$#include "Graphics/RenderPath.h"

enum RenderCommandType
{
    CMD_NONE = 0,
    CMD_CLEAR,
    CMD_SCENEPASS,
    CMD_QUAD,
    CMD_FORWARDLIGHTS,
    CMD_LIGHTVOLUMES,
    CMD_RENDERUI,
    CMD_SENDEVENT
};

enum RenderCommandSortMode
{
    SORT_FRONTTOBACK = 0,
    SORT_BACKTOFRONT
};

enum RenderTargetSizeMode
{
    SIZE_ABSOLUTE = 0,
    SIZE_VIEWPORTDIVISOR,
    SIZE_VIEWPORTMULTIPLIER
};

struct RenderTargetInfo
{
    RenderTargetInfo();

    void Load(const XMLElement& element);

    String name_ @ name;
    String tag_ @ tag;
    unsigned format_ @ format;
    Vector2 size_ @ size;
    RenderTargetSizeMode sizeMode_ @ sizeMode;
    int multiSample_ @ multiSample;
    bool autoResolve_ @ autoResolve;
    bool enabled_ @ enabled;
    bool cubemap_ @ cubemap;
    bool filtered_ @ filtered;
    bool sRGB_ @ sRGB;
    bool persistent_ @ persistent;
};

struct RenderPathCommand
{
    RenderPathCommand();
    
    void Load(const XMLElement& element);
    void SetTextureName(TextureUnit unit, const String name);
    void SetShaderParameter(const String name, const Variant& value);
    void RemoveShaderParameter(const String name);
    void SetNumOutputs(unsigned num);
    void SetOutput(unsigned index, const String name, CubeMapFace face);
    void SetOutputName(unsigned index, const String name);
    void SetOutputFace(unsigned index, CubeMapFace face);
    void SetDepthStencilName(const String name);

    const String GetTextureName(TextureUnit unit) const;
    const Variant& GetShaderParameter(const String name) const;
    unsigned GetNumOutputs() const;
    const String GetOutputName(unsigned index) const;
    CubeMapFace GetOutputFace(unsigned index) const;
    const String GetDepthStencilName() const;

    String tag_ @ tag;
    RenderCommandType type_ @ type;
    RenderCommandSortMode sortMode_ @ sortMode;
    String pass_ @ pass;
    String metadata_ @ metadata;
    String vertexShaderName_ @ vertexShaderName;
    String pixelShaderName_ @ pixelShaderName;
    String vertexShaderDefines_ @ vertexShaderDefines;
    String pixelShaderDefines_ @ pixelShaderDefines;
    unsigned clearFlags_ @ clearFlags;
    Color clearColor_ @ clearColor;
    float clearDepth_ @ clearDepth;
    unsigned clearStencil_ @ clearStencil;
    BlendMode blendMode_ @ blendMode;
    bool enabled_ @ enabled;
    bool useFogColor_ @ useFogColor;
    bool markToStencil_ @ markToStencil;
    bool useLitBase_ @ useLitBase;
    bool vertexLights_ @ vertexLights;
    String eventName_ @ eventName;
};

class RenderPath
{
    // SharedPtr<RenderPath> Clone();
    tolua_outside RenderPath* RenderPathClone @ Clone();

    bool Load(XMLFile* file);
    bool Append(XMLFile* file);

    void SetEnabled(const String tag, bool active);
    void ToggleEnabled(const String tag);
    void SetRenderTarget(unsigned index, const RenderTargetInfo& info);
    void AddRenderTarget(const RenderTargetInfo& info);

    void RemoveRenderTarget(const String name);
    void RemoveRenderTarget(unsigned index);
    void RemoveRenderTargets(const String tag);
    
    void SetCommand(unsigned index, const RenderPathCommand& command);
    void AddCommand(const RenderPathCommand& command);
    void InsertCommand(unsigned index, const RenderPathCommand& command);
    void RemoveCommand(unsigned index);

    void RemoveCommands(const String tag);
    void SetShaderParameter(const String name, const Variant& value);

    unsigned GetNumRenderTargets() const;
    unsigned GetNumCommands() const;
    RenderPathCommand* GetCommand(unsigned index); 
    const Variant& GetShaderParameter(const String name) const;
};

${
static RenderPath* RenderPathClone(RenderPath* renderPath)
{
    if (!renderPath)
        return 0;

    return renderPath->Clone().Detach();
}
$}