shader: add compact f16 arithmetic and compare lowering (#840)

Co-authored-by: Foued Attar <attar.foued@gmail.com>
2026-08-30 21:31:57 +08:00 · 2026-08-24 13:59:51 +02:00
parent f8a826ec1b
commit 2b8ef7d8fa
7 changed files with 790 additions and 14 deletions
@@ -0,0 +1,34 @@
+// Copyright (C) 2026 SharpEmu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+using Xunit;
+
+namespace SharpEmu.ShaderCompiler.Metal.Tests;
+
+public sealed class MslFloat16ArithmeticTests
+{
+    [Fact]
+    public void CompactFloat16ArithmeticUsesHalfOperandsAndPreservesRegisterShape()
+    {
+        var fixture = new Gen5ComputeFixture(
+            "compact-f16-arithmetic",
+            [
+                0x64000501,
+                0x66060B04,
+                0x680C1107,
+                0x6A12170A,
+                0x72181D0D,
+                0x741E2310,
+                0xBF810000,
+            ],
+            StoreScalarResourceBase: 0,
+            StoreBackingBytes: 0);
+
+        var shader = Gen5ComputeFixtures.CompileOrThrow(fixture);
+
+        Assert.Contains("as_type<half>", shader.Source, StringComparison.Ordinal);
+        Assert.Contains("fmin(", shader.Source, StringComparison.Ordinal);
+        Assert.Contains("fmax(", shader.Source, StringComparison.Ordinal);
+        Assert.Contains("& 0xFFFF0000u", shader.Source, StringComparison.Ordinal);
+    }
+}