Higher will slow the rendering as more samples need to be interpolated. Interp samples: 40% of your sub div figure. The number of samples is the square of this figure. The more Primary rays generated, the more accurate the indirect lighting estimate is. This light and colour information is averaged and returned to the camera. The rays then return along their original path and transfer the information to a hemisphere above the GI point. They then hit other objects in the scene and record the light and colour information at that point. When a GI ray hits a surface, rays are bounced in all directions from that point. In the image3 there is result of irradiance/brute force. My DMC image sampler is set to min/max 1/30, DMC sampler has adaptive 1 and noise tresh. Its a 3000 frame animation and its starts out with all of the lights on but with 0 intensity (vray light materials too), the lights are set up to turn on (get brighter) as the camera moves through the space to give a gradual feeling from moody to well lit. With brute force as secondary engine it looks like in the. The typcial flythrough settings i use with light cache and irradiance map just dont do it. Subdivisions: 50 – 60 exterior, 80 – 100 interior Irradiance map works fine with light cache. Min Rate: The lowest resolution of the Irradiance map.Īim for 3 passes, so if you choose -2, choose -5 for min. Set to -2 and raise to -1 if you need better definition in the shadows. We are looking for a resolution equivalent to about 1500 – 2000 pixels. Zero is full resolution, so 4000 pixels in this case. Max Rate: The maximum resolution of the irradiance map. Just remember that the Irradiance map subdivisions will also multiply. In simple scenes you can really ramp this number up, assuming your materials and lights have a low subdivision figure (8-16 or so). That is where the maximum image sample limit kicks in and stops it from endlessly sampling.Ī quick way to raise the lowest quality areas.Īn easy way to increase the quality of lights and glossy reflections in your scene. This is why Vray has a tough time with very high changes in brightness because it will never achieve this tolerance. 002 is telling Vray to keep shooting more samples and sub divide pixels until adjacent pixels are within this range. irradiance map, 306 sun parameters, 333335 Viewport, 307308 VRay Disc. This is the maximum allowed difference in pixel value on a floating point scale. Inscattered light intensity, 196 Instance Copy Map dialog, 292 Instance copy. Lower values will increase the quality by not allowing Vray to lower the subdivisions for materials and lights deemed low importance, (distant lights and objects, darker objects)

Irradiance map vray settings