зеркало из https://github.com/mozilla/gecko-dev.git
52 строки
1.9 KiB
C++
52 строки
1.9 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebGLExtensions.h"
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#include "GLContext.h"
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#include "mozilla/dom/WebGLRenderingContextBinding.h"
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#include "WebGLContext.h"
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namespace mozilla {
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WebGLExtensionDepthTexture::WebGLExtensionDepthTexture(
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WebGLContext* const webgl)
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: WebGLExtensionBase(webgl) {
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auto& fua = webgl->mFormatUsage;
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const auto fnAdd = [&fua](webgl::EffectiveFormat effFormat,
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GLenum unpackFormat, GLenum unpackType) {
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auto usage = fua->EditUsage(effFormat);
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MOZ_ASSERT(usage->isFilterable);
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MOZ_ASSERT(usage->IsRenderable());
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const webgl::PackingInfo pi = {unpackFormat, unpackType};
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const webgl::DriverUnpackInfo dui = {unpackFormat, unpackFormat,
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unpackType};
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fua->AddTexUnpack(usage, pi, dui);
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fua->AllowUnsizedTexFormat(pi, usage);
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};
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fnAdd(webgl::EffectiveFormat::DEPTH_COMPONENT16, LOCAL_GL_DEPTH_COMPONENT,
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LOCAL_GL_UNSIGNED_SHORT);
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fnAdd(webgl::EffectiveFormat::DEPTH_COMPONENT24, LOCAL_GL_DEPTH_COMPONENT,
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LOCAL_GL_UNSIGNED_INT);
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fnAdd(webgl::EffectiveFormat::DEPTH24_STENCIL8, LOCAL_GL_DEPTH_STENCIL,
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LOCAL_GL_UNSIGNED_INT_24_8);
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}
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bool WebGLExtensionDepthTexture::IsSupported(const WebGLContext* const webgl) {
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if (webgl->IsWebGL2()) return false;
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// WEBGL_depth_texture supports DEPTH_STENCIL textures
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const auto& gl = webgl->gl;
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if (!gl->IsSupported(gl::GLFeature::packed_depth_stencil)) return false;
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return gl->IsSupported(gl::GLFeature::depth_texture) ||
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gl->IsExtensionSupported(gl::GLContext::ANGLE_depth_texture);
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}
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} // namespace mozilla
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