From 049fc5fb7ce32025fc96a1f9b3b12b69d9cdc0d8 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@users.noreply.github.com>
Date: Thu, 13 Jan 2022 00:59:17 +0100
Subject: [PATCH] - proper maintenance of the depth bias state.

Change state must be combined, not overwritten, or it may miss some needed state changes.
---
 source/common/rendering/hwrenderer/data/hw_renderstate.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/source/common/rendering/hwrenderer/data/hw_renderstate.h b/source/common/rendering/hwrenderer/data/hw_renderstate.h
index 5b4af5681..bd8fd4d9e 100644
--- a/source/common/rendering/hwrenderer/data/hw_renderstate.h
+++ b/source/common/rendering/hwrenderer/data/hw_renderstate.h
@@ -585,7 +585,7 @@ public:
 
 	void SetDepthBias(float a, float b)
 	{
-		mBias.mChanged = mBias.mFactor != a || mBias.mUnits != b;
+		mBias.mChanged |= mBias.mFactor != a || mBias.mUnits != b;
 		mBias.mFactor = a;
 		mBias.mUnits = b;
 	}
@@ -597,7 +597,7 @@ public:
 
 	void ClearDepthBias()
 	{
-		mBias.mChanged = mBias.mFactor != 0 || mBias.mUnits != 0;
+		mBias.mChanged |= mBias.mFactor != 0 || mBias.mUnits != 0;
 		mBias.mFactor = 0;
 		mBias.mUnits = 0;
 	}