Merge commit '7621e2f8dec938cf48181c8b10afc9b01f444e68' into beta

submodules/MetalEngine/Sources/AlignUp.swift

@@ -0,0 +1,8 @@
+import Foundation
+
+func alignUp(_ value: Int, alignment: Int) -> Int {
+    assert(((alignment - 1) & alignment) == 0)
+
+    let alignmentMask = alignment - 1
+    return ((value + alignmentMask) & (~alignmentMask))
+}

submodules/MetalEngine/Sources/MetalEngineShaders.metal

@@ -0,0 +1,11 @@
+#include <metal_stdlib>
+
+using namespace metal;
+
+vertex float4 clearVertex(const device float2* vertexArray [[ buffer(0) ]], unsigned int vid [[ vertex_id ]]) {
+    return float4(vertexArray[vid], 0.0, 1.0);
+}
+
+fragment half4 clearFragment(const device float4 &color [[ buffer(0) ]]) {
+    return half4(color);
+}