mirror of https://github.com/mgba-emu/mgba.git
35 lines
1.1 KiB
GLSL
35 lines
1.1 KiB
GLSL
varying vec2 texCoord;
|
|
uniform sampler2D tex;
|
|
uniform vec2 texSize;
|
|
|
|
uniform float darken_screen;
|
|
const float target_gamma = 2.2;
|
|
const float display_gamma = 2.5;
|
|
const float sat = 1.0;
|
|
const float lum = 0.99;
|
|
const float contrast = 1.0;
|
|
const vec3 bl = vec3(0.0, 0.0, 0.0);
|
|
const vec3 r = vec3(0.84, 0.09, 0.15);
|
|
const vec3 g = vec3(0.18, 0.67, 0.10);
|
|
const vec3 b = vec3(0.0, 0.26, 0.73);
|
|
|
|
void main() {
|
|
vec4 screen = pow(texture2D(tex, texCoord), vec4(target_gamma + darken_screen)).rgba;
|
|
vec4 avglum = vec4(0.5);
|
|
screen = mix(screen, avglum, (1.0 - contrast));
|
|
|
|
mat4 color = mat4( r.r, r.g, r.b, 0.0,
|
|
g.r, g.g, g.b, 0.0,
|
|
b.r, b.g, b.b, 0.0,
|
|
bl.r, bl.g, bl.b, 1.0);
|
|
|
|
mat4 adjust = mat4( (1.0 - sat) * 0.3086 + sat, (1.0 - sat) * 0.3086, (1.0 - sat) * 0.3086, 1.0,
|
|
(1.0 - sat) * 0.6094, (1.0 - sat) * 0.6094 + sat, (1.0 - sat) * 0.6094, 1.0,
|
|
(1.0 - sat) * 0.0820, (1.0 - sat) * 0.0820, (1.0 - sat) * 0.0820 + sat, 1.0,
|
|
0.0, 0.0, 0.0, 1.0);
|
|
color *= adjust;
|
|
screen = clamp(screen * lum, 0.0, 1.0);
|
|
screen = color * screen;
|
|
gl_FragColor = pow(screen, vec4(1.0 / display_gamma + (darken_screen * 0.125)));
|
|
}
|