#version 450
#extension GL_EXT_scalar_block_layout : require
layout(local_size_x = 1) in;

// Foo will be marked packed_float3 because offset of bar is just 12 bytes after foo.
struct Foo
{
	vec3 a;
};

// Bar will be marked as packed due to alignment of the struct itself cannot work without packed.
struct Bar
{
	vec3 a;
};

layout(scalar, set = 0, binding = 0) buffer SSBOScalar
{
	Foo foo;
	Bar bar;
} buffer_scalar;

void main()
{
	buffer_scalar.foo.a.x = 10.0;
	buffer_scalar.bar.a.x = 20.0;
}