From ff2aac0f31b2532e6b4ab349a712c47541c92eb3 Mon Sep 17 00:00:00 2001
From: Kirill Chibisov <contact@kchibisov.com>
Date: Fri, 22 Dec 2023 02:00:33 +0400
Subject: [PATCH] egl: set context version when egl < 1.5

Signed-off-by: p0ryae <theporyafm12@gmail.com>
Fixes #1647.
---
 CHANGELOG.md                  | 2 ++
 glutin/src/api/egl/context.rs | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 368aa0a386..c33c607a4d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Unreleased
 
+- Fixed EGL not setting context version with EGL versions before 1.5 and missing context ext.
+
 # Version 0.31.1
 
 - Fixed `CGLContextObj` having an invalid encoding on newer macOS versions.
diff --git a/glutin/src/api/egl/context.rs b/glutin/src/api/egl/context.rs
index 04f0d0e43b..bf26d6dae2 100644
--- a/glutin/src/api/egl/context.rs
+++ b/glutin/src/api/egl/context.rs
@@ -117,6 +117,12 @@ impl Display {
                 attrs.push(egl::CONTEXT_FLAGS_KHR as EGLint);
                 attrs.push(flags as EGLint);
             }
+        } else if self.inner.version >= Version::new(1, 3) {
+            // EGL 1.3 uses that to indicate client version instead of major/minor.
+            if let Some(version) = version {
+                attrs.push(egl::CONTEXT_CLIENT_VERSION as EGLint);
+                attrs.push(version.major as EGLint);
+            }
         }
 
         attrs.push(egl::NONE as EGLint);