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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 "sky/engine/config.h" | |
27 | |
28 #include "sky/engine/core/html/canvas/WebGLCompressedTextureS3TC.h" | |
29 | |
30 #include "sky/engine/core/html/canvas/WebGLRenderingContextBase.h" | |
31 | |
32 namespace blink { | |
33 | |
34 WebGLCompressedTextureS3TC::WebGLCompressedTextureS3TC(WebGLRenderingContextBase
* context) | |
35 : WebGLExtension(context) | |
36 { | |
37 context->addCompressedTextureFormat(GL_COMPRESSED_RGB_S3TC_DXT1_EXT); | |
38 context->addCompressedTextureFormat(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT); | |
39 context->addCompressedTextureFormat(GL_COMPRESSED_RGBA_S3TC_DXT3_EXT); | |
40 context->addCompressedTextureFormat(GL_COMPRESSED_RGBA_S3TC_DXT5_EXT); | |
41 } | |
42 | |
43 WebGLCompressedTextureS3TC::~WebGLCompressedTextureS3TC() | |
44 { | |
45 } | |
46 | |
47 WebGLExtensionName WebGLCompressedTextureS3TC::name() const | |
48 { | |
49 return WebGLCompressedTextureS3TCName; | |
50 } | |
51 | |
52 PassRefPtr<WebGLCompressedTextureS3TC> WebGLCompressedTextureS3TC::create(WebGLR
enderingContextBase* context) | |
53 { | |
54 return adoptRef(new WebGLCompressedTextureS3TC(context)); | |
55 } | |
56 | |
57 bool WebGLCompressedTextureS3TC::supported(WebGLRenderingContextBase* context) | |
58 { | |
59 Extensions3DUtil* extensionsUtil = context->extensionsUtil(); | |
60 return extensionsUtil->supportsExtension("GL_EXT_texture_compression_s3tc") | |
61 || (extensionsUtil->supportsExtension("GL_EXT_texture_compression_dxt1") | |
62 && extensionsUtil->supportsExtension("GL_CHROMIUM_texture_compressio
n_dxt3") | |
63 && extensionsUtil->supportsExtension("GL_CHROMIUM_texture_compressio
n_dxt5")); | |
64 } | |
65 | |
66 const char* WebGLCompressedTextureS3TC::extensionName() | |
67 { | |
68 return "WEBGL_compressed_texture_s3tc"; | |
69 } | |
70 | |
71 } // namespace blink | |
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