IBuffer.h

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#pragma once

#include "swGraphicAPI/Resources/ResourceObject.h"
#include "swGraphicAPI/Rendering/GraphicAPIConstants.h"
#include "ResourcePtr.h"

#include "swCommonLib/Common/MemoryChunk.h"
#include "swCommonLib/System/Path.h"


class ShaderInputLayout;


enum class BufferType : uint8
{
    VertexBuffer,       
    IndexBuffer,        
    ConstantBuffer      
};


struct BufferInfo
{
    uint32              NumElements;    
    uint32              ElementSize;    
    rttr::type          DataType;       
    ResourceUsage       Usage;          
    BufferType          BufferType;     
    filesystem::Path    Name;           

    PrimitiveTopology                   Topology;           

    ResourcePtr< ShaderInputLayout >    VertexLayout;       

    bool                                Use4BytesIndex;     

    BufferInfo()
        : DataType( rttr::type::get_by_name( "" ) ) // Set invalid type.
    {}

    std::string     GetName () const        { return Name.String(); }
};


class IBuffer   :   public ResourceObject
{
    RTTR_ENABLE( ResourceObject )
private:

protected:
    IBuffer() : ResourceObject( 0 ) {}
    virtual ~IBuffer() = default;
public:
    virtual MemoryChunk         CopyData        () = 0;             
    virtual const BufferInfo&   GetDescriptor   () const = 0;       
};