mirror of
https://git.code.sf.net/p/quake/quakeforge-old
synced 2024-11-10 22:51:37 +00:00
c3f5581b0a
Unchained, Ultimate, Ultra, Up Yours, Underworld, Underground, Unified, Unity, etc. You know the drill. This takes care of the "standalone" problem with the wrong name, and the recent snafu with multiple developers working on the same files simultaneously...expect me (and probably others) to start locking dirs when updates are taking place. And yes, this update is really as large as it looks. Software only at the moment, but I will have the makefile updated to build the GL builds as well.
1159 lines
24 KiB
C
1159 lines
24 KiB
C
/*
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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 the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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// r_main.c
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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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texture_t *r_notexture_mip;
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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 gl_finish = {"gl_finish","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","0"};
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cvar_t gl_reporttjunctions = {"gl_reporttjunctions","0"};
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cvar_t gl_doubleeyes = {"gl_doubleeys", "1"};
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extern cvar_t gl_ztrick;
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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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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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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 s, t;
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float l;
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int i, j;
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int index;
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trivertx_t *v, *verts;
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int list;
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int *order;
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vec3_t point;
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float *normal;
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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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float s, t, l;
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int i, j;
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int index;
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trivertx_t *v, *verts;
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int list;
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int *order;
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vec3_t point;
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float *normal;
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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, j;
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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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trivertx_t *verts, *v;
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int index;
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float s, t, 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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i = currententity - cl_entities;
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if (i >= 1 && i<=cl.maxclients /* && !strcmp (currententity->model->name, "progs/player.mdl") */)
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if (ambientlight < 8)
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ambientlight = shadelight = 8;
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// HACK HACK HACK -- no fullbright colors, so make torches full light
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if (!strcmp (clmodel->name, "progs/flame2.mdl")
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|| !strcmp (clmodel->name, "progs/flame.mdl") )
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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") && gl_doubleeyes.value) {
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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 {
|
|
glTranslatef (paliashdr->scale_origin[0], paliashdr->scale_origin[1], paliashdr->scale_origin[2]);
|
|
glScalef (paliashdr->scale[0], paliashdr->scale[1], paliashdr->scale[2]);
|
|
}
|
|
|
|
anim = (int)(cl.time*10) & 3;
|
|
GL_Bind(paliashdr->gl_texturenum[currententity->skinnum][anim]);
|
|
|
|
// we can't dynamically colormap textures, so they are cached
|
|
// seperately for the players. Heads are just uncolored.
|
|
if (currententity->colormap != vid.colormap && !gl_nocolors.value)
|
|
{
|
|
i = currententity - cl_entities;
|
|
if (i >= 1 && i<=cl.maxclients /* && !strcmp (currententity->model->name, "progs/player.mdl") */)
|
|
GL_Bind(playertextures - 1 + 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;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
=============
|
|
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)
|
|
return;
|
|
|
|
if (chase_active.value)
|
|
return;
|
|
|
|
if (envmap)
|
|
return;
|
|
|
|
if (!r_drawentities.value)
|
|
return;
|
|
|
|
if (cl.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;
|
|
|
|
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)
|
|
{
|
|
int edgecount;
|
|
vrect_t vrect;
|
|
float w, h;
|
|
|
|
// don't allow cheats in multiplayer
|
|
if (cl.maxclients > 1)
|
|
Cvar_Set ("r_fullbright", "0");
|
|
|
|
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;
|
|
float yfov;
|
|
int i;
|
|
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;
|
|
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);
|
|
}
|
|
|
|
/*
|
|
=============
|
|
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);
|
|
}
|
|
|
|
/*
|
|
================
|
|
R_RenderView
|
|
|
|
r_refdef must be set before the first call
|
|
================
|
|
*/
|
|
void R_RenderView (void)
|
|
{
|
|
double time1, time2;
|
|
GLfloat colors[4] = {(GLfloat) 0.0, (GLfloat) 0.0, (GLfloat) 1, (GLfloat) 0.20};
|
|
|
|
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
|
|
|
|
/***** Experimental silly looking fog ******
|
|
****** Use r_fullbright if you enable ******
|
|
glFogi(GL_FOG_MODE, GL_LINEAR);
|
|
glFogfv(GL_FOG_COLOR, colors);
|
|
glFogf(GL_FOG_END, 512.0);
|
|
glEnable(GL_FOG);
|
|
********************************************/
|
|
|
|
R_RenderScene ();
|
|
R_DrawViewModel ();
|
|
R_DrawWaterSurfaces ();
|
|
|
|
// More fog right here :)
|
|
// glDisable(GL_FOG);
|
|
// End of all fog code...
|
|
|
|
// 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);
|
|
}
|
|
}
|