webgl.js

// WebGL Helper functions

// Compile a shader
function createShader(gl, type, source) {
	let shader = gl.createShader(type);
	gl.shaderSource(shader, source);
	gl.compileShader(shader);
	let success = gl.getShaderParameter(shader, gl.COMPILE_STATUS);
	if (success) {
		return shader;
	}

	console.log(gl.getShaderInfoLog(shader));
	gl.deleteShader(shader);
}

// Create program
function createProgram(gl, vertexShaderSource, fragmentShaderSource) {
	let vertexShader = createShader(gl, gl.VERTEX_SHADER, vertexShaderSource);
	let fragmentShader = createShader(gl, gl.FRAGMENT_SHADER, fragmentShaderSource);
	let program = gl.createProgram();
	gl.attachShader(program, vertexShader);
	gl.attachShader(program, fragmentShader);
	gl.linkProgram(program);
	let success = gl.getProgramParameter(program, gl.LINK_STATUS);
	if (success) {
		return program;
	}

	console.log(gl.getProgramInfoLog(program));
	gl.deleteProgram(program);
}