gecko/gfx/layers/d3d10/CanvasLayerD3D10.h

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 * The Original Code is Mozilla Corporation code.
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 * The Initial Developer of the Original Code is Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2010
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 * Contributor(s):
 *   Vladimir Vukicevic <vladimir@pobox.com>
 *   Bas Schouten <bschouten@mozilla.com>
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#ifndef GFX_CANVASLAYERD3D10_H
#define GFX_CANVASLAYERD3D10_H

#include "LayerManagerD3D10.h"
#include "GLContext.h"
#include "gfxASurface.h"

namespace mozilla {
namespace layers {

class THEBES_API CanvasLayerD3D10 : public CanvasLayer,
                                    public LayerD3D10
{
public:
  CanvasLayerD3D10(LayerManagerD3D10 *aManager)
    : CanvasLayer(aManager, NULL)
    , LayerD3D10(aManager)
    , mDataIsPremultiplied(false)
    , mNeedsYFlip(false)
    , mHasAlpha(true)
  {
      mImplData = static_cast<LayerD3D10*>(this);
  }

  ~CanvasLayerD3D10();

  // CanvasLayer implementation
  virtual void Initialize(const Data& aData);

  // LayerD3D10 implementation
  virtual Layer* GetLayer();
  virtual void RenderLayer();

private:
  typedef mozilla::gl::GLContext GLContext;

  void UpdateSurface();

  nsRefPtr<gfxASurface> mSurface;
  mozilla::RefPtr<mozilla::gfx::DrawTarget> mDrawTarget;
  nsRefPtr<GLContext> mGLContext;
  nsRefPtr<ID3D10Texture2D> mTexture;
  nsRefPtr<ID3D10ShaderResourceView> mSRView;

  PRUint32 mCanvasFramebuffer;

  bool mDataIsPremultiplied;
  bool mNeedsYFlip;
  bool mIsD2DTexture;
  bool mUsingSharedTexture;
  bool mHasAlpha;

  nsAutoArrayPtr<PRUint8> mCachedTempBlob;
  PRUint32 mCachedTempBlob_Size;

  PRUint8* GetTempBlob(const PRUint32 aSize)
  {
      if (!mCachedTempBlob || aSize != mCachedTempBlob_Size) {
          mCachedTempBlob = new PRUint8[aSize];
          mCachedTempBlob_Size = aSize;
      }

      return mCachedTempBlob;
  }

  void DiscardTempBlob()
  {
      mCachedTempBlob = nsnull;
  }
};

} /* layers */
} /* mozilla */
#endif /* GFX_CANVASLAYERD3D10_H */