UploadBuffer.h

#pragma once
 
// Standard.
#include <memory>
#include <cstring>
 
namespace ne {
    class GpuResource;
 
    class UploadBuffer {
    public:
        UploadBuffer(
            std::unique_ptr<GpuResource> pGpuResourceToUse, size_t iElementSizeInBytes, size_t iElementCount);
 
        ~UploadBuffer();
 
        UploadBuffer() = delete;
        UploadBuffer(UploadBuffer&) = delete;
        UploadBuffer& operator=(UploadBuffer&) = delete;
 
        inline void copyDataToElement(size_t iElementIndex, const void* pData, size_t iDataSize) {
            std::memcpy(&pMappedResourceData[iElementIndex * iElementSizeInBytes], pData, iDataSize);
        }
 
        size_t getElementCount() const;
 
        size_t getElementSizeInBytes() const;
 
        GpuResource* getInternalResource() const;
 
    private:
        std::unique_ptr<GpuResource> pGpuResource;
 
        unsigned char* pMappedResourceData = nullptr;
 
        size_t iElementSizeInBytes = 0;
 
        size_t iElementCount = 0;
    };
} // namespace ne