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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
gl.getProgramInfoLog(program);
Parameters
- program
- A
WebGLProgramto query.
Return value
A DOMString 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
var program = gl.createProgram(); // Attach pre-existing shaders gl.attachShader(program, vertexShader); gl.attachShader(program, fragmentShader); gl.linkProgram(program); gl.getProgramInfoLog(program);
Specifications
| Specification | Status | Comment |
|---|---|---|
| WebGL 1.0 The definition of 'getProgramInfoLog' in that specification. |
Recommendation | Initial definition. |
| OpenGL ES 2.0 The definition of 'glGetProgramInfoLog' 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 | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|---|
| Basic support | ? | 25 | 4.0 (2.0) | 1.0 | ? | 12 | 8.0 |