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New shader: sketchy. Makes the screen look like a pencil sketch with a bit of color.

This commit is contained in:
Marcus Wanners 2009-08-12 01:03:59 +00:00
parent b325168bb0
commit 11c0e63895
1 changed files with 17 additions and 0 deletions
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sketchy.txt Normal file
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uniform samplerRECT samp0 : register(s0);
void main(out float4 ocol0 : COLOR0, in float2 uv0 : TEXCOORD0)
{
float4 c0 = texRECT(samp0, uv0).rgba;
float4 tmp = float4(0, 0, 0, 0);
tmp += c0 - texRECT(samp0, uv0 + float2(2, 2)).rgba;
tmp += c0 - texRECT(samp0, uv0 - float2(2, 2)).rgba;
tmp += c0 - texRECT(samp0, uv0 + float2(2, -2)).rgba;
tmp += c0 - texRECT(samp0, uv0 - float2(2, -2)).rgba;
float grey = ((0.222 * tmp.r) + (0.707 * tmp.g) + (0.071 * tmp.b));
// get rid of the bottom line, as it is incorrect.
if (uv0[1] < 163)
tmp = 1;
c0 = c0+1-grey*7;
ocol0 = float4(c0.r, c0.g, c0.b, 1);
}