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-rw-r--r--apps/plugins/sdl/progs/quake/r_main.c1085
1 files changed, 1085 insertions, 0 deletions
diff --git a/apps/plugins/sdl/progs/quake/r_main.c b/apps/plugins/sdl/progs/quake/r_main.c
new file mode 100644
index 0000000..3fe5146
--- /dev/null
+++ b/apps/plugins/sdl/progs/quake/r_main.c
@@ -0,0 +1,1085 @@
+/*
+Copyright (C) 1996-1997 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 "quakedef.h"
+#include "r_local.h"
+
+//define PASSAGES
+
+void *colormap;
+vec3_t viewlightvec;
+alight_t r_viewlighting = {128, 192, viewlightvec};
+float r_time1;
+int r_numallocatededges;
+qboolean r_drawpolys;
+qboolean r_drawculledpolys;
+qboolean r_worldpolysbacktofront;
+qboolean r_recursiveaffinetriangles = true;
+int r_pixbytes = 1;
+float r_aliasuvscale = 1.0;
+int r_outofsurfaces;
+int r_outofedges;
+
+qboolean r_dowarp, r_dowarpold, r_viewchanged;
+
+int numbtofpolys;
+btofpoly_t *pbtofpolys;
+mvertex_t *r_pcurrentvertbase;
+
+int c_surf;
+int r_maxsurfsseen, r_maxedgesseen, r_cnumsurfs;
+qboolean r_surfsonstack;
+int r_clipflags;
+
+byte *r_warpbuffer;
+
+byte *r_stack_start;
+
+qboolean r_fov_greater_than_90;
+
+//
+// view origin
+//
+vec3_t vup, base_vup;
+vec3_t vpn, base_vpn;
+vec3_t vright, base_vright;
+vec3_t r_origin;
+
+//
+// screen size info
+//
+refdef_t r_refdef;
+float xcenter, ycenter;
+float xscale, yscale;
+float xscaleinv, yscaleinv;
+float xscaleshrink, yscaleshrink;
+float aliasxscale, aliasyscale, aliasxcenter, aliasycenter;
+
+int screenwidth;
+
+float pixelAspect;
+float screenAspect;
+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;
+
+#define VIEWMODNAME_LENGTH 256
+char viewmodname[VIEWMODNAME_LENGTH+1];
+int modcount;
+
+int *pfrustum_indexes[4];
+int r_frustum_indexes[4*6];
+
+int reinit_surfcache = 1; // if 1, surface cache is currently empty and
+ // must be reinitialized for current cache size
+
+mleaf_t *r_viewleaf, *r_oldviewleaf;
+
+texture_t *r_notexture_mip;
+
+float r_aliastransition, r_resfudge;
+
+int d_lightstylevalue[256]; // 8.8 fraction of base light value
+
+float dp_time1, dp_time2, db_time1, db_time2, rw_time1, rw_time2;
+float se_time1, se_time2, de_time1, de_time2, dv_time1, dv_time2;
+
+void R_MarkLeaves (void);
+
+cvar_t r_draworder = {"r_draworder","0"};
+cvar_t r_speeds = {"r_speeds","0"};
+cvar_t r_timegraph = {"r_timegraph","0"};
+cvar_t r_graphheight = {"r_graphheight","10"};
+cvar_t r_clearcolor = {"r_clearcolor","2"};
+cvar_t r_waterwarp = {"r_waterwarp","1"};
+cvar_t r_fullbright = {"r_fullbright","0"};
+cvar_t r_drawentities = {"r_drawentities","1"};
+cvar_t r_drawviewmodel = {"r_drawviewmodel","1"};
+cvar_t r_aliasstats = {"r_polymodelstats","0"};
+cvar_t r_dspeeds = {"r_dspeeds","0"};
+cvar_t r_drawflat = {"r_drawflat", "0"};
+cvar_t r_ambient = {"r_ambient", "0"};
+cvar_t r_reportsurfout = {"r_reportsurfout", "0"};
+cvar_t r_maxsurfs = {"r_maxsurfs", "0"};
+cvar_t r_numsurfs = {"r_numsurfs", "0"};
+cvar_t r_reportedgeout = {"r_reportedgeout", "0"};
+cvar_t r_maxedges = {"r_maxedges", "0"};
+cvar_t r_numedges = {"r_numedges", "0"};
+cvar_t r_aliastransbase = {"r_aliastransbase", "200"};
+cvar_t r_aliastransadj = {"r_aliastransadj", "100"};
+
+extern cvar_t scr_fov;
+
+void CreatePassages (void);
+void SetVisibilityByPassages (void);
+
+/*
+==================
+R_InitTextures
+==================
+*/
+void R_InitTextures (void)
+{
+ int x,y, m;
+ byte *dest;
+
+// create a simple checkerboard texture for the default
+ r_notexture_mip = Hunk_AllocName (sizeof(texture_t) + 16*16+8*8+4*4+2*2, "notexture");
+
+ r_notexture_mip->width = r_notexture_mip->height = 16;
+ r_notexture_mip->offsets[0] = sizeof(texture_t);
+ r_notexture_mip->offsets[1] = r_notexture_mip->offsets[0] + 16*16;
+ r_notexture_mip->offsets[2] = r_notexture_mip->offsets[1] + 8*8;
+ r_notexture_mip->offsets[3] = r_notexture_mip->offsets[2] + 4*4;
+
+ for (m=0 ; m<4 ; m++)
+ {
+ dest = (byte *)r_notexture_mip + r_notexture_mip->offsets[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_Init
+===============
+*/
+void R_Init (void)
+{
+ int dummy;
+
+// get stack position so we can guess if we are going to overflow
+ r_stack_start = (byte *)&dummy;
+
+ R_InitTurb ();
+
+ Cmd_AddCommand ("timerefresh", R_TimeRefresh_f);
+ Cmd_AddCommand ("pointfile", R_ReadPointFile_f);
+
+ Cvar_RegisterVariable (&r_draworder);
+ Cvar_RegisterVariable (&r_speeds);
+ Cvar_RegisterVariable (&r_timegraph);
+ Cvar_RegisterVariable (&r_graphheight);
+ Cvar_RegisterVariable (&r_drawflat);
+ Cvar_RegisterVariable (&r_ambient);
+ Cvar_RegisterVariable (&r_clearcolor);
+ Cvar_RegisterVariable (&r_waterwarp);
+ Cvar_RegisterVariable (&r_fullbright);
+ Cvar_RegisterVariable (&r_drawentities);
+ Cvar_RegisterVariable (&r_drawviewmodel);
+ Cvar_RegisterVariable (&r_aliasstats);
+ Cvar_RegisterVariable (&r_dspeeds);
+ Cvar_RegisterVariable (&r_reportsurfout);
+ Cvar_RegisterVariable (&r_maxsurfs);
+ Cvar_RegisterVariable (&r_numsurfs);
+ Cvar_RegisterVariable (&r_reportedgeout);
+ Cvar_RegisterVariable (&r_maxedges);
+ Cvar_RegisterVariable (&r_numedges);
+ Cvar_RegisterVariable (&r_aliastransbase);
+ Cvar_RegisterVariable (&r_aliastransadj);
+
+ Cvar_SetValue ("r_maxedges", (float)NUMSTACKEDGES);
+ Cvar_SetValue ("r_maxsurfs", (float)NUMSTACKSURFACES);
+
+ 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_InitParticles ();
+
+// TODO: collect 386-specific code in one place
+#if id386
+ Sys_MakeCodeWriteable ((long)R_EdgeCodeStart,
+ (long)R_EdgeCodeEnd - (long)R_EdgeCodeStart);
+#endif // id386
+
+ D_Init ();
+}
+
+/*
+===============
+R_NewMap
+===============
+*/
+void R_NewMap (void)
+{
+ int i;
+
+// clear out efrags in case the level hasn't been reloaded
+// FIXME: is this one short?
+ for (i=0 ; i<cl.worldmodel->numleafs ; i++)
+ cl.worldmodel->leafs[i].efrags = NULL;
+
+ r_viewleaf = NULL;
+ R_ClearParticles ();
+
+ r_cnumsurfs = r_maxsurfs.value;
+
+ if (r_cnumsurfs <= MINSURFACES)
+ r_cnumsurfs = MINSURFACES;
+
+ if (r_cnumsurfs > NUMSTACKSURFACES)
+ {
+ surfaces = Hunk_AllocName (r_cnumsurfs * sizeof(surf_t), "surfaces");
+ 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 = r_maxedges.value;
+
+ if (r_numallocatededges < MINEDGES)
+ r_numallocatededges = MINEDGES;
+
+ if (r_numallocatededges <= NUMSTACKEDGES)
+ {
+ auxedges = NULL;
+ }
+ else
+ {
+ auxedges = Hunk_AllocName (r_numallocatededges * sizeof(edge_t),
+ "edges");
+ }
+
+ r_dowarpold = false;
+ r_viewchanged = false;
+#ifdef PASSAGES
+CreatePassages ();
+#endif
+}
+
+
+/*
+===============
+R_SetVrect
+===============
+*/
+void R_SetVrect (vrect_t *pvrectin, vrect_t *pvrect, int lineadj)
+{
+ int h;
+ float size;
+
+ size = scr_viewsize.value > 100 ? 100 : scr_viewsize.value;
+ if (cl.intermission)
+ {
+ size = 100;
+ lineadj = 0;
+ }
+ size /= 100;
+
+ h = pvrectin->height - lineadj;
+ pvrect->width = pvrectin->width * size;
+ if (pvrect->width < 96)
+ {
+ size = 96.0 / pvrectin->width;
+ pvrect->width = 96; // min for icons
+ }
+ pvrect->width &= ~7;
+ pvrect->height = pvrectin->height * size;
+ if (pvrect->height > pvrectin->height - lineadj)
+ pvrect->height = pvrectin->height - lineadj;
+
+ pvrect->height &= ~1;
+
+ pvrect->x = (pvrectin->width - pvrect->width)/2;
+ pvrect->y = (h - pvrect->height)/2;
+
+ {
+ if (lcd_x.value)
+ {
+ pvrect->y >>= 1;
+ pvrect->height >>= 1;
+ }
+ }
+}
+
+
+/*
+===============
+R_ViewChanged
+
+Called every time the vid structure or r_refdef changes.
+Guaranteed to be called before the first refresh
+===============
+*/
+void R_ViewChanged (vrect_t *pvrect, int lineadj, float aspect)
+{
+ int i;
+ float res_scale;
+
+ r_viewchanged = true;
+
+ R_SetVrect (pvrect, &r_refdef.vrect, lineadj);
+
+ r_refdef.horizontalFieldOfView = 2.0 * tan (r_refdef.fov_x/360*M_PI);
+ r_refdef.fvrectx = (float)r_refdef.vrect.x;
+ r_refdef.fvrectx_adj = (float)r_refdef.vrect.x - 0.5;
+ r_refdef.vrect_x_adj_shift20 = (r_refdef.vrect.x<<20) + (1<<19) - 1;
+ r_refdef.fvrecty = (float)r_refdef.vrect.y;
+ r_refdef.fvrecty_adj = (float)r_refdef.vrect.y - 0.5;
+ r_refdef.vrectright = r_refdef.vrect.x + r_refdef.vrect.width;
+ r_refdef.vrectright_adj_shift20 = (r_refdef.vrectright<<20) + (1<<19) - 1;
+ r_refdef.fvrectright = (float)r_refdef.vrectright;
+ r_refdef.fvrectright_adj = (float)r_refdef.vrectright - 0.5;
+ r_refdef.vrectrightedge = (float)r_refdef.vrectright - 0.99;
+ r_refdef.vrectbottom = r_refdef.vrect.y + r_refdef.vrect.height;
+ r_refdef.fvrectbottom = (float)r_refdef.vrectbottom;
+ r_refdef.fvrectbottom_adj = (float)r_refdef.vrectbottom - 0.5;
+
+ r_refdef.aliasvrect.x = (int)(r_refdef.vrect.x * r_aliasuvscale);
+ r_refdef.aliasvrect.y = (int)(r_refdef.vrect.y * r_aliasuvscale);
+ r_refdef.aliasvrect.width = (int)(r_refdef.vrect.width * r_aliasuvscale);
+ r_refdef.aliasvrect.height = (int)(r_refdef.vrect.height * r_aliasuvscale);
+ r_refdef.aliasvrectright = r_refdef.aliasvrect.x +
+ r_refdef.aliasvrect.width;
+ r_refdef.aliasvrectbottom = r_refdef.aliasvrect.y +
+ r_refdef.aliasvrect.height;
+
+ pixelAspect = aspect;
+ xOrigin = r_refdef.xOrigin;
+ yOrigin = r_refdef.yOrigin;
+
+ screenAspect = r_refdef.vrect.width*pixelAspect /
+ r_refdef.vrect.height;
+// 320*200 1.0 pixelAspect = 1.6 screenAspect
+// 320*240 1.0 pixelAspect = 1.3333 screenAspect
+// proper 320*200 pixelAspect = 0.8333333
+
+ verticalFieldOfView = r_refdef.horizontalFieldOfView / screenAspect;
+
+// values for perspective projection
+// if math were exact, the values would range from 0.5 to to range+0.5
+// hopefully they wll be in the 0.000001 to range+.999999 and truncate
+// the polygon rasterization will never render in the first row or column
+// but will definately render in the [range] row and column, so adjust the
+// buffer origin to get an exact edge to edge fill
+ xcenter = ((float)r_refdef.vrect.width * XCENTERING) +
+ r_refdef.vrect.x - 0.5;
+ aliasxcenter = xcenter * r_aliasuvscale;
+ ycenter = ((float)r_refdef.vrect.height * YCENTERING) +
+ r_refdef.vrect.y - 0.5;
+ aliasycenter = ycenter * r_aliasuvscale;
+
+ xscale = r_refdef.vrect.width / r_refdef.horizontalFieldOfView;
+ aliasxscale = xscale * r_aliasuvscale;
+ xscaleinv = 1.0 / xscale;
+ yscale = xscale * pixelAspect;
+ aliasyscale = yscale * r_aliasuvscale;
+ yscaleinv = 1.0 / yscale;
+ xscaleshrink = (r_refdef.vrect.width-6)/r_refdef.horizontalFieldOfView;
+ yscaleshrink = xscaleshrink*pixelAspect;
+
+// left side clip
+ screenedge[0].normal[0] = -1.0 / (xOrigin*r_refdef.horizontalFieldOfView);
+ screenedge[0].normal[1] = 0;
+ screenedge[0].normal[2] = 1;
+ screenedge[0].type = PLANE_ANYZ;
+
+// right side clip
+ screenedge[1].normal[0] =
+ 1.0 / ((1.0-xOrigin)*r_refdef.horizontalFieldOfView);
+ screenedge[1].normal[1] = 0;
+ screenedge[1].normal[2] = 1;
+ screenedge[1].type = PLANE_ANYZ;
+
+// top side clip
+ screenedge[2].normal[0] = 0;
+ screenedge[2].normal[1] = -1.0 / (yOrigin*verticalFieldOfView);
+ screenedge[2].normal[2] = 1;
+ screenedge[2].type = PLANE_ANYZ;
+
+// bottom side clip
+ screenedge[3].normal[0] = 0;
+ screenedge[3].normal[1] = 1.0 / ((1.0-yOrigin)*verticalFieldOfView);
+ screenedge[3].normal[2] = 1;
+ screenedge[3].type = PLANE_ANYZ;
+
+ for (i=0 ; i<4 ; i++)
+ VectorNormalize (screenedge[i].normal);
+
+ res_scale = sqrt ((double)(r_refdef.vrect.width * r_refdef.vrect.height) /
+ (320.0 * 152.0)) *
+ (2.0 / r_refdef.horizontalFieldOfView);
+ r_aliastransition = r_aliastransbase.value * res_scale;
+ r_resfudge = r_aliastransadj.value * res_scale;
+
+ if (scr_fov.value <= 90.0)
+ r_fov_greater_than_90 = false;
+ else
+ r_fov_greater_than_90 = true;
+
+// TODO: collect 386-specific code in one place
+#if id386
+ if (r_pixbytes == 1)
+ {
+ Sys_MakeCodeWriteable ((long)R_Surf8Start,
+ (long)R_Surf8End - (long)R_Surf8Start);
+ colormap = vid.colormap;
+ R_Surf8Patch ();
+ }
+ else
+ {
+ Sys_MakeCodeWriteable ((long)R_Surf16Start,
+ (long)R_Surf16End - (long)R_Surf16Start);
+ colormap = vid.colormap16;
+ R_Surf16Patch ();
+ }
+#endif // id386
+
+ D_ViewChanged ();
+}
+
+
+/*
+===============
+R_MarkLeaves
+===============
+*/
+void R_MarkLeaves (void)
+{
+ byte *vis;
+ mnode_t *node;
+ int i;
+
+ if (r_oldviewleaf == r_viewleaf)
+ return;
+
+ r_visframecount++;
+ r_oldviewleaf = r_viewleaf;
+
+ vis = Mod_LeafPVS (r_viewleaf, cl.worldmodel);
+
+ for (i=0 ; i<cl.worldmodel->numleafs ; i++)
+ {
+ if (vis[i>>3] & (1<<(i&7)))
+ {
+ node = (mnode_t *)&cl.worldmodel->leafs[i+1];
+ do
+ {
+ if (node->visframe == r_visframecount)
+ break;
+ node->visframe = r_visframecount;
+ node = node->parent;
+ } while (node);
+ }
+ }
+}
+
+
+/*
+=============
+R_DrawEntitiesOnList
+=============
+*/
+void R_DrawEntitiesOnList (void)
+{
+ int i, j;
+ int lnum;
+ alight_t lighting;
+// FIXME: remove and do real lighting
+ float lightvec[3] = {-1, 0, 0};
+ vec3_t dist;
+ float add;
+
+ if (!r_drawentities.value)
+ return;
+
+ for (i=0 ; i<cl_numvisedicts ; i++)
+ {
+ currententity = cl_visedicts[i];
+
+ if (currententity == &cl_entities[cl.viewentity])
+ continue; // don't draw the player
+
+ switch (currententity->model->type)
+ {
+ case mod_sprite:
+ VectorCopy (currententity->origin, r_entorigin);
+ VectorSubtract (r_origin, r_entorigin, modelorg);
+ R_DrawSprite ();
+ break;
+
+ case mod_alias:
+ VectorCopy (currententity->origin, r_entorigin);
+ VectorSubtract (r_origin, r_entorigin, modelorg);
+
+ // see if the bounding box lets us trivially reject, also sets
+ // trivial accept status
+ if (R_AliasCheckBBox ())
+ {
+ j = R_LightPoint (currententity->origin);
+
+ lighting.ambientlight = j;
+ lighting.shadelight = j;
+
+ lighting.plightvec = lightvec;
+
+ 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)
+ lighting.ambientlight += add;
+ }
+ }
+
+ // clamp lighting so it doesn't overbright as much
+ if (lighting.ambientlight > 128)
+ lighting.ambientlight = 128;
+ if (lighting.ambientlight + lighting.shadelight > 192)
+ lighting.shadelight = 192 - lighting.ambientlight;
+
+ R_AliasDrawModel (&lighting);
+ }
+
+ break;
+
+ default:
+ break;
+ }
+ }
+}
+
+/*
+=============
+R_DrawViewModel
+=============
+*/
+void R_DrawViewModel (void)
+{
+// FIXME: remove and do real lighting
+ float lightvec[3] = {-1, 0, 0};
+ int j;
+ int lnum;
+ vec3_t dist;
+ float add;
+ dlight_t *dl;
+
+ if (!r_drawviewmodel.value || r_fov_greater_than_90)
+ return;
+
+ if (cl.items & IT_INVISIBILITY)
+ return;
+
+ if (cl.stats[STAT_HEALTH] <= 0)
+ return;
+
+ currententity = &cl.viewent;
+ if (!currententity->model)
+ return;
+
+ VectorCopy (currententity->origin, r_entorigin);
+ VectorSubtract (r_origin, r_entorigin, modelorg);
+
+ VectorCopy (vup, viewlightvec);
+ VectorInverse (viewlightvec);
+
+ j = R_LightPoint (currententity->origin);
+
+ if (j < 24)
+ j = 24; // allways give some light on gun
+ r_viewlighting.ambientlight = j;
+ r_viewlighting.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)
+ r_viewlighting.ambientlight += add;
+ }
+
+// clamp lighting so it doesn't overbright as much
+ if (r_viewlighting.ambientlight > 128)
+ r_viewlighting.ambientlight = 128;
+ if (r_viewlighting.ambientlight + r_viewlighting.shadelight > 192)
+ r_viewlighting.shadelight = 192 - r_viewlighting.ambientlight;
+
+ r_viewlighting.plightvec = lightvec;
+
+#ifdef QUAKE2
+ cl.light_level = r_viewlighting.ambientlight;
+#endif
+
+ R_AliasDrawModel (&r_viewlighting);
+}
+
+
+/*
+=============
+R_BmodelCheckBBox
+=============
+*/
+int R_BmodelCheckBBox (model_t *clmodel, float *minmaxs)
+{
+ int i, *pindex, clipflags;
+ vec3_t acceptpt, rejectpt;
+ double d;
+
+ clipflags = 0;
+
+ if (currententity->angles[0] || currententity->angles[1]
+ || currententity->angles[2])
+ {
+ for (i=0 ; i<4 ; i++)
+ {
+ d = DotProduct (currententity->origin, view_clipplanes[i].normal);
+ d -= view_clipplanes[i].dist;
+
+ if (d <= -clmodel->radius)
+ return BMODEL_FULLY_CLIPPED;
+
+ if (d <= clmodel->radius)
+ clipflags |= (1<<i);
+ }
+ }
+ else
+ {
+ 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_DrawBEntitiesOnList
+=============
+*/
+void R_DrawBEntitiesOnList (void)
+{
+ int i, j, k, clipflags;
+ vec3_t oldorigin;
+ model_t *clmodel;
+ float minmaxs[6];
+
+ if (!r_drawentities.value)
+ return;
+
+ VectorCopy (modelorg, oldorigin);
+ insubmodel = true;
+ r_dlightframecount = r_framecount;
+
+ for (i=0 ; i<cl_numvisedicts ; i++)
+ {
+ currententity = cl_visedicts[i];
+
+ switch (currententity->model->type)
+ {
+ case mod_brush:
+
+ clmodel = currententity->model;
+
+ // see if the bounding box lets us trivially reject, also sets
+ // trivial accept status
+ for (j=0 ; j<3 ; j++)
+ {
+ minmaxs[j] = currententity->origin[j] +
+ clmodel->mins[j];
+ minmaxs[3+j] = currententity->origin[j] +
+ clmodel->maxs[j];
+ }
+
+ clipflags = R_BmodelCheckBBox (clmodel, minmaxs);
+
+ if (clipflags != BMODEL_FULLY_CLIPPED)
+ {
+ VectorCopy (currententity->origin, r_entorigin);
+ VectorSubtract (r_origin, r_entorigin, modelorg);
+ // FIXME: is this needed?
+ VectorCopy (modelorg, r_worldmodelorg);
+
+ r_pcurrentvertbase = clmodel->vertexes;
+
+ // FIXME: stop transforming twice
+ R_RotateBmodel ();
+
+ // calculate dynamic lighting for bmodel if it's not an
+ // instanced model
+ if (clmodel->firstmodelsurface != 0)
+ {
+ for (k=0 ; k<MAX_DLIGHTS ; k++)
+ {
+ if ((cl_dlights[k].die < cl.time) ||
+ (!cl_dlights[k].radius))
+ {
+ continue;
+ }
+
+ R_MarkLights (&cl_dlights[k], 1<<k,
+ clmodel->nodes + clmodel->hulls[0].firstclipnode);
+ }
+ }
+
+ // if the driver wants polygons, deliver those. Z-buffering is on
+ // at this point, so no clipping to the world tree is needed, just
+ // frustum clipping
+ if (r_drawpolys | r_drawculledpolys)
+ {
+ R_ZDrawSubmodelPolys (clmodel);
+ }
+ else
+ {
+ r_pefragtopnode = NULL;
+
+ for (j=0 ; j<3 ; j++)
+ {
+ r_emins[j] = minmaxs[j];
+ r_emaxs[j] = minmaxs[3+j];
+ }
+
+ R_SplitEntityOnNode2 (cl.worldmodel->nodes);
+
+ if (r_pefragtopnode)
+ {
+ currententity->topnode = r_pefragtopnode;
+
+ if (r_pefragtopnode->contents >= 0)
+ {
+ // not a leaf; has to be clipped to the world BSP
+ r_clipflags = clipflags;
+ R_DrawSolidClippedSubmodelPolygons (clmodel);
+ }
+ 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 (clmodel, clipflags);
+ }
+
+ currententity->topnode = NULL;
+ }
+ }
+
+ // 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 (base_modelorg, modelorg);
+ VectorCopy (oldorigin, modelorg);
+ R_TransformFrustum ();
+ }
+
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ 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 (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.value)
+ {
+ rw_time1 = Sys_FloatTime ();
+ }
+
+ R_RenderWorld ();
+
+ if (r_drawculledpolys)
+ R_ScanEdges ();
+
+// only the world can be drawn back to front with no z reads or compares, just
+// z writes, so have the driver turn z compares on now
+ D_TurnZOn ();
+
+ if (r_dspeeds.value)
+ {
+ rw_time2 = Sys_FloatTime ();
+ db_time1 = rw_time2;
+ }
+
+ R_DrawBEntitiesOnList ();
+
+ if (r_dspeeds.value)
+ {
+ db_time2 = Sys_FloatTime ();
+ se_time1 = db_time2;
+ }
+
+ if (!r_dspeeds.value)
+ {
+ VID_UnlockBuffer ();
+ S_ExtraUpdate (); // don't let sound get messed up if going slow
+ VID_LockBuffer ();
+ }
+
+ if (!(r_drawpolys | r_drawculledpolys))
+ R_ScanEdges ();
+}
+
+
+/*
+================
+R_RenderView
+
+r_refdef must be set before the first call
+================
+*/
+void R_RenderView_ (void)
+{
+ byte warpbuffer[WARP_WIDTH * WARP_HEIGHT];
+
+ r_warpbuffer = warpbuffer;
+
+ if (r_timegraph.value || r_speeds.value || r_dspeeds.value)
+ r_time1 = Sys_FloatTime ();
+
+ R_SetupFrame ();
+
+#ifdef PASSAGES
+SetVisibilityByPassages ();
+#else
+ R_MarkLeaves (); // done here so we know if we're in water
+#endif
+
+// make FDIV fast. This reduces timing precision after we've been running for a
+// while, so we don't do it globally. This also sets chop mode, and we do it
+// here so that setup stuff like the refresh area calculations match what's
+// done in screen.c
+ Sys_LowFPPrecision ();
+
+ if (!cl_entities[0].model || !cl.worldmodel)
+ Sys_Error ("R_RenderView: NULL worldmodel");
+
+ if (!r_dspeeds.value)
+ {
+ VID_UnlockBuffer ();
+ S_ExtraUpdate (); // don't let sound get messed up if going slow
+ VID_LockBuffer ();
+ }
+
+ R_EdgeDrawing ();
+
+ if (!r_dspeeds.value)
+ {
+ VID_UnlockBuffer ();
+ S_ExtraUpdate (); // don't let sound get messed up if going slow
+ VID_LockBuffer ();
+ }
+
+ if (r_dspeeds.value)
+ {
+ se_time2 = Sys_FloatTime ();
+ de_time1 = se_time2;
+ }
+
+ R_DrawEntitiesOnList ();
+
+ if (r_dspeeds.value)
+ {
+ de_time2 = Sys_FloatTime ();
+ dv_time1 = de_time2;
+ }
+
+ R_DrawViewModel ();
+
+ if (r_dspeeds.value)
+ {
+ dv_time2 = Sys_FloatTime ();
+ dp_time1 = Sys_FloatTime ();
+ }
+
+ R_DrawParticles ();
+
+ if (r_dspeeds.value)
+ dp_time2 = Sys_FloatTime ();
+
+ if (r_dowarp)
+ D_WarpScreen ();
+
+ V_SetContentsColor (r_viewleaf->contents);
+
+ if (r_timegraph.value)
+ R_TimeGraph ();
+
+ if (r_aliasstats.value)
+ R_PrintAliasStats ();
+
+ if (r_speeds.value)
+ R_PrintTimes ();
+
+ if (r_dspeeds.value)
+ R_PrintDSpeeds ();
+
+ if (r_reportsurfout.value && r_outofsurfaces)
+ Con_Printf ("Short %d surfaces\n", r_outofsurfaces);
+
+ if (r_reportedgeout.value && r_outofedges)
+ Con_Printf ("Short roughly %d edges\n", r_outofedges * 2 / 3);
+
+// back to high floating-point precision
+ Sys_HighFPPrecision ();
+}
+
+void R_RenderView (void)
+{
+ int dummy;
+ int delta;
+
+ delta = (byte *)&dummy - r_stack_start;
+ if (delta < -10000 || delta > 10000)
+ Sys_Error ("R_RenderView: called without enough stack");
+
+ if ( Hunk_LowMark() & 3 )
+ Sys_Error ("Hunk is missaligned");
+
+ if ( (long)(&dummy) & 3 )
+ Sys_Error ("Stack is missaligned");
+
+ if ( (long)(&r_warpbuffer) & 3 )
+ Sys_Error ("Globals are missaligned");
+
+ R_RenderView_ ();
+}
+
+/*
+================
+R_InitTurb
+================
+*/
+void R_InitTurb (void)
+{
+ int i;
+
+ for (i=0 ; i<(SIN_BUFFER_SIZE) ; i++)
+ {
+ sintable[i] = AMP + sin(i*3.14159*2/CYCLE)*AMP;
+ intsintable[i] = AMP2 + sin(i*3.14159*2/CYCLE)*AMP2; // AMP2, not 20
+ }
+}
+
generated by cgit v1.1 at 2026-04-24 22:26:31 +0000