mirror of
https://github.com/italicsjenga/slang-shaders.git
synced 2024-11-29 19:01:31 +11:00
78 lines
2.7 KiB
Plaintext
78 lines
2.7 KiB
Plaintext
#version 450
|
|
|
|
layout(std140, set = 0, binding = 0) uniform UBO
|
|
{
|
|
mat4 MVP;
|
|
vec4 OutputSize;
|
|
vec4 OriginalSize;
|
|
vec4 SourceSize;
|
|
} global;
|
|
|
|
#define overscan_percent_x 0.0 // crop width of image by X%; default is 0.0
|
|
#define overscan_percent_y 0.0 // crop height of image by X%; default is 0.0
|
|
#define saturation 1.0 // color saturation; default 1.0
|
|
#define monitor_gamma 2.2 // gamma setting of your current display; LCD monitors typically have a gamma of 2.2
|
|
#define target_gamma 2.4 // the gamma you want the image to have; CRT TVs typically have a gamma of 2.4
|
|
#define contrast 1.0 // image contrast; default 1.0
|
|
#define luminance 1.0 // image luminance; default 1.0
|
|
#define bright_boost 0.0 // adds to the total brightness. Negative values decrease it; Use values between 1.0 (totally white) and -1.0 (totally black); default is 0.0
|
|
#define R 1.0
|
|
#define G 1.0
|
|
#define B 1.0
|
|
#define ZOOM 1.0
|
|
#define XPOS 0.0
|
|
#define YPOS 0.0
|
|
#define V_OSMASK 0.0
|
|
#define H_OSMASK 0.0
|
|
|
|
// Image Adjustment
|
|
// Author: hunterk
|
|
// License: Public domain
|
|
|
|
#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;
|
|
vec2 shift = 0.5 * global.SourceSize.zw / global.SourceSize.xy;
|
|
vec2 overscan_coord = ((TexCoord - shift) / ZOOM) * (1.0 - vec2(overscan_percent_x / 100.0, overscan_percent_y / 100.0)) + shift;
|
|
vTexCoord = overscan_coord + vec2(XPOS, YPOS);
|
|
}
|
|
|
|
#pragma stage fragment
|
|
layout(location = 0) in vec2 vTexCoord;
|
|
layout(location = 0) out vec4 FragColor;
|
|
layout(set = 0, binding = 2) uniform sampler2D Source;
|
|
|
|
vec3 grayscale(vec3 col)
|
|
{
|
|
// ATSC grayscale standard
|
|
return vec3(dot(col, vec3(0.2126, 0.7152, 0.0722)));
|
|
}
|
|
|
|
void main()
|
|
{
|
|
vec3 res = texture(Source, vTexCoord).rgb; // sample the texture
|
|
vec3 gamma = vec3(monitor_gamma / target_gamma); // setup ratio of display's gamma vs desired gamma
|
|
vec3 AvgLumin = vec3(0.5, 0.5, 0.5);
|
|
vec3 intensity = grayscale(res); // find luminance
|
|
vec3 satColor = mix(intensity, res, saturation); // apply saturation
|
|
vec3 conColor = mix(AvgLumin, satColor, contrast); // apply contrast
|
|
conColor = pow(conColor, 1.0 / vec3(gamma)); // Apply gamma correction
|
|
conColor = clamp(conColor * luminance, 0.0, 1.0); // apply luminance
|
|
conColor += vec3(bright_boost); // apply brightboost
|
|
conColor *= vec3(R, G, B);
|
|
if (vTexCoord.y > V_OSMASK && vTexCoord.y < (1.0 - V_OSMASK))
|
|
conColor = conColor;
|
|
else
|
|
conColor = vec3(0.0);
|
|
|
|
if (vTexCoord.x > H_OSMASK && vTexCoord.x < (1.0 - H_OSMASK))
|
|
conColor = conColor;
|
|
else
|
|
conColor = vec3(0.0);
|
|
FragColor = vec4(conColor, 1.0);
|
|
} |