diffrent results in vray RT gpu

V-Ray for 3ds Max V-Ray for 3ds Max :: Issues
1

Hi i started a small simple scene ,with one small vray plane light & a basic gray materials . & i was getting very diffrent results in Rt gpu mode than in cpu & final render.
after testing diffrent light source bigger vray light plane , rt gpu & cpu & final render were the same .
could it be a bug ?

2

It sounds like a bug. Can you attach the scene?

Best regards,
Vlado

3

Hi Vlado this the file
-scene.zip (57.7 KB)

4

Thanks; it seems to be because of the negative scaling of the light. Will make a note to fix this, but in the meantime, just make sure the scale on the light is +100 (you can rotate it to flip it over).

Best regards,
Vlado

5

If I scale the light positive and rotate it, I get the same result on the CPU and GPU (as production renderer so that I can use the light cache too).

Best regards,
Vlado

cpu1min.jpg
cpu1min.jpg1199×1199 217 KB

gpu1min.jpg
gpu1min.jpg1199×1199 136 KB

6

thank’s for your quick reply , it’s working well now i understood what went wrong :slight_smile: