ShaderBuffer.hpp

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#ifndef GALAXY_GRAPHICS_GL_SHADERBUFFER_HPP_
#define GALAXY_GRAPHICS_GL_SHADERBUFFER_HPP_
 
#include <glad/glad.h>
 
#include "galaxy/graphics/Enums.hpp"
 
namespace galaxy
{
    class ShaderBuffer final
    {
    public:
        ShaderBuffer();
 
        ShaderBuffer(const GLBufferBinding index);
 
        ShaderBuffer(ShaderBuffer&&) noexcept;
 
        ShaderBuffer& operator=(ShaderBuffer&&) noexcept;
 
        ~ShaderBuffer();
 
        void set_index(const GLBufferBinding index);
 
        template<typename Object>
        void buffer(const unsigned int count, Object* data);
 
        template<typename Object>
        void sub_buffer(const unsigned int offset, const unsigned int count, Object* data);
 
        void bind() const;
 
        void unbind() const;
 
        void clear() const;
 
        void destroy();
 
        [[nodiscard]]
        unsigned int id() const noexcept;
 
    private:
        ShaderBuffer(const ShaderBuffer&) = delete;
 
        ShaderBuffer& operator=(const ShaderBuffer&) = delete;
 
    private:
        unsigned int m_id;
 
        int m_index;
    };
 
    template<typename Object>
    inline void ShaderBuffer::buffer(const unsigned int count, Object* data)
    {
        clear();
 
        constexpr const auto size = sizeof(Object);
        glNamedBufferData(m_id, count * size, static_cast<void*>(data), GL_DYNAMIC_DRAW);
    }
 
    template<typename Object>
    inline void ShaderBuffer::sub_buffer(const unsigned int offset, const unsigned int count, Object* data)
    {
        constexpr const auto size = sizeof(Object);
        glNamedBufferSubData(m_id, offset, count * size, static_cast<void*>(data));
    }
} // namespace galaxy
 
#endif