#version 300 es precision highp float; uniform mat3 modelTransform; uniform vec2 squareToAspectRatio; in vec4 vertexPosition; out vec2 position; void main() { vec3 vertexPosition2D = vec3(vertexPosition.xy, 1.0) * modelTransform; gl_Position = vec4(vertexPosition2D.xy, 0.0, 1.0); position = vertexPosition2D.xy * squareToAspectRatio; }