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72 lines
2.7 KiB
C++
72 lines
2.7 KiB
C++
/*
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* Copyright (C) 2012 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "core/html/canvas/WebGLDepthTexture.h"
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namespace blink {
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WebGLDepthTexture::WebGLDepthTexture(WebGLRenderingContextBase* context)
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: WebGLExtension(context)
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{
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ScriptWrappable::init(this);
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context->extensionsUtil()->ensureExtensionEnabled("GL_CHROMIUM_depth_texture");
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}
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WebGLDepthTexture::~WebGLDepthTexture()
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{
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}
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WebGLExtensionName WebGLDepthTexture::name() const
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{
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return WebGLDepthTextureName;
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}
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PassRefPtrWillBeRawPtr<WebGLDepthTexture> WebGLDepthTexture::create(WebGLRenderingContextBase* context)
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{
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return adoptRefWillBeNoop(new WebGLDepthTexture(context));
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}
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bool WebGLDepthTexture::supported(WebGLRenderingContextBase* context)
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{
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Extensions3DUtil* extensionsUtil = context->extensionsUtil();
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// Emulating the UNSIGNED_INT_24_8_WEBGL texture internal format in terms
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// of two separate texture objects is too difficult, so disable depth
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// textures unless a packed depth/stencil format is available.
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if (!extensionsUtil->supportsExtension("GL_OES_packed_depth_stencil"))
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return false;
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return extensionsUtil->supportsExtension("GL_CHROMIUM_depth_texture")
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|| extensionsUtil->supportsExtension("GL_OES_depth_texture")
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|| extensionsUtil->supportsExtension("GL_ARB_depth_texture");
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}
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const char* WebGLDepthTexture::extensionName()
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{
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return "WEBGL_depth_texture";
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}
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} // namespace blink
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