Frustum culling using compute shaders
In this recipe, we will show how to do frustum culling using the GPU and compute shaders.
In the world of real-time rendering, efficient rendering is key to achieving smooth performance and high-quality visuals. One of the most widely used techniques to optimize rendering is frustum culling. Frustum culling is a process that improves rendering speed by ignoring or culling objects that are not visible within the camera’s FOV, or frustum. The following diagram demonstrates it visually:
Figure 3.8 – Frustum culling works by ignoring objects that fall outside of the camera’s view (the frustum)
Frustum culling works by testing each object in the scene to see if it lies within the camera’s frustum. If an object is entirely outside the frustum, it gets culled; that is, it’s not drawn. This can significantly reduce the number of primitives that need to be drawn. Traditionally, culling...
