From d807442afcceb77cbf4858171011405bab7b7946 Mon Sep 17 00:00:00 2001
From: T0NZ <tonzsm@gmail.com>
Date: Fri, 17 Jul 2026 17:04:07 +0700
Subject: [PATCH] Fix build against ImGui >= 1.92.8 (ImLerp cannot take
 ImOffsetRect)

Added ImLerp overload for ImOffsetRect to support new ImGui version.
---
 imgui_offset_rect.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/imgui_offset_rect.h b/imgui_offset_rect.h
index e01738c..4e7698f 100644
--- a/imgui_offset_rect.h
+++ b/imgui_offset_rect.h
@@ -39,3 +39,13 @@ static inline ImOffsetRect operator+(const ImOffsetRect& lhs, const ImOffsetRect
 static inline ImOffsetRect operator-(const ImOffsetRect& lhs, const ImOffsetRect& rhs) { return ImOffsetRect(lhs.Top - rhs.Top, lhs.Left - rhs.Left, lhs.Bottom - rhs.Bottom, lhs.Right - rhs.Right); }
 static inline ImOffsetRect operator*(const ImOffsetRect& lhs, const ImOffsetRect& rhs) { return ImOffsetRect(lhs.Top * rhs.Top, lhs.Left * rhs.Left, lhs.Bottom * rhs.Bottom, lhs.Right * rhs.Right); }
 IM_MSVC_RUNTIME_CHECKS_RESTORE
+
+// ImGui 1.92.8 (19274) changed the generic ImLerp to `(T)((float)a + (float)(b - a) * t)`, which needs a
+// T -> float conversion. ImOffsetRect only converts the other way (its float constructor), so the
+// template fails to instantiate and imgui_toggle_renderer.cpp's KnobInset/KnobOffset lerps stop
+// compiling. An exact-match overload wins over the template and keeps the same component-wise result.
+#if IMGUI_VERSION_NUM >= 19274
+IM_MSVC_RUNTIME_CHECKS_OFF
+static inline ImOffsetRect ImLerp(ImOffsetRect a, ImOffsetRect b, float t) { return (a + (b - a) * t); }
+IM_MSVC_RUNTIME_CHECKS_RESTORE
+#endif // IMGUI_VERSION_NUM >= 19274