From fa4d86b16770c593680d9b40fe5eb5eebbbbf9d7 Mon Sep 17 00:00:00 2001
From: Dzmitry Malyshau <kvark@fastmail.com>
Date: Tue, 30 Nov 2021 13:19:21 -0500
Subject: [PATCH] hal/gles: error on given context below 3.0

---
 wgpu-hal/src/gles/adapter.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/wgpu-hal/src/gles/adapter.rs b/wgpu-hal/src/gles/adapter.rs
index d42e09b5c4..5f1c036a44 100644
--- a/wgpu-hal/src/gles/adapter.rs
+++ b/wgpu-hal/src/gles/adapter.rs
@@ -189,6 +189,14 @@ impl super::Adapter {
         log::debug!("Extensions: {:#?}", extensions);
 
         let ver = Self::parse_version(&version).ok()?;
+        if ver < (3, 0) {
+            log::warn!(
+                "Returned GLES context is {}.{}, when 3.0+ was requested",
+                ver.0,
+                ver.1
+            );
+            return None;
+        }
 
         let supports_storage = ver >= (3, 1);
         let supports_work_group_params = ver >= (3, 1);