From 20a9514aa221803d906abe310b04e0490d9d5a32 Mon Sep 17 00:00:00 2001
From: Ian Curtis <i.curtis@gmail.com>
Date: Thu, 15 Dec 2016 19:27:08 +0000
Subject: [PATCH] For scroll fog set the viewport to the entire area, allows
 fog to work in widescreen mode

---
 Src/Graphics/New3D/New3D.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/Src/Graphics/New3D/New3D.cpp b/Src/Graphics/New3D/New3D.cpp
index 1ca0d6e..48b92cd 100644
--- a/Src/Graphics/New3D/New3D.cpp
+++ b/Src/Graphics/New3D/New3D.cpp
@@ -91,6 +91,7 @@ void CNew3D::DrawScrollFog()
 			if (n.viewport.scrollFog > 0 && n.viewport.priority == i) {	
 
 				float *rgb = n.viewport.fogParams;
+				glViewport(0, 0, m_totalXRes, m_totalYRes);		// fill the whole viewport
 				m_r3dScrollFog.DrawScrollFog(rgb[0], rgb[1], rgb[2], n.viewport.scrollFog);
 				return;
 			}
@@ -769,6 +770,9 @@ void CNew3D::RenderViewport(UINT32 addr)
 
 		vp->scrollFog = (float)(vpnode[0x20] & 0xFF) * (1.0f / 255.0f);				// scroll fog
 
+		// Unknown light/fog parameters
+		float scrollAtt = (float)(vpnode[0x24] & 0xFF) * (1.0f / 255.0f);			// scroll attenuation
+
 		{
 			//test fog paramaters
 			float lightFogColour[3];
@@ -789,9 +793,6 @@ void CNew3D::RenderViewport(UINT32 addr)
 			vp->fogParams[3] = vp->fogParams[4] = 0.0f;
 		}
 
-		// Unknown light/fog parameters
-		float scrollAtt = (float)(vpnode[0x24] & 0xFF) * (1.0f / 255.0f);	// scroll attenuation
-
 		// Clear texture offsets before proceeding
 		m_nodeAttribs.Reset();