#extension GL_EXT_buffer_reference : require

struct vertex {
    float    pos_x;
    float    pos_y;
    float    uv_x;
    float    uv_y;
    uint    color;
};

layout(buffer_reference) readonly buffer vertices {
    vertex vertices[];
};

layout(push_constant) uniform registers {
    vertices vertex_buffer;
    // vec2 scale;
    // vec2 translate;
    // uint texture_index;
    // uint padding;
};

out gl_PerVertex {
    vec4 gl_Position;
};

layout(location = 0) out struct {
    vec2 uv;
    vec4 color;
} Out;


void main() {
    vertex v = vertex_buffer.vertices[gl_VertexIndex];

    Out.color = unpackUnorm4x8(v.color);
    Out.uv = vec2(v.uv_x, v.uv_y);

    vec2 pos = vec2(v.pos_x, v.pos_y);
    gl_Position = vec4(pos * (vec2(1280.f, 720.f) / 2.f) + vec2(-1.f, -1.f), 0.0, 1.0);
    // gl_Position = vec4(pos * scale + translate, -1.f), 0.0, 1.0);
}