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r_part.c
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1 /*
2 Copyright (C) 1997-2001 Id Software, Inc.
3 
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8 
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 
13 See the GNU General Public License for more details.
14 
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 
19 */
20 #include "r_local.h"
21 
22 vec3_t r_pright, r_pup, r_ppn;
23 
24 #define PARTICLE_33 0
25 #define PARTICLE_66 1
26 #define PARTICLE_OPAQUE 2
27 
28 typedef struct
29 {
30  particle_t *particle;
31  int level;
32  int color;
33 } partparms_t;
34 
35 static partparms_t partparms;
36 
37 #if id386 && !defined __linux__ && !defined __FreeBSD__
38 
39 static unsigned s_prefetch_address;
40 
41 /*
42 ** BlendParticleXX
43 **
44 ** Inputs:
45 ** EAX = color
46 ** EDI = pdest
47 **
48 ** Scratch:
49 ** EBX = scratch (dstcolor)
50 ** EBP = scratch
51 **
52 ** Outputs:
53 ** none
54 */
55 __declspec(naked) void BlendParticle33( void )
56 {
57  // return vid.alphamap[color + dstcolor*256];
58  __asm mov ebp, vid.alphamap
59  __asm xor ebx, ebx
60 
61  __asm mov bl, byte ptr [edi]
62  __asm shl ebx, 8
63 
64  __asm add ebp, ebx
65  __asm add ebp, eax
66 
67  __asm mov al, byte ptr [ebp]
68 
69  __asm mov byte ptr [edi], al
70 
71  __asm ret
72 }
73 
74 __declspec(naked) void BlendParticle66( void )
75 {
76  // return vid.alphamap[pcolor*256 + dstcolor];
77  __asm mov ebp, vid.alphamap
78  __asm xor ebx, ebx
79 
80  __asm shl eax, 8
81  __asm mov bl, byte ptr [edi]
82 
83  __asm add ebp, ebx
84  __asm add ebp, eax
85 
86  __asm mov al, byte ptr [ebp]
87 
88  __asm mov byte ptr [edi], al
89 
90  __asm ret
91 }
92 
93 __declspec(naked) void BlendParticle100( void )
94 {
95  __asm mov byte ptr [edi], al
96  __asm ret
97 }
98 
99 /*
100 ** R_DrawParticle (asm version)
101 **
102 ** Since we use __declspec( naked ) we don't have a stack frame
103 ** that we can use. Since I want to reserve EBP anyway, I tossed
104 ** all the important variables into statics. This routine isn't
105 ** meant to be re-entrant, so this shouldn't cause any problems
106 ** other than a slightly higher global memory footprint.
107 **
108 */
109 __declspec(naked) void R_DrawParticle( void )
110 {
111  static vec3_t local, transformed;
112  static float zi;
113  static int u, v, tmp;
114  static short izi;
115  static int ebpsave;
116 
117  static byte (*blendfunc)(void);
118 
119  /*
120  ** must be memvars since x86 can't load constants
121  ** directly. I guess I could use fld1, but that
122  ** actually costs one more clock than fld [one]!
123  */
124  static float particle_z_clip = PARTICLE_Z_CLIP;
125  static float one = 1.0F;
126  static float point_five = 0.5F;
127  static float eight_thousand_hex = 0x8000;
128 
129  /*
130  ** save trashed variables
131  */
132  __asm mov ebpsave, ebp
133  __asm push esi
134  __asm push edi
135 
136  /*
137  ** transform the particle
138  */
139  // VectorSubtract (pparticle->origin, r_origin, local);
140  __asm mov esi, partparms.particle
141  __asm fld dword ptr [esi+0] ; p_o.x
142  __asm fsub dword ptr [r_origin+0] ; p_o.x-r_o.x
143  __asm fld dword ptr [esi+4] ; p_o.y | p_o.x-r_o.x
144  __asm fsub dword ptr [r_origin+4] ; p_o.y-r_o.y | p_o.x-r_o.x
145  __asm fld dword ptr [esi+8] ; p_o.z | p_o.y-r_o.y | p_o.x-r_o.x
146  __asm fsub dword ptr [r_origin+8] ; p_o.z-r_o.z | p_o.y-r_o.y | p_o.x-r_o.x
147  __asm fxch st(2) ; p_o.x-r_o.x | p_o.y-r_o.y | p_o.z-r_o.z
148  __asm fstp dword ptr [local+0] ; p_o.y-r_o.y | p_o.z-r_o.z
149  __asm fstp dword ptr [local+4] ; p_o.z-r_o.z
150  __asm fstp dword ptr [local+8] ; (empty)
151 
152  // transformed[0] = DotProduct(local, r_pright);
153  // transformed[1] = DotProduct(local, r_pup);
154  // transformed[2] = DotProduct(local, r_ppn);
155  __asm fld dword ptr [local+0] ; l.x
156  __asm fmul dword ptr [r_pright+0] ; l.x*pr.x
157  __asm fld dword ptr [local+4] ; l.y | l.x*pr.x
158  __asm fmul dword ptr [r_pright+4] ; l.y*pr.y | l.x*pr.x
159  __asm fld dword ptr [local+8] ; l.z | l.y*pr.y | l.x*pr.x
160  __asm fmul dword ptr [r_pright+8] ; l.z*pr.z | l.y*pr.y | l.x*pr.x
161  __asm fxch st(2) ; l.x*pr.x | l.y*pr.y | l.z*pr.z
162  __asm faddp st(1), st ; l.x*pr.x + l.y*pr.y | l.z*pr.z
163  __asm faddp st(1), st ; l.x*pr.x + l.y*pr.y + l.z*pr.z
164  __asm fstp dword ptr [transformed+0] ; (empty)
165 
166  __asm fld dword ptr [local+0] ; l.x
167  __asm fmul dword ptr [r_pup+0] ; l.x*pr.x
168  __asm fld dword ptr [local+4] ; l.y | l.x*pr.x
169  __asm fmul dword ptr [r_pup+4] ; l.y*pr.y | l.x*pr.x
170  __asm fld dword ptr [local+8] ; l.z | l.y*pr.y | l.x*pr.x
171  __asm fmul dword ptr [r_pup+8] ; l.z*pr.z | l.y*pr.y | l.x*pr.x
172  __asm fxch st(2) ; l.x*pr.x | l.y*pr.y | l.z*pr.z
173  __asm faddp st(1), st ; l.x*pr.x + l.y*pr.y | l.z*pr.z
174  __asm faddp st(1), st ; l.x*pr.x + l.y*pr.y + l.z*pr.z
175  __asm fstp dword ptr [transformed+4] ; (empty)
176 
177  __asm fld dword ptr [local+0] ; l.x
178  __asm fmul dword ptr [r_ppn+0] ; l.x*pr.x
179  __asm fld dword ptr [local+4] ; l.y | l.x*pr.x
180  __asm fmul dword ptr [r_ppn+4] ; l.y*pr.y | l.x*pr.x
181  __asm fld dword ptr [local+8] ; l.z | l.y*pr.y | l.x*pr.x
182  __asm fmul dword ptr [r_ppn+8] ; l.z*pr.z | l.y*pr.y | l.x*pr.x
183  __asm fxch st(2) ; l.x*pr.x | l.y*pr.y | l.z*pr.z
184  __asm faddp st(1), st ; l.x*pr.x + l.y*pr.y | l.z*pr.z
185  __asm faddp st(1), st ; l.x*pr.x + l.y*pr.y + l.z*pr.z
186  __asm fstp dword ptr [transformed+8] ; (empty)
187 
188  /*
189  ** make sure that the transformed particle is not in front of
190  ** the particle Z clip plane. We can do the comparison in
191  ** integer space since we know the sign of one of the inputs
192  ** and can figure out the sign of the other easily enough.
193  */
194  // if (transformed[2] < PARTICLE_Z_CLIP)
195  // return;
196 
197  __asm mov eax, dword ptr [transformed+8]
198  __asm and eax, eax
199  __asm js end
200  __asm cmp eax, particle_z_clip
201  __asm jl end
202 
203  /*
204  ** project the point by initiating the 1/z calc
205  */
206  // zi = 1.0 / transformed[2];
207  __asm fld one
208  __asm fdiv dword ptr [transformed+8]
209 
210  /*
211  ** bind the blend function pointer to the appropriate blender
212  ** while we're dividing
213  */
214  //if ( level == PARTICLE_33 )
215  // blendparticle = BlendParticle33;
216  //else if ( level == PARTICLE_66 )
217  // blendparticle = BlendParticle66;
218  //else
219  // blendparticle = BlendParticle100;
220 
221  __asm cmp partparms.level, PARTICLE_66
222  __asm je blendfunc_66
223  __asm jl blendfunc_33
224  __asm lea ebx, BlendParticle100
225  __asm jmp done_selecting_blend_func
226 blendfunc_33:
227  __asm lea ebx, BlendParticle33
228  __asm jmp done_selecting_blend_func
229 blendfunc_66:
230  __asm lea ebx, BlendParticle66
231 done_selecting_blend_func:
232  __asm mov blendfunc, ebx
233 
234  // prefetch the next particle
235  __asm mov ebp, s_prefetch_address
236  __asm mov ebp, [ebp]
237 
238  // finish the above divide
239  __asm fstp zi
240 
241  // u = (int)(xcenter + zi * transformed[0] + 0.5);
242  // v = (int)(ycenter - zi * transformed[1] + 0.5);
243  __asm fld zi ; zi
244  __asm fmul dword ptr [transformed+0] ; zi * transformed[0]
245  __asm fld zi ; zi | zi * transformed[0]
246  __asm fmul dword ptr [transformed+4] ; zi * transformed[1] | zi * transformed[0]
247  __asm fxch st(1) ; zi * transformed[0] | zi * transformed[1]
248  __asm fadd xcenter ; xcenter + zi * transformed[0] | zi * transformed[1]
249  __asm fxch st(1) ; zi * transformed[1] | xcenter + zi * transformed[0]
250  __asm fld ycenter ; ycenter | zi * transformed[1] | xcenter + zi * transformed[0]
251  __asm fsubrp st(1), st(0) ; ycenter - zi * transformed[1] | xcenter + zi * transformed[0]
252  __asm fxch st(1) ; xcenter + zi * transformed[0] | ycenter + zi * transformed[1]
253  __asm fadd point_five ; xcenter + zi * transformed[0] + 0.5 | ycenter - zi * transformed[1]
254  __asm fxch st(1) ; ycenter - zi * transformed[1] | xcenter + zi * transformed[0] + 0.5
255  __asm fadd point_five ; ycenter - zi * transformed[1] + 0.5 | xcenter + zi * transformed[0] + 0.5
256  __asm fxch st(1) ; u | v
257  __asm fistp dword ptr [u] ; v
258  __asm fistp dword ptr [v] ; (empty)
259 
260  /*
261  ** clip out the particle
262  */
263 
264  // if ((v > d_vrectbottom_particle) ||
265  // (u > d_vrectright_particle) ||
266  // (v < d_vrecty) ||
267  // (u < d_vrectx))
268  // {
269  // return;
270  // }
271 
272  __asm mov ebx, u
273  __asm mov ecx, v
274  __asm cmp ecx, d_vrectbottom_particle
275  __asm jg end
276  __asm cmp ecx, d_vrecty
277  __asm jl end
278  __asm cmp ebx, d_vrectright_particle
279  __asm jg end
280  __asm cmp ebx, d_vrectx
281  __asm jl end
282 
283  /*
284  ** compute addresses of zbuffer, framebuffer, and
285  ** compute the Z-buffer reference value.
286  **
287  ** EBX = U
288  ** ECX = V
289  **
290  ** Outputs:
291  ** ESI = Z-buffer address
292  ** EDI = framebuffer address
293  */
294  // ESI = d_pzbuffer + (d_zwidth * v) + u;
295  __asm mov esi, d_pzbuffer ; esi = d_pzbuffer
296  __asm mov eax, d_zwidth ; eax = d_zwidth
297  __asm mul ecx ; eax = d_zwidth*v
298  __asm add eax, ebx ; eax = d_zwidth*v+u
299  __asm shl eax, 1 ; eax = 2*(d_zwidth*v+u)
300  __asm add esi, eax ; esi = ( short * ) ( d_pzbuffer + ( d_zwidth * v ) + u )
301 
302  // initiate
303  // izi = (int)(zi * 0x8000);
304  __asm fld zi
305  __asm fmul eight_thousand_hex
306 
307  // EDI = pdest = d_viewbuffer + d_scantable[v] + u;
308  __asm lea edi, [d_scantable+ecx*4]
309  __asm mov edi, [edi]
310  __asm add edi, d_viewbuffer
311  __asm add edi, ebx
312 
313  // complete
314  // izi = (int)(zi * 0x8000);
315  __asm fistp tmp
316  __asm mov eax, tmp
317  __asm mov izi, ax
318 
319  /*
320  ** determine the screen area covered by the particle,
321  ** which also means clamping to a min and max
322  */
323  // pix = izi >> d_pix_shift;
324  __asm xor edx, edx
325  __asm mov dx, izi
326  __asm mov ecx, d_pix_shift
327  __asm shr dx, cl
328 
329  // if (pix < d_pix_min)
330  // pix = d_pix_min;
331  __asm cmp edx, d_pix_min
332  __asm jge check_pix_max
333  __asm mov edx, d_pix_min
334  __asm jmp skip_pix_clamp
335 
336  // else if (pix > d_pix_max)
337  // pix = d_pix_max;
338 check_pix_max:
339  __asm cmp edx, d_pix_max
340  __asm jle skip_pix_clamp
341  __asm mov edx, d_pix_max
342 
343 skip_pix_clamp:
344 
345  /*
346  ** render the appropriate pixels
347  **
348  ** ECX = count (used for inner loop)
349  ** EDX = count (used for outer loop)
350  ** ESI = zbuffer
351  ** EDI = framebuffer
352  */
353  __asm mov ecx, edx
354 
355  __asm cmp ecx, 1
356  __asm ja over
357 
358 over:
359 
360  /*
361  ** at this point:
362  **
363  ** ECX = count
364  */
365  __asm push ecx
366  __asm push edi
367  __asm push esi
368 
369 top_of_pix_vert_loop:
370 
371 top_of_pix_horiz_loop:
372 
373  // for ( ; count ; count--, pz += d_zwidth, pdest += screenwidth)
374  // {
375  // for (i=0 ; i<pix ; i++)
376  // {
377  // if (pz[i] <= izi)
378  // {
379  // pdest[i] = blendparticle( color, pdest[i] );
380  // }
381  // }
382  // }
383  __asm xor eax, eax
384 
385  __asm mov ax, word ptr [esi]
386 
387  __asm cmp ax, izi
388  __asm jg end_of_horiz_loop
389 
390 #if ENABLE_ZWRITES_FOR_PARTICLES
391  __asm mov bp, izi
392  __asm mov word ptr [esi], bp
393 #endif
394 
395  __asm mov eax, partparms.color
396 
397  __asm call [blendfunc]
398 
399  __asm add edi, 1
400  __asm add esi, 2
401 
402 end_of_horiz_loop:
403 
404  __asm dec ecx
405  __asm jnz top_of_pix_horiz_loop
406 
407  __asm pop esi
408  __asm pop edi
409 
410  __asm mov ebp, d_zwidth
411  __asm shl ebp, 1
412 
413  __asm add esi, ebp
414  __asm add edi, [r_screenwidth]
415 
416  __asm pop ecx
417  __asm push ecx
418 
419  __asm push edi
420  __asm push esi
421 
422  __asm dec edx
423  __asm jnz top_of_pix_vert_loop
424 
425  __asm pop ecx
426  __asm pop ecx
427  __asm pop ecx
428 
429 end:
430  __asm pop edi
431  __asm pop esi
432  __asm mov ebp, ebpsave
433  __asm ret
434 }
435 
436 #else
437 
438 static byte BlendParticle33( int pcolor, int dstcolor )
439 {
440  return vid.alphamap[pcolor + dstcolor*256];
441 }
442 
443 static byte BlendParticle66( int pcolor, int dstcolor )
444 {
445  return vid.alphamap[pcolor*256+dstcolor];
446 }
447 
448 static byte BlendParticle100( int pcolor, int dstcolor )
449 {
450  dstcolor = dstcolor;
451  return pcolor;
452 }
453 
454 /*
455 ** R_DrawParticle
456 **
457 ** Yes, this is amazingly slow, but it's the C reference
458 ** implementation and should be both robust and vaguely
459 ** understandable. The only time this path should be
460 ** executed is if we're debugging on x86 or if we're
461 ** recompiling and deploying on a non-x86 platform.
462 **
463 ** To minimize error and improve readability I went the
464 ** function pointer route. This exacts some overhead, but
465 ** it pays off in clean and easy to understand code.
466 */
467 void R_DrawParticle( void )
468 {
469  particle_t *pparticle = partparms.particle;
470  int level = partparms.level;
471  vec3_t local, transformed;
472  float zi;
473  byte *pdest;
474  short *pz;
475  int color = pparticle->color;
476  int i, izi, pix, count, u, v;
477  byte (*blendparticle)( int, int );
478 
479  /*
480  ** transform the particle
481  */
482  VectorSubtract (pparticle->origin, r_origin, local);
483 
484  transformed[0] = DotProduct(local, r_pright);
485  transformed[1] = DotProduct(local, r_pup);
486  transformed[2] = DotProduct(local, r_ppn);
487 
488  if (transformed[2] < PARTICLE_Z_CLIP)
489  return;
490 
491  /*
492  ** bind the blend function pointer to the appropriate blender
493  */
494  if ( level == PARTICLE_33 )
495  blendparticle = BlendParticle33;
496  else if ( level == PARTICLE_66 )
497  blendparticle = BlendParticle66;
498  else
499  blendparticle = BlendParticle100;
500 
501  /*
502  ** project the point
503  */
504  // FIXME: preadjust xcenter and ycenter
505  zi = 1.0 / transformed[2];
506  u = (int)(xcenter + zi * transformed[0] + 0.5);
507  v = (int)(ycenter - zi * transformed[1] + 0.5);
508 
509  if ((v > d_vrectbottom_particle) ||
510  (u > d_vrectright_particle) ||
511  (v < d_vrecty) ||
512  (u < d_vrectx))
513  {
514  return;
515  }
516 
517  /*
518  ** compute addresses of zbuffer, framebuffer, and
519  ** compute the Z-buffer reference value.
520  */
521  pz = d_pzbuffer + (d_zwidth * v) + u;
522  pdest = d_viewbuffer + d_scantable[v] + u;
523  izi = (int)(zi * 0x8000);
524 
525  /*
526  ** determine the screen area covered by the particle,
527  ** which also means clamping to a min and max
528  */
529  pix = izi >> d_pix_shift;
530  if (pix < d_pix_min)
531  pix = d_pix_min;
532  else if (pix > d_pix_max)
533  pix = d_pix_max;
534 
535  /*
536  ** render the appropriate pixels
537  */
538  count = pix;
539 
540  switch (level) {
541  case PARTICLE_33 :
542  for ( ; count ; count--, pz += d_zwidth, pdest += r_screenwidth)
543  {
544 //FIXME--do it in blocks of 8?
545  for (i=0 ; i<pix ; i++)
546  {
547  if (pz[i] <= izi)
548  {
549  pz[i] = izi;
550  pdest[i] = vid.alphamap[color + ((int)pdest[i]<<8)];
551  }
552  }
553  }
554  break;
555 
556  case PARTICLE_66 :
557  for ( ; count ; count--, pz += d_zwidth, pdest += r_screenwidth)
558  {
559  for (i=0 ; i<pix ; i++)
560  {
561  if (pz[i] <= izi)
562  {
563  pz[i] = izi;
564  pdest[i] = vid.alphamap[(color<<8) + (int)pdest[i]];
565  }
566  }
567  }
568  break;
569 
570  default: //100
571  for ( ; count ; count--, pz += d_zwidth, pdest += r_screenwidth)
572  {
573  for (i=0 ; i<pix ; i++)
574  {
575  if (pz[i] <= izi)
576  {
577  pz[i] = izi;
578  pdest[i] = color;
579  }
580  }
581  }
582  break;
583  }
584 }
585 
586 #endif // !id386
587 
588 /*
589 ** R_DrawParticles
590 **
591 ** Responsible for drawing all of the particles in the particle list
592 ** throughout the world. Doesn't care if we're using the C path or
593 ** if we're using the asm path, it simply assigns a function pointer
594 ** and goes.
595 */
596 void R_DrawParticles (void)
597 {
598  particle_t *p;
599  int i;
600 
601 #if id386 && !defined __linux__ && !defined __FreeBSD__
602  extern unsigned long fpu_sp24_cw, fpu_chop_cw;
603 #endif
604 
605  VectorScale( vright, xscaleshrink, r_pright );
606  VectorScale( vup, yscaleshrink, r_pup );
607  VectorCopy( vpn, r_ppn );
608 
609 #if id386 && !defined __linux__ && !defined __FreeBSD__
610  __asm fldcw word ptr [fpu_sp24_cw]
611 #endif
612 
613  for (p=r_newrefdef.particles, i=0 ; i<r_newrefdef.num_particles ; i++,p++)
614  {
615 
616  if ( p->alpha > 0.66 )
617  partparms.level = PARTICLE_OPAQUE;
618  else if ( p->alpha > 0.33 )
619  partparms.level = PARTICLE_66;
620  else
621  partparms.level = PARTICLE_33;
622 
623  partparms.particle = p;
624  partparms.color = p->color;
625 
626 #if id386 && !defined __linux__ && !defined __FreeBSD__
627  if ( i < r_newrefdef.num_particles-1 )
628  s_prefetch_address = ( unsigned int ) ( p + 1 );
629  else
630  s_prefetch_address = ( unsigned int ) r_newrefdef.particles;
631 #endif
632 
633  R_DrawParticle();
634  }
635 
636 #if id386 && !defined __linux__ && !defined __FreeBSD__
637  __asm fldcw word ptr [fpu_chop_cw]
638 #endif
639 
640 }
641 
yscaleshrink
float yscaleshrink
Definition: r_local.h:541
int
CONST PIXELFORMATDESCRIPTOR int
Definition: qgl_win.c:35
VectorSubtract
#define VectorSubtract(a, b, c)
Definition: q_shared.h:156
v
GLdouble v
Definition: qgl_win.c:143
st
spawn_temp_t st
Definition: g_main.c:27
vright
vec3_t vright
Definition: r_main.c:68
VectorScale
void VectorScale(vec3_t in, vec_t scale, vec3_t out)
Definition: q_shared.c:782
i
int i
Definition: q_shared.c:305
d_viewbuffer
pixel_t * d_viewbuffer
Definition: r_main.c:181
ebp
LEnter16_16 al cl movb ah addl ebp
Definition: block16.h:5
PARTICLE_66
#define PARTICLE_66
Definition: r_part.c:25
r_origin
vec3_t r_origin
Definition: r_main.c:69
PARTICLE_Z_CLIP
#define PARTICLE_Z_CLIP
Definition: d_ifacea.h:37
r_pright
vec3_t r_pright
Definition: r_part.c:22
r_local.h
partparms_t
Definition: r_part.c:28
vup
vec3_t vup
Definition: r_main.c:66
PARTICLE_OPAQUE
#define PARTICLE_OPAQUE
Definition: r_part.c:26
partparms_t::color
int color
Definition: r_part.c:32
byte
unsigned char byte
Definition: q_shared.h:55
partparms_t::particle
particle_t * particle
Definition: r_part.c:30
d_pix_max
int d_pix_max
Definition: r_local.h:498
xscaleshrink
float xscaleshrink
Definition: r_main.c:78
d_vrectx
int d_vrectx
Definition: r_misc.c:38
BlendParticle33
static byte BlendParticle33(int pcolor, int dstcolor)
Definition: r_part.c:438
particle_t::alpha
float alpha
Definition: ref.h:100
d_pix_shift
int d_pix_shift
Definition: r_local.h:498
partparms_t::level
int level
Definition: r_part.c:31
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refdef_t r_newrefdef
Definition: r_main.c:36
DotProduct
#define DotProduct(x, y)
Definition: q_shared.h:155
r_pup
vec3_t r_pup
Definition: r_part.c:22
d_scantable
int d_scantable[MAXHEIGHT]
Definition: r_misc.c:42
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Definition: ref.h:96
refdef_t::num_particles
int num_particles
Definition: ref.h:140
r_screenwidth
int r_screenwidth
Definition: r_main.c:81
ycenter
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Definition: r_local.h:538
particle_t::origin
vec3_t origin
Definition: ref.h:98
al
LEnter16_8 al cl movb ah addl edx movb ch esi al edx movb al
Definition: block8.h:11
d_pix_min
int d_pix_min
Definition: r_misc.c:40
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#define VectorCopy(a, b)
Definition: q_shared.h:158
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Definition: ref.h:141
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int d_vrectbottom_particle
Definition: r_local.h:496
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GLint level
Definition: qgl_win.c:116
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unsigned int d_zwidth
Definition: r_local.h:502
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int d_vrectright_particle
Definition: r_local.h:496
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Definition: ref.h:99
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static partparms_t partparms
Definition: r_part.c:35
d_vrecty
int d_vrecty
Definition: r_local.h:496
R_DrawParticles
void R_DrawParticles(void)
Definition: r_part.c:596
BlendParticle100
static byte BlendParticle100(int pcolor, int dstcolor)
Definition: r_part.c:448
R_DrawParticle
void R_DrawParticle(void)
Definition: r_part.c:467
BlendParticle66
static byte BlendParticle66(int pcolor, int dstcolor)
Definition: r_part.c:443
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short * d_pzbuffer
Definition: r_main.c:182
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vec3_t r_ppn
Definition: r_part.c:22
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Definition: r_main.c:75
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pixel_t * alphamap
Definition: r_local.h:90
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Definition: cl_main.c:106
ax
LEnter16_16 al cl movb ah addl edx movb ch esi ax edx movw ax
Definition: block16.h:11
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vec3_t vpn
Definition: r_main.c:67
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Definition: q_shared.h:127
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#define PARTICLE_33
Definition: r_part.c:24
void
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Definition: qgl_win.c:128
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Definition: r_main.c:24