[GPU] Align linear color target pitch like linear textures (#1063)

src/SharpEmu.Libs/Gpu/Images/ImageRequestBuilders.ColorTarget.cs

@@ -230,7 +230,9 @@ public static partial class ImageRequestBuilders
         }
         else
         {
-            pitch = width;
+            // A linear color buffer uses the same 256-byte row alignment as a linear texture of the same memory;
+            // an unaligned pitch made the target and a later texture view of it two different cached images.
+            pitch = TileGeometry.TexturePitch(transferFormat, width, GuestTileMode.Linear);
         }
 
         var mipSpans = new TileLevelSpan[TiledSurfaceLayout.MaxLevels];

tests/SharpEmu.Libs.Tests/Gpu/Images/ImageRequestBuildersTests.cs

@@ -240,6 +240,21 @@ public sealed class ImageRequestBuildersTests : IClassFixture<HeadlessVulkanFixt
         Assert.Equal(0u, ImageRequestBuilders.SampleCount(4));
     }
 
+    [Fact]
+    public void ColorTarget_LinearTargetPitchMatchesTheLinearTexturePitch()
+    {
+        var target = ImageRequestBuilders.ColorTarget(RegisterWords.Color(Base, 816, 604), 0xF, 0, false);
+        var texture = ImageRequestBuilders.Texture(RegisterWords.Texture(Base, GuestPixelFormat.Bits8_8_8_8UNorm, 816, 604), Sampled2D);
+
+        Assert.NotNull(target);
+        var description = target.Value.Request.Description;
+        Assert.Equal(new Extent3D(816, 604, 1), description.Extent);
+        Assert.Equal(832u, description.Pitch);
+        Assert.Equal(832UL * 604 * 4, description.Data.Size);
+        Assert.Equal(texture.Request.Description.Pitch, description.Pitch);
+        Assert.Equal(texture.Request.Description.Data.Size, description.Data.Size);
+    }
+
     [Fact]
     public void Texture_LinearTwoDimensionalFromDescriptor()
     {