The size does matter. Thats how shodows are diffused in real life. I got my info from "Andvanced Animation and Rendering Techniques" book .......
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Diffuse Shadows
The size of the Sun relative to the Earth is what creates the umbra and penumbra durin a lunar eclipse. The size matters ALOT. Unfortunately, I don''t think any graphics API can replicate that effect realistically.
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I am the master of stories.....
If only I could just write them down...
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I am the master of stories.....
If only I could just write them down...
The high end graphics programs can render like that, it''s called Global Illumination. Light comes from all directions.
Doing it realtime in OGL, good luck. Be sure to write a tutorial on it for me if you figure it out
Doing it realtime in OGL, good luck. Be sure to write a tutorial on it for me if you figure it out
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snisarenko I have that book!! but I didn''t read it all, I will look at it right now..thanks a lot!
If you use projective shadow mapping (where you render the object to a texture, then project the texture onto the scene), you can simply use a low resolution texture and stretch it, and it will give blurry shadows... of course, that''s just an idea 
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Look up "jittering". There''s no way of getting shadows as good as those, but you can at least get some soft shadows from it.
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