#version 450

layout(location = 0) in vec2 inPos;
layout(location = 1) in vec2 inUV;

layout(location = 0) out vec2 outUV;


layout(push_constant) uniform pc {
    vec2 modelSize;
    vec2 position;
    vec2 screenSize;

} push_constants;

layout(set = 0, binding = 0) uniform ViewUniform{
    vec2 camPos;
    vec2 camScale;
} viewUniform;


void main() {
    vec2 ScaledPos = inPos * push_constants.modelSize;
    vec2 worldPos = push_constants.position + ScaledPos;
    worldPos += viewUniform.camPos;
    vec2 ndc = vec2(
    (worldPos.x / push_constants.screenSize.x) * 2.0 - 1.0,
    (worldPos.y / push_constants.screenSize.y) * 2.0 - 1.0
    );

    ndc.y = -ndc.y;


    gl_Position = vec4(ndc * viewUniform.camScale, 0.0, 1.0);
    outUV = vec2(inUV.x, 1 - inUV.y);
}