Ton Roosendaal
5190faf513
(1 lamp, shadow). The 'coherence' check gets reset now for each new pixel rendered, which remains efficient for oversampling. - small cleanups in code, prototype added, less globals.
148 lines
4.7 KiB
C++
148 lines
4.7 KiB
C++
/*
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* rendercore_ext.h
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*
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* $Id$
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*
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* ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version. The Blender
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* Foundation also sells licenses for use in proprietary software under
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* the Blender License. See http://www.blender.org/BL/ for information
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* about this.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL/BL DUAL LICENSE BLOCK *****
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*/
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#ifndef RENDERCORE_H
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#define RENDERCORE_H
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#include "render_types.h"
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/* vector defines */
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#define VECADD(dest, v1, v2) dest[0]= v1[0]+v2[0];dest[1]= v1[1]+v2[1];dest[2]= v1[2]+v2[2]
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#define VECSUB(dest, v1, v2) dest[0]= v1[0]-v2[0];dest[1]= v1[1]-v2[1];dest[2]= v1[2]-v2[2]
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#define CROSS(dest, a, b) dest[0]= a[1] * b[2] - a[2] * b[1]; dest[1]= a[2] * b[0] - a[0] * b[2]; dest[2]= a[0] * b[1] - a[1] * b[0]
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#define VECMUL(dest, f) dest[0]*= f; dest[1]*= f; dest[2]*= f
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struct HaloRen;
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struct ShadeInput;
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typedef struct ShadeResult
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{
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float diff[3];
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float spec[3];
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float alpha;
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} ShadeResult;
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float mistfactor(float *co); /* dist en hoogte, return alpha */
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void render_lighting_halo(struct HaloRen *har, float *colf);
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unsigned int calchalo_z(struct HaloRen *har, unsigned int zz);
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void add_halo_flare(void);
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void shade_input_set_coords(ShadeInput *shi, float u, float v, int i1, int i2, int i3);
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void shade_color(struct ShadeInput *shi, ShadeResult *shr);
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void shade_lamp_loop(struct ShadeInput *shi, ShadeResult *shr, int mask);
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float fresnel_fac(float *view, float *vn, float fresnel, float fac);
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void calc_R_ref(struct ShadeInput *shi);
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float spec(float inp, int hard);
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/* -------- ray.c ------- */
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extern void ray_shadow(ShadeInput *, LampRen *, float *, int);
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extern void ray_trace(ShadeInput *, ShadeResult *, int);
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/**
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* Apply the background (sky). Depending on the active alphamode and
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* worldmode, different filling strategies are applied.
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* Active alphamode = R.r.alphamode
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* Active worldmode = R.wrld.mode
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* <LI>
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* <IT> R_ALPHAPREMUL - do not fill sky, but apply alpha to colours
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* <IT> R_ALPHAKEY - do not fill sky, do not apply alpha to colours
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* <IT> R_ADDSKY - fill skycolour in the background, blend
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* transparent colours with the background
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* (there's also a world dependency here?
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* <LI>
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* <IT> R.wrld.mode == WO_MIST
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* <IT> R.r.bufflag == 1, R.flag == R_SEC_FIELD
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* <IT> R.wrld.skytype == ( WO_SKYBLEND ^ WO_SKYTEX)
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* <IT> R.wrld.skytype == WO_SKYPAPER
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* <IT> R.r.mode == R_PANORAMA )
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* </LI>
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* </LI>
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* @param rect
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* @param y
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*/
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void scanlinesky(char *rect, int y);
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/**
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* Do z buffer stuff.
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*/
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void zbufshade(void);
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/**
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* Insert transparent faces into the z buffer?
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*/
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void zbufshadeDA(void); /* Delta Accum Pixel Struct */
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/**
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* Also called in: zbuf.c
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*/
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void *shadepixel(float x, float y, int vlaknr, int mask, float *col);
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void shadepixel_short(float x, float y, int vlaknr, int mask, unsigned short *shortcol);
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/**
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* Shade the pixel at xn, yn for halo har, and write the result to col.
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* Also called in: previewrender.c
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* @param har The halo to be rendered on this location
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* @param col [unsigned int 3] The destination colour vector
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* @param zz Some kind of distance
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* @param dist Square of the distance of this coordinate to the halo's center
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* @param x [f] Pixel x relative to center
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* @param y [f] Pixel y relative to center
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* @param flarec Flare counter? Always har->flarec...
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*/
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/* void shadehalo(struct HaloRen *har, char *col, unsigned int zz, float dist, float x, float y, short flarec); */
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/**
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* A cryptic but very efficient way of counting the number of bits that
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* is set in the unsigned short.
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*/
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int count_mask(unsigned short mask);
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/* These defines are only used internally :) */
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/* dirty hack: pointers are negative, indices positive */
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/* pointers should be converted to positive numbers */
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#define IS_A_POINTER_CODE(a) ((a)<0)
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#define POINTER_FROM_CODE(a) ((void *)(-(a)))
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#define POINTER_TO_CODE(a) (-(long)(a))
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#endif /* RENDER_EXT_H */
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