This is a simple scene just a plane and a skylight.
The only thing is the scene scale is quite large (not sure if this is contributing to the problem.
Renders normally but when i put it to render to texture, I get strange blotches all over, I am using Brute force GI. I tested it without GI the blotches go away. But with GI they appear again, I tried all sort of settings and different GI methods they just wont go away.
You can find image comparisons below (I upped the contrast a bit for you to see) and the Max file attached below.
Update: I was getting a warning that the object was too far from world origin, so I zero’d that out, the artifacts seem to have disappeared for now. I will do some more tests. But still weird that it seems to render fine in normal mode yet Render to texture suffers.
For anyone who wishes to know: The problem turned out to be the scale after all. After a certain scene scale Render to Texture goes crazy, even though it is real world scale I have to scale down my scene by 98% and redo most of the lights in order for Render to Texture and GI to give smooth results.
Same two objects in the scene one is normal size and the other simply scaled down, just select each and go to Render to Texture for a test render comparison, you’ll notice the problem.
