feat(render): implement Campaign AR and terrain fidelity

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

@@ -0,0 +1,52 @@
+using AcDream.App.Rendering.Gpu.Vk;
+
+namespace AcDream.App.Tests.Rendering.Gpu.Vk;
+
+public sealed class VulkanDrawBindingStateTests
+{
+    [Fact]
+    public void FirstDrawBinds_IdenticalDrawReuses_ChangedInputsRebind()
+    {
+        var state = new VulkanDrawBindingState();
+
+        Assert.True(state.RequiresBind(pipelineLayout: 10, packGeneration: 3));
+        state.MarkBound(pipelineLayout: 10, packGeneration: 3);
+        Assert.False(state.RequiresBind(pipelineLayout: 10, packGeneration: 3));
+
+        state.MarkDirty();
+        Assert.True(state.RequiresBind(pipelineLayout: 10, packGeneration: 3));
+        state.MarkBound(pipelineLayout: 10, packGeneration: 3);
+        Assert.True(state.RequiresBind(pipelineLayout: 11, packGeneration: 3));
+        Assert.True(state.RequiresBind(pipelineLayout: 10, packGeneration: 4));
+    }
+
+    [Fact]
+    public void PackAndRetailLayoutsCannotReuseEachOthersBinding()
+    {
+        var state = new VulkanDrawBindingState();
+
+        state.MarkBound(pipelineLayout: 20, packGeneration: 7);
+
+        Assert.True(state.RequiresBind(pipelineLayout: 21, packGeneration: 0));
+        state.MarkBound(pipelineLayout: 21, packGeneration: 0);
+        Assert.True(state.RequiresBind(pipelineLayout: 20, packGeneration: 7));
+    }
+
+    [Fact]
+    public void WarmChecksAllocateZero()
+    {
+        var state = new VulkanDrawBindingState();
+        state.MarkBound(pipelineLayout: 30, packGeneration: 8);
+
+        long before = GC.GetAllocatedBytesForCurrentThread();
+        for (int iteration = 0; iteration < 10_000; iteration++)
+        {
+            Assert.False(state.RequiresBind(
+                pipelineLayout: 30,
+                packGeneration: 8));
+        }
+        long allocated = GC.GetAllocatedBytesForCurrentThread() - before;
+
+        Assert.Equal(0, allocated);
+    }
+}