wined3d: Re-add a comment which got lost.
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@ -3459,6 +3459,12 @@ static HRESULT IWineD3DSurfaceImpl_BltOverride(IWineD3DSurfaceImpl *This, RECT *
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/* Activate the destination context, set it up for blitting */
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ActivateContext(myDevice, (IWineD3DSurface *) This, CTXUSAGE_BLIT);
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/* The coordinates of the ddraw front buffer are always fullscreen ('screen coordinates',
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* while OpenGL coordinates are window relative.
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* Also beware of the origin difference(top left vs bottom left).
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* Also beware that the front buffer's surface size is screen width x screen height,
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* whereas the real gl drawable size is the size of the window.
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*/
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if (dstSwapchain && (IWineD3DSurface *)This == dstSwapchain->frontBuffer) {
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RECT windowsize;
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POINT offset = {0,0};
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