From e0caacfa6f510bf4ae839341722eba700d9eb27d Mon Sep 17 00:00:00 2001
From: lightningterror <18107717+lightningterror@users.noreply.github.com>
Date: Fri, 1 Oct 2021 01:22:37 +0200
Subject: [PATCH] GS-hw: Don't write clamped depth test value to depth buffer
 when ZMSK is enabled.

Fixes missing shadows in Kingdom Hearts: Chain of Memories.
---
 pcsx2/GS/Renderers/DX11/GSRendererDX11.cpp  | 2 +-
 pcsx2/GS/Renderers/OpenGL/GSRendererOGL.cpp | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/pcsx2/GS/Renderers/DX11/GSRendererDX11.cpp b/pcsx2/GS/Renderers/DX11/GSRendererDX11.cpp
index 2a7c573251..72c605da81 100644
--- a/pcsx2/GS/Renderers/DX11/GSRendererDX11.cpp
+++ b/pcsx2/GS/Renderers/DX11/GSRendererDX11.cpp
@@ -135,7 +135,7 @@ void GSRendererDX11::EmulateZbuffer()
 		{
 			vs_cb.MaxDepth = GSVector2i(max_z);
 		}
-		else
+		else if (!m_context->ZBUF.ZMSK)
 		{
 			ps_cb.Af_MaxDepth.y = max_z * ldexpf(1, -32);
 			m_ps_sel.zclamp = 1;
diff --git a/pcsx2/GS/Renderers/OpenGL/GSRendererOGL.cpp b/pcsx2/GS/Renderers/OpenGL/GSRendererOGL.cpp
index d8e3486bb6..0bba62cd16 100644
--- a/pcsx2/GS/Renderers/OpenGL/GSRendererOGL.cpp
+++ b/pcsx2/GS/Renderers/OpenGL/GSRendererOGL.cpp
@@ -146,7 +146,7 @@ void GSRendererOGL::EmulateZbuffer()
 		{
 			vs_cb.MaxDepth = GSVector2i(max_z);
 		}
-		else
+		else if (!m_context->ZBUF.ZMSK)
 		{
 			ps_cb.MaxDepth = GSVector4(0.0f, 0.0f, 0.0f, max_z * ldexpf(1, -32));
 			m_ps_sel.zclamp = 1;