libgpcogl - General Purpose Computation on OpenGL

Introduction

This minilib provides an 2D-array-oriented API to do arbitrary calculations on the GPU, running programs written in the OpenGL shader language. The scope is similar to opencl's, but this method does not need compute kernels on the GPU, which lowers GPU requirements: any desktop OpenGL starting from version 3.0 (and the rectangle texture extension) is usable.

Supported array cell data types are scalar 32 bit float, scalar signed 32 bit int, scalar unsigned 32 bit int and 2-3-4 long vectors of them.

Multiple OpenGL interface backends (GLI) are provided:

glut: should be portable but on Linux/BSD it requires X11
noxgl: runs on Linux, no X11 required (but does not work with every driver)

License: LGPL2.1+ for the lib, CC0 for the examples.

Downloads

Development version is accessible from version control: svn://svn.repo.hu/libgpcogl/trunk

Stable source releases: tarballs.

Documentation ToC

Theory of operation
Motivation and limitations
Examples
Choosing and using a GL Interface lib
Developing shader programs (the GPU side)
Advanced feature (require higher OpenGL version)
API reference (the CPU side)
glossary
Authors & contact

Thanks

This project is made possible by

(nlnet NGI Entrust in 2023).

Thanks to Laci, Aron and Nicklas for providing hardware (PC and GPU) for testing.