/*
===========================================================================
Copyright (C) 1999 - 2005, Id Software, Inc.
Copyright (C) 2000 - 2013, Raven Software, Inc.
Copyright (C) 2001 - 2013, Activision, Inc.
Copyright (C) 2005 - 2015, ioquake3 contributors
Copyright (C) 2013 - 2015, OpenJK contributors

This file is part of the OpenJK source code.

OpenJK is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
===========================================================================
*/

#pragma once

#include "tr_types.h"
#include "../qcommon/qcommon.h"

#include "../ghoul2/G2.h"
#include "../ghoul2/ghoul2_gore.h"

#define	REF_API_VERSION		18

typedef struct {
	void				(QDECL *Printf)						( int printLevel, const char *fmt, ...) __attribute__ ((format (printf, 2, 3)));
	void				(QDECL *Error)						( int errorLevel, const char *fmt, ...) NORETURN_PTR __attribute__ ((format (printf, 2, 3)));

	// milliseconds should only be used for profiling, never for anything game related. Get time from the refdef
	int					(*Milliseconds)						( void );

	void				(*Hunk_ClearToMark)					( void );
	void*				(*Malloc)							( int iSize, memtag_t eTag, qboolean zeroIt, int iAlign );
	int					(*Z_Free)							( void *memory );
	int					(*Z_MemSize)						( memtag_t eTag );
	void				(*Z_MorphMallocTag)					( void *pvBuffer, memtag_t eDesiredTag );


	void				(*Cmd_ExecuteString)				( const char *text );
	int					(*Cmd_Argc)							( void );
	char *				(*Cmd_Argv)							( int arg );
	void				(*Cmd_ArgsBuffer)					( char *buffer, int bufferLength );
	void				(*Cmd_AddCommand)					( const char *cmd_name, xcommand_t function );
	void				(*Cmd_RemoveCommand)				( const char *cmd_name );
	void				(*Cvar_Set)							( const char *var_name, const char *value );
	cvar_t *			(*Cvar_Get)							( const char *var_name, const char *value, int flags );
	void				(*Cvar_SetValue)					( const char *name, float value );
	void				(*Cvar_CheckRange)					( cvar_t *cv, float minVal, float maxVal, qboolean shouldBeIntegral );
	void				(*Cvar_VariableStringBuffer)		( const char *var_name, char *buffer, int bufsize );
	char *				(*Cvar_VariableString)				( const char *var_name );
	float				(*Cvar_VariableValue)				( const char *var_name );
	int					(*Cvar_VariableIntegerValue)		( const char *var_name );


	qboolean			(*LowPhysicalMemory)				( void );
	const char*			(*SE_GetString)						( const char *reference );


	void				(*FS_FreeFile)						( void *buffer );
	void				(*FS_FreeFileList)					( char **fileList );
	int					(*FS_Read)							( void *buffer, int len, fileHandle_t f );
	long					(*FS_ReadFile)						( const char *qpath, void **buffer );
	void				(*FS_FCloseFile)					( fileHandle_t f );
	long					(*FS_FOpenFileRead)					( const char *qpath, fileHandle_t *file, qboolean uniqueFILE );
	fileHandle_t		(*FS_FOpenFileWrite)				( const char *qpath, qboolean safe );
	int					(*FS_FOpenFileByMode)				( const char *qpath, fileHandle_t *f, fsMode_t mode );
	qboolean			(*FS_FileExists)					( const char *file );
	int					(*FS_FileIsInPAK)					( const char *filename );
	char **				(*FS_ListFiles)						( const char *directory, const char *extension, int *numfiles );
	int					(*FS_Write)							( const void *buffer, int len, fileHandle_t f );
	void				(*FS_WriteFile)						( const char *qpath, const void *buffer, int size );

	void				(*CM_DrawDebugSurface)				( void (*drawPoly)( int color, int numPoints, float *points ) );
	bool				(*CM_CullWorldBox)					( const cplane_t *frustrum, const vec3pair_t bounds );
	byte*				(*CM_ClusterPVS)					( int cluster );
	int					(*CM_PointContents)					( const vec3_t p, clipHandle_t model );
	void				(*S_RestartMusic)					( void );
	qboolean			(*SND_RegisterAudio_LevelLoadEnd)	( qboolean bDeleteEverythingNotUsedThisLevel );

	e_status			(*CIN_RunCinematic)					( int handle );
	int					(*CIN_PlayCinematic)				( const char *arg0, int xpos, int ypos, int width, int height,
															int bits, const char *psAudioFile /* = NULL */ );
	void				(*CIN_UploadCinematic)				( int handle );

	// window handling
	window_t		(*WIN_Init)                         ( const windowDesc_t *desc, glconfig_t *glConfig );
	void			(*WIN_SetGamma)						( glconfig_t *glConfig, byte red[256], byte green[256], byte blue[256] );
	void			(*WIN_Present)						( window_t *window );
	void            (*WIN_Shutdown)                     ( void );

	// OpenGL-specific
	void *			(*GL_GetProcAddress)				( const char *name );
	qboolean		(*GL_ExtensionSupported)			( const char *extension );

	CMiniHeap *			(*GetG2VertSpaceServer)				( void );

	// Persistent data store
	bool			(*PD_Store)							( const char *name, const void *data, size_t size );
	const void *	(*PD_Load)							( const char *name, size_t *size );

	// ============= NOT IN MP BEYOND THIS POINT
	void				(*SV_Trace)							( trace_t *results, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end,
															const int passEntityNum, const int contentmask,
															const EG2_Collision eG2TraceType, const int useLod );

	ojk::ISavedGame* saved_game;

	int					(*SV_PointContents)					( const vec3_t p, clipHandle_t model );

	qboolean			(*CM_DeleteCachedMap)				( qboolean bGuaranteedOkToDelete );	// NOT IN MP

	qboolean			(*CL_IsRunningInGameCinematic)		( void );

	void*				(*gpvCachedMapDiskImage)			( void );
	char*				(*gsCachedMapDiskImage)				( void );
	qboolean			*(*gbUsingCachedMapDataRightNow)	( void );
	qboolean			*(*gbAlreadyDoingLoad)				( void );
	int					(*com_frameTime)					( void );

	//JKVR Functions
	void 				(*JKVR_prepareEyeBuffer)			(int eye );
	bool 				(*JKVR_useScreenLayer)				( void );

} refimport_t;

extern refimport_t ri;

//
// these are the functions exported by the refresh module
//
typedef struct {
	// called before the library is unloaded
	// if the system is just reconfiguring, pass destroyWindow = qfalse,
	// which will keep the screen from flashing to the desktop.
	void	(*Shutdown)( qboolean destroyWindow, qboolean restarting );

	// All data that will be used in a level should be
	// registered before rendering any frames to prevent disk hits,
	// but they can still be registered at a later time
	// if necessary.
	//
	// BeginRegistration makes any existing media pointers invalid
	// and returns the current gl configuration, including screen width
	// and height, which can be used by the client to intelligently
	// size display elements
	void	(*BeginRegistration)( glconfig_t *config, intptr_t pVrClientInfo );
	qhandle_t (*RegisterModel)( const char *name );
	qhandle_t (*RegisterSkin)( const char *name );
	int		  (*GetAnimationCFG)(const char *psCFGFilename, char *psDest, int iDestSize);
	qhandle_t (*RegisterShader)( const char *name );
	qhandle_t (*RegisterShaderNoMip)( const char *name );
	void	(*LoadWorld)( const char *name );
	void	(*R_LoadImage)( const char *name, byte **pic, int *width, int *height );

	// these two functions added to help with the new model alloc scheme...
	//
	void	(*RegisterMedia_LevelLoadBegin)(const char *psMapName, ForceReload_e eForceReload, qboolean bAllowScreenDissolve);
	void	(*RegisterMedia_LevelLoadEnd)(void);
	int		(*RegisterMedia_GetLevel)(void);
	qboolean	(*RegisterModels_LevelLoadEnd)(qboolean bDeleteEverythingNotUsedThisLevel );
	qboolean	(*RegisterImages_LevelLoadEnd)(void);

	// the vis data is a large enough block of data that we go to the trouble
	// of sharing it with the clipmodel subsystem
	void	(*SetWorldVisData)( const byte *vis );

	// EndRegistration will draw a tiny polygon with each texture, forcing
	// them to be loaded into card memory
	void	(*EndRegistration)( void );

	// a scene is built up by calls to R_ClearScene and the various R_Add functions.
	// Nothing is drawn until R_RenderScene is called.
	void	(*ClearScene)( void );
	void	(*AddRefEntityToScene)( const refEntity_t *re );
	void	(*AddPolyToScene)( qhandle_t hShader , int numVerts, const polyVert_t *verts );
	void	(*AddLightToScene)( const vec3_t org, float intensity, float r, float g, float b );
	void	(*RenderScene)( const refdef_t *fd );
	qboolean(*GetLighting)( const vec3_t org, vec3_t ambientLight, vec3_t directedLight, vec3_t lightDir);

	void	(*SetColor)( const float *rgba );	// NULL = 1,1,1,1
	void	(*DrawStretchPic) ( float x, float y, float w, float h,
		float s1, float t1, float s2, float t2, qhandle_t hShader );	// 0 = white
	void	(*DrawRotatePic) ( float x, float y, float w, float h,
		float s1, float t1, float s2, float t2, float a1, qhandle_t hShader );	// 0 = white
	void	(*DrawRotatePic2) ( float x, float y, float w, float h,
		float s1, float t1, float s2, float t2, float a1, qhandle_t hShader );	// 0 = white
	void	(*LAGoggles)(void);
	void	(*Scissor) ( float x, float y, float w, float h);	// 0 = white

	// Draw images for cinematic rendering, pass as 32 bit rgba
	void	(*DrawStretchRaw) (int x, int y, int w, int h, int cols, int rows, const byte *data, int client, qboolean dirty);
	void	(*UploadCinematic) (int cols, int rows, const byte *data, int client, qboolean dirty);

	void	(*BeginFrame)( stereoFrame_t stereoFrame );

	// if the pointers are not NULL, timing info will be returned
	void	(*EndFrame)( int *frontEndMsec, int *backEndMsec );

	void ( *SubmitStereoFrame )( );

	qboolean (*ProcessDissolve)(void);
	qboolean (*InitDissolve)(qboolean bForceCircularExtroWipe);


	// for use with save-games mainly...
	void	(*GetScreenShot)(byte *data, int w, int h);

#ifdef JK2_MODE
	size_t	(*SaveJPGToBuffer)(byte *buffer, size_t bufSize, int quality, int image_width, int image_height, byte *image_buffer, int padding, bool flip_vertical );
	void	(*LoadJPGFromBuffer)( byte *inputBuffer, size_t len, byte **pic, int *width, int *height );
#endif

	// this is so you can get access to raw pixels from a graphics format (TGA/JPG/BMP etc),
	//	currently only the save game uses it (to make raw shots for the autosaves)
	//
	byte*	(*TempRawImage_ReadFromFile)(const char *psLocalFilename, int *piWidth, int *piHeight, byte *pbReSampleBuffer, qboolean qbVertFlip);
	void	(*TempRawImage_CleanUp)();

	//misc stuff
	int		(*MarkFragments)( int numPoints, const vec3_t *points, const vec3_t projection,
				   int maxPoints, vec3_t pointBuffer, int maxFragments, markFragment_t *fragmentBuffer );

	//model stuff
	void	(*LerpTag)( orientation_t *tag,  qhandle_t model, int startFrame, int endFrame,
					 float frac, const char *tagName );
	void	(*ModelBounds)( qhandle_t model, vec3_t mins, vec3_t maxs );

	void	(*GetLightStyle)(int style, color4ub_t color);
	void	(*SetLightStyle)(int style, int color);

	void	(*GetBModelVerts)( int bmodelIndex, vec3_t *vec, vec3_t normal );
	void	(*WorldEffectCommand)(const char *command);
	void	(*GetModelBounds)(refEntity_t *refEnt, vec3_t bounds1, vec3_t bounds2);

	int		(*RegisterFont)(const char *name);

	int		(*Font_HeightPixels)(const int index, const float scale);
	int		(*Font_StrLenPixels)(const char *s, const int index, const float scale);
	void	(*Font_DrawString)(int x, int y, const char *s, const float *rgba, const int iFontHandle, int iMaxPixelWidth, const float scale);
	int		(*Font_StrLenChars) (const char *s);
	qboolean (*Language_IsAsian) (void);
	qboolean (*Language_UsesSpaces) (void);
	unsigned int (*AnyLanguage_ReadCharFromString)( char *psText, int * piAdvanceCount, qboolean *pbIsTrailingPunctuation /* = NULL */);
	unsigned int (*AnyLanguage_ReadCharFromString2)( char **psText, qboolean *pbIsTrailingPunctuation /* = NULL */);

	// Misc
	void	(*R_InitWorldEffects)(void);
	void	(*R_ClearStuffToStopGhoul2CrashingThings)(void);
	qboolean (*R_inPVS)(vec3_t p1, vec3_t p2);

	void	(*SVModelInit)(void);

	// Distortion effects
	float*		(*tr_distortionAlpha)( void );
	float*		(*tr_distortionStretch)( void );
	qboolean*	(*tr_distortionPrePost)( void );
	qboolean*	(*tr_distortionNegate)( void );

	// Weather effects
	bool	(*GetWindVector)( vec3_t windVector, vec3_t atPoint );
	bool	(*GetWindGusting)( vec3_t atpoint );
	bool	(*IsOutside)( vec3_t pos );
	float	(*IsOutsideCausingPain)( vec3_t pos );
	float	(*GetChanceOfSaberFizz)( void );
	bool	(*IsShaking)( vec3_t pos );
	void	(*AddWeatherZone)( vec3_t mins, vec3_t maxs );
	bool	(*SetTempGlobalFogColor)( vec3_t color );

	void	(*SetRangedFog)(float dist);

	// GHOUL 2
	IGhoul2InfoArray &(*TheGhoul2InfoArray)(void);

	// GHOUL 2 API
	int			(*G2API_AddBolt)(CGhoul2Info *ghlInfo, const char *boneName);
	int			(*G2API_AddBoltSurfNum)(CGhoul2Info *ghlInfo, const int surfIndex);
	int			(*G2API_AddSurface)(CGhoul2Info *ghlInfo, int surfaceNumber, int polyNumber,
					float BarycentricI, float BarycentricJ, int lod);
	void		(*G2API_AnimateG2Models)(CGhoul2Info_v &ghoul2, int AcurrentTime, CRagDollUpdateParams *params);
	qboolean	(*G2API_AttachEnt)(int *boltInfo, CGhoul2Info *ghlInfoTo, int toBoltIndex, int entNum, int toModelNum);
	qboolean	(*G2API_AttachG2Model)(CGhoul2Info *ghlInfo, CGhoul2Info *ghlInfoTo, int toBoltIndex, int toModel);
	void		(*G2API_CollisionDetect)(CCollisionRecord *collRecMap, CGhoul2Info_v &ghoul2, const vec3_t angles,
					const vec3_t position, int AframeNumber, int entNum, vec3_t rayStart, vec3_t rayEnd, vec3_t scale,
					CMiniHeap *, EG2_Collision eG2TraceType, int useLod, float fRadius);
	void		(*G2API_CleanGhoul2Models)(CGhoul2Info_v &ghoul2);
	void		(*G2API_CopyGhoul2Instance)(CGhoul2Info_v &ghoul2From, CGhoul2Info_v &ghoul2To, int modelIndex);
	void		(*G2API_DetachEnt)(int *boltInfo);
	qboolean	(*G2API_DetachG2Model)(CGhoul2Info *ghlInfo);
	qboolean	(*G2API_GetAnimFileName)(CGhoul2Info *ghlInfo, char **filename);
	char*		(*G2API_GetAnimFileNameIndex)(qhandle_t modelIndex);
	char*		(*G2API_GetAnimFileInternalNameIndex)(qhandle_t modelIndex);
	int			(*G2API_GetAnimIndex)(CGhoul2Info *ghlInfo);
	qboolean	(*G2API_GetAnimRange)(CGhoul2Info *ghlInfo, const char *boneName, int *startFrame, int *endFrame);
	qboolean	(*G2API_GetAnimRangeIndex)(CGhoul2Info *ghlInfo, const int boneIndex, int *startFrame, int *endFrame);
	qboolean	(*G2API_GetBoneAnim)(CGhoul2Info *ghlInfo, const char *boneName, const int AcurrentTime,
					float *currentFrame, int *startFrame, int *endFrame, int *flags, float *animSpeed, int *);
	qboolean	(*G2API_GetBoneAnimIndex)(CGhoul2Info *ghlInfo, const int iBoneIndex, const int AcurrentTime,
					float *currentFrame, int *startFrame, int *endFrame, int *flags, float *animSpeed, int *);
	int			(*G2API_GetBoneIndex)(CGhoul2Info *ghlInfo, const char *boneName, qboolean bAddIfNotFound);
	qboolean	(*G2API_GetBoltMatrix)(CGhoul2Info_v &ghoul2, const int modelIndex,  const int boltIndex, mdxaBone_t *matrix,
					const vec3_t angles, const vec3_t position, const int AframeNum, qhandle_t *modelList, const vec3_t scale);
	int			(*G2API_GetGhoul2ModelFlags)(CGhoul2Info *ghlInfo);
	char*		(*G2API_GetGLAName)(CGhoul2Info *ghlInfo);
	int			(*G2API_GetParentSurface)(CGhoul2Info *ghlInfo, const int index);
	qboolean	(*G2API_GetRagBonePos)(CGhoul2Info_v &ghoul2, const char *boneName, vec3_t pos, vec3_t entAngles,
					vec3_t entPos, vec3_t entScale);
	int			(*G2API_GetSurfaceIndex)(CGhoul2Info *ghlInfo, const char *surfaceName);
	char*		(*G2API_GetSurfaceName)(CGhoul2Info *ghlInfo, int surfNumber);
	int			(*G2API_GetSurfaceRenderStatus)(CGhoul2Info *ghlInfo, const char *surfaceName);
	int			(*G2API_GetTime)(int argTime);
	void		(*G2API_GiveMeVectorFromMatrix)(mdxaBone_t &boltMatrix, Eorientations flags, vec3_t &vec);
	qboolean	(*G2API_HaveWeGhoul2Models)(CGhoul2Info_v &ghoul2);
	qboolean	(*G2API_IKMove)(CGhoul2Info_v &ghoul2, int time, sharedIKMoveParams_t *params);
	int			(*G2API_InitGhoul2Model)(CGhoul2Info_v &ghoul2, const char *fileName, int modelIndex,
					qhandle_t customSkin, qhandle_t customShader, int modelFlags, int lodBias);
	qboolean	(*G2API_IsPaused)(CGhoul2Info *ghlInfo, const char *boneName);
	void		(*G2API_ListBones)(CGhoul2Info *ghlInfo, int frame);
	void		(*G2API_ListSurfaces)(CGhoul2Info *ghlInfo);
	void		(*G2API_LoadGhoul2Models)(CGhoul2Info_v &ghoul2, char *buffer);
	void		(*G2API_LoadSaveCodeDestructGhoul2Info)(CGhoul2Info_v &ghoul2);
	qboolean	(*G2API_PauseBoneAnim)(CGhoul2Info *ghlInfo, const char *boneName, const int AcurrentTime);
	qboolean	(*G2API_PauseBoneAnimIndex)(CGhoul2Info *ghlInfo, const int boneIndex, const int AcurrentTime);
	qhandle_t	(*G2API_PrecacheGhoul2Model)(const char *fileName);
	qboolean	(*G2API_RagEffectorGoal)(CGhoul2Info_v &ghoul2, const char *boneName, vec3_t pos);
	qboolean	(*G2API_RagEffectorKick)(CGhoul2Info_v &ghoul2, const char *boneName, vec3_t velocity);
	qboolean	(*G2API_RagForceSolve)(CGhoul2Info_v &ghoul2, qboolean force);
	qboolean	(*G2API_RagPCJConstraint)(CGhoul2Info_v &ghoul2, const char *boneName, vec3_t min, vec3_t max);
	qboolean	(*G2API_RagPCJGradientSpeed)(CGhoul2Info_v &ghoul2, const char *boneName, const float speed);
	qboolean	(*G2API_RemoveBolt)(CGhoul2Info *ghlInfo, const int index);
	qboolean	(*G2API_RemoveBone)(CGhoul2Info *ghlInfo, const char *boneName);
	qboolean	(*G2API_RemoveGhoul2Model)(CGhoul2Info_v &ghlInfo, const int modelIndex);
	qboolean	(*G2API_RemoveSurface)(CGhoul2Info *ghlInfo, const int index);
	void		(*G2API_SaveGhoul2Models)(CGhoul2Info_v &ghoul2);
	qboolean	(*G2API_SetAnimIndex)(CGhoul2Info *ghlInfo, const int index);
	qboolean	(*G2API_SetBoneAnim)(CGhoul2Info *ghlInfo, const char *boneName, const int startFrame, const int endFrame,
					const int flags, const float animSpeed, const int AcurrentTime, const float setFrame, const int blendTime);
	qboolean	(*G2API_SetBoneAnimIndex)(CGhoul2Info *ghlInfo, const int index, const int startFrame, const int endFrame,
					const int flags, const float animSpeed, const int AcurrentTime, const float setFrame, const int blendTime);
	qboolean	(*G2API_SetBoneAngles)(CGhoul2Info *ghlInfo, const char *boneName, const vec3_t angles, const int flags,
					const Eorientations up, const Eorientations left, const Eorientations forward, qhandle_t *modelList,
					int blendTime, int AcurrentTime);
	qboolean	(*G2API_SetBoneAnglesIndex)(CGhoul2Info *ghlInfo, const int index, const vec3_t angles, const int flags,
					const Eorientations yaw, const Eorientations pitch, const Eorientations roll, qhandle_t *modelList,
					int blendTime, int AcurrentTime);
	qboolean	(*G2API_SetBoneAnglesMatrix)(CGhoul2Info *ghlInfo, const char *boneName, const mdxaBone_t &matrix,
					const int flags, qhandle_t *modelList, int blendTime, int AcurrentTime);
	qboolean	(*G2API_SetBoneAnglesMatrixIndex)(CGhoul2Info *ghlInfo, const int index, const mdxaBone_t &matrix,
					const int flags, qhandle_t *modelList, int blandeTime, int AcurrentTime);
	qboolean	(*G2API_SetBoneIKState)(CGhoul2Info_v &ghoul2, int time, const char *boneName, int ikState,
					sharedSetBoneIKStateParams_t *params);
	qboolean	(*G2API_SetGhoul2ModelFlags)(CGhoul2Info *ghlInfo, const int flags);
	void		(*G2API_SetGhoul2ModelIndexes)(CGhoul2Info_v &ghoul2, qhandle_t *modelList, qhandle_t *skinList);
	qboolean	(*G2API_SetLodBias)(CGhoul2Info *ghlInfo, int lodBias);
	qboolean	(*G2API_SetNewOrigin)(CGhoul2Info *ghlInfo, const int boltIndex);
	void		(*G2API_SetRagDoll)(CGhoul2Info_v &ghoul2, CRagDollParams *parms);
	qboolean	(*G2API_SetRootSurface)(CGhoul2Info_v &ghlInfo, const int modelIndex, const char *surfaceName);
	qboolean	(*G2API_SetShader)(CGhoul2Info *ghlInfo, qhandle_t customShader);
	qboolean	(*G2API_SetSkin)(CGhoul2Info *ghlInfo, qhandle_t customSkin, qhandle_t renderSkin);
	qboolean	(*G2API_SetSurfaceOnOff)(CGhoul2Info *ghlInfo, const char *surfaceName, const int flags);
	void		(*G2API_SetTime)(int currentTime, int clock);
	qboolean	(*G2API_StopBoneAnim)(CGhoul2Info *ghlInfo, const char *boneName);
	qboolean	(*G2API_StopBoneAnimIndex)(CGhoul2Info *ghlInfo, const int index);
	qboolean	(*G2API_StopBoneAngles)(CGhoul2Info *ghlInfo, const char *boneName);
	qboolean	(*G2API_StopBoneAnglesIndex)(CGhoul2Info *ghlInfo, const int index);

#ifdef _G2_GORE
	void		(*G2API_AddSkinGore)(CGhoul2Info_v &ghoul2, SSkinGoreData &gore);
	void		(*G2API_ClearSkinGore)(CGhoul2Info_v &ghoul2);
#endif

	// Performance analysis (perform anal)
	void		(*G2Time_ResetTimers)(void);
	void		(*G2Time_ReportTimers)(void);
} refexport_t;

// this is the only function actually exported at the linker level
// If the module can't init to a valid rendering state, NULL will be
// returned.

typedef	refexport_t* (QDECL *GetRefAPI_t) (int apiVersion, refimport_t *rimp);