fix(gpu): support Gen5 flat memory and 3D images (#587)

Vector-mesh UI text samples type-10 volume LUTs; treat MIMG DIM=2 as
Dim3D and transport depth through AGC and Vulkan so Z slices no longer
collapse into a single 2D plane.

src/SharpEmu.Libs/Gpu/GuestGpuTypes.cs

@@ -10,7 +10,8 @@ namespace SharpEmu.Libs.Gpu;
 // translation for its API.
 
 /// <summary>A guest texture referenced by a draw or dispatch. Format/NumberType/
-/// TileMode/DstSelect are raw guest descriptor codes.</summary>
+/// TileMode/DstSelect/Type are raw guest descriptor codes. Depth is the
+/// normalized volume depth (one for non-3D resources).</summary>
 internal sealed record GuestDrawTexture(
     ulong Address,
     uint Width,
@@ -32,7 +33,9 @@ internal sealed record GuestDrawTexture(
     // from; -1 when the range is untracked or the pixels were not read here.
     long WriteGeneration = -1,
     bool ArrayedView = false,
-    uint ArrayLayers = 1);
+    uint ArrayLayers = 1,
+    uint Type = 9,
+    uint Depth = 1);
 
 /// <summary>Raw guest sampler descriptor dwords, copied verbatim from guest memory.</summary>
 internal readonly record struct GuestSampler(
@@ -55,7 +58,9 @@ internal readonly record struct TextureContentIdentity(
     uint Pitch,
     GuestSampler Sampler,
     bool Arrayed = false,
-    uint ArrayLayers = 1);
+    uint ArrayLayers = 1,
+    uint Type = 9,
+    uint Depth = 1);
 
 internal sealed record GuestMemoryBuffer(
     ulong BaseAddress,