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Re: [Announce] Amaya 9.1.4 and Amaya 8.7.4

From: Stéphane Gully <stephane.gully@libertysurf.fr>
Date: Wed, 01 Jun 2005 22:35:48 +0200
Message-ID: <429E1C24.9050509@libertysurf.fr>
To: Stanimir Stamenkov <stanio@myrealbox.com>
Cc: www-amaya@w3.org


> Is Amaya 8.7.4 really the same as 9.1.4 and just the UI library used 
> differs?

Yes the 2 versions are the same, it differs only on UI and low level 
display functions (opengl/win32).

> I'm asking this because of the rendering problems with Amaya versions 
> 9.x on Win systems reported here and which I experience on one of the 
> two machines I use it. Apparently there's no problem with Amaya 8.7.x 
> versions but the rendering seems different.
>
> Couple of times the answer to these problem reports was to upgrade the 
> video drivers but unfortunately for one of the systems I use there are 
> no more recent drivers from those I've already installed. AFAIK WinNT 
> systems come with default software OpenGL 1.0 support (no matter of 
> the video hardware) and I've wondered what OpenGL version Amaya 
> requires? I think it would be too much of a requirement for "text" 
> editor to require OpenGL 1.5, for example.

I recently updated the FAQ (http://www.w3.org/Amaya/User/FAQ.html#II.19.) :

<<
AmayaWX uses OpenGL for page rendering. This allows a better support of 
SVG and animations. The drawback is that Amaya is very dependent on 
video card's drivers, if a driver is buggy, Amaya will probably crash...

On Unix platforms, Amaya comes with the Mesa library to implement OpenGL 
primitives. Mesa is a software OpenGL implemetation so Amaya isn't 
dependent on video card drivers on Unix. If Amaya doesn't start or is 
very slow on Unix platforms it's something else.

On Windows platforms, Amaya uses hardware OpenGL implementation so Amaya 
is very dependent on video card's drivers. When the application doesn't 
start or is very very slow, we suggest that users check:

   1. Update of their video card driver, if there is an available. This
      update can be found either on the MicroSoft site (see the driver
      section) or on the site of the Video card provider.
   2. Try to slow down hardware acceleration of the video card: |Panneau
      de configuration → Affichage →Paramètres → Avancé → Dépannage|

 >>

I recommend you to follow the (2) (I hope you have the right privileges 
on your machine to do that)

> * When clicking on the scrollbar top/down buttons or within the 
> scrollbar, the canvas was not redrawn on Windows platforms.

This bug is fixed in 9.1.4. Isn't it ?

> What I experience is if I scroll the page and then start to type text 
> the picture changes states on every key press - one state just before 
> I've scrolled, then on next key stroke the screen "resumes" on the 
> state where I've scrolled... just like there are two off-screen pages, 
> one of which hasn't been refreshed. If I put Amaya in background and 
> bring it back later it seems it has refreshed "the two pages" and 
> everything's fine, until the smallest scroll occur - the picture start 
> jumping again.

Very strange behaviour. It happends on Amaya 9.1.4 ?

regards,

-- 
Stéphane GULLY - http://www.zeitoun.net/
Received on Wednesday, 1 June 2005 20:35:55 UTC

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