#version 300 es

precision lowp float;

{macroDefinitions}

uniform mat3 modelTransform;
uniform vec2 squareToAspectRatio;

in vec4 vertexPosition;

out vec2 position;
out vec2 uvCoordinates;

void main() {
    vec3 vertexPosition2D = vec3(vertexPosition.xy, 1.0) * modelTransform;
    gl_Position = vec4(vertexPosition2D.xy, 0.0, 1.0);
    position = vertexPosition2D.xy * squareToAspectRatio;

    uvCoordinates = (vertexPosition2D * mat3(
        0.5, 0.0, 0.5,
        0.0, 0.5, 0.5,
        0.0, 0.0, 1.0
    )).xy;
}