[GEM-dev] motion blur

[cyrille henry]

Erich Berger a écrit :
> hi chris,
> 
> thx for your patience in the motion blur business :-) .
> it works well - but unfortunately its a motionblur in
> single buffering. but there is also another problem:
> 
yes, and it's a problem for rendering complex objects.
So i don't think this solution solve all the problem.

> unless i make something wrong it works for 2d but not 3d.
> only those pixels of the scene which have the same z-coordinate as the 
> rectangle for the blur get blurred, the rest
> gets drawn like in single buffer mode

i think you also nead to clear deaph buffer (before drawing the rectangle).

Cyrille


> 
> e
> 
>> I found a stupidly simple way to get 'motion blur' with next to zero
>> resources.  Ready?
>>
>> Use single buffer rendering
>> Set up the scene to draw
>> draw everything with positive gemhead numbers
>> set up a gemhead -1
>> add the alpha, colorRGB 0 0 0 0 and a rectangle object
>> make the rectangle equal the porpotions of the window (4 4 for square,
>> 5.334 for 4:3 rectangle)
>> modulate the alpha inlet to control the blur amount
>>
>> Stupid enough?
>>
>> cgc
> 
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