Slope / 3D floor rendering totally screwed-up, can crash

[GFD]

Has anyone mentioned this yet / is this already known? All dev builds from DRD Team since and including 832-gf1b3f59 (April 23rd) have really screwed-up slope and 3D floor rendering. This can also cause crashes. Opening Chex Quest 3 E3M5 and warping to -2000 2500 310, for example, results in an instant lock-up due to the slopes.

How the first test map from my other thread appears in 2.8.1:


How it appears in these dev builds:


How the second test map appears in these dev builds:

[Graf Zahl]

I hate to say it, but it looks like the renderer floatification should have been a separate branch until these things could be ironed out. Now we're stuck with broken devbuilds.
Just a quick look revealed some places where float and fixed got mixed, sadly not related to these glitches.

[Nash]

On the other hand, making these broken devbuilds available in the wild will help facilitate bug hunting faster, IMO. Had these branches been kept private, it would have taken a much longer time before users like GFD discovered and made these reports... ?

I don't know, just my two cents, heh. :V Carry on!

[Graf Zahl]

This was obviously never tested with a 3D floor, they are all completely broken. Same for slopes. Nearly every map with slopes I test immediately crashes in R_DrawTiltedPlaneASM. I was able to fix that crash, but as of now, neither 3D floors nor slopes work at all in the software renderer. As I said, this would have been better as a branch until this stuff was at least tested sufficiently.

[Graf Zahl]

Both problems are fixed with Randi's latest commits.