I'm reading the Occlusion Culling section in Real-Time Rendering 3rd Edition and I couldn't understand how it works. Some questions: How does having a "Z-pyramid" contribute? Why do we need multi...

I have been grappling with the Gribb/Hartmann method of extracting the Frustum planes for some time now, with little success. I want to build a camera view-frustum to cull my scene. I am working wi...

I'm currently working with upgrading and restructuring an OpenGL render engine. The engine is used for visualising large scenes of architectural data (buildings with interior), and the amount of ob...

Suppose I have a 3D model: The model is given in the form of vertices, faces (all triangles) and normal vectors. The model may have holes and/or transparent parts. For an arbitrarily placed lig...

I'm making a simple voxel engine (think Minecraft) and am currently at the stage of getting rid of occluded faces to gain some precious fps. I'm not very experimented in OpenGL and do not quite und...