cs237-memory-obj.hpp

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/*
 * COPYRIGHT (c) 2023 John Reppy (http://cs.uchicago.edu/~jhr)
 * All rights reserved.
 */
 
#ifndef _CS237_MEMORY_OBJ_HPP_
#define _CS237_MEMORY_OBJ_HPP_
 
#ifndef _CS237_HPP_
#error "cs237-memory.hpp should not be included directly"
#endif
 
namespace cs237 {
 
class MemoryObj {
    friend class Buffer;
 
public:
    MemoryObj (Application *app, vk::MemoryRequirements const &reqs);
    ~MemoryObj ();
 
    void copyTo (const void *src, size_t offset, size_t sz)
    {
        assert (offset + sz <= this->_sz);
 
        auto dev = this->_app->_device;
 
        // first we need to map the object into our address space
        auto dst = dev.mapMemory(this->_mem, offset, this->_sz, {});
        // copy the data
        memcpy(dst, src, sz);
        // unmap the object
        this->_app->_device.unmapMemory (this->_mem);
    }
 
    void copyTo (const void *src) { this->copyTo(src, 0, this->_sz); }
 
    size_t size () const { return this->_sz; }
 
protected:
    Application *_app;          
    vk::DeviceMemory _mem;      
    size_t _sz;                 
 
};
 
} // namespace cs237
 
#endif // !_CS237_MEMORY_OBJ_HPP_