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we need stencil shadows but.... #98794
11/15/06 15:47
11/15/06 15:47
Joined: Oct 2003
Posts: 94
bs_twinbits Offline OP
Junior Member
bs_twinbits  Offline OP
Junior Member

Joined: Oct 2003
Posts: 94
Hi all,
we are using the engine version 6.50.02, A6 Prof.In our project running on my system AMD 64 X2 3800 and GeForce 7800 GTX, we have strong problems by using the stencil shadows. Without shadows the framerate is near the double as with shadows.But all models looks more realistic and much more better than without.Is there a chance to use them without loosing performance?
Bernd
twinbits entertainment

Re: we need stencil shadows but.... [Re: bs_twinbits] #98795
11/15/06 15:57
11/15/06 15:57
Joined: Nov 2004
Posts: 7,121
Potsdam, Brandenburg, Germany
Machinery_Frank Offline
Senior Expert
Machinery_Frank  Offline
Senior Expert

Joined: Nov 2004
Posts: 7,121
Potsdam, Brandenburg, Germany
You can improve performance of stencils with LOD models. The shadow uses the next LOD stage and can be rendered much faster then.

And you need very simple structures for a shadow so it can be very low poly.


Models, Textures and Games from Dexsoft
Re: we need stencil shadows but.... [Re: Machinery_Frank] #98796
11/15/06 19:14
11/15/06 19:14
Joined: Jan 2006
Posts: 1,829
Neustadt, Germany
T
TWO Offline

Serious User
TWO  Offline

Serious User
T

Joined: Jan 2006
Posts: 1,829
Neustadt, Germany
Third time I write this:

Even a 8800GT wouldn´t make the shadows fast, cause they are calcualted on th CPU. JCL ( or maybe a skilled forum member ) will fix that, so the GPU will do the work. Then they are as fast as in other games using this kind of shadow technique.

Edit: Indeed true, no answer to the question; Sorry for that

Re: we need stencil shadows but.... [Re: TWO] #98797
11/15/06 20:28
11/15/06 20:28
Joined: Oct 2003
Posts: 94
bs_twinbits Offline OP
Junior Member
bs_twinbits  Offline OP
Junior Member

Joined: Oct 2003
Posts: 94
Quote:

Third time I write this:

Even a 8800GT wouldn´t make the shadows fast, cause they are calcualted on th CPU. JCL ( or maybe a skilled forum member ) will fix that, so the GPU will do the work. Then they are as fast as in other games using this kind of shadow technique.




What should I say to this answer, better nothing......
bs

Re: we need stencil shadows but.... [Re: bs_twinbits] #98798
11/15/06 21:46
11/15/06 21:46
Joined: Nov 2004
Posts: 7,121
Potsdam, Brandenburg, Germany
Machinery_Frank Offline
Senior Expert
Machinery_Frank  Offline
Senior Expert

Joined: Nov 2004
Posts: 7,121
Potsdam, Brandenburg, Germany


That sounds really sad.


Models, Textures and Games from Dexsoft
Re: we need stencil shadows but.... [Re: Machinery_Frank] #98799
11/16/06 04:42
11/16/06 04:42
Joined: Oct 2003
Posts: 4,131
M
Matt_Aufderheide Offline
Expert
Matt_Aufderheide  Offline
Expert
M

Joined: Oct 2003
Posts: 4,131
Well only the shadow volume extrusion is calculated on the cpu, not the actual rendering of the shadow, but the main thing is to use lower poly models for the shadows. The stencil shadow sthemselves arent so slow its the meshes you use them on. Use LOD models and it will be much faster.


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