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 (at) tungstengraphics.com> 26 */ 27 28 #include "main/glheader.h" 29 #include "main/context.h" 30 #include "main/colormac.h" 31 #include "swrast/s_chan.h" 32 #include "t_context.h" 33 #include "t_vertex.h" 34 35 #define DBG 0 36 37 /* Build and manage clipspace/ndc/window vertices. 38 */ 39 40 static GLboolean match_fastpath( struct tnl_clipspace *vtx, 41 const struct tnl_clipspace_fastpath *fp) 42 { 43 GLuint j; 44 45 if (vtx->attr_count != fp->attr_count) 46 return GL_FALSE; 47 48 for (j = 0; j < vtx->attr_count; j++) 49 if (vtx->attr[j].format != fp->attr[j].format || 50 vtx->attr[j].inputsize != fp->attr[j].size || 51 vtx->attr[j].vertoffset != fp->attr[j].offset) 52 return GL_FALSE; 53 54 if (fp->match_strides) { 55 if (vtx->vertex_size != fp->vertex_size) 56 return GL_FALSE; 57 58 for (j = 0; j < vtx->attr_count; j++) 59 if (vtx->attr[j].inputstride != fp->attr[j].stride) 60 return GL_FALSE; 61 } 62 63 return GL_TRUE; 64 } 65 66 static GLboolean search_fastpath_emit( struct tnl_clipspace *vtx ) 67 { 68 struct tnl_clipspace_fastpath *fp = vtx->fastpath; 69 70 for ( ; fp ; fp = fp->next) { 71 if (match_fastpath(vtx, fp)) { 72 vtx->emit = fp->func; 73 return GL_TRUE; 74 } 75 } 76 77 return GL_FALSE; 78 } 79 80 void _tnl_register_fastpath( struct tnl_clipspace *vtx, 81 GLboolean match_strides ) 82 { 83 struct tnl_clipspace_fastpath *fastpath = CALLOC_STRUCT(tnl_clipspace_fastpath); 84 GLuint i; 85 86 fastpath->vertex_size = vtx->vertex_size; 87 fastpath->attr_count = vtx->attr_count; 88 fastpath->match_strides = match_strides; 89 fastpath->func = vtx->emit; 90 fastpath->attr = (struct tnl_attr_type *) 91 malloc(vtx->attr_count * sizeof(fastpath->attr[0])); 92 93 for (i = 0; i < vtx->attr_count; i++) { 94 fastpath->attr[i].format = vtx->attr[i].format; 95 fastpath->attr[i].stride = vtx->attr[i].inputstride; 96 fastpath->attr[i].size = vtx->attr[i].inputsize; 97 fastpath->attr[i].offset = vtx->attr[i].vertoffset; 98 } 99 100 fastpath->next = vtx->fastpath; 101 vtx->fastpath = fastpath; 102 } 103 104 105 106 /*********************************************************************** 107 * Build codegen functions or return generic ones: 108 */ 109 static void choose_emit_func( struct gl_context *ctx, GLuint count, GLubyte *dest) 110 { 111 struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; 112 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 113 struct tnl_clipspace_attr *a = vtx->attr; 114 const GLuint attr_count = vtx->attr_count; 115 GLuint j; 116 117 for (j = 0; j < attr_count; j++) { 118 GLvector4f *vptr = VB->AttribPtr[a[j].attrib]; 119 a[j].inputstride = vptr->stride; 120 a[j].inputsize = vptr->size; 121 a[j].emit = a[j].insert[vptr->size - 1]; /* not always used */ 122 } 123 124 vtx->emit = NULL; 125 126 /* Does this match an existing (hardwired, codegen or known-bad) 127 * fastpath? 128 */ 129 if (search_fastpath_emit(vtx)) { 130 /* Use this result. If it is null, then it is already known 131 * that the current state will fail for codegen and there is no 132 * point trying again. 133 */ 134 } 135 else if (vtx->codegen_emit) { 136 vtx->codegen_emit(ctx); 137 } 138 139 if (!vtx->emit) { 140 _tnl_generate_hardwired_emit(ctx); 141 } 142 143 /* Otherwise use the generic version: 144 */ 145 if (!vtx->emit) 146 vtx->emit = _tnl_generic_emit; 147 148 vtx->emit( ctx, count, dest ); 149 } 150 151 152 153 static void choose_interp_func( struct gl_context *ctx, 154 GLfloat t, 155 GLuint edst, GLuint eout, GLuint ein, 156 GLboolean force_boundary ) 157 { 158 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 159 160 if (vtx->need_extras && 161 (ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED))) { 162 vtx->interp = _tnl_generic_interp_extras; 163 } else { 164 vtx->interp = _tnl_generic_interp; 165 } 166 167 vtx->interp( ctx, t, edst, eout, ein, force_boundary ); 168 } 169 170 171 static void choose_copy_pv_func( struct gl_context *ctx, GLuint edst, GLuint esrc ) 172 { 173 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 174 175 if (vtx->need_extras && 176 (ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED))) { 177 vtx->copy_pv = _tnl_generic_copy_pv_extras; 178 } else { 179 vtx->copy_pv = _tnl_generic_copy_pv; 180 } 181 182 vtx->copy_pv( ctx, edst, esrc ); 183 } 184 185 186 /*********************************************************************** 187 * Public entrypoints, mostly dispatch to the above: 188 */ 189 190 191 /* Interpolate between two vertices to produce a third: 192 */ 193 void _tnl_interp( struct gl_context *ctx, 194 GLfloat t, 195 GLuint edst, GLuint eout, GLuint ein, 196 GLboolean force_boundary ) 197 { 198 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 199 vtx->interp( ctx, t, edst, eout, ein, force_boundary ); 200 } 201 202 /* Copy colors from one vertex to another: 203 */ 204 void _tnl_copy_pv( struct gl_context *ctx, GLuint edst, GLuint esrc ) 205 { 206 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 207 vtx->copy_pv( ctx, edst, esrc ); 208 } 209 210 211 /* Extract a named attribute from a hardware vertex. Will have to 212 * reverse any viewport transformation, swizzling or other conversions 213 * which may have been applied: 214 */ 215 void _tnl_get_attr( struct gl_context *ctx, const void *vin, 216 GLenum attr, GLfloat *dest ) 217 { 218 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 219 const struct tnl_clipspace_attr *a = vtx->attr; 220 const GLuint attr_count = vtx->attr_count; 221 GLuint j; 222 223 for (j = 0; j < attr_count; j++) { 224 if (a[j].attrib == attr) { 225 a[j].extract( &a[j], dest, (GLubyte *)vin + a[j].vertoffset ); 226 return; 227 } 228 } 229 230 /* Else return the value from ctx->Current. 231 */ 232 if (attr == _TNL_ATTRIB_POINTSIZE) { 233 /* If the hardware vertex doesn't have point size then use size from 234 * struct gl_context. XXX this will be wrong if drawing attenuated points! 235 */ 236 dest[0] = ctx->Point.Size; 237 } 238 else { 239 memcpy( dest, ctx->Current.Attrib[attr], 4*sizeof(GLfloat)); 240 } 241 } 242 243 244 /* Complementary operation to the above. 245 */ 246 void _tnl_set_attr( struct gl_context *ctx, void *vout, 247 GLenum attr, const GLfloat *src ) 248 { 249 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 250 const struct tnl_clipspace_attr *a = vtx->attr; 251 const GLuint attr_count = vtx->attr_count; 252 GLuint j; 253 254 for (j = 0; j < attr_count; j++) { 255 if (a[j].attrib == attr) { 256 a[j].insert[4-1]( &a[j], (GLubyte *)vout + a[j].vertoffset, src ); 257 return; 258 } 259 } 260 } 261 262 263 void *_tnl_get_vertex( struct gl_context *ctx, GLuint nr ) 264 { 265 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 266 267 return vtx->vertex_buf + nr * vtx->vertex_size; 268 } 269 270 void _tnl_invalidate_vertex_state( struct gl_context *ctx, GLuint new_state ) 271 { 272 /* if two-sided lighting changes or filled/unfilled polygon state changes */ 273 if (new_state & (_NEW_LIGHT | _NEW_POLYGON) ) { 274 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 275 vtx->new_inputs = ~0; 276 vtx->interp = choose_interp_func; 277 vtx->copy_pv = choose_copy_pv_func; 278 } 279 } 280 281 static void invalidate_funcs( struct tnl_clipspace *vtx ) 282 { 283 vtx->emit = choose_emit_func; 284 vtx->interp = choose_interp_func; 285 vtx->copy_pv = choose_copy_pv_func; 286 vtx->new_inputs = ~0; 287 } 288 289 GLuint _tnl_install_attrs( struct gl_context *ctx, const struct tnl_attr_map *map, 290 GLuint nr, const GLfloat *vp, 291 GLuint unpacked_size ) 292 { 293 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 294 GLuint offset = 0; 295 GLuint i, j; 296 297 assert(nr < _TNL_ATTRIB_MAX); 298 assert(nr == 0 || map[0].attrib == VERT_ATTRIB_POS); 299 300 vtx->new_inputs = ~0; 301 vtx->need_viewport = GL_FALSE; 302 303 if (vp) { 304 vtx->need_viewport = GL_TRUE; 305 } 306 307 for (j = 0, i = 0; i < nr; i++) { 308 const GLuint format = map[i].format; 309 if (format == EMIT_PAD) { 310 if (DBG) 311 printf("%d: pad %d, offset %d\n", i, 312 map[i].offset, offset); 313 314 offset += map[i].offset; 315 316 } 317 else { 318 GLuint tmpoffset; 319 320 if (unpacked_size) 321 tmpoffset = map[i].offset; 322 else 323 tmpoffset = offset; 324 325 if (vtx->attr_count != j || 326 vtx->attr[j].attrib != map[i].attrib || 327 vtx->attr[j].format != format || 328 vtx->attr[j].vertoffset != tmpoffset) { 329 invalidate_funcs(vtx); 330 331 vtx->attr[j].attrib = map[i].attrib; 332 vtx->attr[j].format = format; 333 vtx->attr[j].vp = vp; 334 vtx->attr[j].insert = _tnl_format_info[format].insert; 335 vtx->attr[j].extract = _tnl_format_info[format].extract; 336 vtx->attr[j].vertattrsize = _tnl_format_info[format].attrsize; 337 vtx->attr[j].vertoffset = tmpoffset; 338 } 339 340 341 if (DBG) 342 printf("%d: %s, vp %p, offset %d\n", i, 343 _tnl_format_info[format].name, (void *)vp, 344 vtx->attr[j].vertoffset); 345 346 offset += _tnl_format_info[format].attrsize; 347 j++; 348 } 349 } 350 351 vtx->attr_count = j; 352 353 if (unpacked_size) 354 vtx->vertex_size = unpacked_size; 355 else 356 vtx->vertex_size = offset; 357 358 assert(vtx->vertex_size <= vtx->max_vertex_size); 359 return vtx->vertex_size; 360 } 361 362 363 364 void _tnl_invalidate_vertices( struct gl_context *ctx, GLuint newinputs ) 365 { 366 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 367 vtx->new_inputs |= newinputs; 368 } 369 370 371 /* This event has broader use beyond this file - will move elsewhere 372 * and probably invoke a driver callback. 373 */ 374 void _tnl_notify_pipeline_output_change( struct gl_context *ctx ) 375 { 376 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 377 invalidate_funcs(vtx); 378 } 379 380 381 static void adjust_input_ptrs( struct gl_context *ctx, GLint diff) 382 { 383 struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; 384 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 385 struct tnl_clipspace_attr *a = vtx->attr; 386 const GLuint count = vtx->attr_count; 387 GLuint j; 388 389 diff -= 1; 390 for (j=0; j<count; ++j) { 391 register GLvector4f *vptr = VB->AttribPtr[a->attrib]; 392 (a++)->inputptr += diff*vptr->stride; 393 } 394 } 395 396 static void update_input_ptrs( struct gl_context *ctx, GLuint start ) 397 { 398 struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; 399 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 400 struct tnl_clipspace_attr *a = vtx->attr; 401 const GLuint count = vtx->attr_count; 402 GLuint j; 403 404 for (j = 0; j < count; j++) { 405 GLvector4f *vptr = VB->AttribPtr[a[j].attrib]; 406 407 if (vtx->emit != choose_emit_func) { 408 assert(a[j].inputstride == vptr->stride); 409 assert(a[j].inputsize == vptr->size); 410 } 411 412 a[j].inputptr = ((GLubyte *)vptr->data) + start * vptr->stride; 413 } 414 415 if (a->vp) { 416 vtx->vp_scale[0] = a->vp[MAT_SX]; 417 vtx->vp_scale[1] = a->vp[MAT_SY]; 418 vtx->vp_scale[2] = a->vp[MAT_SZ]; 419 vtx->vp_scale[3] = 1.0; 420 vtx->vp_xlate[0] = a->vp[MAT_TX]; 421 vtx->vp_xlate[1] = a->vp[MAT_TY]; 422 vtx->vp_xlate[2] = a->vp[MAT_TZ]; 423 vtx->vp_xlate[3] = 0.0; 424 } 425 } 426 427 428 void _tnl_build_vertices( struct gl_context *ctx, 429 GLuint start, 430 GLuint end, 431 GLuint newinputs ) 432 { 433 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 434 update_input_ptrs( ctx, start ); 435 vtx->emit( ctx, end - start, 436 (GLubyte *)(vtx->vertex_buf + 437 start * vtx->vertex_size)); 438 } 439 440 /* Emit VB vertices start..end to dest. Note that VB vertex at 441 * postion start will be emitted to dest at position zero. 442 */ 443 void *_tnl_emit_vertices_to_buffer( struct gl_context *ctx, 444 GLuint start, 445 GLuint end, 446 void *dest ) 447 { 448 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 449 450 update_input_ptrs(ctx, start); 451 /* Note: dest should not be adjusted for non-zero 'start' values: 452 */ 453 vtx->emit( ctx, end - start, (GLubyte*) dest ); 454 return (void *)((GLubyte *)dest + vtx->vertex_size * (end - start)); 455 } 456 457 /* Emit indexed VB vertices start..end to dest. Note that VB vertex at 458 * postion start will be emitted to dest at position zero. 459 */ 460 461 void *_tnl_emit_indexed_vertices_to_buffer( struct gl_context *ctx, 462 const GLuint *elts, 463 GLuint start, 464 GLuint end, 465 void *dest ) 466 { 467 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 468 GLuint oldIndex; 469 GLubyte *cdest = dest; 470 471 update_input_ptrs(ctx, oldIndex = elts[start++]); 472 vtx->emit( ctx, 1, cdest ); 473 cdest += vtx->vertex_size; 474 475 for (; start < end; ++start) { 476 adjust_input_ptrs(ctx, elts[start] - oldIndex); 477 oldIndex = elts[start]; 478 vtx->emit( ctx, 1, cdest); 479 cdest += vtx->vertex_size; 480 } 481 482 return (void *) cdest; 483 } 484 485 486 void _tnl_init_vertices( struct gl_context *ctx, 487 GLuint vb_size, 488 GLuint max_vertex_size ) 489 { 490 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 491 492 _tnl_install_attrs( ctx, NULL, 0, NULL, 0 ); 493 494 vtx->need_extras = GL_TRUE; 495 if (max_vertex_size > vtx->max_vertex_size) { 496 _tnl_free_vertices( ctx ); 497 vtx->max_vertex_size = max_vertex_size; 498 vtx->vertex_buf = (GLubyte *)_mesa_align_calloc(vb_size * max_vertex_size, 32 ); 499 invalidate_funcs(vtx); 500 } 501 502 switch(CHAN_TYPE) { 503 case GL_UNSIGNED_BYTE: 504 vtx->chan_scale[0] = 255.0; 505 vtx->chan_scale[1] = 255.0; 506 vtx->chan_scale[2] = 255.0; 507 vtx->chan_scale[3] = 255.0; 508 break; 509 case GL_UNSIGNED_SHORT: 510 vtx->chan_scale[0] = 65535.0; 511 vtx->chan_scale[1] = 65535.0; 512 vtx->chan_scale[2] = 65535.0; 513 vtx->chan_scale[3] = 65535.0; 514 break; 515 default: 516 vtx->chan_scale[0] = 1.0; 517 vtx->chan_scale[1] = 1.0; 518 vtx->chan_scale[2] = 1.0; 519 vtx->chan_scale[3] = 1.0; 520 break; 521 } 522 523 vtx->identity[0] = 0.0; 524 vtx->identity[1] = 0.0; 525 vtx->identity[2] = 0.0; 526 vtx->identity[3] = 1.0; 527 528 vtx->codegen_emit = NULL; 529 530 #ifdef USE_SSE_ASM 531 if (!_mesa_getenv("MESA_NO_CODEGEN")) 532 vtx->codegen_emit = _tnl_generate_sse_emit; 533 #endif 534 } 535 536 537 void _tnl_free_vertices( struct gl_context *ctx ) 538 { 539 TNLcontext *tnl = TNL_CONTEXT(ctx); 540 if (tnl) { 541 struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx); 542 struct tnl_clipspace_fastpath *fp, *tmp; 543 544 if (vtx->vertex_buf) { 545 _mesa_align_free(vtx->vertex_buf); 546 vtx->vertex_buf = NULL; 547 } 548 549 for (fp = vtx->fastpath ; fp ; fp = tmp) { 550 tmp = fp->next; 551 FREE(fp->attr); 552 553 /* KW: At the moment, fp->func is constrained to be allocated by 554 * _mesa_exec_alloc(), as the hardwired fastpaths in 555 * t_vertex_generic.c are handled specially. It would be nice 556 * to unify them, but this probably won't change until this 557 * module gets another overhaul. 558 */ 559 _mesa_exec_free((void *) fp->func); 560 FREE(fp); 561 } 562 563 vtx->fastpath = NULL; 564 } 565 } 566
