/* * Copyright (C) 2011 Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef PlatformColor_h #define PlatformColor_h #include "Extensions3D.h" #include "GraphicsContext3D.h" #include "SkTypes.h" namespace WebCore { class PlatformColor { public: static GraphicsContext3D::SourceDataFormat format() { return SK_B32_SHIFT ? GraphicsContext3D::SourceFormatRGBA8 : GraphicsContext3D::SourceFormatBGRA8; } // Returns the most efficient texture format for this platform. static GC3Denum bestTextureFormat(GraphicsContext3D* context) { GC3Denum textureFormat = GraphicsContext3D::RGBA; switch (format()) { case GraphicsContext3D::SourceFormatRGBA8: break; case GraphicsContext3D::SourceFormatBGRA8: if (context->getExtensions()->supports("GL_EXT_texture_format_BGRA8888")) textureFormat = Extensions3D::BGRA_EXT; break; default: ASSERT_NOT_REACHED(); break; } return textureFormat; } // Return true if the given texture format has the same component order // as the color on this platform. static bool sameComponentOrder(GC3Denum textureFormat) { switch (format()) { case GraphicsContext3D::SourceFormatRGBA8: return textureFormat == GraphicsContext3D::RGBA; case GraphicsContext3D::SourceFormatBGRA8: return textureFormat == Extensions3D::BGRA_EXT; default: ASSERT_NOT_REACHED(); return false; } } }; } // namespace WebCore #endif