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/**
* Initializes the WebGL Shader program
*/
export function initializeShaderProgram(gl, vertexShaderSource, fragmentShaderSource) {
const vertexShader = loadShader(gl, gl.VERTEX_SHADER, vertexShaderSource);
const fragmentShader = loadShader(gl, gl.FRAGMENT_SHADER, fragmentShaderSource);
const shaderProgram = gl.createProgram();
gl.attachShader(shaderProgram, vertexShader);
gl.attachShader(shaderProgram, fragmentShader);
gl.linkProgram(shaderProgram);
if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
console.error(`Unable to initialize shader program: ${gl.getProgramInfoLog(shaderProgram)}`);
return null;
}
return shaderProgram;
}
/**
* Initializes the buffers
*/
export function initializeBuffers(gl) {
const positionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
return {
position: positionBuffer
};
}
function loadShader(gl, type, source) {
const shader = gl.createShader(type);
gl.shaderSource(shader, source);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
console.error(`Unable to compile shader: ${gl.getShaderInfoLog(shader)}`);
gl.deleteShader(shader);
return null;
}
return shader;
}
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