Refactor and enhance resource management and rendering

Updated multiple components to improve encapsulation, maintainability, and performance. Key changes include:

- Upgraded package dependencies in project files.
- Refactored `Mesh` and `RenderingContext` to use properties and added support for per-object constant buffers.
- Improved resource management in `D3D12CommandBuffer`, `D3D12CommandQueue`, and `D3D12ResourceAllocator` with better encapsulation and disposal handling.
- Added validation for constant buffer sizes in `D3D12PipelineLibrary`.
- Simplified `MeshBuilder` methods to accept allocators and removed hardcoded values.
- Enhanced debugging with `GPUResourceLeakException` and resource tracking updates.
- Updated shaders and rendering logic for testing, including hardcoded triangle rendering.
- Removed redundant base classes and interfaces for cleaner code structure.

Ghost.Graphics/Core/Material.cs

@@ -18,7 +18,9 @@ internal struct CBufferCache : IResourceReleasable
     public readonly Handle<GraphicsBuffer> GpuResource => _gpuResource;
     public readonly uint AlignedSize => _alignedSize;
 
-    public unsafe CBufferCache(Handle<GraphicsBuffer> buffer, uint bufferSize)
+    public readonly bool IsCreated => _gpuResource.IsValid && _cpuData.IsCreated;
+
+    public CBufferCache(Handle<GraphicsBuffer> buffer, uint bufferSize)
     {
         _alignedSize = (bufferSize + 255u) & ~255u;
 
@@ -65,6 +67,11 @@ public struct Material : IResourceReleasable, IHandleType
             var pass = database.GetShaderPass(shader.GetPassKey(i));
             var cbufferInfo = pass.CBuffer;
 
+            if (cbufferInfo.SizeInBytes == 0)
+            {
+                continue;
+            }
+
             var desc = new BufferDesc
             {
                 Size = cbufferInfo.SizeInBytes,
@@ -91,7 +98,7 @@ public struct Material : IResourceReleasable, IHandleType
 public ref struct MaterialAccessor
 {
     private ref Material _materialData;
-    private Shader _shader;
+    private readonly Shader _shader;
 
     private readonly IResourceDatabase _resourceDatabase;