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-rw-r--r--gfx/gl/GLContextProviderImpl.h59
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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 aHardwareWebRender, 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();
+};