29 lines
695 B
Plaintext
29 lines
695 B
Plaintext
// Copyright 2006-2010 (C) - Frictional Games
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//
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// This file is part of HPL1 Engine
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//
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// For conditions of distribution and use, see copyright notice in LICENSE-shaders
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//
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///////////////////////////////////////////////////////
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/// REFRACTION FRAGMENT PROGRAM /////////////////
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///////////////////////////////////////////////////////
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in vec2 vUv; //in object space
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in vec4 vColor;
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OUTPUT
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uniform sampler2DRect tex0; //screenMap
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uniform sampler2D tex1; //refractMap
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uniform vec2 screenSize;
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uniform float scale;
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void main()
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{
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vec3 offset = vec3(((texture(tex1, vUv)*2.0) - vec4(1.0)) * vColor.w);
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outColor = texture2DRect(tex0, gl_FragCoord.xy - (offset.xy*scale) / gl_FragCoord.z);
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}
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