1/* 2 * Copyright (c) 2010, Google Inc. All rights reserved. 3 * Copyright (c) 2012, Collabora Ltd. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 9 * * Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * * Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following disclaimer 13 * in the documentation and/or other materials provided with the 14 * distribution. 15 * * Neither the name of Google Inc. nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include "config.h" 33 34#if ENABLE(ACCELERATED_2D_CANVAS) || USE(3D_GRAPHICS) 35 36#include "DrawingBuffer.h" 37 38#include "Extensions3D.h" 39 40namespace WebCore { 41 42DrawingBuffer::DrawingBuffer(GraphicsContext3D* context, 43 const IntSize& size, 44 bool multisampleExtensionSupported, 45 bool packedDepthStencilExtensionSupported, 46 PreserveDrawingBuffer preserveDrawingBuffer, 47 AlphaRequirement alpha) 48 : m_preserveDrawingBuffer(preserveDrawingBuffer) 49 , m_alpha(alpha) 50 , m_frontColorBuffer(0) 51 , m_separateFrontTexture(false) 52{ 53} 54 55DrawingBuffer::~DrawingBuffer() 56{ 57} 58 59#if USE(ACCELERATED_COMPOSITING) 60void DrawingBuffer::prepareBackBuffer() 61{ 62} 63 64bool DrawingBuffer::requiresCopyFromBackToFrontBuffer() const 65{ 66 return false; 67} 68 69unsigned DrawingBuffer::frontColorBuffer() const 70{ 71 return colorBuffer(); 72} 73 74void DrawingBuffer::paintCompositedResultsToCanvas(ImageBuffer*) 75{ 76} 77 78void DrawingBuffer::clearPlatformLayer() 79{ 80} 81#endif 82 83} 84 85#endif 86