mirror of
https://github.com/italicsjenga/slang-shaders.git
synced 2024-11-23 08:11:29 +11:00
125 lines
3.1 KiB
Plaintext
125 lines
3.1 KiB
Plaintext
#version 450
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layout(push_constant) uniform Push
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{
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vec4 SourceSize;
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vec4 OriginalSize;
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vec4 OutputSize;
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uint FrameCount;
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float frameShape;
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float frameLimit;
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float frameSharpness;
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float TVNoise;
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float PALSignal;
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float phosphors;
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float border;
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} params;
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#pragma parameter frameShape "Border mask shape" 0.35 0.0 1.0 0.01
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#pragma parameter frameLimit "Border mask limit" 0.30 0.0 1.0 0.01
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#pragma parameter frameSharpness "Border mask sharpness" 1.10 0.0 4.0 0.01
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#pragma parameter TVNoise "PAL signal modulation + noise" 1.0 0.0 1.0 1.0
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#pragma parameter PALSignal "PAL signal simulation" 1.0 0.0 1.0 1.0
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#pragma parameter phosphors "Phosphor mask" 1.0 0.0 1.0 1.0
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#pragma parameter border "Border mask" 1.0 0.0 1.0 1.0
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layout(std140, set = 0, binding = 0) uniform UBO
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{
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mat4 MVP;
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} global;
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#pragma stage vertex
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layout(location = 0) in vec4 Position;
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layout(location = 1) in vec2 TexCoord;
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layout(location = 0) out vec2 vTexCoord;
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void main()
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{
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gl_Position = global.MVP * Position;
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vTexCoord = TexCoord;
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}
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#pragma stage fragment
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layout(location = 0) in vec2 vTexCoord;
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layout(location = 0) out vec4 FragColor;
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layout(set = 0, binding = 2) uniform sampler2D Source;
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float rand(float x)
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{
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vec2 co = vec2(x,x);
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float a = 12.9898;
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float b = 78.233;
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float c = 43758.5453;
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float dt= dot(co.xy ,vec2(a,b));
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float sn= mod(dt,3.14);
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return fract(sin(sn) * c);
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}
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void main()
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{
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vec4 col = vec4(0.0);
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vec2 q = vTexCoord.xy * TextureSize.xy / InputSize.xy;
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vec2 uv = q;
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vec2 uv_q = uv;
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vec2 uv_n = uv_q;
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mat3 rgbtoyuv = mat3(0.299, -0.147, 0.615, 0.587, -0.289, -0.515, 0.114, 0.436, -0.100);
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mat3 yuvtorgb = mat3(1.000, 1.000, 1.000, 0.000, -0.395, 2.032, 1.140, -0.581, 0.000);
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float shade = 1.0;
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if(params.TVNoise == 1.0)
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{
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shade -= rand((uv_q.x*params.FrameCount) * 0.1 + (uv_q.y*params.FrameCount) * 50.0 + params.FrameCount) * 0.5;
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}
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if(params.PALSignal == 1.0)
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{
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vec3 yuv = vec3(0.0);
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float fix = 0.3;
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float lumadelay = -0.002;
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for (int x = 10; x >= 0; x -= 1)
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{
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float xx = float(x) / 10.0;
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if(xx < 0.0) xx = 0.0 ;
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float x1 = (xx * -0.05)* fix + lumadelay;
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float x2 = (xx * 0.1)* fix + lumadelay;
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vec3 mult = (vec3(1.0) - pow(vec3(xx), vec3(0.2, 1.0, 1.0))) * 0.2;
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vec2 uv1 = uv_n + vec2(x1,0.0);
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vec2 uv2 = uv_n + vec2(x2,0.0);
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yuv += (rgbtoyuv * texture(Source,uv1).rgb) * mult;
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yuv += (rgbtoyuv * texture(Source,uv2).rgb) * mult;
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}
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yuv.r = yuv.r * 0.2 + (rgbtoyuv * texture(Source,uv_n).rgb).r * 0.8;
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col.rgb = yuvtorgb * yuv * shade;
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}
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else
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{
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col.rgb = texture(Source,uv_n).rgb;
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}
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if(params.phosphors==1.0)
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{
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float mod_factor = uv.y * params.OutputSize.y * params.OutputSize.y / params.OutputSize.y;
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vec3 dotMaskWeights = mix(vec3(1.0, 0.7, 1.0),vec3(0.7, 1.0, 0.7),floor(mod(mod_factor, 2.0)));
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col.rgb*= dotMaskWeights;
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}
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if(params.border ==1.0)
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{
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vec2 p=-1.0+2.0*crt(uv, 2.0);
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float f = (1.0- p.x *p.x) * (1.0-p.y *p.y);
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float frame = clamp(params.frameSharpness * (pow(f, params.frameShape) - params.frameLimit), 0.0, 1.0);
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col.rgb*=frame;
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}
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FragColor = vec4(col.rgb, 1.0);
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}
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