From 4328d099c41ca10f02e79db1c702e8892ce06071 Mon Sep 17 00:00:00 2001
From: lightningterror <lightningterror@yahoo.com>
Date: Mon, 3 Dec 2018 18:04:18 +0100
Subject: [PATCH] GSdx-d3d: Add support to write in depth buffer.

Add support for dss_write.
Enable writing in depth buffer for dss_write,
when depth conversion is active data will be writen in the depth buffer,
if not then use the old method (don't write).
---
 plugins/GSdx/Renderers/DX11/GSDevice11.cpp | 27 +++++++++++++++++-----
 plugins/GSdx/Renderers/DX11/GSDevice11.h   |  1 +
 2 files changed, 22 insertions(+), 6 deletions(-)

diff --git a/plugins/GSdx/Renderers/DX11/GSDevice11.cpp b/plugins/GSdx/Renderers/DX11/GSDevice11.cpp
index 10d06e25c7..a99537e756 100644
--- a/plugins/GSdx/Renderers/DX11/GSDevice11.cpp
+++ b/plugins/GSdx/Renderers/DX11/GSDevice11.cpp
@@ -221,11 +221,14 @@ bool GSDevice11::Create(const std::shared_ptr<GSWnd> &wnd)
 
 	memset(&dsd, 0, sizeof(dsd));
 
-	dsd.DepthEnable = false;
-	dsd.StencilEnable = false;
-
 	hr = m_dev->CreateDepthStencilState(&dsd, &m_convert.dss);
 
+	dsd.DepthEnable = true;
+	dsd.DepthWriteMask = D3D11_DEPTH_WRITE_MASK_ALL;
+	dsd.DepthFunc = D3D11_COMPARISON_ALWAYS;
+
+	hr = m_dev->CreateDepthStencilState(&dsd, &m_convert.dss_write);
+
 	memset(&bsd, 0, sizeof(bsd));
 
 	bsd.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
@@ -634,7 +637,7 @@ GSTexture* GSDevice11::CopyOffscreen(GSTexture* src, const GSVector4& sRect, int
 		format = DXGI_FORMAT_R8G8B8A8_UNORM;
 	}
 
-	if(format != DXGI_FORMAT_R8G8B8A8_UNORM && format != DXGI_FORMAT_R16_UINT)
+	if(format != DXGI_FORMAT_R8G8B8A8_UNORM && format != DXGI_FORMAT_R16_UINT && format != DXGI_FORMAT_R32_UINT)
 	{
 		ASSERT(0);
 
@@ -696,15 +699,27 @@ void GSDevice11::StretchRect(GSTexture* sTex, const GSVector4& sRect, GSTexture*
 		return;
 	}
 
+	bool draw_in_depth = (ps == m_convert.ps[ShaderConvert_RGBA8_TO_FLOAT32] || ps == m_convert.ps[ShaderConvert_RGBA8_TO_FLOAT24] ||
+		ps == m_convert.ps[ShaderConvert_RGBA8_TO_FLOAT16] || ps == m_convert.ps[ShaderConvert_RGB5A1_TO_FLOAT16]);
+
 	BeginScene();
 
 	GSVector2i ds = dTex->GetSize();
 
 	// om
 
-	OMSetDepthStencilState(m_convert.dss, 0);
+	
+	if (draw_in_depth)
+		OMSetDepthStencilState(m_convert.dss_write, 0);
+	else
+		OMSetDepthStencilState(m_convert.dss, 0);
+
 	OMSetBlendState(bs, 0);
-	OMSetRenderTargets(dTex, NULL);
+
+	if (draw_in_depth)
+		OMSetRenderTargets(NULL, dTex);
+	else
+		OMSetRenderTargets(dTex, NULL);
 
 	// ia
 
diff --git a/plugins/GSdx/Renderers/DX11/GSDevice11.h b/plugins/GSdx/Renderers/DX11/GSDevice11.h
index e6b1dd6d5e..9ae5ec47da 100644
--- a/plugins/GSdx/Renderers/DX11/GSDevice11.h
+++ b/plugins/GSdx/Renderers/DX11/GSDevice11.h
@@ -97,6 +97,7 @@ public: // TODO
 		CComPtr<ID3D11SamplerState> ln;
 		CComPtr<ID3D11SamplerState> pt;
 		CComPtr<ID3D11DepthStencilState> dss;
+		CComPtr<ID3D11DepthStencilState> dss_write;
 		CComPtr<ID3D11BlendState> bs;
 	} m_convert;