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update ntsc-simple (#398)

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* Update ntsc-simple-1.glsl

* Update ntsc-simple-2.glsl
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metallic77 2024-02-20 16:01:56 +02:00 committed by GitHub
parent 5deeb86497
commit ed8aa0b2f6
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1 changed files with 5 additions and 4 deletions
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ntsc/shaders/ntsc-simple/ntsc-simple-2.glsl
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@ -14,8 +14,8 @@
#pragma parameter y_width "Luma Width (Blurry)" 2.0 1.0 8.0 1.0
#pragma parameter afacts "NTSC Artifacts Strength (lowpass Y)" 0.02 0.0 1.0 0.01
#pragma parameter animate_afacts "NTSC Artifacts Animate" 0.0 0.0 1.0 1.0
#pragma parameter phase_shifti "Phase Shift I" -0.3 -5.0 5.0 0.05
#pragma parameter phase_shiftq "Phase Shift Q" 0.1 -5.0 5.0 0.05
#pragma parameter phase_shifti "Phase Shift I" 0.0 -5.0 5.0 0.05
#pragma parameter phase_shiftq "Phase Shift Q" 0.0 -5.0 5.0 0.05
#pragma parameter yuv_rgb "YIQ/YUV" 1.0 0.0 1.0 1.0
#if defined(VERTEX)
@ -150,6 +150,7 @@ vec2 size = SourceSize.xy;
vec2 uv = vTexCoord;
int a = int(iq_width);
int b = int(y_width);
//Sample composite signal and decode to YIQ
vec3 YIQ = vec3(0);
float sum = 0.0;
@ -165,11 +166,11 @@ int b = int(y_width);
for (int n=-a; n<a; n++) {
vec2 pos = uv + vec2(float(n) / size.x, 0.0);
float phase = (vTexCoord.x*SourceSize.x + float(n))*PI*0.5- mod(vTexCoord.y*SourceSize.y,2.0)*PI ;
float phase = (vTexCoord.x*SourceSize.x + float(n))*PI*0.5 -mod(vTexCoord.y*SourceSize.y,2.0)*PI ;
//animate to hide artifacts
if (animate_afacts == 1.0) phase *= sin(float(FrameCount))<0.0? -1.0:1.0;
// add hann window function
YIQ.yz += COMPAT_TEXTURE(Source, pos).gb * ntsc_sat*vec2(sin(phase+phase_shifti), cos(phase+phase_shiftq));
YIQ.yz += COMPAT_TEXTURE(Source, pos).gb * ntsc_sat*4.0*vec2(sin(phase+phase_shifti), cos(phase+phase_shiftq))*hann(float(n),a*4,0.0);
}
YIQ.yz /= iq_width*2.0;