[PATCH v2 0/3] MR4956: wined3d: Two fixes for SPECULARENABLE.

[Zebediah Figura (＠zfigura)]

Found while refactoring FFP code; no known application is affected.

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  v2: wined3d/glsl: Pass through the specular varying when SPECULARENABLE is FALSE.
      wined3d/glsl: Always set WINED3D_SHADER_CONST_FFP_LIGHTS in FFP constant update masks.
      d3d8/tests: Add more tests for SPECULARENABLE.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/4956