From 16e8115e7749ee99fd59b480c6ebdbc0f5dbc001 Mon Sep 17 00:00:00 2001
From: Martin Wimpress <martin@wimpress.org>
Date: Fri, 10 May 2024 01:45:52 +0100
Subject: [PATCH] fix(quickemu): detect GLSL version and enable GL accordingly.
 close #920

---
 debian/control | 1 +
 devshell.nix   | 2 ++
 package.nix    | 2 ++
 quickemu       | 6 +++++-
 4 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/debian/control b/debian/control
index d409b989a9..c73e1432b1 100644
--- a/debian/control
+++ b/debian/control
@@ -17,6 +17,7 @@ Depends:
  curl,
  genisoimage,
  jq,
+ mesa-utils,
  pciutils
  procps,
  python3-minimal,
diff --git a/devshell.nix b/devshell.nix
index b455a4e1e0..5b7b91187a 100644
--- a/devshell.nix
+++ b/devshell.nix
@@ -3,6 +3,7 @@
   cdrtools,
   curl,
   git,
+  glxinfo
   gnugrep,
   gnused,
   jq,
@@ -29,6 +30,7 @@ mkShell {
     cdrtools
     curl
     git
+    glxinfo
     gnugrep
     gnused
     jq
diff --git a/package.nix b/package.nix
index 742ab1efb3..32963d8f0d 100644
--- a/package.nix
+++ b/package.nix
@@ -6,6 +6,7 @@
 , testers
 , cdrtools
 , curl
+, glxinfo
 , gnugrep
 , gnused
 , jq
@@ -30,6 +31,7 @@ let
   runtimePaths = [
     cdrtools
     curl
+    glxinfo
     gnugrep
     gnused
     jq
diff --git a/quickemu b/quickemu
index 39009f33bb..b229d38f12 100755
--- a/quickemu
+++ b/quickemu
@@ -1872,7 +1872,11 @@ if [ -n "${VM}" ] && [ -e "${VM}" ]; then
 
     # Set the default 3D acceleration.
     if [ -z "${gl}" ]; then
-        gl="on"
+        GLSL_VER=$(glxinfo | grep "OpenGL ES GLSL" | awk '{print $NF}')
+        case ${GLSL_VER} in
+            1*|2*) gl="off";;
+            *) gl="on";;
+        esac
     fi
 
     if [ -z "${PUBLIC}" ]; then