#version 450

#define LOCAL_SIZE 8

layout (local_size_x = LOCAL_SIZE, local_size_y = LOCAL_SIZE, local_size_z = 1) in;
layout (set = 1, binding = 0, rgba8) uniform writeonly image2D outImage;
layout(set = 2, binding = 0) uniform UBO
{
	uvec2 workgroupSize;
} ubo;

void main()
{
	vec2 coord = gl_GlobalInvocationID.xy;
	vec2 totalWorkgroupSize = vec2(ubo.workgroupSize) * vec2(LOCAL_SIZE);
	vec4 col = vec4(
		coord.x / totalWorkgroupSize.x,
		coord.y / totalWorkgroupSize.y,
		1.0,
		1.0
	);
	imageStore(outImage, ivec2(coord), col);
}