Separate zeta from color formats (#1647)

1 files changed, 42 insertions, 0 deletions

diff --git a/Ryujinx.Graphics.Gpu/State/ZetaFormat.cs b/Ryujinx.Graphics.Gpu/State/ZetaFormat.cs
new file mode 100644
index 00000000..01b608b3
--- /dev/null
+++ b/Ryujinx.Graphics.Gpu/State/ZetaFormat.cs
@@ -0,0 +1,42 @@
+using Ryujinx.Graphics.GAL;
+using Ryujinx.Graphics.Gpu.Image;
+
+namespace Ryujinx.Graphics.Gpu.State
+{
+    /// <summary>
+    /// Depth-stencil texture format.
+    /// </summary>
+    enum ZetaFormat
+    {
+        D32Float       = 0xa,
+        D16Unorm       = 0x13,
+        D24UnormS8Uint = 0x14,
+        D24Unorm       = 0x15,
+        S8UintD24Unorm = 0x16,
+        S8Uint         = 0x17,
+        D32FloatS8Uint = 0x19
+    }
+
+    static class ZetaFormatConverter
+    {
+        /// <summary>
+        /// Converts the depth-stencil texture format to a host compatible format.
+        /// </summary>
+        /// <param name="format">Depth-stencil format</param>
+        /// <returns>Host compatible format enum value</returns>
+        public static FormatInfo Convert(this ZetaFormat format)
+        {
+            return format switch
+            {
+                ZetaFormat.D32Float          => new FormatInfo(Format.D32Float,          1, 1, 4,  1),
+                ZetaFormat.D16Unorm          => new FormatInfo(Format.D16Unorm,          1, 1, 2,  1),
+                ZetaFormat.D24UnormS8Uint    => new FormatInfo(Format.D24UnormS8Uint,    1, 1, 4,  2),
+                ZetaFormat.D24Unorm          => new FormatInfo(Format.D24UnormS8Uint,    1, 1, 4,  1),
+                ZetaFormat.S8UintD24Unorm    => new FormatInfo(Format.D24UnormS8Uint,    1, 1, 4,  2),
+                ZetaFormat.S8Uint            => new FormatInfo(Format.S8Uint,            1, 1, 1,  1),
+                ZetaFormat.D32FloatS8Uint    => new FormatInfo(Format.D32FloatS8Uint,    1, 1, 8,  2),
+                _                            => FormatInfo.Default
+            };
+        }
+    }
+}