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Shadow transparency bug?
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Shadow transparency bug? // Bugs
Post by Changa // Apr 10, 2007, 5:20am
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Changa
Total Posts: 187
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Hi Caligary Team. Do not know if somebody discuss it before. Well, Ts 7.11, modeler, LightWorks renderer. Scene is very simple. Floor, wall, two columns, glass in front of one column and one local light with map shadows on (sharpness - 4). At first picture light is set to nontransparent shadows which gives soft shadows. At the second picture light is set to transparent shadows which makes shadows tranparent but ups... sharp like ray shadows. By the way from PDF manual page 543 - 'Sharpness: Determines how soft the boundaries of mapped shadows appear. A larger value creates sharper shadows (which can cause jagged shadow edges if the map size is small), while lower values create soft shadows (which can hide the negative effect of a low resolution map to some extent).' Try to play with light shadows sharpness presets. Low gives 4, Med - 2.5, High - 1. Something (manual or order of sharpness values) should be changed! |
Post by Bobbins // Apr 10, 2007, 5:44am
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Bobbins
Total Posts: 506
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Selecting transparent shadows forces raytraced shadows. The GUI may look as though you still have mapped shadows selected, but as soon as you choose transparent shadows, the settings are over-ridden and forced to raytraced. LightWorks has always been that way and it's not possible to have transparent mapped shadows in LightWorks. |
Post by spacekdet // Apr 10, 2007, 6:39am
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spacekdet
Total Posts: 1360
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You'll have to use an area light or build your own array of lights if you want soft raytraced transparent shadows. |
Post by spacekdet // Apr 10, 2007, 6:50am
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spacekdet
Total Posts: 1360
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As far as shadow sharpness, forget the 'Low-Med-High' buttons and just set it numerically or via the scrubber double-arrow thingie.
Map size - higher = better quality, slower speed This determines either the pixel size of the map or the size in kb, I forget which. Either way, bigger is often better.
sharpness of 10=softer shadows, 1 = sharper shadows (somewhat counter-intuitive)
quality- intuitive; 1 is low and 9 is high |
Post by Changa // Apr 10, 2007, 8:43am
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Changa
Total Posts: 187
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Thanks!
Bobbins, this explanes everething -'The GUI may look as though you still have mapped shadows selected, but as soon as you choose transparent shadows, the settings are over-ridden and forced to raytraced', but why GUI does not changed? And why this shadows behavior is not described in the manual? Not all of us is Caligari team members. We get information from the manual!
Spacekdet, unfortunately you and the manual are not right about sharpness. Check it. 1= sharper shadows, 10 = softer shadows. |
Post by spacekdet // Apr 10, 2007, 12:16pm
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spacekdet
Total Posts: 1360
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Whoops, checked and you're right.
That'll teach me to jump on the forum before the coffee's done brewing.
Fixed my earlier post, thanks. |
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