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clean up crt filter a bit.

This commit is contained in:
Themaister 2010-11-13 14:16:45 +01:00
parent 11254285f4
commit 86d3e73395
1 changed files with 13 additions and 15 deletions
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28
hqflt/cg/crt.cg
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@ -36,17 +36,6 @@ struct input
float2 output_size;
};
float2 fract(float2 v)
{
float2 ret;
ret.x = v.x - floor(v.x);
ret.y = v.y - floor(v.y);
return ret;
}
float2 barrelDistortion(float2 coord)
{
float2 cc = coord - 0.5;
@ -65,8 +54,17 @@ output main_fragment(float2 texCoord : TEXCOORD0, uniform sampler2D decal : TEXU
float2 xy = barrelDistortion(texCoord.xy);
float2 one = 1.0/rubyTextureSize;
xy = xy + float2(0.0 , -0.5 * (phase + (1-phase) * rubyInputSize.y/rubyOutputSize.y) * one.y);
//float2 uv_ratio = fract(xy*rubyTextureSize);
float4 texels[8];
texels[0] = TEX2D(xy + float2(-one.x,0.0));
texels[1] = TEX2D(xy);
texels[2] = TEX2D(xy + float2(one.x, 0.0));
texels[3] = TEX2D(xy + float2(2 * one.x, 0.0));
texels[4] = TEX2D(xy + float2(-one.x,one.y));
texels[5] = TEX2D(xy + float2(0.0, one.y));
texels[6] = TEX2D(xy + one);
texels[7] = TEX2D(xy + float2(2 * one.x, one.y));
float2 uv_ratio = frac(xy*rubyTextureSize);
float4 col, col2;
@ -75,8 +73,8 @@ output main_fragment(float2 texCoord : TEXCOORD0, uniform sampler2D decal : TEXU
coeffs = (sin(PI * coeffs) * sin(PI * coeffs / 2.0)) / (coeffs * coeffs);
coeffs = coeffs / (coeffs.x+coeffs.y+coeffs.z+coeffs.w);
col = clamp(coeffs.x * TEX2D(xy + float2(-one.x,0.0)) + coeffs.y * TEX2D(xy) + coeffs.z * TEX2D(xy + float2(one.x, 0.0)) + coeffs.w * TEX2D(xy + float2(2 * one.x, 0.0)),0.0,1.0);
col2 = clamp(coeffs.x * TEX2D(xy + float2(-one.x,one.y)) + coeffs.y * TEX2D(xy + float2(0.0, one.y)) + coeffs.z * TEX2D(xy + one) + coeffs.w * TEX2D(xy + float2(2 * one.x, one.y)),0.0,1.0);
col = clamp(coeffs.x * texels[0] + coeffs.y * texels[1] + coeffs.z * texels[2] + coeffs.w * texels[3], 0.0, 1.0);
col2 = clamp(coeffs.x * texels[4] + coeffs.y * texels[5] + coeffs.z * texels[6] + coeffs.w * texels[7], 0.0, 1.0);
col = pow(col, gamma);
col2 = pow(col2, gamma);