Add DynamicTypedBuffer utility

Source/Engine/Graphics/DynamicBuffer.cpp

@@ -1,6 +1,7 @@
 // Copyright (c) 2012-2022 Wojciech Figat. All rights reserved.
 
 #include "DynamicBuffer.h"
+#include "PixelFormatExtensions.h"
 #include "GPUDevice.h"
 #include "Engine/Core/Log.h"
 #include "Engine/Core/Utilities.h"
@@ -87,3 +88,18 @@ void DynamicBuffer::Dispose()
     SAFE_DELETE_GPU_RESOURCE(_buffer);
     Data.Resize(0);
 }
+
+DynamicTypedBuffer::DynamicTypedBuffer(uint32 initialCapacity, PixelFormat format, bool isUnorderedAccess, const String& name)
+    : DynamicBuffer(initialCapacity, PixelFormatExtensions::SizeInBytes(format), name)
+    , _format(format)
+    , _isUnorderedAccess(isUnorderedAccess)
+{
+}
+
+void DynamicTypedBuffer::InitDesc(GPUBufferDescription& desc, int32 numElements)
+{
+    auto bufferFlags = GPUBufferFlags::ShaderResource;
+    if (_isUnorderedAccess)
+        bufferFlags |= GPUBufferFlags::UnorderedAccess;
+    desc = GPUBufferDescription::Buffer(numElements * _stride, bufferFlags, _format, nullptr, _stride);
+}

Source/Engine/Graphics/DynamicBuffer.h

@@ -202,3 +202,29 @@ protected:
         desc = GPUBufferDescription::Structured(numElements, _stride, _isUnorderedAccess);
     }
 };
+
+/// <summary>
+/// Dynamic Typed buffer that allows to upload data to the GPU from CPU (supports dynamic resizing).
+/// </summary>
+class FLAXENGINE_API DynamicTypedBuffer : public DynamicBuffer
+{
+private:
+    PixelFormat _format;
+    bool _isUnorderedAccess;
+
+public:
+
+    /// <summary>
+    /// Init
+    /// </summary>
+    /// <param name="initialCapacity">Initial capacity of the buffer (in bytes).</param>
+    /// <param name="format">Format of the data.</param>
+    /// <param name="isUnorderedAccess">True if unordered access usage.</param>
+    /// <param name="name">Buffer name.</param>
+    DynamicTypedBuffer(uint32 initialCapacity, PixelFormat format, bool isUnorderedAccess = false, const String& name = String::Empty);
+
+protected:
+
+    // [DynamicBuffer]
+    void InitDesc(GPUBufferDescription& desc, int32 numElements) override;
+};