1 /* 2 * Copyright (C) 2009-2010 Francisco Jerez. 3 * All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sublicense, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 * 25 */ 26 27 #include "nouveau_driver.h" 28 #include "nouveau_bufferobj.h" 29 #include "nouveau_util.h" 30 31 #include "main/bufferobj.h" 32 #include "main/glformats.h" 33 #include "main/image.h" 34 35 /* Arbitrary pushbuf length we can assume we can get with a single 36 * call to WAIT_RING. */ 37 #define PUSHBUF_DWORDS 65536 38 39 /* Functions to turn GL arrays or index buffers into nouveau_array 40 * structures. */ 41 42 static int 43 get_array_stride(struct gl_context *ctx, const struct gl_vertex_array *a) 44 { 45 struct nouveau_render_state *render = to_render_state(ctx); 46 47 if (render->mode == VBO && !_mesa_is_bufferobj(a->BufferObj)) 48 /* Pack client buffers. */ 49 return align(_mesa_sizeof_type(a->Type) * a->Size, 4); 50 else 51 return a->StrideB; 52 } 53 54 static void 55 vbo_init_arrays(struct gl_context *ctx, const struct _mesa_index_buffer *ib, 56 const struct gl_vertex_array **arrays) 57 { 58 struct nouveau_render_state *render = to_render_state(ctx); 59 GLboolean imm = (render->mode == IMM); 60 int i, attr; 61 62 if (ib) 63 nouveau_init_array(&render->ib, 0, 0, ib->count, ib->type, 64 ib->obj, ib->ptr, GL_TRUE, ctx); 65 66 FOR_EACH_BOUND_ATTR(render, i, attr) { 67 const struct gl_vertex_array *array = arrays[attr]; 68 69 nouveau_init_array(&render->attrs[attr], attr, 70 get_array_stride(ctx, array), 71 array->Size, array->Type, 72 imm ? array->BufferObj : NULL, 73 array->Ptr, imm, ctx); 74 } 75 } 76 77 static void 78 vbo_deinit_arrays(struct gl_context *ctx, const struct _mesa_index_buffer *ib, 79 const struct gl_vertex_array **arrays) 80 { 81 struct nouveau_render_state *render = to_render_state(ctx); 82 int i, attr; 83 84 if (ib) 85 nouveau_cleanup_array(&render->ib); 86 87 FOR_EACH_BOUND_ATTR(render, i, attr) { 88 struct nouveau_array *a = &render->attrs[attr]; 89 90 if (render->mode == IMM) 91 nouveau_bo_ref(NULL, &a->bo); 92 93 nouveau_deinit_array(a); 94 render->map[i] = -1; 95 } 96 97 render->attr_count = 0; 98 } 99 100 /* Make some rendering decisions from the GL context. */ 101 102 static void 103 vbo_choose_render_mode(struct gl_context *ctx, const struct gl_vertex_array **arrays) 104 { 105 struct nouveau_render_state *render = to_render_state(ctx); 106 int i; 107 108 render->mode = VBO; 109 110 if (ctx->Light.Enabled) { 111 for (i = 0; i < MAT_ATTRIB_MAX; i++) { 112 if (arrays[VERT_ATTRIB_GENERIC0 + i]->StrideB) { 113 render->mode = IMM; 114 break; 115 } 116 } 117 } 118 } 119 120 static void 121 vbo_emit_attr(struct gl_context *ctx, const struct gl_vertex_array **arrays, 122 int attr) 123 { 124 struct nouveau_pushbuf *push = context_push(ctx); 125 struct nouveau_render_state *render = to_render_state(ctx); 126 const struct gl_vertex_array *array = arrays[attr]; 127 struct nouveau_array *a = &render->attrs[attr]; 128 RENDER_LOCALS(ctx); 129 130 if (!array->StrideB) { 131 if (attr >= VERT_ATTRIB_GENERIC0) 132 /* nouveau_update_state takes care of materials. */ 133 return; 134 135 /* Constant attribute. */ 136 nouveau_init_array(a, attr, array->StrideB, array->Size, 137 array->Type, array->BufferObj, array->Ptr, 138 GL_TRUE, ctx); 139 EMIT_IMM(ctx, a, 0); 140 nouveau_deinit_array(a); 141 142 } else { 143 /* Varying attribute. */ 144 struct nouveau_attr_info *info = &TAG(vertex_attrs)[attr]; 145 146 if (render->mode == VBO) { 147 render->map[info->vbo_index] = attr; 148 render->vertex_size += array->_ElementSize; 149 render->attr_count = MAX2(render->attr_count, 150 info->vbo_index + 1); 151 } else { 152 render->map[render->attr_count++] = attr; 153 render->vertex_size += 4 * info->imm_fields; 154 } 155 } 156 } 157 158 #define MAT(a) (VERT_ATTRIB_GENERIC0 + MAT_ATTRIB_##a) 159 160 static void 161 vbo_choose_attrs(struct gl_context *ctx, const struct gl_vertex_array **arrays) 162 { 163 struct nouveau_render_state *render = to_render_state(ctx); 164 int i; 165 166 /* Reset the vertex size. */ 167 render->vertex_size = 0; 168 render->attr_count = 0; 169 170 vbo_emit_attr(ctx, arrays, VERT_ATTRIB_COLOR0); 171 if (ctx->Fog.ColorSumEnabled && !ctx->Light.Enabled) 172 vbo_emit_attr(ctx, arrays, VERT_ATTRIB_COLOR1); 173 174 for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++) { 175 if (ctx->Texture._EnabledCoordUnits & (1 << i)) 176 vbo_emit_attr(ctx, arrays, VERT_ATTRIB_TEX0 + i); 177 } 178 179 if (ctx->Fog.Enabled && ctx->Fog.FogCoordinateSource == GL_FOG_COORD) 180 vbo_emit_attr(ctx, arrays, VERT_ATTRIB_FOG); 181 182 if (ctx->Light.Enabled || 183 (ctx->Texture._GenFlags & TEXGEN_NEED_NORMALS)) 184 vbo_emit_attr(ctx, arrays, VERT_ATTRIB_NORMAL); 185 186 if (ctx->Light.Enabled && render->mode == IMM) { 187 vbo_emit_attr(ctx, arrays, MAT(FRONT_AMBIENT)); 188 vbo_emit_attr(ctx, arrays, MAT(FRONT_DIFFUSE)); 189 vbo_emit_attr(ctx, arrays, MAT(FRONT_SPECULAR)); 190 vbo_emit_attr(ctx, arrays, MAT(FRONT_SHININESS)); 191 192 if (ctx->Light.Model.TwoSide) { 193 vbo_emit_attr(ctx, arrays, MAT(BACK_AMBIENT)); 194 vbo_emit_attr(ctx, arrays, MAT(BACK_DIFFUSE)); 195 vbo_emit_attr(ctx, arrays, MAT(BACK_SPECULAR)); 196 vbo_emit_attr(ctx, arrays, MAT(BACK_SHININESS)); 197 } 198 } 199 200 vbo_emit_attr(ctx, arrays, VERT_ATTRIB_POS); 201 } 202 203 static int 204 get_max_client_stride(struct gl_context *ctx, const struct gl_vertex_array **arrays) 205 { 206 struct nouveau_render_state *render = to_render_state(ctx); 207 int i, attr, s = 0; 208 209 FOR_EACH_BOUND_ATTR(render, i, attr) { 210 const struct gl_vertex_array *a = arrays[attr]; 211 212 if (!_mesa_is_bufferobj(a->BufferObj)) 213 s = MAX2(s, get_array_stride(ctx, a)); 214 } 215 216 return s; 217 } 218 219 static void 220 TAG(vbo_render_prims)(struct gl_context *ctx, 221 const struct _mesa_prim *prims, GLuint nr_prims, 222 const struct _mesa_index_buffer *ib, 223 GLboolean index_bounds_valid, 224 GLuint min_index, GLuint max_index, 225 struct gl_transform_feedback_object *tfb_vertcount, 226 unsigned stream, 227 struct gl_buffer_object *indirect); 228 229 static GLboolean 230 vbo_maybe_split(struct gl_context *ctx, const struct gl_vertex_array **arrays, 231 const struct _mesa_prim *prims, GLuint nr_prims, 232 const struct _mesa_index_buffer *ib, 233 GLuint min_index, GLuint max_index) 234 { 235 struct nouveau_context *nctx = to_nouveau_context(ctx); 236 struct nouveau_render_state *render = to_render_state(ctx); 237 struct nouveau_bufctx *bufctx = nctx->hw.bufctx; 238 unsigned pushbuf_avail = PUSHBUF_DWORDS - 2 * (bufctx->relocs + 239 render->attr_count), 240 vert_avail = get_max_vertices(ctx, NULL, pushbuf_avail), 241 idx_avail = get_max_vertices(ctx, ib, pushbuf_avail); 242 int stride; 243 244 /* Try to keep client buffers smaller than the scratch BOs. */ 245 if (render->mode == VBO && 246 (stride = get_max_client_stride(ctx, arrays))) 247 vert_avail = MIN2(vert_avail, 248 NOUVEAU_SCRATCH_SIZE / stride); 249 250 if (max_index - min_index > vert_avail || 251 (ib && ib->count > idx_avail)) { 252 struct split_limits limits = { 253 .max_verts = vert_avail, 254 .max_indices = idx_avail, 255 .max_vb_size = ~0, 256 }; 257 258 vbo_split_prims(ctx, arrays, prims, nr_prims, ib, min_index, 259 max_index, TAG(vbo_render_prims), &limits); 260 return GL_TRUE; 261 } 262 263 return GL_FALSE; 264 } 265 266 /* VBO rendering path. */ 267 268 static GLboolean 269 check_update_array(struct nouveau_array *a, unsigned offset, 270 struct nouveau_bo *bo, int *pdelta) 271 { 272 int delta = *pdelta; 273 GLboolean dirty; 274 275 if (a->bo == bo) { 276 if (delta < 0) 277 delta = ((int)offset - (int)a->offset) / a->stride; 278 279 dirty = (delta < 0 || 280 offset != (a->offset + delta * a->stride)); 281 } else { 282 dirty = GL_TRUE; 283 } 284 285 *pdelta = (dirty ? 0 : delta); 286 return dirty; 287 } 288 289 static void 290 vbo_bind_vertices(struct gl_context *ctx, const struct gl_vertex_array **arrays, 291 int base, unsigned min_index, unsigned max_index, int *pdelta) 292 { 293 struct nouveau_render_state *render = to_render_state(ctx); 294 struct nouveau_pushbuf *push = context_push(ctx); 295 struct nouveau_bo *bo[NUM_VERTEX_ATTRS]; 296 unsigned offset[NUM_VERTEX_ATTRS]; 297 GLboolean dirty = GL_FALSE; 298 int i, j, attr; 299 RENDER_LOCALS(ctx); 300 301 *pdelta = -1; 302 303 FOR_EACH_BOUND_ATTR(render, i, attr) { 304 const struct gl_vertex_array *array = arrays[attr]; 305 struct gl_buffer_object *obj = array->BufferObj; 306 struct nouveau_array *a = &render->attrs[attr]; 307 unsigned delta = (base + min_index) * array->StrideB; 308 309 bo[i] = NULL; 310 311 if (nouveau_bufferobj_hw(obj)) { 312 /* Array in a buffer obj. */ 313 nouveau_bo_ref(to_nouveau_bufferobj(obj)->bo, &bo[i]); 314 offset[i] = delta + (intptr_t)array->Ptr; 315 316 } else { 317 int n = max_index - min_index + 1; 318 char *sp = (char *)ADD_POINTERS( 319 nouveau_bufferobj_sys(obj), array->Ptr) + delta; 320 char *dp = nouveau_get_scratch(ctx, n * a->stride, 321 &bo[i], &offset[i]); 322 323 /* Array in client memory, move it to a 324 * scratch buffer obj. */ 325 for (j = 0; j < n; j++) 326 memcpy(dp + j * a->stride, 327 sp + j * array->StrideB, 328 a->stride); 329 } 330 331 dirty |= check_update_array(a, offset[i], bo[i], pdelta); 332 } 333 334 *pdelta -= min_index; 335 336 if (dirty) { 337 /* Buffers changed, update the attribute binding. */ 338 FOR_EACH_BOUND_ATTR(render, i, attr) { 339 struct nouveau_array *a = &render->attrs[attr]; 340 341 nouveau_bo_ref(NULL, &a->bo); 342 a->offset = offset[i]; 343 a->bo = bo[i]; 344 } 345 346 TAG(render_release_vertices)(ctx); 347 TAG(render_bind_vertices)(ctx); 348 } else { 349 /* Just cleanup. */ 350 FOR_EACH_BOUND_ATTR(render, i, attr) 351 nouveau_bo_ref(NULL, &bo[i]); 352 } 353 354 BATCH_VALIDATE(); 355 } 356 357 static void 358 vbo_draw_vbo(struct gl_context *ctx, const struct gl_vertex_array **arrays, 359 const struct _mesa_prim *prims, GLuint nr_prims, 360 const struct _mesa_index_buffer *ib, GLuint min_index, 361 GLuint max_index) 362 { 363 struct nouveau_context *nctx = to_nouveau_context(ctx); 364 struct nouveau_pushbuf *push = context_push(ctx); 365 dispatch_t dispatch = get_array_dispatch(&to_render_state(ctx)->ib); 366 int i, delta = 0, basevertex = 0; 367 RENDER_LOCALS(ctx); 368 369 TAG(render_set_format)(ctx); 370 371 for (i = 0; i < nr_prims; i++) { 372 unsigned start = prims[i].start, 373 count = prims[i].count; 374 375 if (i == 0 || basevertex != prims[i].basevertex) { 376 basevertex = prims[i].basevertex; 377 vbo_bind_vertices(ctx, arrays, basevertex, min_index, 378 max_index, &delta); 379 380 nouveau_pushbuf_bufctx(push, nctx->hw.bufctx); 381 if (nouveau_pushbuf_validate(push)) { 382 nouveau_pushbuf_bufctx(push, NULL); 383 return; 384 } 385 } 386 387 if (count > get_max_vertices(ctx, ib, PUSH_AVAIL(push))) 388 PUSH_SPACE(push, PUSHBUF_DWORDS); 389 390 BATCH_BEGIN(nvgl_primitive(prims[i].mode)); 391 dispatch(ctx, start, delta, count); 392 BATCH_END(); 393 } 394 395 nouveau_pushbuf_bufctx(push, NULL); 396 TAG(render_release_vertices)(ctx); 397 } 398 399 /* Immediate rendering path. */ 400 401 static unsigned 402 extract_id(struct nouveau_array *a, int i, int j) 403 { 404 return j; 405 } 406 407 static void 408 vbo_draw_imm(struct gl_context *ctx, const struct gl_vertex_array **arrays, 409 const struct _mesa_prim *prims, GLuint nr_prims, 410 const struct _mesa_index_buffer *ib, GLuint min_index, 411 GLuint max_index) 412 { 413 struct nouveau_render_state *render = to_render_state(ctx); 414 struct nouveau_context *nctx = to_nouveau_context(ctx); 415 struct nouveau_pushbuf *push = context_push(ctx); 416 extract_u_t extract = ib ? render->ib.extract_u : extract_id; 417 int i, j, k, attr; 418 RENDER_LOCALS(ctx); 419 420 nouveau_pushbuf_bufctx(push, nctx->hw.bufctx); 421 if (nouveau_pushbuf_validate(push)) { 422 nouveau_pushbuf_bufctx(push, NULL); 423 return; 424 } 425 426 for (i = 0; i < nr_prims; i++) { 427 unsigned start = prims[i].start, 428 end = start + prims[i].count; 429 430 if (prims[i].count > get_max_vertices(ctx, ib, 431 PUSH_AVAIL(push))) 432 PUSH_SPACE(push, PUSHBUF_DWORDS); 433 434 BATCH_BEGIN(nvgl_primitive(prims[i].mode)); 435 436 for (; start < end; start++) { 437 j = prims[i].basevertex + 438 extract(&render->ib, 0, start); 439 440 FOR_EACH_BOUND_ATTR(render, k, attr) 441 EMIT_IMM(ctx, &render->attrs[attr], j); 442 } 443 444 BATCH_END(); 445 } 446 447 nouveau_pushbuf_bufctx(push, NULL); 448 } 449 450 /* draw_prims entry point when we're doing hw-tnl. */ 451 452 static void 453 TAG(vbo_render_prims)(struct gl_context *ctx, 454 const struct _mesa_prim *prims, GLuint nr_prims, 455 const struct _mesa_index_buffer *ib, 456 GLboolean index_bounds_valid, 457 GLuint min_index, GLuint max_index, 458 struct gl_transform_feedback_object *tfb_vertcount, 459 unsigned stream, 460 struct gl_buffer_object *indirect) 461 { 462 struct nouveau_render_state *render = to_render_state(ctx); 463 const struct gl_vertex_array **arrays = ctx->Array._DrawArrays; 464 465 if (!index_bounds_valid) 466 vbo_get_minmax_indices(ctx, prims, ib, &min_index, &max_index, 467 nr_prims); 468 469 vbo_choose_render_mode(ctx, arrays); 470 vbo_choose_attrs(ctx, arrays); 471 472 if (vbo_maybe_split(ctx, arrays, prims, nr_prims, ib, min_index, 473 max_index)) 474 return; 475 476 vbo_init_arrays(ctx, ib, arrays); 477 478 if (render->mode == VBO) 479 vbo_draw_vbo(ctx, arrays, prims, nr_prims, ib, min_index, 480 max_index); 481 else 482 vbo_draw_imm(ctx, arrays, prims, nr_prims, ib, min_index, 483 max_index); 484 485 vbo_deinit_arrays(ctx, ib, arrays); 486 } 487 488 /* VBO rendering entry points. */ 489 490 static void 491 TAG(vbo_check_render_prims)(struct gl_context *ctx, 492 const struct _mesa_prim *prims, GLuint nr_prims, 493 const struct _mesa_index_buffer *ib, 494 GLboolean index_bounds_valid, 495 GLuint min_index, GLuint max_index, 496 struct gl_transform_feedback_object *tfb_vertcount, 497 unsigned stream, 498 struct gl_buffer_object *indirect) 499 { 500 struct nouveau_context *nctx = to_nouveau_context(ctx); 501 502 nouveau_validate_framebuffer(ctx); 503 504 if (nctx->fallback == HWTNL) 505 TAG(vbo_render_prims)(ctx, prims, nr_prims, ib, 506 index_bounds_valid, min_index, max_index, 507 tfb_vertcount, stream, indirect); 508 509 if (nctx->fallback == SWTNL) 510 _tnl_draw_prims(ctx, prims, nr_prims, ib, 511 index_bounds_valid, min_index, max_index, 512 tfb_vertcount, stream, indirect); 513 } 514 515 void 516 TAG(vbo_init)(struct gl_context *ctx) 517 { 518 struct nouveau_render_state *render = to_render_state(ctx); 519 int i; 520 521 for (i = 0; i < VERT_ATTRIB_MAX; i++) 522 render->map[i] = -1; 523 524 vbo_set_draw_func(ctx, TAG(vbo_check_render_prims)); 525 vbo_use_buffer_objects(ctx); 526 } 527 528 void 529 TAG(vbo_destroy)(struct gl_context *ctx) 530 { 531 } 532
