riley1389 wrote:So I'm trying out 3.8 and I can definitely see that there's work to be done.
Jump ahead and try the latest Indigo 3.8.3 version
since there has been some fixes & speedups done since then!
riley1389 wrote:Can't render my scene with GPU acceleration enabled (OpenCL-AMD Radeon R9 290) (Latest stable graphics driver: 14.3)
there is 1 14.4 WHQL driver, and if that doesn't work try the 14.6 beta: http://support.amd.com/de-de/download/d ... t-packages
BTW: Can you monitor your GPU RAM while trying to start the render?
riley1389 wrote:So what I can conclude from my own findings, is that Indigo 3.8, as it stands now, brings a massive improvement to CPU only samples per pixel processing; however, at least in my situation, there is a much less significant improvement for the samples per second, (that being said, it's still an improvement.)
The devs enhance Indigo in multiple ways over the versions, comparing only the SPS is a bad idea here, since not only the sample count, but also the sample quality is important! Material enhnacements maybe don't strike in higher SPS (maybe even slower!) but in less noise in the same rendertime!
Check this example of 3.8.2 vs 3.8.3, where the wooden phong material renders way better:
http://www.indigorenderer.com/forum/vie ... 79#p127179
riley1389 wrote:Unfortunately, without my scene being able to, as of yet, use GPU acceleration in 3.8 without it crashing immediately, Indigo 3.6 with GPU acceleration, in my case, is the far superior option. But I am definitely super excited to see the optimizations the stable release brings to GPU acceleration front and OpenCL's potential!
Lets hope the OpenCL renderer gets some more love in the future, until then for you its important to use the latest (beta) drivers with your quite new GPU architecture!
Thanks a lot for the Bugreport and the detailed information!
If you still have issues with your scene you should consider to upload it for the devs to test it and hopefully find & fix the issue :)