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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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// You should have received a copy of the GNU General Public License //
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// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
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//////////////////////////////////////////////////////////////////////////////////////////////
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precision mediump float;
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#if __VERSION__ != 100
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in vec3 v_Position; // Interpolated position for this fragment.
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in vec3 v_Normal; // Interpolated normal for this fragment.
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in vec2 v_TexCoordinate; // Interpolated texture coordinate per fragment.
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out vec4 fragColor; // The output color
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#define TEXTURE texture
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#define FRAG_COLOR fragColor
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#else
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varying vec3 v_Position; // Interpolated position for this fragment.
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varying vec3 v_Normal; // Interpolated normal for this fragment.
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varying vec2 v_TexCoordinate; // Interpolated texture coordinate per fragment.
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#define TEXTURE texture2D
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#define FRAG_COLOR gl_FragColor
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#endif
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uniform sampler2D u_Texture; // The input texture.
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#if NUM_FRAGMENT>0
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uniform int fNumEffects; // total number of fragment effects
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uniform int fName[NUM_FRAGMENT]; // their namess.
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uniform vec4 fUniforms[2*NUM_FRAGMENT]; // i-th effect is 2 consecutive vec4's: [2*i], [2*i+1]. First vec4 is the Interpolated values,
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// next describes the Region, i.e. area over which the effect is active.
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#endif // NUM_FRAGMENT>0
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//////////////////////////////////////////////////////////////////////////////////////////////
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void main()
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{
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vec4 color = TEXTURE(u_Texture,v_TexCoordinate);
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#if NUM_FRAGMENT>0
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vec2 diff;
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float degree;
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int effect=0;
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for(int i=0; i<fNumEffects; i++)
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{
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diff = (v_Position.xy - fUniforms[effect+1].xy)/fUniforms[effect+1].zw;
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degree = max(0.0,1.0-dot(diff,diff));
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// ENABLED EFFECTS WILL BE INSERTED HERE
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effect+=2;
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}
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#endif
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FRAG_COLOR = vec4(color.rgb * (1.0 + 7.0*v_Normal.z) * 0.125, color.a);
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}
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