ref: 468277a38c028f5f00c89379c1cc705d127e9e84
dir: /ref/r_main.c/
/*
Copyright (C) 1997-2001 Id Software, Inc.
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 the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <u.h>
#include <libc.h>
#include <stdio.h>
#include "../dat.h"
#include "../fns.h"
viddef_t vid;
refimport_t ri;
unsigned d_8to24table[256];
entity_t r_worldentity;
char skyname[MAX_QPATH];
float skyrotate;
vec3_t skyaxis;
image_t *sky_images[6];
refdef_t r_newrefdef;
model_t *currentmodel;
model_t *r_worldmodel;
byte r_warpbuffer[WARP_WIDTH * WARP_HEIGHT];
swstate_t sw_state;
void *colormap;
vec3_t viewlightvec;
alight_t r_viewlighting = {128, 192, viewlightvec};
float r_time1;
int r_numallocatededges;
float r_aliasuvscale = 1.0;
int r_outofsurfaces;
int r_outofedges;
qboolean r_dowarp;
mvertex_t *r_pcurrentvertbase;
int c_surf;
int r_maxsurfsseen, r_maxedgesseen, r_cnumsurfs;
qboolean r_surfsonstack;
int r_clipflags;
//
// view origin
//
vec3_t vup, base_vup;
vec3_t vpn, base_vpn;
vec3_t vright, base_vright;
vec3_t r_origin;
//
// screen size info
//
oldrefdef_t r_refdef;
float xcenter, ycenter;
float xscale, yscale;
float xscaleinv, yscaleinv;
float xscaleshrink, yscaleshrink;
float aliasxscale, aliasyscale, aliasxcenter, aliasycenter;
int r_screenwidth;
float verticalFieldOfView;
float xOrigin, yOrigin;
mplane_t screenedge[4];
//
// refresh flags
//
int r_framecount = 1; // so frame counts initialized to 0 don't match
int r_visframecount;
int d_spanpixcount;
int r_polycount;
int r_drawnpolycount;
int r_wholepolycount;
int *pfrustum_indexes[4];
int r_frustum_indexes[4*6];
mleaf_t *r_viewleaf;
int r_viewcluster, r_oldviewcluster;
image_t *r_notexture_mip;
float da_time1, da_time2, dp_time1, dp_time2, db_time1, db_time2, rw_time1, rw_time2;
float se_time1, se_time2, de_time1, de_time2;
void R_MarkLeaves (void);
cvar_t *r_lefthand;
cvar_t *sw_aliasstats;
cvar_t *sw_allow_modex;
cvar_t *sw_clearcolor;
cvar_t *sw_drawflat;
cvar_t *sw_draworder;
cvar_t *sw_maxedges;
cvar_t *sw_maxsurfs;
cvar_t *sw_mode;
cvar_t *sw_reportedgeout;
cvar_t *sw_reportsurfout;
cvar_t *sw_stipplealpha;
cvar_t *sw_surfcacheoverride;
cvar_t *sw_waterwarp;
cvar_t *r_drawworld;
cvar_t *r_drawentities;
cvar_t *r_dspeeds;
cvar_t *r_fullbright;
cvar_t *r_lerpmodels;
cvar_t *r_novis;
cvar_t *r_speeds;
cvar_t *r_lightlevel; //FIXME HACK
cvar_t *vid_fullscreen;
cvar_t *vid_gamma;
//PGM
cvar_t *sw_lockpvs;
//PGM
#define STRINGER(x) "x"
// r_vars.c
// all global and static refresh variables are collected in a contiguous block
// to avoid cache conflicts.
//-------------------------------------------------------
// global refresh variables
//-------------------------------------------------------
// FIXME: make into one big structure, like cl or sv
// FIXME: do separately for refresh engine and driver
// d_vars.c
// all global and static refresh variables are collected in a contiguous block
// to avoid cache conflicts.
//-------------------------------------------------------
// global refresh variables
//-------------------------------------------------------
// FIXME: make into one big structure, like cl or sv
// FIXME: do separately for refresh engine and driver
float d_sdivzstepu, d_tdivzstepu, d_zistepu;
float d_sdivzstepv, d_tdivzstepv, d_zistepv;
float d_sdivzorigin, d_tdivzorigin, d_ziorigin;
fixed16_t sadjust, tadjust, bbextents, bbextentt;
pixel_t *cacheblock;
int cachewidth;
pixel_t *d_viewbuffer;
short *d_pzbuffer;
unsigned int d_zrowbytes;
unsigned int d_zwidth;
byte r_notexture_buffer[1024];
/*
==================
R_InitTextures
==================
*/
void R_InitTextures (void)
{
int x,y, m;
byte *dest;
// create a simple checkerboard texture for the default
r_notexture_mip = (image_t *)r_notexture_buffer;
r_notexture_mip->width = r_notexture_mip->height = 16;
r_notexture_mip->pixels[0] = &r_notexture_buffer[sizeof(image_t)];
r_notexture_mip->pixels[1] = r_notexture_mip->pixels[0] + 16*16;
r_notexture_mip->pixels[2] = r_notexture_mip->pixels[1] + 8*8;
r_notexture_mip->pixels[3] = r_notexture_mip->pixels[2] + 4*4;
for (m=0 ; m<4 ; m++)
{
dest = r_notexture_mip->pixels[m];
for (y=0 ; y< (16>>m) ; y++)
for (x=0 ; x< (16>>m) ; x++)
{
if ( (y< (8>>m) ) ^ (x< (8>>m) ) )
*dest++ = 0;
else
*dest++ = 0xff;
}
}
}
/*
================
R_InitTurb
================
*/
void R_InitTurb (void)
{
int i;
for (i=0 ; i<1280 ; i++)
{
sintable[i] = AMP + sin(i*3.14159*2/CYCLE)*AMP;
intsintable[i] = AMP2 + sin(i*3.14159*2/CYCLE)*AMP2; // AMP2, not 20
blanktable[i] = 0; //PGM
}
}
void R_ImageList_f( void );
void R_Register (void)
{
sw_aliasstats = ri.Cvar_Get ("sw_polymodelstats", "0", 0);
sw_allow_modex = ri.Cvar_Get( "sw_allow_modex", "1", CVAR_ARCHIVE );
sw_clearcolor = ri.Cvar_Get ("sw_clearcolor", "2", 0);
sw_drawflat = ri.Cvar_Get ("sw_drawflat", "0", 0);
sw_draworder = ri.Cvar_Get ("sw_draworder", "0", 0);
sw_maxedges = ri.Cvar_Get ("sw_maxedges", STRINGER(MAXSTACKSURFACES), 0);
sw_maxsurfs = ri.Cvar_Get ("sw_maxsurfs", "0", 0);
sw_mipcap = ri.Cvar_Get ("sw_mipcap", "0", 0);
sw_mipscale = ri.Cvar_Get ("sw_mipscale", "1", 0);
sw_reportedgeout = ri.Cvar_Get ("sw_reportedgeout", "0", 0);
sw_reportsurfout = ri.Cvar_Get ("sw_reportsurfout", "0", 0);
sw_stipplealpha = ri.Cvar_Get( "sw_stipplealpha", "0", CVAR_ARCHIVE );
sw_surfcacheoverride = ri.Cvar_Get ("sw_surfcacheoverride", "0", 0);
sw_waterwarp = ri.Cvar_Get ("sw_waterwarp", "1", 0);
sw_mode = ri.Cvar_Get( "sw_mode", "0", CVAR_ARCHIVE );
r_lefthand = ri.Cvar_Get( "hand", "0", CVAR_USERINFO | CVAR_ARCHIVE );
r_speeds = ri.Cvar_Get ("r_speeds", "0", 0);
r_fullbright = ri.Cvar_Get ("r_fullbright", "0", 0);
r_drawentities = ri.Cvar_Get ("r_drawentities", "1", 0);
r_drawworld = ri.Cvar_Get ("r_drawworld", "1", 0);
r_dspeeds = ri.Cvar_Get ("r_dspeeds", "0", 0);
r_lightlevel = ri.Cvar_Get ("r_lightlevel", "0", 0);
r_lerpmodels = ri.Cvar_Get( "r_lerpmodels", "1", 0 );
r_novis = ri.Cvar_Get( "r_novis", "0", 0 );
vid_fullscreen = ri.Cvar_Get( "vid_fullscreen", "0", CVAR_ARCHIVE );
vid_gamma = ri.Cvar_Get( "vid_gamma", "1.0", CVAR_ARCHIVE );
ri.Cmd_AddCommand ("modellist", Mod_Modellist_f);
ri.Cmd_AddCommand( "screenshot", R_ScreenShot_f );
ri.Cmd_AddCommand( "imagelist", R_ImageList_f );
sw_mode->modified = true; // force us to do mode specific stuff later
vid_gamma->modified = true; // force us to rebuild the gamma table later
//PGM
sw_lockpvs = ri.Cvar_Get ("sw_lockpvs", "0", 0);
//PGM
}
void R_UnRegister (void)
{
ri.Cmd_RemoveCommand( "screenshot" );
ri.Cmd_RemoveCommand ("modellist");
ri.Cmd_RemoveCommand( "imagelist" );
}
/*
===============
R_Init
===============
*/
qboolean R_Init( void *hInstance, void *wndProc )
{
R_InitImages ();
Mod_Init ();
Draw_InitLocal ();
R_InitTextures ();
R_InitTurb ();
view_clipplanes[0].leftedge = true;
view_clipplanes[1].rightedge = true;
view_clipplanes[1].leftedge = view_clipplanes[2].leftedge =
view_clipplanes[3].leftedge = false;
view_clipplanes[0].rightedge = view_clipplanes[2].rightedge =
view_clipplanes[3].rightedge = false;
r_refdef.xOrigin = XCENTERING;
r_refdef.yOrigin = YCENTERING;
r_aliasuvscale = 1.0;
R_Register ();
Draw_GetPalette ();
SWimp_Init( hInstance, wndProc );
// create the window
R_BeginFrame( 0 );
ri.Con_Printf (PRINT_ALL, "ref_soft version: "REF_VERSION"\n");
return true;
}
/*
===============
R_Shutdown
===============
*/
void R_Shutdown (void)
{
// free z buffer
if (d_pzbuffer)
{
free (d_pzbuffer);
d_pzbuffer = NULL;
}
// free surface cache
if (sc_base)
{
D_FlushCaches ();
free (sc_base);
sc_base = NULL;
}
// free colormap
if (vid.colormap)
{
free (vid.colormap);
vid.colormap = NULL;
}
R_UnRegister ();
Mod_FreeAll ();
R_ShutdownImages ();
SWimp_Shutdown();
}
/*
===============
R_NewMap
===============
*/
void R_NewMap (void)
{
r_viewcluster = -1;
r_cnumsurfs = sw_maxsurfs->value;
if (r_cnumsurfs <= MINSURFACES)
r_cnumsurfs = MINSURFACES;
if (r_cnumsurfs > NUMSTACKSURFACES)
{
surfaces = malloc (r_cnumsurfs * sizeof(surf_t));
surface_p = surfaces;
surf_max = &surfaces[r_cnumsurfs];
r_surfsonstack = false;
// surface 0 doesn't really exist; it's just a dummy because index 0
// is used to indicate no edge attached to surface
surfaces--;
R_SurfacePatch ();
}
else
{
r_surfsonstack = true;
}
r_maxedgesseen = 0;
r_maxsurfsseen = 0;
r_numallocatededges = sw_maxedges->value;
if (r_numallocatededges < MINEDGES)
r_numallocatededges = MINEDGES;
if (r_numallocatededges <= NUMSTACKEDGES)
{
auxedges = NULL;
}
else
{
auxedges = malloc (r_numallocatededges * sizeof(edge_t));
}
}
/*
===============
R_MarkLeaves
Mark the leaves and nodes that are in the PVS for the current
cluster
===============
*/
void R_MarkLeaves (void)
{
byte *vis;
mnode_t *node;
int i;
mleaf_t *leaf;
int cluster;
if (r_oldviewcluster == r_viewcluster && !r_novis->value && r_viewcluster != -1)
return;
// development aid to let you run around and see exactly where
// the pvs ends
if (sw_lockpvs->value)
return;
r_visframecount++;
r_oldviewcluster = r_viewcluster;
if (r_novis->value || r_viewcluster == -1 || !r_worldmodel->vis)
{
// mark everything
for (i=0 ; i<r_worldmodel->numleafs ; i++)
r_worldmodel->leafs[i].visframe = r_visframecount;
for (i=0 ; i<r_worldmodel->numnodes ; i++)
r_worldmodel->nodes[i].visframe = r_visframecount;
return;
}
vis = Mod_ClusterPVS (r_viewcluster, r_worldmodel);
for (i=0,leaf=r_worldmodel->leafs ; i<r_worldmodel->numleafs ; i++, leaf++)
{
cluster = leaf->cluster;
if (cluster == -1)
continue;
if (vis[cluster>>3] & (1<<(cluster&7)))
{
node = (mnode_t *)leaf;
do
{
if (node->visframe == r_visframecount)
break;
node->visframe = r_visframecount;
node = node->parent;
} while (node);
}
}
/*
for (i=0 ; i<r_worldmodel->vis->numclusters ; i++)
{
if (vis[i>>3] & (1<<(i&7)))
{
node = (mnode_t *)&r_worldmodel->leafs[i]; // FIXME: cluster
do
{
if (node->visframe == r_visframecount)
break;
node->visframe = r_visframecount;
node = node->parent;
} while (node);
}
}
*/
}
/*
** R_DrawNullModel
**
** IMPLEMENT THIS!
*/
void R_DrawNullModel( void )
{
}
/*
=============
R_DrawEntitiesOnList
=============
*/
void R_DrawEntitiesOnList (void)
{
int i;
qboolean translucent_entities = false;
if (!r_drawentities->value)
return;
// all bmodels have already been drawn by the edge list
for (i=0 ; i<r_newrefdef.num_entities ; i++)
{
currententity = &r_newrefdef.entities[i];
if ( currententity->flags & RF_TRANSLUCENT )
{
translucent_entities = true;
continue;
}
if ( currententity->flags & RF_BEAM )
{
modelorg[0] = -r_origin[0];
modelorg[1] = -r_origin[1];
modelorg[2] = -r_origin[2];
VectorCopy( vec3_origin, r_entorigin );
R_DrawBeam( currententity );
}
else
{
currentmodel = currententity->model;
if (!currentmodel)
{
R_DrawNullModel();
continue;
}
VectorCopy (currententity->origin, r_entorigin);
VectorSubtract (r_origin, r_entorigin, modelorg);
switch (currentmodel->type)
{
case mod_sprite:
R_DrawSprite ();
break;
case mod_alias:
R_AliasDrawModel ();
break;
default:
break;
}
}
}
if ( !translucent_entities )
return;
for (i=0 ; i<r_newrefdef.num_entities ; i++)
{
currententity = &r_newrefdef.entities[i];
if ( !( currententity->flags & RF_TRANSLUCENT ) )
continue;
if ( currententity->flags & RF_BEAM )
{
modelorg[0] = -r_origin[0];
modelorg[1] = -r_origin[1];
modelorg[2] = -r_origin[2];
VectorCopy( vec3_origin, r_entorigin );
R_DrawBeam( currententity );
}
else
{
currentmodel = currententity->model;
if (!currentmodel)
{
R_DrawNullModel();
continue;
}
VectorCopy (currententity->origin, r_entorigin);
VectorSubtract (r_origin, r_entorigin, modelorg);
switch (currentmodel->type)
{
case mod_sprite:
R_DrawSprite ();
break;
case mod_alias:
R_AliasDrawModel ();
break;
default:
break;
}
}
}
}
/*
=============
R_BmodelCheckBBox
=============
*/
int R_BmodelCheckBBox (float *minmaxs)
{
int i, *pindex, clipflags;
vec3_t acceptpt, rejectpt;
float d;
clipflags = 0;
for (i=0 ; i<4 ; i++)
{
// generate accept and reject points
// FIXME: do with fast look-ups or integer tests based on the sign bit
// of the floating point values
pindex = pfrustum_indexes[i];
rejectpt[0] = minmaxs[pindex[0]];
rejectpt[1] = minmaxs[pindex[1]];
rejectpt[2] = minmaxs[pindex[2]];
d = DotProduct (rejectpt, view_clipplanes[i].normal);
d -= view_clipplanes[i].dist;
if (d <= 0)
return BMODEL_FULLY_CLIPPED;
acceptpt[0] = minmaxs[pindex[3+0]];
acceptpt[1] = minmaxs[pindex[3+1]];
acceptpt[2] = minmaxs[pindex[3+2]];
d = DotProduct (acceptpt, view_clipplanes[i].normal);
d -= view_clipplanes[i].dist;
if (d <= 0)
clipflags |= (1<<i);
}
return clipflags;
}
/*
===================
R_FindTopnode
Find the first node that splits the given box
===================
*/
mnode_t *R_FindTopnode (vec3_t mins, vec3_t maxs)
{
mplane_t *splitplane;
int sides;
mnode_t *node;
node = r_worldmodel->nodes;
while (1)
{
if (node->visframe != r_visframecount)
return NULL; // not visible at all
if (node->contents != CONTENTS_NODE)
{
if (node->contents != CONTENTS_SOLID)
return node; // we've reached a non-solid leaf, so it's
// visible and not BSP clipped
return NULL; // in solid, so not visible
}
splitplane = node->plane;
sides = BOX_ON_PLANE_SIDE(mins, maxs, (cplane_t *)splitplane);
if (sides == 3)
return node; // this is the splitter
// not split yet; recurse down the contacted side
if (sides & 1)
node = node->children[0];
else
node = node->children[1];
}
}
/*
=============
RotatedBBox
Returns an axially aligned box that contains the input box at the given rotation
=============
*/
void RotatedBBox (vec3_t mins, vec3_t maxs, vec3_t angles, vec3_t tmins, vec3_t tmaxs)
{
vec3_t tmp, v;
int i, j;
vec3_t forward, right, up;
if (!angles[0] && !angles[1] && !angles[2])
{
VectorCopy (mins, tmins);
VectorCopy (maxs, tmaxs);
return;
}
for (i=0 ; i<3 ; i++)
{
tmins[i] = 99999;
tmaxs[i] = -99999;
}
AngleVectors (angles, forward, right, up);
for ( i = 0; i < 8; i++ )
{
if ( i & 1 )
tmp[0] = mins[0];
else
tmp[0] = maxs[0];
if ( i & 2 )
tmp[1] = mins[1];
else
tmp[1] = maxs[1];
if ( i & 4 )
tmp[2] = mins[2];
else
tmp[2] = maxs[2];
VectorScale (forward, tmp[0], v);
VectorMA (v, -tmp[1], right, v);
VectorMA (v, tmp[2], up, v);
for (j=0 ; j<3 ; j++)
{
if (v[j] < tmins[j])
tmins[j] = v[j];
if (v[j] > tmaxs[j])
tmaxs[j] = v[j];
}
}
}
/*
=============
R_DrawBEntitiesOnList
=============
*/
void R_DrawBEntitiesOnList (void)
{
int i, clipflags;
vec3_t oldorigin;
vec3_t mins, maxs;
float minmaxs[6];
mnode_t *topnode;
if (!r_drawentities->value)
return;
VectorCopy (modelorg, oldorigin);
insubmodel = true;
r_dlightframecount = r_framecount;
for (i=0 ; i<r_newrefdef.num_entities ; i++)
{
currententity = &r_newrefdef.entities[i];
currentmodel = currententity->model;
if (!currentmodel)
continue;
if (currentmodel->nummodelsurfaces == 0)
continue; // clip brush only
if ( currententity->flags & RF_BEAM )
continue;
if (currentmodel->type != mod_brush)
continue;
// see if the bounding box lets us trivially reject, also sets
// trivial accept status
RotatedBBox (currentmodel->mins, currentmodel->maxs,
currententity->angles, mins, maxs);
VectorAdd (mins, currententity->origin, minmaxs);
VectorAdd (maxs, currententity->origin, (minmaxs+3));
clipflags = R_BmodelCheckBBox (minmaxs);
if (clipflags == BMODEL_FULLY_CLIPPED)
continue; // off the edge of the screen
topnode = R_FindTopnode (minmaxs, minmaxs+3);
if (!topnode)
continue; // no part in a visible leaf
VectorCopy (currententity->origin, r_entorigin);
VectorSubtract (r_origin, r_entorigin, modelorg);
r_pcurrentvertbase = currentmodel->vertexes;
// FIXME: stop transforming twice
R_RotateBmodel ();
// calculate dynamic lighting for bmodel
R_PushDlights (currentmodel);
if (topnode->contents == CONTENTS_NODE)
{
// not a leaf; has to be clipped to the world BSP
r_clipflags = clipflags;
R_DrawSolidClippedSubmodelPolygons (currentmodel, topnode);
}
else
{
// falls entirely in one leaf, so we just put all the
// edges in the edge list and let 1/z sorting handle
// drawing order
R_DrawSubmodelPolygons (currentmodel, clipflags, topnode);
}
// put back world rotation and frustum clipping
// FIXME: R_RotateBmodel should just work off base_vxx
VectorCopy (base_vpn, vpn);
VectorCopy (base_vup, vup);
VectorCopy (base_vright, vright);
VectorCopy (oldorigin, modelorg);
R_TransformFrustum ();
}
insubmodel = false;
}
/*
================
R_EdgeDrawing
================
*/
void R_EdgeDrawing (void)
{
edge_t ledges[NUMSTACKEDGES +
((CACHE_SIZE - 1) / sizeof(edge_t)) + 1];
surf_t lsurfs[NUMSTACKSURFACES +
((CACHE_SIZE - 1) / sizeof(surf_t)) + 1];
if ( r_newrefdef.rdflags & RDF_NOWORLDMODEL )
return;
if (auxedges)
{
r_edges = auxedges;
}
else
{
r_edges = (edge_t *)
(((uintptr)&ledges[0] + CACHE_SIZE - 1) & ~(CACHE_SIZE - 1));
}
if (r_surfsonstack)
{
surfaces = (surf_t *)
(((uintptr)&lsurfs[0] + CACHE_SIZE - 1) & ~(CACHE_SIZE - 1));
surf_max = &surfaces[r_cnumsurfs];
// surface 0 doesn't really exist; it's just a dummy because index 0
// is used to indicate no edge attached to surface
surfaces--;
R_SurfacePatch ();
}
R_BeginEdgeFrame ();
if (r_dspeeds->value)
{
rw_time1 = Sys_Milliseconds ();
}
R_RenderWorld ();
if (r_dspeeds->value)
{
rw_time2 = Sys_Milliseconds ();
db_time1 = rw_time2;
}
R_DrawBEntitiesOnList ();
if (r_dspeeds->value)
{
db_time2 = Sys_Milliseconds ();
se_time1 = db_time2;
}
R_ScanEdges ();
}
//=======================================================================
/*
=============
R_CalcPalette
=============
*/
void R_CalcPalette (void)
{
static qboolean modified;
byte palette[256][4], *in, *out;
int i, j;
float alpha, one_minus_alpha;
vec3_t premult;
int v;
alpha = r_newrefdef.blend[3];
if (alpha <= 0)
{
if (modified)
{ // set back to default
modified = false;
R_GammaCorrectAndSetPalette( ( const unsigned char * ) d_8to24table );
return;
}
return;
}
modified = true;
if (alpha > 1)
alpha = 1;
premult[0] = r_newrefdef.blend[0]*alpha*255;
premult[1] = r_newrefdef.blend[1]*alpha*255;
premult[2] = r_newrefdef.blend[2]*alpha*255;
one_minus_alpha = (1.0 - alpha);
in = (byte *)d_8to24table;
out = palette[0];
for (i=0 ; i<256 ; i++, in+=4, out+=4)
{
for (j=0 ; j<3 ; j++)
{
v = premult[j] + one_minus_alpha * in[j];
if (v > 255)
v = 255;
out[j] = v;
}
out[3] = 255;
}
R_GammaCorrectAndSetPalette( ( const unsigned char * ) palette[0] );
// SWimp_SetPalette( palette[0] );
}
//=======================================================================
void R_SetLightLevel (void)
{
vec3_t light;
if ((r_newrefdef.rdflags & RDF_NOWORLDMODEL) || (!r_drawentities->value) || (!currententity))
{
r_lightlevel->value = 150.0;
return;
}
// save off light value for server to look at (BIG HACK!)
R_LightPoint (r_newrefdef.vieworg, light);
r_lightlevel->value = 150.0 * light[0];
}
/*
@@@@@@@@@@@@@@@@
R_RenderFrame
@@@@@@@@@@@@@@@@
*/
void R_RenderFrame (refdef_t *fd)
{
r_newrefdef = *fd;
if (!r_worldmodel && !( r_newrefdef.rdflags & RDF_NOWORLDMODEL ) )
ri.Sys_Error (ERR_FATAL,"R_RenderView: NULL worldmodel");
VectorCopy (fd->vieworg, r_refdef.vieworg);
VectorCopy (fd->viewangles, r_refdef.viewangles);
if (r_speeds->value || r_dspeeds->value)
r_time1 = Sys_Milliseconds ();
R_SetupFrame ();
R_MarkLeaves (); // done here so we know if we're in water
R_PushDlights (r_worldmodel);
R_EdgeDrawing ();
if (r_dspeeds->value)
{
se_time2 = Sys_Milliseconds ();
de_time1 = se_time2;
}
R_DrawEntitiesOnList ();
if (r_dspeeds->value)
{
de_time2 = Sys_Milliseconds ();
dp_time1 = Sys_Milliseconds ();
}
R_DrawParticles ();
if (r_dspeeds->value)
dp_time2 = Sys_Milliseconds ();
R_DrawAlphaSurfaces();
R_SetLightLevel ();
if (r_dowarp)
D_WarpScreen ();
if (r_dspeeds->value)
da_time1 = Sys_Milliseconds ();
if (r_dspeeds->value)
da_time2 = Sys_Milliseconds ();
R_CalcPalette ();
if (sw_aliasstats->value)
R_PrintAliasStats ();
if (r_speeds->value)
R_PrintTimes ();
if (r_dspeeds->value)
R_PrintDSpeeds ();
if (sw_reportsurfout->value && r_outofsurfaces)
ri.Con_Printf (PRINT_ALL,"Short %d surfaces\n", r_outofsurfaces);
if (sw_reportedgeout->value && r_outofedges)
ri.Con_Printf (PRINT_ALL,"Short roughly %d edges\n", r_outofedges * 2 / 3);
}
/*
** R_InitGraphics
*/
void R_InitGraphics( int width, int height )
{
vid.width = width;
vid.height = height;
// free z buffer
if ( d_pzbuffer )
{
free( d_pzbuffer );
d_pzbuffer = NULL;
}
// free surface cache
if ( sc_base )
{
D_FlushCaches ();
free( sc_base );
sc_base = NULL;
}
d_pzbuffer = malloc(vid.width*vid.height*2);
R_InitCaches ();
R_GammaCorrectAndSetPalette( ( const unsigned char *) d_8to24table );
}
/*
** R_BeginFrame
*/
void R_BeginFrame( float /*camera_separation*/ )
{
extern void Draw_BuildGammaTable( void );
/*
** rebuild the gamma correction palette if necessary
*/
if ( vid_gamma->modified )
{
Draw_BuildGammaTable();
R_GammaCorrectAndSetPalette( ( const unsigned char * ) d_8to24table );
vid_gamma->modified = false;
}
while ( sw_mode->modified || vid_fullscreen->modified )
{
rserr_t err;
/*
** if this returns rserr_invalid_fullscreen then it set the mode but not as a
** fullscreen mode, e.g. 320x200 on a system that doesn't support that res
*/
if ( ( err = SWimp_SetMode( &vid.width, &vid.height, sw_mode->value, vid_fullscreen->value ) ) == rserr_ok )
{
R_InitGraphics( vid.width, vid.height );
sw_state.prev_mode = sw_mode->value;
vid_fullscreen->modified = false;
sw_mode->modified = false;
}
else
{
if ( err == rserr_invalid_mode )
{
ri.Cvar_SetValue( "sw_mode", sw_state.prev_mode );
ri.Con_Printf( PRINT_ALL, "ref_soft::R_BeginFrame() - could not set mode\n" );
}
else if ( err == rserr_invalid_fullscreen )
{
R_InitGraphics( vid.width, vid.height );
ri.Cvar_SetValue( "vid_fullscreen", 0);
ri.Con_Printf( PRINT_ALL, "ref_soft::R_BeginFrame() - fullscreen unavailable in this mode\n" );
sw_state.prev_mode = sw_mode->value;
// vid_fullscreen->modified = false;
// sw_mode->modified = false;
}
else
{
ri.Sys_Error( ERR_FATAL, "ref_soft::R_BeginFrame() - catastrophic mode change failure\n" );
}
}
}
}
/*
** R_GammaCorrectAndSetPalette
*/
void R_GammaCorrectAndSetPalette( const unsigned char *palette )
{
int i;
for ( i = 0; i < 256; i++ )
{
sw_state.currentpalette[i*4+0] = sw_state.gammatable[palette[i*4+0]];
sw_state.currentpalette[i*4+1] = sw_state.gammatable[palette[i*4+1]];
sw_state.currentpalette[i*4+2] = sw_state.gammatable[palette[i*4+2]];
}
SWimp_SetPalette( sw_state.currentpalette );
}
/*
** R_CinematicSetPalette
*/
void R_CinematicSetPalette( const unsigned char *palette )
{
byte palette32[1024];
int i, j, w;
int *d;
// clear screen to black to avoid any palette flash
w = abs(vid.rowbytes)>>2; // stupid negative pitch win32 stuff...
for (i=0 ; i<vid.height ; i++)
{
d = (int *)(vid.buffer + i*vid.rowbytes);
for (j=0 ; j<w ; j++)
d[j] = 0;
}
// flush it to the screen
SWimp_EndFrame ();
if ( palette )
{
for ( i = 0; i < 256; i++ )
{
palette32[i*4+0] = palette[i*3+0];
palette32[i*4+1] = palette[i*3+1];
palette32[i*4+2] = palette[i*3+2];
palette32[i*4+3] = 0xFF;
}
R_GammaCorrectAndSetPalette( palette32 );
}
else
{
R_GammaCorrectAndSetPalette( ( const unsigned char * ) d_8to24table );
}
}
/*
================
Draw_BuildGammaTable
================
*/
void Draw_BuildGammaTable (void)
{
int i, inf;
float g;
g = vid_gamma->value;
if (g == 1.0)
{
for (i=0 ; i<256 ; i++)
sw_state.gammatable[i] = i;
return;
}
for (i=0 ; i<256 ; i++)
{
inf = 255 * pow ( (i+0.5)/255.5 , g ) + 0.5;
if (inf < 0)
inf = 0;
if (inf > 255)
inf = 255;
sw_state.gammatable[i] = inf;
}
}
/*
** R_DrawBeam
*/
void R_DrawBeam( entity_t *e )
{
#define NUM_BEAM_SEGS 6
int i;
vec3_t perpvec;
vec3_t direction, normalized_direction;
vec3_t start_points[NUM_BEAM_SEGS], end_points[NUM_BEAM_SEGS];
vec3_t oldorigin, origin;
oldorigin[0] = e->oldorigin[0];
oldorigin[1] = e->oldorigin[1];
oldorigin[2] = e->oldorigin[2];
origin[0] = e->origin[0];
origin[1] = e->origin[1];
origin[2] = e->origin[2];
normalized_direction[0] = direction[0] = oldorigin[0] - origin[0];
normalized_direction[1] = direction[1] = oldorigin[1] - origin[1];
normalized_direction[2] = direction[2] = oldorigin[2] - origin[2];
if ( VectorNormalize( normalized_direction ) == 0 )
return;
PerpendicularVector( perpvec, normalized_direction );
VectorScale( perpvec, e->frame / 2, perpvec );
for ( i = 0; i < NUM_BEAM_SEGS; i++ )
{
RotatePointAroundVector( start_points[i], normalized_direction, perpvec, (360.0/NUM_BEAM_SEGS)*i );
VectorAdd( start_points[i], origin, start_points[i] );
VectorAdd( start_points[i], direction, end_points[i] );
}
for ( i = 0; i < NUM_BEAM_SEGS; i++ )
{
R_IMFlatShadedQuad( start_points[i],
end_points[i],
end_points[(i+1)%NUM_BEAM_SEGS],
start_points[(i+1)%NUM_BEAM_SEGS],
e->skinnum & 0xFF,
e->alpha );
}
}
//===================================================================
/*
============
R_SetSky
============
*/
// 3dstudio environment map names
char *suf[6] = {"rt", "bk", "lf", "ft", "up", "dn"};
int r_skysideimage[6] = {5, 2, 4, 1, 0, 3};
extern mtexinfo_t r_skytexinfo[6];
void R_SetSky (char *name, float rotate, vec3_t axis)
{
int i;
char pathname[MAX_QPATH];
strncpy (skyname, name, sizeof(skyname)-1);
skyrotate = rotate;
VectorCopy (axis, skyaxis);
for (i=0 ; i<6 ; i++)
{
Com_sprintf (pathname, sizeof(pathname), "env/%s%s.pcx", skyname, suf[r_skysideimage[i]]);
r_skytexinfo[i].image = R_FindImage (pathname, it_sky);
}
}
/*
===============
Draw_GetPalette
===============
*/
void Draw_GetPalette (void)
{
byte *pal, *out;
int i;
int r, g, b;
// get the palette and colormap
LoadPCX ("pics/colormap.pcx", &vid.colormap, &pal, NULL, NULL);
if (!vid.colormap)
ri.Sys_Error (ERR_FATAL, "Couldn't load pics/colormap.pcx");
vid.alphamap = vid.colormap + 64*256;
out = (byte *)d_8to24table;
for (i=0 ; i<256 ; i++, out+=4)
{
r = pal[i*3+0];
g = pal[i*3+1];
b = pal[i*3+2];
out[0] = r;
out[1] = g;
out[2] = b;
}
free (pal);
}
struct image_s *R_RegisterSkin (char *name);
/*
@@@@@@@@@@@@@@@@@@@@@
GetRefAPI
@@@@@@@@@@@@@@@@@@@@@
*/
refexport_t GetRefAPI (refimport_t rimp)
{
refexport_t re;
ri = rimp;
re.api_version = API_VERSION;
re.BeginRegistration = R_BeginRegistration;
re.RegisterModel = R_RegisterModel;
re.RegisterSkin = R_RegisterSkin;
re.RegisterPic = Draw_FindPic;
re.SetSky = R_SetSky;
re.EndRegistration = R_EndRegistration;
re.RenderFrame = R_RenderFrame;
re.DrawGetPicSize = Draw_GetPicSize;
re.DrawPic = Draw_Pic;
re.DrawStretchPic = Draw_StretchPic;
re.DrawChar = Draw_Char;
re.DrawTileClear = Draw_TileClear;
re.DrawFill = Draw_Fill;
re.DrawFadeScreen= Draw_FadeScreen;
re.DrawStretchRaw = Draw_StretchRaw;
re.Init = R_Init;
re.Shutdown = R_Shutdown;
re.CinematicSetPalette = R_CinematicSetPalette;
re.BeginFrame = R_BeginFrame;
re.EndFrame = SWimp_EndFrame;
re.AppActivate = SWimp_AppActivate;
Swap_Init ();
return re;
}