On Monday 16 January 2012 11:34:23 thorsten.i.r...@jyu.fi wrote:
> I've noticed recently more or less by accident and to my dismay that
> model-default.eff is used both by models placed in the scenery and by
> typical aircraft 3d cockpits.
>
> This is rapidly looking like a bad idea when a more detailed atmosphere
> model enters the game - the terrain haze shader has altitude-differential
> fog, the sunrise/set code I'm working on has position-differential
> lighting and fog coloring.
>
> Models placed into the scene need essentially the same shader as the
> terrain and skydome, otherwise they don't blend properly - no choice here.
>
> However, half the visual field is typically taken by the cockpit, and the
> vertices and pixels of that don't really need to go through ~120 lines of
> differential fogging and lighting code just to discover that they get the
> default light at the position and no fog.
>
> One could probably write some provisions into the shader to make a
> distance check first and if the model is very close not to go through all
> the motions, but it seems more reasonable to me to do this on the level of
> the effect declarations and simply feed the 3dcockpit through a different
> default effect file which never tries to do any fogging in the first
> place.
>
> Would this be complicated to do (i.e. require changing all aircraft xmls),
> or is there an easy way to do this? I'm just testing the waters here... as
> far as I know none of the position differential shading code has been
> committed yet, but I'm sort of developing strongly into that direction,
> and I want to identify trouble as soon as possible...
>
> * Thorsten
This behaviour is hardcoded, as there needs to be a default fallback
effect/shader when none is specified in the model and shaders are turned on.
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