Emulator

Game Name/ID?

Any game

What's the problem? Describe what went wrong.

Current implementation does something like the following:

tevTex = getSample(uv, tmap).agrb;
zVal = dot(tevTex, zTex) + zbias;

Where the pixel value is swizzled depending on the swaptable. When the last stage texture is used for z-texture the swizzled value is used.
From testing I determined that Z-textures are unaffected by the swaptable, so something like the following should be done instead:

rawTevTex = getSample(uv, tmap);
tevTex = rawTevTex.agrb;
zVal = dot(rawTevTex, zTex) + zbias;

Is the issue present in the latest development version?

Yes, Issue occurring as of rev 2412-225

Is the issue present in the latest release?

Yes, as of rev 2409.0