detect OpenGL compatibility mode

pkdawson · Jan 10, 2023 · 06b34e5 · 06b34e5
1 parent 33687e0
commit 06b34e5
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Showing 2 changed files with 10 additions and 0 deletions.
diff --git a/addons/imgui-godot/ImGuiGodot/ImGuiGD.cs b/addons/imgui-godot/ImGuiGodot/ImGuiGD.cs
@@ -72,6 +72,12 @@ public static void Init(float? scale = null, RendererType renderer = RendererTyp
             _scale = scale.Value;
         }
 
+        // fall back to Canvas in OpenGL compatibility mode
+        if (renderer == RendererType.RenderingDevice && RenderingServer.GetRenderingDevice() == null)
+        {
+            renderer = RendererType.Canvas;
+        }
+
         Internal.State.Init(renderer switch
         {
             RendererType.Dummy => new Internal.DummyRenderer(),

diff --git a/addons/imgui-godot/ImGuiGodot/Internal/RdRenderer.cs b/addons/imgui-godot/ImGuiGodot/Internal/RdRenderer.cs
@@ -40,6 +40,10 @@ internal class RdRenderer : IRenderer
     public RdRenderer()
     {
         RD = RenderingServer.GetRenderingDevice();
+        if (RD is null)
+        {
+            throw new PlatformNotSupportedException("failed to get RenderingDevice");
+        }
 
         // set up everything to match the official Vulkan backend as closely as possible