WebGL2RenderingContext: getUniformBlockIndex() method
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2021.
Note: This feature is available in Web Workers.
The WebGL2RenderingContext.getUniformBlockIndex() method
of the WebGL 2 API retrieves the index of
a uniform block within a WebGLProgram.
Syntax
js
getUniformBlockIndex(program, uniformBlockName)
Parameters
program-
A
WebGLProgramcontaining the uniform block. uniformName-
A string specifying the name of the uniform block to whose index to retrieve.
Return value
A GLuint indicating the uniform block index.
Examples
js
// Assuming a shader with the following declaration:
// uniform UBOData {
// mat4 foo;
// } instanceName;
// use the block name, not the instance name:
const blockIndex = gl.getUniformBlockIndex(program, "UBOData");