Pixel-Composer/shaders/sh_time_remap/sh_time_remap.fsh
2022-01-13 11:24:03 +07:00

22 lines
437 B
GLSL

//
// Simple passthrough fragment shader
//
varying vec2 v_vTexcoord;
varying vec4 v_vColour;
uniform sampler2D map;
uniform float vMin;
uniform float vMax;
float bright(in vec4 col) {
return dot(col.rgb, vec3(0.2126, 0.7152, 0.0722)) * col.a;
}
void main() {
float b = bright(texture2D( map, v_vTexcoord ));
if(b > vMin && b <= vMax)
gl_FragColor = texture2D( gm_BaseTexture, v_vTexcoord );
else
gl_FragColor = vec4(0.);
}