7 #include <caml/alloc.h>
8 #include <caml/memory.h>
13 enum {V_IDX
, N_IDX
, UV_IDX
, C_IDX
, COUNT
};
15 #define ALNN(n, i) (((i)+(n-1))&~(n-1))
24 /* Altivec code derived from: */
25 /* http://www.freevec.org/category/simd/algorithms/algebra/matrix_operations */
28 #define simd_alloc(b, s) memalign (b, s)
29 #define A16 __attribute__ ((aligned (16)))
30 #define AL16(i) ALNN (16, i)
31 #define AL32(i) ALNN (32, i)
33 #define simd_alloc(b, s) malloc (s)
69 static State glob_state
;
72 static void copy_vertices (float *p
, int num_vertices
, value a_v
)
76 for (i
= 0, k
= 0; i
< num_vertices
; ++i
, p
+= 3) {
77 p
[0] = Double_field (a_v
, k
++);
78 p
[1] = Double_field (a_v
, k
++);
79 p
[2] = Double_field (a_v
, k
++);
83 static void set_geom (State
*s
, void **ptrs
, value vertexa_v
, value normala_v
,
84 value uva_v
, value skin_v
, value colors_v
)
91 num_vertices
= Wosize_val (vertexa_v
) / (Double_wosize
* 3);
93 copy_vertices (ptrs
[V_IDX
], num_vertices
, vertexa_v
);
94 copy_vertices (ptrs
[N_IDX
], num_vertices
, normala_v
);
96 for (i
= 0, p
= ptrs
[UV_IDX
]; i
< num_vertices
* 2; ++i
) {
97 p
[i
] = Double_field (uva_v
, i
);
99 memcpy (ptrs
[C_IDX
], String_val (colors_v
), num_vertices
* 4);
102 for (i
= 0; i
< num_vertices
; ++i
) {
106 v
= Field (skin_v
, i
);
107 skin
[i
].boneinfo
= Int_val (Field (v
, 3));
109 for (j
= 0; j
< Int_val (Field (v
, 3)); ++j
) {
112 const int shifts
[] = {2,12,22};
114 val
= Double_val (Bp_val (Field (v
, j
)));
116 boneindex
= (int) val
;
117 skin
[i
].weights
[j
] = val
- boneindex
;
118 skin
[i
].boneinfo
|= (boneindex
+ 1) << shifts
[j
];
123 static void skin_init (State
*s
, value vertexa_v
, value normala_v
,
124 value uva_v
, value skin_v
, value colors_v
)
127 GLsizei sizevn
, sizev
, sizeu
, sizec
;
130 s
->num_vertices
= Wosize_val (vertexa_v
) / (Double_wosize
* 3);
132 sizev
= AL32 (3 * sizeof (GLfloat
) * s
->num_vertices
);
133 sizeu
= 2 * sizeof (GLfloat
) * s
->num_vertices
;
134 sizec
= 4 * s
->num_vertices
;
138 p
= simd_alloc (16, AL16 (sizevn
) + s
->num_vertices
* sizeof (struct skin
));
139 s
->skin
= (struct skin
*) (p
+ AL16 (sizevn
));
140 s
->ptrs
[0] = ptrs
[V_IDX
] = p
;
141 ptrs
[N_IDX
] = p
+ sizev
;
143 p
= stat_alloc (sizec
+ sizeu
);
144 s
->ptrs
[1] = ptrs
[UV_IDX
] = p
;
145 ptrs
[C_IDX
] = p
+ sizeu
;
147 set_geom (s
, ptrs
, vertexa_v
, normala_v
, uva_v
, skin_v
, colors_v
);
150 glGenBuffers (2, s
->bufid
);
152 glBindBuffer (GL_ARRAY_BUFFER
, s
->bufid
[0]);
153 glBufferData (GL_ARRAY_BUFFER
, sizevn
, s
->ptrs
[0], GL_DYNAMIC_DRAW
);
155 glBindBuffer (GL_ARRAY_BUFFER
, s
->bufid
[1]);
156 glBufferData (GL_ARRAY_BUFFER
, sizeu
+sizec
, s
->ptrs
[1], GL_STATIC_DRAW
);
158 glBindBuffer (GL_ARRAY_BUFFER
, 0);
159 stat_free (s
->ptrs
[1]);
163 s
->bufs
[N_IDX
] = p
+ sizev
;
165 s
->bufs
[C_IDX
] = p
+ sizeu
;
168 p
= simd_alloc (DSTAL
, sizevn
);
170 s
->bufs
[N_IDX
] = p
+ sizev
;
171 s
->bufs
[UV_IDX
] = ptrs
[UV_IDX
];
172 s
->bufs
[C_IDX
] = ptrs
[C_IDX
];
174 memcpy (p
, s
->ptrs
[0], sizevn
);
178 CAMLprim value
ml_skin_draw_begin (value unit_v
)
180 State
*s
= &glob_state
;
184 glEnableClientState (GL_VERTEX_ARRAY
);
185 glEnableClientState (GL_NORMAL_ARRAY
);
186 glEnableClientState (GL_TEXTURE_COORD_ARRAY
);
187 glEnableClientState (GL_COLOR_ARRAY
);
189 if (use_vbo
) glBindBuffer (GL_ARRAY_BUFFER
, s
->bufid
[0]);
190 glVertexPointer (3, GL_FLOAT
, 3 * sizeof (GLfloat
), s
->bufs
[V_IDX
]);
191 glNormalPointer (GL_FLOAT
, 3 * sizeof (GLfloat
), s
->bufs
[N_IDX
]);
193 if (use_vbo
) glBindBuffer (GL_ARRAY_BUFFER
, s
->bufid
[1]);
194 glTexCoordPointer (2, GL_FLOAT
, 0, s
->bufs
[UV_IDX
]);
195 glColorPointer (4, GL_UNSIGNED_BYTE
, 0, s
->bufs
[C_IDX
]);
200 CAMLprim value
ml_skin_draw_end (value unit_v
)
203 glDisableClientState (GL_VERTEX_ARRAY
);
204 glDisableClientState (GL_NORMAL_ARRAY
);
205 glDisableClientState (GL_TEXTURE_COORD_ARRAY
);
206 glDisableClientState (GL_COLOR_ARRAY
);
207 if (use_vbo
) glBindBuffer (GL_ARRAY_BUFFER
, 0);
211 CAMLprim value
ml_skin_init (value use_vbo_v
, value geom_v
)
213 CAMLparam2 (use_vbo_v
, geom_v
);
214 CAMLlocal5 (vertexa_v
, normala_v
, uva_v
, skin_v
, colors_v
);
215 State
*s
= &glob_state
;
217 use_vbo
= Bool_val (use_vbo_v
);
223 GETPA (BufferSubData
);
228 vertexa_v
= Field (geom_v
, 0);
229 normala_v
= Field (geom_v
, 1);
230 uva_v
= Field (geom_v
, 2);
231 skin_v
= Field (geom_v
, 3);
232 colors_v
= Field (geom_v
, 4);
234 skin_init (s
, vertexa_v
, normala_v
, uva_v
, skin_v
, colors_v
);
235 CAMLreturn (Val_unit
);
240 #include <sys/time.h>
241 static double now (void)
245 if (gettimeofday (&tv
, NULL
)) err (1, "gettimeofday");
246 return tv
.tv_sec
+ tv
.tv_usec
* 1e-6;
252 #define DCB(o, b, i) __asm__ __volatile__ (#o " %0, %1" ::"b"(b),"r"(i))
254 static vector
float appbones (State
*s
,
268 vector
float vz
= (vector
float) vec_splat_u32 (0);
269 vector
float v
, w
, n
;
270 vector
unsigned char S
= {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4<<3};
273 w
= vec_ld (0, skin
->weights
);
275 num_bones
= skin
->boneinfo
& 3;
276 bone_index
= skin
->boneinfo
>> 2;
277 for (j
= 0; j
< num_bones
; ++j
) {
278 vector
float t0
, t1
, t2
, t3
, t4
, t5
, r0
, r1
, r2
, r3
, vw
;
280 b
= &s
->bones
[bone_index
& 0x3ff];
282 vw
= vec_splat (w
, 0);
285 r0
= vec_ld ( 0, b
->cm
);
286 r1
= vec_ld (16, b
->cm
);
287 r2
= vec_ld (32, b
->cm
);
288 r3
= vec_ld (48, b
->cm
);
290 t0
= vec_madd (r0
, x
, r3
);
291 t1
= vec_madd (r1
, y
, t0
);
292 t2
= vec_madd (r2
, z
, t1
);
293 v
= vec_madd (t2
, vw
, v
);
295 t3
= vec_madd (r0
, nx
, vz
);
296 t4
= vec_madd (r1
, ny
, t3
);
297 t5
= vec_madd (r2
, nz
, t4
);
298 n
= vec_madd (t5
, vw
, n
);
307 static void translate (State
*s
, float *vdst
, float *ndst
)
311 float *vsrc
= s
->ptrs
[0];
312 float *nsrc
= vsrc
+ AL16 (s
->num_vertices
* 3);
313 struct skin
*skin
= s
->skin
;
316 double S
= now (), E
;
320 vector
unsigned char p0
=
321 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 16, 17, 18, 19 };
322 vector
unsigned char p1
=
323 { 4, 5, 6, 7, 8, 9, 10, 11, 16, 17, 18, 19, 20, 21, 22, 23 };
324 vector
unsigned char p2
=
325 { 8, 9, 10, 11, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27 };
327 for (i
= 0, j
= 0; i
< s
->num_vertices
>> 2; ++i
, j
+= 48) {
328 vector
float v0
, v1
, v2
, n0
, n1
, n2
;
329 vector
float vx
, vy
, vz
, nx
, ny
, nz
;
330 vector
float vr0
, vr1
, vr2
, vr3
;
331 vector
float nr0
, nr1
, nr2
, nr3
;
339 DCB (dcbz
, vdst
, j
+ 32);
340 DCB (dcbz
, ndst
, j
+ 32);
344 DCB (dcbt
, skin
+ 1, 0);
345 DCB (dcbt
, skin
+ 2, 0);
346 DCB (dcbt
, skin
+ 3, 0);
348 DCB (dcbt
, vsrc
, j
+ 64);
349 DCB (dcbt
, nsrc
, j
+ 64);
350 DCB (dcbt
, vsrc
, j
+ 96);
351 DCB (dcbt
, nsrc
, j
+ 96);
354 v0
= vec_ld (j
, vsrc
);
355 v1
= vec_ld (j
+ 16, vsrc
);
356 v2
= vec_ld (j
+ 32, vsrc
);
357 n0
= vec_ld (j
, nsrc
);
358 n1
= vec_ld (j
+ 16, nsrc
);
359 n2
= vec_ld (j
+ 32, nsrc
);
361 /* First vertex/normal */
362 vx
= vec_splat (v0
, 0);
363 vy
= vec_splat (v0
, 1);
364 vz
= vec_splat (v0
, 2);
365 nx
= vec_splat (n0
, 0);
366 ny
= vec_splat (n0
, 1);
367 nz
= vec_splat (n0
, 2);
369 vr0
= appbones (s
, skin
, vx
, vy
, vz
, nx
, ny
, nz
, &nr0
);
372 /* Second vertex/normal */
373 vx
= vec_splat (v0
, 3);
374 vy
= vec_splat (v1
, 0);
375 vz
= vec_splat (v1
, 1);
376 nx
= vec_splat (n0
, 3);
377 ny
= vec_splat (n1
, 0);
378 nz
= vec_splat (n1
, 1);
380 vr1
= appbones (s
, skin
, vx
, vy
, vz
, nx
, ny
, nz
, &nr1
);
383 /* Third vertex/normal */
384 vx
= vec_splat (v1
, 2);
385 vy
= vec_splat (v1
, 3);
386 vz
= vec_splat (v2
, 0);
387 nx
= vec_splat (n1
, 2);
388 ny
= vec_splat (n1
, 3);
389 nz
= vec_splat (n2
, 0);
391 vr2
= appbones (s
, skin
, vx
, vy
, vz
, nx
, ny
, nz
, &nr2
);
394 /* Fourth vertex/normal */
395 vx
= vec_splat (v2
, 1);
396 vy
= vec_splat (v2
, 2);
397 vz
= vec_splat (v2
, 3);
398 nx
= vec_splat (n2
, 1);
399 ny
= vec_splat (n2
, 2);
400 nz
= vec_splat (n2
, 3);
402 vr3
= appbones (s
, skin
, vx
, vy
, vz
, nx
, ny
, nz
, &nr3
);
406 v0
= vec_perm (vr0
, vr1
, p0
);
407 v1
= vec_perm (vr1
, vr2
, p1
);
408 v2
= vec_perm (vr2
, vr3
, p2
);
410 n0
= vec_perm (nr0
, nr1
, p0
);
411 n1
= vec_perm (nr1
, nr2
, p1
);
412 n2
= vec_perm (nr2
, nr3
, p2
);
415 vec_st (v0
, j
, vdst
);
416 vec_st (v1
, j
+ 16, vdst
);
417 vec_st (v2
, j
+ 32, vdst
);
419 vec_st (n0
, j
, ndst
);
420 vec_st (n1
, j
+ 16, ndst
);
421 vec_st (n2
, j
+ 32, ndst
);
433 for (; i
< s
->num_vertices
; ++i
, vsrc
+= 3, nsrc
+= 3, vdst
+= 3, ndst
+= 3,
436 int num_bones
, bone_index
;
437 float v
[3] = {0,0,0}, n
[3] = {0,0,0}, v0
[4], v1
[4], w
;
439 num_bones
= skin
->boneinfo
& 3;
440 bone_index
= skin
->boneinfo
>> 2;
441 for (j
= 0; j
< num_bones
; ++j
) {
442 w
= skin
->weights
[j
];
443 b
= &s
->bones
[bone_index
& 0x3ff];
446 mapply_to_point (v1
, b
->cm
, vsrc
);
451 mapply_to_vector (v0
, b
->cm
, nsrc
);
466 printf ("took %f sec\n", E
- S
);
470 CAMLprim value
ml_skin_set_skel (value skel_v
)
476 CAMLlocal2 (v
, floats_v
);
477 State
*s
= &glob_state
;
479 s
->num_bones
= Wosize_val (skel_v
);
480 size
= (s
->num_bones
+ 1) * sizeof (struct bone
);
481 s
->bones
= b
= simd_alloc (16, size
);
491 for (i
= 0; i
< s
->num_bones
; ++i
, ++b
) {
492 v
= Field (skel_v
, i
);
493 floats_v
= Field (v
, 1);
495 b
->parent
= Int_val (Field (v
, 0)) + 1;
497 b
->v
[0] = Double_field (floats_v
, 1);
498 b
->v
[1] = Double_field (floats_v
, 2);
499 b
->v
[2] = Double_field (floats_v
, 3);
501 b
->q
[0] = Double_field (floats_v
, 5);
502 b
->q
[1] = Double_field (floats_v
, 6);
503 b
->q
[2] = Double_field (floats_v
, 7);
504 b
->q
[3] = Double_field (floats_v
, 8);
508 for (i
= 0; i
< s
->num_bones
; ++i
, ++b
) {
510 struct bone
*parent
= &s
->bones
[b
->parent
];
512 qapply (v
, parent
->mq
, b
->v
);
513 qcompose (b
->mq
, b
->q
, parent
->mq
);
514 vadd (b
->mv
, v
, parent
->mv
);
518 b
->cm
[11] = b
->mv
[2];
522 CAMLreturn (Val_unit
);
525 CAMLprim value
ml_skin_set_anim (value anim_v
)
529 CAMLlocal1 (floats_v
);
530 State
*s
= &glob_state
;
531 struct bone
*b
= s
->bones
+ 1;
533 for (i
= 0; i
< s
->num_bones
; ++i
, ++b
) {
534 floats_v
= Field (anim_v
, i
);
535 b
->aq
[0] = Double_field (floats_v
, 0);
536 b
->aq
[1] = Double_field (floats_v
, 1);
537 b
->aq
[2] = Double_field (floats_v
, 2);
538 b
->aq
[3] = Double_field (floats_v
, 3);
542 for (i
= 0; i
< s
->num_bones
; ++i
, ++b
) {
543 float v
[4], v1
[4], q
[4], q1
[4];
544 struct bone
*parent
= &s
->bones
[b
->parent
];
546 qapply (v
, parent
->amq
, b
->v
);
547 qcompose (b
->amq
, b
->aq
, parent
->amq
);
548 vadd (b
->amv
, v
, parent
->amv
);
550 qconjugate (q1
, b
->mq
);
551 qcompose (q
, q1
, b
->amq
);
553 qapply (v
, q
, b
->mv
);
554 vsub (v1
, b
->amv
, v
);
555 q2matrixt (b
->cm
, q
, v1
);
558 CAMLreturn (Val_unit
);
561 CAMLprim value
ml_skin_anim (value unit_v
)
566 State
*s
= &glob_state
;
569 glBindBuffer (GL_ARRAY_BUFFER
, s
->bufid
[0]);
570 vdst
= ndst
= glMapBuffer (GL_ARRAY_BUFFER
, GL_WRITE_ONLY
);
571 if (!vdst
) caml_failwith ("glMapBuffer failed");
573 ndst
+= (float *) s
->bufs
[N_IDX
] - (float *) s
->bufs
[V_IDX
];
576 vdst
= s
->bufs
[V_IDX
];
577 ndst
= s
->bufs
[N_IDX
];
580 translate (s
, vdst
, ndst
);
583 ret
= glUnmapBuffer (GL_ARRAY_BUFFER
);
584 if (ret
== GL_FALSE
) caml_failwith ("glUnmapBuffer failed");
587 CAMLreturn (Val_unit
);
590 #ifndef GL_GENERATE_MIPMAP
591 #define GL_GENERATE_MIPMAP 0x8191
594 CAMLprim value
ml_set_generate_mipmaps (value unit_v
)
597 glTexParameteri (GL_TEXTURE_2D
, GL_GENERATE_MIPMAP
, GL_TRUE
);