From 3dee712164e635fd3a0d2e9d359a7d11a80bf675 Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Mon, 8 Nov 2021 12:57:28 -0300
Subject: [PATCH] Fix bindless/global memory elimination with inverted
 predicates (#2826)

* Fix bindless/global memory elimination with inverted predicates

* Shader cache version bump
---
 Ryujinx.Graphics.Gpu/Shader/ShaderCache.cs            |  2 +-
 .../Translation/Optimizations/Utils.cs                | 11 ++++++-----
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/Ryujinx.Graphics.Gpu/Shader/ShaderCache.cs b/Ryujinx.Graphics.Gpu/Shader/ShaderCache.cs
index 67a397b3..4e1e130c 100644
--- a/Ryujinx.Graphics.Gpu/Shader/ShaderCache.cs
+++ b/Ryujinx.Graphics.Gpu/Shader/ShaderCache.cs
@@ -40,7 +40,7 @@ namespace Ryujinx.Graphics.Gpu.Shader
         /// <summary>
         /// Version of the codegen (to be changed when codegen or guest format change).
         /// </summary>
-        private const ulong ShaderCodeGenVersion = 2822;
+        private const ulong ShaderCodeGenVersion = 2826;
 
         // Progress reporting helpers
         private volatile int _shaderCount;
diff --git a/Ryujinx.Graphics.Shader/Translation/Optimizations/Utils.cs b/Ryujinx.Graphics.Shader/Translation/Optimizations/Utils.cs
index 83ff8c40..4ca6d687 100644
--- a/Ryujinx.Graphics.Shader/Translation/Optimizations/Utils.cs
+++ b/Ryujinx.Graphics.Shader/Translation/Optimizations/Utils.cs
@@ -10,11 +10,7 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
             {
                 if (sourceBlock.Operations.Count > 0)
                 {
-                    Operation lastOp = sourceBlock.Operations.Last.Value as Operation;
-
-                    if (lastOp != null &&
-                        ((sourceBlock.Next == block && lastOp.Inst == Instruction.BranchIfFalse) ||
-                        (sourceBlock.Branch == block && lastOp.Inst == Instruction.BranchIfTrue)))
+                    if (sourceBlock.GetLastOp() is Operation lastOp && IsConditionalBranch(lastOp.Inst) && sourceBlock.Next == block)
                     {
                         return lastOp;
                     }
@@ -24,6 +20,11 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
             return null;
         }
 
+        private static bool IsConditionalBranch(Instruction inst)
+        {
+            return inst == Instruction.BranchIfFalse || inst == Instruction.BranchIfTrue;
+        }
+
         private static bool BlockConditionsMatch(BasicBlock currentBlock, BasicBlock queryBlock)
         {
             // Check if all the conditions for the query block are satisfied by the current block.