slang-shaders/ntsc/shaders/maister/ntsc-pass2-decode.inc

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2016-07-13 14:38:02 +10:00
float one_x = 1.0 / global.SourceSize.x;
vec3 signal = vec3(0.0);
for (int i = 0; i < TAPS; i++)
{
float offset = float(i);
vec3 sums = fetch_offset(offset - float(TAPS), one_x) +
fetch_offset(float(TAPS) - offset, one_x);
signal += sums * vec3(luma_filter[i], chroma_filter[i], chroma_filter[i]);
}
signal += texture(Source, vTexCoord).xyz *
vec3(luma_filter[TAPS], chroma_filter[TAPS], chroma_filter[TAPS]);