Pixel-Composer/shaders/sh_grey_alpha/sh_grey_alpha.fsh
2024-01-08 14:10:50 +07:00

15 lines
383 B
GLSL

varying vec2 v_vTexcoord;
varying vec4 v_vColour;
uniform int replace;
uniform vec4 color;
float bright(in vec4 col) {
return dot(col.rgb, vec3(0.2126, 0.7152, 0.0722)) * col.a;
}
void main() {
vec4 col = texture2D( gm_BaseTexture, v_vTexcoord );
if(replace == 0) gl_FragColor = vec4(col.rgb, bright(col));
else gl_FragColor = vec4(color.rgb, bright(col) * color.a);
}