#version 450
#pragma shader_stage(compute)

layout (binding = 0) uniform sampler2D tex_in;
layout (binding = 1, rgba8) uniform image2D tex_out;

layout (local_size_x = 8, local_size_y = 8) in;

void main() {
	vec4 val = texelFetch(tex_in, ivec2(gl_GlobalInvocationID.xy), 0);
	imageStore(tex_out, ivec2(gl_GlobalInvocationID.xy), 1.0 - val);
}