From b1a392a45ff0dc6876622d00962aef9270ca5e81 Mon Sep 17 00:00:00 2001
From: ImJezze <jezze@gmx.net>
Date: Sat, 12 Mar 2016 19:17:57 +0100
Subject: [PATCH] Fixed mask orientation for vector screen

---
 hlsl/post.fx | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/hlsl/post.fx b/hlsl/post.fx
index 77344113d0b..0bf2fcdc7f5 100644
--- a/hlsl/post.fx
+++ b/hlsl/post.fx
@@ -132,7 +132,7 @@ uniform float ScanlineHeight = 1.0f;
 
 uniform float3 BackColor = float3(0.0f, 0.0f, 0.0f);
 
-uniform int ShadowTileMode = 0; // 0 based on screen dimension, 1 based on source dimension
+uniform int ShadowTileMode = 0; // 0 based on screen (quad) dimension, 1 based on source dimension
 uniform float ShadowAlpha = 0.0f;
 uniform float2 ShadowCount = float2(6.0f, 6.0f);
 uniform float2 ShadowUV = float2(0.25f, 0.25f);
@@ -174,17 +174,26 @@ float2 GetShadowCoord(float2 QuadCoord, float2 SourceCoord)
 	float2 shadowUV = ShadowUV;
 	float2 shadowCount = ShadowCount;
 
-	canvasCoord = !VectorScreen && ShadowTileMode == 0 && SwapXY
+	// swap x/y vector and raster in screen mode (not source mode)
+	canvasCoord = ShadowTileMode == 0 && SwapXY
 		? canvasCoord.yx
 		: canvasCoord.xy;
 
-	shadowCount = !VectorScreen && ShadowTileMode == 0 && SwapXY
+	// swap x/y vector and raster in screen mode (not source mode)
+	shadowCount = ShadowTileMode == 0 && SwapXY
 		? shadowCount.yx
 		: shadowCount.xy;
 
 	float2 shadowTile = canvasTexelDims * shadowCount;
 
+	// swap x/y vector in screen mode (not raster and not source mode)
+	shadowTile = VectorScreen && ShadowTileMode == 0 && SwapXY
+		? shadowTile.yx
+		: shadowTile.xy;
+
 	float2 shadowFrac = frac(canvasCoord / shadowTile);
+
+	// swap x/y raster in screen mode (not vector and not source mode)
 	shadowFrac = !VectorScreen && ShadowTileMode == 0 && SwapXY
 		? shadowFrac.yx
 		: shadowFrac.xy;