From 0b6d3a313ea78041ba39cac17d0b4e9c2685c693 Mon Sep 17 00:00:00 2001
From: Wojciech Figat <wojtek@figat.pl>
Date: Thu, 21 Apr 2022 12:08:23 +0200
Subject: [PATCH] Fix new dynamic buffers to be actually dynamic

---
 Source/Engine/Graphics/DynamicBuffer.cpp | 8 +++++++-
 Source/Engine/Graphics/DynamicBuffer.h   | 5 +----
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/Source/Engine/Graphics/DynamicBuffer.cpp b/Source/Engine/Graphics/DynamicBuffer.cpp
index 29882aef5..d4db1b957 100644
--- a/Source/Engine/Graphics/DynamicBuffer.cpp
+++ b/Source/Engine/Graphics/DynamicBuffer.cpp
@@ -89,6 +89,12 @@ void DynamicBuffer::Dispose()
     Data.Resize(0);
 }
 
+void DynamicStructuredBuffer::InitDesc(GPUBufferDescription& desc, int32 numElements)
+{
+    desc = GPUBufferDescription::Structured(numElements, _stride, _isUnorderedAccess);
+    desc.Usage = GPUResourceUsage::Dynamic;
+}
+
 DynamicTypedBuffer::DynamicTypedBuffer(uint32 initialCapacity, PixelFormat format, bool isUnorderedAccess, const String& name)
     : DynamicBuffer(initialCapacity, PixelFormatExtensions::SizeInBytes(format), name)
     , _format(format)
@@ -101,5 +107,5 @@ 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);
+    desc = GPUBufferDescription::Buffer(numElements * _stride, bufferFlags, _format, nullptr, _stride, GPUResourceUsage::Dynamic);
 }
diff --git a/Source/Engine/Graphics/DynamicBuffer.h b/Source/Engine/Graphics/DynamicBuffer.h
index 507c284de..9f251ff14 100644
--- a/Source/Engine/Graphics/DynamicBuffer.h
+++ b/Source/Engine/Graphics/DynamicBuffer.h
@@ -197,10 +197,7 @@ public:
 protected:
 
     // [DynamicBuffer]
-    void InitDesc(GPUBufferDescription& desc, int32 numElements) override
-    {
-        desc = GPUBufferDescription::Structured(numElements, _stride, _isUnorderedAccess);
-    }
+    void InitDesc(GPUBufferDescription& desc, int32 numElements) override;
 };
 
 /// <summary>