Shader Error?

RetroArch Additions Shaders
#1

Everytime I try to turn on shaders it gives me this error:

RetroArch [ERROR] :: [GL]: Didn’t find valid shader backend. Continuing without shaders. RetroArch [ERROR] :: [GL]: Cannot find shader core for path: /home/james/Downloads/rgui.cgp. RetroArch [ERROR] :: Setting RGUI CGP failed.

I have the latest nvidia-cg-tookit installed. Any way to fix this? Thanks

#2

If this is the same ARM Linux build you were working on in other threads, it doesn’t appear to support Cg shaders in your build. For that matter, I didn’t think nvidia even shipped an ARM Cg Toolkit.

#3

This would be for another PC I managed to install RetroArch on. I think im giving up on the ARM linux lol

#4

oh lol. Ok, no problem.

This will pretty much be a rehash of the steps we went through in the other thread: retroarch --features, make sure it says:

OpenGL:
     OpenGL driver: yes
...
Cg:
     Cg pixel shaders: yes

Also, make sure you’re using the OpenGL rendering driver rather than SDL or Xvideo. If you’re on a Debian-based system (like Ubuntu or Mint), you can try using the packages in my PPA: https://launchpad.net/~hunter-kaller/+archive/ppa/

#5

SDL: SDL drivers: yes Threads: Threading support: yes OpenGL: OpenGL driver: yes KMS: KMS/EGL context support: no EGL: EGL context support: yes OpenVG: OpenVG output support: no XVideo: XVideo output: no ALSA: audio driver: yes OSS: audio driver: yes Jack: audio driver: no RSound: audio driver: no RoarAudio: audio driver: no PulseAudio: audio driver: yes DirectSound: audio driver: no XAudio2: audio driver: no zlib: PNG encode/decode and .zip extraction: yes OpenAL: audio driver: no External: External filter and plugin support: yes Cg: Cg pixel shaders: no libxml2: libxml2 XML parsing: yes SDL_image: SDL_image image loading: yes FBO: OpenGL render-to-texture (multi-pass shaders): yes Dynamic: Dynamic run-time loading of libretro library: yes FFmpeg: On-the-fly recording of gameplay with libavcodec: no FreeType: TTF font rendering with FreeType: yes Netplay: Peer-to-peer netplay: yes Python: Script support in shaders: no

I’m not realy sure why it says “no” for Cg shaders, I have the latest nvidia toolkit installed. Also for some reason whenever i go to “core options” it always says no core options available. I was trying to use the blargg’s nes filter but it wont come up, neither will any other ones.

#6

Check to see if your distro has dev packages for Cg. It looks like Ubuntu, at least (the system I’m on at the moment), now has nvidia-cg-toolkit and nvidia-cg-dev packages.