I am using two OpenGL contexts in my application. The first one is used to render data, the second one to background load and generate VBOs and textures. When my loading context generates a VBO and...

I would like to use OpenGL (version 1.5) to render images to memory, without displaying them on screen (I can e.g. just save them as image files or render them as ASCII in terminal). I do not want ...

I am creating an application using SDL2 & OpenGL, and it worked fine on 3 different computers. But on another computer (an updated arch linux), it doesn't, and it crashes with this error: Open...

I have a sub-classed CAOpenGLLayer class which overrides drawInCGLContext there I draw a rectangle with OpenGL. The CAOpenGLLayer is added to a CALayer and shown. So when I would like to draw some...

I want to render my scene in one thread and then blit the result in window owned by another thread. To avoid reading the framebuffer back to cpu memory, I would like to use a framebuffer object. So...