1 /* 2 * Copyright (C) 2011 Andrew Wason (rectalogic (at) rectalogic.com) 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 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 #include "config.h" 27 28 #if ENABLE(ACCELERATED_2D_CANVAS) || ENABLE(WEBGL) 29 30 #include "DrawingBuffer.h" 31 32 namespace WebCore { 33 34 DrawingBuffer::DrawingBuffer(GraphicsContext3D* context, 35 const IntSize& size, 36 bool multisampleExtensionSupported, 37 bool packedDepthStencilExtensionSupported) 38 : m_context(context) 39 , m_size(-1, -1) 40 , m_multisampleExtensionSupported(multisampleExtensionSupported) 41 , m_packedDepthStencilExtensionSupported(packedDepthStencilExtensionSupported) 42 , m_fbo(context->createFramebuffer()) 43 , m_colorBuffer(0) 44 , m_depthStencilBuffer(0) 45 , m_depthBuffer(0) 46 , m_stencilBuffer(0) 47 , m_multisampleFBO(0) 48 , m_multisampleColorBuffer(0) 49 { 50 ASSERT(m_fbo); 51 if (!m_fbo) { 52 clear(); 53 return; 54 } 55 56 // create a texture to render into 57 m_colorBuffer = context->createTexture(); 58 context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_colorBuffer); 59 context->texParameterf(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR); 60 context->texParameterf(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR); 61 context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE); 62 context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE); 63 context->bindTexture(GraphicsContext3D::TEXTURE_2D, 0); 64 65 // Create the FBO 66 m_fbo = context->createFramebuffer(); 67 ASSERT(m_fbo); 68 if (!m_fbo) { 69 clear(); 70 return; 71 } 72 73 createSecondaryBuffers(); 74 reset(size); 75 } 76 77 DrawingBuffer::~DrawingBuffer() 78 { 79 clear(); 80 } 81 82 void DrawingBuffer::didReset() 83 { 84 } 85 86 #if USE(ACCELERATED_COMPOSITING) 87 PlatformLayer* DrawingBuffer::platformLayer() 88 { 89 return 0; 90 } 91 #endif 92 93 Platform3DObject DrawingBuffer::platformColorBuffer() const 94 { 95 return m_colorBuffer; 96 } 97 98 } 99 100 #endif 101
