define([
	
], function(
	
) {
	return `
		attribute vec2 aVertexPosition;
		attribute vec2 aTextureCoord;

		uniform mat3 projectionMatrix;
		varying vec2 vTextureCoord;

		void main(void){
		    gl_Position = vec4((projectionMatrix * vec3(aVertexPosition, 1.0)).xy, 0.0, 1.0);
		    vTextureCoord = aTextureCoord;
		}
	`;	
});