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 messages

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

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

var message = gl.getShaderInfoLog(shader);

if (message.length > 0) {
  /* message may be an error or a warning */
  throw message;
}

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

BCD tables only load in the browser

See also