From 25cf60c4c527c36e7407ff001d89b9bf67706574 Mon Sep 17 00:00:00 2001
From: Jon Beniston <jon@beniston.com>
Date: Mon, 16 May 2022 12:43:07 +0100
Subject: [PATCH] Warn if OpenGL is < 2.1, rather than 3.0, as it runs fine
 with 2.1

---
 sdrgui/mainwindow.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sdrgui/mainwindow.cpp b/sdrgui/mainwindow.cpp
index 5c108f105..71f90830d 100644
--- a/sdrgui/mainwindow.cpp
+++ b/sdrgui/mainwindow.cpp
@@ -1393,8 +1393,8 @@ QString MainWindow::openGLVersion()
             int minor = glCurrentContext->format().minorVersion();
             bool es = glCurrentContext->isOpenGLES();
             QString version = QString("%1.%2%3").arg(major).arg(minor).arg(es ? " ES" : "");
-            // Waterfall doesn't work if major version is less than 3, so display in red
-            if (major < 3) {
+            // Waterfall doesn't work if version is less than 2.1, so display in red
+            if ((major < 2) || ((major == 2) && (minor == 0))) {
                 version = "<span style=\"color:red\">" + version + "</span>";
             }
             return version;