From dc0dbc50abdaedfdcca05e5a5c1a5f26f70e3b79 Mon Sep 17 00:00:00 2001
From: cstamford <christopherstamford@improbable.io>
Date: Sun, 28 May 2023 22:31:56 +0100
Subject: Add support for VK_EXT_depth_clip_control. (#5027)

* Add support for VK_EXT_depth_clip_control.

* Code review feedback

Minor formatting

Co-authored-by: gdkchan <gab.dark.100@gmail.com>

* Check .DepthClipControl to make sure the host actually supports the feature.

* Review feedback: remove Vulkan platform switch, relying on QueryHostSupportsDepthClipControl to drive the behaviour - OpenGL returns true, and any future platforms that don't support the [-1, 1] depth mode can return false for the transformation.

---------

Co-authored-by: gdkchan <gab.dark.100@gmail.com>
---
 src/Ryujinx.Graphics.Vulkan/PipelineState.cs | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'src/Ryujinx.Graphics.Vulkan/PipelineState.cs')

diff --git a/src/Ryujinx.Graphics.Vulkan/PipelineState.cs b/src/Ryujinx.Graphics.Vulkan/PipelineState.cs
index a3d8dd6f..aff3f13f 100644
--- a/src/Ryujinx.Graphics.Vulkan/PipelineState.cs
+++ b/src/Ryujinx.Graphics.Vulkan/PipelineState.cs
@@ -304,6 +304,12 @@ namespace Ryujinx.Graphics.Vulkan
             set => Internal.Id9 = (Internal.Id9 & 0xFFFFFFFFFFFFFFCF) | ((ulong)value << 4);
         }
 
+        public bool DepthMode
+        {
+            get => ((Internal.Id9 >> 6) & 0x1) != 0UL;
+            set => Internal.Id9 = (Internal.Id9 & 0xFFFFFFFFFFFFFFBF) | ((value ? 1UL : 0UL) << 6);
+        }
+
         public NativeArray<PipelineShaderStageCreateInfo> Stages;
         public NativeArray<PipelineShaderStageRequiredSubgroupSizeCreateInfoEXT> StageRequiredSubgroupSizes;
         public PipelineLayout PipelineLayout;
@@ -331,6 +337,7 @@ namespace Ryujinx.Graphics.Vulkan
 
             LineWidth = 1f;
             SamplesCount = 1;
+            DepthMode = true;
         }
 
         public unsafe Auto<DisposablePipeline> CreateComputePipeline(
@@ -482,6 +489,17 @@ namespace Ryujinx.Graphics.Vulkan
                     PScissors = pScissors
                 };
 
+                if (gd.Capabilities.SupportsDepthClipControl)
+                {
+                    var viewportDepthClipControlState = new PipelineViewportDepthClipControlCreateInfoEXT()
+                    {
+                        SType = StructureType.PipelineViewportDepthClipControlCreateInfoExt,
+                        NegativeOneToOne = DepthMode
+                    };
+
+                    viewportState.PNext = &viewportDepthClipControlState;
+                }
+
                 var multisampleState = new PipelineMultisampleStateCreateInfo
                 {
                     SType = StructureType.PipelineMultisampleStateCreateInfo,
-- 
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