source:
code/branches/tutorial/Tutorial/Media/materials/programs/PosterizeFP.cg
@
31
| Last change on this file since 31 was 25, checked in by nicolasc, 17 years ago | |
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| File size: 330 bytes | |
| Line | |
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| 1 | sampler RT : register(s0); |
| 2 | |
| 3 | float4 Posterize_ps (float2 iTexCoord : TEXCOORD0) : COLOR |
| 4 | { |
| 5 | |
| 6 | float nColors = 8; |
| 7 | float gamma = 0.6; |
| 8 | |
| 9 | float4 texCol = tex2D(RT, iTexCoord); |
| 10 | float3 tc = texCol.xyz; |
| 11 | tc = pow(tc, gamma); |
| 12 | tc = tc * nColors; |
| 13 | tc = floor(tc); |
| 14 | tc = tc / nColors; |
| 15 | tc = pow(tc,1.0/gamma); |
| 16 | return float4(tc,texCol.w); |
| 17 | } |
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