sampler.hpp

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#pragma once

#include <gli/filter.hpp>

namespace gli
{
        enum wrap
        {
                WRAP_CLAMP_TO_EDGE, WRAP_FIRST = WRAP_CLAMP_TO_EDGE,
                WRAP_CLAMP_TO_BORDER,
                WRAP_REPEAT,
                WRAP_MIRROR_REPEAT,
                WRAP_MIRROR_CLAMP_TO_EDGE,
                WRAP_MIRROR_CLAMP_TO_BORDER, WRAP_LAST = WRAP_MIRROR_CLAMP_TO_BORDER
        };

        enum
        {
                WRAP_COUNT = WRAP_LAST - WRAP_FIRST + 1
        };

        inline bool is_border(wrap Wrap)
        {
                return Wrap == WRAP_CLAMP_TO_BORDER || Wrap == WRAP_MIRROR_CLAMP_TO_BORDER;
        }

        class sampler
        {
        public:
                sampler(wrap Wrap, filter Mip, filter Min);

        protected:
                typedef float(*wrap_type)(float const & SamplerCoord);

                wrap_type getFunc(wrap WrapMode) const;

                wrap_type Wrap;
                filter Mip;
                filter Min;
        };
}//namespace gli

#include "./core/sampler.inl"