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49 lines
1.1 KiB
49 lines
1.1 KiB
export enum ShaderType {
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VERTEX,
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FRAGMENT,
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}
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export const createShader = (
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gl: WebGLRenderingContext,
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type: ShaderType,
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source: string
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): WebGLShader | null => {
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const SHADER_TYPE_TO_GL_TYPE = {
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[ShaderType.VERTEX]: gl.VERTEX_SHADER,
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[ShaderType.FRAGMENT]: gl.FRAGMENT_SHADER,
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};
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const shader = gl.createShader(SHADER_TYPE_TO_GL_TYPE[type]);
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gl.shaderSource(shader, source);
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gl.compileShader(shader);
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const success = gl.getShaderParameter(shader, gl.COMPILE_STATUS);
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if (!success) {
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console.error(gl.getShaderInfoLog(shader));
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gl.deleteShader(shader);
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return null;
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}
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return shader;
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};
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export const createProgram = (
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gl: WebGLRenderingContext,
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vertexShader: WebGLShader,
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fragmentShader: WebGLShader
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): WebGLProgram | null => {
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const program = gl.createProgram();
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gl.attachShader(program, vertexShader);
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gl.attachShader(program, fragmentShader);
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gl.linkProgram(program);
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const success = gl.getProgramParameter(program, gl.LINK_STATUS);
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if (!success) {
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console.error(gl.getProgramInfoLog(program));
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gl.deleteProgram(program);
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return null;
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}
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return program;
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};
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