This comes up a lot. To me it's a major ommission.
Currently you have to render to the backbuffer and then do a copyrect to the texture buffer. Cumbersome and slow.
Another problem is you are limited by the size of the backbuffer. In sticky balls I wanted to do a shadow texture of 512x512 but this didn't work if the user set the game to run at 640x480.
I think it would be better if blitz had a proper render to texture feature; Even if on some (most)cards it does it the slow way (behind the scenes).
Currently you have to render to the backbuffer and then do a copyrect to the texture buffer. Cumbersome and slow.
Another problem is you are limited by the size of the backbuffer. In sticky balls I wanted to do a shadow texture of 512x512 but this didn't work if the user set the game to run at 640x480.
I think it would be better if blitz had a proper render to texture feature; Even if on some (most)cards it does it the slow way (behind the scenes).