Issue #1829 - Revert "Issue #1751"

gfx/layers/opengl/GLManager.h

@@ -0,0 +1,44 @@
+/* -*- 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 MOZILLA_GFX_GLMANAGER_H
+#define MOZILLA_GFX_GLMANAGER_H
+
+#include "mozilla/gfx/Types.h"          // for SurfaceFormat
+#include "OGLShaderProgram.h"
+
+namespace mozilla {
+namespace gl {
+class GLContext;
+} // namespace gl
+
+namespace layers {
+
+class LayerManagerComposite;
+
+/**
+ * Minimal interface to allow widgets to draw using OpenGL. Abstracts
+ * CompositorOGL. Call CreateGLManager with a LayerManagerComposite
+ * backed by a CompositorOGL.
+ */
+class GLManager
+{
+public:
+  static GLManager* CreateGLManager(LayerManagerComposite* aManager);
+
+  virtual ~GLManager() {}
+
+  virtual gl::GLContext* gl() const = 0;
+  virtual ShaderProgramOGL* GetProgram(GLenum aTarget, gfx::SurfaceFormat aFormat) = 0;
+  virtual void ActivateProgram(ShaderProgramOGL* aPrg) = 0;
+  virtual const gfx::Matrix4x4& GetProjMatrix() const = 0;
+  virtual void BindAndDrawQuad(ShaderProgramOGL *aProg, const gfx::Rect& aLayerRect,
+                               const gfx::Rect& aTextureRect) = 0;
+};
+
+} // namespace layers
+} // namespace mozilla
+
+#endif