From 17a1cab5d29787f3b41f40a69b530dae4e3cb25f Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Sun, 4 Dec 2022 15:36:03 -0300
Subject: Allow SNorm buffer texture formats on Vulkan (#3957)

* Allow SNorm buffer texture formats on Vulkan

* Shader cache version bump
---
 Ryujinx.Graphics.Shader/IGpuAccessor.cs         | 9 +++++++++
 Ryujinx.Graphics.Shader/Translation/Rewriter.cs | 3 ++-
 2 files changed, 11 insertions(+), 1 deletion(-)

(limited to 'Ryujinx.Graphics.Shader')

diff --git a/Ryujinx.Graphics.Shader/IGpuAccessor.cs b/Ryujinx.Graphics.Shader/IGpuAccessor.cs
index cc690eed..337bd314 100644
--- a/Ryujinx.Graphics.Shader/IGpuAccessor.cs
+++ b/Ryujinx.Graphics.Shader/IGpuAccessor.cs
@@ -285,6 +285,15 @@ namespace Ryujinx.Graphics.Shader
             return true;
         }
 
+        /// <summary>
+        /// Queries host GPU support for signed normalized buffer texture formats.
+        /// </summary>
+        /// <returns>True if the GPU and driver supports the formats, false otherwise</returns>
+        bool QueryHostSupportsSnormBufferTextureFormat()
+        {
+            return true;
+        }
+
         /// <summary>
         /// Queries host GPU texture shadow LOD support.
         /// </summary>
diff --git a/Ryujinx.Graphics.Shader/Translation/Rewriter.cs b/Ryujinx.Graphics.Shader/Translation/Rewriter.cs
index 640717f9..bdd9b791 100644
--- a/Ryujinx.Graphics.Shader/Translation/Rewriter.cs
+++ b/Ryujinx.Graphics.Shader/Translation/Rewriter.cs
@@ -14,6 +14,7 @@ namespace Ryujinx.Graphics.Shader.Translation
         {
             bool isVertexShader = config.Stage == ShaderStage.Vertex;
             bool hasConstantBufferDrawParameters = config.GpuAccessor.QueryHasConstantBufferDrawParameters();
+            bool supportsSnormBufferTextureFormat = config.GpuAccessor.QueryHostSupportsSnormBufferTextureFormat();
 
             for (int blkIndex = 0; blkIndex < blocks.Length; blkIndex++)
             {
@@ -52,7 +53,7 @@ namespace Ryujinx.Graphics.Shader.Translation
                         {
                             node = RewriteTextureSample(node, config);
 
-                            if (texOp.Type == SamplerType.TextureBuffer)
+                            if (texOp.Type == SamplerType.TextureBuffer && !supportsSnormBufferTextureFormat)
                             {
                                 node = InsertSnormNormalization(node, config);
                             }
-- 
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