Shader - Directional Lights Depth

Asked Jan 01 '16 at 18:43

Active Jan 01 '16 at 19:13

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Is there a way to retrieve the deph from directional lights ? I can access the _ShadowMapTexture but this is not the depth.

I found how to access the shadow map of, I think, every light type by using the defines such as SHADOW_ATTENUATION(a) or directly the _ShadowMapTexture, everything is located in the built-in shaders.

But I am wondering how could I access the depth of those lighting type. I found a way to access it for the spot light this way : _ShadowCoord.z which gives the depth scaled with _ShadowCoord.w, which could be considered to the far plane, but am I right ?

How could I do the same for the other light types such as directional or point lights ? For the moment I am stuck with directional lights, any clues ?

Because if I try to access the depth for a directional light by using _ShadowCoord.z it seems that it's more related to the depth view and not the light. Here I am, totally stuck with this directional lights.

edited Jan 01 '16 at 19:13

asked Jan 01 '16 at 18:43

MaT

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The depth of what, exactly? – Nicol Bolas Jan 01 '16 at 18:58
I edited the question. – MaT Jan 01 '16 at 19:12
Lights do not have "depth". So it's not clear what you are talking about, or what that has to do with shadow maps. – Nicol Bolas Jan 01 '16 at 20:06
I am trying to retrieve a depth map from light point of view. And I don't how to do it for the directional lights. – MaT Jan 01 '16 at 20:32

Shader - Directional Lights Depth

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