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What does parallax occlusion do?
Parallax occlusion mapping (POM) is an enhancement of the parallax mapping technique. Parallax occlusion mapping is used to procedurally create 3D definition in textured surfaces, using a displacement map (similar to a topography map) instead of through the generation of new geometry.
How does parallax occlusion mapping work?
Parallax Occlusion Mapping, or POM for short, works by taking iterative steps along the height field checking for intersections. In order to be able to check the ray intersections with the heightfield, the camera ray must first be transformed into the tangent space of the texture coordinates.
What is occlusion mapping?
The occlusion map is used to provide information about which areas of the model should receive high or low indirect lighting. An occlusion map is a greyscale image, with white indicating areas that should receive full indirect lighting, and black indicating no indirect lighting.
What is Parallax in GPU?
Q What is the parallax (POM) GPU benchmark? A A measure of a GPUs ability to render detailed surfaces with shadows via POM. This benchmark measures a GPUs ability to perform parallax occlusion mapping which employs per-pixel ray-tracing for dynamic lighting of surfaces in real-time.
What is parallax occlusion mapping quality?
Parallax occlusion mapping is a technique that reduces a geometric model’s complexity by encoding surface detail information in a texture. When the model is rendered, the surface details are reconstructed in the pixel shader from the height-map texture information.
How do you use occlusion culling in unity?
Unity loads occlusion culling data into memory at runtime. You must ensure that you have sufficient memory to load this data. Occlusion culling works best in Scenes where small, well-defined areas are clearly separated from one another by solid GameObjects. A common example is rooms connected by corridors.