t_vertex_sse.c revision 6e29a3c8e2dc920b6216a0df6357abd8234f1ec4
1/* 2 * Copyright 2003 Tungsten Graphics, inc. 3 * All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * on the rights to use, copy, modify, merge, publish, distribute, sub 9 * license, and/or sell copies of the Software, and to permit persons to whom 10 * the Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice (including the next 13 * paragraph) shall be included in all copies or substantial portions of the 14 * Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 19 * TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 22 * USE OR OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: 25 * Keith Whitwell <keithw@tungstengraphics.com> 26 */ 27 28#include "main/glheader.h" 29#include "main/context.h" 30#include "main/colormac.h" 31#include "main/simple_list.h" 32#include "main/enums.h" 33#include "t_context.h" 34#include "t_vertex.h" 35 36#if defined(USE_SSE_ASM) 37 38#include "x86/rtasm/x86sse.h" 39#include "x86/common_x86_asm.h" 40 41 42/** 43 * Number of bytes to allocate for generated SSE functions 44 */ 45#define MAX_SSE_CODE_SIZE 1024 46 47 48#define X 0 49#define Y 1 50#define Z 2 51#define W 3 52 53 54struct x86_program { 55 struct x86_function func; 56 57 GLcontext *ctx; 58 GLboolean inputs_safe; 59 GLboolean outputs_safe; 60 GLboolean have_sse2; 61 62 struct x86_reg identity; 63 struct x86_reg chan0; 64}; 65 66 67static struct x86_reg get_identity( struct x86_program *p ) 68{ 69 return p->identity; 70} 71 72static void emit_load4f_4( struct x86_program *p, 73 struct x86_reg dest, 74 struct x86_reg arg0 ) 75{ 76 sse_movups(&p->func, dest, arg0); 77} 78 79static void emit_load4f_3( struct x86_program *p, 80 struct x86_reg dest, 81 struct x86_reg arg0 ) 82{ 83 /* Have to jump through some hoops: 84 * 85 * c 0 0 0 86 * c 0 0 1 87 * 0 0 c 1 88 * a b c 1 89 */ 90 sse_movss(&p->func, dest, x86_make_disp(arg0, 8)); 91 sse_shufps(&p->func, dest, get_identity(p), SHUF(X,Y,Z,W) ); 92 sse_shufps(&p->func, dest, dest, SHUF(Y,Z,X,W) ); 93 sse_movlps(&p->func, dest, arg0); 94} 95 96static void emit_load4f_2( struct x86_program *p, 97 struct x86_reg dest, 98 struct x86_reg arg0 ) 99{ 100 /* Initialize from identity, then pull in low two words: 101 */ 102 sse_movups(&p->func, dest, get_identity(p)); 103 sse_movlps(&p->func, dest, arg0); 104} 105 106static void emit_load4f_1( struct x86_program *p, 107 struct x86_reg dest, 108 struct x86_reg arg0 ) 109{ 110 /* Pull in low word, then swizzle in identity */ 111 sse_movss(&p->func, dest, arg0); 112 sse_shufps(&p->func, dest, get_identity(p), SHUF(X,Y,Z,W) ); 113} 114 115 116 117static void emit_load3f_3( struct x86_program *p, 118 struct x86_reg dest, 119 struct x86_reg arg0 ) 120{ 121 /* Over-reads by 1 dword - potential SEGV if input is a vertex 122 * array. 123 */ 124 if (p->inputs_safe) { 125 sse_movups(&p->func, dest, arg0); 126 } 127 else { 128 /* c 0 0 0 129 * c c c c 130 * a b c c 131 */ 132 sse_movss(&p->func, dest, x86_make_disp(arg0, 8)); 133 sse_shufps(&p->func, dest, dest, SHUF(X,X,X,X)); 134 sse_movlps(&p->func, dest, arg0); 135 } 136} 137 138static void emit_load3f_2( struct x86_program *p, 139 struct x86_reg dest, 140 struct x86_reg arg0 ) 141{ 142 emit_load4f_2(p, dest, arg0); 143} 144 145static void emit_load3f_1( struct x86_program *p, 146 struct x86_reg dest, 147 struct x86_reg arg0 ) 148{ 149 emit_load4f_1(p, dest, arg0); 150} 151 152static void emit_load2f_2( struct x86_program *p, 153 struct x86_reg dest, 154 struct x86_reg arg0 ) 155{ 156 sse_movlps(&p->func, dest, arg0); 157} 158 159static void emit_load2f_1( struct x86_program *p, 160 struct x86_reg dest, 161 struct x86_reg arg0 ) 162{ 163 emit_load4f_1(p, dest, arg0); 164} 165 166static void emit_load1f_1( struct x86_program *p, 167 struct x86_reg dest, 168 struct x86_reg arg0 ) 169{ 170 sse_movss(&p->func, dest, arg0); 171} 172 173static void (*load[4][4])( struct x86_program *p, 174 struct x86_reg dest, 175 struct x86_reg arg0 ) = { 176 { emit_load1f_1, 177 emit_load1f_1, 178 emit_load1f_1, 179 emit_load1f_1 }, 180 181 { emit_load2f_1, 182 emit_load2f_2, 183 emit_load2f_2, 184 emit_load2f_2 }, 185 186 { emit_load3f_1, 187 emit_load3f_2, 188 emit_load3f_3, 189 emit_load3f_3 }, 190 191 { emit_load4f_1, 192 emit_load4f_2, 193 emit_load4f_3, 194 emit_load4f_4 } 195}; 196 197static void emit_load( struct x86_program *p, 198 struct x86_reg dest, 199 GLuint sz, 200 struct x86_reg src, 201 GLuint src_sz) 202{ 203 load[sz-1][src_sz-1](p, dest, src); 204} 205 206static void emit_store4f( struct x86_program *p, 207 struct x86_reg dest, 208 struct x86_reg arg0 ) 209{ 210 sse_movups(&p->func, dest, arg0); 211} 212 213static void emit_store3f( struct x86_program *p, 214 struct x86_reg dest, 215 struct x86_reg arg0 ) 216{ 217 if (p->outputs_safe) { 218 /* Emit the extra dword anyway. This may hurt writecombining, 219 * may cause other problems. 220 */ 221 sse_movups(&p->func, dest, arg0); 222 } 223 else { 224 /* Alternate strategy - emit two, shuffle, emit one. 225 */ 226 sse_movlps(&p->func, dest, arg0); 227 sse_shufps(&p->func, arg0, arg0, SHUF(Z,Z,Z,Z) ); /* NOTE! destructive */ 228 sse_movss(&p->func, x86_make_disp(dest,8), arg0); 229 } 230} 231 232static void emit_store2f( struct x86_program *p, 233 struct x86_reg dest, 234 struct x86_reg arg0 ) 235{ 236 sse_movlps(&p->func, dest, arg0); 237} 238 239static void emit_store1f( struct x86_program *p, 240 struct x86_reg dest, 241 struct x86_reg arg0 ) 242{ 243 sse_movss(&p->func, dest, arg0); 244} 245 246 247static void (*store[4])( struct x86_program *p, 248 struct x86_reg dest, 249 struct x86_reg arg0 ) = 250{ 251 emit_store1f, 252 emit_store2f, 253 emit_store3f, 254 emit_store4f 255}; 256 257static void emit_store( struct x86_program *p, 258 struct x86_reg dest, 259 GLuint sz, 260 struct x86_reg temp ) 261 262{ 263 store[sz-1](p, dest, temp); 264} 265 266static void emit_pack_store_4ub( struct x86_program *p, 267 struct x86_reg dest, 268 struct x86_reg temp ) 269{ 270 /* Scale by 255.0 271 */ 272 sse_mulps(&p->func, temp, p->chan0); 273 274 if (p->have_sse2) { 275 sse2_cvtps2dq(&p->func, temp, temp); 276 sse2_packssdw(&p->func, temp, temp); 277 sse2_packuswb(&p->func, temp, temp); 278 sse_movss(&p->func, dest, temp); 279 } 280 else { 281 struct x86_reg mmx0 = x86_make_reg(file_MMX, 0); 282 struct x86_reg mmx1 = x86_make_reg(file_MMX, 1); 283 sse_cvtps2pi(&p->func, mmx0, temp); 284 sse_movhlps(&p->func, temp, temp); 285 sse_cvtps2pi(&p->func, mmx1, temp); 286 mmx_packssdw(&p->func, mmx0, mmx1); 287 mmx_packuswb(&p->func, mmx0, mmx0); 288 mmx_movd(&p->func, dest, mmx0); 289 } 290} 291 292static GLint get_offset( const void *a, const void *b ) 293{ 294 return (const char *)b - (const char *)a; 295} 296 297/* Not much happens here. Eventually use this function to try and 298 * avoid saving/reloading the source pointers each vertex (if some of 299 * them can fit in registers). 300 */ 301static void get_src_ptr( struct x86_program *p, 302 struct x86_reg srcREG, 303 struct x86_reg vtxREG, 304 struct tnl_clipspace_attr *a ) 305{ 306 struct tnl_clipspace *vtx = GET_VERTEX_STATE(p->ctx); 307 struct x86_reg ptr_to_src = x86_make_disp(vtxREG, get_offset(vtx, &a->inputptr)); 308 309 /* Load current a[j].inputptr 310 */ 311 x86_mov(&p->func, srcREG, ptr_to_src); 312} 313 314static void update_src_ptr( struct x86_program *p, 315 struct x86_reg srcREG, 316 struct x86_reg vtxREG, 317 struct tnl_clipspace_attr *a ) 318{ 319 if (a->inputstride) { 320 struct tnl_clipspace *vtx = GET_VERTEX_STATE(p->ctx); 321 struct x86_reg ptr_to_src = x86_make_disp(vtxREG, get_offset(vtx, &a->inputptr)); 322 323 /* add a[j].inputstride (hardcoded value - could just as easily 324 * pull the stride value from memory each time). 325 */ 326 x86_lea(&p->func, srcREG, x86_make_disp(srcREG, a->inputstride)); 327 328 /* save new value of a[j].inputptr 329 */ 330 x86_mov(&p->func, ptr_to_src, srcREG); 331 } 332} 333 334 335/* Lots of hardcoding 336 * 337 * EAX -- pointer to current output vertex 338 * ECX -- pointer to current attribute 339 * 340 */ 341static GLboolean build_vertex_emit( struct x86_program *p ) 342{ 343 GLcontext *ctx = p->ctx; 344 TNLcontext *tnl = TNL_CONTEXT(ctx); 345 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 346 GLuint j = 0; 347 348 struct x86_reg vertexEAX = x86_make_reg(file_REG32, reg_AX); 349 struct x86_reg srcECX = x86_make_reg(file_REG32, reg_CX); 350 struct x86_reg countEBP = x86_make_reg(file_REG32, reg_BP); 351 struct x86_reg vtxESI = x86_make_reg(file_REG32, reg_SI); 352 struct x86_reg temp = x86_make_reg(file_XMM, 0); 353 struct x86_reg vp0 = x86_make_reg(file_XMM, 1); 354 struct x86_reg vp1 = x86_make_reg(file_XMM, 2); 355 GLubyte *fixup, *label; 356 357 /* Push a few regs? 358 */ 359 x86_push(&p->func, countEBP); 360 x86_push(&p->func, vtxESI); 361 362 363 /* Get vertex count, compare to zero 364 */ 365 x86_xor(&p->func, srcECX, srcECX); 366 x86_mov(&p->func, countEBP, x86_fn_arg(&p->func, 2)); 367 x86_cmp(&p->func, countEBP, srcECX); 368 fixup = x86_jcc_forward(&p->func, cc_E); 369 370 /* Initialize destination register. 371 */ 372 x86_mov(&p->func, vertexEAX, x86_fn_arg(&p->func, 3)); 373 374 /* Dereference ctx to get tnl, then vtx: 375 */ 376 x86_mov(&p->func, vtxESI, x86_fn_arg(&p->func, 1)); 377 x86_mov(&p->func, vtxESI, x86_make_disp(vtxESI, get_offset(ctx, &ctx->swtnl_context))); 378 vtxESI = x86_make_disp(vtxESI, get_offset(tnl, &tnl->clipspace)); 379 380 381 /* Possibly load vp0, vp1 for viewport calcs: 382 */ 383 if (vtx->need_viewport) { 384 sse_movups(&p->func, vp0, x86_make_disp(vtxESI, get_offset(vtx, &vtx->vp_scale[0]))); 385 sse_movups(&p->func, vp1, x86_make_disp(vtxESI, get_offset(vtx, &vtx->vp_xlate[0]))); 386 } 387 388 /* always load, needed or not: 389 */ 390 sse_movups(&p->func, p->chan0, x86_make_disp(vtxESI, get_offset(vtx, &vtx->chan_scale[0]))); 391 sse_movups(&p->func, p->identity, x86_make_disp(vtxESI, get_offset(vtx, &vtx->identity[0]))); 392 393 /* Note address for loop jump */ 394 label = x86_get_label(&p->func); 395 396 /* Emit code for each of the attributes. Currently routes 397 * everything through SSE registers, even when it might be more 398 * efficient to stick with regular old x86. No optimization or 399 * other tricks - enough new ground to cover here just getting 400 * things working. 401 */ 402 while (j < vtx->attr_count) { 403 struct tnl_clipspace_attr *a = &vtx->attr[j]; 404 struct x86_reg dest = x86_make_disp(vertexEAX, a->vertoffset); 405 406 /* Now, load an XMM reg from src, perhaps transform, then save. 407 * Could be shortcircuited in specific cases: 408 */ 409 switch (a->format) { 410 case EMIT_1F: 411 get_src_ptr(p, srcECX, vtxESI, a); 412 emit_load(p, temp, 1, x86_deref(srcECX), a->inputsize); 413 emit_store(p, dest, 1, temp); 414 update_src_ptr(p, srcECX, vtxESI, a); 415 break; 416 case EMIT_2F: 417 get_src_ptr(p, srcECX, vtxESI, a); 418 emit_load(p, temp, 2, x86_deref(srcECX), a->inputsize); 419 emit_store(p, dest, 2, temp); 420 update_src_ptr(p, srcECX, vtxESI, a); 421 break; 422 case EMIT_3F: 423 /* Potentially the worst case - hardcode 2+1 copying: 424 */ 425 if (0) { 426 get_src_ptr(p, srcECX, vtxESI, a); 427 emit_load(p, temp, 3, x86_deref(srcECX), a->inputsize); 428 emit_store(p, dest, 3, temp); 429 update_src_ptr(p, srcECX, vtxESI, a); 430 } 431 else { 432 get_src_ptr(p, srcECX, vtxESI, a); 433 emit_load(p, temp, 2, x86_deref(srcECX), a->inputsize); 434 emit_store(p, dest, 2, temp); 435 if (a->inputsize > 2) { 436 emit_load(p, temp, 1, x86_make_disp(srcECX, 8), 1); 437 emit_store(p, x86_make_disp(dest,8), 1, temp); 438 } 439 else { 440 sse_movss(&p->func, x86_make_disp(dest,8), get_identity(p)); 441 } 442 update_src_ptr(p, srcECX, vtxESI, a); 443 } 444 break; 445 case EMIT_4F: 446 get_src_ptr(p, srcECX, vtxESI, a); 447 emit_load(p, temp, 4, x86_deref(srcECX), a->inputsize); 448 emit_store(p, dest, 4, temp); 449 update_src_ptr(p, srcECX, vtxESI, a); 450 break; 451 case EMIT_2F_VIEWPORT: 452 get_src_ptr(p, srcECX, vtxESI, a); 453 emit_load(p, temp, 2, x86_deref(srcECX), a->inputsize); 454 sse_mulps(&p->func, temp, vp0); 455 sse_addps(&p->func, temp, vp1); 456 emit_store(p, dest, 2, temp); 457 update_src_ptr(p, srcECX, vtxESI, a); 458 break; 459 case EMIT_3F_VIEWPORT: 460 get_src_ptr(p, srcECX, vtxESI, a); 461 emit_load(p, temp, 3, x86_deref(srcECX), a->inputsize); 462 sse_mulps(&p->func, temp, vp0); 463 sse_addps(&p->func, temp, vp1); 464 emit_store(p, dest, 3, temp); 465 update_src_ptr(p, srcECX, vtxESI, a); 466 break; 467 case EMIT_4F_VIEWPORT: 468 get_src_ptr(p, srcECX, vtxESI, a); 469 emit_load(p, temp, 4, x86_deref(srcECX), a->inputsize); 470 sse_mulps(&p->func, temp, vp0); 471 sse_addps(&p->func, temp, vp1); 472 emit_store(p, dest, 4, temp); 473 update_src_ptr(p, srcECX, vtxESI, a); 474 break; 475 case EMIT_3F_XYW: 476 get_src_ptr(p, srcECX, vtxESI, a); 477 emit_load(p, temp, 4, x86_deref(srcECX), a->inputsize); 478 sse_shufps(&p->func, temp, temp, SHUF(X,Y,W,Z)); 479 emit_store(p, dest, 3, temp); 480 update_src_ptr(p, srcECX, vtxESI, a); 481 break; 482 483 case EMIT_1UB_1F: 484 /* Test for PAD3 + 1UB: 485 */ 486 if (j > 0 && 487 a[-1].vertoffset + a[-1].vertattrsize <= a->vertoffset - 3) 488 { 489 get_src_ptr(p, srcECX, vtxESI, a); 490 emit_load(p, temp, 1, x86_deref(srcECX), a->inputsize); 491 sse_shufps(&p->func, temp, temp, SHUF(X,X,X,X)); 492 emit_pack_store_4ub(p, x86_make_disp(dest, -3), temp); /* overkill! */ 493 update_src_ptr(p, srcECX, vtxESI, a); 494 } 495 else { 496 _mesa_printf("Can't emit 1ub %x %x %d\n", a->vertoffset, a[-1].vertoffset, a[-1].vertattrsize ); 497 return GL_FALSE; 498 } 499 break; 500 case EMIT_3UB_3F_RGB: 501 case EMIT_3UB_3F_BGR: 502 /* Test for 3UB + PAD1: 503 */ 504 if (j == vtx->attr_count - 1 || 505 a[1].vertoffset >= a->vertoffset + 4) { 506 get_src_ptr(p, srcECX, vtxESI, a); 507 emit_load(p, temp, 3, x86_deref(srcECX), a->inputsize); 508 if (a->format == EMIT_3UB_3F_BGR) 509 sse_shufps(&p->func, temp, temp, SHUF(Z,Y,X,W)); 510 emit_pack_store_4ub(p, dest, temp); 511 update_src_ptr(p, srcECX, vtxESI, a); 512 } 513 /* Test for 3UB + 1UB: 514 */ 515 else if (j < vtx->attr_count - 1 && 516 a[1].format == EMIT_1UB_1F && 517 a[1].vertoffset == a->vertoffset + 3) { 518 get_src_ptr(p, srcECX, vtxESI, a); 519 emit_load(p, temp, 3, x86_deref(srcECX), a->inputsize); 520 update_src_ptr(p, srcECX, vtxESI, a); 521 522 /* Make room for incoming value: 523 */ 524 sse_shufps(&p->func, temp, temp, SHUF(W,X,Y,Z)); 525 526 get_src_ptr(p, srcECX, vtxESI, &a[1]); 527 emit_load(p, temp, 1, x86_deref(srcECX), a[1].inputsize); 528 update_src_ptr(p, srcECX, vtxESI, &a[1]); 529 530 /* Rearrange and possibly do BGR conversion: 531 */ 532 if (a->format == EMIT_3UB_3F_BGR) 533 sse_shufps(&p->func, temp, temp, SHUF(W,Z,Y,X)); 534 else 535 sse_shufps(&p->func, temp, temp, SHUF(Y,Z,W,X)); 536 537 emit_pack_store_4ub(p, dest, temp); 538 j++; /* NOTE: two attrs consumed */ 539 } 540 else { 541 _mesa_printf("Can't emit 3ub\n"); 542 return GL_FALSE; /* add this later */ 543 } 544 break; 545 546 case EMIT_4UB_4F_RGBA: 547 get_src_ptr(p, srcECX, vtxESI, a); 548 emit_load(p, temp, 4, x86_deref(srcECX), a->inputsize); 549 emit_pack_store_4ub(p, dest, temp); 550 update_src_ptr(p, srcECX, vtxESI, a); 551 break; 552 case EMIT_4UB_4F_BGRA: 553 get_src_ptr(p, srcECX, vtxESI, a); 554 emit_load(p, temp, 4, x86_deref(srcECX), a->inputsize); 555 sse_shufps(&p->func, temp, temp, SHUF(Z,Y,X,W)); 556 emit_pack_store_4ub(p, dest, temp); 557 update_src_ptr(p, srcECX, vtxESI, a); 558 break; 559 case EMIT_4UB_4F_ARGB: 560 get_src_ptr(p, srcECX, vtxESI, a); 561 emit_load(p, temp, 4, x86_deref(srcECX), a->inputsize); 562 sse_shufps(&p->func, temp, temp, SHUF(W,X,Y,Z)); 563 emit_pack_store_4ub(p, dest, temp); 564 update_src_ptr(p, srcECX, vtxESI, a); 565 break; 566 case EMIT_4UB_4F_ABGR: 567 get_src_ptr(p, srcECX, vtxESI, a); 568 emit_load(p, temp, 4, x86_deref(srcECX), a->inputsize); 569 sse_shufps(&p->func, temp, temp, SHUF(W,Z,Y,X)); 570 emit_pack_store_4ub(p, dest, temp); 571 update_src_ptr(p, srcECX, vtxESI, a); 572 break; 573 case EMIT_4CHAN_4F_RGBA: 574 switch (CHAN_TYPE) { 575 case GL_UNSIGNED_BYTE: 576 get_src_ptr(p, srcECX, vtxESI, a); 577 emit_load(p, temp, 4, x86_deref(srcECX), a->inputsize); 578 emit_pack_store_4ub(p, dest, temp); 579 update_src_ptr(p, srcECX, vtxESI, a); 580 break; 581 case GL_FLOAT: 582 get_src_ptr(p, srcECX, vtxESI, a); 583 emit_load(p, temp, 4, x86_deref(srcECX), a->inputsize); 584 emit_store(p, dest, 4, temp); 585 update_src_ptr(p, srcECX, vtxESI, a); 586 break; 587 case GL_UNSIGNED_SHORT: 588 default: 589 _mesa_printf("unknown CHAN_TYPE %s\n", _mesa_lookup_enum_by_nr(CHAN_TYPE)); 590 return GL_FALSE; 591 } 592 break; 593 default: 594 _mesa_printf("unknown a[%d].format %d\n", j, a->format); 595 return GL_FALSE; /* catch any new opcodes */ 596 } 597 598 /* Increment j by at least 1 - may have been incremented above also: 599 */ 600 j++; 601 } 602 603 /* Next vertex: 604 */ 605 x86_lea(&p->func, vertexEAX, x86_make_disp(vertexEAX, vtx->vertex_size)); 606 607 /* decr count, loop if not zero 608 */ 609 x86_dec(&p->func, countEBP); 610 x86_test(&p->func, countEBP, countEBP); 611 x86_jcc(&p->func, cc_NZ, label); 612 613 /* Exit mmx state? 614 */ 615 if (p->func.need_emms) 616 mmx_emms(&p->func); 617 618 /* Land forward jump here: 619 */ 620 x86_fixup_fwd_jump(&p->func, fixup); 621 622 /* Pop regs and return 623 */ 624 x86_pop(&p->func, x86_get_base_reg(vtxESI)); 625 x86_pop(&p->func, countEBP); 626 x86_ret(&p->func); 627 628 assert(!vtx->emit); 629 vtx->emit = (tnl_emit_func)x86_get_func(&p->func); 630 631 assert( (char *) p->func.csr - (char *) p->func.store <= MAX_SSE_CODE_SIZE ); 632 return GL_TRUE; 633} 634 635 636 637void _tnl_generate_sse_emit( GLcontext *ctx ) 638{ 639 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 640 struct x86_program p; 641 642 if (!cpu_has_xmm) { 643 vtx->codegen_emit = NULL; 644 return; 645 } 646 647 _mesa_memset(&p, 0, sizeof(p)); 648 649 p.ctx = ctx; 650 p.inputs_safe = 0; /* for now */ 651 p.outputs_safe = 0; /* for now */ 652 p.have_sse2 = cpu_has_xmm2; 653 p.identity = x86_make_reg(file_XMM, 6); 654 p.chan0 = x86_make_reg(file_XMM, 7); 655 656 if (!x86_init_func_size(&p.func, MAX_SSE_CODE_SIZE)) { 657 vtx->emit = NULL; 658 return; 659 } 660 661 if (build_vertex_emit(&p)) { 662 _tnl_register_fastpath( vtx, GL_TRUE ); 663 } 664 else { 665 /* Note the failure so that we don't keep trying to codegen an 666 * impossible state: 667 */ 668 _tnl_register_fastpath( vtx, GL_FALSE ); 669 x86_release_func(&p.func); 670 } 671} 672 673#else 674 675void _tnl_generate_sse_emit( GLcontext *ctx ) 676{ 677 /* Dummy version for when USE_SSE_ASM not defined */ 678} 679 680#endif 681