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WebGLRenderingContext: getProgramInfoLog() method

The WebGLRenderingContext.getProgramInfoLog returns the information log for the specified WebGLProgram object. It contains errors that occurred during failed linking or validation of WebGLProgram objects.

Syntax

getProgramInfoLog(program)

Parameters

program: The WebGLProgram to query.

Return value

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

Examples

Checking program errors

const program = gl.createProgram();

// Attach pre-existing shaders
gl.attachShader(program, vertexShader);
gl.attachShader(program, fragmentShader);

gl.linkProgram(program);

gl.getProgramInfoLog(program);

Specifications

Specification
WebGL Specification # 5.14.9

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`getProgramInfoLog`	9	12	4	11	12	5.1	4.4.3	25	4	12	8	1.5