andrewc

andrewc

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Recent Forum Posts

Caustic light waring Nov. 19, 2013, 2:35 p.m.

This warning existed in some earlier builds of H13 but it should be fixed in the latest build. Could you verify? If it's still broken, post your .hip file and I'll take a look.

Andrew

Embree - Photo-Realistic Ray Tracing Kernels Aug. 3, 2013, 1:18 p.m.

Mantra 12.5's BVH uses a similar 4-way SIMD intersection algorithm to Embree's SSE incoherent ray intersector - when it was added to mantra, comparing it to embree showed it was pretty close performance-wise. I know Embree was somewhat limited at the time (only triangle intersections, and no motion blur) but it seems they may have removed some of these limitations in the recent release. We'll definitely be watching this project to see if there are more techniques that can help mantra rendering.

Andrew

Shader calls for built-in otl *.vex file July 8, 2013, 2:09 p.m.

H12.5 was recently updated to allow “import” to also find shaders that exist in the opdef path - so if you have the otl loaded, “import” should find it. This currently doesn't work with cvex_bsdf, though this may be supported in a future build.

Andrew