2.40.01 Fun!

[Alan Iglesias]

Just having some fun with the latest sevice pack and RT/GPU. The below shot shows the Vray Car Paint material on the Z. The noise on the ground was a pre-made bitmap, but I was able to modify it greatly with Color Correct to get the reflection and glossiness maps I was looking for. Messing with Mix Maps now...

-Alan

[vlado]

Very nice Use the CUDA engine though, it's much faster...

Best regards,
Vlado

[Alan Iglesias]

Very nice Use the CUDA engine though, it's much faster...

Best regards,
Vlado

Sure enough, using CUDA the benchmark now renders about 14% faster than it did in 2.30.01. Nice performance increase!

-Alan

[Morbid Angel]

Im wondering if the blend material is properly working now...?

[vlado]

Im wondering if the blend material is properly working now...?

It works as expected from my tests; both on the CPU and the GPU (if you don't use the "Additive" mode at any rate).

Best regards,
Vlado

[Alan Iglesias]

Im wondering if the blend material is properly working now...?

I have also given it an hour or so of basic testing in GPU, and it's worked well so far, Dmitry.

-Alan

[Jiri.Matys]

I made some tests of OpenGL and CUDA in VRay 2.30 and speed was absolutelly the same. So there is CUDA speed perfoarmance in 2.40?

[vlado]

I made some tests of OpenGL and CUDA in VRay 2.30 and speed was absolutelly the same.

This was the case for V-Ray 2.30, but it's not the case for V-Ray 2.40. Our GPU code is now way more complex than before and the latest nVidia OpenCL driver needs about 80 GB of RAM (!!!) to compile it with full optimizations due to a bug in the compiler. We could not release the code in this state, so we had to find other ways to get it to compile on nVidia hardware, and unfortunately that meant slowing it down.

So there is CUDA speed perfoarmance in 2.40?

Yes, the CUDA engine is now faster compared to the 2.30 release.

Best regards,
Vlado

[super gnu]

so.. openCL eh? crippled on AMD and now crippled on Nvidia too. lookin hot.

[eyepiz]

Looks like the light plane bugs are gone in GPU!...Still no Vray 2 sided materials or fastSSS2 shaders.

[Alan Iglesias]

2-sided materials should work fine, Eric...check it out...



-Alan

[vlado]

Still no Vray 2 sided materials or fastSSS2 shaders.

As Alan pointed out, the 2-sided material works fine for most simple situations. For this release we were focused on instancing and more complex texture map trees; render elements, volumetric shading and the sss2 shader are next in line.

Best regards,
Vlado

[vlado]

so.. openCL eh? crippled on AMD and now crippled on Nvidia too. lookin hot.

Yeah... that didn't work out too well. There is still a spark of hope for AMD though.

Best regards,
Vlado

[Alan Iglesias]

... volumetric shading and the sss2 shader are next in line...

He he...yeah, volumetric shading on the GPU...this I'm dying to see!

-Alan

[eyepiz]

Hmm.... no Luck with a lamp shader...I not sure whats going on.