WebGLRenderingContext.getShaderInfoLog()
The WebGLRenderingContext.getShaderInfoLog returns the information log for the specified WebGLShader
object. It contains warnings, debugging and compile information.
Syntax
JavaScript
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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
JavaScript
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/* 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 (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 9 | 12 | 4.0 (2.0) | 11 | 12 | 5.1 |
Feature | Android | Chrome for Android | Edge | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|---|
Basic support | ? | 25 | (Yes) | 4.0 (2.0) | 1.0 | ? | 12 | 8.0 |
See also
WebGLRenderingContext.getShaderParameter()
– used withgl.COMPILE_STATUS
to check for a failed compile.WebGLRenderingContext.getError()
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/webglrenderingcontext/getshaderinfolog