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"RenderTexture.GenerateMips failed"
I'm getting a steady stream of this error since updating to Insider Preview 16257. It's related to Unity's internal render process, not my code. Any ideas?
RenderTexture.GenerateMips failed: render texture does not have mip maps (set useMipMap to true).
UnityEditor.EditorGUIUtility:INTERNAL_CALL_RenderGameViewCamerasInternal(RenderTexture, Int32, Rect&, Vector2&, Boolean)
UnityEditor.EditorGUIUtility:RenderGameViewCamerasInternal(RenderTexture, Int32, Rect, Vector2, Boolean) (at C:\buildslave\unity\build\artifacts\generated\common\editor\EditorGUIUtilityBindings.gen.cs:642)
UnityEditor.GameView:OnGUI() (at C:\buildslave\unity\build\Editor\Mono\GameView\GameView.cs:747)
System.Reflection.MonoMethod:InternalInvoke(Object, Object[], Exception&)
System.Reflection.MonoMethod:Invoke(Object, BindingFlags, Binder, Object[], CultureInfo) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)
System.Reflection.MethodBase:Invoke(Object, Object[]) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MethodBase.cs:115)
UnityEditor.HostView:Invoke(String, Object) (at C:\buildslave\unity\build\Editor\Mono\HostView.cs:283)
UnityEditor.HostView:Invoke(String) (at C:\buildslave\unity\build\Editor\Mono\HostView.cs:276)
UnityEditor.HostView:InvokeOnGUI(Rect) (at C:\buildslave\unity\build\Editor\Mono\HostView.cs:243)
UnityEditor.DockArea:OldOnGUI() (at C:\buildslave\unity\build\Editor\Mono\GUI\DockArea.cs:383)
UnityEngine.Experimental.UIElements.IMGUIContainer:DoOnGUI(Event) (at C:\buildslave\unity\build\Runtime\UIElements\Managed\IMGUIContainer.cs:127)
UnityEngine.Experimental.UIElements.IMGUIContainer:HandleEvent(EventBase) (at C:\buildslave\unity\build\Runtime\UIElements\Managed\IMGUIContainer.cs:213)
UnityEngine.Experimental.UIElements.IMGUIContainer:DoRepaint(IStylePainter) (at C:\buildslave\unity\build\Runtime\UIElements\Managed\IMGUIContainer.cs:50)
UnityEngine.Experimental.UIElements.Panel:PaintSubTree(Event, VisualElement, Matrix4x4, Rect) (at C:\buildslave\unity\build\Runtime\UIElements\Managed\Panel.cs:447)
UnityEngine.Experimental.UIElements.Panel:PaintSubTree(Event, VisualElement, Matrix4x4, Rect) (at C:\buildslave\unity\build\Runtime\UIElements\Managed\Panel.cs:457)
UnityEngine.Experimental.UIElements.Panel:Repaint(Event) (at C:\buildslave\unity\build\Runtime\UIElements\Managed\Panel.cs:474)
UnityEngine.Experimental.UIElements.UIElementsUtility:DoDispatch(BaseVisualElementPanel) (at C:\buildslave\unity\build\Runtime\UIElements\Managed\UIElementsUtility.cs:192)
UnityEngine.Experimental.UIElements.UIElementsUtility:ProcessEvent(Int32, IntPtr) (at C:\buildslave\unity\build\Runtime\UIElements\Managed\UIElementsUtility.cs:72)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr) (at C:\buildslave\unity\build\Runtime\IMGUI\Managed\GUIUtility.cs:175)
Answers
I am getting the RenderTexture.GenerateMips failed: render texture does not have mip maps (set useMipMap to true). error with 2017.1p5 with a project I updated from 5.1
It seems to impact frame rate as well
This issue is something we have seen on Unity 2017.2 as well. It's a benign issue, seems to be a regression bug. I am assuming it made it's way into 2017.1.0p5 during the patch build.
You might comment on this issue so that they know it's now showing up in 2017.1
https://forum.unity3d.com/threads/beta-7-case-943170-windows-mixed-reality-far-clip-and-rendertexture-generatemips-error.488714/