From 9719b6a1129c017d96532ff026e2bb933c0b2d0b Mon Sep 17 00:00:00 2001
From: riperiperi <rhy3756547@hotmail.com>
Date: Wed, 26 Oct 2022 00:49:23 +0100
Subject: Vulkan: Use dynamic state for blend constants (#3793)

---
 Ryujinx.Graphics.Vulkan/PipelineDynamicState.cs | 33 +++++++++++++++++++++----
 1 file changed, 28 insertions(+), 5 deletions(-)

(limited to 'Ryujinx.Graphics.Vulkan/PipelineDynamicState.cs')

diff --git a/Ryujinx.Graphics.Vulkan/PipelineDynamicState.cs b/Ryujinx.Graphics.Vulkan/PipelineDynamicState.cs
index 4f73b17b..ae29be51 100644
--- a/Ryujinx.Graphics.Vulkan/PipelineDynamicState.cs
+++ b/Ryujinx.Graphics.Vulkan/PipelineDynamicState.cs
@@ -19,21 +19,34 @@ namespace Ryujinx.Graphics.Vulkan
         private uint _frontWriteMask;
         private uint _frontReference;
 
+        private Array4<float> _blendConstants;
+
         public int ViewportsCount;
         public Array16<Viewport> Viewports;
 
         private enum DirtyFlags
         {
             None = 0,
-            DepthBias = 1 << 0,
-            Scissor = 1 << 1,
-            Stencil = 1 << 2,
-            Viewport = 1 << 3,
-            All = DepthBias | Scissor | Stencil | Viewport
+            Blend = 1 << 0,
+            DepthBias = 1 << 1,
+            Scissor = 1 << 2,
+            Stencil = 1 << 3,
+            Viewport = 1 << 4,
+            All = Blend | DepthBias | Scissor | Stencil | Viewport
         }
 
         private DirtyFlags _dirty;
 
+        public void SetBlendConstants(float r, float g, float b, float a)
+        {
+            _blendConstants[0] = r;
+            _blendConstants[1] = g;
+            _blendConstants[2] = b;
+            _blendConstants[3] = a;
+
+            _dirty |= DirtyFlags.Blend;
+        }
+
         public void SetDepthBias(float slopeFactor, float constantFactor, float clamp)
         {
             _depthBiasSlopeFactor = slopeFactor;
@@ -87,6 +100,11 @@ namespace Ryujinx.Graphics.Vulkan
 
         public void ReplayIfDirty(Vk api, CommandBuffer commandBuffer)
         {
+            if (_dirty.HasFlag(DirtyFlags.Blend))
+            {
+                RecordBlend(api, commandBuffer);
+            }
+
             if (_dirty.HasFlag(DirtyFlags.DepthBias))
             {
                 RecordDepthBias(api, commandBuffer);
@@ -110,6 +128,11 @@ namespace Ryujinx.Graphics.Vulkan
             _dirty = DirtyFlags.None;
         }
 
+        private void RecordBlend(Vk api, CommandBuffer commandBuffer)
+        {
+            api.CmdSetBlendConstants(commandBuffer, _blendConstants.AsSpan());
+        }
+
         private void RecordDepthBias(Vk api, CommandBuffer commandBuffer)
         {
             api.CmdSetDepthBias(commandBuffer, _depthBiasConstantFactor, _depthBiasClamp, _depthBiasSlopeFactor);
-- 
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