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      1 /*
      2  * Copyright (C) 2013 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/WebGLCompressedTextureATC.h"
     29 
     30 #include "core/platform/graphics/Extensions3D.h"
     31 
     32 namespace WebCore {
     33 
     34 WebGLCompressedTextureATC::WebGLCompressedTextureATC(WebGLRenderingContext* context)
     35     : WebGLExtension(context)
     36 {
     37     ScriptWrappable::init(this);
     38     context->addCompressedTextureFormat(Extensions3D::COMPRESSED_ATC_RGB_AMD);
     39     context->addCompressedTextureFormat(Extensions3D::COMPRESSED_ATC_RGBA_EXPLICIT_ALPHA_AMD);
     40     context->addCompressedTextureFormat(Extensions3D::COMPRESSED_ATC_RGBA_INTERPOLATED_ALPHA_AMD);
     41 }
     42 
     43 WebGLCompressedTextureATC::~WebGLCompressedTextureATC()
     44 {
     45 }
     46 
     47 WebGLExtension::ExtensionName WebGLCompressedTextureATC::getName() const
     48 {
     49     return WebGLCompressedTextureATCName;
     50 }
     51 
     52 PassRefPtr<WebGLCompressedTextureATC> WebGLCompressedTextureATC::create(WebGLRenderingContext* context)
     53 {
     54     return adoptRef(new WebGLCompressedTextureATC(context));
     55 }
     56 
     57 bool WebGLCompressedTextureATC::supported(WebGLRenderingContext* context)
     58 {
     59     Extensions3D* extensions = context->graphicsContext3D()->getExtensions();
     60     return extensions->supports("GL_AMD_compressed_ATC_texture");
     61 }
     62 
     63 const char* WebGLCompressedTextureATC::getExtensionName()
     64 {
     65     return "WEBGL_compressed_texture_atc";
     66 }
     67 
     68 } // namespace WebCore
     69