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Bug: ssbump bumpmaps do not work without $envmap when viewed under a dynamic light #1877

Description

@November-N

Describe the bug

Clustered lighting (ie dynamic lighting, static seems to work) appears to ignore the bumpmap (ie appear perfectly flat) when $envmap is not defined. It seems to work perfectly well when $envmap exists in the material so this appears to be an odd bug.

screenshot and map packed with assets

tested on the current latest public release of P2CE

ssbumptest.zip

Image

To Reproduce

  1. open attached map
  2. view stark visual difference between the ssbumped and non ssbumped sides

Issue Map

No particular map, P2 and to a lesser extent TF2 and L4D use non-reflective ssbump materials all over community and official maps.

Expected Behavior

It should match the behaviour of itself when $envmap is defined, ie work as a bumpmap

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    Includes Map!Priority 3: MediumSomething that should be attempted/looked at for the next release, and done if possible.Size 4: SmallSomething that will take up to a day to do.Type: BugThis is a problem with something that should be working one way, but isn't.Type: CompatBreaks compatibility!What: GraphicsGraphics-related stuff

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