Improve GL bindings for Ganesh surfaces.
Add support for binding a Ganesh surface directly to a framebuffer.
Refactored the code to make it easier to distinguish binding a Ganesh
surface to a texture from binding to a framebuffer.
Switch to using std::unique_ptr<> and update example code. Note that
these examples will see further changes shortly which will eliminate
the excess scoped_ptr / unique_ptr conversions among other things.
BUG=
R=abarth@chromium.org
Review URL: https://codereview.chromium.org/1518793004 .
diff --git a/mojo/skia/ganesh_framebuffer_surface.h b/mojo/skia/ganesh_framebuffer_surface.h
new file mode 100644
index 0000000..6925b03
--- /dev/null
+++ b/mojo/skia/ganesh_framebuffer_surface.h
@@ -0,0 +1,38 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MOJO_SKIA_GANESH_FRAMEBUFFER_SURFACE_H_
+#define MOJO_SKIA_GANESH_FRAMEBUFFER_SURFACE_H_
+
+#include <memory>
+
+#include "mojo/gpu/gl_texture.h"
+#include "mojo/skia/ganesh_context.h"
+#include "skia/ext/refptr.h"
+#include "third_party/skia/include/core/SkSurface.h"
+
+namespace mojo {
+
+// This class represents an SkSurface backed by a GL framebuffer, which is
+// appropriate for use with Ganesh. This is useful for rendering Skia
+// commands directly to the display framebuffer.
+class GaneshFramebufferSurface {
+ public:
+ // Creates a surface that wraps the currently bound GL framebuffer.
+ // The size of the surface is determined by querying the current viewport.
+ explicit GaneshFramebufferSurface(GaneshContext* context);
+ ~GaneshFramebufferSurface();
+
+ SkSurface* surface() const { return surface_.get(); }
+ SkCanvas* canvas() const { return surface_->getCanvas(); }
+
+ private:
+ skia::RefPtr<SkSurface> surface_;
+
+ DISALLOW_COPY_AND_ASSIGN(GaneshFramebufferSurface);
+};
+
+} // namespace mojo
+
+#endif // MOJO_SKIA_GANESH_FRAMEBUFFER_SURFACE_H_
