1/* 2 * Copyright (C) 2011 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 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27 28#include "core/html/canvas/WebGLCompressedTextureS3TC.h" 29 30#include "core/html/canvas/WebGLRenderingContextBase.h" 31 32namespace WebCore { 33 34WebGLCompressedTextureS3TC::WebGLCompressedTextureS3TC(WebGLRenderingContextBase* context) 35 : WebGLExtension(context) 36{ 37 ScriptWrappable::init(this); 38 context->addCompressedTextureFormat(GL_COMPRESSED_RGB_S3TC_DXT1_EXT); 39 context->addCompressedTextureFormat(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT); 40 context->addCompressedTextureFormat(GL_COMPRESSED_RGBA_S3TC_DXT3_EXT); 41 context->addCompressedTextureFormat(GL_COMPRESSED_RGBA_S3TC_DXT5_EXT); 42} 43 44WebGLCompressedTextureS3TC::~WebGLCompressedTextureS3TC() 45{ 46} 47 48WebGLExtensionName WebGLCompressedTextureS3TC::name() const 49{ 50 return WebGLCompressedTextureS3TCName; 51} 52 53PassRefPtr<WebGLCompressedTextureS3TC> WebGLCompressedTextureS3TC::create(WebGLRenderingContextBase* context) 54{ 55 return adoptRef(new WebGLCompressedTextureS3TC(context)); 56} 57 58bool WebGLCompressedTextureS3TC::supported(WebGLRenderingContextBase* context) 59{ 60 Extensions3DUtil* extensionsUtil = context->extensionsUtil(); 61 return extensionsUtil->supportsExtension("GL_EXT_texture_compression_s3tc") 62 || (extensionsUtil->supportsExtension("GL_EXT_texture_compression_dxt1") 63 && extensionsUtil->supportsExtension("GL_CHROMIUM_texture_compression_dxt3") 64 && extensionsUtil->supportsExtension("GL_CHROMIUM_texture_compression_dxt5")); 65} 66 67const char* WebGLCompressedTextureS3TC::extensionName() 68{ 69 return "WEBGL_compressed_texture_s3tc"; 70} 71 72} // namespace WebCore 73