by paride4331 » Thu Nov 02, 2023 3:27 pm
paride4331
Thu Nov 02, 2023 3:27 pm
Hi Rik,
Considering the characteristics of the analytic lights (which I'll describe at the bottom), I also achieve greater cleanliness in PT (Path Tracing). You can see it by comparing the noise layer, with a saving, in this case, of two minutes, for example.
Analytic light primitives offer a fast approximation of direct light from large direct light sources on diffuse or glossy materials. Every sample the complete contribution is estimated, taking into account the roughness of the material and the shape of the light source. It is important to note that there is currently a maximum of 8 supported in the scene.
The primitives Disk, Sphere, Tube and Quad Light are similar to mesh lights but have custom low noise light sampling. The direct lighting for up to 8 analytic lights is calculated at once, allowing fast navigation with noise free direct light even at 1 sample per pixel.
Regards
Paride
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