| /* |
| * 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 "third_party/blink/renderer/modules/webgl/webgl_depth_texture.h" |
| |
| namespace blink { |
| |
| WebGLDepthTexture::WebGLDepthTexture(WebGLRenderingContextBase* context) |
| : WebGLExtension(context) { |
| context->ExtensionsUtil()->EnsureExtensionEnabled( |
| "GL_CHROMIUM_depth_texture"); |
| } |
| |
| WebGLExtensionName WebGLDepthTexture::GetName() const { |
| return kWebGLDepthTextureName; |
| } |
| |
| WebGLDepthTexture* WebGLDepthTexture::Create( |
| WebGLRenderingContextBase* context) { |
| return MakeGarbageCollected<WebGLDepthTexture>(context); |
| } |
| |
| bool WebGLDepthTexture::Supported(WebGLRenderingContextBase* context) { |
| Extensions3DUtil* extensions_util = 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 (!extensions_util->SupportsExtension("GL_OES_packed_depth_stencil")) |
| return false; |
| return extensions_util->SupportsExtension("GL_CHROMIUM_depth_texture"); |
| } |
| |
| const char* WebGLDepthTexture::ExtensionName() { |
| return "WEBGL_depth_texture"; |
| } |
| |
| } // namespace blink |