ERROR: unsupported shader version

[Hikmat-E-Ustad]

I am running macOS Catalina 10.15.7 on a 2.3 GHz Dual Core Intel Core i5 processor.

Initially I had installed qemu directly from homebrew. When I tried installing brew tap knazarov/qemu-virgl and then brew install qemu-virgl I ran into some error which I resolved by first uninstalling qemu then installing qemu-virgl.

When I run with your config provided for Intel I get the following error

`hikmateustad@Hikmats-MacBook-Pro Fedora % ./start-fedora-1.sh
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.fma [bit 12]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.x2apic [bit 21]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.movbe [bit 22]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.tsc-deadline [bit 24]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.f16c [bit 29]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.rdrand [bit 30]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.fsgsbase [bit 0]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.bmi1 [bit 3]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.avx2 [bit 5]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.smep [bit 7]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.bmi2 [bit 8]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.erms [bit 9]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.invpcid [bit 10]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EDX.spec-ctrl [bit 26]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:EDX.rdtscp [bit 27]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.abm [bit 5]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.fma [bit 12]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.x2apic [bit 21]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.movbe [bit 22]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.tsc-deadline [bit 24]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.f16c [bit 29]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.rdrand [bit 30]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.fsgsbase [bit 0]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.bmi1 [bit 3]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.avx2 [bit 5]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.smep [bit 7]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.bmi2 [bit 8]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.erms [bit 9]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.invpcid [bit 10]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EDX.spec-ctrl [bit 26]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:EDX.rdtscp [bit 27]
qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.abm [bit 5]
qemu_gl_create_compile_shader: compile vertex error
ERROR: unsupported shader version

qemu_gl_create_compile_shader: compile fragment error
ERROR: unsupported shader version

qemu_gl_create_compile_shader: compile vertex error
ERROR: unsupported shader version

qemu_gl_create_compile_shader: compile fragment error
ERROR: unsupported shader version

`

When I tried a slightly modified config

qemu-system-x86_64 \ -machine accel=hvf \ -device intel-hda -device hda-output \ -device qemu-xhci \ -device virtio-vga-gl \ -device usb-kbd \ -device virtio-net-pci,netdev=net \ -device virtio-mouse-pci \ -display cocoa,gl=es \ -netdev user,id=net,ipv6=off \ -drive "if=virtio,format=raw,file=hdd.raw,discard=on" \ -cdrom Fedora-Workstation-Live-x86_64-34-1.2.iso \ -m 4G \ -smp 2 \ -cpu host \ -boot d

I just get the following errors

`hikmateustad@Hikmats-MacBook-Pro Fedora % ./start-fedora.sh
qemu_gl_create_compile_shader: compile vertex error
ERROR: unsupported shader version

qemu_gl_create_compile_shader: compile fragment error
ERROR: unsupported shader version

qemu_gl_create_compile_shader: compile vertex error
ERROR: unsupported shader version

qemu_gl_create_compile_shader: compile fragment error
ERROR: unsupported shader version

`

I have tried brew reinstall -s libepoxy-angle however it fails at the symlink stage with the following error

`

hikmateustad@Hikmats-MacBook-Pro ~ % brew reinstall -s libepoxy-angle
==> Downloading https://raw.githubusercontent.com/knazarov/homebrew-qemu-virgl/8
Already downloaded: /Users/hikmateustad/Library/Caches/Homebrew/downloads/e4c735fb957a1dd43d83eeb08f77721ee4d566ed81e049d169173d29460bc400--libepoxy-v02.diff
==> Cloning https://github.com/anholt/libepoxy.git
Updating /Users/hikmateustad/Library/Caches/Homebrew/libepoxy-angle--git
==> Checking out revision de08cf3479ca06ff921c584eeee6280e5a135f99
HEAD is now at de08cf3 Merge pull request #238 from anholt/pull-229-alt
HEAD is now at de08cf3 Merge pull request #238 from anholt/pull-229-alt
==> Reinstalling knazarov/qemu-virgl/libepoxy-angle
==> Patching
==> Applying libepoxy-v02.diff
patching file meson.build
patching file meson_options.txt
patching file src/dispatch_common.c
patching file src/dispatch_common.h
==> meson --prefix=/usr/local/Cellar/libepoxy-angle/20210315.1 --libdir=/usr/loc
==> ninja -v
==> ninja install -v
Error: The brew link step did not complete successfully
The formula built, but is not symlinked into /usr/local
Could not symlink include/epoxy/common.h
Target /usr/local/include/epoxy/common.h
is a symlink belonging to libepoxy. You can unlink it:
brew unlink libepoxy

To force the link and overwrite all conflicting files:
brew link --overwrite libepoxy-angle

To list all files that would be deleted:
brew link --overwrite --dry-run libepoxy-angle

Possible conflicting files are:
/usr/local/include/epoxy/common.h -> /usr/local/Cellar/libepoxy/1.5.9/include/epoxy/common.h
/usr/local/include/epoxy/gl.h -> /usr/local/Cellar/libepoxy/1.5.9/include/epoxy/gl.h
/usr/local/include/epoxy/gl_generated.h -> /usr/local/Cellar/libepoxy/1.5.9/include/epoxy/gl_generated.h
/usr/local/lib/libepoxy.0.dylib -> /usr/local/Cellar/libepoxy/1.5.9/lib/libepoxy.0.dylib
/usr/local/lib/libepoxy.dylib -> /usr/local/Cellar/libepoxy/1.5.9/lib/libepoxy.dylib
/usr/local/lib/pkgconfig/epoxy.pc -> /usr/local/Cellar/libepoxy/1.5.9/lib/pkgconfig/epoxy.pc
==> Summary
🍺 /usr/local/Cellar/libepoxy-angle/20210315.1: 12 files, 2.6MB, built in 1 minute 35 seconds
==> Running brew cleanup libepoxy-angle...
Disable this behaviour by setting HOMEBREW_NO_INSTALL_CLEANUP.
Hide these hints with HOMEBREW_NO_ENV_HINTS (see man brew).

`

When I tried to manually symlink it then I get the following errors

`hikmateustad@Hikmats-MacBook-Pro ~ % brew link libepoxy-angle
Linking /usr/local/Cellar/libepoxy-angle/20210315.1...
Error: Could not symlink include/epoxy/common.h
Target /usr/local/include/epoxy/common.h
is a symlink belonging to libepoxy. You can unlink it:
brew unlink libepoxy

To force the link and overwrite all conflicting files:
brew link --overwrite libepoxy-angle

To list all files that would be deleted:
brew link --overwrite --dry-run libepoxy-angle
hikmateustad@Hikmats-MacBook-Pro ~ % brew link --overwrite --dry-run libepoxy-angle
Would remove:
/usr/local/include/epoxy/common.h -> /usr/local/Cellar/libepoxy/1.5.9/include/epoxy/common.h
/usr/local/include/epoxy/gl.h -> /usr/local/Cellar/libepoxy/1.5.9/include/epoxy/gl.h
/usr/local/include/epoxy/gl_generated.h -> /usr/local/Cellar/libepoxy/1.5.9/include/epoxy/gl_generated.h
/usr/local/lib/libepoxy.0.dylib -> /usr/local/Cellar/libepoxy/1.5.9/lib/libepoxy.0.dylib
/usr/local/lib/libepoxy.dylib -> /usr/local/Cellar/libepoxy/1.5.9/lib/libepoxy.dylib
/usr/local/lib/pkgconfig/epoxy.pc -> /usr/local/Cellar/libepoxy/1.5.9/lib/pkgconfig/epoxy.pc

`

What steps should I take?

[knazarov]

I'm going to release a new version with an updated libangle backend and latest fixes to qemu-virgl. Let's see if it works for you. The patch is already in progress.