You may know that Thea can handle sun pool caustics with its unbiased TR2. It was a sad thing though that TR1, a superb unbiased render engine, could not resolve sun pool caustics. For those that are not familiar with the subject, the so called "sun pool caustics" is a particularly difficult problem  to solve, using unbiased methods. This is why it has not been addressed by the vast majority of other commercial unbiased renderers.

We are very happy to present a solution to this problem, with TR1 being able now to resolve this lighting. This makes possible now to render exteriors with these visual cues present and faster than TR2.

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