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