#include "stdfx.h"
//#include "tfxparam.h"
#include "trop.h"
//===================================================================

class PremultiplyFx : public TStandardRasterFx
{
	FX_PLUGIN_DECLARATION(PremultiplyFx)
	TRasterFxPort m_input;

public:
	PremultiplyFx() { addInputPort("Source", m_input); }
	~PremultiplyFx(){};

	bool doGetBBox(double frame, TRectD &bBox, const TRenderSettings &info)
	{
		if (m_input.isConnected())
			return m_input->doGetBBox(frame, bBox, info);
		else {
			bBox = TRectD();
			return false;
		}
	}

	void doCompute(TTile &tile, double frame, const TRenderSettings &ri);
	bool canHandle(const TRenderSettings &info, double frame) { return true; }
};

//------------------------------------------------------------------------------

void PremultiplyFx::doCompute(TTile &tile, double frame,
							  const TRenderSettings &ri)
{
	if (!m_input.isConnected())
		return;

	m_input->compute(tile, frame, ri);

	TRop::premultiply(tile.getRaster());
}

FX_PLUGIN_IDENTIFIER(PremultiplyFx, "premultiplyFx");