Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 59 insertions, 0 deletions

diff --git a/gfx/gl/GLContextProviderImpl.h b/gfx/gl/GLContextProviderImpl.h
new file mode 100644
index 0000000000..e7aaeeaa62
--- /dev/null
+++ b/gfx/gl/GLContextProviderImpl.h
@@ -0,0 +1,59 @@
+/* -*- 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();
+};