   multiple images in one screen
  I don''t know how to say it right, my english isn''t very good, but i''ll hope you understand:How to show multiple openGL rendered images in one screen ? Rendered images are from different world, they aren''t just different viewpoints.I think this is done that way: render images to some buffer and then blit those buffers to screen. But i don''t know how to render to buffer. Or can it be done without buffers. If it cannot be done only with opengGL then can it be done with aid of Allegro and AllegroGL ? 
  I''m having a hard time figuring out what you really want, but perhaps scissor testing is what you''re looking for.This NeHe tutorial pretty well explains it (although there''s a lot of other stuff in that tutorial as well, so you will have to scan a little to find it).   ______________________________________________________________The Phoenix shall arise from the ashes...   ThunderHawk -- ¦þMySite______________________________________________________________ ;  i think he is maybe looking for something like this Here [edited by - MathewS on February 16, 2004 11:08:21 AM];  yeah, its bad to explain. but i''ll try this way:how to make 2 player game where first player screen is up and another screen is down in one monitor ? (like in racing sims).and my questions goes further: what to do then up and down screens doesn''t come from same world (track, cars, etc), but from completely different (for example: up is game itself and down is map).damn damn, i don''t have words to say it clearer :/ ;  That''s basically an issue of how your code is structured.  Once you draw the overworld, then you switch your drawing system (i.e. enable GL_SCISSOR_TESTING), draw whatever goes into the side screen, and then switch back to the original drawing system (disable GL_SCISSOR_TESTING) in preparation for the next frame.Oh, and if you''re interested in drawing this screen at an angle to the viewing plane, you should check out rendering to a texture or using the stencil buffer.   ______________________________________________________________The Phoenix shall arise from the ashes...   ThunderHawk -- ¦þMySite______________________________________________________________ ;  thanks, 42th lesson was just what i wanted. 