diff --git a/misc/color-mangler.slang b/misc/color-mangler.slang new file mode 100644 index 0000000..a0b7c8c --- /dev/null +++ b/misc/color-mangler.slang @@ -0,0 +1,91 @@ +#version 450 + +layout(push_constant) uniform Push +{ + float display_gamma; + float target_gamma; + float sat; + float lum; + float cntrst; + float r; + float g; + float b; + float rg; + float rb; + float gr; + float gb; + float br; + float bg; + float blr; + float blg; + float blb; +} params; + +layout(std140, set = 0, binding = 0) uniform UBO +{ + mat4 MVP; + vec4 OutputSize; + vec4 OriginalSize; + vec4 SourceSize; +} global; + +/* + Color Mangler + Author: hunterk + License: Public domain +*/ +#pragma parameter display_gamma "Display Gamma" 2.2 0.0 10.0 0.1 +#pragma parameter target_gamma "Target Gamma" 2.2 0.0 10.0 0.1 +#pragma parameter sat "Saturation" 1.0 0.0 3.0 0.01 +#pragma parameter lum "Luminance" 1.0 0.0 5.0 0.01 +#pragma parameter cntrst "Contrast" 1.0 0.0 2.0 0.01 +#pragma parameter r "Red" 1.0 0.0 2.0 0.01 +#pragma parameter g "Green" 1.0 0.0 2.0 0.01 +#pragma parameter b "Blue" 1.0 0.0 2.0 0.01 +#pragma parameter rg "Red-Green Tint" 0.0 0.0 1.0 0.005 +#pragma parameter rb "Red-Blue Tint" 0.0 0.0 1.0 0.005 +#pragma parameter gr "Green-Red Tint" 0.0 0.0 1.0 0.005 +#pragma parameter gb "Green-Blue Tint" 0.0 0.0 1.0 0.005 +#pragma parameter br "Blue-Red Tint" 0.0 0.0 1.0 0.005 +#pragma parameter bg "Blue-Green Tint" 0.0 0.0 1.0 0.005 +#pragma parameter blr "Black-Red Tint" 0.0 0.0 1.0 0.005 +#pragma parameter blg "Black-Green Tint" 0.0 0.0 1.0 0.005 +#pragma parameter blb "Black-Blue Tint" 0.0 0.0 1.0 0.005 + +#pragma stage vertex +layout(location = 0) in vec4 Position; +layout(location = 1) in vec2 TexCoord; +layout(location = 0) out vec2 vTexCoord; + +void main() +{ + gl_Position = global.MVP * Position; + vTexCoord = TexCoord; +} + +#pragma stage fragment +layout(location = 0) in vec2 vTexCoord; +layout(location = 0) out vec4 FragColor; +layout(set = 0, binding = 2) uniform sampler2D Source; + +void main() +{ + vec4 screen = pow(texture(Source, vTexCoord), vec4(params.target_gamma)).rgba; + vec4 avglum = vec4(0.5); + screen = mix(screen, avglum, (1.0 - params.cntrst)); + + // params.r params.g params.b params.black +mat4 color = mat4(params.r, params.rg, params.rb, 0.0, //red channel + params.gr, params.g, params.gb, 0.0, //green channel + params.br, params.bg, params.b, 0.0, //blue channel + params.blr, params.blg, params.blb, 0.0); //alpha channel; these numbers do nothing for our purposes. + +mat4 adjust = mat4((1.0 - params.sat) * 0.3086 + params.sat, (1.0 - params.sat) * 0.3086, (1.0 - params.sat) * 0.3086, 1.0, +(1.0 - params.sat) * 0.6094, (1.0 - params.sat) * 0.6094 + params.sat, (1.0 - params.sat) * 0.6094, 1.0, +(1.0 - params.sat) * 0.0820, (1.0 - params.sat) * 0.0820, (1.0 - params.sat) * 0.0820 + params.sat, 1.0, +0.0, 0.0, 0.0, 1.0); + color *= adjust; + screen = clamp(screen * params.lum, 0.0, 1.0); + screen = color * screen; + FragColor = pow(screen, vec4(1.0 / params.display_gamma)); +} \ No newline at end of file