feat(render): implement Campaign AR and terrain fidelity

tests/AcDream.App.Tests/Rendering/Gpu/Vk/VulkanDirectionalMultiviewContractTests.cs

@@ -0,0 +1,27 @@
+using AcDream.App.Rendering.Gpu.Vk;
+
+namespace AcDream.App.Tests.Rendering.Gpu.Vk;
+
+public sealed class VulkanDirectionalMultiviewContractTests
+{
+    [Fact]
+    public void LowMaskCoversBothAttachmentLayersInOneBarrierRange()
+    {
+        VulkanDirectionalMultiviewRange range =
+            VulkanDirectionalMultiviewContract.Resolve(0b11, 2);
+
+        Assert.Equal(0u, range.BaseLayer);
+        Assert.Equal(2u, range.LayerCount);
+    }
+
+    [Theory]
+    [InlineData(0u)]
+    [InlineData(0b01u)]
+    [InlineData(0b10u)]
+    [InlineData(0b111u)]
+    public void PartialOrExtraMaskFailsBeforeRecording(uint viewMask)
+    {
+        Assert.Throws<NotSupportedException>(() =>
+            VulkanDirectionalMultiviewContract.Resolve(viewMask, 2));
+    }
+}