Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] Bug Reporting => Topic started by: lollolo on 2021-04-05, 19:29:46

Title: Slowdown when using BumpMap
Post by: lollolo on 2021-04-05, 19:29:46

Hi

I'm not sure if this is connected to the latest daily, threadripper processor or something else.
When I render something with a material applied that includes bump map, my CPU is using less than 100% of its power (depends on scene, in this case less than 50%)
Noise in bump slot renders fine, as well as normal map.

It happened in every scene I opened today.

Win 10
R20
Latest daily

Title: Re: Slowdown when using BumpMap
Post by: mmarcotic on 2021-04-06, 12:23:34

Hello,

just to make sure we're on the same page:
A) - texture (e.g. noise) placed directly in the bump channel; rendering at sub 100% CPU usage
B) - texture (e.g. normal bitmap) placed under Corona Normal, which is then placed in the bump channel; rendering at 100% CPU usage

Is this correct?

Thanks,
Jan

Title: Re: Slowdown when using BumpMap
Post by: lollolo on 2021-04-06, 12:55:29

Hi Jan

I did some more testing.

Texture or native C4D stuff like fresnel-shader, color-shader or all other C4D shaders I tested (except noise) in bump slot = less than 100% CPU usage. (in some cases around 70%, sometimes 30%)
Noise or Corona normal-shader + normal map in bump slot = 100% CPU usage.

Thanks!