quakeforge/libs/video/renderer/sw32/sw32_rmisc.c

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/*
sw32_rmisc.c
(description)
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
static __attribute__ ((used)) const char rcsid[] = "$Id$";
#define NH_DEFINE
#include "namehack.h"
#include "QF/cmd.h"
#include "QF/cvar.h"
#include "QF/draw.h"
#include "QF/render.h"
#include "QF/sys.h"
#include "compat.h"
#include "r_internal.h"
#include "vid_internal.h"
static void
R_CheckVariables (void)
{
}
/*
R_TimeRefresh_f
For program optimization
*/
void
sw32_R_TimeRefresh_f (void)
{
int i;
float start, stop, time;
int startangle;
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vrect_t vr;
startangle = r_refdef.viewangles[1];
start = Sys_DoubleTime ();
for (i = 0; i < 128; i++) {
r_refdef.viewangles[1] = i / 128.0 * 360.0;
VID_LockBuffer ();
sw32_R_RenderView ();
VID_UnlockBuffer ();
vr.x = r_refdef.vrect.x;
vr.y = r_refdef.vrect.y;
vr.width = r_refdef.vrect.width;
vr.height = r_refdef.vrect.height;
vr.next = NULL;
VID_Update (&vr);
}
stop = Sys_DoubleTime ();
time = stop - start;
Sys_Printf ("%f seconds (%f fps)\n", time, 128 / time);
r_refdef.viewangles[1] = startangle;
}
void
sw32_R_LoadSky_f (void)
{
if (Cmd_Argc () != 2) {
Sys_Printf ("loadsky <name> : load a skybox\n");
return;
}
sw32_R_LoadSkys (Cmd_Argv (1));
}
void
sw32_R_PrintTimes (void)
{
float r_time2;
float ms;
r_time2 = Sys_DoubleTime ();
ms = 1000 * (r_time2 - r_time1);
Sys_Printf ("%5.1f ms %3i/%3i/%3i poly %3i surf\n",
ms, sw32_c_faceclip, sw32_r_polycount, sw32_r_drawnpolycount, sw32_c_surf);
sw32_c_surf = 0;
}
void
sw32_R_PrintAliasStats (void)
{
Sys_Printf ("%3i polygon model drawn\n", sw32_r_amodels_drawn);
}
void
sw32_R_TransformFrustum (void)
{
int i;
vec3_t v, v2;
for (i = 0; i < 4; i++) {
v[0] = sw32_screenedge[i].normal[2];
v[1] = -sw32_screenedge[i].normal[0];
v[2] = sw32_screenedge[i].normal[1];
v2[0] = v[1] * vright[0] + v[2] * vup[0] + v[0] * vpn[0];
v2[1] = v[1] * vright[1] + v[2] * vup[1] + v[0] * vpn[1];
v2[2] = v[1] * vright[2] + v[2] * vup[2] + v[0] * vpn[2];
VectorCopy (v2, sw32_view_clipplanes[i].normal);
sw32_view_clipplanes[i].dist = DotProduct (modelorg, v2);
}
}
void
sw32_TransformVector (const vec3_t in, vec3_t out)
{
out[0] = DotProduct (in, vright);
out[1] = DotProduct (in, vup);
out[2] = DotProduct (in, vpn);
}
void
sw32_R_TransformPlane (plane_t *p, float *normal, float *dist)
{
float d;
d = DotProduct (r_origin, p->normal);
*dist = p->dist - d;
// TODO: when we have rotating entities, this will need to use the view matrix
sw32_TransformVector (p->normal, normal);
}
static void
R_SetUpFrustumIndexes (void)
{
int i, j, *pindex;
pindex = sw32_r_frustum_indexes;
for (i = 0; i < 4; i++) {
for (j = 0; j < 3; j++) {
if (sw32_view_clipplanes[i].normal[j] < 0) {
pindex[j] = j;
pindex[j + 3] = j + 3;
} else {
pindex[j] = j + 3;
pindex[j + 3] = j;
}
}
// FIXME: do just once at start
sw32_pfrustum_indexes[i] = pindex;
pindex += 6;
}
}
void
sw32_R_SetupFrame (void)
{
int edgecount;
vrect_t vrect;
float w, h;
// don't allow cheats in multiplayer
Cvar_SetValue (r_ambient, 0);
Cvar_SetValue (r_drawflat, 0);
if (r_numsurfs->int_val) {
if ((sw32_surface_p - sw32_surfaces) > sw32_r_maxsurfsseen)
sw32_r_maxsurfsseen = sw32_surface_p - sw32_surfaces;
Sys_Printf ("Used %ld of %ld surfs; %d max\n",
(long) (sw32_surface_p - sw32_surfaces),
(long) (sw32_surf_max - sw32_surfaces), sw32_r_maxsurfsseen);
}
if (r_numedges->int_val) {
edgecount = sw32_edge_p - sw32_r_edges;
if (edgecount > sw32_r_maxedgesseen)
sw32_r_maxedgesseen = edgecount;
Sys_Printf ("Used %d of %d edges; %d max\n", edgecount,
sw32_r_numallocatededges, sw32_r_maxedgesseen);
}
r_refdef.ambientlight = max (r_ambient->value, 0);
R_CheckVariables ();
R_AnimateLight ();
R_ClearEnts ();
r_framecount++;
sw32_numbtofpolys = 0;
// debugging
#if 0
r_refdef.vieworg[0] = 80;
r_refdef.vieworg[1] = 64;
r_refdef.vieworg[2] = 40;
r_refdef.viewangles[0] = 0;
r_refdef.viewangles[1] = 46.763641357;
r_refdef.viewangles[2] = 0;
#endif
// build the transformation matrix for the given view angles
VectorCopy (r_refdef.vieworg, modelorg);
VectorCopy (r_refdef.vieworg, r_origin);
AngleVectors (r_refdef.viewangles, vpn, vright, vup);
// current viewleaf
r_viewleaf = Mod_PointInLeaf (r_origin, r_worldentity.model);
sw32_r_dowarpold = sw32_r_dowarp;
sw32_r_dowarp = r_waterwarp->int_val && (r_viewleaf->contents <=
CONTENTS_WATER);
if ((sw32_r_dowarp != sw32_r_dowarpold) || sw32_r_viewchanged) {
if (sw32_r_dowarp) {
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if ((vid.width <= (unsigned int) vid.maxwarpwidth) &&
(vid.height <= (unsigned int) vid.maxwarpheight)) {
vrect.x = 0;
vrect.y = 0;
vrect.width = vid.width;
vrect.height = vid.height;
R_SetVrect (&vrect, &r_refdef.vrect, vr_data.lineadj);
sw32_R_ViewChanged (vid.aspect);
} else {
w = vid.width;
h = vid.height;
if (w > vid.maxwarpwidth) {
h *= (float) vid.maxwarpwidth / w;
w = vid.maxwarpwidth;
}
if (h > vid.maxwarpheight) {
h = vid.maxwarpheight;
w *= (float) vid.maxwarpheight / h;
}
vrect.x = 0;
vrect.y = 0;
vrect.width = (int) w;
vrect.height = (int) h;
R_SetVrect (&vrect, &r_refdef.vrect,
(int) ((float) vr_data.lineadj *
(h / (float) vid.height)));
sw32_R_ViewChanged (vid.aspect * (h / w) * ((float) vid.width /
(float) vid.height));
}
} else {
vrect.x = 0;
vrect.y = 0;
vrect.width = vid.width;
vrect.height = vid.height;
r_refdef.vrect = scr_vrect;
sw32_R_ViewChanged (vid.aspect);
}
sw32_r_viewchanged = false;
}
// start off with just the four screen edge clip planes
sw32_R_TransformFrustum ();
// save base values
VectorCopy (vpn, base_vpn);
VectorCopy (vright, base_vright);
VectorCopy (vup, base_vup);
VectorCopy (modelorg, base_modelorg);
sw32_R_SetSkyFrame ();
R_SetUpFrustumIndexes ();
r_cache_thrash = false;
// clear frame counts
sw32_c_faceclip = 0;
sw32_r_polycount = 0;
sw32_r_drawnpolycount = 0;
sw32_r_amodels_drawn = 0;
sw32_r_outofsurfaces = 0;
sw32_r_outofedges = 0;
sw32_D_SetupFrame ();
}