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4c1dd6e9
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Leszek Koltunski
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//////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2016 Leszek Koltunski //
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// //
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// This file is part of Distorted. //
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// //
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// Distorted is free software: you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation, either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// Distorted is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details. //
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// //
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f1d5ea12
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Leszek Koltunski
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// You should have received a copy of the GNU General Public License //
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4c1dd6e9
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Leszek Koltunski
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// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
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//////////////////////////////////////////////////////////////////////////////////////////////
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2e7ad49f
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Leszek Koltunski
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precision lowp float;
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94f6d472
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Leszek Koltunski
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#if __VERSION__ != 100
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f2367b75
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Leszek Koltunski
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in vec2 v_TexCoordinate;
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out vec4 fragColor;
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1cbf4103
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leszek
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#define TEXTURE texture
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#define FRAG_COLOR fragColor
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94f6d472
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Leszek Koltunski
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#else
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varying vec2 v_TexCoordinate;
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1cbf4103
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leszek
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#define TEXTURE texture2D
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#define FRAG_COLOR gl_FragColor
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94f6d472
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Leszek Koltunski
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#endif
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f2367b75
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Leszek Koltunski
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uniform sampler2D u_ColorTexture;
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uniform sampler2D u_DepthTexture;
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5ccafcca
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Leszek Koltunski
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uniform float u_Offsets[MAX_BLUR];
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0d81d0fb
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Leszek Koltunski
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uniform float u_Weights[MAX_BLUR];
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uniform int u_Radius;
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4c1dd6e9
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Leszek Koltunski
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//////////////////////////////////////////////////////////////////////////////////////////////
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void main()
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{
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fd2db957
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Leszek Koltunski
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float depth = TEXTURE(u_DepthTexture,v_TexCoordinate).r;
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if( u_Radius>1 )
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{
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float offset = u_Offsets[u_Radius];
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depth = min(depth, TEXTURE(u_DepthTexture,vec2(v_TexCoordinate.x,v_TexCoordinate.y+offset)).r);
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depth = min(depth, TEXTURE(u_DepthTexture,vec2(v_TexCoordinate.x,v_TexCoordinate.y-offset)).r);
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depth = min(depth, TEXTURE(u_DepthTexture,vec2(v_TexCoordinate.x+offset,v_TexCoordinate.y)).r);
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depth = min(depth, TEXTURE(u_DepthTexture,vec2(v_TexCoordinate.x-offset,v_TexCoordinate.y)).r);
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}
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gl_FragDepth = depth;
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f2367b75
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Leszek Koltunski
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94f6d472
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Leszek Koltunski
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vec4 pixel= TEXTURE(u_ColorTexture,v_TexCoordinate) * u_Weights[0];
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0d81d0fb
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Leszek Koltunski
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9d5bb851
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Leszek Koltunski
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for (int i=1; i<=u_Radius; i+=1)
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0d81d0fb
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Leszek Koltunski
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{
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ed5bf324
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Leszek Koltunski
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pixel += ( TEXTURE(u_ColorTexture,vec2(v_TexCoordinate.x,v_TexCoordinate.y+u_Offsets[i])) +
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TEXTURE(u_ColorTexture,vec2(v_TexCoordinate.x,v_TexCoordinate.y-u_Offsets[i])) ) * u_Weights[i];
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0d81d0fb
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Leszek Koltunski
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}
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f1d5ea12
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Leszek Koltunski
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1cbf4103
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leszek
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FRAG_COLOR = pixel;
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4c1dd6e9
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Leszek Koltunski
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}
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