From 0f8f08edfd5c9657f5429ad332ad57fe2ec4a53e Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@zdoom.fake>
Date: Tue, 3 May 2016 19:24:28 +0200
Subject: [PATCH] - fixed: camera facing sprites need to orient themselves
 toward the actual camera position, not the view actor (which may be invalid
 or in a completely different part of the map if a portal is being rendered.)

---
 src/gl/scene/gl_sprite.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/gl/scene/gl_sprite.cpp b/src/gl/scene/gl_sprite.cpp
index 3f90b251e..c85de8a0d 100644
--- a/src/gl/scene/gl_sprite.cpp
+++ b/src/gl/scene/gl_sprite.cpp
@@ -287,8 +287,8 @@ void GLSprite::Draw(int pass)
 				if (drawBillboardFacingCamera) {
 					// [CMB] Rotate relative to camera XY position, not just camera direction,
 					// which is nicer in VR
-					float xrel = xcenter - GLRenderer->mViewActor->X();
-					float yrel = ycenter - GLRenderer->mViewActor->Y();
+					float xrel = xcenter - ViewPos.X;
+					float yrel = ycenter - ViewPos.Y;
 					float absAngleDeg = RAD2DEG(atan2(-yrel, xrel));
 					float counterRotationDeg = 270. - GLRenderer->mAngles.Yaw.Degrees; // counteracts existing sprite rotation
 					float relAngleDeg = counterRotationDeg + absAngleDeg;