Piglit is a collection of automated tests for OpenGL and OpenCL implementations. The goal of Piglit is to help improve the quality of open source OpenGL and OpenCL drivers by providing developers with a simple means to perform regression tests. The original tests have been taken from - Glean ( http://glean.sourceforge.net/ ) and - Mesa ( https://www.mesa3d.org/ ) WWW: https://piglit.freedesktop.org/