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// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#pragma once

#include <array>
#include <bitset>
#include <optional>
#include <vector>

#include "common/common_types.h"

namespace Shader {

enum class AttributeType : u8 {
    Float,
    SignedInt,
    UnsignedInt,
    Disabled,
};

enum class InputTopology {
    Points,
    Lines,
    LinesAdjacency,
    Triangles,
    TrianglesAdjacency,
};

enum class CompareFunction {
    Never,
    Less,
    Equal,
    LessThanEqual,
    Greater,
    NotEqual,
    GreaterThanEqual,
    Always,
};

enum class TessPrimitive {
    Isolines,
    Triangles,
    Quads,
};

enum class TessSpacing {
    Equal,
    FractionalOdd,
    FractionalEven,
};

struct TransformFeedbackVarying {
    u32 buffer{};
    u32 stride{};
    u32 offset{};
    u32 components{};
};

struct RuntimeInfo {
    std::array<AttributeType, 32> generic_input_types{};
    std::bitset<32> previous_stage_stores_generic{};

    bool convert_depth_mode{};
    bool force_early_z{};

    TessPrimitive tess_primitive{};
    TessSpacing tess_spacing{};
    bool tess_clockwise{};

    InputTopology input_topology{};

    std::optional<float> fixed_state_point_size;
    std::optional<CompareFunction> alpha_test_func;
    float alpha_test_reference{};

    /// Static Y negate value
    bool y_negate{};
    /// Use storage buffers instead of global pointers on GLASM
    bool glasm_use_storage_buffers{};

    /// Transform feedback state for each varying
    std::vector<TransformFeedbackVarying> xfb_varyings;
};

} // namespace Shader