CommandBuffer/RenderContext.h at master · tuxalin/CommandBuffer · GitHub

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//
//  RenderContext.h
//

#pragma once

namespace cb
{
    struct RenderContext
    {
        typedef void(*function_t)(const void* command, cb::RenderContext* rc);

        RenderContext(void* contextData);

        template <class ContextClass>
        ContextClass& data();
        template <class ContextClass>
        const ContextClass& data() const;
    private:
        void* m_contextData;
    };

    inline RenderContext::RenderContext(void* contextData)
        : m_contextData(contextData)
    {}

    template <class ContextClass>
    inline ContextClass& RenderContext::data()
    {
        return *reinterpret_cast<ContextClass*>(m_contextData);
    }

    template <class ContextClass>
    inline const ContextClass& RenderContext::data() const
    {
        return *reinterpret_cast<const ContextClass*>(m_contextData);
    }
}