MaxRideWizardLord wrote: ↑
Thu Jul 13, 2017 17:59
EDIT: Last working GZDoom that was pretty much close to perfect in it's processing was gzdoom-g1.10pre-1359-g6a8e60c
What changed since then?
Well, essentially the entire renderer was redone. By that I mean, it now uses a completely different method to send data to the hardware.
Which by itself isn't a problem - but you have to know that AMD has been notorious for quick deprecation of their hardware. In your case this got compounded by also running on a deprecated operationg system, which gave AMD even more incentive to stop driver support even before the hardware itself got deprecated.
This all sums up to the fact that the last XP-compatible driver for your hardware is quite a bit broken when trying to run modern OpenGL software.
The only way to 'fix' this would be to reinstate the old renderer from GZDoom 1.10. Which won't happen because the only systems that would benefit from it are XP systems with deprecated AMD and ATI graphics cards, most notably the Radeon HD 4000-6000 range. It'd be a disservice to everybody running an up-to-date computer.
Also note that these problems do not happen on Intel graphics hardware, they do not happen on NVidia graphics hardware, they do not happen with modern AMD hardware and they even do not happen on older AMD graphics hardware with a modern OS. They only happen with the range of Catalyst drivers that were produced around the time XP support was shut down. These drivers have long been updated for all affected hardware - just not on XP.
Also confirming Rachael that in terms of GZDoom development, XP is considered unsupported. If it still works, nice for you, if not, you are out of luck. We won't deliberately remove support but we also won't do anything to investigate platform specific problems. The OS is no longer being updated and people should stop using it. You are strongly encouraged to upgrade to a still supported Windows version. Once the problem reports become too much or something else is not compatible it will be shut down for good with no attempt being made to keep it alive.