From 142cededd4db2ff4f83a4833580d343a4f0a8cde Mon Sep 17 00:00:00 2001
From: riperiperi <rhy3756547@hotmail.com>
Date: Tue, 31 Aug 2021 06:51:57 +0100
Subject: Implement Shader Instructions SUATOM and SURED (#2090)

* Initial Implementation

* Further improvements (no support for float/64-bit types)

* Merge atomic and reduce instructions, add missing format switch

* Fix rebase issues.

* Not used.

* Whoops. Fixed.

* Partial implementation of inc/dec, cleanup and TODOs

* Remove testing path

* Address Feedback
---
 .../Translation/ShaderConfig.cs                    | 26 ++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

(limited to 'Ryujinx.Graphics.Shader/Translation/ShaderConfig.cs')

diff --git a/Ryujinx.Graphics.Shader/Translation/ShaderConfig.cs b/Ryujinx.Graphics.Shader/Translation/ShaderConfig.cs
index f454ceea..7d3246db 100644
--- a/Ryujinx.Graphics.Shader/Translation/ShaderConfig.cs
+++ b/Ryujinx.Graphics.Shader/Translation/ShaderConfig.cs
@@ -162,6 +162,28 @@ namespace Ryujinx.Graphics.Shader.Translation
             return format;
         }
 
+        private bool FormatSupportsAtomic(TextureFormat format)
+        {
+            return format == TextureFormat.R32Sint || format == TextureFormat.R32Uint;
+        }
+
+        public TextureFormat GetTextureFormatAtomic(int handle, int cbufSlot = -1)
+        {
+            // Atomic image instructions do not support GL_EXT_shader_image_load_formatted, 
+            // and must have a type specified. Default to R32Sint if not available.
+
+            var format = GpuAccessor.QueryTextureFormat(handle, cbufSlot);
+
+            if (!FormatSupportsAtomic(format))
+            {
+                GpuAccessor.Log($"Unsupported format for texture {handle}: {format}.");
+
+                format = TextureFormat.R32Sint;
+            }
+
+            return format;
+        }
+
         public void SizeAdd(int size)
         {
             Size += size;
@@ -270,8 +292,8 @@ namespace Ryujinx.Graphics.Shader.Translation
             int handle)
         {
             inst &= Instruction.Mask;
-            bool isImage = inst == Instruction.ImageLoad || inst == Instruction.ImageStore;
-            bool isWrite = inst == Instruction.ImageStore;
+            bool isImage = inst == Instruction.ImageLoad || inst == Instruction.ImageStore || inst == Instruction.ImageAtomic;
+            bool isWrite = inst == Instruction.ImageStore || inst == Instruction.ImageAtomic;
             bool accurateType = inst != Instruction.TextureSize && inst != Instruction.Lod;
 
             if (isImage)
-- 
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