subject:"Re\: \[Flightgear\-devel\] Clouds"

Re: [Flightgear-devel] clouds heads up

2009-11-28 Thread Tim Moore

On 11/28/2009 05:25 AM, Tatsuhiro Nishioka wrote:
Hi Tim,

As I said to you in IRC, I have a weird transparency problem with the shaders
enabled.
Here's the snapshot (helicopter view) with shaders.
http://macflightgear.sourceforge.net/wp-content/uploads/snapshots/3dclouds-effect-enabled.png

I used both FG/SG @ cvs-head as of yesterday and FG/SG @ Tim's git, but I got
exactly the same result.
The cause of this fancy rainbow-ish filter is the alpha calculation in both
default.vert and model-default.vert.

A lazy patch to avoid this issue is available at:
http://macflightgear.sourceforge.net/wp-content/uploads/patches/shaders-weird-alpha-fix.diff

I don't know if the real problem is in a shader side or C++ side.
Tim, do you have any hint on this?

Pretty bizzare. Obviously turning off alpha altogether isn't a real option. Is
this a new problem since
the 3d clouds went in, or are/were you seeing it without 3d clouds at all? What
version of
OSG are you using?

Tim

Best,

Tat

On Nov 27, 2009, at 2:41 AM, Tim Moore wrote:

I've checked in code that changes 3D clouds to use effects. you should update
simgear and Effects and Shaders in the data directory.

There is a one frame blip of weirdness that I know about; a fix is in the
works.

Tim

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Re: [Flightgear-devel] clouds heads up

2009-11-28 Thread Tatsuhiro Nishioka

Hi,

On Nov 28, 2009, at 7:16 PM, Tim Moore wrote:

On 11/28/2009 05:25 AM, Tatsuhiro Nishioka wrote:
Hi Tim,

As I said to you in IRC, I have a weird transparency problem with the
shaders enabled.
Here's the snapshot (helicopter view) with shaders.
http://macflightgear.sourceforge.net/wp-content/uploads/snapshots/3dclouds-effect-enabled.png

I used both FG/SG @ cvs-head as of yesterday and FG/SG @ Tim's git, but I
got exactly the same result.
The cause of this fancy rainbow-ish filter is the alpha calculation in both
default.vert and model-default.vert.

A lazy patch to avoid this issue is available at:
http://macflightgear.sourceforge.net/wp-content/uploads/patches/shaders-weird-alpha-fix.diff

I don't know if the real problem is in a shader side or C++ side.
Tim, do you have any hint on this?

Pretty bizzare. Obviously turning off alpha altogether isn't a real option.
Is this a new problem since
the 3d clouds went in, or are/were you seeing it without 3d clouds at all?
What version of
OSG are you using?

I guess this problem is not that new, but I couldn't see it until you
introduced the alpha calculation on .vert files.
As a matter of fact, a bit older FG/SG/OSG/data (cvs or svn as of Sep/07/2009)
and the latest shaders (all .eff, .vert, .frag, and materials.xml as of
Nov/28/2009) gave me the similar result. The rainbow-ish effect shows up on
both scenery and ground objects. Only the difference is that the older FG
doesn't have a rainbow-ish effect on the aircraft model, while the latest FG/SG
the latest Shader make a rainbow-ish effect on the aircraft model as well.
(FYI, I use OSG/svn on Nov/27 for the latest FG/SG.)

This rainbow-ish effect shows up with or without 3D clouds on both old and the
latest FG, so I guess it has nothing to do with the new 3D cloud shader.

Anyway, I'll keep investigating this.

Tat

Tim

Re: [Flightgear-devel] clouds heads up

2009-11-27 Thread Tatsuhiro Nishioka

Hi Tim,

As I said to you in IRC, I have a weird transparency problem with the shaders 
enabled.
Here's the snapshot (helicopter view) with shaders.
http://macflightgear.sourceforge.net/wp-content/uploads/snapshots/3dclouds-effect-enabled.png

I used both FG/SG @ cvs-head as of yesterday and FG/SG @ Tim's git, but I got 
exactly the same result.
The cause of this fancy rainbow-ish filter is the alpha calculation in both 
default.vert and model-default.vert.

A lazy patch to avoid this issue is available at:
http://macflightgear.sourceforge.net/wp-content/uploads/patches/shaders-weird-alpha-fix.diff

I don't know if the real problem is in a shader side or C++ side.
Tim, do you have any hint on this?

Best,

Tat

On Nov 27, 2009, at 2:41 AM, Tim Moore wrote:

 I've checked in code that changes 3D clouds to use effects. you should update
 simgear and Effects and Shaders in the data directory.

 There is a one frame blip of weirdness that I know about; a fix is in the 
 works.

 Tim



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Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day 
trial. Simplify your report design, integration and deployment - and focus on 
what you do best, core application coding. Discover what's new with
Crystal Reports now.  http://p.sf.net/sfu/bobj-july
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