brutal doom video glitching green and black

[peppino4352]

so i have a pretty old laptop with 2 new 16 gb ram sticks in it and a intel 520 graphics driver, ive updated my graphics driver mutiple times and if i try to open brutal doom or gzdoom it comes up plays the sounds and music but i can't see anything besides the curser with the imp hand and rabbit head other than that its ethier completely black or flickering green and black can someone help me im new to this kind of stuff

[Shepardus]

Have you tried changing the rendering API used (Vulkan/OpenGL/OpenGL ES)? You should be able to pick it in the IWAD selection window that pops up before the game if you have that enabled, or you can open the config file (gzdoom.ini in your Documents\My Games\GZDoom folder, or gzdoom_portable.ini in your GZDoom folder if you have that) and change the vid_preferbackend config (0 for OpenGL, 1 for Vulkan, 2 for OpenGL ES).

[FraggerX]

I don't think that supports Pixel shader 3.0

[Redneckerz]

39 minutes ago, FraggerX said:

I don't think that supports Pixel shader 3.0

It does (If its a Intel HD 520), its just that GZDoom really doesn't like Intel.