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multisampling vs offscreen context

Started by Peti29 Aug 27, 2008 at 10:17 AM 3 replies 1.2k views

Original Post

Aug 27, 2008 at 10:17 AM

Hi! Is it possible to get an offscreen rendering context (WGL_DRAW_TO_BITMAP_ARB) with multisampling (WGL_SAMPLE_BUFFERS_ARB) enabled? Because I don't seem to succeed no matter how I try to tweak the attributes (WGL_ACCELERATION_ARB, WGL_DEPTH_BITS_ARB, WGL_DOUBLE_BUFFER_ARB, WGL_SWAP_METHOD_ARB)... Thx

Peti29

Aug 28, 2008 at 12:19 PM

Pls! Can anyone help me with this? Is it flat out impossible to draw in multisampled way to an offscreen OpenGL rendering context (i.e. stated in some specs somewhere which I didn't find)? Or is it theoretically possible but the current implementations tend to not support it? Or is it commonly used just I'm doing sg wrong?

Thx, in advance

sprite_hound

Aug 28, 2008 at 3:27 PM

Quote:
Original post by Peti29
Pls! Can anyone help me with this? Is it flat out impossible to draw in multisampled way to an offscreen OpenGL rendering context (i.e. stated in some specs somewhere which I didn't find)? Or is it theoretically possible but the current implementations tend to not support it? Or is it commonly used just I'm doing sg wrong?

Thx, in advance

Perhaps I'm not understanding exactly what it is you're after, but: EXT_framebuffer_multisample?

Peti29

Aug 28, 2008 at 6:13 PM

No, just plain offscreen context (i.e. PFD_DRAW_TO_BITMAP). But indeed, I'm begining to think that FBO is the only way to go...

V-man

Aug 28, 2008 at 6:57 PM

PFD_DRAW_TO_BITMAP gives the standard Windows software renderer, which supports GL 1.1. Yes, use FBOs, which is the current standard.

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