ompf2.com

Here: https://www.youtube.com/watch?v=yaK1e59-oAA it suggests that RT is currently a software feature, but that future GPUs will have fixed-function hardware. ("..the next generation of AMD and Nvidia will have hardware to speed this up.."). This is the most important takeaway IMO.

I think it is required that emitting particles should not scatter light I'm not quite sure if I understand how you come to this assumption and if I totally understand your question, but I don't see why particles that emit light shouldn't also scatter light. However, the mental model behind radiance...

I don't quite understand the question: doesn't the first term refer to a particle density at an integration position x that emits radiance L_e in viewing direction w, and that the particle density absorbs radiance by w.r.t. sigma_a(x)? The emitted radiance is not proportional to the absorption, but ...

Here's the (extended) AO results from the SEARIS paper (https://szellmann.github.io), along with a script to run the benchmark. Results for interesting platforms (CPU,GPU) not listed yet are highly welcome!

Going to talk about Visionaray at SEARIS (http://www.searis.net), which is a workshop colocated with IEEE VR.

Check out this teaser video: https://youtu.be/bhhwEO4KWII

This here paper btw. uses quadrics to project 3-D ellipsoids to 2-D: https://pdfs.semanticscholar.org/df2e/0 ... b231e6.pdf

Here's an explanation of how to build up the 4x4 matrix for several quadric types: https://www.siggraph.org/education/materials/HyperGraph/raytrace/rtinter4.htm I believe that Glassner's 1980's book "Introduction to Ray Tracing" also has a paragraph on this. There's a ray/quadric implement...

It's christmas holidays, and so I had a little fun compiling Visionaray for my new Raspberry PI 3: https://youtu.be/7bJTEmdlT2Y I haven't done anything special but applying some tiny compile fixes for this architecture, so there's no optimizations yet. I'm just porting the SIMD math lib to ARM NEON....

I used tiles/bricks, used morton curves and my texturing functions also support SoA access w/ SSE and AVX. Of course the outcome of the tests depends on overall coherence. Baseline was that linear filtering had a significant impact when texturing was emulated, while there was virtually no difference...

In my personal experience the __global char* approach is very fast even if it's not hardware accelerated. I'm curious, what difference in latency do you actually observe when comparing nearest neighbor vs. linear filtering. My rt lib has a dedicated CPU API where you can call texture access "i...