#version 450
#extension GL_EXT_buffer_reference : require
#extension GL_EXT_buffer_reference_uvec2 : require

layout(buffer_reference, buffer_reference_align = 4) buffer SSBO
{
	vec3 a1;			// Will be 12-byte packed
	float a2;
};

layout(push_constant) uniform UBO
{
	uvec2 b;
};

void main()
{
	SSBO(b).a1 = vec3(1.0, 2.0, 3.0);		// uvec2 -> buff ref and assign to packed
	uvec2 v2 = uvec2(SSBO(b + 32));			// uvec2 -> buff ref -> uvec2
	vec3 v3 = SSBO(v2).a1;					// uvec2 -> buff ref and assign from packed
	SSBO(v2).a1 = v3 + 1.0;					// uvec2 -> buff ref and assign to packed
}