![]() The Brute force + Light cache combination is used for GI, which should produce results comparable to radiosity methods (i.e. To ensure correctness of the results, the light meter creates its own internal instance of the V-Ray renderer to perform the calculations and any settings of the current 3ds Max production renderer are ignored. ![]() There are four baking passes - one to collect the main illuminance data, two more to determine the predominant direction of the lighting, and a fourth pass for the daylight factor. ![]() Internally, the light meter values are calculated in several passes using the texture baking mechanism of V-Ray. Higher values will be faster to calculate but may appear noisy. ![]() The precision of the result can be controlled with the Error tolerance parameter. Before results can be displayed in the viewport, the values for the light meter grid must be calculated either by pressing the Calculate button, or by calling the MaxScript calculate() method of the light meter (V-Ray does not automatically recalculate scene light meters during regular image rendering). ![]()
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