Vulkan: Use push descriptors for uniform bindings when possible (#6154)

* Fix Push Descriptors

* Use push descriptor templates

* Use reserved bindings

* Formatting

* Disable when using MVK

("my heart will go on" starts playing as thousands of mac users shed a tear in unison)

* Introduce limit on push descriptor binding number

The bitmask used for updating push descriptors is ulong, so only 64 bindings can be tracked for now.

* Address feedback

* Fix logic for binding rejection

Should only offset limit when reserved bindings are less than the requested one.

* Workaround pascal and older nv bug

* Add GPU number detection for nvidia

* Only do workaround if it's valid to do so.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/Ryujinx.Graphics.Vulkan/DescriptorSetTemplateUpdater.cs b/src/Ryujinx.Graphics.Vulkan/DescriptorSetTemplateUpdater.cs
index 1eb9dce7..88db7e76 100644
--- a/src/Ryujinx.Graphics.Vulkan/DescriptorSetTemplateUpdater.cs
+++ b/src/Ryujinx.Graphics.Vulkan/DescriptorSetTemplateUpdater.cs
@@ -52,11 +52,23 @@ namespace Ryujinx.Graphics.Vulkan
             return new DescriptorSetTemplateWriter(new Span<byte>(_data.Pointer, template.Size));
         }
 
+        public DescriptorSetTemplateWriter Begin(int maxSize)
+        {
+            EnsureSize(maxSize);
+
+            return new DescriptorSetTemplateWriter(new Span<byte>(_data.Pointer, maxSize));
+        }
+
         public void Commit(VulkanRenderer gd, Device device, DescriptorSet set)
         {
             gd.Api.UpdateDescriptorSetWithTemplate(device, set, _activeTemplate.Template, _data.Pointer);
         }
 
+        public void CommitPushDescriptor(VulkanRenderer gd, CommandBufferScoped cbs, DescriptorSetTemplate template, PipelineLayout layout)
+        {
+            gd.PushDescriptorApi.CmdPushDescriptorSetWithTemplate(cbs.CommandBuffer, template.Template, layout, 0, _data.Pointer);
+        }
+
         public void Dispose()
         {
             _data?.Dispose();