Stop using glTransformFeedbackVaryings and use explicit layout on the shader (#3012)

* Stop using glTransformFeedbackVarying and use explicit layout on the shader

* This is no longer needed

* Shader cache version bump

* Fix gl_PerVertex output for tessellation control shaders

2 files changed, 38 insertions, 0 deletions

diff --git a/Ryujinx.Graphics.Shader/StructuredIr/StructuredProgram.cs b/Ryujinx.Graphics.Shader/StructuredIr/StructuredProgram.cs
index 61cc167a..31c71f20 100644
--- a/Ryujinx.Graphics.Shader/StructuredIr/StructuredProgram.cs
+++ b/Ryujinx.Graphics.Shader/StructuredIr/StructuredProgram.cs
@@ -64,6 +64,24 @@ namespace Ryujinx.Graphics.Shader.StructuredIr
                 context.LeaveFunction();
             }
 
+            if (config.TransformFeedbackEnabled)
+            {
+                for (int tfbIndex = 0; tfbIndex < 4; tfbIndex++)
+                {
+                    var locations = config.GpuAccessor.QueryTransformFeedbackVaryingLocations(tfbIndex);
+                    var stride = config.GpuAccessor.QueryTransformFeedbackStride(tfbIndex);
+
+                    for (int j = 0; j < locations.Length; j++)
+                    {
+                        byte location = locations[j];
+                        if (location < 0x80)
+                        {
+                            context.Info.TransformFeedbackOutputs[location] = new TransformFeedbackOutput(tfbIndex, j * 4, stride);
+                        }
+                    }
+                }
+            }
+
             return context.Info;
         }
 
diff --git a/Ryujinx.Graphics.Shader/StructuredIr/StructuredProgramInfo.cs b/Ryujinx.Graphics.Shader/StructuredIr/StructuredProgramInfo.cs
index aeaa03ec..933f265f 100644
--- a/Ryujinx.Graphics.Shader/StructuredIr/StructuredProgramInfo.cs
+++ b/Ryujinx.Graphics.Shader/StructuredIr/StructuredProgramInfo.cs
@@ -2,15 +2,35 @@ using System.Collections.Generic;
 
 namespace Ryujinx.Graphics.Shader.StructuredIr
 {
+    struct TransformFeedbackOutput
+    {
+        public readonly bool Valid;
+        public readonly int Buffer;
+        public readonly int Offset;
+        public readonly int Stride;
+
+        public TransformFeedbackOutput(int buffer, int offset, int stride)
+        {
+            Valid = true;
+            Buffer = buffer;
+            Offset = offset;
+            Stride = stride;
+        }
+    }
+
     class StructuredProgramInfo
     {
         public List<StructuredFunction> Functions { get; }
 
         public HelperFunctionsMask HelperFunctionsMask { get; set; }
 
+        public TransformFeedbackOutput[] TransformFeedbackOutputs { get; }
+
         public StructuredProgramInfo()
         {
             Functions = new List<StructuredFunction>();
+
+            TransformFeedbackOutputs = new TransformFeedbackOutput[0x80];
         }
     }
 }
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