Fix some engine API to be exposed for C++ scripting

Source/Editor/Content/PreviewsCache.cpp

@@ -36,7 +36,7 @@ bool PreviewsCache::FlushTask::Run()
         return true;
     }
     auto mipData = _data.GetData(0, 0);
-    ASSERT(mipData->DepthPitch == CalculateTextureMemoryUsage(_cache->GetTexture()->Format(), _cache->Width(), _cache->Height(), 1));
+    ASSERT(mipData->DepthPitch == RenderTools::CalculateTextureMemoryUsage(_cache->GetTexture()->Format(), _cache->Width(), _cache->Height(), 1));
 
     ScopeLock lock(_cache->Locker);
 
@@ -250,7 +250,7 @@ CreateAssetResult PreviewsCache::create(CreateAssetContext& context)
     context.Data.CustomData.Copy(&textureHeader);
 
     // Create blank image (chunk 0)
-    uint64 imageSize = CalculateTextureMemoryUsage(ASSETS_ICONS_ATLAS_FORMAT, ASSETS_ICONS_ATLAS_SIZE, ASSETS_ICONS_ATLAS_SIZE, 1);
+    uint64 imageSize = RenderTools::CalculateTextureMemoryUsage(ASSETS_ICONS_ATLAS_FORMAT, ASSETS_ICONS_ATLAS_SIZE, ASSETS_ICONS_ATLAS_SIZE, 1);
     ASSERT(imageSize <= MAX_int32);
     if (context.AllocateChunk(0))
         return CreateAssetResult::CannotAllocateChunk;

Source/Engine/Foliage/FoliageInstance.h

@@ -10,7 +10,7 @@
 /// <summary>
 /// Foliage instanced mesh instance. Packed data with very little of logic. Managed by the foliage chunks and foliage actor itself.
 /// </summary>
-API_STRUCT(NoPod) struct FoliageInstance
+API_STRUCT(NoPod) struct FLAXENGINE_API FoliageInstance
 {
 DECLARE_SCRIPTING_TYPE_NO_SPAWN(FoliageInstance);
 

Source/Engine/Graphics/RenderTools.cpp

@@ -395,6 +395,35 @@ void RenderTools::UpdateModelLODTransition(byte& lodTransition)
     lodTransition = static_cast<byte>(Math::Min<int32>(newProgress, 255));
 }
 
+uint64 RenderTools::CalculateTextureMemoryUsage(PixelFormat format, int32 width, int32 height, int32 mipLevels)
+{
+    uint64 result = 0;
+
+    if (mipLevels == 0)
+        mipLevels = 69;
+
+    uint32 rowPitch, slicePitch;
+    while (mipLevels > 0 && (width >= 1 || height >= 1))
+    {
+        ComputePitch(format, width, height, rowPitch, slicePitch);
+        result += slicePitch;
+
+        if (width > 1)
+            width >>= 1;
+        if (height > 1)
+            height >>= 1;
+
+        mipLevels--;
+    }
+
+    return result;
+}
+
+uint64 RenderTools::CalculateTextureMemoryUsage(PixelFormat format, int32 width, int32 height, int32 depth, int32 mipLevels)
+{
+    return CalculateTextureMemoryUsage(format, width, height, mipLevels) * depth;
+}
+
 float RenderTools::ComputeBoundsScreenRadiusSquared(const Vector3& origin, float radius, const Vector3& viewOrigin, const Matrix& projectionMatrix)
 {
     const float screenMultiple = 0.5f * Math::Max(projectionMatrix.Values[0][0], projectionMatrix.Values[1][1]);
@@ -452,35 +481,6 @@ int32 RenderTools::ComputeSkinnedModelLOD(const SkinnedModel* model, const Vecto
     return 0;
 }
 
-uint64 CalculateTextureMemoryUsage(PixelFormat format, int32 width, int32 height, int32 mipLevels)
-{
-    uint64 result = 0;
-
-    if (mipLevels == 0)
-        mipLevels = 69;
-
-    uint32 rowPitch, slicePitch;
-    while (mipLevels > 0 && (width >= 1 || height >= 1))
-    {
-        RenderTools::ComputePitch(format, width, height, rowPitch, slicePitch);
-        result += slicePitch;
-
-        if (width > 1)
-            width >>= 1;
-        if (height > 1)
-            height >>= 1;
-
-        mipLevels--;
-    }
-
-    return result;
-}
-
-uint64 CalculateTextureMemoryUsage(PixelFormat format, int32 width, int32 height, int32 depth, int32 mipLevels)
-{
-    return CalculateTextureMemoryUsage(format, width, height, mipLevels) * depth;
-}
-
 int32 MipLevelsCount(int32 width, bool useMipLevels)
 {
     if (!useMipLevels)

Source/Engine/Graphics/RenderTools.h

@@ -18,7 +18,7 @@ PACK_STRUCT(struct QuadShaderData
 /// <summary>
 /// Set of utilities for rendering.
 /// </summary>
-API_CLASS(Static) class RenderTools
+API_CLASS(Static) class FLAXENGINE_API RenderTools
 {
 DECLARE_SCRIPTING_TYPE_NO_SPAWN(RenderTools);
 public:
@@ -56,6 +56,8 @@ public:
 public:
 
     static void UpdateModelLODTransition(byte& lodTransition);
+    static uint64 CalculateTextureMemoryUsage(PixelFormat format, int32 width, int32 height, int32 mipLevels);
+    static uint64 CalculateTextureMemoryUsage(PixelFormat format, int32 width, int32 height, int32 depth, int32 mipLevels);
 
     /// <summary>
     /// Computes the bounds screen radius squared.
@@ -110,23 +112,6 @@ public:
     }
 };
 
-// Get texture memory usage
-// @param format Surface pixels format type
-// @param width Width in pixels
-// @param height Height in pixels
-// @param mipLevels Amount of mip levels
-// @returns Memory usage in bytes
-extern uint64 CalculateTextureMemoryUsage(PixelFormat format, int32 width, int32 height, int32 mipLevels);
-
-// Get texture memory usage
-// @param format Surface pixels format type
-// @param width Width in pixels
-// @param height Height in pixels
-// @param depth Depth in pixels
-// @param mipLevels Amount of mip levels
-// @returns Memory usage in bytes
-extern uint64 CalculateTextureMemoryUsage(PixelFormat format, int32 width, int32 height, int32 depth, int32 mipLevels);
-
 // Calculate mip levels count for a texture 1D
 // @param width Most detailed mip width
 // @param useMipLevels True if use mip levels, otherwise false (use only 1 mip)

Source/Engine/Graphics/Textures/GPUTexture.cpp

@@ -561,7 +561,7 @@ bool GPUTexture::Resize(int32 width, int32 height, int32 depth)
 
 uint64 GPUTexture::calculateMemoryUsage() const
 {
-    return CalculateTextureMemoryUsage(Format(), Width(), Height(), Depth(), MipLevels()) * ArraySize();
+    return RenderTools::CalculateTextureMemoryUsage(Format(), Width(), Height(), Depth(), MipLevels()) * ArraySize();
 }
 
 String GPUTexture::ToString() const

Source/Engine/Graphics/Textures/StreamingTexture.cpp

@@ -144,7 +144,7 @@ void StreamingTexture::UnloadTexture()
 uint64 StreamingTexture::GetTotalMemoryUsage() const
 {
     const uint64 arraySize = _header.IsCubeMap ? 6 : 1;
-    return CalculateTextureMemoryUsage(_header.Format, _header.Width, _header.Height, _header.MipLevels) * arraySize;
+    return RenderTools::CalculateTextureMemoryUsage(_header.Format, _header.Width, _header.Height, _header.MipLevels) * arraySize;
 }
 
 String StreamingTexture::ToString() const

Source/Engine/GraphicsDevice/DirectX/DX11/GPUSwapChainDX11.cpp

@@ -231,9 +231,9 @@ bool GPUSwapChainDX11::Resize(int32 width, int32 height)
     _width = width;
     _height = height;
 #if PLATFORM_WINDOWS
-    _memoryUsage = CalculateTextureMemoryUsage(RenderToolsDX::ToPixelFormat(swapChainDesc.BufferDesc.Format), _width, _height, 1) * swapChainDesc.BufferCount;
+    _memoryUsage = RenderTools::CalculateTextureMemoryUsage(RenderToolsDX::ToPixelFormat(swapChainDesc.BufferDesc.Format), _width, _height, 1) * swapChainDesc.BufferCount;
 #else
-    _memoryUsage = CalculateTextureMemoryUsage(RenderToolsDX::ToPixelFormat(swapChainDesc.Format), _width, _height, 1) * swapChainDesc.BufferCount;
+    _memoryUsage = RenderTools::CalculateTextureMemoryUsage(RenderToolsDX::ToPixelFormat(swapChainDesc.Format), _width, _height, 1) * swapChainDesc.BufferCount;
 #endif
 
     getBackBuffer();

Source/Engine/GraphicsDevice/DirectX/DX12/GPUSwapChainDX12.cpp

@@ -231,7 +231,7 @@ bool GPUSwapChainDX12::Resize(int32 width, int32 height)
     _currentFrameIndex = _swapChain->GetCurrentBackBufferIndex();
     _width = width;
     _height = height;
-    _memoryUsage = CalculateTextureMemoryUsage(_format, _width, _height, 1) * swapChainDesc.BufferCount;
+    _memoryUsage = RenderTools::CalculateTextureMemoryUsage(_format, _width, _height, 1) * swapChainDesc.BufferCount;
 
     getBackBuffer();
 #endif

Source/Engine/GraphicsDevice/Vulkan/GPUSwapChainVulkan.cpp

@@ -415,7 +415,7 @@ bool GPUSwapChainVulkan::CreateSwapChain(int32 width, int32 height)
     }
 
     // Calculate memory usage
-    _memoryUsage = CalculateTextureMemoryUsage(_format, _width, _height, 1) * _backBuffers.Count();
+    _memoryUsage = RenderTools::CalculateTextureMemoryUsage(_format, _width, _height, 1) * _backBuffers.Count();
 
     return false;
 }

Source/Engine/Level/Scene/SceneLightmapsData.h

@@ -52,7 +52,7 @@ public:
     /// </summary>
     /// <param name="index">Lightmap index</param>
     /// <returns>Lightmap or null if missing or not ready</returns>
-    Lightmap* GetReadyLightmap(int32 index);
+    FLAXENGINE_API Lightmap* GetReadyLightmap(int32 index);
 
     /// <summary>
     /// Gets lightmaps array

Source/Engine/Renderer/RenderList.h

@@ -207,8 +207,8 @@ class RenderListAllocation
 {
 public:
 
-    static void* Allocate(uintptr size);
+    static FLAXENGINE_API void* Allocate(uintptr size);
-    static void Free(void* ptr, uintptr size);
+    static FLAXENGINE_API void Free(void* ptr, uintptr size);
 
     template<typename T>
     class Data