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Last change
on this file since 12412 was
12115,
checked in by wiesep, 6 years ago
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Changed folder structure, deletet some unused files and cleaned up code
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File size:
726 bytes
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| Rev | Line | |
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| [12115] | 1 | //------------------------------- |
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| 2 | //BrightBloom_ps20.glsl |
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| 3 | // High-pass filter for obtaining lumminance |
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| 4 | // We use an aproximation formula that is pretty fast: |
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| 5 | // f(x) = ( -3 * ( x - 1 )^2 + 1 ) * 2 |
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| 6 | // Color += Grayscale( f(Color) ) + 0.6 |
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| 7 | // |
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| 8 | // Special thanks to ATI for their great HLSL2GLSL utility |
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| 9 | // http://sourceforge.net/projects/hlsl2glsl |
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| 10 | //------------------------------- |
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| 11 | |
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| 12 | uniform sampler2D RT; |
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| 13 | varying vec2 oUv0; |
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| 14 | |
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| 15 | void main() |
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| 16 | { |
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| 17 | vec4 tex; |
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| 18 | vec4 bright4; |
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| 19 | float bright; |
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| 20 | |
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| 21 | tex = texture2D(RT, oUv0); |
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| 22 | tex -= 1.00000; |
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| 23 | bright4 = -6.00000 * tex * tex + 2.00000; |
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| 24 | bright = dot( bright4, vec4( 0.333333, 0.333333, 0.333333, 0.000000) ); |
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| 25 | tex += (bright + 0.600000); |
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| 26 | |
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| 27 | gl_FragColor = tex; |
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| 28 | } |
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