Broken lightmap

[Tim_Hobson]

@mauroretch;271563

Thank you very much for the reply.

Effectively increasing the Map Resolution Light for the ground, improves the quality of the shadow projected onto this. But why a BSP Cube itself casts the shadow correctly without having risen the value of Light Map Resolution?

BSP are handled differently than static meshes. Increasing the LM resolution of a BSP is handled differently than that of a static mesh. In a static mesh each face has to fit within the 0,1 space of the UV and have a set resolution. For BSP each face is handled as it’s own UV space. To increase resolution on a BSP you also need to lower the Lightmap Resolution scale. This does not necessarily follow the power of two scale like static meshes. You can also see an example of this in the Wiki Lighting Guide.

[mauroretch]

@Tim Hobson;271617

BSP are handled differently than static meshes. Increasing the LM resolution of a BSP is handled differently than that of a static mesh. In a static mesh each face has to fit within the 0,1 space of the UV and have a set resolution. For BSP each face is handled as it’s own UV space. To increase resolution on a BSP you also need to lower the Lightmap Resolution scale. This does not necessarily follow the power of two scale like static meshes. You can also see an example of this in the Wiki Lighting Guide.

Ok, again thank you very much.

I will read the Wiki Lighting Guide.