From 464ce1c3cd68a3a11bcacf6acff1c76b7a0a3675 Mon Sep 17 00:00:00 2001
From: lightningterror <18107717+lightningterror@users.noreply.github.com>
Date: Sun, 5 Dec 2021 05:55:57 +0100
Subject: [PATCH] GS-d3d11: Sample depth on green channel.

---
 pcsx2/GS/Renderers/DX11/GSRendererDX11.cpp |  2 +-
 pcsx2/GS/res/tfx.fx                        | 23 ++++++++++++++++------
 2 files changed, 18 insertions(+), 7 deletions(-)

diff --git a/pcsx2/GS/Renderers/DX11/GSRendererDX11.cpp b/pcsx2/GS/Renderers/DX11/GSRendererDX11.cpp
index a845021ffc..537c70291c 100644
--- a/pcsx2/GS/Renderers/DX11/GSRendererDX11.cpp
+++ b/pcsx2/GS/Renderers/DX11/GSRendererDX11.cpp
@@ -375,7 +375,7 @@ void GSRendererDX11::EmulateChannelShuffle(GSTexture** rt, const GSTextureCache:
 					case 0xE0: blue_shift = 5; break;
 					case 0xC0: blue_shift = 6; break;
 					case 0x80: blue_shift = 7; break;
-					default:   ASSERT(0);      break;
+					default:                   break;
 				}
 
 				const int green_shift = 8 - blue_shift;
diff --git a/pcsx2/GS/res/tfx.fx b/pcsx2/GS/res/tfx.fx
index 8c22dcccca..dc77091a08 100644
--- a/pcsx2/GS/res/tfx.fx
+++ b/pcsx2/GS/res/tfx.fx
@@ -410,6 +410,23 @@ float4 fetch_red(int2 xy)
 	return sample_p(rt.r) * 255.0f;
 }
 
+float4 fetch_green(int2 xy)
+{
+	float4 rt;
+
+	if ((PS_DEPTH_FMT == 1) || (PS_DEPTH_FMT == 2))
+	{
+		int depth = (fetch_raw_depth(xy) >> 8) & 0xFF;
+		rt = (float4)(depth) / 255.0f;
+	}
+	else
+	{
+		rt = fetch_raw_color(xy);
+	}
+
+	return sample_p(rt.g) * 255.0f;
+}
+
 float4 fetch_blue(int2 xy)
 {
 	float4 rt;
@@ -427,12 +444,6 @@ float4 fetch_blue(int2 xy)
 	return sample_p(rt.b) * 255.0f;
 }
 
-float4 fetch_green(int2 xy)
-{
-	float4 rt = fetch_raw_color(xy);
-	return sample_p(rt.g) * 255.0f;
-}
-
 float4 fetch_alpha(int2 xy)
 {
 	float4 rt = fetch_raw_color(xy);