From 468d8f841ffcbebf4130371eb64ab04165bce3e9 Mon Sep 17 00:00:00 2001
From: mageven <62494521+mageven@users.noreply.github.com>
Date: Tue, 7 Apr 2020 14:49:45 +0530
Subject: Simple GPU fixes (#1093)

* Implement RasterizeEnable

* Match viewport count to hardware

* Simplify ScissorTest tracking around Blits

* Disable RasterizerDiscard around Blits and track its state

* Read RasterizeEnable reg as bool and add doc
---
 Ryujinx.Graphics.Gpu/Engine/Methods.cs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'Ryujinx.Graphics.Gpu/Engine/Methods.cs')

diff --git a/Ryujinx.Graphics.Gpu/Engine/Methods.cs b/Ryujinx.Graphics.Gpu/Engine/Methods.cs
index 18720440..50913801 100644
--- a/Ryujinx.Graphics.Gpu/Engine/Methods.cs
+++ b/Ryujinx.Graphics.Gpu/Engine/Methods.cs
@@ -108,6 +108,11 @@ namespace Ryujinx.Graphics.Gpu.Engine
                 UpdateShaderState(state);
             }
 
+            if (state.QueryModified(MethodOffset.RasterizeEnable))
+            {
+                UpdateRasterizerState(state);
+            }
+
             if (state.QueryModified(MethodOffset.RtColorState,
                                     MethodOffset.RtDepthStencilState,
                                     MethodOffset.RtControl,
@@ -211,6 +216,16 @@ namespace Ryujinx.Graphics.Gpu.Engine
             CommitBindings();
         }
 
+        /// <summary>
+        /// Updates Rasterizer primitive discard state based on guest gpu state.
+        /// </summary>
+        /// <param name="state">Current GPU state</param>
+        private void UpdateRasterizerState(GpuState state)
+        {
+            Boolean32 enable = state.Get<Boolean32>(MethodOffset.RasterizeEnable);
+            _context.Renderer.Pipeline.SetRasterizerDiscard(!enable);
+        }
+
         /// <summary>
         /// Ensures that the bindings are visible to the host GPU.
         /// Note: this actually performs the binding using the host graphics API.
-- 
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