[GEM-dev] mipmapping and pix_snap2tex and GEMgl*

[Claude Heiland-Allen]

Hi!

I've got a little patch that generates a fractal using texture feedback. 
  It looks really bad if I don't enable mipmapping (texture quality 2), 
but pix_snap2tex doesn't regenerate the mipmaps.  I hacked my local Gem 
to glGenerateMipmap(GL_TEXTURE_2D) after snapping, but this has some issues:

* maintaining local patches across several machines is annoy
* glGenerateMipmap is wasteful if mipmaps are not being used

The second issue makes me think the simplest solution would be a new 
object, perhaps GEMglGenerateMipmap, that I could put directly after 
pix_snap2tex to make it work.  This would defer the problem to the patch 
level, an automagic system to track when mipmaps need to be regenerated 
would be a lot more work and probably break some bizarro use cases where 
mipmaps shouldn't be regenerated.

Thoughts?


Claude
-- 
https://mathr.co.uk