From 80745f32b3d755bb9973377f78332ecfaec32360 Mon Sep 17 00:00:00 2001
From: BabbleBones <BabbleBones@protonmail.com>
Date: Tue, 29 Aug 2023 23:30:20 -0400
Subject: [PATCH] d/steamvr_lh: Fix zero IPD read

---
 src/xrt/drivers/steamvr_lh/device.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/xrt/drivers/steamvr_lh/device.cpp b/src/xrt/drivers/steamvr_lh/device.cpp
index 157b07447..0bd8f887d 100644
--- a/src/xrt/drivers/steamvr_lh/device.cpp
+++ b/src/xrt/drivers/steamvr_lh/device.cpp
@@ -713,7 +713,9 @@ HmdDevice::handle_property_write(const vr::PropertyWrite_t &prop)
 		break;
 	}
 	case vr::Prop_UserIpdMeters_Float: {
-		ipd = *static_cast<float *>(prop.pvBuffer);
+		if (*static_cast<float *>(prop.pvBuffer) != 0) {
+			ipd = *static_cast<float *>(prop.pvBuffer);
+		}
 		break;
 	}
 	case vr::Prop_SecondsFromVsyncToPhotons_Float: {