Reimplement limited bindless textures support

2 files changed, 45 insertions, 1 deletions

diff --git a/Ryujinx.Graphics.Gpu/Image/TextureBindingInfo.cs b/Ryujinx.Graphics.Gpu/Image/TextureBindingInfo.cs
index 19090ab3..042635ee 100644
--- a/Ryujinx.Graphics.Gpu/Image/TextureBindingInfo.cs
+++ b/Ryujinx.Graphics.Gpu/Image/TextureBindingInfo.cs
@@ -8,10 +8,31 @@ namespace Ryujinx.Graphics.Gpu.Image
 
         public int Handle { get; }
 
+        public bool IsBindless { get; }
+
+        public int CbufSlot   { get; }
+        public int CbufOffset { get; }
+
         public TextureBindingInfo(Target target, int handle)
         {
             Target = target;
             Handle = handle;
+
+            IsBindless = false;
+
+            CbufSlot   = 0;
+            CbufOffset = 0;
+        }
+
+        public TextureBindingInfo(Target target, int cbufSlot, int cbufOffset)
+        {
+            Target = target;
+            Handle = 0;
+
+            IsBindless = true;
+
+            CbufSlot   = cbufSlot;
+            CbufOffset = cbufOffset;
         }
     }
 }
\ No newline at end of file
diff --git a/Ryujinx.Graphics.Gpu/Image/TextureBindingsManager.cs b/Ryujinx.Graphics.Gpu/Image/TextureBindingsManager.cs
index ce58e5c5..0c09661f 100644
--- a/Ryujinx.Graphics.Gpu/Image/TextureBindingsManager.cs
+++ b/Ryujinx.Graphics.Gpu/Image/TextureBindingsManager.cs
@@ -2,6 +2,7 @@ using Ryujinx.Graphics.GAL;
 using Ryujinx.Graphics.Gpu.State;
 using Ryujinx.Graphics.Shader;
 using System;
+using System.Runtime.InteropServices;
 
 namespace Ryujinx.Graphics.Gpu.Image
 {
@@ -133,7 +134,29 @@ namespace Ryujinx.Graphics.Gpu.Image
             {
                 TextureBindingInfo binding = _textureBindings[stageIndex][index];
 
-                int packedId = ReadPackedId(stageIndex, binding.Handle);
+                int packedId;
+
+                if (binding.IsBindless)
+                {
+                    ulong address;
+
+                    var bufferManager = _context.Methods.BufferManager;
+
+                    if (_isCompute)
+                    {
+                        address = bufferManager.GetComputeUniformBufferAddress(binding.CbufSlot);
+                    }
+                    else
+                    {
+                        address = bufferManager.GetGraphicsUniformBufferAddress(stageIndex, binding.CbufSlot);
+                    }
+
+                    packedId = MemoryMarshal.Cast<byte, int>(_context.PhysicalMemory.Read(address + (ulong)binding.CbufOffset * 4, 4))[0];
+                }
+                else
+                {
+                    packedId = ReadPackedId(stageIndex, binding.Handle);
+                }
 
                 int textureId = UnpackTextureId(packedId);
                 int samplerId;