About the restriction of drawingImages. Have you tried to use the enableTx and disableTex that are stricted in the GLMax2D?
I did have a lil look, but it didnt work... till now! :/. I'll test it out a bit more and update the module (i'll try and make it so you dont have to change offical mods). Then how are you rendering to a texture without using an extension? Is it really a texture in memory or is it basically rendering to a locked image pixmap in main memory?
Its done using glCopyTexImage2D, I might change it to glCopyTexSubImage2D because I just tried some test on the old laptop and it seemed a lot faster. I'm going to have a read about the differeance's and do some tests using each method. To be honest, the render to texture was an after thought which I only put in to day, havent had much time to try it out fully.
your examples are very well explained!
Thanks, I pride my self on it.