Add ComputeMipLevelsCount overload taking a texture descriptor

Author: TheMostDiligent

Graphics/GraphicsAccessories/interface/GraphicsAccessories.hpp

@@ -530,6 +530,9 @@ Uint32 ComputeMipLevelsCount(Uint32 Width, Uint32 Height);
 /// Returns the number of mip levels for the specified texture dimensions
 Uint32 ComputeMipLevelsCount(Uint32 Width, Uint32 Height, Uint32 Depth);
 
+/// Returns the number of mip levels for the specified texture description
+Uint32 ComputeMipLevelsCount(const TextureDesc& TexDesc);
+
 /// Checks if the specified filter type is a point filter
 inline bool IsComparisonFilter(FILTER_TYPE FilterType)
 {

Graphics/GraphicsAccessories/src/GraphicsAccessories.cpp

@@ -2028,6 +2028,11 @@ Uint32 ComputeMipLevelsCount(Uint32 Width, Uint32 Height, Uint32 Depth)
     return ComputeMipLevelsCount(std::max(std::max(Width, Height), Depth));
 }
 
+Uint32 ComputeMipLevelsCount(const TextureDesc& TexDesc)
+{
+    return ComputeMipLevelsCount(TexDesc.GetWidth(), TexDesc.GetHeight(), TexDesc.GetDepth());
+}
+
 bool VerifyResourceStates(RESOURCE_STATE State, bool IsTexture)
 {
     static_assert(RESOURCE_STATE_MAX_BIT == (1u << 21), "Please update this function to handle the new resource state");