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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef IN_GL_CONTEXT_PROVIDER_H
# error GLContextProviderImpl.h must only be included from GLContextProvider.h
#endif
#ifndef GL_CONTEXT_PROVIDER_NAME
# error GL_CONTEXT_PROVIDER_NAME not defined
#endif
#if defined(MOZ_WIDGET_ANDROID)
# include "GLTypes.h" // for EGLSurface and EGLConfig
#endif // defined(MOZ_WIDGET_ANDROID)
class GL_CONTEXT_PROVIDER_NAME {
public:
/**
* Create a context that renders to the surface of the widget represented by
* the compositor widget that is passed in. The context is always created
* with an RGB pixel format, with no alpha, depth or stencil.
* If any of those features are needed, either use a framebuffer, or
* use CreateOffscreen.
*
* This context will attempt to share resources with all other window
* contexts. As such, it's critical that resources allocated that are not
* needed by other contexts be deleted before the context is destroyed.
*
* The GetSharedContext() method will return non-null if sharing
* was successful.
*
* Note: a context created for a widget /must not/ hold a strong
* reference to the widget; otherwise a cycle can be created through
* a GL layer manager.
*
* @param aCompositorWidget Widget whose surface to create a context for
* @param aForceAccelerated true if only accelerated contexts are allowed
*
* @return Context to use for the window
*/
static already_AddRefed<GLContext> CreateForCompositorWidget(
mozilla::widget::CompositorWidget* aCompositorWidget, bool aWebRender,
bool aForceAccelerated);
/// Just create a context. We'll add offscreen stuff ourselves.
static already_AddRefed<GLContext> CreateHeadless(
const GLContextCreateDesc&, nsACString* const out_failureId);
/**
* Get a pointer to the global context, creating it if it doesn't exist.
*/
static GLContext* GetGlobalContext();
/**
* Free any resources held by this Context Provider.
*/
static void Shutdown();
};
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