mirror of
https://git.code.sf.net/p/quake/newtree
synced 2024-11-22 20:21:38 +00:00
1149 lines
24 KiB
C
1149 lines
24 KiB
C
/*
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gl_rmain.c
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(description)
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Copyright (C) 1996-1997 Id Software, Inc.
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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.
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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.
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See the GNU General Public License for more details.
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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:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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$Id$
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*/
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#include "quakedef.h"
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entity_t r_worldentity;
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qboolean r_cache_thrash; // compatability
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vec3_t modelorg, r_entorigin;
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entity_t *currententity;
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int r_visframecount; // bumped when going to a new PVS
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int r_framecount; // used for dlight push checking
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mplane_t frustum[4];
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int c_brush_polys, c_alias_polys;
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qboolean envmap; // true during envmap command capture
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int currenttexture = -1; // to avoid unnecessary texture sets
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int cnttextures[2] = {-1, -1}; // cached
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int particletexture; // little dot for particles
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int playertextures; // up to 16 color translated skins
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int mirrortexturenum; // quake texturenum, not gltexturenum
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qboolean mirror;
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mplane_t *mirror_plane;
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//
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// view origin
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//
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vec3_t vup;
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vec3_t vpn;
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vec3_t vright;
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vec3_t r_origin;
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float r_world_matrix[16];
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float r_base_world_matrix[16];
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//
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// screen size info
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//
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refdef_t r_refdef;
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mleaf_t *r_viewleaf, *r_oldviewleaf;
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int d_lightstylevalue[256]; // 8.8 fraction of base light value
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void R_MarkLeaves (void);
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cvar_t r_norefresh = {"r_norefresh","0"};
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cvar_t r_drawentities = {"r_drawentities","1"};
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cvar_t r_drawviewmodel = {"r_drawviewmodel","1"};
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cvar_t r_speeds = {"r_speeds","0"};
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cvar_t r_fullbright = {"r_fullbright","0"};
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cvar_t r_lightmap = {"r_lightmap","0"};
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cvar_t r_shadows = {"r_shadows","0"};
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cvar_t r_mirroralpha = {"r_mirroralpha","1"};
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cvar_t r_wateralpha = {"r_wateralpha","1"};
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cvar_t r_dynamic = {"r_dynamic","1"};
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cvar_t r_novis = {"r_novis","0"};
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cvar_t r_netgraph = {"r_netgraph","0"};
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cvar_t gl_clear = {"gl_clear","0"};
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cvar_t gl_cull = {"gl_cull","1"};
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cvar_t gl_texsort = {"gl_texsort","1"};
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cvar_t gl_smoothmodels = {"gl_smoothmodels","1"};
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cvar_t gl_affinemodels = {"gl_affinemodels","0"};
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cvar_t gl_polyblend = {"gl_polyblend","1"};
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cvar_t gl_flashblend = {"gl_flashblend","1"};
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cvar_t gl_playermip = {"gl_playermip","0"};
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cvar_t gl_nocolors = {"gl_nocolors","0"};
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cvar_t gl_keeptjunctions = {"gl_keeptjunctions","1"};
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cvar_t gl_reporttjunctions = {"gl_reporttjunctions","0"};
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cvar_t gl_finish = {"gl_finish","0"};
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extern cvar_t gl_ztrick;
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extern cvar_t scr_fov;
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/*
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=================
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R_CullBox
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Returns true if the box is completely outside the frustom
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=================
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*/
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qboolean R_CullBox (vec3_t mins, vec3_t maxs)
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{
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int i;
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for (i=0 ; i<4 ; i++)
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if (BoxOnPlaneSide (mins, maxs, &frustum[i]) == 2)
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return true;
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return false;
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}
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void R_RotateForEntity (entity_t *e)
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{
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glTranslatef (e->origin[0], e->origin[1], e->origin[2]);
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glRotatef (e->angles[1], 0, 0, 1);
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glRotatef (-e->angles[0], 0, 1, 0);
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//ZOID: fixed z angle
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glRotatef (e->angles[2], 1, 0, 0);
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}
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/*
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=============================================================
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SPRITE MODELS
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=============================================================
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*/
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/*
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================
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R_GetSpriteFrame
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================
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*/
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mspriteframe_t *R_GetSpriteFrame (entity_t *currententity)
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{
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msprite_t *psprite;
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mspritegroup_t *pspritegroup;
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mspriteframe_t *pspriteframe;
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int i, numframes, frame;
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float *pintervals, fullinterval, targettime, time;
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psprite = currententity->model->cache.data;
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frame = currententity->frame;
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if ((frame >= psprite->numframes) || (frame < 0))
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{
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Con_Printf ("R_DrawSprite: no such frame %d\n", frame);
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frame = 0;
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}
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if (psprite->frames[frame].type == SPR_SINGLE)
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{
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pspriteframe = psprite->frames[frame].frameptr;
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}
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else
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{
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pspritegroup = (mspritegroup_t *)psprite->frames[frame].frameptr;
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pintervals = pspritegroup->intervals;
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numframes = pspritegroup->numframes;
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fullinterval = pintervals[numframes-1];
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time = cl.time + currententity->syncbase;
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// when loading in Mod_LoadSpriteGroup, we guaranteed all interval values
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// are positive, so we don't have to worry about division by 0
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targettime = time - ((int)(time / fullinterval)) * fullinterval;
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for (i=0 ; i<(numframes-1) ; i++)
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{
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if (pintervals[i] > targettime)
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break;
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}
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pspriteframe = pspritegroup->frames[i];
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}
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return pspriteframe;
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}
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/*
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=================
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R_DrawSpriteModel
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=================
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*/
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void R_DrawSpriteModel (entity_t *e)
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{
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vec3_t point;
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mspriteframe_t *frame;
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float *up, *right;
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vec3_t v_forward, v_right, v_up;
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msprite_t *psprite;
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// don't even bother culling, because it's just a single
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// polygon without a surface cache
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frame = R_GetSpriteFrame (e);
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psprite = currententity->model->cache.data;
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if (psprite->type == SPR_ORIENTED)
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{ // bullet marks on walls
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AngleVectors (currententity->angles, v_forward, v_right, v_up);
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up = v_up;
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right = v_right;
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}
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else
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{ // normal sprite
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up = vup;
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right = vright;
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}
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glColor3f (1,1,1);
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GL_DisableMultitexture();
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GL_Bind(frame->gl_texturenum);
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glEnable (GL_ALPHA_TEST);
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glBegin (GL_QUADS);
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glEnable (GL_ALPHA_TEST);
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glBegin (GL_QUADS);
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glTexCoord2f (0, 1);
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VectorMA (e->origin, frame->down, up, point);
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VectorMA (point, frame->left, right, point);
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glVertex3fv (point);
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glTexCoord2f (0, 0);
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VectorMA (e->origin, frame->up, up, point);
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VectorMA (point, frame->left, right, point);
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glVertex3fv (point);
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glTexCoord2f (1, 0);
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VectorMA (e->origin, frame->up, up, point);
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VectorMA (point, frame->right, right, point);
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glVertex3fv (point);
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glTexCoord2f (1, 1);
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VectorMA (e->origin, frame->down, up, point);
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VectorMA (point, frame->right, right, point);
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glVertex3fv (point);
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glEnd ();
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glDisable (GL_ALPHA_TEST);
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}
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/*
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=============================================================
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ALIAS MODELS
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=============================================================
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*/
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#define NUMVERTEXNORMALS 162
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float r_avertexnormals[NUMVERTEXNORMALS][3] = {
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#include "anorms.h"
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};
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vec3_t shadevector;
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float shadelight, ambientlight;
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// precalculated dot products for quantized angles
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#define SHADEDOT_QUANT 16
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float r_avertexnormal_dots[SHADEDOT_QUANT][256] =
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#include "anorm_dots.h"
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;
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float *shadedots = r_avertexnormal_dots[0];
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int lastposenum;
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/*
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=============
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GL_DrawAliasFrame
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=============
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*/
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void GL_DrawAliasFrame (aliashdr_t *paliashdr, int posenum)
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{
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float l;
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trivertx_t *verts;
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int *order;
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int count;
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lastposenum = posenum;
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verts = (trivertx_t *)((byte *)paliashdr + paliashdr->posedata);
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verts += posenum * paliashdr->poseverts;
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order = (int *)((byte *)paliashdr + paliashdr->commands);
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while (1)
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{
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// get the vertex count and primitive type
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count = *order++;
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if (!count)
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break; // done
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if (count < 0)
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{
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count = -count;
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glBegin (GL_TRIANGLE_FAN);
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}
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else
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glBegin (GL_TRIANGLE_STRIP);
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do
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{
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// texture coordinates come from the draw list
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glTexCoord2f (((float *)order)[0], ((float *)order)[1]);
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order += 2;
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// normals and vertexes come from the frame list
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l = shadedots[verts->lightnormalindex] * shadelight;
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glColor3f (l, l, l);
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glVertex3f (verts->v[0], verts->v[1], verts->v[2]);
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verts++;
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} while (--count);
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glEnd ();
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}
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}
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/*
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=============
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GL_DrawAliasShadow
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=============
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*/
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extern vec3_t lightspot;
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void GL_DrawAliasShadow (aliashdr_t *paliashdr, int posenum)
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{
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trivertx_t *verts;
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int *order;
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vec3_t point;
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float height, lheight;
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int count;
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lheight = currententity->origin[2] - lightspot[2];
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height = 0;
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verts = (trivertx_t *)((byte *)paliashdr + paliashdr->posedata);
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verts += posenum * paliashdr->poseverts;
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order = (int *)((byte *)paliashdr + paliashdr->commands);
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height = -lheight + 1.0;
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while (1)
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{
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// get the vertex count and primitive type
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count = *order++;
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if (!count)
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break; // done
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if (count < 0)
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{
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count = -count;
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glBegin (GL_TRIANGLE_FAN);
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}
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else
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glBegin (GL_TRIANGLE_STRIP);
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do
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{
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// texture coordinates come from the draw list
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// (skipped for shadows) glTexCoord2fv ((float *)order);
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order += 2;
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// normals and vertexes come from the frame list
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point[0] = verts->v[0] * paliashdr->scale[0] + paliashdr->scale_origin[0];
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point[1] = verts->v[1] * paliashdr->scale[1] + paliashdr->scale_origin[1];
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point[2] = verts->v[2] * paliashdr->scale[2] + paliashdr->scale_origin[2];
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point[0] -= shadevector[0]*(point[2]+lheight);
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point[1] -= shadevector[1]*(point[2]+lheight);
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point[2] = height;
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// height -= 0.001;
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glVertex3fv (point);
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verts++;
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} while (--count);
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glEnd ();
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}
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}
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/*
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=================
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R_SetupAliasFrame
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=================
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*/
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void R_SetupAliasFrame (int frame, aliashdr_t *paliashdr)
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{
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int pose, numposes;
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float interval;
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if ((frame >= paliashdr->numframes) || (frame < 0))
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{
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Con_DPrintf ("R_AliasSetupFrame: no such frame %d\n", frame);
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frame = 0;
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}
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pose = paliashdr->frames[frame].firstpose;
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numposes = paliashdr->frames[frame].numposes;
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if (numposes > 1)
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{
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interval = paliashdr->frames[frame].interval;
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pose += (int)(cl.time / interval) % numposes;
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}
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GL_DrawAliasFrame (paliashdr, pose);
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}
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/*
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=================
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R_DrawAliasModel
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=================
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*/
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void R_DrawAliasModel (entity_t *e)
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{
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int i;
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int lnum;
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vec3_t dist;
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float add;
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model_t *clmodel;
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vec3_t mins, maxs;
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aliashdr_t *paliashdr;
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float an;
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int anim;
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clmodel = currententity->model;
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VectorAdd (currententity->origin, clmodel->mins, mins);
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VectorAdd (currententity->origin, clmodel->maxs, maxs);
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if (R_CullBox (mins, maxs))
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return;
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VectorCopy (currententity->origin, r_entorigin);
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VectorSubtract (r_origin, r_entorigin, modelorg);
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//
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// get lighting information
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//
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ambientlight = shadelight = R_LightPoint (currententity->origin);
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// allways give the gun some light
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if (e == &cl.viewent && ambientlight < 24)
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ambientlight = shadelight = 24;
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for (lnum=0 ; lnum<MAX_DLIGHTS ; lnum++)
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{
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if (cl_dlights[lnum].die >= cl.time)
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{
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VectorSubtract (currententity->origin,
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cl_dlights[lnum].origin,
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dist);
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add = cl_dlights[lnum].radius - Length(dist);
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if (add > 0) {
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ambientlight += add;
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//ZOID models should be affected by dlights as well
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shadelight += add;
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}
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}
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}
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// clamp lighting so it doesn't overbright as much
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if (ambientlight > 128)
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ambientlight = 128;
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if (ambientlight + shadelight > 192)
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shadelight = 192 - ambientlight;
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// ZOID: never allow players to go totally black
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if (!strcmp(clmodel->name, "progs/player.mdl")) {
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if (ambientlight < 8)
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ambientlight = shadelight = 8;
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} else if (!strcmp (clmodel->name, "progs/flame2.mdl")
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|| !strcmp (clmodel->name, "progs/flame.mdl") )
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// HACK HACK HACK -- no fullbright colors, so make torches full light
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ambientlight = shadelight = 256;
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shadedots = r_avertexnormal_dots[((int)(e->angles[1] * (SHADEDOT_QUANT / 360.0))) & (SHADEDOT_QUANT - 1)];
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shadelight = shadelight / 200.0;
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an = e->angles[1]/180*M_PI;
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shadevector[0] = cos(-an);
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shadevector[1] = sin(-an);
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shadevector[2] = 1;
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VectorNormalize (shadevector);
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//
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// locate the proper data
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//
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paliashdr = (aliashdr_t *)Mod_Extradata (currententity->model);
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c_alias_polys += paliashdr->numtris;
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//
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// draw all the triangles
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//
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GL_DisableMultitexture();
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glPushMatrix ();
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R_RotateForEntity (e);
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if (!strcmp (clmodel->name, "progs/eyes.mdl") ) {
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glTranslatef (paliashdr->scale_origin[0], paliashdr->scale_origin[1], paliashdr->scale_origin[2] - (22 + 8));
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// double size of eyes, since they are really hard to see in gl
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glScalef (paliashdr->scale[0]*2, paliashdr->scale[1]*2, paliashdr->scale[2]*2);
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} else {
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glTranslatef (paliashdr->scale_origin[0], paliashdr->scale_origin[1], paliashdr->scale_origin[2]);
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glScalef (paliashdr->scale[0], paliashdr->scale[1], paliashdr->scale[2]);
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}
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anim = (int)(cl.time*10) & 3;
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GL_Bind(paliashdr->gl_texturenum[currententity->skinnum][anim]);
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// we can't dynamically colormap textures, so they are cached
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// seperately for the players. Heads are just uncolored.
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if (currententity->scoreboard && !gl_nocolors.value)
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{
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i = currententity->scoreboard - cl.players;
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if (!currententity->scoreboard->skin) {
|
|
Skin_Find(currententity->scoreboard);
|
|
R_TranslatePlayerSkin(i);
|
|
}
|
|
if (i >= 0 && i<MAX_CLIENTS)
|
|
GL_Bind(playertextures + i);
|
|
}
|
|
|
|
if (gl_smoothmodels.value)
|
|
glShadeModel (GL_SMOOTH);
|
|
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
|
|
|
if (gl_affinemodels.value)
|
|
glHint (GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
|
|
|
|
R_SetupAliasFrame (currententity->frame, paliashdr);
|
|
|
|
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
|
|
|
glShadeModel (GL_FLAT);
|
|
if (gl_affinemodels.value)
|
|
glHint (GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
|
|
|
|
glPopMatrix ();
|
|
|
|
if (r_shadows.value)
|
|
{
|
|
glPushMatrix ();
|
|
R_RotateForEntity (e);
|
|
glDisable (GL_TEXTURE_2D);
|
|
glEnable (GL_BLEND);
|
|
glColor4f (0,0,0,0.5);
|
|
GL_DrawAliasShadow (paliashdr, lastposenum);
|
|
glEnable (GL_TEXTURE_2D);
|
|
glDisable (GL_BLEND);
|
|
glColor4f (1,1,1,1);
|
|
glPopMatrix ();
|
|
}
|
|
|
|
}
|
|
|
|
//==================================================================================
|
|
|
|
/*
|
|
=============
|
|
R_DrawEntitiesOnList
|
|
=============
|
|
*/
|
|
void R_DrawEntitiesOnList (void)
|
|
{
|
|
int i;
|
|
|
|
if (!r_drawentities.value)
|
|
return;
|
|
|
|
// draw sprites seperately, because of alpha blending
|
|
for (i=0 ; i<cl_numvisedicts ; i++)
|
|
{
|
|
currententity = &cl_visedicts[i];
|
|
|
|
switch (currententity->model->type)
|
|
{
|
|
case mod_alias:
|
|
R_DrawAliasModel (currententity);
|
|
break;
|
|
|
|
case mod_brush:
|
|
R_DrawBrushModel (currententity);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
for (i=0 ; i<cl_numvisedicts ; i++)
|
|
{
|
|
currententity = &cl_visedicts[i];
|
|
|
|
switch (currententity->model->type)
|
|
{
|
|
case mod_sprite:
|
|
R_DrawSpriteModel (currententity);
|
|
break;
|
|
|
|
default :
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
=============
|
|
R_DrawViewModel
|
|
=============
|
|
*/
|
|
void R_DrawViewModel (void)
|
|
{
|
|
float ambient[4], diffuse[4];
|
|
int j;
|
|
int lnum;
|
|
vec3_t dist;
|
|
float add;
|
|
dlight_t *dl;
|
|
int ambientlight, shadelight;
|
|
|
|
if (!r_drawviewmodel.value || !Cam_DrawViewModel())
|
|
return;
|
|
|
|
if (envmap)
|
|
return;
|
|
|
|
if (!r_drawentities.value)
|
|
return;
|
|
|
|
if (cl.stats[STAT_ITEMS] & IT_INVISIBILITY)
|
|
return;
|
|
|
|
if (cl.stats[STAT_HEALTH] <= 0)
|
|
return;
|
|
|
|
currententity = &cl.viewent;
|
|
if (!currententity->model)
|
|
return;
|
|
|
|
j = R_LightPoint (currententity->origin);
|
|
|
|
if (j < 24)
|
|
j = 24; // allways give some light on gun
|
|
ambientlight = j;
|
|
shadelight = j;
|
|
|
|
// add dynamic lights
|
|
for (lnum=0 ; lnum<MAX_DLIGHTS ; lnum++)
|
|
{
|
|
dl = &cl_dlights[lnum];
|
|
if (!dl->radius)
|
|
continue;
|
|
if (!dl->radius)
|
|
continue;
|
|
if (dl->die < cl.time)
|
|
continue;
|
|
|
|
VectorSubtract (currententity->origin, dl->origin, dist);
|
|
add = dl->radius - Length(dist);
|
|
if (add > 0)
|
|
ambientlight += add;
|
|
}
|
|
|
|
ambient[0] = ambient[1] = ambient[2] = ambient[3] = (float)ambientlight / 128;
|
|
diffuse[0] = diffuse[1] = diffuse[2] = diffuse[3] = (float)shadelight / 128;
|
|
|
|
// hack the depth range to prevent view model from poking into walls
|
|
glDepthRange (gldepthmin, gldepthmin + 0.3*(gldepthmax-gldepthmin));
|
|
R_DrawAliasModel (currententity);
|
|
glDepthRange (gldepthmin, gldepthmax);
|
|
}
|
|
|
|
|
|
/*
|
|
============
|
|
R_PolyBlend
|
|
============
|
|
*/
|
|
void R_PolyBlend (void)
|
|
{
|
|
if (!gl_polyblend.value)
|
|
return;
|
|
if (!v_blend[3])
|
|
return;
|
|
|
|
//Con_Printf("R_PolyBlend(): %4.2f %4.2f %4.2f %4.2f\n",v_blend[0], v_blend[1], v_blend[2], v_blend[3]);
|
|
|
|
GL_DisableMultitexture();
|
|
|
|
glDisable (GL_ALPHA_TEST);
|
|
glEnable (GL_BLEND);
|
|
glDisable (GL_DEPTH_TEST);
|
|
glDisable (GL_TEXTURE_2D);
|
|
|
|
glLoadIdentity ();
|
|
|
|
glRotatef (-90, 1, 0, 0); // put Z going up
|
|
glRotatef (90, 0, 0, 1); // put Z going up
|
|
|
|
glColor4fv (v_blend);
|
|
|
|
glBegin (GL_QUADS);
|
|
|
|
glVertex3f (10, 100, 100);
|
|
glVertex3f (10, -100, 100);
|
|
glVertex3f (10, -100, -100);
|
|
glVertex3f (10, 100, -100);
|
|
glEnd ();
|
|
|
|
glDisable (GL_BLEND);
|
|
glEnable (GL_TEXTURE_2D);
|
|
glEnable (GL_ALPHA_TEST);
|
|
}
|
|
|
|
|
|
int SignbitsForPlane (mplane_t *out)
|
|
{
|
|
int bits, j;
|
|
|
|
// for fast box on planeside test
|
|
|
|
bits = 0;
|
|
for (j=0 ; j<3 ; j++)
|
|
{
|
|
if (out->normal[j] < 0)
|
|
bits |= 1<<j;
|
|
}
|
|
return bits;
|
|
}
|
|
|
|
|
|
void R_SetFrustum (void)
|
|
{
|
|
int i;
|
|
|
|
if (r_refdef.fov_x == 90)
|
|
{
|
|
// front side is visible
|
|
|
|
VectorAdd (vpn, vright, frustum[0].normal);
|
|
VectorSubtract (vpn, vright, frustum[1].normal);
|
|
|
|
VectorAdd (vpn, vup, frustum[2].normal);
|
|
VectorSubtract (vpn, vup, frustum[3].normal);
|
|
}
|
|
else
|
|
{
|
|
|
|
// rotate VPN right by FOV_X/2 degrees
|
|
RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
|
|
// rotate VPN left by FOV_X/2 degrees
|
|
RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
|
|
// rotate VPN up by FOV_X/2 degrees
|
|
RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
|
|
// rotate VPN down by FOV_X/2 degrees
|
|
RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
|
|
}
|
|
|
|
for (i=0 ; i<4 ; i++)
|
|
{
|
|
frustum[i].type = PLANE_ANYZ;
|
|
frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
|
|
frustum[i].signbits = SignbitsForPlane (&frustum[i]);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
===============
|
|
R_SetupFrame
|
|
===============
|
|
*/
|
|
void R_SetupFrame (void)
|
|
{
|
|
// don't allow cheats in multiplayer
|
|
r_fullbright.value = 0;
|
|
r_lightmap.value = 0;
|
|
if (!atoi(Info_ValueForKey(cl.serverinfo, "watervis")))
|
|
r_wateralpha.value = 1;
|
|
|
|
R_AnimateLight ();
|
|
|
|
r_framecount++;
|
|
|
|
// build the transformation matrix for the given view angles
|
|
VectorCopy (r_refdef.vieworg, r_origin);
|
|
|
|
AngleVectors (r_refdef.viewangles, vpn, vright, vup);
|
|
|
|
// current viewleaf
|
|
r_oldviewleaf = r_viewleaf;
|
|
r_viewleaf = Mod_PointInLeaf (r_origin, cl.worldmodel);
|
|
|
|
V_SetContentsColor (r_viewleaf->contents);
|
|
V_CalcBlend ();
|
|
|
|
r_cache_thrash = false;
|
|
|
|
c_brush_polys = 0;
|
|
c_alias_polys = 0;
|
|
|
|
}
|
|
|
|
|
|
void MYgluPerspective( GLdouble fovy, GLdouble aspect,
|
|
GLdouble zNear, GLdouble zFar )
|
|
{
|
|
GLdouble xmin, xmax, ymin, ymax;
|
|
|
|
ymax = zNear * tan( fovy * M_PI / 360.0 );
|
|
ymin = -ymax;
|
|
|
|
xmin = ymin * aspect;
|
|
xmax = ymax * aspect;
|
|
|
|
glFrustum( xmin, xmax, ymin, ymax, zNear, zFar );
|
|
}
|
|
|
|
|
|
/*
|
|
=============
|
|
R_SetupGL
|
|
=============
|
|
*/
|
|
void R_SetupGL (void)
|
|
{
|
|
float screenaspect;
|
|
extern int glwidth, glheight;
|
|
int x, x2, y2, y, w, h;
|
|
|
|
//
|
|
// set up viewpoint
|
|
//
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity ();
|
|
x = r_refdef.vrect.x * glwidth/vid.width;
|
|
x2 = (r_refdef.vrect.x + r_refdef.vrect.width) * glwidth/vid.width;
|
|
y = (vid.height-r_refdef.vrect.y) * glheight/vid.height;
|
|
y2 = (vid.height - (r_refdef.vrect.y + r_refdef.vrect.height)) * glheight/vid.height;
|
|
|
|
// fudge around because of frac screen scale
|
|
if (x > 0)
|
|
x--;
|
|
if (x2 < glwidth)
|
|
x2++;
|
|
if (y2 < 0)
|
|
y2--;
|
|
if (y < glheight)
|
|
y++;
|
|
|
|
w = x2 - x;
|
|
h = y - y2;
|
|
|
|
if (envmap)
|
|
{
|
|
x = y2 = 0;
|
|
w = h = 256;
|
|
}
|
|
|
|
glViewport (glx + x, gly + y2, w, h);
|
|
screenaspect = (float)r_refdef.vrect.width/r_refdef.vrect.height;
|
|
// yfov = 2*atan((float)r_refdef.vrect.height/r_refdef.vrect.width)*180/M_PI;
|
|
// yfov = (2.0 * tan (scr_fov.value/360*M_PI)) / screenaspect;
|
|
// yfov = 2*atan((float)r_refdef.vrect.height/r_refdef.vrect.width)*(scr_fov.value*2)/M_PI;
|
|
// MYgluPerspective (yfov, screenaspect, 4, 4096);
|
|
MYgluPerspective (r_refdef.fov_y, screenaspect, 4, 4096);
|
|
|
|
if (mirror)
|
|
{
|
|
if (mirror_plane->normal[2])
|
|
glScalef (1, -1, 1);
|
|
else
|
|
glScalef (-1, 1, 1);
|
|
glCullFace(GL_BACK);
|
|
}
|
|
else
|
|
glCullFace(GL_FRONT);
|
|
|
|
glMatrixMode(GL_MODELVIEW);
|
|
glLoadIdentity ();
|
|
|
|
glRotatef (-90, 1, 0, 0); // put Z going up
|
|
glRotatef (90, 0, 0, 1); // put Z going up
|
|
glRotatef (-r_refdef.viewangles[2], 1, 0, 0);
|
|
glRotatef (-r_refdef.viewangles[0], 0, 1, 0);
|
|
glRotatef (-r_refdef.viewangles[1], 0, 0, 1);
|
|
glTranslatef (-r_refdef.vieworg[0], -r_refdef.vieworg[1], -r_refdef.vieworg[2]);
|
|
|
|
glGetFloatv (GL_MODELVIEW_MATRIX, r_world_matrix);
|
|
|
|
//
|
|
// set drawing parms
|
|
//
|
|
if (gl_cull.value)
|
|
glEnable(GL_CULL_FACE);
|
|
else
|
|
glDisable(GL_CULL_FACE);
|
|
|
|
glDisable(GL_BLEND);
|
|
glDisable(GL_ALPHA_TEST);
|
|
glEnable(GL_DEPTH_TEST);
|
|
}
|
|
|
|
/*
|
|
================
|
|
R_RenderScene
|
|
|
|
r_refdef must be set before the first call
|
|
================
|
|
*/
|
|
void R_RenderScene (void)
|
|
{
|
|
R_SetupFrame ();
|
|
|
|
R_SetFrustum ();
|
|
|
|
R_SetupGL ();
|
|
|
|
R_MarkLeaves (); // done here so we know if we're in water
|
|
|
|
R_DrawWorld (); // adds static entities to the list
|
|
|
|
S_ExtraUpdate (); // don't let sound get messed up if going slow
|
|
|
|
R_DrawEntitiesOnList ();
|
|
|
|
GL_DisableMultitexture();
|
|
|
|
R_RenderDlights ();
|
|
|
|
R_DrawParticles ();
|
|
|
|
#ifdef GLTEST
|
|
Test_Draw ();
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
/*
|
|
=============
|
|
R_Clear
|
|
=============
|
|
*/
|
|
void R_Clear (void)
|
|
{
|
|
if (r_mirroralpha.value != 1.0)
|
|
{
|
|
if (gl_clear.value)
|
|
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
else
|
|
glClear (GL_DEPTH_BUFFER_BIT);
|
|
gldepthmin = 0;
|
|
gldepthmax = 0.5;
|
|
glDepthFunc (GL_LEQUAL);
|
|
}
|
|
else if (gl_ztrick.value)
|
|
{
|
|
static int trickframe;
|
|
|
|
if (gl_clear.value)
|
|
glClear (GL_COLOR_BUFFER_BIT);
|
|
|
|
trickframe++;
|
|
if (trickframe & 1)
|
|
{
|
|
gldepthmin = 0;
|
|
gldepthmax = 0.49999;
|
|
glDepthFunc (GL_LEQUAL);
|
|
}
|
|
else
|
|
{
|
|
gldepthmin = 1;
|
|
gldepthmax = 0.5;
|
|
glDepthFunc (GL_GEQUAL);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (gl_clear.value)
|
|
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
else
|
|
glClear (GL_DEPTH_BUFFER_BIT);
|
|
gldepthmin = 0;
|
|
gldepthmax = 1;
|
|
glDepthFunc (GL_LEQUAL);
|
|
}
|
|
|
|
glDepthRange (gldepthmin, gldepthmax);
|
|
}
|
|
|
|
#if 0 //!!! FIXME, Zoid, mirror is disabled for now
|
|
/*
|
|
=============
|
|
R_Mirror
|
|
=============
|
|
*/
|
|
void R_Mirror (void)
|
|
{
|
|
float d;
|
|
msurface_t *s;
|
|
entity_t *ent;
|
|
|
|
if (!mirror)
|
|
return;
|
|
|
|
memcpy (r_base_world_matrix, r_world_matrix, sizeof(r_base_world_matrix));
|
|
|
|
d = DotProduct (r_refdef.vieworg, mirror_plane->normal) - mirror_plane->dist;
|
|
VectorMA (r_refdef.vieworg, -2*d, mirror_plane->normal, r_refdef.vieworg);
|
|
|
|
d = DotProduct (vpn, mirror_plane->normal);
|
|
VectorMA (vpn, -2*d, mirror_plane->normal, vpn);
|
|
|
|
r_refdef.viewangles[0] = -asin (vpn[2])/M_PI*180;
|
|
r_refdef.viewangles[1] = atan2 (vpn[1], vpn[0])/M_PI*180;
|
|
r_refdef.viewangles[2] = -r_refdef.viewangles[2];
|
|
|
|
ent = &cl_entities[cl.viewentity];
|
|
if (cl_numvisedicts < MAX_VISEDICTS)
|
|
{
|
|
cl_visedicts[cl_numvisedicts] = ent;
|
|
cl_numvisedicts++;
|
|
}
|
|
|
|
gldepthmin = 0.5;
|
|
gldepthmax = 1;
|
|
glDepthRange (gldepthmin, gldepthmax);
|
|
glDepthFunc (GL_LEQUAL);
|
|
|
|
R_RenderScene ();
|
|
R_DrawWaterSurfaces ();
|
|
|
|
|
|
gldepthmin = 0;
|
|
gldepthmax = 0.5;
|
|
glDepthRange (gldepthmin, gldepthmax);
|
|
glDepthFunc (GL_LEQUAL);
|
|
|
|
// blend on top
|
|
glEnable (GL_BLEND);
|
|
glMatrixMode(GL_PROJECTION);
|
|
if (mirror_plane->normal[2])
|
|
glScalef (1,-1,1);
|
|
else
|
|
glScalef (-1,1,1);
|
|
glCullFace(GL_FRONT);
|
|
glMatrixMode(GL_MODELVIEW);
|
|
|
|
glLoadMatrixf (r_base_world_matrix);
|
|
|
|
glColor4f (1,1,1,r_mirroralpha.value);
|
|
s = cl.worldmodel->textures[mirrortexturenum]->texturechain;
|
|
for ( ; s ; s=s->texturechain)
|
|
R_RenderBrushPoly (s);
|
|
cl.worldmodel->textures[mirrortexturenum]->texturechain = NULL;
|
|
glDisable (GL_BLEND);
|
|
glColor4f (1,1,1,1);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
================
|
|
R_RenderView
|
|
|
|
r_refdef must be set before the first call
|
|
================
|
|
*/
|
|
void R_RenderView (void)
|
|
{
|
|
double time1 = 0, time2;
|
|
|
|
if (r_norefresh.value)
|
|
return;
|
|
|
|
if (!r_worldentity.model || !cl.worldmodel)
|
|
Sys_Error ("R_RenderView: NULL worldmodel");
|
|
|
|
if (r_speeds.value)
|
|
{
|
|
glFinish ();
|
|
time1 = Sys_DoubleTime ();
|
|
c_brush_polys = 0;
|
|
c_alias_polys = 0;
|
|
}
|
|
|
|
mirror = false;
|
|
|
|
if (gl_finish.value)
|
|
glFinish ();
|
|
|
|
R_Clear ();
|
|
|
|
// render normal view
|
|
R_RenderScene ();
|
|
R_DrawViewModel ();
|
|
R_DrawWaterSurfaces ();
|
|
|
|
// render mirror view
|
|
// R_Mirror ();
|
|
|
|
R_PolyBlend ();
|
|
|
|
if (r_speeds.value)
|
|
{
|
|
// glFinish ();
|
|
time2 = Sys_DoubleTime ();
|
|
Con_Printf ("%3i ms %4i wpoly %4i epoly\n", (int)((time2-time1)*1000), c_brush_polys, c_alias_polys);
|
|
}
|
|
}
|