File pcsx2-PR3444.patch of Package pcsx2-git

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File pcsx2-PR3444.patch of Package pcsx2-git (Revision 947379d5b13dc7537dd8576daa574100)

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From beda6969ee3a8c40f1f4da47c851a24ce17fff8a Mon Sep 17 00:00:00 2001
From: Kojin <kojin@protonmail.com>
Date: Sat, 6 Jun 2020 12:10:53 -0400
Subject: [PATCH] mgs workarounds

---
 plugins/GSdx/Renderers/Common/GSRenderer.cpp | 10 +++++-----
 plugins/GSdx/Renderers/SW/GSRasterizer.cpp   |  7 +++++--
 plugins/GSdx/Renderers/SW/GSRasterizer.h     |  2 ++
 plugins/GSdx/Renderers/SW/GSRendererSW.cpp   |  1 +
 4 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/plugins/GSdx/Renderers/Common/GSRenderer.cpp b/plugins/GSdx/Renderers/Common/GSRenderer.cpp
index e2881bb488..cedd6916fe 100644
--- a/plugins/GSdx/Renderers/Common/GSRenderer.cpp
+++ b/plugins/GSdx/Renderers/Common/GSRenderer.cpp
@@ -222,7 +222,7 @@ bool GSRenderer::Merge(int field)
 			off.x = tex[i]->GetScale().x * frame_diff.x;
 		}
 
-		if(display_diff.y >= 4) // Shouldn't this be >= 2?
+		if(display_diff.y) // Shouldn't this be >= 2?
 		{
 			off.y = tex[i]->GetScale().y * display_diff.y;
 
@@ -231,10 +231,10 @@ bool GSRenderer::Merge(int field)
 				off.y /= 2;
 			}
 		}
-		else if(display_diff.y != frame_diff.y)
-		{
-			off.y = tex[i]->GetScale().y * frame_diff.y;
-		}
+		//else if(display_diff.y != frame_diff.y)
+		//{
+		//	off.y = tex[i]->GetScale().y * frame_diff.y;
+		//}
 
 		dst[i] = GSVector4(off).xyxy() + scale * GSVector4(r.rsize());
 
diff --git a/plugins/GSdx/Renderers/SW/GSRasterizer.cpp b/plugins/GSdx/Renderers/SW/GSRasterizer.cpp
index c547c61488..a96bd0462a 100644
--- a/plugins/GSdx/Renderers/SW/GSRasterizer.cpp
+++ b/plugins/GSdx/Renderers/SW/GSRasterizer.cpp
@@ -155,6 +155,7 @@ void GSRasterizer::Draw(GSRasterizerData* data)
 	bool scissor_test = !data->bbox.eq(data->bbox.rintersect(data->scissor));
 
 	m_scissor = data->scissor;
+	m_scanline_mask = data->scanline_mask;
 	m_fscissor_x = GSVector4(data->scissor).xzxz();
 	m_fscissor_y = GSVector4(data->scissor).ywyw();
 
@@ -1086,8 +1087,10 @@ void GSRasterizer::Flush(const GSVertexSW* vertex, const uint32* index, const GS
 				int pixels = e->_pad.i32[0];
 				int left = e->_pad.i32[1];
 				int top = e->_pad.i32[2];
-
-				DrawScanline(pixels, left, top, *e++);
+				if (!m_scanline_mask || m_scanline_mask == 3 && (top & 1) == 1 || m_scanline_mask == 2 && (top & 1) == 0)
+					DrawScanline(pixels, left, top, *e++);
+				else
+					*e++;
 			}
 			while(e < ee);
 		}
diff --git a/plugins/GSdx/Renderers/SW/GSRasterizer.h b/plugins/GSdx/Renderers/SW/GSRasterizer.h
index 15857ec958..2023d9e84d 100644
--- a/plugins/GSdx/Renderers/SW/GSRasterizer.h
+++ b/plugins/GSdx/Renderers/SW/GSRasterizer.h
@@ -33,6 +33,7 @@ class alignas(32) GSRasterizerData : public GSAlignedClass<32>
 	static int s_counter;
 
 public:
+	int scanline_mask;
 	GSVector4i scissor;
 	GSVector4i bbox;
 	GS_PRIM_CLASS primclass;
@@ -136,6 +137,7 @@ class alignas(32) GSRasterizer : public IRasterizer
 	GSVector4 m_fscissor_y;
 	struct {GSVertexSW* buff; int count;} m_edge;
 	struct {int sum, actual, total;} m_pixels;
+	int m_scanline_mask;
 
 	typedef void (GSRasterizer::*DrawPrimPtr)(const GSVertexSW* v, int count);
 
diff --git a/plugins/GSdx/Renderers/SW/GSRendererSW.cpp b/plugins/GSdx/Renderers/SW/GSRendererSW.cpp
index d7cd5d936f..f1119d9b95 100644
--- a/plugins/GSdx/Renderers/SW/GSRendererSW.cpp
+++ b/plugins/GSdx/Renderers/SW/GSRendererSW.cpp
@@ -398,6 +398,7 @@ void GSRendererSW::Draw()
 	sd->vertex_count = m_vertex.next;
 	sd->index = (uint32*)(sd->buff + sizeof(GSVertexSW) * ((m_vertex.next + 1) & ~1));
 	sd->index_count = m_index.tail;
+	sd->scanline_mask = m_env.SCANMSK.MSK;
 
 	// skip per pixel division if q is constant.
 	// Optimize the division by 1 with a nop. It also means that GS_SPRITE_CLASS must be processed when !m_vt.m_eq.q.

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File pcsx2-PR3444.patch of Package pcsx2-git (Revision 947379d5b13dc7537dd8576daa574100)

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