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quakeforge-old/common/gl_rmain.c

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/*
gl_rmain.c
Copyright (C) 1996-1997 Id Software, Inc.
Copyright (C) 1999,2000 contributors of the QuakeForge project
Please see the file "AUTHORS" for a list of contributors
Author:
Date: 07 Jan 2000
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA.
*/
#include <qtypes.h>
#include <quakedef.h>
#include <glquake.h>
#include <mathlib.h>
#include <console.h>
#include <view.h>
#include <sound.h>
#include <cvar.h>
#include <sys.h>
#include <draw.h>
#include <sbar.h>
entity_t r_worldentity;
qboolean r_cache_thrash; // compatability
vec3_t modelorg, r_entorigin;
entity_t *currententity;
int r_visframecount; // bumped when going to a new PVS
int r_framecount; // used for dlight push checking
mplane_t frustum[4];
int c_brush_polys, c_alias_polys;
qboolean envmap; // true during envmap command capture
int currenttexture = -1; // to avoid unnecessary texture sets
int cnttextures[2] = {-1, -1}; // cached
int particletexture; // little dot for particles
int playertextures; // up to 16 color translated skins
//
// view origin
//
vec3_t vup;
vec3_t vpn;
vec3_t vright;
vec3_t r_origin;
float r_world_matrix[16];
float r_base_world_matrix[16];
//
// screen size info
//
refdef_t r_refdef;
mleaf_t *r_viewleaf, *r_oldviewleaf;
texture_t *r_notexture_mip;
int d_lightstylevalue[256]; // 8.8 fraction of base light value
cvar_t *r_clearcolor;
void R_MarkLeaves (void);
cvar_t *r_norefresh;
cvar_t *r_drawentities;
cvar_t *r_drawviewmodel;
cvar_t *r_speeds;
cvar_t *r_fullbright;
cvar_t *r_lightmap;
cvar_t *r_shadows;
cvar_t *r_wateralpha;
cvar_t *r_dynamic;
cvar_t *r_novis;
#ifdef QUAKEWORLD
cvar_t *r_netgraph;
#endif
cvar_t *r_fog;
cvar_t *r_volfog;
cvar_t *r_waterwarp;
cvar_t *r_waterripple;
cvar_t *r_sky;
cvar_t *r_skyname;
cvar_t *gl_finish;
cvar_t *gl_clear;
cvar_t *gl_cull;
cvar_t *gl_texsort;
cvar_t *gl_smoothmodels;
cvar_t *gl_affinemodels;
cvar_t *gl_polyblend;
cvar_t *gl_playermip;
cvar_t *gl_nocolors;
cvar_t *gl_keeptjunctions;
cvar_t *gl_doubleeyes;
extern cvar_t *gl_ztrick;
#ifdef QUAKEWORLD
extern cvar_t *scr_fov;
#endif
/*
R_CullBox
Returns true if the box is completely outside the frustom
*/
qboolean
R_CullBox (vec3_t mins, vec3_t maxs) {
int i;
for (i=0 ; i<4 ; i++) {
if (BoxOnPlaneSide (mins, maxs, &frustum[i]) == 2) {
return true;
}
}
return false;
}
void
R_RotateForEntity (entity_t *e) {
glTranslatef (e->origin[0], e->origin[1], e->origin[2]);
glRotatef (e->angles[1], 0, 0, 1);
glRotatef (-e->angles[0], 0, 1, 0);
//ZOID: fixed z angle
glRotatef (e->angles[2], 1, 0, 0);
}
/*
* SPRITE MODELS
*/
/*
R_GetSpriteFrame
*/
mspriteframe_t
*R_GetSpriteFrame (entity_t *currententity) {
msprite_t *psprite;
mspritegroup_t *pspritegroup;
mspriteframe_t *pspriteframe;
int i, numframes, frame;
float *pintervals, fullinterval, targettime, time;
psprite = currententity->model->cache.data;
frame = currententity->frame;
if ((frame >= psprite->numframes) || (frame < 0)) {
Con_Printf ("R_DrawSprite: no such frame %d\n", frame);
frame = 0;
}
if (psprite->frames[frame].type == SPR_SINGLE) {
pspriteframe = psprite->frames[frame].frameptr;
} else {
pspritegroup = (mspritegroup_t *)psprite->frames[frame].frameptr;
pintervals = pspritegroup->intervals;
numframes = pspritegroup->numframes;
fullinterval = pintervals[numframes-1];
time = cl.time + currententity->syncbase;
// when loading in Mod_LoadSpriteGroup, we guaranteed all interval values
// are positive, so we don't have to worry about division by 0
targettime = time - ((int)(time / fullinterval)) * fullinterval;
for (i=0 ; i<(numframes-1) ; i++) {
if (pintervals[i] > targettime)
break;
}
pspriteframe = pspritegroup->frames[i];
}
return pspriteframe;
}
/*
R_DrawSpriteModel
*/
void
R_DrawSpriteModel (entity_t *e) {
vec3_t point;
mspriteframe_t *frame;
float *up, *right;
vec3_t v_forward, v_right, v_up;
msprite_t *psprite;
// don't even bother culling, because it's just a single
// polygon without a surface cache
frame = R_GetSpriteFrame (e);
psprite = currententity->model->cache.data;
if (psprite->type == SPR_ORIENTED) { // bullet marks on walls
AngleVectors (currententity->angles, v_forward, v_right, v_up);
up = v_up;
right = v_right;
} else { // normal sprite
up = vup;
right = vright;
}
glColor3f (1,1,1);
GL_DisableMultitexture();
GL_Bind(frame->gl_texturenum);
glEnable (GL_ALPHA_TEST);
glBegin (GL_QUADS);
glTexCoord2f (0, 1);
VectorMA (e->origin, frame->down, up, point);
VectorMA (point, frame->left, right, point);
glVertex3fv (point);
glTexCoord2f (0, 0);
VectorMA (e->origin, frame->up, up, point);
VectorMA (point, frame->left, right, point);
glVertex3fv (point);
glTexCoord2f (1, 0);
VectorMA (e->origin, frame->up, up, point);
VectorMA (point, frame->right, right, point);
glVertex3fv (point);
glTexCoord2f (1, 1);
VectorMA (e->origin, frame->down, up, point);
VectorMA (point, frame->right, right, point);
glVertex3fv (point);
glEnd ();
glDisable (GL_ALPHA_TEST);
}
/*
ALIAS MODELS
*/
#define NUMVERTEXNORMALS 162
float r_avertexnormals[NUMVERTEXNORMALS][3] = {
#include "anorms.h"
};
vec3_t shadevector;
float shadelight, ambientlight;
// precalculated dot products for quantized angles
#define SHADEDOT_QUANT 16
float r_avertexnormal_dots[SHADEDOT_QUANT][256] =
#include "anorm_dots.-c"
;
float *shadedots = r_avertexnormal_dots[0];
int lastposenum;
/*
GL_DrawAliasFrame
*/
void
GL_DrawAliasFrame (aliashdr_t *paliashdr, int posenum) {
float l;
trivertx_t *verts;
int *order;
int count;
lastposenum = posenum;
verts = (trivertx_t *)((byte *)paliashdr + paliashdr->posedata);
verts += posenum * paliashdr->poseverts;
order = (int *)((byte *)paliashdr + paliashdr->commands);
while (1) {
// get the vertex count and primitive type
count = *order++;
if (!count)
break; // done
if (count < 0) {
count = -count;
glBegin (GL_TRIANGLE_FAN);
} else {
glBegin (GL_TRIANGLE_STRIP);
}
do { // texture coordinates come from the draw list
glTexCoord2f (((float *)order)[0], ((float *)order)[1]);
order += 2;
// normals and vertexes come from the frame list
l = shadedots[verts->lightnormalindex] * shadelight;
glColor3f (l, l, l);
glVertex3f (verts->v[0], verts->v[1], verts->v[2]);
verts++;
} while (--count);
glEnd ();
}
}
/*
GL_DrawAliasShadow
*/
extern vec3_t lightspot;
void
GL_DrawAliasShadow (aliashdr_t *paliashdr, int posenum) {
trivertx_t *verts;
int *order;
vec3_t point;
float height, lheight;
int count;
lheight = currententity->origin[2] - lightspot[2];
height = 0;
verts = (trivertx_t *)((byte *)paliashdr + paliashdr->posedata);
verts += posenum * paliashdr->poseverts;
order = (int *)((byte *)paliashdr + paliashdr->commands);
height = -lheight + 1.0;
while (1) {
// get the vertex count and primitive type
count = *order++;
if (!count)
break; // done
if (count < 0) {
count = -count;
glBegin (GL_TRIANGLE_FAN);
} else {
glBegin (GL_TRIANGLE_STRIP);
}
do {
// texture coordinates come from the draw list
// (skipped for shadows) glTexCoord2fv ((float *)order);
order += 2;
// normals and vertexes come from the frame list
point[0] = verts->v[0] * paliashdr->scale[0] + paliashdr->scale_origin[0];
point[1] = verts->v[1] * paliashdr->scale[1] + paliashdr->scale_origin[1];
point[2] = verts->v[2] * paliashdr->scale[2] + paliashdr->scale_origin[2];
point[0] -= shadevector[0]*(point[2]+lheight);
point[1] -= shadevector[1]*(point[2]+lheight);
point[2] = height;
// height -= 0.001;
glVertex3fv (point);
verts++;
} while (--count);
glEnd ();
}
}
/*
R_SetupAliasFrame
*/
void R_SetupAliasFrame (int frame, aliashdr_t *paliashdr) {
int pose, numposes;
float interval;
if ((frame >= paliashdr->numframes) || (frame < 0)) {
Con_DPrintf ("R_AliasSetupFrame: no such frame %d\n", frame);
frame = 0;
}
pose = paliashdr->frames[frame].firstpose;
numposes = paliashdr->frames[frame].numposes;
if (numposes > 1) {
interval = paliashdr->frames[frame].interval;
pose += (int)(cl.time / interval) % numposes;
}
GL_DrawAliasFrame (paliashdr, pose);
}
/*
R_DrawAliasModel
*/
void
R_DrawAliasModel (entity_t *e) {
int i;
int lnum;
vec3_t dist;
float add;
model_t *clmodel;
vec3_t mins, maxs;
aliashdr_t *paliashdr;
float an;
int anim;
clmodel = currententity->model;
VectorAdd (currententity->origin, clmodel->mins, mins);
VectorAdd (currententity->origin, clmodel->maxs, maxs);
if (R_CullBox (mins, maxs))
return;
VectorCopy (currententity->origin, r_entorigin);
VectorSubtract (r_origin, r_entorigin, modelorg);
/*
get lighting information
*/
ambientlight = shadelight = R_LightPoint (currententity->origin);
// allways give the gun some light
if (e == &cl.viewent && ambientlight < 24)
ambientlight = shadelight = 24;
for (lnum=0 ; lnum<MAX_DLIGHTS ; lnum++) {
if (cl_dlights[lnum].die >= cl.time) {
VectorSubtract (currententity->origin,
cl_dlights[lnum].origin,
dist);
add = cl_dlights[lnum].radius - Length(dist);
if (add > 0) {
ambientlight += add;
//ZOID models should be affected by dlights as well
shadelight += add;
}
}
}
// clamp lighting so it doesn't overbright as much
if (ambientlight > 128)
ambientlight = 128;
if (ambientlight + shadelight > 192)
shadelight = 192 - ambientlight;
// ZOID: never allow players to go totally black
#ifdef QUAKEWORLD
if (!strcmp(clmodel->name, "progs/player.mdl")) {
#else
i = currententity - cl_entities;
// if (i >= 1 && i <= cl.maxclients && !strcmp (currententity->model->name, "progs/player.mdl")) {
if (i >= 1 && i <= cl.maxclients) {
#endif
if (ambientlight < 8) {
ambientlight = shadelight = 8;
}
} else if (!strcmp (clmodel->name, "progs/flame2.mdl")
|| !strcmp (clmodel->name, "progs/flame.mdl") )
// HACK HACK HACK -- no fullbright colors, so make torches full light
ambientlight = shadelight = 256;
shadedots = r_avertexnormal_dots[((int)(e->angles[1] * (SHADEDOT_QUANT / 360.0))) & (SHADEDOT_QUANT - 1)];
shadelight = shadelight / 200.0;
an = e->angles[1]/180*M_PI;
shadevector[0] = cos(-an);
shadevector[1] = sin(-an);
shadevector[2] = 1;
VectorNormalize (shadevector);
/*
locate the proper data
*/
paliashdr = (aliashdr_t *)Mod_Extradata (currententity->model);
c_alias_polys += paliashdr->numtris;
/*
draw all the triangles
*/
GL_DisableMultitexture();
glPushMatrix ();
R_RotateForEntity (e);
if (!strcmp (clmodel->name, "progs/eyes.mdl") && gl_doubleeyes->value) {
glTranslatef (paliashdr->scale_origin[0], paliashdr->scale_origin[1], paliashdr->scale_origin[2] - (22 + 8));
// double size of eyes, since they are really hard to see in gl
glScalef (paliashdr->scale[0]*2, paliashdr->scale[1]*2, paliashdr->scale[2]*2);
} 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.
#ifdef QUAKEWORLD
if (currententity->scoreboard && !gl_nocolors->value) {
i = currententity->scoreboard - cl.players;
if (!currententity->scoreboard->skin) {
Skin_Find(currententity->scoreboard);
R_TranslatePlayerSkin(i);
}
if (i >= 0 && i<MAX_CLIENTS) {
GL_Bind(playertextures + i);
}
}
#else
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"))
if (i >= 1 && i<=cl.maxclients)
GL_Bind(playertextures - 1 + i);
}
#endif
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;
#ifdef QUAKEWORLD
if (!r_drawviewmodel->value || !Cam_DrawViewModel())
return;
#else
if (!r_drawviewmodel->value)
return;
if (cl_chasecam->value)
return;
#endif
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;
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
#ifdef QUAKEWORLD
r_fullbright->value = 0;
r_lightmap->value = 0;
if (!atoi(Info_ValueForKey(cl.serverinfo, "watervis")))
r_wateralpha->value = 1;
#else
if (cl.maxclients > 1)
Cvar_Set ("r_fullbright", "0");
#endif
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;
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);
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 ) {
static int l;
if (gl_ztrick->value)
{
static int trickframe;
if (gl_clear->value)
{
if (l != (int)r_clearcolor->value)
{
l = (int)r_clearcolor->value;
glClearColor (host_basepal[l*3]/255.0,
host_basepal[l*3+1]/255.0,
host_basepal[l*3+2]/255.0,
1.0);
}
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);
}
extern cvar_t *crosshaircolor;
/*
R_RenderView
r_refdef must be set before the first call
*/
void
R_RenderView ( void ) {
double time1 = 0, time2 = 0;
// Fixme: the last argument should be a cvar... r_fog_gamma
GLfloat colors[4] = {(GLfloat) 1.0, (GLfloat) 1.0, (GLfloat) 1, (GLfloat) 0.1};
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;
}
if (gl_finish->value)
glFinish ();
R_Clear ();
// render normal view
/*** Render Volumetric Fog ***/
if(r_volfog->value)
{
R_RenderScene ();
R_DrawViewModel ();
glClear(GL_STENCIL_BUFFER_BIT);
//glColorMask(GL_FALSE);
glStencilFunc(GL_ALWAYS, 1, 1);
glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
//glEnable(GL_STENCIL_TEST);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
glFogi (GL_FOG_MODE, GL_EXP2);
glFogfv (GL_FOG_COLOR, colors);
// fixme: GL_FOG_DENSITY should have r_volfog_density var
glFogf (GL_FOG_DENSITY, r_volfog->value);
glEnable(GL_FOG);
R_DrawWaterSurfaces();
glDisable(GL_FOG);
glStencilFunc(GL_EQUAL, 1, 1);
glStencilMask(GL_FALSE);
glDisable(GL_DEPTH_TEST);
}
/*** Depth fog code ***/
else if (r_fog->value)
{ // FIXME: would be nice if the user could select what fogmode... (r_fog_mode)
glFogi (GL_FOG_MODE, GL_EXP2);
glFogfv (GL_FOG_COLOR, colors);
glFogf (GL_FOG_DENSITY, (GLfloat) r_fog->value);
// glFogi (GL_FOG_MODE, GL_LINEAR);
// glFogfv (GL_FOG_COLOR, colors);
// glFogf (GL_FOG_START, 300.0);
// glFogf (GL_FOG_END, 1500.0);
// glFogf (GL_FOG_DENSITY, 0.2);
glEnable (GL_FOG);
R_RenderScene ();
R_DrawViewModel ();
R_DrawWaterSurfaces ();
glDisable(GL_FOG);
}
/*** Regular rendering code ***/
else
{
R_RenderScene ();
R_DrawViewModel ();
R_DrawWaterSurfaces ();
}
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);
}
}
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