41 lines
1.3 KiB
TypeScript
41 lines
1.3 KiB
TypeScript
/*
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* SPDX-FileCopyrightText: syuilo and misskey-project
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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export function loadShader(gl: WebGL2RenderingContext, type: GLenum, source: string): WebGLShader {
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const shader = gl.createShader(type);
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if (shader == null) {
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throw new Error('falied to create shader');
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}
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gl.shaderSource(shader, source);
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gl.compileShader(shader);
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if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
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console.error(`falied to compile shader: ${gl.getShaderInfoLog(shader)}`);
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gl.deleteShader(shader);
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throw new Error(`falied to compile shader: ${gl.getShaderInfoLog(shader)}`);
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}
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return shader;
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}
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export function initShaderProgram(gl: WebGL2RenderingContext, vsSource: string, fsSource: string): WebGLProgram {
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const vertexShader = loadShader(gl, gl.VERTEX_SHADER, vsSource);
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const fragmentShader = loadShader(gl, gl.FRAGMENT_SHADER, fsSource);
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const shaderProgram = gl.createProgram();
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gl.attachShader(shaderProgram, vertexShader);
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gl.attachShader(shaderProgram, fragmentShader);
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gl.linkProgram(shaderProgram);
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if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
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console.error(`failed to init shader: ${gl.getProgramInfoLog(shaderProgram)}`);
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throw new Error('failed to init shader');
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}
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return shaderProgram;
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}
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