1#version 460 core
2#extension GL_EXT_demote_to_helper_invocation : enable
3
4layout(set = 0, binding = 0) uniform sampler2D tex;
5layout(location = 0) in vec2 coord;
6layout(location = 0) out vec4 o;
7
8void main (void)
9{
10    vec4 v = texture(tex, coord);
11
12    if (v == vec4(0.1,0.2,0.3,0.4))
13        demote;
14
15    bool x = helperInvocationEXT();
16
17    o = v;
18}
19