ModelRenderPass.h

#pragma once

namespace ParaEngine
{
    class CParaXModel;
    class CParameterBlock;
    struct SceneState;

    struct ModelRenderPass 
    {
    public:
        ModelRenderPass();
    public:
        uint16 indexStart, indexCount;
        union {
            struct {
                uint16 vertexStart, vertexEnd;
            };
            int32 m_nIndexStart;
        };

        //TextureID texture, texture2;
        int32 tex;
        union{
            float m_fStripLength;
            float m_fCategoryID;
            float m_fReserved0;
        };
        
        
        int16 texanim, color, opacity, blendmode;
        int32 order;
        int32 geoset;

        // TODO: bit align to DWORD
        bool usetex2 : 1, useenvmap : 1, cull : 1, trans : 1, unlit : 1, nozwrite : 1, swrap : 1, twrap : 1, force_local_tranparency : 1, skinningAni : 1, is_rigid_body : 1, disable_physics : 1, force_physics : 1, has_category_id : 1;
        DWORD: 0;// Force alignment to next boundary.

        bool init(CParaXModel *m, SceneState* pSceneState);
        void deinit();

        bool init_FX(CParaXModel *m, SceneState* pSceneState, CParameterBlock* pMaterialParams = NULL);
        void deinit_FX(SceneState* pSceneState, CParameterBlock* pMaterialParams = NULL);

        bool init_bmax_FX(CParaXModel *m, SceneState* pSceneState, CParameterBlock* pMaterialParams = NULL);
        void deinit_bmax_FX(SceneState* pSceneState, CParameterBlock* pMaterialParams = NULL);

        bool IsAlphaBlended();

        int GetPhysicsGroup();

        bool hasPhysics();

        bool operator< (const ModelRenderPass &m) const
        {
            //return !trans;
            if (order < m.order) return true;
            else if (order > m.order) return false;
            else return blendmode == m.blendmode ? (m_fReserved0 < m.m_fReserved0) : blendmode < m.blendmode;
        }

        inline bool operator == (const ModelRenderPass &m) const
        {
            return tex == m.tex && blendmode == m.blendmode && color == m.color;
        }

        void SetStartIndex(int32 nIndex);

        int32 GetStartIndex();

        int32 GetVertexStart(CParaXModel *m);
    
        int32 GetCategoryId();
        void SetCategoryId(int32 nCategoryID);
    };
}