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Re: GL4ES: another OpenGL over OpenGLES2 emulation - some tech. info and porting progress

Subject: Re: GL4ES: another OpenGL over OpenGLES2 emulation - some tech. info and porting progress
by IamSONIC on 2021/4/29 14:39:50

@kas1e

Something else.

The game Giddy 3 (old version) shows some black background flickering when playing using MiniGL4GL4ES.

Since the version available on OS4Depot is quite old i thought lets compile the more recent version of Giddy 3 and link it directly against GL4ES. Giddy 3 uses native AmigaOS4 code in order to draw to the screen (P96+MiniGL). I adjusted the OS4 render paths in order use OpenGL directly (like linux/pandora versions) so no more calls to P96+MiniGL.

The funny but bad thing: The new Giddy 3 build using GL4ES directly shows excactly the same rendering issues regarding black background flickering. I tried out almost all GL4ES environment variables but no luck so far.

And here is how it looks:

Resized Image

Maybe this is something where GL4ES can be improved. If you need the sources of new Giddy 3 or anything else let me know.

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