Incorrect AO/Normal Baking in 3Ds Max
Hi artists,
i am recreating modular building from crysis 2.
I have some problem with baking AO and Normals maps.
I attached one example. The stairs. In attachment there are screen shot from my work.
I make High poly, then Low poly model.
Then i UV unvrawp the Low poly.
Then i put on projection modifier and setup it for baking. You can see setup on my screen shots.
But i generates ugly maps. What happend? How to do it correctly? It should be working but i doesnt.
Can you help me pls?
i am recreating modular building from crysis 2.
I have some problem with baking AO and Normals maps.
I attached one example. The stairs. In attachment there are screen shot from my work.
I make High poly, then Low poly model.
Then i UV unvrawp the Low poly.
Then i put on projection modifier and setup it for baking. You can see setup on my screen shots.
But i generates ugly maps. What happend? How to do it correctly? It should be working but i doesnt.
Can you help me pls?
Replies
Here is my workflow, i dont know waht is wrong. I learnt it on Digital Tutors.
Blockout - HighPoly - LowPoly - UVunvrap LowPoly - Bake HP/LP phase - Texturing.
For now i can proceed to texturing because of baking part.
I tried to bake it with out any smoothing, and still same problem.
How can i attach max file? When i click on upload button it says invalid file format.
http://d01.megashares.com/dl/uIwnmfa/Stairs.max
or
http://ulozto.cz/xdSNoiTk/stairs-max
if its not working ( big yellow button STAHNOUT)
1. just create stairs mesh, unwrap it - normal mapping and leave it. Bake AO/Normals
Result: Where steps meet each other, there is no visual information. I looks like baking doesnt like sharp edges
Test 2.
Same geometry, but i conect UV islands as much as possible.
Result: Better visual appearence, but still sharp edges are black. In next test i tried to add more geometry to sharp corners.
Test 3.
Chamfer edges, 1 segment.
It looks better
Test 4.
Chamfer edges, 2 segments
Better than test 3. But still not good enough.
Lesson learnt: When you bake HighPoly with smooth sharp edges to LowPoly , you need to add more geometry to Low Poly.
But there is one question. I attached picture from Gears of War 2. You can see steps in left bottom corner. THe low poly version is few polygons with sharp edges, but how did they bake it?
2. bake using a projection cage.
Every lerning video or book never told anything about Smoothing groups. They just unvrap things and bake it. Is that so importatnt?
One UV island is problem? i thought that is better than many uv isladns. I tried use more islads, but same result. Look at screens above
Here is my question: How do i create AO and Normals map from box with smooth edges and make a texture? Any idea?
It is same problem with stairs. How do you do that? For more complex mesh like the one i add in attachment?
Thank you.
Lesson learnt: For baking texture maps turn OFF Force 2-sided. I spend 4 days to find it and Kubajaniak help me a lot.
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