- #ifndef _DEPTH_H_ 
- #define _DEPTH_H_ 
-   
- #include "dr_types.h" 
-   
- extern tDepth_effect gDistance_depth_effects[4]; 
- extern int gSky_on; 
- extern int gDepth_cueing_on; 
- extern tDepth_effect_type gSwap_depth_effect_type; 
- extern br_scalar gSky_height; 
- extern br_scalar gSky_x_multiplier; 
- extern br_scalar gSky_width; 
- extern br_scalar gSky_y_multiplier; 
- extern tU32 gLast_depth_change; 
- extern br_scalar gOld_yon; 
- extern br_pixelmap* gWater_shade_table; 
- extern br_material* gHorizon_material; 
- extern br_model* gRearview_sky_model; 
- extern int gFog_shade_table_power; 
- extern br_actor* gRearview_sky_actor; 
- extern int gAcid_shade_table_power; 
- extern int gWater_shade_table_power; 
- extern br_model* gForward_sky_model; 
- extern br_actor* gForward_sky_actor; 
- extern int gDepth_shade_table_power; 
- extern br_pixelmap* gFog_shade_table; 
- extern int gSwap_depth_effect_start; 
- extern br_pixelmap* gDepth_shade_table; 
- extern tSpecial_volume* gLast_camera_special_volume; 
- extern br_pixelmap* gAcid_shade_table; 
- extern int gSwap_depth_effect_end; 
- extern br_pixelmap* gSwap_sky_texture; 
- extern br_angle gOld_fov; 
- extern br_angle gSky_image_width; 
- extern br_angle gSky_image_height; 
- extern br_angle gSky_image_underground; 
-   
- int Log2(int pNumber); 
-   
- br_scalar CalculateWrappingMultiplier(br_scalar pValue, br_scalar pYon); 
-   
- br_scalar DepthCueingShiftToDistance(int pShift); 
-   
- void FogAccordingToGPSCDE(br_material* pMaterial); 
-   
- void FrobFog(void); 
-   
- void InstantDepthChange(tDepth_effect_type pType, br_pixelmap* pSky_texture, int pStart, int pEnd); 
-   
- br_scalar Tan(br_scalar pAngle); 
-   
- br_scalar EdgeU(br_angle pSky, br_angle pView, br_angle pPerfect); 
-   
- void MungeSkyModel(br_actor* pCamera, br_model* pModel); 
-   
- br_model* CreateHorizonModel(br_actor* pCamera); 
-   
- void LoadDepthTable(char* pName, br_pixelmap** pTable, int* pPower); 
-   
- void InitDepthEffects(void); 
-   
- void DoDepthByShadeTable(br_pixelmap* pRender_buffer, br_pixelmap* pDepth_buffer, br_pixelmap* pShade_table, int pShade_table_power, int pStart, int pEnd); 
-   
- void ExternalSky(br_pixelmap* pRender_buffer, br_pixelmap* pDepth_buffer, br_actor* pCamera, br_matrix34* pCamera_to_world); 
-   
- void DoHorizon(br_pixelmap* pRender_buffer, br_pixelmap* pDepth_buffer, br_actor* pCamera, br_matrix34* pCamera_to_world); 
-   
- void DoDepthCue(br_pixelmap* pRender_buffer, br_pixelmap* pDepth_buffer); 
-   
- void DoFog(br_pixelmap* pRender_buffer, br_pixelmap* pDepth_buffer); 
-   
- void DepthEffect(br_pixelmap* pRender_buffer, br_pixelmap* pDepth_buffer, br_actor* pCamera, br_matrix34* pCamera_to_world); 
-   
- void DepthEffectSky(br_pixelmap* pRender_buffer, br_pixelmap* pDepth_buffer, br_actor* pCamera, br_matrix34* pCamera_to_world); 
-   
- void DoWobbleCamera(br_actor* pCamera); 
-   
- void DoDrugWobbleCamera(br_actor* pCamera); 
-   
- void DoSpecialCameraEffect(br_actor* pCamera, br_matrix34* pCamera_to_world); 
-   
- void LessDepthFactor(void); 
-   
- void MoreDepthFactor(void); 
-   
- void LessDepthFactor2(void); 
-   
- void MoreDepthFactor2(void); 
-   
- void AssertYons(void); 
-   
- void IncreaseYon(void); 
-   
- void DecreaseYon(void); 
-   
- void SetYon(br_scalar pYon); 
-   
- br_scalar GetYon(void); 
-   
- void IncreaseAngle(void); 
-   
- void DecreaseAngle(void); 
-   
- void ToggleDepthMode(void); 
-   
- int GetSkyTextureOn(void); 
-   
- void SetSkyTextureOn(int pOn); 
-   
- void ToggleSkyQuietly(void); 
-   
- void ToggleSky(void); 
-   
- int GetDepthCueingOn(void); 
-   
- void SetDepthCueingOn(int pOn); 
-   
- void ToggleDepthCueingQuietly(void); 
-   
- void ToggleDepthCueing(void); 
-   
- void ChangeDepthEffect(void); 
-   
- void MungeForwardSky(void); 
-   
- void MungeRearviewSky(void); 
-   
- #endif 
-