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11991 Posts in 1587 Topics- by 3508 Members - Latest Member: PienueDut

26. May 2012, 10:06:02 am
Xith3D CommunityXith3D InternalsDeveloper discussion (Moderators: Marvin Fröhlich, 'n ddrylliog)Shadow Mapping with directional light
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Michael Schreiner
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« on: 08. February 2009, 04:55:41 pm »
Hello,

I looked at some the shadow mapping issues. The goal is, to have the functionality also for directional lights and not only for spot lights. I am not sure what changes are necessary. It seems, the projection methods of xith are used for the creation of the shadow map. Is it possible to use a parallel projection feature of xith for this? Will it be sufficient to understand the xith Java code or are changes in the shader codes necessary?

Thanks,

Michael
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Marvin Fröhlich
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« Reply #1 on: 08. February 2009, 05:28:12 pm »
I should have nothing to do with the shader program. The only single method, that would need to be changed is
org.xith3d.effects.shadows.ShadowMappingFactory.setupRenderPass()

Marvin
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Michael Schreiner
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« Reply #2 on: 08. February 2009, 06:56:57 pm »
Ok, thanks. I'll try this...

Michael
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hawkwind
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« Reply #3 on: 08. February 2009, 11:04:43 pm »
make sure the shader code supports the number of lights in your scene.  I think alot of our examples use light0 for the light source.  I will push in some multi light support soon
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