Last change
on this file since 12202 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:
588 bytes
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Line | |
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1 | //------------------------------- |
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2 | //BrightBloom_ps20.cg |
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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 += f(Color) |
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7 | //------------------------------- |
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8 | |
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9 | float4 main(float2 texCoord: TEXCOORD0, |
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10 | uniform sampler RT: register(s0) |
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11 | ) : COLOR { |
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12 | float4 tex = tex2D(RT, texCoord); |
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13 | |
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14 | tex -= 1; |
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15 | float4 bright4= -6 * tex * tex + 2; //float4 bright4= ( -3 * tex * tex + 1 ) * 2; |
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16 | float bright = dot( bright4, float4( 0.333333, 0.333333, 0.333333, 0) ); |
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17 | tex += bright + 0.6; |
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18 | |
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19 | return tex; |
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20 | } |
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