6 modules - PI-VR GmbH

6.4 Renderingslightly which significantly increases the rendering performance. Whileyou don’t recognize the quality loss in most situations, there may be scenesthat may suffer from heavy noise when this feature is turned on. In suchscenes you may need to disable the optimization to get a clean renderresult.• BRDF Behaviour: The new BRDF model conserves energy better. Theweighting of the diffuse/glossy/specular layers should take into accountthe glossy/specular colors additionally to the fresnel reflectivity so that theresult does not show dark edges when the glossy color to black, but insteaddisplays a purely diffuse material. This does also allow better finetuningof the specular reflections. For compatibility reasons, the old BRDFmodel can still be chosen from the following list.· Ver. 2014 and above· Ver. 6.0x and below• Number of CPU Cores: Sometimes you may want to limit the number ofraytracing cores VRED uses to have some processing power left for otherapplications. This settings is a runtime only setting and it does not influenceany cluster machines.» Raytracing Quality» Illumination Mode: VRED has various illumination modes for rendering in raytracing.You may choose different illumination modes for interactive renderingand still frame rendering. This allows to work in a precomputed mode for fastinteraction with the scene and automatically switching to full global illuminationfor still frame rendering. Four modes are available:• CPU Rasterization: While the render product is OpenGL-like, the CPU Rasterizationfeature allows to import and visualize huge datasets. CPU Rasterizationdoes not compute direct reflection, nor does it compute refractionor any other sophisticated visual effect.• Precomputed Illumination: The precomputed illumination mode is comparableto VRED OpenGL rendering mode. It uses precomputed ambient199