ld58/code/vulkan/shaders/basic.vert

#version 460 core

#extension GL_EXT_scalar_block_layout : enable

struct Vertex {
	vec4 p;
	vec2 uv;
	uint c;
	uint pad;
};

layout(push_constant, row_major)
uniform Global {
	mat4 proj;
};

layout(binding = 0, scalar)
readonly buffer Vertices {
	Vertex vtx[];
};

layout(location = 0) out vec2 frag_uv;
layout(location = 1) out vec4 frag_c;
layout(location = 2) out flat uint idx;

void main() {
	Vertex v = vtx[gl_VertexIndex];

	gl_Position = proj * v.p;

	frag_uv = v.uv;
	frag_c  = vec4((v.c >> 24) & 0xFF, (v.c >> 16) & 0xFF, (v.c >> 8) & 0xFF, (v.c >> 0) & 0xFF) / 255.0f;
	frag_c  = frag_c.abgr;

	idx = v.pad;
}