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  LWJGL questions  (Read 979 times)
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Offline javazoid

Junior Member




Where's Flender?


« Posted 2003-01-31 05:18:59 »

I have some (silly ?) questions aboug LWJGL:

- does it support transparent backgrounds (see my prevous topic about DTV) ?

- does it support 3D text like Java3D ?

- can I use Java2D to write over LWJGL buffers ?

- can I save single animation frames from LWJGL ?

- does it support field-rendering (I mean odd/even video fields) ?

Thanks a lot,

Javazoid (Mik)

Offline alexz

Senior Newbie




Java games rock!


« Reply #1 - Posted 2003-01-31 06:18:53 »

I can be wrong in some points but anyway...  Wink

Quote

- does it support transparent backgrounds (see my prevous topic about DTV) ?

It depends on the hardware... I believe that some cards allow rendering to texture with alpha channel nowadays.

Quote

- does it support 3D text like Java3D ?

No. LWJGL is a low-level API. Conserning graphics it's just OpenGL wrapper (you can think that graphics part of LWJGL simply means OpenGL). So the question could be: "does OpenGL support 3D text directly?". The answer is no but it's possible to provide this functionality on top of the library.

Quote

- can I use Java2D to write over LWJGL buffers ?

No. LWJGL has no connection with AWT. But you can use Java 2D to draw in a BufferedImage then use the pixels as a texture and draw textured quad to the buffer.

Quote

- can I save single animation frames from LWJGL ?

Yes, it's the same as for OpenGL. For instance, render your frame then grab the pixels by using glCopyPixels() and save 'em on disk in desired format.

Quote

- does it support field-rendering (I mean odd/even video fields) ?

Does OpenGL support them?  Wink

Note that LWJGL is a low-level API. It (OpenGL) has most of  necessary features for developing a video-editing software on top of it. At the moment there is no such software using LWJGL so you have a chance to be a pioneer in this field! Cool
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