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rendering to memory?

Started by DTMdan Mar 14, 2005 at 1:14 PM 1 replies 900+ views

Original Post

Mar 14, 2005 at 1:14 PM

Hi. I am making a DLL extension for a piece of 2D game coding software (called Fenix). My extension is a 3D eninge using opengl. At the moment I have it working by setting up opengl to take over the window. This of course disables Fenix's normal software drawing functions, which I don't want to do. However, Fenix has a buffer I could draw to (by the name of "background"). It consists of an array of 2 byte (16 bit) pixels. So, does anyone know how to setup opengl to render to this? I have heard of the possiblity of attaching a windows HBITMAP to a Device Context, but am not sure if a HBITMAP could be set up with the correct 16 bit format (without modifying the "background"), and whether that is what I need anyway... Can anyone help? Thanks :)

Gorax

Mar 16, 2005 at 9:42 AM

Sorry for the late reply (I seem to have missed this one). You could always render to a texture (there's a few tutorials out there on how to do this), and then convert it from a 24-bit colour image to your 16-bit one using whatever method you find that does the job you need it to do.

anist

Mar 16, 2005 at 3:57 PM

render to a bitmap. opengl can render to DIB's in windows. rude reference to google withheld, linky provided instead :P

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