EvpackStaticPrefab.h

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#pragma once
#include "common/Export.h"
 
 
#include <array>
#include <cstdint>
#include <memory>
#include <vector>
#include "common/ResourceRef.h"
 
namespace eve::asset {
class EvpackResourceReader;
struct EvpackCapabilities;
}  // namespace eve::asset
namespace eve::graphics {
class Graphics;
class IMeshResourceFactory;
class IImageResourceFactory;
}  // namespace eve::graphics
 
namespace eve::asset_graphics {
struct StaticPrefabGpuPart {
    std::array<float, 16> localTransform{};
    std::uint32_t meshId = 0xffffffffu, materialId = 0xffffffffu, flags = 0x7u, lodGroupId = 0xffffffffu;
};
class EVENGINE_API_WORLD EvpackStaticPrefab final {
public:
    ~EvpackStaticPrefab();
    EvpackStaticPrefab(const EvpackStaticPrefab&)            = delete;
    EvpackStaticPrefab& operator=(const EvpackStaticPrefab&) = delete;
    [[nodiscard]] static Result<std::unique_ptr<EvpackStaticPrefab>> load(
        const asset::EvpackResourceReader& reader, graphics::IMeshResourceFactory& meshes,
        graphics::IImageResourceFactory& images, const AssetRef& asset, const asset::EvpackCapabilities& capabilities);
    [[nodiscard]] std::size_t drawCount() const noexcept;
    [[nodiscard]] Result<std::vector<StaticPrefabGpuPart>> prepareGpuDriven(graphics::Graphics& graphics);
    [[nodiscard]] Result<void> draw(graphics::Graphics& graphics, const std::array<float, 16>& transform,
                                    const std::array<float, 16>& cameraView) const;
    [[nodiscard]] Result<void> drawShadow(graphics::Graphics& graphics,
                                          const std::array<float, 16>& transform,
                                          const std::array<float, 16>& lightViewProjection) const;
    [[nodiscard]] Result<void> release();
 
private:
    struct Impl;
    explicit EvpackStaticPrefab(std::unique_ptr<Impl> impl);
    std::unique_ptr<Impl> impl_;
};
}  // namespace eve::asset_graphics