/// @brief Include to use 1d array textures.
/// @file gli/texture1d_array.hpp

#pragma once

#include "texture1d.hpp"

namespace gli {

    /// 1d array texture
    class texture1d_array : public texture {
    public:
        typedef extent1d extent_type;

    public:
        /// Create an empty texture 1D array
        texture1d_array();

        /// Create a texture1d_array and allocate a new storage_linear
        texture1d_array(
            format_type Format,
            extent_type const& Extent,
            size_type Layers,
            size_type Levels,
            swizzles_type const& Swizzles = swizzles_type(SWIZZLE_RED, SWIZZLE_GREEN, SWIZZLE_BLUE, SWIZZLE_ALPHA));

        /// Create a texture1d_array and allocate a new storage_linear with a complete mipmap chain
        texture1d_array(
            format_type Format,
            extent_type const& Extent,
            size_type Layers,
            swizzles_type const& Swizzles = swizzles_type(SWIZZLE_RED, SWIZZLE_GREEN, SWIZZLE_BLUE, SWIZZLE_ALPHA));

        /// Create a texture1d_array view with an existing storage_linear
        explicit texture1d_array(
                texture const& Texture);

        /// Create a texture1d_array view with an existing storage_linear
        texture1d_array(
            texture const& Texture,
            format_type Format,
            size_type BaseLayer, size_type MaxLayer,
            size_type BaseFace, size_type MaxFace,
            size_type BaseLevel, size_type MaxLevel,
            swizzles_type const& Swizzles = swizzles_type(SWIZZLE_RED, SWIZZLE_GREEN, SWIZZLE_BLUE, SWIZZLE_ALPHA));

        /// Create a texture view, reference a subset of an exiting storage_linear
        texture1d_array(
            texture1d_array const& Texture,
            size_type BaseLayer, size_type MaxLayer,
            size_type BaseLevel, size_type MaxLevel);

        /// Create a view of the texture identified by Layer in the texture array
        texture1d operator[](size_type Layer) const;

        /// Return the width of a texture instance
        extent_type extent(size_type Level = 0) const;

        /// Fetch a texel from a texture. The texture format must be uncompressed.
        template <typename gen_type>
        gen_type load(extent_type const& TexelCoord, size_type Layer, size_type Level) const;

        /// Write a texel to a texture. The texture format must be uncompressed.
        template <typename gen_type>
        void store(extent_type const& TexelCoord, size_type Layer, size_type Level, gen_type const& Texel);
    };
}//namespace gli

extern "C" {

    namespace bindings {

        namespace Texture1DArray {

            using gli::texture1d_array;

            texture1d_array tex1darray_new_empty() {
                return texture1d_array();
            }

            texture1d_array tex1darray_new_(texture1d_array::format_type format, texture1d_array::extent_type extent, texture1d_array::size_type layers, texture1d_array::size_type levels) {
                return texture1d_array(format, extent, layers, levels);
            }

            texture1d_array tex1darray_new_with_mipmap_chain(texture1d_array::format_type format, texture1d_array::extent_type extent, texture1d_array::size_type layers) {
                return texture1d_array(format, extent, layers);
            }

            texture1d_array tex1darray_share_from(const gli::texture & tex) {
                return texture1d_array(tex);
            }

            texture1d_array tex1darray_share_from_detail(
                const gli::texture & tex,
                texture1d_array::format_type format,
                texture1d_array::size_type base_layer, texture1d_array::size_type max_layer,
                texture1d_array::size_type base_face,  texture1d_array::size_type  max_face,
                texture1d_array::size_type base_level, texture1d_array::size_type max_level) {

                return texture1d_array(tex, format, base_layer, max_layer, base_face, max_face, base_level, max_level);
            }

            texture1d_array tex1darray_share_from_subset(
                const texture1d_array & tex,
                texture1d_array::size_type base_layer, texture1d_array::size_type max_layer,
                texture1d_array::size_type base_level, texture1d_array::size_type max_level) {

                return texture1d_array(tex, base_layer, max_layer, base_level, max_level);
            }

            texture1d_array::extent_type tex1darray_extent(const texture1d_array & tex, texture1d_array::size_type level = 0) {
                return tex.extent(level);
            }
        }
    }
}

#ifdef GLI_IMPLEMENTATION
#include "texture1d_array.inl"
#endif