texture.h

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#pragma once
 
#include "handle_impl.h"
#include <base/basetypes.hpp>
#include <memory>
 
namespace gfx
{
struct texture : public handle_impl<texture, texture_handle>
{
    //-----------------------------------------------------------------------------
    //  Name : Texture ()
    //-----------------------------------------------------------------------------
    texture() = default;
 
    texture(const char* _path,
            std::uint64_t _flags = BGFX_TEXTURE_NONE | BGFX_SAMPLER_NONE,
            std::uint8_t _skip = 0,
            texture_info* _info = nullptr);
 
    texture(const void* _data,
            std::uint32_t _size,
            std::uint64_t _flags = BGFX_TEXTURE_NONE | BGFX_SAMPLER_NONE,
            std::uint8_t _skip = 0,
            texture_info* _info = nullptr,
            const char* _name = nullptr);
 
    //-----------------------------------------------------------------------------
    //  Name : Texture ()
    //-----------------------------------------------------------------------------
    texture(std::uint16_t _width,
            std::uint16_t _height,
            bool _hasMips,
            std::uint16_t _numLayers,
            texture_format _format,
            std::uint64_t _flags = BGFX_TEXTURE_NONE | BGFX_SAMPLER_NONE,
            const memory_view* _mem = nullptr);
 
 
    //-----------------------------------------------------------------------------
    //  Name : Texture ()
    //-----------------------------------------------------------------------------
    texture(std::uint16_t _width,
            std::uint16_t _height,
            std::uint16_t _depth,
            bool _hasMips,
            texture_format _format,
            std::uint64_t _flags = BGFX_TEXTURE_NONE | BGFX_SAMPLER_NONE,
            const memory_view* _mem = nullptr);
 
    //-----------------------------------------------------------------------------
    //  Name : Texture ()
    //-----------------------------------------------------------------------------
    texture(std::uint16_t _size,
            bool _hasMips,
            std::uint16_t _numLayers,
            texture_format _format,
            std::uint64_t _flags = BGFX_TEXTURE_NONE | BGFX_SAMPLER_NONE,
            const memory_view* _mem = nullptr);
 
    //-----------------------------------------------------------------------------
    //  Name : get_size ()
    //-----------------------------------------------------------------------------
    auto get_size() const -> usize32_t;
 
    //-----------------------------------------------------------------------------
    //  Name : is_render_target ()
    //-----------------------------------------------------------------------------
    auto is_render_target() const -> bool;
 
    //-----------------------------------------------------------------------------
    //  Name : is_gpu_generated ()
    //-----------------------------------------------------------------------------
    auto is_gpu_generated() const -> bool;
 
    //-----------------------------------------------------------------------------
    //  Name : fallback_handle ()
    //-----------------------------------------------------------------------------
    auto fallback_handle() const -> texture_handle;
 
 
    auto get_estimated_gpu_size() const -> std::uint64_t;
 
    texture_info info{};
    std::uint64_t flags = BGFX_TEXTURE_NONE;
 
private:
    void adopt_loaded_eviction(eviction::backing_buffer backing,
                               std::uint64_t estimated_size,
                               std::uint64_t load_flags,
                               std::uint8_t skip,
                               const char* label);
};
 
 
inline auto needs_recreate(const gfx::texture::ptr& tex, const usize32_t& size) -> bool
{
    return !tex || (tex && tex->get_size() != size);
}
 
inline auto needs_recreate(const gfx::texture::ptr& tex, const usize32_t& size, const texture_format& format) -> bool
{
    return !tex || (tex && tex->get_size() != size) || (tex && tex->info.format != format);
}
} // namespace gfx