11 lines
233 B
Plaintext
11 lines
233 B
Plaintext
|
uniform float opacity;
|
||
|
|
uniform bool invert_color;
|
||
|
|
uniform sampler2D tex;
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
vec4 c = texture2D(tex, gl_TexCoord[0].xy);
|
||
|
|
float y = dot(c.rgb, vec3(0.299, 0.587, 0.114));
|
||
|
|
// y = 1.0 -y;
|
||
|
|
gl_FragColor = vec4(y, y, y, 1.0);
|
||
|
|
}
|