2 * Copyright (C) 2011 Andrew Wason (rectalogic@rectalogic.com)
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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.
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.
28 #if ENABLE(ACCELERATED_2D_CANVAS) || ENABLE(WEBGL)
30 #include "DrawingBuffer.h"
34 DrawingBuffer::DrawingBuffer(GraphicsContext3D* context,
36 bool multisampleExtensionSupported,
37 bool packedDepthStencilExtensionSupported)
40 , m_multisampleExtensionSupported(multisampleExtensionSupported)
41 , m_packedDepthStencilExtensionSupported(packedDepthStencilExtensionSupported)
42 , m_fbo(context->createFramebuffer())
44 , m_depthStencilBuffer(0)
48 , m_multisampleColorBuffer(0)
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);
65 createSecondaryBuffers();
69 DrawingBuffer::~DrawingBuffer()
74 #if USE(ACCELERATED_COMPOSITING)
75 PlatformLayer* DrawingBuffer::platformLayer()
81 Platform3DObject DrawingBuffer::platformColorBuffer() const