From Googling a bit it seems to be related to your video card drivers and RenPy changing window size.
You could try disabling the pre- splash and see if that solves it or update your video card drivers.
Comment out / remove line 263 in bootstrap.py and it'll not pop up the fullscreen splash image before showing the smaller window.
Then again, the issue could lie elsewhere, but since the error log references bootstrap and screen stuff it might be related.
Attaching the bootstrap.py if you want to just throw it into the RenPy folder instead of make the edit yourself.
(It might not solve anything).
There's no actual error in the log actually. Its a pretty standard startup log for renpy. Mine looks pretty much the same, though I'm on an Nvidia card vs he's on ATI, so the extensions loaded differ. The only thing thats unusual about the startup log is the abrupt end during the texture testing.
Other than that, I agree that the issue seems graphical in nature. Renpy's documentation gives a couple options to attempt to address graphical issues.
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A small fraction of systems may experience problems when running hardware accelerated Ren'Py games. These problems are often due to buggy graphics drivers, and so your first step to fixing them should be to check for an update to your graphics card drivers.
If upgrading your video drivers does not fix the problem, you should consider switching video renderers, using the following steps.
- Hold down Shift while starting Ren'Py, or press Shift+G once Ren'Py has started.
- From the "Graphics Acceleration" menu that appears, choose the renderer to use.
- Choose "Quit", then restart Ren'Py.
Holding Shift while launching might work, but renpy may be crashing before it even gets to that point, though the log would indicate that it is at least getting to the renderer ("Using gl renderer") before crashing abruptly. So perhaps changing renderer away form GL to something like directx (or software, bypassing the graphics card completely, but will have a definite negative effect on performance) might work.
A blanket solution would be to try downloading the
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and drop the entire Lab_Rats_2-v0.17.1-pc directory into the renpy-7.2.2-sdk directory, and attempt launching the project from there. Its a more recent version of renpy than what the game is built on that might fix your issue, but honestly its a shot in the dark.