Implement scaled vertex format emulation (#5564)

* Implement scaled vertex format emulation

* Auto-format (whitespace)

* Delete ToVec4Type

2 files changed, 62 insertions, 0 deletions

diff --git a/src/Ryujinx.Graphics.Vulkan/FormatCapabilities.cs b/src/Ryujinx.Graphics.Vulkan/FormatCapabilities.cs
index 5f7deeb6..7307a0ee 100644
--- a/src/Ryujinx.Graphics.Vulkan/FormatCapabilities.cs
+++ b/src/Ryujinx.Graphics.Vulkan/FormatCapabilities.cs
@@ -9,6 +9,48 @@ namespace Ryujinx.Graphics.Vulkan
 {
     class FormatCapabilities
     {
+        private static readonly GAL.Format[] _scaledFormats = {
+            GAL.Format.R8Uscaled,
+            GAL.Format.R8Sscaled,
+            GAL.Format.R16Uscaled,
+            GAL.Format.R16Sscaled,
+            GAL.Format.R8G8Uscaled,
+            GAL.Format.R8G8Sscaled,
+            GAL.Format.R16G16Uscaled,
+            GAL.Format.R16G16Sscaled,
+            GAL.Format.R8G8B8Uscaled,
+            GAL.Format.R8G8B8Sscaled,
+            GAL.Format.R16G16B16Uscaled,
+            GAL.Format.R16G16B16Sscaled,
+            GAL.Format.R8G8B8A8Uscaled,
+            GAL.Format.R8G8B8A8Sscaled,
+            GAL.Format.R16G16B16A16Uscaled,
+            GAL.Format.R16G16B16A16Sscaled,
+            GAL.Format.R10G10B10A2Uscaled,
+            GAL.Format.R10G10B10A2Sscaled,
+        };
+
+        private static readonly GAL.Format[] _intFormats = {
+            GAL.Format.R8Uint,
+            GAL.Format.R8Sint,
+            GAL.Format.R16Uint,
+            GAL.Format.R16Sint,
+            GAL.Format.R8G8Uint,
+            GAL.Format.R8G8Sint,
+            GAL.Format.R16G16Uint,
+            GAL.Format.R16G16Sint,
+            GAL.Format.R8G8B8Uint,
+            GAL.Format.R8G8B8Sint,
+            GAL.Format.R16G16B16Uint,
+            GAL.Format.R16G16B16Sint,
+            GAL.Format.R8G8B8A8Uint,
+            GAL.Format.R8G8B8A8Sint,
+            GAL.Format.R16G16B16A16Uint,
+            GAL.Format.R16G16B16A16Sint,
+            GAL.Format.R10G10B10A2Uint,
+            GAL.Format.R10G10B10A2Sint,
+        };
+
         private readonly FormatFeatureFlags[] _bufferTable;
         private readonly FormatFeatureFlags[] _optimalTable;
 
@@ -66,6 +108,25 @@ namespace Ryujinx.Graphics.Vulkan
             return (formatFeatureFlags & flags) == flags;
         }
 
+        public bool SupportsScaledVertexFormats()
+        {
+            // We want to check is all scaled formats are supported,
+            // but if the integer variant is not supported either,
+            // then the format is likely not supported at all,
+            // we ignore formats that are entirely unsupported here.
+
+            for (int i = 0; i < _scaledFormats.Length; i++)
+            {
+                if (!BufferFormatSupports(FormatFeatureFlags.VertexBufferBit, _scaledFormats[i]) &&
+                    BufferFormatSupports(FormatFeatureFlags.VertexBufferBit, _intFormats[i]))
+                {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
         public bool BufferFormatSupports(FormatFeatureFlags flags, VkFormat format)
         {
             _api.GetPhysicalDeviceFormatProperties(_physicalDevice, format, out var fp);
diff --git a/src/Ryujinx.Graphics.Vulkan/VulkanRenderer.cs b/src/Ryujinx.Graphics.Vulkan/VulkanRenderer.cs
index 20b32c70..3383d728 100644
--- a/src/Ryujinx.Graphics.Vulkan/VulkanRenderer.cs
+++ b/src/Ryujinx.Graphics.Vulkan/VulkanRenderer.cs
@@ -604,6 +604,7 @@ namespace Ryujinx.Graphics.Vulkan
                 supportsMismatchingViewFormat: true,
                 supportsCubemapView: !IsAmdGcn,
                 supportsNonConstantTextureOffset: false,
+                supportsScaledVertexFormats: FormatCapabilities.SupportsScaledVertexFormats(),
                 supportsShaderBallot: false,
                 supportsShaderBarrierDivergence: Vendor != Vendor.Intel,
                 supportsShaderFloat64: Capabilities.SupportsShaderFloat64,