Emulation/slang-shaders
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add options/tweaks

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metallic77 2024-03-14 08:57:27 +02:00 committed by GitHub
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commit 00bb1bf70c
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1 changed files with 14 additions and 9 deletions
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23
ntsc/shaders/ntsc-simple/ntsc-mini.slang
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@ -3,17 +3,22 @@
layout(push_constant) uniform Push
{
float ntsc_sat,lpass,comb_filter;
float ntsc_sat,lpass,comb_filter,ofq,luma_rate,mini_hue;
} params;
#pragma parameter comb_filter "Chroma Comb. Filter Strength" 0.6 0.0 1.0 0.05
#pragma parameter lpass "Luma Low Pass" 0.2 0.0 1.0 0.01
#pragma parameter comb_filter "Chroma Comb. Filter Str." 0.6 0.0 1.0 0.05
#pragma parameter luma_rate "Luma/Chroma Analysis Rate (typical 2.0)" 2.0 1.0 4.0 1.0
#pragma parameter lpass "Luma Low Pass (sharpness)" 0.2 0.0 1.0 0.01
#pragma parameter mini_hue "Hue Shift" 0.0 -6.3 6.3 0.05
#pragma parameter ntsc_sat "Saturation" 3.0 0.0 6.0 0.05
#pragma parameter ofq "Color Clock Frequency Mhz (typical 3.579)" 3.58 0.0 14.32 0.01
#define comb_filter params.comb_filter
#define lpass params.lpass
#define ntsc_sat params.ntsc_sat
#define ofq params.ofq
#define luma_rate params.luma_rate
#define mini_hue params.mini_hue
layout(std140, set = 0, binding = 0) uniform UBO
{
@ -72,7 +77,7 @@ return dot(vec3(1.0),yiq*phase);
}
void main() {
dx = vec2(SourceSize.z*0.5,0.0);
dx = vec2(SourceSize.z/luma_rate,0.0);
dy = vec2(0.0,SourceSize.w*0.25);
vec3 final = vec3(0.0);
float sum = 0.0;
@ -81,10 +86,10 @@ for (int n=-3; n<4; n++)
{
float p = float(n);
float w = exp(-lpass*p*p);
float carrier = (vTexCoord.x * SourceSize.x / (170.667 / OriginalSize.x) + p)*PI*0.5;
float carrier_up = (vTexCoord.x * SourceSize.x / (170.667 / OriginalSize.x) + p)*PI*0.5 + PI;
vec3 phase = vec3(1.0,0.5*cos(carrier) ,0.5*sin(carrier));
vec3 phase_up = vec3(1.0,0.5*cos(carrier_up),0.5*sin(carrier_up));
float carrier = (vTexCoord.x * ofq * 52.6 + p)*PI*0.5;
float carrier_up = (vTexCoord.x * ofq * 52.6 + p)*PI*0.5 + PI;
vec3 phase = vec3(1.0,0.5*cos(carrier+mini_hue) ,0.5*sin(carrier+mini_hue));
vec3 phase_up = vec3(1.0,0.5*cos(carrier_up+mini_hue),0.5*sin(carrier_up+mini_hue));
vec3 phasefinal = vec3(1.0,ntsc_sat*cos(carrier) ,ntsc_sat*sin(carrier));
float line_cur = compo0(p,phase)*w;