This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The WebGL2RenderingContext.getUniformBlockIndex() method of the WebGL 2 API retrieves the index of a uniform block within a WebGLProgram.
Syntax
GLuint gl.getUniformBlockIndex(program, uniformBlockName);
Parameters
program- A
WebGLProgramcontaining the uniform block. uniformName- A
DOMStringspecifying the name of the uniform block to whose index to retrieve.
Return value
A GLuint indicating the uniform block index.
Examples
// Assuming a shader with the following declaration:
// uniform UBOData {
// mat4 foo;
// } instanceName;
// use the block name, not the instance name:
var blockIndex = gl.getUniformBlockIndex(program, 'UBOData');
Specifications
| Specification | Status | Comment |
|---|---|---|
| WebGL 2.0 The definition of 'getUniformBlockIndex' in that specification. |
Editor's Draft | Initial definition for WebGL. |
| OpenGL ES 3.0 The definition of 'glGetUniformBlockIndex' in that specification. |
Standard | Man page of the (similar) OpenGL API. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | 56 | No | 51 | No | 43 | No |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | 58 | 58 | No | 51 | 43 | No | 7.0 |