50 lines
1.6 KiB
JavaScript
50 lines
1.6 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.PROJECTION_MATRIX = new Float32Array([
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2, 0, 0, 0,
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0, -2, 0, 0,
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0, 0, 1, 0,
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-1, 1, 0, 1
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]);
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function createProgram(gl, vertexSource, fragmentSource) {
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var program = throwIfFalsy(gl.createProgram());
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gl.attachShader(program, throwIfFalsy(createShader(gl, gl.VERTEX_SHADER, vertexSource)));
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gl.attachShader(program, throwIfFalsy(createShader(gl, gl.FRAGMENT_SHADER, fragmentSource)));
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gl.linkProgram(program);
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var success = gl.getProgramParameter(program, gl.LINK_STATUS);
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if (success) {
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return program;
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}
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console.error(gl.getProgramInfoLog(program));
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gl.deleteProgram(program);
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}
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exports.createProgram = createProgram;
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function createShader(gl, type, source) {
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var shader = throwIfFalsy(gl.createShader(type));
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gl.shaderSource(shader, source);
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gl.compileShader(shader);
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var success = gl.getShaderParameter(shader, gl.COMPILE_STATUS);
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if (success) {
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return shader;
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}
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console.error(gl.getShaderInfoLog(shader));
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gl.deleteShader(shader);
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}
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exports.createShader = createShader;
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function expandFloat32Array(source, max) {
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var newLength = Math.min(source.length * 2, max);
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var newArray = new Float32Array(newLength);
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for (var i = 0; i < source.length; i++) {
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newArray[i] = source[i];
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}
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return newArray;
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}
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exports.expandFloat32Array = expandFloat32Array;
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function throwIfFalsy(value) {
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if (!value) {
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throw new Error('value must not be falsy');
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}
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return value;
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}
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exports.throwIfFalsy = throwIfFalsy;
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//# sourceMappingURL=WebglUtils.js.map
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