WebGLRenderingContext: getProgramInfoLog() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨July 2015⁩.

Note: This feature is available inWeb Workers.

TheWebGLRenderingContext.getProgramInfoLog returns the informationlog for the specifiedWebGLProgram object. It contains errors thatoccurred during failed linking or validation ofWebGLProgram objects.

Syntax

getProgramInfoLog(program)

Parameters

program: TheWebGLProgram to query.

Return value

A string that contains diagnostic messages, warning messages, andother information about the last linking or validation operation. When aWebGLProgram object is initially created, its information log will be astring of length 0.

Examples

Checking program errors

const program = gl.createProgram();// Attach pre-existing shadersgl.attachShader(program, vertexShader);gl.attachShader(program, fragmentShader);gl.linkProgram(program);gl.getProgramInfoLog(program);