Reword the description of the 6GB expand DRAM hack to be less tantalizing (#3870)

* Reword the hack to something less tantalizing

* Address feedback

Ryujinx.Ava/Assets/Locales/en_US.json

@@ -119,7 +119,7 @@
   "SettingsTabSystemAudioBackendSDL2": "SDL2",
   "SettingsTabSystemHacks": "Hacks",
   "SettingsTabSystemHacksNote": " (may cause instability)",
-  "SettingsTabSystemExpandDramSize": "Expand DRAM Size to 6GiB",
+  "SettingsTabSystemExpandDramSize": "Use alternative memory layout (Developers)",
   "SettingsTabSystemIgnoreMissingServices": "Ignore Missing Services",
   "SettingsTabGraphics": "Graphics",
   "SettingsTabGraphicsAPI": "Graphics API",
@@ -440,7 +440,7 @@
   "MemoryManagerSoftwareTooltip": "Use a software page table for address translation. Highest accuracy but slowest performance.",
   "MemoryManagerHostTooltip": "Directly map memory in the host address space. Much faster JIT compilation and execution.",
   "MemoryManagerUnsafeTooltip": "Directly map memory, but do not mask the address within the guest address space before access. Faster, but at the cost of safety. The guest application can access memory from anywhere in Ryujinx, so only run programs you trust with this mode.",
-  "DRamTooltip": "Increases the amount of memory on the emulated system from 4GiB to 6GiB.\n\nThis is only useful for higher-resolution texture packs or 4k resolution mods. Does NOT improve performance.\n\nLeave OFF if unsure.",
+  "DRamTooltip": "Utilizes an alternative MemoryMode layout to mimic a Switch development model.\n\nThis is only useful for higher-resolution texture packs or 4k resolution mods. Does NOT improve performance.\n\nLeave OFF if unsure.",
   "IgnoreMissingServicesTooltip": "Ignores unimplemented Horizon OS services. This may help in bypassing crashes when booting certain games.\n\nLeave OFF if unsure.",
   "GraphicsBackendThreadingTooltip": "Executes graphics backend commands on a second thread.\n\nSpeeds up shader compilation, reduces stuttering, and improves performance on GPU drivers without multithreading support of their own. Slightly better performance on drivers with multithreading.\n\nSet to AUTO if unsure.",
   "GalThreadingTooltip": "Executes graphics backend commands on a second thread.\n\nSpeeds up shader compilation, reduces stuttering, and improves performance on GPU drivers without multithreading support of their own. Slightly better performance on drivers with multithreading.\n\nSet to AUTO if unsure.",

Ryujinx.Graphics.GAL/Capabilities.cs

@@ -21,6 +21,7 @@ namespace Ryujinx.Graphics.GAL
         public readonly bool SupportsFragmentShaderOrderingIntel;
         public readonly bool SupportsGeometryShaderPassthrough;
         public readonly bool SupportsImageLoadFormatted;
+        public readonly bool SupportsLayerVertexTessellation;
         public readonly bool SupportsMismatchingViewFormat;
         public readonly bool SupportsCubemapView;
         public readonly bool SupportsNonConstantTextureOffset;
@@ -55,6 +56,7 @@ namespace Ryujinx.Graphics.GAL
             bool supportsFragmentShaderOrderingIntel,
             bool supportsGeometryShaderPassthrough,
             bool supportsImageLoadFormatted,
+            bool supportsLayerVertexTessellation,
             bool supportsMismatchingViewFormat,
             bool supportsCubemapView,
             bool supportsNonConstantTextureOffset,
@@ -86,6 +88,7 @@ namespace Ryujinx.Graphics.GAL
             SupportsFragmentShaderOrderingIntel = supportsFragmentShaderOrderingIntel;
             SupportsGeometryShaderPassthrough = supportsGeometryShaderPassthrough;
             SupportsImageLoadFormatted = supportsImageLoadFormatted;
+            SupportsLayerVertexTessellation = supportsLayerVertexTessellation;
             SupportsMismatchingViewFormat = supportsMismatchingViewFormat;
             SupportsCubemapView = supportsCubemapView;
             SupportsNonConstantTextureOffset = supportsNonConstantTextureOffset;

Ryujinx.Graphics.Gpu/GpuChannel.cs

@@ -67,6 +67,7 @@ namespace Ryujinx.Graphics.Gpu
 
             // Since the memory manager changed, make sure we will get pools from addresses of the new memory manager.
             TextureManager.ReloadPools();
+            MemoryManager.Physical.BufferCache.QueuePrune();
         }
 
         /// <summary>
@@ -77,6 +78,7 @@ namespace Ryujinx.Graphics.Gpu
         private void MemoryUnmappedHandler(object sender, UnmapEventArgs e)
         {
             TextureManager.ReloadPools();
+            MemoryManager.Physical.BufferCache.QueuePrune();
         }
 
         /// <summary>
@@ -131,6 +133,7 @@ namespace Ryujinx.Graphics.Gpu
             {
                 oldMemoryManager.Physical.BufferCache.NotifyBuffersModified -= BufferManager.Rebind;
                 oldMemoryManager.Physical.DecrementReferenceCount();
+                oldMemoryManager.MemoryUnmapped -= MemoryUnmappedHandler;
             }
         }
     }

Ryujinx.Graphics.Gpu/Memory/BufferCache.cs

@@ -28,6 +28,7 @@ namespace Ryujinx.Graphics.Gpu.Memory
 
         private readonly Dictionary<ulong, BufferCacheEntry> _dirtyCache;
         private readonly Dictionary<ulong, BufferCacheEntry> _modifiedCache;
+        private bool _pruneCaches;
 
         public event Action NotifyBuffersModified;
 
@@ -136,6 +137,11 @@ namespace Ryujinx.Graphics.Gpu.Memory
         /// <param name="size">Size in bytes of the buffer</param>
         public void ForceDirty(MemoryManager memoryManager, ulong gpuVa, ulong size)
         {
+            if (_pruneCaches)
+            {
+                Prune();
+            }
+
             if (!_dirtyCache.TryGetValue(gpuVa, out BufferCacheEntry result) ||
                 result.EndGpuAddress < gpuVa + size ||
                 result.UnmappedSequence != result.Buffer.UnmappedSequence)
@@ -158,17 +164,29 @@ namespace Ryujinx.Graphics.Gpu.Memory
         /// <returns>True if modified, false otherwise</returns>
         public bool CheckModified(MemoryManager memoryManager, ulong gpuVa, ulong size, out ulong outAddr)
         {
-            if (!_modifiedCache.TryGetValue(gpuVa, out BufferCacheEntry result) ||
-                result.EndGpuAddress < gpuVa + size ||
-                result.UnmappedSequence != result.Buffer.UnmappedSequence)
+            if (_pruneCaches)
             {
-                ulong address = TranslateAndCreateBuffer(memoryManager, gpuVa, size);
-                result = new BufferCacheEntry(address, gpuVa, GetBuffer(address, size));
-
-                _modifiedCache[gpuVa] = result;
+                Prune();
             }
 
-            outAddr = result.Address;
+            // Align the address to avoid creating too many entries on the quick lookup dictionary.
+            ulong mask = BufferAlignmentMask;
+            ulong alignedGpuVa = gpuVa & (~mask);
+            ulong alignedEndGpuVa = (gpuVa + size + mask) & (~mask);
+
+            size = alignedEndGpuVa - alignedGpuVa;
+
+            if (!_modifiedCache.TryGetValue(alignedGpuVa, out BufferCacheEntry result) ||
+                result.EndGpuAddress < alignedEndGpuVa ||
+                result.UnmappedSequence != result.Buffer.UnmappedSequence)
+            {
+                ulong address = TranslateAndCreateBuffer(memoryManager, alignedGpuVa, size);
+                result = new BufferCacheEntry(address, alignedGpuVa, GetBuffer(address, size));
+
+                _modifiedCache[alignedGpuVa] = result;
+            }
+
+            outAddr = result.Address | (gpuVa & mask);
 
             return result.Buffer.IsModified(result.Address, size);
         }
@@ -435,6 +453,54 @@ namespace Ryujinx.Graphics.Gpu.Memory
             }
         }
 
+        /// <summary>
+        /// Prune any invalid entries from a quick access dictionary.
+        /// </summary>
+        /// <param name="dictionary">Dictionary to prune</param>
+        /// <param name="toDelete">List used to track entries to delete</param>
+        private void Prune(Dictionary<ulong, BufferCacheEntry> dictionary, ref List<ulong> toDelete)
+        {
+            foreach (var entry in dictionary)
+            {
+                if (entry.Value.UnmappedSequence != entry.Value.Buffer.UnmappedSequence)
+                {
+                    (toDelete ??= new()).Add(entry.Key);
+                }
+            }
+
+            if (toDelete != null)
+            {
+                foreach (ulong entry in toDelete)
+                {
+                    dictionary.Remove(entry);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Prune any invalid entries from the quick access dictionaries.
+        /// </summary>
+        private void Prune()
+        {
+            List<ulong> toDelete = null;
+
+            Prune(_dirtyCache, ref toDelete);
+
+            toDelete?.Clear();
+
+            Prune(_modifiedCache, ref toDelete);
+
+            _pruneCaches = false;
+        }
+
+        /// <summary>
+        /// Queues a prune of invalid entries the next time a dictionary cache is accessed.
+        /// </summary>
+        public void QueuePrune()
+        {
+            _pruneCaches = true;
+        }
+
         /// <summary>
         /// Disposes all buffers in the cache.
         /// It's an error to use the buffer manager after disposal.

Ryujinx.Graphics.Gpu/Memory/BufferModifiedRangeList.cs

@@ -325,13 +325,15 @@ namespace Ryujinx.Graphics.Gpu.Memory
         public void ReregisterRanges(Action<ulong, ulong> rangeAction)
         {
             ref var ranges = ref ThreadStaticArray<BufferModifiedRange>.Get();
+            int count;
 
             // Range list must be consistent for this operation.
             lock (_lock)
             {
-                if (ranges.Length < Count)
+                count = Count;
+                if (ranges.Length < count)
                 {
-                    Array.Resize(ref ranges, Count);
+                    Array.Resize(ref ranges, count);
                 }
 
                 int i = 0;
@@ -342,7 +344,7 @@ namespace Ryujinx.Graphics.Gpu.Memory
             }
 
             ulong currentSync = _context.SyncNumber;
-            for (int i = 0; i < Count; i++)
+            for (int i = 0; i < count; i++)
             {
                 BufferModifiedRange range = ranges[i];
                 if (range.SyncNumber != currentSync)

Ryujinx.Graphics.Gpu/Shader/DiskCache/DiskCacheHostStorage.cs

@@ -22,7 +22,7 @@ namespace Ryujinx.Graphics.Gpu.Shader.DiskCache
         private const ushort FileFormatVersionMajor = 1;
         private const ushort FileFormatVersionMinor = 2;
         private const uint FileFormatVersionPacked = ((uint)FileFormatVersionMajor << 16) | FileFormatVersionMinor;
-        private const uint CodeGenVersion = 3863;
+        private const uint CodeGenVersion = 3868;
 
         private const string SharedTocFileName = "shared.toc";
         private const string SharedDataFileName = "shared.data";
@@ -379,7 +379,7 @@ namespace Ryujinx.Graphics.Gpu.Shader.DiskCache
 
                             if (context.Capabilities.Api == TargetApi.Vulkan)
                             {
-                                ShaderSource[] shaderSources = ShaderBinarySerializer.Unpack(shaders, hostCode, isCompute);
+                                ShaderSource[] shaderSources = ShaderBinarySerializer.Unpack(shaders, hostCode);
 
                                 hostProgram = context.Renderer.CreateProgram(shaderSources, shaderInfo);
                             }

Ryujinx.Graphics.Gpu/Shader/DiskCache/ParallelDiskCacheLoader.cs

@@ -636,6 +636,8 @@ namespace Ryujinx.Graphics.Gpu.Shader.DiskCache
             CachedShaderStage[] shaders = new CachedShaderStage[guestShaders.Length];
             List<ShaderProgram> translatedStages = new List<ShaderProgram>();
 
+            TranslatorContext previousStage = null;
+
             for (int stageIndex = 0; stageIndex < Constants.ShaderStages; stageIndex++)
             {
                 TranslatorContext currentStage = translatorContexts[stageIndex + 1];
@@ -668,6 +670,16 @@ namespace Ryujinx.Graphics.Gpu.Shader.DiskCache
                     {
                         translatedStages.Add(program);
                     }
+
+                    previousStage = currentStage;
+                }
+                else if (
+                    previousStage != null &&
+                    previousStage.LayerOutputWritten &&
+                    stageIndex == 3 &&
+                    !_context.Capabilities.SupportsLayerVertexTessellation)
+                {
+                    translatedStages.Add(previousStage.GenerateGeometryPassthrough());
                 }
             }
 

Ryujinx.Graphics.Gpu/Shader/DiskCache/ShaderBinarySerializer.cs

@@ -1,5 +1,7 @@
 using Ryujinx.Graphics.GAL;
+using Ryujinx.Graphics.Shader;
 using Ryujinx.Graphics.Shader.Translation;
+using System;
 using System.Collections.Generic;
 using System.IO;
 
@@ -12,8 +14,11 @@ namespace Ryujinx.Graphics.Gpu.Shader.DiskCache
             using MemoryStream output = new MemoryStream();
             using BinaryWriter writer = new BinaryWriter(output);
 
+            writer.Write(sources.Length);
+
             for (int i = 0; i < sources.Length; i++)
             {
+                writer.Write((int)sources[i].Stage);
                 writer.Write(sources[i].BinaryCode.Length);
                 writer.Write(sources[i].BinaryCode);
             }
@@ -21,29 +26,40 @@ namespace Ryujinx.Graphics.Gpu.Shader.DiskCache
             return output.ToArray();
         }
 
-        public static ShaderSource[] Unpack(CachedShaderStage[] stages, byte[] code, bool compute)
+        public static ShaderSource[] Unpack(CachedShaderStage[] stages, byte[] code)
         {
             using MemoryStream input = new MemoryStream(code);
             using BinaryReader reader = new BinaryReader(input);
 
             List<ShaderSource> output = new List<ShaderSource>();
 
-            for (int i = compute ? 0 : 1; i < stages.Length; i++)
+            int count = reader.ReadInt32();
+
+            for (int i = 0; i < count; i++)
             {
-                CachedShaderStage stage = stages[i];
-
-                if (stage == null)
-                {
-                    continue;
-                }
-
+                ShaderStage stage = (ShaderStage)reader.ReadInt32();
                 int binaryCodeLength = reader.ReadInt32();
                 byte[] binaryCode = reader.ReadBytes(binaryCodeLength);
 
-                output.Add(new ShaderSource(binaryCode, ShaderCache.GetBindings(stage.Info), stage.Info.Stage, TargetLanguage.Spirv));
+                output.Add(new ShaderSource(binaryCode, GetBindings(stages, stage), stage, TargetLanguage.Spirv));
             }
 
             return output.ToArray();
         }
+
+        private static ShaderBindings GetBindings(CachedShaderStage[] stages, ShaderStage stage)
+        {
+            for (int i = 0; i < stages.Length; i++)
+            {
+                CachedShaderStage currentStage = stages[i];
+
+                if (currentStage != null && currentStage.Info.Stage == stage && currentStage.Info != null)
+                {
+                    return ShaderCache.GetBindings(currentStage.Info);
+                }
+            }
+
+            return new ShaderBindings(Array.Empty<int>(), Array.Empty<int>(), Array.Empty<int>(), Array.Empty<int>());
+        }
     }
 }

Ryujinx.Graphics.Gpu/Shader/GpuAccessorBase.cs

@@ -128,6 +128,8 @@ namespace Ryujinx.Graphics.Gpu.Shader
 
         public bool QueryHostSupportsImageLoadFormatted() => _context.Capabilities.SupportsImageLoadFormatted;
 
+        public bool QueryHostSupportsLayerVertexTessellation() => _context.Capabilities.SupportsLayerVertexTessellation;
+
         public bool QueryHostSupportsNonConstantTextureOffset() => _context.Capabilities.SupportsNonConstantTextureOffset;
 
         public bool QueryHostSupportsShaderBallot() => _context.Capabilities.SupportsShaderBallot;

Ryujinx.Graphics.Gpu/Shader/ShaderCache.cs

@@ -356,6 +356,8 @@ namespace Ryujinx.Graphics.Gpu.Shader
             CachedShaderStage[] shaders = new CachedShaderStage[Constants.ShaderStages + 1];
             List<ShaderSource> shaderSources = new List<ShaderSource>();
 
+            TranslatorContext previousStage = null;
+
             for (int stageIndex = 0; stageIndex < Constants.ShaderStages; stageIndex++)
             {
                 TranslatorContext currentStage = translatorContexts[stageIndex + 1];
@@ -392,6 +394,16 @@ namespace Ryujinx.Graphics.Gpu.Shader
                     {
                         shaderSources.Add(CreateShaderSource(program));
                     }
+
+                    previousStage = currentStage;
+                }
+                else if (
+                    previousStage != null &&
+                    previousStage.LayerOutputWritten &&
+                    stageIndex == 3 &&
+                    !_context.Capabilities.SupportsLayerVertexTessellation)
+                {
+                    shaderSources.Add(CreateShaderSource(previousStage.GenerateGeometryPassthrough()));
                 }
             }
 

Ryujinx.Graphics.OpenGL/HwCapabilities.cs

@@ -18,6 +18,7 @@ namespace Ryujinx.Graphics.OpenGL
         private static readonly Lazy<bool> _supportsQuads                        = new Lazy<bool>(SupportsQuadsCheck);
         private static readonly Lazy<bool> _supportsSeamlessCubemapPerTexture    = new Lazy<bool>(() => HasExtension("GL_ARB_seamless_cubemap_per_texture"));
         private static readonly Lazy<bool> _supportsShaderBallot                 = new Lazy<bool>(() => HasExtension("GL_ARB_shader_ballot"));
+        private static readonly Lazy<bool> _supportsShaderViewportLayerArray     = new Lazy<bool>(() => HasExtension("GL_ARB_shader_viewport_layer_array"));
         private static readonly Lazy<bool> _supportsTextureCompressionBptc       = new Lazy<bool>(() => HasExtension("GL_EXT_texture_compression_bptc"));
         private static readonly Lazy<bool> _supportsTextureCompressionRgtc       = new Lazy<bool>(() => HasExtension("GL_EXT_texture_compression_rgtc"));
         private static readonly Lazy<bool> _supportsTextureCompressionS3tc       = new Lazy<bool>(() => HasExtension("GL_EXT_texture_compression_s3tc"));
@@ -61,6 +62,7 @@ namespace Ryujinx.Graphics.OpenGL
         public static bool SupportsQuads                        => _supportsQuads.Value;
         public static bool SupportsSeamlessCubemapPerTexture    => _supportsSeamlessCubemapPerTexture.Value;
         public static bool SupportsShaderBallot                 => _supportsShaderBallot.Value;
+        public static bool SupportsShaderViewportLayerArray     => _supportsShaderViewportLayerArray.Value;
         public static bool SupportsTextureCompressionBptc       => _supportsTextureCompressionBptc.Value;
         public static bool SupportsTextureCompressionRgtc       => _supportsTextureCompressionRgtc.Value;
         public static bool SupportsTextureCompressionS3tc       => _supportsTextureCompressionS3tc.Value;

Ryujinx.Graphics.OpenGL/OpenGLRenderer.cs

@@ -117,12 +117,13 @@ namespace Ryujinx.Graphics.OpenGL
                 supportsFragmentShaderOrderingIntel: HwCapabilities.SupportsFragmentShaderOrdering,
                 supportsGeometryShaderPassthrough: HwCapabilities.SupportsGeometryShaderPassthrough,
                 supportsImageLoadFormatted: HwCapabilities.SupportsImageLoadFormatted,
+                supportsLayerVertexTessellation: HwCapabilities.SupportsShaderViewportLayerArray,
                 supportsMismatchingViewFormat: HwCapabilities.SupportsMismatchingViewFormat,
                 supportsCubemapView: true,
                 supportsNonConstantTextureOffset: HwCapabilities.SupportsNonConstantTextureOffset,
                 supportsShaderBallot: HwCapabilities.SupportsShaderBallot,
                 supportsTextureShadowLod: HwCapabilities.SupportsTextureShadowLod,
-                supportsViewportIndex: true,
+                supportsViewportIndex: HwCapabilities.SupportsShaderViewportLayerArray,
                 supportsViewportSwizzle: HwCapabilities.SupportsViewportSwizzle,
                 supportsIndirectParameters: HwCapabilities.SupportsIndirectParameters,
                 maximumUniformBuffersPerStage: 13, // TODO: Avoid hardcoding those limits here and get from driver?

Ryujinx.Graphics.Shader/IGpuAccessor.cs

@@ -258,6 +258,15 @@ namespace Ryujinx.Graphics.Shader
             return true;
         }
 
+        /// <summary>
+        /// Queries host support for writes to Layer from vertex or tessellation shader stages.
+        /// </summary>
+        /// <returns>True if writes to layer from vertex or tessellation are supported, false otherwise</returns>
+        bool QueryHostSupportsLayerVertexTessellation()
+        {
+            return true;
+        }
+
         /// <summary>
         /// Queries host GPU non-constant texture offset support.
         /// </summary>

Ryujinx.Graphics.Shader/Instructions/InstEmitAttribute.cs

@@ -278,13 +278,21 @@ namespace Ryujinx.Graphics.Shader.Instructions
 
         private static int FixedFuncToUserAttribute(ShaderConfig config, int attr, bool isOutput)
         {
-            if (attr >= AttributeConsts.FrontColorDiffuseR && attr < AttributeConsts.ClipDistance0)
+            bool supportsLayerFromVertexOrTess = config.GpuAccessor.QueryHostSupportsLayerVertexTessellation();
+            int fixedStartAttr = supportsLayerFromVertexOrTess ? 0 : 1;
+
+            if (attr == AttributeConsts.Layer && config.Stage != ShaderStage.Geometry && !supportsLayerFromVertexOrTess)
             {
-                attr = FixedFuncToUserAttribute(config, attr, AttributeConsts.FrontColorDiffuseR, 0, isOutput);
+                attr = FixedFuncToUserAttribute(config, attr, AttributeConsts.Layer, 0, isOutput);
+                config.SetLayerOutputAttribute(attr);
+            }
+            else if (attr >= AttributeConsts.FrontColorDiffuseR && attr < AttributeConsts.ClipDistance0)
+            {
+                attr = FixedFuncToUserAttribute(config, attr, AttributeConsts.FrontColorDiffuseR, fixedStartAttr, isOutput);
             }
             else if (attr >= AttributeConsts.TexCoordBase && attr < AttributeConsts.TexCoordEnd)
             {
-                attr = FixedFuncToUserAttribute(config, attr, AttributeConsts.TexCoordBase, 4, isOutput);
+                attr = FixedFuncToUserAttribute(config, attr, AttributeConsts.TexCoordBase, fixedStartAttr + 4, isOutput);
             }
 
             return attr;

Ryujinx.Graphics.Shader/Translation/ShaderConfig.cs

@@ -48,6 +48,9 @@ namespace Ryujinx.Graphics.Shader.Translation
 
         public int Cb1DataSize { get; private set; }
 
+        public bool LayerOutputWritten { get; private set; }
+        public int LayerOutputAttribute { get; private set; }
+
         public bool NextUsesFixedFuncAttributes { get; private set; }
         public int UsedInputAttributes { get; private set; }
         public int UsedOutputAttributes { get; private set; }
@@ -131,6 +134,20 @@ namespace Ryujinx.Graphics.Shader.Translation
             _usedImages   = new Dictionary<TextureInfo, TextureMeta>();
         }
 
+        public ShaderConfig(
+            ShaderStage stage,
+            OutputTopology outputTopology,
+            int maxOutputVertices,
+            IGpuAccessor gpuAccessor,
+            TranslationOptions options) : this(gpuAccessor, options)
+        {
+            Stage                    = stage;
+            ThreadsPerInputPrimitive = 1;
+            OutputTopology           = outputTopology;
+            MaxOutputVertices        = maxOutputVertices;
+            TransformFeedbackEnabled = gpuAccessor.QueryTransformFeedbackEnabled();
+        }
+
         public ShaderConfig(ShaderHeader header, IGpuAccessor gpuAccessor, TranslationOptions options) : this(gpuAccessor, options)
         {
             Stage                    = header.Stage;
@@ -240,6 +257,12 @@ namespace Ryujinx.Graphics.Shader.Translation
             }
         }
 
+        public void SetLayerOutputAttribute(int attr)
+        {
+            LayerOutputWritten = true;
+            LayerOutputAttribute = attr;
+        }
+
         public void SetInputUserAttributeFixedFunc(int index)
         {
             UsedInputAttributes |= 1 << index;
@@ -694,5 +717,20 @@ namespace Ryujinx.Graphics.Shader.Translation
         {
             return FindDescriptorIndex(GetImageDescriptors(), texOp);
         }
+
+        public ShaderProgramInfo CreateProgramInfo()
+        {
+            return new ShaderProgramInfo(
+                GetConstantBufferDescriptors(),
+                GetStorageBufferDescriptors(),
+                GetTextureDescriptors(),
+                GetImageDescriptors(),
+                Stage,
+                UsedFeatures.HasFlag(FeatureFlags.InstanceId),
+                UsedFeatures.HasFlag(FeatureFlags.DrawParameters),
+                UsedFeatures.HasFlag(FeatureFlags.RtLayer),
+                ClipDistancesWritten,
+                OmapTargets);
+        }
     }
 }

Ryujinx.Graphics.Shader/Translation/Translator.cs

@@ -79,17 +79,7 @@ namespace Ryujinx.Graphics.Shader.Translation
 
             var sInfo = StructuredProgram.MakeStructuredProgram(funcs, config);
 
-            var info = new ShaderProgramInfo(
-                config.GetConstantBufferDescriptors(),
-                config.GetStorageBufferDescriptors(),
-                config.GetTextureDescriptors(),
-                config.GetImageDescriptors(),
-                config.Stage,
-                config.UsedFeatures.HasFlag(FeatureFlags.InstanceId),
-                config.UsedFeatures.HasFlag(FeatureFlags.DrawParameters),
-                config.UsedFeatures.HasFlag(FeatureFlags.RtLayer),
-                config.ClipDistancesWritten,
-                config.OmapTargets);
+            var info = config.CreateProgramInfo();
 
             return config.Options.TargetLanguage switch
             {

Ryujinx.Graphics.Shader/Translation/TranslatorContext.cs

@@ -1,7 +1,12 @@
-using Ryujinx.Graphics.Shader.Decoders;
+using Ryujinx.Graphics.Shader.CodeGen.Glsl;
+using Ryujinx.Graphics.Shader.CodeGen.Spirv;
+using Ryujinx.Graphics.Shader.Decoders;
 using Ryujinx.Graphics.Shader.IntermediateRepresentation;
+using Ryujinx.Graphics.Shader.StructuredIr;
+using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 
 using static Ryujinx.Graphics.Shader.IntermediateRepresentation.OperandHelper;
 using static Ryujinx.Graphics.Shader.Translation.Translator;
@@ -18,6 +23,7 @@ namespace Ryujinx.Graphics.Shader.Translation
         public ShaderStage Stage => _config.Stage;
         public int Size => _config.Size;
         public int Cb1DataSize => _config.Cb1DataSize;
+        public bool LayerOutputWritten => _config.LayerOutputWritten;
 
         public IGpuAccessor GpuAccessor => _config.GpuAccessor;
 
@@ -149,5 +155,94 @@ namespace Ryujinx.Graphics.Shader.Translation
 
             return Translator.Translate(code, _config);
         }
+
+        public ShaderProgram GenerateGeometryPassthrough()
+        {
+            int outputAttributesMask = _config.UsedOutputAttributes;
+            int layerOutputAttr = _config.LayerOutputAttribute;
+
+            OutputTopology outputTopology;
+            int maxOutputVertices;
+
+            switch (GpuAccessor.QueryPrimitiveTopology())
+            {
+                case InputTopology.Points:
+                    outputTopology = OutputTopology.PointList;
+                    maxOutputVertices = 1;
+                    break;
+                case InputTopology.Lines:
+                case InputTopology.LinesAdjacency:
+                    outputTopology = OutputTopology.LineStrip;
+                    maxOutputVertices = 2;
+                    break;
+                default:
+                    outputTopology = OutputTopology.TriangleStrip;
+                    maxOutputVertices = 3;
+                    break;
+            }
+
+            ShaderConfig config = new ShaderConfig(ShaderStage.Geometry, outputTopology, maxOutputVertices, GpuAccessor, _config.Options);
+
+            EmitterContext context = new EmitterContext(default, config, false);
+
+            for (int v = 0; v < maxOutputVertices; v++)
+            {
+                int outAttrsMask = outputAttributesMask;
+
+                while (outAttrsMask != 0)
+                {
+                    int attrIndex = BitOperations.TrailingZeroCount(outAttrsMask);
+
+                    outAttrsMask &= ~(1 << attrIndex);
+
+                    for (int c = 0; c < 4; c++)
+                    {
+                        int attr = AttributeConsts.UserAttributeBase + attrIndex * 16 + c * 4;
+
+                        Operand value = context.LoadAttribute(Const(attr), Const(0), Const(v));
+
+                        if (attr == layerOutputAttr)
+                        {
+                            context.Copy(Attribute(AttributeConsts.Layer), value);
+                        }
+                        else
+                        {
+                            context.Copy(Attribute(attr), value);
+                            config.SetOutputUserAttribute(attrIndex);
+                        }
+
+                        config.SetInputUserAttribute(attrIndex, c);
+                    }
+                }
+
+                for (int c = 0; c < 4; c++)
+                {
+                    int attr = AttributeConsts.PositionX + c * 4;
+
+                    Operand value = context.LoadAttribute(Const(attr), Const(0), Const(v));
+
+                    context.Copy(Attribute(attr), value);
+                }
+
+                context.EmitVertex();
+            }
+
+            context.EndPrimitive();
+
+            var operations = context.GetOperations();
+            var cfg = ControlFlowGraph.Create(operations);
+            var function = new Function(cfg.Blocks, "main", false, 0, 0);
+
+            var sInfo = StructuredProgram.MakeStructuredProgram(new[] { function }, config);
+
+            var info = config.CreateProgramInfo();
+
+            return config.Options.TargetLanguage switch
+            {
+                TargetLanguage.Glsl => new ShaderProgram(info, TargetLanguage.Glsl, GlslGenerator.Generate(sInfo, config)),
+                TargetLanguage.Spirv => new ShaderProgram(info, TargetLanguage.Spirv, SpirvGenerator.Generate(sInfo, config)),
+                _ => throw new NotImplementedException(config.Options.TargetLanguage.ToString())
+            };
+        }
     }
 }

Ryujinx.Graphics.Vulkan/BufferHolder.cs

@@ -210,7 +210,10 @@ namespace Ryujinx.Graphics.Vulkan
                 }
             }
 
-            if (cbs != null && !(_buffer.HasCommandBufferDependency(cbs.Value) && _waitable.IsBufferRangeInUse(cbs.Value.CommandBufferIndex, offset, dataSize)))
+            if (cbs != null &&
+                _gd.PipelineInternal.RenderPassActive &&
+                !(_buffer.HasCommandBufferDependency(cbs.Value) &&
+                _waitable.IsBufferRangeInUse(cbs.Value.CommandBufferIndex, offset, dataSize)))
             {
                 // If the buffer hasn't been used on the command buffer yet, try to preload the data.
                 // This avoids ending and beginning render passes on each buffer data upload.

Ryujinx.Graphics.Vulkan/DescriptorSetUpdater.cs

@@ -130,6 +130,12 @@ namespace Ryujinx.Graphics.Vulkan
                 1f));
         }
 
+        public void Initialize()
+        {
+            Span<byte> dummyTextureData = stackalloc byte[4];
+            _dummyTexture.SetData(dummyTextureData);
+        }
+
         public void SetProgram(ShaderCollection program)
         {
             _program = program;

Ryujinx.Graphics.Vulkan/PipelineBase.cs

@@ -49,7 +49,6 @@ namespace Ryujinx.Graphics.Vulkan
         private Auto<DisposableFramebuffer> _framebuffer;
         private Auto<DisposableRenderPass> _renderPass;
         private int _writtenAttachmentCount;
-        private bool _renderPassActive;
 
         private readonly DescriptorSetUpdater _descriptorSetUpdater;
 
@@ -73,6 +72,7 @@ namespace Ryujinx.Graphics.Vulkan
         private PipelineColorBlendAttachmentState[] _storedBlend;
 
         public ulong DrawCount { get; private set; }
+        public bool RenderPassActive { get; private set; }
 
         public unsafe PipelineBase(VulkanRenderer gd, Device device)
         {
@@ -114,6 +114,8 @@ namespace Ryujinx.Graphics.Vulkan
 
         public void Initialize()
         {
+            _descriptorSetUpdater.Initialize();
+
             SupportBufferUpdater = new SupportBufferUpdater(Gd);
             SupportBufferUpdater.UpdateRenderScale(_renderScale, 0, SupportBuffer.RenderScaleMaxCount);
 
@@ -838,6 +840,11 @@ namespace Ryujinx.Graphics.Vulkan
             stages.CopyTo(_newState.Stages.AsSpan().Slice(0, stages.Length));
 
             SignalStateChange();
+
+            if (_program.IsCompute)
+            {
+                EndRenderPass();
+            }
         }
 
         public void Specialize<T>(in T data) where T : unmanaged
@@ -1451,7 +1458,7 @@ namespace Ryujinx.Graphics.Vulkan
 
         private unsafe void BeginRenderPass()
         {
-            if (!_renderPassActive)
+            if (!RenderPassActive)
             {
                 var renderArea = new Rect2D(null, new Extent2D(FramebufferParams.Width, FramebufferParams.Height));
                 var clearValue = new ClearValue();
@@ -1467,18 +1474,18 @@ namespace Ryujinx.Graphics.Vulkan
                 };
 
                 Gd.Api.CmdBeginRenderPass(CommandBuffer, renderPassBeginInfo, SubpassContents.Inline);
-                _renderPassActive = true;
+                RenderPassActive = true;
             }
         }
 
         public void EndRenderPass()
         {
-            if (_renderPassActive)
+            if (RenderPassActive)
             {
                 PauseTransformFeedbackInternal();
                 Gd.Api.CmdEndRenderPass(CommandBuffer);
                 SignalRenderPassEnd();
-                _renderPassActive = false;
+                RenderPassActive = false;
             }
         }
 

Ryujinx.Graphics.Vulkan/ShaderCollection.cs

@@ -19,6 +19,7 @@ namespace Ryujinx.Graphics.Vulkan
 
         public bool HasMinimalLayout { get; }
         public bool UsePushDescriptors { get; }
+        public bool IsCompute { get; }
 
         public uint Stages { get; }
 
@@ -47,7 +48,6 @@ namespace Ryujinx.Graphics.Vulkan
         private VulkanRenderer _gd;
         private Device _device;
         private bool _initialized;
-        private bool _isCompute;
 
         private ProgramPipelineState _state;
         private DisposableRenderPass _dummyRenderPass;
@@ -91,7 +91,7 @@ namespace Ryujinx.Graphics.Vulkan
 
                 if (shader.StageFlags == ShaderStageFlags.ShaderStageComputeBit)
                 {
-                    _isCompute = true;
+                    IsCompute = true;
                 }
 
                 internalShaders[i] = shader;
@@ -163,7 +163,7 @@ namespace Ryujinx.Graphics.Vulkan
 
             try
             {
-                if (_isCompute)
+                if (IsCompute)
                 {
                     CreateBackgroundComputePipeline();
                 }

Ryujinx.Graphics.Vulkan/VulkanRenderer.cs

@@ -396,6 +396,7 @@ namespace Ryujinx.Graphics.Vulkan
                 supportsFragmentShaderOrderingIntel: false,
                 supportsGeometryShaderPassthrough: Capabilities.SupportsGeometryShaderPassthrough,
                 supportsImageLoadFormatted: features2.Features.ShaderStorageImageReadWithoutFormat,
+                supportsLayerVertexTessellation: featuresVk12.ShaderOutputLayer,
                 supportsMismatchingViewFormat: true,
                 supportsCubemapView: !IsAmdGcn,
                 supportsNonConstantTextureOffset: false,

Ryujinx/Ui/Windows/SettingsWindow.glade

@@ -1749,11 +1749,11 @@
                                 <property name="orientation">vertical</property>
                                 <child>
                                   <object class="GtkCheckButton" id="_expandRamToggle">
-                                    <property name="label" translatable="yes">Expand DRAM Size to 6GiB</property>
+                                    <property name="label" translatable="yes">Use alternative memory layout (Developers)</property>
                                     <property name="visible">True</property>
                                     <property name="can-focus">True</property>
                                     <property name="receives-default">False</property>
-                                    <property name="tooltip-text" translatable="yes">Increases the amount of memory on the emulated system from 4GiB to 6GiB.&#13;This is only useful for higher-resolution texture packs or 4k resolution mods. Does NOT improve performance.&#13;Leave OFF if unsure.</property>
+                                    <property name="tooltip-text" translatable="yes">Utilizes an alternative MemoryMode layout to mimic a Switch development model.&#13;This is only useful for higher-resolution texture packs or 4k resolution mods. Does NOT improve performance.&#13;Leave OFF if unsure.</property>
                                     <property name="halign">start</property>
                                     <property name="margin-top">5</property>
                                     <property name="margin-bottom">5</property>