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/****************************************************************************
* render.h
*
* This module contains all defines, typedefs, and prototypes for RENDER.CPP.
*
* from Persistence of Vision(tm) Ray Tracer version 3.6.
* Copyright 1991-2003 Persistence of Vision Team
* Copyright 2003-2004 Persistence of Vision Raytracer Pty. Ltd.
*---------------------------------------------------------------------------
* NOTICE: This source code file is provided so that users may experiment
* with enhancements to POV-Ray and to port the software to platforms other
* than those supported by the POV-Ray developers. There are strict rules
* regarding how you are permitted to use this file. These rules are contained
* in the distribution and derivative versions licenses which should have been
* provided with this file.
*
* These licences may be found online, linked from the end-user license
* agreement that is located at http://www.povray.org/povlegal.html
*---------------------------------------------------------------------------
* This program is based on the popular DKB raytracer version 2.12.
* DKBTrace was originally written by David K. Buck.
* DKBTrace Ver 2.0-2.12 were written by David K. Buck & Aaron A. Collins.
*---------------------------------------------------------------------------
* $File: //depot/povray/3.6-release/source/render.h $
* $Revision: #2 $
* $Change: 2939 $
* $DateTime: 2004/07/04 13:43:26 $
* $Author: root $
* $Log$
*****************************************************************************/
#ifndef RENDER_H
#define RENDER_H
BEGIN_POV_NAMESPACE
/*****************************************************************************
* Global preprocessor defines
******************************************************************************/
/*****************************************************************************
* Global typedefs
******************************************************************************/
typedef enum
{
CSV,
SYS,
PPM,
TARGA,
PNG,
NONE
} Histogram_Types;
/*****************************************************************************
* Global variables
******************************************************************************/
extern COLOUR *Previous_Line, *Current_Line, *Temp_Line;
extern char *Previous_Line_Antialiased_Flags, *Current_Line_Antialiased_Flags;
extern unsigned char *Red_Row_255, *Green_Row_255, *Blue_Row_255, *Alpha_Row_255;
extern long SuperSampleCount, RadiosityCount, MosaicPreviewSize;
extern DBL maxclr;
extern int Current_Line_Number;
extern int Trace_Level, Max_Trace_Level, Highest_Trace_Level;
extern bool Had_Max_Trace_Level;
extern DBL Total_Depth;
/* Object-Ray Options [ENB 9/97] */
extern bool In_Reflection_Ray;
extern bool In_Shadow_Ray;
extern DBL ADC_Bailout;
extern unsigned long *histogram_grid ;
extern unsigned long max_histogram_value ;
extern Image_File_Class *Histogram_File ;
/*****************************************************************************
* Global functions
******************************************************************************/
void Read_Rendered_Part (char *New_Fname);
void Start_Tracing_Radiosity_Preview (int StartPixelSize, int EndPixelSize);
void Start_Tracing_Mosaic_Preview (int StartPixelSize, int EndPixelSize);
void Start_Adaptive_Tracing (void);
void Start_Non_Adaptive_Tracing (void);
void Initialize_Renderer (void);
void Terminate_Renderer (void);
DBL Trace (RAY *Ray, COLOUR Colour, DBL Weight);
void Check_User_Abort (int Do_Stats);
void write_histogram (char *filename);
void destroy_histogram (void);
void initialize_ray_container_state(RAY *Ray, int Compute);
END_POV_NAMESPACE
#endif
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