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2014-10-05
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1KB
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45 lines
/*
* (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/>.
*
*/
sampler s0 : register(s0);
float4 p0 : register(c0);
#define width (p0[0])
#define height (p0[1])
float4 main(float2 tex : TEXCOORD0) : COLOR
{
float dx = 1 / width;
float dy = 1 / height;
float4 c1 = tex2D(s0, tex + float2(-dx, -dy));
float4 c2 = tex2D(s0, tex + float2( 0, -dy));
float4 c4 = tex2D(s0, tex + float2(-dx, 0));
float4 c6 = tex2D(s0, tex + float2( dx, 0));
float4 c8 = tex2D(s0, tex + float2( 0, dy));
float4 c9 = tex2D(s0, tex + float2( dx, dy));
float4 c0 = (-c1 - c2 - c4 + c6 + c8 + c9);
c0 = (c0.r + c0.g + c0.b) / 3 + 0.5;
return c0;
}