Blender & glow textures

Spacecrafts, buildings and other 3D asset creation
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Nyankosensei
Posts: 235
Joined: Wed Sep 11, 2013 8:03 pm

Blender & glow textures

Post by Nyankosensei »

i'm trying to export glow texture form blender for have shaders and a real effect of illumination but the image i export don't have a good resolution

Image

You can see all those rings on grey scale around objects

There's a way for export from blender a better image or a fast way for fix it with gimp ?
bszlrd
Posts: 1084
Joined: Mon Jul 01, 2013 3:25 pm
Location: Budapest HU

Re: Blender & glow textures

Post by bszlrd »

They are there because the limitations of a 8bit/channel png and also the limitations of our monitors. If you check the RGB values, you will see that all three values will decrease only by 1 for each band, and there's only 256 step of gray.
Practically there's no room for finer gradients in the 24 bit color space (8 bit / channel). You can't even blur them after rendering it.
You could try setting it to 16bit/channel png and on the Output panel in the render settings, and turn up dithering in the post processing panel. It will help a bit, but not much.
I don't know if Pioneer supports 16bit/channel png's. The file size will be at least double, which might be a problem.
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