1  using Ryujinx.Graphics.Device;
 2  using Ryujinx.Graphics.Vic.Image;
 3  using Ryujinx.Graphics.Vic.Types;
 4  using System;
 5  using System.Collections.Generic;
 6  
 7  namespace Ryujinx.Graphics.Vic
 8  {
 9      public class VicDevice : IDeviceState
10      {
11          private readonly DeviceMemoryManager _mm;
12          private readonly ResourceManager _rm;
13          private readonly DeviceState<VicRegisters> _state;
14  
15          public VicDevice(DeviceMemoryManager mm)
16          {
17              _mm = mm;
18              _rm = new ResourceManager(mm, new BufferPool<Pixel>(), new BufferPool<byte>());
19              _state = new DeviceState<VicRegisters>(new Dictionary<string, RwCallback>
20              {
21                  { nameof(VicRegisters.Execute), new RwCallback(Execute, null) },
22              });
23          }
24  
25          public int Read(int offset) => _state.Read(offset);
26          public void Write(int offset, int data) => _state.Write(offset, data);
27  
28          private void Execute(int data)
29          {
30              ConfigStruct config = ReadIndirect<ConfigStruct>(_state.State.SetConfigStructOffset);
31  
32              using Surface output = new(
33                  _rm.SurfacePool,
34                  config.OutputSurfaceConfig.OutSurfaceWidth + 1,
35                  config.OutputSurfaceConfig.OutSurfaceHeight + 1);
36  
37              for (int i = 0; i < config.SlotStruct.Length; i++)
38              {
39                  ref SlotStruct slot = ref config.SlotStruct[i];
40  
41                  if (!slot.SlotConfig.SlotEnable)
42                  {
43                      continue;
44                  }
45  
46                  ref var offsets = ref _state.State.SetSurfacexSlotx[i];
47  
48                  using Surface src = SurfaceReader.Read(_rm, ref slot.SlotConfig, ref slot.SlotSurfaceConfig, ref offsets);
49  
50                  int x1 = config.OutputConfig.TargetRectLeft;
51                  int y1 = config.OutputConfig.TargetRectTop;
52                  int x2 = config.OutputConfig.TargetRectRight + 1;
53                  int y2 = config.OutputConfig.TargetRectBottom + 1;
54  
55                  int targetX = Math.Min(x1, x2);
56                  int targetY = Math.Min(y1, y2);
57                  int targetW = Math.Min(output.Width - targetX, Math.Abs(x2 - x1));
58                  int targetH = Math.Min(output.Height - targetY, Math.Abs(y2 - y1));
59  
60                  Rectangle targetRect = new(targetX, targetY, targetW, targetH);
61  
62                  Blender.BlendOne(output, src, ref slot, targetRect);
63              }
64  
65              SurfaceWriter.Write(_rm, output, ref config.OutputSurfaceConfig, ref _state.State.SetOutputSurface);
66          }
67  
68          private T ReadIndirect<T>(uint offset) where T : unmanaged
69          {
70              return _mm.Read<T>((ulong)offset << 8);
71          }
72      }
73  }