#version 450
#extension GL_ARB_separate_shader_objects : enable

layout(location = 0) in vec2 v_pos;
layout(location = 1) in vec2 v_uv;
layout(location = 2) in vec2 v_dxdy;
layout(location = 3) in float rotation;
layout(location = 4) in float scale;
layout(location = 5) in float opacity;

layout(location = 0) out vec2 f_uv;
layout(location = 1) out float f_opacity;

layout(push_constant) uniform PushConstant {
    mat4 view;
} push_constant;

out gl_PerVertex {
    vec4 gl_Position;
};

void main() {
    mat2 rotmatrix = mat2(cos(rotation), -sin(rotation), sin(rotation), cos(rotation));
    vec2 pos = rotmatrix * scale * v_pos;
    f_uv = v_uv;
    f_opacity = opacity;
    gl_Position = push_constant.view * vec4(pos + v_dxdy, 0.0, 1.0);
}