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forge-steel/shaders/frag2.glsl
T
2025-09-21 20:32:06 +02:00

19 lines
377 B
GLSL

// VIDEO 2
// -----------
// IN: 2 (RAW IN B)
// OUT: 4 (IN B)
in vec2 vUV;
out vec4 fragColor;
void main() {
float r, g, b, y, u, v;
vec4 src = texture(tex2, vec2(vUV.x, 1 - vUV.y));
y = src.r;
u = src.g - 0.5;
v = src.a - 0.5;
r = y + 1.13983 * v;
g = y - 0.39465 * u - 0.58060 * v;
b = y + 2.03211 * u;
fragColor = vec4(r, g, b, 1.0);
}