зеркало из https://github.com/mozilla/gecko-dev.git
60 строки
2.2 KiB
C++
60 строки
2.2 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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#ifndef IN_GL_CONTEXT_PROVIDER_H
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# error GLContextProviderImpl.h must only be included from GLContextProvider.h
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#endif
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#ifndef GL_CONTEXT_PROVIDER_NAME
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# error GL_CONTEXT_PROVIDER_NAME not defined
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#endif
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#if defined(MOZ_WIDGET_ANDROID)
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# include "GLTypes.h" // for EGLSurface and EGLConfig
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#endif // defined(MOZ_WIDGET_ANDROID)
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class GL_CONTEXT_PROVIDER_NAME {
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public:
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/**
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* Create a context that renders to the surface of the widget represented by
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* the compositor widget that is passed in. The context is always created
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* with an RGB pixel format, with no alpha, depth or stencil.
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* If any of those features are needed, either use a framebuffer, or
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* use CreateOffscreen.
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*
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* This context will attempt to share resources with all other window
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* contexts. As such, it's critical that resources allocated that are not
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* needed by other contexts be deleted before the context is destroyed.
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*
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* The GetSharedContext() method will return non-null if sharing
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* was successful.
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*
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* Note: a context created for a widget /must not/ hold a strong
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* reference to the widget; otherwise a cycle can be created through
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* a GL layer manager.
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*
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* @param aCompositorWidget Widget whose surface to create a context for
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* @param aForceAccelerated true if only accelerated contexts are allowed
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*
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* @return Context to use for the window
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*/
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static already_AddRefed<GLContext> CreateForCompositorWidget(
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mozilla::widget::CompositorWidget* aCompositorWidget, bool aWebRender,
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bool aForceAccelerated);
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/// Just create a context. We'll add offscreen stuff ourselves.
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static already_AddRefed<GLContext> CreateHeadless(
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const GLContextCreateDesc&, nsACString* const out_failureId);
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/**
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* Get a pointer to the global context, creating it if it doesn't exist.
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*/
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static GLContext* GetGlobalContext();
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/**
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* Free any resources held by this Context Provider.
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*/
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static void Shutdown();
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};
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