Here's some ways to fix this:
(not guarantee that this will work)First way:
Rename or delete Opengl32.dll.
There will be some graphical bugs for example: bullet hole decals will "flicker" a bit.Second way: If you deleted or renamed Opengl32.dll restore file name to original one or if it was deleted restore it back. Install NGlide
and in wrapper settings change resolution to what you want (You are not required to do this expect if you want to change resolution) then in Half-Life GL.bat
change resolution to 800x600.
Then it will work correctly.
Here's some things you need to know:Demo maps
actively uses audio tracks from the disk. If you don't hear music then either insert a physical disk drive (
Modern PC's and laptops don't have them usually) or use emulator that supports audio tracks for example:
Alcohol 52%BUT WAIT!!! EMULATOR DRIVE MUST COME BEFORE PHYSICAL DRIVE OTHERWISE THE GAME WILL NOT FIND MUSIC SOURCE!!!!Campaign maps are
loaded through console.
If you try to load them through menu it will load warez_dm map.
Don't forget to read Walk Thru.doc (Has some useful information if you stuck somewhere in the map)