2013-02-27 00:24:16 -05:00
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$input v_texcoord0
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/*
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2014-02-11 01:07:04 -05:00
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* Copyright 2011-2014 Branimir Karadzic. All rights reserved.
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2013-02-27 00:24:16 -05:00
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* License: http://www.opensource.org/licenses/BSD-2-Clause
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*/
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#include "common.sh"
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SAMPLER2D(u_texColor, 0);
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void main()
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{
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float delta = 0.0001;
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vec3 rgb0 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[0].xy) );
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vec3 rgb1 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[1].xy) );
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vec3 rgb2 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[2].xy) );
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vec3 rgb3 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[3].xy) );
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vec3 rgb4 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[4].xy) );
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vec3 rgb5 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[5].xy) );
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vec3 rgb6 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[6].xy) );
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vec3 rgb7 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[7].xy) );
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vec3 rgb8 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[8].xy) );
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float avg = luma(rgb0).x
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+ luma(rgb1).x
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+ luma(rgb2).x
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+ luma(rgb3).x
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+ luma(rgb4).x
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+ luma(rgb5).x
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+ luma(rgb6).x
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+ luma(rgb7).x
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+ luma(rgb8).x
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;
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avg *= 1.0/9.0;
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gl_FragColor = encodeRE8(avg);
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}
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