2010 Khronos Group
glVertexAttribDivisor 3G
glVertexAttribDivisor modify the rate at which generic vertex attributes advance during instanced rendering

## C Specification

void `glVertexAttribDivisor` GLuint index GLuint divisor

## Parameters

index

  Specify the index of the generic vertex attribute.

divisor

  Specify the number of instances that will pass between updates of the generic attribute at slot index.

## Description

`glVertexAttribDivisor` modifies the rate at which generic vertex attributes advance when rendering multiple instances of primitives in a single draw call. If divisor is zero, the attribute at slot index advances once per vertex. If divisor is non-zero, the attribute advances once per divisor instances of the set(s) of vertices being rendered. An attribute is referred to as instanced if its `GL_VERTEX_ATTRIB_ARRAY_DIVISOR` value is non-zero.

index must be less than the value of `GL_MAX_VERTEX_ATTRIBS`.

## Notes

`glVertexAttribDivisor` is available only if the GL version is 3.3 or higher.

## Errors

`GL_INVALID_VALUE` is generated if index is greater than or equal to the value of `GL_MAX_VERTEX_ATTRIBS`.

## See Also

glVertexAttribPointer, glEnableVertexAttribArray, glDisableVertexAttribArray

## Copyright

Copyright 2010 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/.