src/mesa/drivers/dri/nouveau/nouveau_vbo_t.c

   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_client_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_client_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_client_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_client_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_client_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_client_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_client_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_client_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_client_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_client_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                       struct gl_buffer_object *indirect);
 227
 228 static GLboolean
 229 vbo_maybe_split(struct gl_context *ctx, const struct gl_client_array **arrays,
 230             const struct _mesa_prim *prims, GLuint nr_prims,
 231             const struct _mesa_index_buffer *ib,
 232             GLuint min_index, GLuint max_index)
 233 {
 234         struct nouveau_context *nctx = to_nouveau_context(ctx);
 235         struct nouveau_render_state *render = to_render_state(ctx);
 236         struct nouveau_bufctx *bufctx = nctx->hw.bufctx;
 237         unsigned pushbuf_avail = PUSHBUF_DWORDS - 2 * (bufctx->relocs +
 238                                                        render->attr_count),
 239                 vert_avail = get_max_vertices(ctx, NULL, pushbuf_avail),
 240                 idx_avail = get_max_vertices(ctx, ib, pushbuf_avail);
 241         int stride;
 242
 243         /* Try to keep client buffers smaller than the scratch BOs. */
 244         if (render->mode == VBO &&
 245             (stride = get_max_client_stride(ctx, arrays)))
 246                     vert_avail = MIN2(vert_avail,
 247                                       NOUVEAU_SCRATCH_SIZE / stride);
 248
 249         if (max_index - min_index > vert_avail ||
 250             (ib && ib->count > idx_avail)) {
 251                 struct split_limits limits = {
 252                         .max_verts = vert_avail,
 253                         .max_indices = idx_avail,
 254                         .max_vb_size = ~0,
 255                 };
 256
 257                 vbo_split_prims(ctx, arrays, prims, nr_prims, ib, min_index,
 258                                 max_index, TAG(vbo_render_prims), &limits);
 259                 return GL_TRUE;
 260         }
 261
 262         return GL_FALSE;
 263 }
 264
 265 /* VBO rendering path. */
 266
 267 static GLboolean
 268 check_update_array(struct nouveau_array *a, unsigned offset,
 269                    struct nouveau_bo *bo, int *pdelta)
 270 {
 271         int delta = *pdelta;
 272         GLboolean dirty;
 273
 274         if (a->bo == bo) {
 275                 if (delta < 0)
 276                         delta = ((int)offset - (int)a->offset) / a->stride;
 277
 278                 dirty = (delta < 0 ||
 279                          offset != (a->offset + delta * a->stride));
 280         } else {
 281                 dirty = GL_TRUE;
 282         }
 283
 284         *pdelta = (dirty ? 0 : delta);
 285         return dirty;
 286 }
 287
 288 static void
 289 vbo_bind_vertices(struct gl_context *ctx, const struct gl_client_array **arrays,
 290                   int base, unsigned min_index, unsigned max_index, int *pdelta)
 291 {
 292         struct nouveau_render_state *render = to_render_state(ctx);
 293         struct nouveau_pushbuf *push = context_push(ctx);
 294         struct nouveau_bo *bo[NUM_VERTEX_ATTRS];
 295         unsigned offset[NUM_VERTEX_ATTRS];
 296         GLboolean dirty = GL_FALSE;
 297         int i, j, attr;
 298         RENDER_LOCALS(ctx);
 299
 300         *pdelta = -1;
 301
 302         FOR_EACH_BOUND_ATTR(render, i, attr) {
 303                 const struct gl_client_array *array = arrays[attr];
 304                 struct gl_buffer_object *obj = array->BufferObj;
 305                 struct nouveau_array *a = &render->attrs[attr];
 306                 unsigned delta = (base + min_index) * array->StrideB;
 307
 308                 bo[i] = NULL;
 309
 310                 if (nouveau_bufferobj_hw(obj)) {
 311                         /* Array in a buffer obj. */
 312                         nouveau_bo_ref(to_nouveau_bufferobj(obj)->bo, &bo[i]);
 313                         offset[i] = delta + (intptr_t)array->Ptr;
 314
 315                 } else {
 316                         int n = max_index - min_index + 1;
 317                         char *sp = (char *)ADD_POINTERS(
 318                                 nouveau_bufferobj_sys(obj), array->Ptr) + delta;
 319                         char *dp  = nouveau_get_scratch(ctx, n * a->stride,
 320                                                         &bo[i], &offset[i]);
 321
 322                         /* Array in client memory, move it to a
 323                          * scratch buffer obj. */
 324                         for (j = 0; j < n; j++)
 325                                 memcpy(dp + j * a->stride,
 326                                        sp + j * array->StrideB,
 327                                        a->stride);
 328                 }
 329
 330                 dirty |= check_update_array(a, offset[i], bo[i], pdelta);
 331         }
 332
 333         *pdelta -= min_index;
 334
 335         if (dirty) {
 336                 /* Buffers changed, update the attribute binding. */
 337                 FOR_EACH_BOUND_ATTR(render, i, attr) {
 338                         struct nouveau_array *a = &render->attrs[attr];
 339
 340                         nouveau_bo_ref(NULL, &a->bo);
 341                         a->offset = offset[i];
 342                         a->bo = bo[i];
 343                 }
 344
 345                 TAG(render_release_vertices)(ctx);
 346                 TAG(render_bind_vertices)(ctx);
 347         } else {
 348                 /* Just cleanup. */
 349                 FOR_EACH_BOUND_ATTR(render, i, attr)
 350                         nouveau_bo_ref(NULL, &bo[i]);
 351         }
 352
 353         BATCH_VALIDATE();
 354 }
 355
 356 static void
 357 vbo_draw_vbo(struct gl_context *ctx, const struct gl_client_array **arrays,
 358              const struct _mesa_prim *prims, GLuint nr_prims,
 359              const struct _mesa_index_buffer *ib, GLuint min_index,
 360              GLuint max_index)
 361 {
 362         struct nouveau_context *nctx = to_nouveau_context(ctx);
 363         struct nouveau_pushbuf *push = context_push(ctx);
 364         dispatch_t dispatch = get_array_dispatch(&to_render_state(ctx)->ib);
 365         int i, delta = 0, basevertex = 0;
 366         RENDER_LOCALS(ctx);
 367
 368         TAG(render_set_format)(ctx);
 369
 370         for (i = 0; i < nr_prims; i++) {
 371                 unsigned start = prims[i].start,
 372                         count = prims[i].count;
 373
 374                 if (i == 0 || basevertex != prims[i].basevertex) {
 375                         basevertex = prims[i].basevertex;
 376                         vbo_bind_vertices(ctx, arrays, basevertex, min_index,
 377                                           max_index, &delta);
 378
 379                         nouveau_pushbuf_bufctx(push, nctx->hw.bufctx);
 380                         if (nouveau_pushbuf_validate(push)) {
 381                                 nouveau_pushbuf_bufctx(push, NULL);
 382                                 return;
 383                         }
 384                 }
 385
 386                 if (count > get_max_vertices(ctx, ib, PUSH_AVAIL(push)))
 387                         PUSH_SPACE(push, PUSHBUF_DWORDS);
 388
 389                 BATCH_BEGIN(nvgl_primitive(prims[i].mode));
 390                 dispatch(ctx, start, delta, count);
 391                 BATCH_END();
 392         }
 393
 394         nouveau_pushbuf_bufctx(push, NULL);
 395         TAG(render_release_vertices)(ctx);
 396 }
 397
 398 /* Immediate rendering path. */
 399
 400 static unsigned
 401 extract_id(struct nouveau_array *a, int i, int j)
 402 {
 403         return j;
 404 }
 405
 406 static void
 407 vbo_draw_imm(struct gl_context *ctx, const struct gl_client_array **arrays,
 408              const struct _mesa_prim *prims, GLuint nr_prims,
 409              const struct _mesa_index_buffer *ib, GLuint min_index,
 410              GLuint max_index)
 411 {
 412         struct nouveau_render_state *render = to_render_state(ctx);
 413         struct nouveau_context *nctx = to_nouveau_context(ctx);
 414         struct nouveau_pushbuf *push = context_push(ctx);
 415         extract_u_t extract = ib ? render->ib.extract_u : extract_id;
 416         int i, j, k, attr;
 417         RENDER_LOCALS(ctx);
 418
 419         nouveau_pushbuf_bufctx(push, nctx->hw.bufctx);
 420         if (nouveau_pushbuf_validate(push)) {
 421                 nouveau_pushbuf_bufctx(push, NULL);
 422                 return;
 423         }
 424
 425         for (i = 0; i < nr_prims; i++) {
 426                 unsigned start = prims[i].start,
 427                         end = start + prims[i].count;
 428
 429                 if (prims[i].count > get_max_vertices(ctx, ib,
 430                                                       PUSH_AVAIL(push)))
 431                         PUSH_SPACE(push, PUSHBUF_DWORDS);
 432
 433                 BATCH_BEGIN(nvgl_primitive(prims[i].mode));
 434
 435                 for (; start < end; start++) {
 436                         j = prims[i].basevertex +
 437                                 extract(&render->ib, 0, start);
 438
 439                         FOR_EACH_BOUND_ATTR(render, k, attr)
 440                                 EMIT_IMM(ctx, &render->attrs[attr], j);
 441                 }
 442
 443                 BATCH_END();
 444         }
 445
 446         nouveau_pushbuf_bufctx(push, NULL);
 447 }
 448
 449 /* draw_prims entry point when we're doing hw-tnl. */
 450
 451 static void
 452 TAG(vbo_render_prims)(struct gl_context *ctx,
 453                       const struct _mesa_prim *prims, GLuint nr_prims,
 454                       const struct _mesa_index_buffer *ib,
 455                       GLboolean index_bounds_valid,
 456                       GLuint min_index, GLuint max_index,
 457                       struct gl_transform_feedback_object *tfb_vertcount,
 458                       struct gl_buffer_object *indirect)
 459 {
 460         struct nouveau_render_state *render = to_render_state(ctx);
 461         const struct gl_client_array **arrays = ctx->Array._DrawArrays;
 462
 463         if (!index_bounds_valid)
 464                 vbo_get_minmax_indices(ctx, prims, ib, &min_index, &max_index,
 465                                        nr_prims);
 466
 467         vbo_choose_render_mode(ctx, arrays);
 468         vbo_choose_attrs(ctx, arrays);
 469
 470         if (vbo_maybe_split(ctx, arrays, prims, nr_prims, ib, min_index,
 471                             max_index))
 472                 return;
 473
 474         vbo_init_arrays(ctx, ib, arrays);
 475
 476         if (render->mode == VBO)
 477                 vbo_draw_vbo(ctx, arrays, prims, nr_prims, ib, min_index,
 478                              max_index);
 479         else
 480                 vbo_draw_imm(ctx, arrays, prims, nr_prims, ib, min_index,
 481                              max_index);
 482
 483         vbo_deinit_arrays(ctx, ib, arrays);
 484 }
 485
 486 /* VBO rendering entry points. */
 487
 488 static void
 489 TAG(vbo_check_render_prims)(struct gl_context *ctx,
 490                             const struct _mesa_prim *prims, GLuint nr_prims,
 491                             const struct _mesa_index_buffer *ib,
 492                             GLboolean index_bounds_valid,
 493                             GLuint min_index, GLuint max_index,
 494                             struct gl_transform_feedback_object *tfb_vertcount,
 495                             struct gl_buffer_object *indirect)
 496 {
 497         struct nouveau_context *nctx = to_nouveau_context(ctx);
 498
 499         nouveau_validate_framebuffer(ctx);
 500
 501         if (nctx->fallback == HWTNL)
 502                 TAG(vbo_render_prims)(ctx, prims, nr_prims, ib,
 503                                       index_bounds_valid, min_index, max_index,
 504                                       tfb_vertcount, indirect);
 505
 506         if (nctx->fallback == SWTNL)
 507                 _tnl_draw_prims(ctx, prims, nr_prims, ib,
 508                                 index_bounds_valid, min_index, max_index,
 509                                 tfb_vertcount, indirect);
 510 }
 511
 512 void
 513 TAG(vbo_init)(struct gl_context *ctx)
 514 {
 515         struct nouveau_render_state *render = to_render_state(ctx);
 516         int i;
 517
 518         for (i = 0; i < VERT_ATTRIB_MAX; i++)
 519                 render->map[i] = -1;
 520
 521         vbo_set_draw_func(ctx, TAG(vbo_check_render_prims));
 522         vbo_use_buffer_objects(ctx);
 523 }
 524
 525 void
 526 TAG(vbo_destroy)(struct gl_context *ctx)
 527 {
 528 }