From c4393ece4c0a22127588737773fb51e5d66019ff Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Thu, 23 Feb 2023 19:14:12 -0800
Subject: [PATCH] gtk: make clear opengl requirements

---
 src/apprt/gtk.zig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/apprt/gtk.zig b/src/apprt/gtk.zig
index 914a61eb5..26086c382 100644
--- a/src/apprt/gtk.zig
+++ b/src/apprt/gtk.zig
@@ -216,6 +216,10 @@ pub const Surface = struct {
 
     pub fn init(self: *Surface, app: *App, opts: Options) !void {
         const widget = @ptrCast(*c.GtkWidget, opts.gl_area);
+        c.gtk_gl_area_set_required_version(opts.gl_area, 3, 3);
+        c.gtk_gl_area_set_has_stencil_buffer(opts.gl_area, 0);
+        c.gtk_gl_area_set_has_depth_buffer(opts.gl_area, 0);
+        c.gtk_gl_area_set_use_es(opts.gl_area, 0);
 
         // Key event controller will tell us about raw keypress events.
         const ec_key = c.gtk_event_controller_key_new();