LibSoftGPU: Add SIMD.h with SoftGPU specific SIMD functions

Adds functions to expand Vector{2,3,4} to their SIMD equivalent.

Userland/Libraries/LibSoftGPU/SIMD.h

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/SIMDExtras.h>
+#include <LibGfx/Vector2.h>
+#include <LibGfx/Vector3.h>
+#include <LibGfx/Vector4.h>
+
+namespace SoftGPU {
+
+ALWAYS_INLINE static constexpr Vector2<AK::SIMD::f32x4> expand4(Vector2<float> const& v)
+{
+    return Vector2<AK::SIMD::f32x4> {
+        AK::SIMD::expand4(v.x()),
+        AK::SIMD::expand4(v.y()),
+    };
+}
+
+ALWAYS_INLINE static constexpr Vector3<AK::SIMD::f32x4> expand4(Vector3<float> const& v)
+{
+    return Vector3<AK::SIMD::f32x4> {
+        AK::SIMD::expand4(v.x()),
+        AK::SIMD::expand4(v.y()),
+        AK::SIMD::expand4(v.z()),
+    };
+}
+
+ALWAYS_INLINE static constexpr Vector4<AK::SIMD::f32x4> expand4(Vector4<float> const& v)
+{
+    return Vector4<AK::SIMD::f32x4> {
+        AK::SIMD::expand4(v.x()),
+        AK::SIMD::expand4(v.y()),
+        AK::SIMD::expand4(v.z()),
+        AK::SIMD::expand4(v.w()),
+    };
+}
+
+ALWAYS_INLINE static constexpr Vector2<AK::SIMD::i32x4> expand4(Vector2<int> const& v)
+{
+    return Vector2<AK::SIMD::i32x4> {
+        AK::SIMD::expand4(v.x()),
+        AK::SIMD::expand4(v.y()),
+    };
+}
+
+ALWAYS_INLINE static constexpr Vector3<AK::SIMD::i32x4> expand4(Vector3<int> const& v)
+{
+    return Vector3<AK::SIMD::i32x4> {
+        AK::SIMD::expand4(v.x()),
+        AK::SIMD::expand4(v.y()),
+        AK::SIMD::expand4(v.z()),
+    };
+}
+
+ALWAYS_INLINE static constexpr Vector4<AK::SIMD::i32x4> expand4(Vector4<int> const& v)
+{
+    return Vector4<AK::SIMD::i32x4> {
+        AK::SIMD::expand4(v.x()),
+        AK::SIMD::expand4(v.y()),
+        AK::SIMD::expand4(v.z()),
+        AK::SIMD::expand4(v.w()),
+    };
+}
+
+}