Deluxe maps are wrong on and near transparent surfaces close to a skybox.

[illwieckz]

Deluxe maps are wrong on and near translucent surfaces close to a skybox. This produces messy artifacts when deluxe mapping is enabled.

This is very likely a q3map2 issue, but we should not forget it so I also create this issue here to track it.

Here some examples with station15 map:

• viewpos 245 -1434 90 -90 -70

• viewpos -1280 -475 134 98 -21

[illwieckz]

Maybe it messes with the light direction of the skybox from the other side.

[illwieckz]

This kind of transparent surface is tow-sided, maybe using single-sided one may workaround it?

There is also a lightmap and a deluxe map on the other side…

[slipher]

How do we read the vectors off of these?

[illwieckz]

https://github.com/DaemonEngine/Daemon/blob/3e5b927e867d7f32a88280ca8c254eab2ea05b12/src/engine/renderer/glsl_source/lightMapping_fp.glsl#L107-L110

https://github.com/DaemonEngine/Daemon/blob/3e5b927e867d7f32a88280ca8c254eab2ea05b12/src/engine/renderer/glsl_source/computeLight_fp.glsl#L78-L88