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
WebGLProgram
containing the uniform block. uniformName
- A
DOMString
specifying 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
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