OpenGL.GL.NV.parameter_buffer_object

OpenGL extension NV.parameter_buffer_object

This module customises the behaviour of the OpenGL.raw.GL.NV.parameter_buffer_object to provide a more Python-friendly API

Overview (from the spec)

This extension, in conjunction with NV_gpu_program4, provides a new type of program parameter than can be used as a constant during vertex, fragment, or geometry program execution. Each program target has a set of parameter buffer binding points to which buffer objects can be attached.

A vertex, fragment, or geometry program can read data from the attached buffer objects using a binding of the form "program.buffer[a][b]". This binding reads data from the buffer object attached to binding point <a>. The buffer object attached is treated either as an array of 32-bit words or an array of four-component vectors, and the binding above reads the array element numbered <b>.

The use of buffer objects allows applications to change large blocks of program parameters at once, simply by binding a new buffer object. It also provides a number of new ways to load parameter values, including readback from the frame buffer (EXT_pixel_buffer_object), transform feedback (NV_transform_feedback), buffer object loading functions such as MapBuffer and BufferData, as well as dedicated parameter buffer update functions provided by this extension.

The official definition of this extension is available here: http://www.opengl.org/registry/specs/NV/parameter_buffer_object.txt