So, I recently have begun trying to make my own Earth, as I have seen many people do before. I wanted to see what blender could handle though by making the highest resolution Earth possible.
So, being an Earth, it has multiple image layers:
Specularity Map - 15 MegaPixels
Is working great for water specularity
Cloud Map - 34 MegaPixels
Is of course made into an alpha. Put on a separate sphere for altitude change. Also has some contrast correction form original.
Bump Map - 223 MegaPixels
I’m having some problems with this one. If I use the super high resolution, the actual curves of the terrain look great, but because of the resolution, the depth of the color can’t be high enough, so it looks like a topographic map.
On the other hand, if I use a lower resolution image and let it interpolate the color depth the mountains and hills are smooth instead of topographic, but the curves of the terrain are jagged. Any help on bump/geometry mapping would be appreciated.
Terrain Map - 3732 MegaPixels
I managed to find a database of terrain images from NASA, and painstakingly stitched them together to a 3732 MegaPixel TIF image. (Saving the image took 2 hours) This is where blender failed. It would seem that blender cannot handle images over ~500 MegaPixels. It would crash instantly on importing the image and even thumbnail generation. So I lowered the resolution to 1/9th of the original (415 MegaPixels) and it works great now. (I submitted a bug report, but they solved it making blender just ignore images of that size)
Then I did a SSS atmosphere with some post compositing, and ended up with this. (I’m not done yet, this will be used in a later project of mine)
Non-Compressed Image HERE
All critique would be greatly appreciated