1 files changed, 67 insertions, 0 deletions
diff --git a/cc/texture_copier.h b/cc/texture_copier.h
index 638cbb2..ba8d7bf 100644
--- a/cc/texture_copier.h
+++ b/cc/texture_copier.h
@@ -1,3 +1,70 @@
 // Copyright 2012 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 TextureCopier_h
+#define TextureCopier_h
+
+#include "base/basictypes.h"
+#include "GraphicsContext3D.h"
+#include "ProgramBinding.h"
+#include "ShaderChromium.h"
+#include <wtf/OwnPtr.h>
+#include <wtf/PassOwnPtr.h>
+
+namespace WebKit {
+class WebGraphicsContext3D;
+}
+
+namespace cc {
+class IntSize;
+
+class TextureCopier {
+public:
+    struct Parameters {
+        unsigned sourceTexture;
+        unsigned destTexture;
+        IntSize size;
+    };
+    // Copy the base level contents of |sourceTexture| to |destTexture|. Both texture objects
+    // must be complete and have a base level of |size| dimensions. The color formats do not need
+    // to match, but |destTexture| must have a renderable format.
+    virtual void copyTexture(Parameters) = 0;
+    virtual void flush() = 0;
+
+    virtual ~TextureCopier() { }
+};
+
+#if USE(ACCELERATED_COMPOSITING)
+
+class AcceleratedTextureCopier : public TextureCopier {
+public:
+    static PassOwnPtr<AcceleratedTextureCopier> create(WebKit::WebGraphicsContext3D* context, bool usingBindUniforms)
+    {
+        return adoptPtr(new AcceleratedTextureCopier(context, usingBindUniforms));
+    }
+    virtual ~AcceleratedTextureCopier();
+
+    virtual void copyTexture(Parameters) OVERRIDE;
+    virtual void flush() OVERRIDE;
+
+protected:
+    AcceleratedTextureCopier(WebKit::WebGraphicsContext3D*, bool usingBindUniforms);
+
+private:
+    typedef ProgramBinding<VertexShaderPosTexIdentity, FragmentShaderRGBATex> BlitProgram;
+
+    WebKit::WebGraphicsContext3D* m_context;
+    Platform3DObject m_fbo;
+    Platform3DObject m_positionBuffer;
+    OwnPtr<BlitProgram> m_blitProgram;
+    bool m_usingBindUniforms;
+
+    DISALLOW_COPY_AND_ASSIGN(AcceleratedTextureCopier);
+};
+
+#endif // USE(ACCELERATED_COMPOSITING)
+
+}
+
+#endif