checkpoint(render): preserve pre-overhaul investigation state

tests/AcDream.App.Tests/Rendering/PortalDepthMaskRetailStateTests.cs

@@ -0,0 +1,67 @@
+using System.Numerics;
+using AcDream.App.Rendering;
+using AcDream.App.Rendering.Gpu;
+using AcDream.App.Rendering.Gpu.Vk;
+using AcDream.App.Tests.Rendering.Gpu;
+
+namespace AcDream.App.Tests.Rendering;
+
+public sealed class PortalDepthMaskRetailStateTests
+{
+    [Fact]
+    public void SealAndPunchUseOneRetailAlwaysWritePipelineAndOneDrawEach()
+    {
+        using var device = new RecordingGpuDevice();
+        var frames = new GpuDeviceFrameLifetime(device);
+        var scope = new VulkanWorldPassScope(sampleCount: 1);
+        using var renderer = new PortalDepthMaskRenderer(device, frames, scope);
+
+        RecordingGpuPipeline pipeline = Assert.Single(device.CreatedPipelines);
+        Assert.Equal("portal-depth-write", pipeline.Description.Name);
+        Assert.Equal(
+            new GpuDepthState(Test: true, Write: true, GpuCompareOp.Always),
+            pipeline.Description.Depth);
+        Assert.False(pipeline.Description.StencilTest);
+        Assert.False(pipeline.Description.ColorWrite);
+        Assert.Equal(GpuCullMode.None, pipeline.Description.Cull);
+
+        frames.BeginFrame();
+        renderer.BeginFrame(frameSlot: 0);
+        using (IGpuPassEncoder pass = frames.CurrentFrame!.BeginPass(
+                   GpuPassDescription.BackbufferClear(
+                       "portal-depth-retail-state",
+                       Vector4.Zero,
+                       sampleCount: 1)))
+        using (scope.Publish(pass))
+        {
+            Vector3[] triangle =
+            [
+                new(-1f, -1f, 1f),
+                new(1f, -1f, 1f),
+                new(0f, 1f, 1f),
+            ];
+            renderer.DrawDepthFan(
+                triangle,
+                Matrix4x4.Identity,
+                ReadOnlySpan<Vector4>.Empty,
+                forceFarZ: true);
+            renderer.DrawDepthFan(
+                triangle,
+                Matrix4x4.Identity,
+                ReadOnlySpan<Vector4>.Empty,
+                forceFarZ: false);
+        }
+        frames.EndFrame();
+
+        Assert.Equal(
+            2,
+            device.Calls.OfType<GpuRecordedPipelineBind>()
+                .Count(call => call.PipelineName == "portal-depth-write"));
+        Assert.Equal(2, device.Calls.OfType<GpuRecordedDraw>().Count());
+        Assert.Collection(
+            device.Calls.OfType<GpuRecordedPushConstants>(),
+            punch => Assert.Equal(1, punch.Constants.RenderPass),
+            seal => Assert.Equal(0, seal.Constants.RenderPass));
+        Assert.Empty(device.Calls.OfType<GpuRecordedStencil>());
+    }
+}