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/WebGLRenderingContext.h" 31 #include "core/platform/graphics/Extensions3D.h" 32 33 namespace WebCore { 34 35 WebGLCompressedTextureS3TC::WebGLCompressedTextureS3TC(WebGLRenderingContext* context) 36 : WebGLExtension(context) 37 { 38 ScriptWrappable::init(this); 39 context->addCompressedTextureFormat(Extensions3D::COMPRESSED_RGB_S3TC_DXT1_EXT); 40 context->addCompressedTextureFormat(Extensions3D::COMPRESSED_RGBA_S3TC_DXT1_EXT); 41 context->addCompressedTextureFormat(Extensions3D::COMPRESSED_RGBA_S3TC_DXT3_EXT); 42 context->addCompressedTextureFormat(Extensions3D::COMPRESSED_RGBA_S3TC_DXT5_EXT); 43 } 44 45 WebGLCompressedTextureS3TC::~WebGLCompressedTextureS3TC() 46 { 47 } 48 49 WebGLExtension::ExtensionName WebGLCompressedTextureS3TC::getName() const 50 { 51 return WebGLCompressedTextureS3TCName; 52 } 53 54 PassRefPtr<WebGLCompressedTextureS3TC> WebGLCompressedTextureS3TC::create(WebGLRenderingContext* context) 55 { 56 return adoptRef(new WebGLCompressedTextureS3TC(context)); 57 } 58 59 bool WebGLCompressedTextureS3TC::supported(WebGLRenderingContext* context) 60 { 61 Extensions3D* extensions = context->graphicsContext3D()->getExtensions(); 62 return extensions->supports("GL_EXT_texture_compression_s3tc") 63 || (extensions->supports("GL_EXT_texture_compression_dxt1") 64 && extensions->supports("GL_CHROMIUM_texture_compression_dxt3") 65 && extensions->supports("GL_CHROMIUM_texture_compression_dxt5")); 66 } 67 68 const char* WebGLCompressedTextureS3TC::getExtensionName() 69 { 70 return "WEBGL_compressed_texture_s3tc"; 71 } 72 73 } // namespace WebCore 74