36 lines
1.2 KiB
TypeScript
36 lines
1.2 KiB
TypeScript
import Script from './Script';
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import error from './utils/error';
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export default class Shader {
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public readonly shader?: WebGLShader | null;
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constructor(readonly gl: WebGLRenderingContext, readonly script: Script) {
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// Now figure out what type of shader script we have, based on its MIME type.
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if (script.type === 'x-shader/x-fragment') {
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this.shader = gl.createShader(gl.FRAGMENT_SHADER);
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} else if (script.type === 'x-shader/x-vertex') {
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this.shader = gl.createShader(gl.VERTEX_SHADER);
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} else {
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error(`Unknown shader type: ${script.type}`);
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return;
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}
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if (!this.shader) {
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error(`Shader is ${typeof this.shader}`);
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return;
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}
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// Send the source to the shader object.
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gl.shaderSource(this.shader, script.source);
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// Compile the shader program.
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gl.compileShader(this.shader);
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// See if it compiled successfully.
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if (!gl.getShaderParameter(this.shader, gl.COMPILE_STATUS)) {
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error('An error occurred compiling the shaders: ' + gl.getShaderInfoLog(this.shader));
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return;
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}
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}
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}
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