1 /*
2 sw32_rmisc.c
3
4 (description)
5
6 Copyright (C) 1996-1997 Id Software, Inc.
7
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License
10 as published by the Free Software Foundation; either version 2
11 of the License, or (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16
17 See the GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to:
21
22 Free Software Foundation, Inc.
23 59 Temple Place - Suite 330
24 Boston, MA 02111-1307, USA
25
26 */
27 #ifdef HAVE_CONFIG_H
28 # include "config.h"
29 #endif
30
31 #define NH_DEFINE
32 #include "namehack.h"
33
34 #include "QF/cmd.h"
35 #include "QF/cvar.h"
36 #include "QF/draw.h"
37 #include "QF/render.h"
38 #include "QF/sys.h"
39
40 #include "compat.h"
41 #include "r_internal.h"
42 #include "vid_internal.h"
43
44
45 static void
R_CheckVariables(void)46 R_CheckVariables (void)
47 {
48 }
49
50 /*
51 R_TimeRefresh_f
52
53 For program optimization
54 */
55 void
sw32_R_TimeRefresh_f(void)56 sw32_R_TimeRefresh_f (void)
57 {
58 int i;
59 float start, stop, time;
60 int startangle;
61 vrect_t vr;
62
63 startangle = r_refdef.viewangles[1];
64
65 start = Sys_DoubleTime ();
66 for (i = 0; i < 128; i++) {
67 r_refdef.viewangles[1] = i / 128.0 * 360.0;
68
69 VID_LockBuffer ();
70
71 sw32_R_RenderView ();
72
73 VID_UnlockBuffer ();
74
75 vr.x = r_refdef.vrect.x;
76 vr.y = r_refdef.vrect.y;
77 vr.width = r_refdef.vrect.width;
78 vr.height = r_refdef.vrect.height;
79 vr.next = NULL;
80 VID_Update (&vr);
81 }
82 stop = Sys_DoubleTime ();
83 time = stop - start;
84 Sys_Printf ("%f seconds (%f fps)\n", time, 128 / time);
85
86 r_refdef.viewangles[1] = startangle;
87 }
88
89 void
sw32_R_LoadSky_f(void)90 sw32_R_LoadSky_f (void)
91 {
92 if (Cmd_Argc () != 2) {
93 Sys_Printf ("loadsky <name> : load a skybox\n");
94 return;
95 }
96
97 sw32_R_LoadSkys (Cmd_Argv (1));
98 }
99
100 void
sw32_R_PrintTimes(void)101 sw32_R_PrintTimes (void)
102 {
103 float r_time2;
104 float ms;
105
106 r_time2 = Sys_DoubleTime ();
107
108 ms = 1000 * (r_time2 - r_time1);
109
110 Sys_Printf ("%5.1f ms %3i/%3i/%3i poly %3i surf\n",
111 ms, sw32_c_faceclip, sw32_r_polycount, sw32_r_drawnpolycount, sw32_c_surf);
112 sw32_c_surf = 0;
113 }
114
115 void
sw32_R_PrintAliasStats(void)116 sw32_R_PrintAliasStats (void)
117 {
118 Sys_Printf ("%3i polygon model drawn\n", sw32_r_amodels_drawn);
119 }
120
121 void
sw32_R_TransformFrustum(void)122 sw32_R_TransformFrustum (void)
123 {
124 int i;
125 vec3_t v, v2;
126
127 for (i = 0; i < 4; i++) {
128 v[0] = sw32_screenedge[i].normal[2];
129 v[1] = -sw32_screenedge[i].normal[0];
130 v[2] = sw32_screenedge[i].normal[1];
131
132 v2[0] = v[1] * vright[0] + v[2] * vup[0] + v[0] * vpn[0];
133 v2[1] = v[1] * vright[1] + v[2] * vup[1] + v[0] * vpn[1];
134 v2[2] = v[1] * vright[2] + v[2] * vup[2] + v[0] * vpn[2];
135
136 VectorCopy (v2, sw32_view_clipplanes[i].normal);
137
138 sw32_view_clipplanes[i].dist = DotProduct (modelorg, v2);
139 }
140 }
141
142 void
sw32_TransformVector(const vec3_t in,vec3_t out)143 sw32_TransformVector (const vec3_t in, vec3_t out)
144 {
145 out[0] = DotProduct (in, vright);
146 out[1] = DotProduct (in, vup);
147 out[2] = DotProduct (in, vpn);
148 }
149
150 void
sw32_R_TransformPlane(plane_t * p,float * normal,float * dist)151 sw32_R_TransformPlane (plane_t *p, float *normal, float *dist)
152 {
153 float d;
154
155 d = DotProduct (r_origin, p->normal);
156 *dist = p->dist - d;
157 // TODO: when we have rotating entities, this will need to use the view matrix
158 sw32_TransformVector (p->normal, normal);
159 }
160
161 static void
R_SetUpFrustumIndexes(void)162 R_SetUpFrustumIndexes (void)
163 {
164 int i, j, *pindex;
165
166 pindex = sw32_r_frustum_indexes;
167
168 for (i = 0; i < 4; i++) {
169 for (j = 0; j < 3; j++) {
170 if (sw32_view_clipplanes[i].normal[j] < 0) {
171 pindex[j] = j;
172 pindex[j + 3] = j + 3;
173 } else {
174 pindex[j] = j + 3;
175 pindex[j + 3] = j;
176 }
177 }
178
179 // FIXME: do just once at start
180 sw32_pfrustum_indexes[i] = pindex;
181 pindex += 6;
182 }
183 }
184
185 void
sw32_R_SetupFrame(void)186 sw32_R_SetupFrame (void)
187 {
188 int edgecount;
189 vrect_t vrect;
190 float w, h;
191
192 // don't allow cheats in multiplayer
193 Cvar_SetValue (r_ambient, 0);
194 Cvar_SetValue (r_drawflat, 0);
195
196 if (r_numsurfs->int_val) {
197 if ((sw32_surface_p - sw32_surfaces) > sw32_r_maxsurfsseen)
198 sw32_r_maxsurfsseen = sw32_surface_p - sw32_surfaces;
199
200 Sys_Printf ("Used %ld of %ld surfs; %d max\n",
201 (long) (sw32_surface_p - sw32_surfaces),
202 (long) (sw32_surf_max - sw32_surfaces), sw32_r_maxsurfsseen);
203 }
204
205 if (r_numedges->int_val) {
206 edgecount = sw32_edge_p - sw32_r_edges;
207
208 if (edgecount > sw32_r_maxedgesseen)
209 sw32_r_maxedgesseen = edgecount;
210
211 Sys_Printf ("Used %d of %d edges; %d max\n", edgecount,
212 sw32_r_numallocatededges, sw32_r_maxedgesseen);
213 }
214
215 r_refdef.ambientlight = max (r_ambient->value, 0);
216
217 R_CheckVariables ();
218
219 R_AnimateLight ();
220 R_ClearEnts ();
221 r_framecount++;
222
223 sw32_numbtofpolys = 0;
224
225 // debugging
226 #if 0
227 r_refdef.vieworg[0] = 80;
228 r_refdef.vieworg[1] = 64;
229 r_refdef.vieworg[2] = 40;
230 r_refdef.viewangles[0] = 0;
231 r_refdef.viewangles[1] = 46.763641357;
232 r_refdef.viewangles[2] = 0;
233 #endif
234
235 // build the transformation matrix for the given view angles
236 VectorCopy (r_refdef.vieworg, modelorg);
237 VectorCopy (r_refdef.vieworg, r_origin);
238
239 AngleVectors (r_refdef.viewangles, vpn, vright, vup);
240 R_SetFrustum ();
241
242 // current viewleaf
243 r_viewleaf = Mod_PointInLeaf (r_origin, r_worldentity.model);
244
245 sw32_r_dowarpold = sw32_r_dowarp;
246 sw32_r_dowarp = r_waterwarp->int_val && (r_viewleaf->contents <=
247 CONTENTS_WATER);
248
249 if ((sw32_r_dowarp != sw32_r_dowarpold) || sw32_r_viewchanged) {
250 if (sw32_r_dowarp) {
251 if ((vid.width <= vid.maxwarpwidth)
252 && (vid.height <= vid.maxwarpheight)) {
253 vrect.x = 0;
254 vrect.y = 0;
255 vrect.width = vid.width;
256 vrect.height = vid.height;
257
258 R_SetVrect (&vrect, &r_refdef.vrect, vr_data.lineadj);
259 sw32_R_ViewChanged (vid.aspect);
260 } else {
261 w = vid.width;
262 h = vid.height;
263
264 if (w > vid.maxwarpwidth) {
265 h *= (float) vid.maxwarpwidth / w;
266 w = vid.maxwarpwidth;
267 }
268
269 if (h > vid.maxwarpheight) {
270 h = vid.maxwarpheight;
271 w *= (float) vid.maxwarpheight / h;
272 }
273
274 vrect.x = 0;
275 vrect.y = 0;
276 vrect.width = (int) w;
277 vrect.height = (int) h;
278
279 R_SetVrect (&vrect, &r_refdef.vrect,
280 (int) ((float) vr_data.lineadj *
281 (h / (float) vid.height)));
282 sw32_R_ViewChanged (vid.aspect * (h / w) * ((float) vid.width /
283 (float) vid.height));
284 }
285 } else {
286 vrect.x = 0;
287 vrect.y = 0;
288 vrect.width = vid.width;
289 vrect.height = vid.height;
290
291 r_refdef.vrect = scr_vrect;
292 sw32_R_ViewChanged (vid.aspect);
293 }
294
295 sw32_r_viewchanged = false;
296 }
297 // start off with just the four screen edge clip planes
298 sw32_R_TransformFrustum ();
299
300 // save base values
301 VectorCopy (vpn, base_vpn);
302 VectorCopy (vright, base_vright);
303 VectorCopy (vup, base_vup);
304 VectorCopy (modelorg, base_modelorg);
305
306 sw32_R_SetSkyFrame ();
307
308 R_SetUpFrustumIndexes ();
309
310 r_cache_thrash = false;
311
312 // clear frame counts
313 sw32_c_faceclip = 0;
314 sw32_r_polycount = 0;
315 sw32_r_drawnpolycount = 0;
316 sw32_r_amodels_drawn = 0;
317 sw32_r_outofsurfaces = 0;
318 sw32_r_outofedges = 0;
319
320 sw32_D_SetupFrame ();
321 }
322