Initial version rendering 2D path for O3D. This will eventually allow O3D app...

core/cross/renderer.h

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
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   //      default values are (0.0, 1.0). The depth range provides the mapping of
   //      the clip space coordinates into normalized z buffer coordinates.
   //
   // Note: The rectangle values must describe a rectangle that is 100% inside
   // the client area. In other words, (0.5, 0.0, 1.0, 1.0) would describe an
   // area that is 1/2 off right side of the screen. That is an invalid value and
   // will be clipped to (0.5, 0.0, 0.5, 1.0).
   void SetViewport(const Float4& rectangle, const Float2& depth_range);
 
   // Clears the current buffers.
-  void Clear(const Float4 &color,
-             bool color_flag,
-             float depth,
-             bool depth_flag,
-             int stencil,
-             bool stencil_flag);
+  virtual void Clear(const Float4 &color,
+                     bool color_flag,
+                     float depth,
+                     bool depth_flag,
+                     int stencil,
+                     bool stencil_flag);
 
   // Renders this Element using the parameters from override first, followed by
   // the draw_element, followed by params on this Primitive and material.
   // Parameters:
   //   element: Element to draw
   //   draw_element: DrawElement to override params with.
   //   material: Material to render with.
   //   override: Override to render with.
   void RenderElement(Element* element,
                      DrawElement* draw_element,
                      Material* material,
                      ParamObject* override,
                      ParamCache* param_cache);
 
   // Pushes rendering states.
-  void PushRenderStates(State *state);
+  virtual void PushRenderStates(State *state);
 
   // Pops rendering states to back to their previous settings.
-  void PopRenderStates();
+  virtual void PopRenderStates();
 
   // Binds the passed surfaces to the color and depth buffers of the
   // renderer.
   // Parameters:
   //   surface: RenderSurface to bind to the color buffer.
   //   depth_surface: RenderDepthStencilSurface to bind to the depth/stencil
   //       buffer.
   //   is_back_buffer: True if the render surface being set should be considered
   //       the backbuffer.
   void SetRenderSurfaces(const RenderSurface* surface,
@@ skipping 456 matching lines @@
 
   // Maximum frames per second.
   int max_fps_;
 
   DISALLOW_COPY_AND_ASSIGN(Renderer);
 };
 
 }  // namespace o3d
 
 #endif  // O3D_CORE_CROSS_RENDERER_H_