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WebGLRenderingContext.getShaderInfoLog

The WebGLRenderingContext.getShaderInfoLog returns the information log for the specified WebGLShader object. It contains warnings, debugging and compile information.

Syntax

gl.getShaderInfoLog(shader);

Parameters

shader
A WebGLShader to query.

Return value

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

Examples

Checking compilation errors

/* load shader source code. */
gl.shaderSource(shader, shaderCode);

/* compile shader source code. */
gl.compileShader(shader);

var error = gl.getShaderInfoLog(shader);

if (error.length > 0) {
  throw error;
}

Specifications

Specification Status Comment
WebGL 1.0
The definition of 'getShaderInfoLog' in that specification.
Recommendation Initial definition.
OpenGL ES 2.0
The definition of 'glGetShaderInfoLog' in that specification.
Standard Man page of the OpenGL API.

Browser compatibility

Feature Chrome Edge Firefox Internet Explorer Opera Safari
Basic support 9 12 4 11 12 5.1
Feature Android webview Chrome for Android Edge mobile Firefox for Android IE mobile Opera Android iOS Safari
Basic support Yes 25 Yes Yes 11 12 8.1

See also

© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/getShaderInfoLog