Offscreen rendering opengl driver

For the most part, it wont make a difference whether you use a renderbuffer or a texture. The tr tile rendering library is an opengl utility library for doing tiled rendering. What are the difficulties with the pixmap approach. That are offscreen drawables as far as i know especially for rendering directly to offscreen memory. Qoffscreensurface should only be used to create opengl resources such as textures or framebuffer objects. Offscreen rendering through the native platform interface. Loads up an environment, attaches a viewer, loads a scene, and renders images using the advanced interface. As you will notice in the documentation, there is no argument to choose which buffer. To compile vtk or paraview for offscreen rendering through egl you will need. Tiled rendering is a technique for generating large images in pieces tiles. Offscreen rendering and the rendermethod attribute with version 0. Qoffscreensurface is intended to be used with qopenglcontext to allow rendering with opengl in an arbitrary thread without the need to create a qwindow. Even though the surface is typically renderable, the surfaces pixels are not accessible. I use functions which are part of the opengl standard which is supported by the installed driver.