[g2.1.pre-863-gb45c88f] ATI Graphical Errors

[Rachael]

Multiple graphical errors starting with this devbuilds version. Previous uploaded version (g2.1.pre-860-g8762ab4) works fine.

I am unable to compile it myself right now since I've gone through multiple hard drive crashes, I do not have a working C++ environment right now. It's going to take me a few days to prepare a new Windows image for this since my graphical development one is full right now.

Symptoms noticed so far:

• Weapon sprites will not show
• Masked textures are invisible
• Viewport cropping graphic does not always show; sporadic, usually only refreshes when picking up an item or taking damage, but if resizing the viewport it does not redraw

Computer specs:

• Intel core i7 940 underclocked to 1.54GHz with only 1 hyper-threaded core (this was necessary because of PSU issues)
• ATI Radeon HD 4850 (GL Version - 3.3.11672) (Catalyst Version 13.1 - Jan2013)
• Windows Server 2012 R2 Datacenter 64-bit (This is an 8.1 Server variant)

Files:

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Screenshot_Doom_20150411_162955.png

Screenshot: (Same screenshot, just downloadable, since the forum isn't great for viewing them)

Screenshot_Doom_20150411_162955.zip

Other files:

gzdoom-Administrator.ini

gzdoom-log-ati-error.txt

DxDiag.txt

[Graf Zahl]

Oh, please don't tell me that these idiots left some cards in the dust with such a crucial feature broken...

Deprecating drivers may be all nice and well, but why does it have to be at points where the driver is broken beyond repair...?

(FYI, it has been known that AMD had long standing problems with disabled clip planes not being properly checked - seems like you got stuck with that. It wouldn't surprise me if older versions also have problems with reflective floors.)

[Rachael]

(FYI, it has been known that AMD had long standing problems with disabled clip planes not being properly checked - seems like you got stuck with that. It wouldn't surprise me if older versions also have problems with reflective floors.)

I'll check that with g2.1.pre-860-g8762ab4.

[Rachael]

You are right - activating a mirror sector causes all sorts of graphical glitches. The console and status bar stop working in 860-g8762ab4.

I'm attaching the test wad for future reference, in case it becomes necessary to test it later on if I do not have access to it.

[Graf Zahl]

This seems to be worse than I feared. I know that there's drivers out there which cannot disable the clip planes so I made sure that they contain values which always let everything pass. But it looks on your system something far worse is happening, the driver is acting in a completely unpredictable way.

I'm afraid, I'll have to check this on the affected system because I can't get it to glitch at all for me.

[Rachael]

It's going to take probably a week or two for me to get everything set up since I am using this system for my school and work currently, I will let you know.

[Graf Zahl]

I believe all this was a result of the broken clip planes.