Fix wrong face culling once and for all (#1277)

* Viewport swizzle support on NV and clip origin

* Initialize default viewport swizzle state, emulate viewport swizzle on shaders when not supported

* Address PR feedback

4 files changed, 29 insertions, 15 deletions

diff --git a/Ryujinx.Graphics.GAL/Capabilities.cs b/Ryujinx.Graphics.GAL/Capabilities.cs
index a42cbb07..d496de67 100644
--- a/Ryujinx.Graphics.GAL/Capabilities.cs
+++ b/Ryujinx.Graphics.GAL/Capabilities.cs
@@ -5,26 +5,28 @@ namespace Ryujinx.Graphics.GAL
         public bool SupportsAstcCompression          { get; }
         public bool SupportsImageLoadFormatted       { get; }
         public bool SupportsNonConstantTextureOffset { get; }
+        public bool SupportsViewportSwizzle          { get; }
 
-        public int MaximumComputeSharedMemorySize { get; }
-        public int StorageBufferOffsetAlignment   { get; }
-
-        public float MaxSupportedAnisotropy { get; }
+        public int   MaximumComputeSharedMemorySize { get; }
+        public float MaximumSupportedAnisotropy     { get; }
+        public int   StorageBufferOffsetAlignment   { get; }
 
         public Capabilities(
             bool  supportsAstcCompression,
             bool  supportsImageLoadFormatted,
             bool  supportsNonConstantTextureOffset,
+            bool  supportsViewportSwizzle,
             int   maximumComputeSharedMemorySize,
-            int   storageBufferOffsetAlignment,
-            float maxSupportedAnisotropy)
+            float maximumSupportedAnisotropy,
+            int   storageBufferOffsetAlignment)
         {
             SupportsAstcCompression          = supportsAstcCompression;
             SupportsImageLoadFormatted       = supportsImageLoadFormatted;
             SupportsNonConstantTextureOffset = supportsNonConstantTextureOffset;
+            SupportsViewportSwizzle          = supportsViewportSwizzle;
             MaximumComputeSharedMemorySize   = maximumComputeSharedMemorySize;
+            MaximumSupportedAnisotropy       = maximumSupportedAnisotropy;
             StorageBufferOffsetAlignment     = storageBufferOffsetAlignment;
-            MaxSupportedAnisotropy           = maxSupportedAnisotropy;
         }
     }
 }
\ No newline at end of file
diff --git a/Ryujinx.Graphics.GAL/IPipeline.cs b/Ryujinx.Graphics.GAL/IPipeline.cs
index 22e4e9e2..aa59713d 100644
--- a/Ryujinx.Graphics.GAL/IPipeline.cs
+++ b/Ryujinx.Graphics.GAL/IPipeline.cs
@@ -42,6 +42,8 @@ namespace Ryujinx.Graphics.GAL
 
         void SetImage(int index, ShaderStage stage, ITexture texture);
 
+        void SetOrigin(Origin origin);
+
         void SetPointSize(float size);
 
         void SetPrimitiveRestart(bool enable, int index);
diff --git a/Ryujinx.Graphics.GAL/Origin.cs b/Ryujinx.Graphics.GAL/Origin.cs
new file mode 100644
index 00000000..d1b69cfd
--- /dev/null
+++ b/Ryujinx.Graphics.GAL/Origin.cs
@@ -0,0 +1,8 @@
+namespace Ryujinx.Graphics.GAL
+{
+    public enum Origin
+    {
+        UpperLeft,
+        LowerLeft
+    }
+}
diff --git a/Ryujinx.Graphics.GAL/ViewportSwizzle.cs b/Ryujinx.Graphics.GAL/ViewportSwizzle.cs
index 5f04bf87..c24a2246 100644
--- a/Ryujinx.Graphics.GAL/ViewportSwizzle.cs
+++ b/Ryujinx.Graphics.GAL/ViewportSwizzle.cs
@@ -2,13 +2,15 @@ namespace Ryujinx.Graphics.GAL
 {
     public enum ViewportSwizzle
     {
-        PositiveX,
-        NegativeX,
-        PositiveY,
-        NegativeY,
-        PositiveZ,
-        NegativeZ,
-        PositiveW,
-        NegativeW
+        PositiveX = 0,
+        NegativeX = 1,
+        PositiveY = 2,
+        NegativeY = 3,
+        PositiveZ = 4,
+        NegativeZ = 5,
+        PositiveW = 6,
+        NegativeW = 7,
+
+        NegativeFlag = 1
     }
 }