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• shadowRadius - Can be used to make simple light sources like omni, spot, direct behave as area lights, casting soft shadows.
• intensity (intensity_tex) - Multiplier for the intensity of the light.
• invisible - False by default. Enable to make the area light invisible to the camera. This includes the back side of rectangle lights for example.
• units - Physical units for the intensity of photometric lights. Possible values are: 0 - default, 1 - lumens, 2 - lm/m/m/sr, 3 - Watts, 4 - W/m/m/sr

The rectangle, mesh and dome lights can be textured. Keep in mind that the texture files are re-sampled at a resolution controlled by a tex_resolution parameter which has a default value of 512 for dome and rectangle and 256 for mesh lights. So if the light texture looks too pixelated, especially on the dome environment, try increasing this resolution. This will of course increase memory usage and render time slightly.

4. Creating geometry

4.1. The Node plugin

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Most filters have just one size parameter for the kernel radius. Catmull-Rom has no parameters. The available filters are:

• FilterBox - All samples within a box with sides 2*size are taken with equal weight.
• FilterArea - All samples within a circle with radius size are taken with equal weight.
• FilterTriangle - Sample weight falls off as a triangular function of off-center distance.
• FilterGaussian - The classical blur filter.
• FilterSinc - Less blurry low-pass filter. See Wikipedia.
• FilterLanczos (currently default in V-Ray for 3dsMax and Maya) - See Wikipedia.
• FilterCatmullRom - A cubic edge-enhancing filter.
• FilterCookVariable
• FilterMitNet - Mitchell-Netravali filter. It has additional blur and ringing parameters.

See AntialiasingFilters or AntialiasingFilters for more info.

6.3. Global illumination

SettingsDMCSampler - use_local_subdivs=0

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