yes, its the latest maxwell version.
strong bump is sometimes needed, so i rendered this to show if maxwell can handle this.

i can upload the mr rendering later this day, rendertime was about 6,5 hours with glossi walls, but without glossis on the board.

this is the mr rendering. phys sun/sky with brute force ibl and brute force ip's. no portal lights or other additionel light sources. 6 bounces with 4 passes for ip's, 100k importons. ibl quality with 0,5 and 50 rays for ip's.




this is the maxwell rendering after 20hours and 21 minutes. as you can see, there is some noise under the tables that should be cleaned up with additionel sampling levels.
compared to the mr render, its a bit sharper because of the aa filter in mr. i will render another one overnight so you can better compare. of course the maxwell render has no indirekt bounce limit like the mr render, so its a bit hard to compare. i will also try to match the glossies and bump values of the maxwell render.

Thanks for posting that, I'm testing this scene too and I think the user normals need to be deleted first and the smoothing angle lowered for some objects or the shading will look pretty bad. Also I'm not getting the aliasing by the window frame as in your render....strange. I'll post a render soon.

The Mental Ray render besides not having enough bounces also is overall noisier than the Maxwell one, no? (the walls) Question is what would it take to make it cleaner and with better AA?

i corrected the noise, had to increase the sampling a bit, its because of the glossy character of the wall shader (which the maxwell render does not have). i render this overnight and will see how long it took.
the noise itself in the old render is smoother compared to maxwell which has a "firefly" character, but the actual mr render is way better.

the classroom needs alot of tuning, thats right, took some time to get it to render clean. some geo problems are in, but its good enough for testing.

this is mr and took 12 hours. its now noisefree, cleaner then you would need it for animation rendering.
importon density of 0,5 and 6 indirect passes. lighting is a bit different as you can see, tryed to match the sun position of the maxwell render. used wide glossis everythere.
i also used fstop of 5,6 instead of 8 in the last render to make the darker parts brighter for better noise judging.
unified sampling with min1/max300 and quality of 12, 1 local samples for all shaders and the sunlight. ip samples 50 ans ibl quality 0.5, like in the first render.


in general, the classroom uses a lot of indirect lighting, this means you have to render more samples as you would need for more direct lighting like outdoors. so i am sure maxwell and mr will render faster with such a lighting setup.

for maxwell, does it use the linear workflow automatic? have i degamma all 8 bit inputs by hand like in mr? i wonder of this because the textures in maxwell renders are alot darker so i ask myself about that point.
would also be interesting to see some more maxwell renders and the rendertime/machine specs to compare quality/speed.

Kzin, could you please share the scene? cause i'm havin an hard time to use IBL or IP with ctrl ghost because it doesnt update the buffer so its a total mess..
I'm so willing to take a look at your setup if you are so kind.

saturn explains this some time ago, because its a geo shader it does not update automaticly, so if you change a value in the shader, you have to refresh the region twice.
and also of this, if you render an animation, the first frame is not showing the ibl lighting. i know its not a good way so lets hope ad will implement all this and the new ibl features in si2013.