week3-Day 2 / normal map day
1. had to optimized my UV´s,for more space at the edges.
2. I probably should change the interpolation to cubic while scaling.
Someone told me that he scaled down in two steps. 8k- to 4k to 1k to get a decent result.
Haven´t tried it, but interesting idea.
3. I find this course very helpful for normal map baking. Normal Map Baking for Games
Now I found this: 5 Must Know Tips
partly the same tips but especially interesting: ” Problem 3: Which file format / settings are best to use to save the bump / normal maps externally? “
There is a comparison of the file sizes with explanation
(all examples are for a 1024 x 1024 texture size)
8 bit png = 117 KB
16 bit png (default 15% compression) = 1,080 KB
16 bit png (0% compression) = 6,156 KB
16 bit png (100% compression) = 792 KB
32 bit (Full float) OpenEXR (no codec) = 12,305 KB (Largest!)
32 bit (Full float) OpenEXR (Zip lossless codec) = 4,350 KB (Smallest lossless option)
32 bit (Full float) OpenEXR (Pxr24 lossy codec) = 637 KB (Smallest lossy option! Not including 8 bit)
Kent said we should save the NORMAL maps as 16bit png / seems that the compression could make a differnce in file size.
Now I`ll see how far I can get together. Despite testing, I have to have finished normal maps at some point 😉
