path: root/source/sw_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.

*/
// r_main.c

#include "sw_local.h"

viddef_t	vid;

unsigned	d_8to24table[256];

entity_t	r_worldentity;

refdef_t	r_newrefdef;
model_t		*currentmodel;

bsp_t		*r_worldmodel;

byte		r_warpbuffer[WARP_WIDTH * WARP_HEIGHT];

swstate_t sw_state;

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;

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;

cplane_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;

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	*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_reportedgeout;
cvar_t	*sw_reportsurfout;
cvar_t  *sw_stipplealpha;
cvar_t	*sw_surfcacheoverride;
cvar_t	*sw_waterwarp;

//Start Added by Lewey
// These flags allow you to turn SIRDS on and
// off from the console.
cvar_t	*sw_drawsird;
//End Added by Lewey

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	*vid_gamma;

//PGM
cvar_t	*sw_lockpvs;
//PGM

#if USE_ASM

void            *d_pcolormap;

#else // USE_ASM

// 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;

#endif	// !USE_ASM

int		sintable[CYCLE*2];
int		intsintable[CYCLE*2];
int		blanktable[CYCLE*2];		// PGM

/*
================
R_InitTurb
================
*/
void R_InitTurb (void)
{
	int		i;
	
	for (i=0 ; i<CYCLE*2 ; i++)
	{
		sintable[i] = AMP + sin(i*M_PI*2/CYCLE)*AMP;
		intsintable[i] = AMP2 + sin(i*M_PI*2/CYCLE)*AMP2;	// AMP2, not 20
		blanktable[i] = 0;			//PGM
	}
}

void D_SCDump_f (void);

void R_Register (void)
{
	sw_aliasstats = Cvar_Get ("sw_polymodelstats", "0", 0);
	sw_allow_modex = Cvar_Get( "sw_allow_modex", "1", CVAR_ARCHIVE );
	sw_clearcolor = Cvar_Get ("sw_clearcolor", "2", 0);
	sw_drawflat = Cvar_Get ("sw_drawflat", "0", CVAR_CHEAT);
	sw_draworder = Cvar_Get ("sw_draworder", "0", CVAR_CHEAT);
	sw_maxedges = Cvar_Get ("sw_maxedges", va( "%i", NUMSTACKEDGES ), 0);
	sw_maxsurfs = Cvar_Get ("sw_maxsurfs", va( "%i", NUMSTACKSURFACES ), 0);
	sw_mipcap = Cvar_Get ("sw_mipcap", "0", 0);
	sw_mipscale = Cvar_Get ("sw_mipscale", "1", 0);
	sw_reportedgeout = Cvar_Get ("sw_reportedgeout", "0", 0);
	sw_reportsurfout = Cvar_Get ("sw_reportsurfout", "0", 0);
	sw_stipplealpha = Cvar_Get( "sw_stipplealpha", "0", CVAR_ARCHIVE );
	sw_waterwarp = Cvar_Get ("sw_waterwarp", "1", 0);

	//Start Added by Lewey
	sw_drawsird = Cvar_Get ("sw_drawsird", "0", 0);
	//End Added by Lewey

	r_speeds = Cvar_Get ("r_speeds", "0", 0);
	r_fullbright = Cvar_Get ("r_fullbright", "0", CVAR_CHEAT);
	r_drawentities = Cvar_Get ("r_drawentities", "1", 0);
	r_drawworld = Cvar_Get ("r_drawworld", "1", CVAR_CHEAT);
	r_dspeeds = Cvar_Get ("r_dspeeds", "0", 0);
	r_lerpmodels = Cvar_Get( "r_lerpmodels", "1", 0 );
	r_novis = Cvar_Get( "r_novis", "0", 0 );

	vid_gamma = Cvar_Get( "vid_gamma", "1.0", CVAR_ARCHIVE|CVAR_FILES );

	Cmd_AddCommand( "screenshot", R_ScreenShot_f );
	Cmd_AddCommand( "scdump", D_SCDump_f );

	vid_gamma->modified = qtrue; // force us to rebuild the gamma table later

//PGM
	sw_lockpvs = Cvar_Get ("sw_lockpvs", "0", 0);
//PGM

}

void R_UnRegister (void)
{
	Cmd_RemoveCommand( "screenshot" );
	Cmd_RemoveCommand( "scdump" );
}

void R_ModeChanged( int width, int height, int flags, int rowbytes, void *pixels ) {
	vid.width = width;
	vid.height = height;
    vid.buffer = pixels;
    vid.rowbytes = rowbytes;

	sw_surfcacheoverride = Cvar_Get ("sw_surfcacheoverride", "0", 0);

    D_FlushCaches();

	if( d_pzbuffer ) {
		Z_Free( d_pzbuffer );
		d_pzbuffer = NULL;
	}

	// free surface cache
	if( sc_base ) {
		Z_Free( sc_base );
		sc_base = NULL;
	}

	d_pzbuffer = R_Mallocz( vid.width * vid.height * 2 );

	R_InitCaches();

	R_GammaCorrectAndSetPalette( ( const byte * ) d_8to24table );
}

/*
===============
R_Init
===============
*/
qboolean R_Init( qboolean total ) {
	Com_DPrintf( "R_Init( %i )\n", total );

	if( !total ) {
		R_InitImages();
		R_InitDraw();
		MOD_Init();
		return qtrue;
	}

	Com_Printf( "ref_soft " VERSION ", " __DATE__ "\n" );

// TODO: collect 386-specific code in one place
#if USE_ASM
	Sys_MakeCodeWriteable( ( long )R_EdgeCodeStart, ( long )R_EdgeCodeEnd - ( long )R_EdgeCodeStart );
	Sys_SetFPCW ();		// get bit masks for FPCW	(FIXME: is this USE_ASM?)
#endif	// USE_ASM

	r_aliasuvscale = 1.0;

	// create the window
	if( !VID_Init() ) {
		return qfalse;
	}

	R_Register();

	IMG_Init();
    MOD_Init();

	/* get the palette before we create the window */
	R_InitImages();

	R_InitSkyBox();

	view_clipplanes[0].leftedge = qtrue;
	view_clipplanes[1].rightedge = qtrue;
	view_clipplanes[1].leftedge =
    view_clipplanes[2].leftedge =
    view_clipplanes[3].leftedge = qfalse;
	view_clipplanes[0].rightedge =
    view_clipplanes[2].rightedge =
    view_clipplanes[3].rightedge = qfalse;

	r_refdef.xOrigin = XCENTERING;
	r_refdef.yOrigin = YCENTERING;

	R_InitTurb();

	R_GammaCorrectAndSetPalette( ( const byte * ) d_8to24table );

	return qtrue;
}

/*
===============
R_Shutdown
===============
*/
void R_Shutdown( qboolean total ) {
	Com_DPrintf( "R_Shutdown( %i )\n", total );

	D_FlushCaches();

	MOD_FreeAll();

	R_ShutdownImages();

    // free world model
    if( r_worldmodel ) {
        BSP_Free( r_worldmodel );
        r_worldmodel = NULL;
    }

	if( !total ) {
		return;
	}

	// free z buffer
	if( d_pzbuffer ) {
		Z_Free( d_pzbuffer );
		d_pzbuffer = NULL;
	}

	// free surface cache
	if( sc_base ) {
		Z_Free( sc_base );
		sc_base = NULL;
	}

	// free colormap
	if( vid.colormap ) {
		Z_Free( vid.colormap );
		vid.colormap = NULL;
	}

	R_UnRegister();

	IMG_Shutdown();
    MOD_Shutdown();

	VID_Shutdown();
}

/*
===============
R_NewMap
===============
*/
void R_NewMap (void)
{
	r_viewcluster = -1;

	r_cnumsurfs = sw_maxsurfs->integer;

	if (r_cnumsurfs <= MINSURFACES)
		r_cnumsurfs = MINSURFACES;

	if (r_cnumsurfs > NUMSTACKSURFACES)
	{
		surfaces = R_Mallocz (r_cnumsurfs * sizeof(surf_t));
		surface_p = surfaces;
		surf_max = &surfaces[r_cnumsurfs];
		r_surfsonstack = qfalse;
	// 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 = qtrue;
	}

	r_maxedgesseen = 0;
	r_maxsurfsseen = 0;

	r_numallocatededges = sw_maxedges->integer;

	if (r_numallocatededges < MINEDGES)
		r_numallocatededges = MINEDGES;

	if (r_numallocatededges <= NUMSTACKEDGES)
	{
		auxedges = NULL;
	}
	else
	{
		auxedges = R_Mallocz (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[MAX_MAP_VIS];
	mnode_t	*node;
	int		i;
	mleaf_t	*leaf;
	int		cluster;

	if (r_oldviewcluster == r_viewcluster && !r_novis->integer &&
            r_viewcluster != -1)
    {
		return;
    }
	
	// development aid to let you run around and see exactly where
	// the pvs ends
	if (sw_lockpvs->integer)
		return;

	r_visframecount++;
	r_oldviewcluster = r_viewcluster;

	if (r_novis->integer || 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;
	}

	BSP_ClusterVis (r_worldmodel, vis, r_viewcluster, DVIS_PVS);
	
	for (i=0,leaf=r_worldmodel->leafs ; i<r_worldmodel->numleafs ; i++, leaf++)
	{
		cluster = leaf->cluster;
		if (cluster == -1)
			continue;
		if (Q_IsBitSet( vis, cluster ))
		{
			node = (mnode_t *)leaf;
			do
			{
				if (node->visframe == r_visframecount)
					break;
				node->visframe = r_visframecount;
				node = node->parent;
			} while (node);
		}
	}

}

/*
** R_DrawNullModel
**
** IMPLEMENT THIS!
*/
static void R_DrawNullModel( void ) {
}

static int R_DrawEntities( int translucent ) {
	int			i;
	qboolean	translucent_entities = 0;

	// 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 ) {
			translucent_entities++;
			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 {
            if( currententity->model & 0x80000000 ) {
                continue;
            }
			currentmodel = MOD_ForHandle( currententity->model );
			if( !currentmodel ) {
				R_DrawNullModel();
				continue;
			}
			VectorCopy (currententity->origin, r_entorigin);
			VectorSubtract (r_origin, r_entorigin, modelorg);

			if( currentmodel->frames ) {
				R_AliasDrawModel();
            } else if( currentmodel->spriteframes ) {
				R_DrawSprite();
            } else {
                Com_Error( ERR_FATAL, "%s: bad model type", __func__ );
            }
		}
	}
    return translucent_entities;
}

/*
=============
R_DrawEntitiesOnList
=============
*/
static void R_DrawEntitiesOnList( void ) {
	int     	translucent_entities;

	if( !r_drawentities->integer )
		return;

    translucent_entities = R_DrawEntities( RF_TRANSLUCENT );
	if( translucent_entities ) {
        R_DrawEntities( 0 );
    }
}


/*
=============
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)
{
	int			sides;
	mnode_t *node;

	node = r_worldmodel->nodes;

	while (node->visframe == r_visframecount) {	
		if (!node->plane) {
			if (((mleaf_t * )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
		}
		
		sides = BoxOnPlaneSideFast(mins, maxs, node->plane);
		
		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];
	}

	return NULL;		// not visible at all
}


/*
=============
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, index, clipflags;
	vec3_t		oldorigin;
	vec3_t		mins, maxs;
	float		minmaxs[6];
	mnode_t		*topnode;
    mmodel_t    *model;

	if (!r_drawentities->value)
		return;

	VectorCopy (modelorg, oldorigin);
	insubmodel = qtrue;
	r_dlightframecount = r_framecount;

	for (i=0 ; i<r_newrefdef.num_entities ; i++)
	{
		currententity = &r_newrefdef.entities[i];
        index = currententity->model;
        if( !( index & 0x80000000 ) ) {
            continue;
        }
        index = ~index;
        if( index < 1 || index >= r_worldmodel->nummodels ) {
            Com_Error( ERR_DROP, "%s: inline model %d out of range",
                __func__, index );
        }
		model = &r_worldmodel->models[index];
		if (model->numfaces == 0)
			continue;	// clip brush only
		if ( currententity->flags & RF_BEAM )
			continue;
	// see if the bounding box lets us trivially reject, also sets
	// trivial accept status
		RotatedBBox (model->mins, model->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);

	// FIXME: stop transforming twice
		R_RotateBmodel ();

	// calculate dynamic lighting for bmodel
		R_PushDlights (model->headnode);

		if (topnode->plane)
		{
		// not a leaf; has to be clipped to the world BSP
			r_clipflags = clipflags;
			R_DrawSolidClippedSubmodelPolygons (model, 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 (model, 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 = qfalse;
}


/*
================
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 *)
				(((long)&ledges[0] + CACHE_SIZE - 1) & ~(CACHE_SIZE - 1));
	}

	if (r_surfsonstack)
	{
		surfaces =  (surf_t *)
				(((long)&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->integer)
	{
		rw_time1 = Sys_Milliseconds ();
	}

	R_RenderWorld ();

	if (r_dspeeds->integer)
	{
		rw_time2 = Sys_Milliseconds ();
		db_time1 = rw_time2;
	}

	R_DrawBEntitiesOnList ();

	if (r_dspeeds->integer)
	{
		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;
	float	alpha, one_minus_alpha;
	vec3_t	premult;
	int		r, g, b;

	alpha = r_newrefdef.blend[3];
	if( alpha <= 0 ) {
		if (modified) {
			// set back to default
			modified = qfalse;
			R_GammaCorrectAndSetPalette( ( const byte * ) d_8to24table );
		}
		return;
	}

	modified = qtrue;
	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;
	for( i = 0; i < 256; i++, in += 4, out += 4 ) {
		r = premult[0] + one_minus_alpha * in[0];
		g = premult[1] + one_minus_alpha * in[1];
		b = premult[2] + one_minus_alpha * in[2];
		if ( r > 255 ) r = 255;
		if ( g > 255 ) g = 255;
		if ( b > 255 ) b = 255;
		out[0] = r;
		out[1] = g;
		out[2] = b;
		out[3] = 255;
	}

	R_GammaCorrectAndSetPalette( palette );
}

//=======================================================================

/*
@@@@@@@@@@@@@@@@
R_RenderFrame

@@@@@@@@@@@@@@@@
*/
void R_RenderFrame (refdef_t *fd)
{
	r_newrefdef = *fd;

	if (!r_worldmodel && !( r_newrefdef.rdflags & RDF_NOWORLDMODEL ) )
		Com_Error (ERR_FATAL,"R_RenderView: NULL worldmodel");

	VectorCopy (fd->vieworg, r_refdef.vieworg);
	VectorCopy (fd->viewangles, r_refdef.viewangles);

	if (r_speeds->integer || r_dspeeds->integer)
		r_time1 = Sys_Milliseconds ();

	R_SetupFrame ();

	R_MarkLeaves ();	// done here so we know if we're in water

	R_PushDlights (r_worldmodel->nodes);

	R_EdgeDrawing ();

	if (r_dspeeds->integer)
	{
		se_time2 = Sys_Milliseconds ();
		de_time1 = se_time2;
	}

	R_DrawEntitiesOnList ();

	if (r_dspeeds->integer)
	{
		de_time2 = Sys_Milliseconds ();
		dp_time1 = Sys_Milliseconds ();
	}

	R_DrawParticles ();

	if (r_dspeeds->integer)
		dp_time2 = Sys_Milliseconds ();

	R_DrawAlphaSurfaces();

	//Start Replaced by Lewey
	if( sw_drawsird->integer && !( r_newrefdef.rdflags & RDF_NOWORLDMODEL ) )
	{
		R_ApplySIRDAlgorithum();
	}
	else
	{
		//don't do warp if we are doing SIRD because the warp
		//would make the SIRD impossible to see.
		if (r_dowarp)
			D_WarpScreen ();
	}
	//End Replaced by Lewey

	if (r_dspeeds->integer)
		da_time1 = Sys_Milliseconds ();

	if (r_dspeeds->integer)
		da_time2 = Sys_Milliseconds ();

	R_CalcPalette ();

	if (sw_aliasstats->integer)
		R_PrintAliasStats ();
		
	if (r_speeds->integer)
		R_PrintTimes ();

	if (r_dspeeds->integer)
		R_PrintDSpeeds ();

	if (sw_reportsurfout->integer && r_outofsurfaces)
		Com_Printf("Short %d surfaces\n", r_outofsurfaces);

	if (sw_reportedgeout->integer && r_outofedges)
		Com_Printf("Short roughly %d edges\n", r_outofedges * 2 / 3);
}

/*
** R_BeginFrame
*/
void R_BeginFrame( void ) {
	VID_BeginFrame();
}

void R_EndFrame( void ) {
	 VID_EndFrame();
}

/*
** R_GammaCorrectAndSetPalette
*/
void R_GammaCorrectAndSetPalette( const byte *palette ) {
	int i;
	byte *dest;

	dest = sw_state.currentpalette;
	for( i = 0; i < 256; i++ ) {
		dest[0] = sw_state.gammatable[ palette[0] ];
		dest[1] = sw_state.gammatable[ palette[1] ];
		dest[2] = sw_state.gammatable[ palette[2] ];
		palette += 4; dest += 4;
	}

	VID_UpdatePalette( sw_state.currentpalette );
}

/*
** R_CinematicSetPalette
*/
void R_CinematicSetPalette( const byte *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+=w)
	{
		d = (int *)(vid.buffer + i*vid.rowbytes);
		for (j=0 ; j<w ; j++)
			d[j] = 0;
	}
	// flush it to the screen
	R_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 byte * ) d_8to24table );
	}
}


/*
** 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++ )
	{
		R_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 );
	}
}



//===================================================================

void R_GetConfig( glconfig_t *dest ) {
	memset( dest, 0, sizeof( *dest ) );

	dest->renderer = GL_RENDERER_SOFTWARE;
	dest->vidWidth = vid.width;
	dest->vidHeight = vid.height;
}