GLAPI/glVertexAttribDivisor

From OpenGL.org
Jump to: navigation, search
glVertexAttribDivisor
Core in version 4.4
Core since version 3.3
ARB extension ARB_instanced_arrays

glVertexAttribDivisor: modify the rate at which generic vertex attributes advance during instanced rendering

Function Definition

 void glVertexAttribDivisor(GLuint index​, GLuint divisor​);
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​.

GL_INVALID_OPERATION​ is generated if no vertex array object is bound.

See Also

glBindVertexArray, glVertexAttribPointer, glEnableVertexAttribArray, glVertexBindingDivisor

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/.