 30 31#include "core/frame/Settings.h" 32 33namespace blink { 34 35DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(WebGLContextAttributes); 36 37PassRefPtrWillBeRawPtr<WebGLContextAttributes> WebGLContextAttributes::create() 38{ 39 return adoptRefWillBeNoop(new WebGLContextAttributes()); 40} 41 42WebGLContextAttributes::WebGLContextAttributes() 43 : CanvasContextAttributes() 44 , m_alpha(true) 45 , m_depth(true) 46 , m_stencil(false) 47 , m_antialias(true) 48 , m_premultipliedAlpha(true) 49 , m_preserveDrawingBuffer(false) 50 , m_failIfMajorPerformanceCaveat(false) 51{ 52} 53 54WebGLContextAttributes::WebGLContextAttributes(const WebGLContextAttributes& attrs) 55 : CanvasContextAttributes() 56 , m_alpha(attrs.m_alpha) 57 , m_depth(attrs.m_depth) 58 , m_stencil(attrs.m_stencil) 59 , m_antialias(attrs.m_antialias) 60 , m_premultipliedAlpha(attrs.m_premultipliedAlpha) 61 , m_preserveDrawingBuffer(attrs.m_preserveDrawingBuffer) 62 , m_failIfMajorPerformanceCaveat(attrs.m_failIfMajorPerformanceCaveat) 63{ 64} 65 66PassRefPtrWillBeRawPtr<WebGLContextAttributes> WebGLContextAttributes::clone() const 67{ 68 return adoptRefWillBeNoop(new WebGLContextAttributes(*this)); 69} 70 71bool WebGLContextAttributes::alpha() const 72{ 73 return m_alpha; 74} 75 76void WebGLContextAttributes::setAlpha(bool alpha) 77{ 78 m_alpha = alpha; 79} 80 81bool WebGLContextAttributes::depth() const 82{ 83 return m_depth; 84} 85 86void WebGLContextAttributes::setDepth(bool depth) 87{ 88 m_depth = depth; 89} 90 91bool WebGLContextAttributes::stencil() const 92{ 93 return m_stencil; 94} 95 96void WebGLContextAttributes::setStencil(bool stencil) 97{ 98 m_stencil = stencil; 99} 100 101bool WebGLContextAttributes::antialias() const 102{ 103 return m_antialias; 104} 105 106void WebGLContextAttributes::setAntialias(bool antialias) 107{ 108 m_antialias = antialias; 109} 110 111bool WebGLContextAttributes::premultipliedAlpha() const 112{ 113 return m_premultipliedAlpha; 114} 115 116void WebGLContextAttributes::setPremultipliedAlpha(bool premultipliedAlpha) 117{ 118 m_premultipliedAlpha = premultipliedAlpha; 119} 120 121bool WebGLContextAttributes::preserveDrawingBuffer() const 122{ 123 return m_preserveDrawingBuffer; 124} 125 126void WebGLContextAttributes::setPreserveDrawingBuffer(bool preserveDrawingBuffer) 127{ 128 m_preserveDrawingBuffer = preserveDrawingBuffer; 129} 130 131bool WebGLContextAttributes::failIfMajorPerformanceCaveat() const 132{ 133 return m_failIfMajorPerformanceCaveat; 134} 135 136void WebGLContextAttributes::setFailIfMajorPerformanceCaveat(bool failIfMajorPerformanceCaveat) 137{ 138 m_failIfMajorPerformanceCaveat = failIfMajorPerformanceCaveat; 139} 140 141blink::WebGraphicsContext3D::Attributes WebGLContextAttributes::attributes( 142 const blink::WebString& topDocumentURL, Settings* settings, unsigned webGLVersion) const 143{ 144 blink::WebGraphicsContext3D::Attributes attrs; 145 146 attrs.alpha = m_alpha; 147 attrs.depth = m_depth; 148 attrs.stencil = m_stencil; 149 attrs.antialias = m_antialias; 150 if (m_antialias) { 151 if (settings && !settings->openGLMultisamplingEnabled()) 152 attrs.antialias = false; 153 } 154 attrs.premultipliedAlpha = m_premultipliedAlpha; 155 attrs.failIfMajorPerformanceCaveat = m_failIfMajorPerformanceCaveat; 156 157 attrs.noExtensions = true; 158 attrs.shareResources = false; 159 attrs.preferDiscreteGPU = true; 160 161 attrs.topDocumentURL = topDocumentURL; 162 163 attrs.webGL = true; 164 attrs.webGLVersion = webGLVersion; 165 166 return attrs; 167} 168 169} // namespace blink 170