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FxSunLight Scale

by Adam Larson · in Torque Game Engine · 01/24/2005 (3:54 pm) · 3 replies

I am using Melv's fxSunLight in the background of one of my menus and I noticed it is independent of the screen resolution. It's not very noticeable in a regular mission, but if you're looking for it, you can tell. As a quick fix, I did this:

Include platform/platformVideo.h in fxSunLight.cc.

Then add the following to the onAdd function after the call to setFlareBitmaps on line 1604 of fxSunLight.cc
Resolution currentRes = Video::getResolution();
F32 scale = (float)currentRes.h / 480.0f;

mFlareSize *= scale;
mMinSize *= scale;
mMaxSize *= scale;

This is scaling the size based on height only so the fix won't work right with aspect ratios other than 4:3 and it assumes the base size is relative to a 640x480 resolution.

Edit: The call to dglGetPixelScale on line 1828 scales the billboard so that it is independent of screen resolution. Removing this call will give you a sun that gets bigger with a higher resolution. Much nicer fix than the one I posted above.
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Associate Melv May
#1
01/25/2005 (12:58 am)
@Adam: The scaling is already in there but it may not be working correctly. I believe it's the line...

BBRadius = (Distance / dglGetPixelScale()) / 2;

I think "dglGetPixelScale()" is the scale of 640 pixels. Hey, nothing was documented in the code when I did this so it was seat-o-the-pants stuff. ;)

I haven't looked but as far as I remember, sort this line out and it will be independant of screen-res.

There are several other problems with the code that have become apparent now that things have moved along a little. The fxSunlight stuff should be converted to use a system similar to the fxLight stuff. Particularly so that it renders through portals correctly as well as not being dependant upon the control-object.

- Melv.

Torque Owner Adam Larson
#2
01/25/2005 (3:49 pm)
That actually was the problem I was having. I don't want it to be independent of screen resolution since I am using it as the actual image of the sun as opposed to a lens flare effect. Removing the call to dglGetPixelScale fixed this for me in a much nicer way than my ugly hack I posted above.

Thanks for the help!

Associate Melv May
#3
01/26/2005 (1:02 am)
Cool, glad it worked for you. ;)

- Melv.