Implement shader HelperThreadNV (#2163)

* Implement shader HelperThreadNV

* Bump shader cache version

* Use gl_HelperInvocation since its supported across all vendors

* Nit

6 files changed, 24 insertions, 15 deletions

diff --git a/Ryujinx.Graphics.Gpu/Shader/ShaderCache.cs b/Ryujinx.Graphics.Gpu/Shader/ShaderCache.cs
index 293fe86b..8e8389a3 100644
--- a/Ryujinx.Graphics.Gpu/Shader/ShaderCache.cs
+++ b/Ryujinx.Graphics.Gpu/Shader/ShaderCache.cs
@@ -35,7 +35,7 @@ namespace Ryujinx.Graphics.Gpu.Shader
         /// <summary>
         /// Version of the codegen (to be changed when codegen or guest format change).
         /// </summary>
-        private const ulong ShaderCodeGenVersion = 2147;
+        private const ulong ShaderCodeGenVersion = 2163;
 
         // Progress reporting helpers
         private volatile int _shaderCount;
diff --git a/Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs b/Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
index dd3c8196..94487da0 100644
--- a/Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
+++ b/Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
@@ -15,7 +15,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
 
         public static void Declare(CodeGenContext context, StructuredProgramInfo info)
         {
-            context.AppendLine("#version 440 core");
+            context.AppendLine("#version 450 core");
             context.AppendLine("#extension GL_ARB_gpu_shader_int64 : enable");
             context.AppendLine("#extension GL_ARB_shader_ballot : enable");
             context.AppendLine("#extension GL_ARB_shader_group_vote : enable");
diff --git a/Ryujinx.Graphics.Shader/CodeGen/Glsl/OperandManager.cs b/Ryujinx.Graphics.Shader/CodeGen/Glsl/OperandManager.cs
index 5c5d4403..61f20082 100644
--- a/Ryujinx.Graphics.Shader/CodeGen/Glsl/OperandManager.cs
+++ b/Ryujinx.Graphics.Shader/CodeGen/Glsl/OperandManager.cs
@@ -52,19 +52,20 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
             { AttributeConsts.FrontFacing,         new BuiltInAttribute("gl_FrontFacing",     VariableType.Bool) },
 
             // Special.
-            { AttributeConsts.FragmentOutputDepth, new BuiltInAttribute("gl_FragDepth",                           VariableType.F32) },
-            { AttributeConsts.ThreadIdX,           new BuiltInAttribute("gl_LocalInvocationID.x",                 VariableType.U32) },
-            { AttributeConsts.ThreadIdY,           new BuiltInAttribute("gl_LocalInvocationID.y",                 VariableType.U32) },
-            { AttributeConsts.ThreadIdZ,           new BuiltInAttribute("gl_LocalInvocationID.z",                 VariableType.U32) },
-            { AttributeConsts.CtaIdX,              new BuiltInAttribute("gl_WorkGroupID.x",                       VariableType.U32) },
-            { AttributeConsts.CtaIdY,              new BuiltInAttribute("gl_WorkGroupID.y",                       VariableType.U32) },
-            { AttributeConsts.CtaIdZ,              new BuiltInAttribute("gl_WorkGroupID.z",                       VariableType.U32) },
-            { AttributeConsts.LaneId,              new BuiltInAttribute("gl_SubGroupInvocationARB",               VariableType.U32) },
-            { AttributeConsts.EqMask,              new BuiltInAttribute("unpackUint2x32(gl_SubGroupEqMaskARB).x", VariableType.U32) },
-            { AttributeConsts.GeMask,              new BuiltInAttribute("unpackUint2x32(gl_SubGroupGeMaskARB).x", VariableType.U32) },
-            { AttributeConsts.GtMask,              new BuiltInAttribute("unpackUint2x32(gl_SubGroupGtMaskARB).x", VariableType.U32) },
-            { AttributeConsts.LeMask,              new BuiltInAttribute("unpackUint2x32(gl_SubGroupLeMaskARB).x", VariableType.U32) },
-            { AttributeConsts.LtMask,              new BuiltInAttribute("unpackUint2x32(gl_SubGroupLtMaskARB).x", VariableType.U32) },
+            { AttributeConsts.FragmentOutputDepth, new BuiltInAttribute("gl_FragDepth",                           VariableType.F32)  },
+            { AttributeConsts.ThreadKill,          new BuiltInAttribute("gl_HelperInvocation",                    VariableType.Bool) },
+            { AttributeConsts.ThreadIdX,           new BuiltInAttribute("gl_LocalInvocationID.x",                 VariableType.U32)  },
+            { AttributeConsts.ThreadIdY,           new BuiltInAttribute("gl_LocalInvocationID.y",                 VariableType.U32)  },
+            { AttributeConsts.ThreadIdZ,           new BuiltInAttribute("gl_LocalInvocationID.z",                 VariableType.U32)  },
+            { AttributeConsts.CtaIdX,              new BuiltInAttribute("gl_WorkGroupID.x",                       VariableType.U32)  },
+            { AttributeConsts.CtaIdY,              new BuiltInAttribute("gl_WorkGroupID.y",                       VariableType.U32)  },
+            { AttributeConsts.CtaIdZ,              new BuiltInAttribute("gl_WorkGroupID.z",                       VariableType.U32)  },
+            { AttributeConsts.LaneId,              new BuiltInAttribute("gl_SubGroupInvocationARB",               VariableType.U32)  },
+            { AttributeConsts.EqMask,              new BuiltInAttribute("unpackUint2x32(gl_SubGroupEqMaskARB).x", VariableType.U32)  },
+            { AttributeConsts.GeMask,              new BuiltInAttribute("unpackUint2x32(gl_SubGroupGeMaskARB).x", VariableType.U32)  },
+            { AttributeConsts.GtMask,              new BuiltInAttribute("unpackUint2x32(gl_SubGroupGtMaskARB).x", VariableType.U32)  },
+            { AttributeConsts.LeMask,              new BuiltInAttribute("unpackUint2x32(gl_SubGroupLeMaskARB).x", VariableType.U32)  },
+            { AttributeConsts.LtMask,              new BuiltInAttribute("unpackUint2x32(gl_SubGroupLtMaskARB).x", VariableType.U32)  },
 
             // Support uniforms.
             { AttributeConsts.FragmentOutputIsBgraBase + 0,  new BuiltInAttribute($"{DefaultNames.IsBgraName}[0]",  VariableType.Bool) },
diff --git a/Ryujinx.Graphics.Shader/Decoders/SystemRegister.cs b/Ryujinx.Graphics.Shader/Decoders/SystemRegister.cs
index 45ef3782..9eaa7a28 100644
--- a/Ryujinx.Graphics.Shader/Decoders/SystemRegister.cs
+++ b/Ryujinx.Graphics.Shader/Decoders/SystemRegister.cs
@@ -4,6 +4,7 @@ namespace Ryujinx.Graphics.Shader.Decoders
     {
         LaneId     = 0,
         YDirection = 0x12,
+        ThreadKill = 0x13,
         ThreadId   = 0x20,
         ThreadIdX  = 0x21,
         ThreadIdY  = 0x22,
diff --git a/Ryujinx.Graphics.Shader/Instructions/InstEmitMove.cs b/Ryujinx.Graphics.Shader/Instructions/InstEmitMove.cs
index 085325ee..98a713fb 100644
--- a/Ryujinx.Graphics.Shader/Instructions/InstEmitMove.cs
+++ b/Ryujinx.Graphics.Shader/Instructions/InstEmitMove.cs
@@ -63,6 +63,11 @@ namespace Ryujinx.Graphics.Shader.Instructions
                 // TODO: Use value from Y direction GPU register.
                 case SystemRegister.YDirection: src = ConstF(1); break;
 
+                case SystemRegister.ThreadKill: src = context.Config.Stage == ShaderStage.Fragment
+                    ? Attribute(AttributeConsts.ThreadKill)
+                    : Const(0);
+                    break;
+
                 case SystemRegister.ThreadId:
                 {
                     Operand tidX = Attribute(AttributeConsts.ThreadIdX);
diff --git a/Ryujinx.Graphics.Shader/Translation/AttributeConsts.cs b/Ryujinx.Graphics.Shader/Translation/AttributeConsts.cs
index b618dbc3..3d0d216e 100644
--- a/Ryujinx.Graphics.Shader/Translation/AttributeConsts.cs
+++ b/Ryujinx.Graphics.Shader/Translation/AttributeConsts.cs
@@ -54,5 +54,7 @@ namespace Ryujinx.Graphics.Shader.Translation
         public const int GtMask = 0x200002c;
         public const int LeMask = 0x2000030;
         public const int LtMask = 0x2000034;
+
+        public const int ThreadKill = 0x2000038;
     }
 }
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