glCopyPixels and MultiSampling

New Message Reply Date view Thread view Subject view Author view

From: Mark Lewis (markl++at++equipe.ltd.uk)
Date: 02/04/2000 02:03:51

Hi Performers,

I am developing a Performer (2.2 / 6.4) application on an Onyx2 IR and
have a requirement to use glCopyPixels as a post-draw operation in order
to combine a colour image into a monochrome one and optionally apply
scale & bias and/or convolution.

I am using a multisample visual, and when I don't do the glCopyPixels
and view the normal RGB image, it is correctly anti-aliased. But when I
apply the glCopyPixels operation to convert to monochrome, the image is
jagged, as if a single-sample rendering had taken place.

My questions are:

1. Is glCopyPixels compatible with multisample rendering ?

2. If so, how can I generate an anti-aliased image using glCopyPixels ?

3. Is there another means by which a monochrome image can be produced,
with the possibility of using scale, bias & convolution functions in
real time (30Hz) ?

Thanks in advance to anyone who can offer help on this matter. 

-- 
Mark C Lewis

Software Development Manager
Equipe Electronics Ltd.

"Visualising Your Imagination"

Phone  +44 (0) 1903 216 622
FAX    +44 (0) 1903 216 633
Mobile        07939 109 910

mailto:markl++at++equipe.ltd.uk
http://www.equipe.ltd.uk

13 Liverpool Gardens
Worthing, W. Sussex
BN11 1RY
ENGLAND

New Message Reply Date view Thread view Subject view Author view

This archive was generated by hypermail 2b29 : Fri Feb 04 2000 - 02:09:20 PST

This message has been cleansed for anti-spam protection. Replace '++at++' in any mail addresses with the '@' symbol.