Geometry shader emulation for macOS (#5551)

* Implement vertex and geometry shader conversion to compute

* Call InitializeReservedCounts for compute too

* PR feedback

* Set clip distance mask for geometry and tessellation shaders too

* Transform feedback emulation only for vertex

1 files changed, 30 insertions, 1 deletions

diff --git a/src/Ryujinx.Graphics.Gpu/Engine/Threed/StateUpdater.cs b/src/Ryujinx.Graphics.Gpu/Engine/Threed/StateUpdater.cs
index 1f919d9b..48a497b5 100644
--- a/src/Ryujinx.Graphics.Gpu/Engine/Threed/StateUpdater.cs
+++ b/src/Ryujinx.Graphics.Gpu/Engine/Threed/StateUpdater.cs
@@ -20,6 +20,7 @@ namespace Ryujinx.Graphics.Gpu.Engine.Threed
         public const int RasterizerStateIndex = 15;
         public const int ScissorStateIndex = 16;
         public const int VertexBufferStateIndex = 0;
+        public const int IndexBufferStateIndex = 23;
         public const int PrimitiveRestartStateIndex = 12;
         public const int RenderTargetStateIndex = 27;
 
@@ -290,7 +291,13 @@ namespace Ryujinx.Graphics.Gpu.Engine.Threed
             // of the shader for the new state.
             if (_shaderSpecState != null && _currentSpecState.HasChanged())
             {
-                if (!_shaderSpecState.MatchesGraphics(_channel, ref _currentSpecState.GetPoolState(), ref _currentSpecState.GetGraphicsState(), _vsUsesDrawParameters, false))
+                if (!_shaderSpecState.MatchesGraphics(
+                    _channel,
+                    ref _currentSpecState.GetPoolState(),
+                    ref _currentSpecState.GetGraphicsState(),
+                    _drawState.VertexAsCompute != null,
+                    _vsUsesDrawParameters,
+                    checkTextures: false))
                 {
                     // Shader must be reloaded. _vtgWritesRtLayer should not change.
                     UpdateShaderState();
@@ -1453,6 +1460,19 @@ namespace Ryujinx.Graphics.Gpu.Engine.Threed
                 _fsReadsFragCoord = false;
             }
 
+            if (gs.VertexAsCompute != null)
+            {
+                _drawState.VertexAsCompute = gs.VertexAsCompute;
+                _drawState.GeometryAsCompute = gs.GeometryAsCompute;
+                _drawState.VertexPassthrough = gs.HostProgram;
+            }
+            else
+            {
+                _drawState.VertexAsCompute = null;
+                _drawState.GeometryAsCompute = null;
+                _drawState.VertexPassthrough = null;
+            }
+
             _context.Renderer.Pipeline.SetProgram(gs.HostProgram);
         }
 
@@ -1540,5 +1560,14 @@ namespace Ryujinx.Graphics.Gpu.Engine.Threed
         {
             _updateTracker.ForceDirty(ShaderStateIndex);
         }
+
+        /// <summary>
+        /// Forces a register group as dirty, by index.
+        /// </summary>
+        /// <param name="groupIndex">Index of the group to be dirtied</param>
+        public void ForceDirty(int groupIndex)
+        {
+            _updateTracker.ForceDirty(groupIndex);
+        }
     }
 }