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