// $MinimumShaderProfile: ps_4_0
/*
 * (C) 2003-2006 Gabest
 * (C) 2006-2013 see Authors.txt
 *
 * This file is part of MPC-HC.
 *
 * MPC-HC is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * MPC-HC is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

// Run this shader before scaling.

Texture2D tex : register(t0);
SamplerState samp : register(s0);

cbuffer PS_CONSTANTS : register(b0)
{
	float  px;
	float  py;
	float  width;
	float  height;
	uint   counter;
	float  clock;
};

float4 main(float4 pos : SV_POSITION, float2 coord : TEXCOORD) : SV_Target
{
	float4 c0 = tex.Sample(samp, coord);

	float4 c1 = tex.Sample(samp, coord - float2(0, py));
	float4 c2 = tex.Sample(samp, coord + float2(0, py));
	c0 = (c0 * 2 + c1 + c2) / 4;

	return c0;
}