Particles cause a crash on some radeon devices, so people can at least disable it to make the game working.
Also tfb causes quite big slowdown on slow devices even if there is no particles displayed, so it can give few more fps.
(fixes karts getting stuck at borders), use a longer less bevelled collision
shape better kart stability), and reduce angular factor to make it less
likely that karts can drive on walls.
In this case only diffuseMatColor really matters, other values are constant.
It improves performance on GLES renderer and it's also noticeably faster for GL on desktop.
For example:
- fps increased for me from 60 to 69 on Hacienda with intel HD 4000
- from 43 to 49 on lighthouse
There is much less difference on nvidia graphics card, but still it gives small performance improvement.
- Don't use BGRA format at all. It doesn't work with non-typical cases (i.e. with srgb or compressed textures) and also casues artifacts on some android devices. I kept the extension in central settings, but it probably won't be used.
- Use sRGB texture format when advanced lighting is enabled. This makes it closer to the original OpenGL renderer and also avoids to have even more #ifdef's for sRGB conversions.
- Keep RGBA textures for non-advanced lighting to make it simpler.
Now advanced lighting in GLES looks almost the same as in OpenGL 3.x (without shadows/GI)
The force legacy device graphics restriction is needed for ironlake graphics cards. But newer generations in pentium/celeron processors also are named just "Intel(R) HD Graphics" without any number.
The newest drivers for ironlake graphics card is 8.15 and it's unlikely that it will get an update. So assume that all drivers older than 9.x are ironlake generation or that are too old to run STK anyway.
It's a bit ugly solution because we should handle it properly in one place and not add another sRGB correction... But it's already working solution and it doesn't affect the OpenGL renderer, so we can use it until better fix will be done.
Now the GLES renderer looks almost the same as the original OpenGL 3.x one :)
