GTA Stories, no backface culling

[N-Chiri]

Hi.

I'm new to PSP emulation, I'm currently playing GTA Liberty City Stories and GTA Vice City Stories. Both games work mostly fine at 30 FPS, but there is an issue with (the lack of) backface culling that breaks some cutscenes. I was told to use OpenGL rendering, but I'm doing that already.

I'm using the Windows version, on W10 Pro.

[[Unknown]]

PPSSPP asks your driver to use backface culling whenever the game requests it. So if it's really that, it probably means an issue in your graphics driver. You might want to try other graphics backends, such as Vulkan or Direct3D 11.

There is an issue with some older drivers, including some Intel drivers, where they don't support a type of triangle culling the PSP did. This is different from backface culling (which is culled based on the order the points of the triangle are specified in) and has to do with their depth value.

For these, try making sure you're using the latest git build, and turn off "hardware transform" in the settings.

-[Unknown]