src/gallium/drivers/freedreno/a6xx/fd6_texture.c

   1 /*
   2  * Copyright (C) 2016 Rob Clark <robclark@freedesktop.org>
   3  * Copyright © 2018 Google, Inc.
   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  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  * Authors:
  25  *    Rob Clark <robclark@freedesktop.org>
  26  */
  27
  28 #include "pipe/p_state.h"
  29 #include "util/u_string.h"
  30 #include "util/u_memory.h"
  31 #include "util/u_inlines.h"
  32 #include "util/u_format.h"
  33 #include "util/hash_table.h"
  34
  35 #include "fd6_texture.h"
  36 #include "fd6_format.h"
  37 #include "fd6_emit.h"
  38
  39 static void fd6_texture_state_destroy(struct fd6_texture_state *state);
  40
  41 static enum a6xx_tex_clamp
  42 tex_clamp(unsigned wrap, bool clamp_to_edge, bool *needs_border)
  43 {
  44         /* Hardware does not support _CLAMP, but we emulate it: */
  45         if (wrap == PIPE_TEX_WRAP_CLAMP) {
  46                 wrap = (clamp_to_edge) ?
  47                         PIPE_TEX_WRAP_CLAMP_TO_EDGE : PIPE_TEX_WRAP_CLAMP_TO_BORDER;
  48         }
  49
  50         switch (wrap) {
  51         case PIPE_TEX_WRAP_REPEAT:
  52                 return A6XX_TEX_REPEAT;
  53         case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
  54                 return A6XX_TEX_CLAMP_TO_EDGE;
  55         case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
  56                 *needs_border = true;
  57                 return A6XX_TEX_CLAMP_TO_BORDER;
  58         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
  59                 /* only works for PoT.. need to emulate otherwise! */
  60                 return A6XX_TEX_MIRROR_CLAMP;
  61         case PIPE_TEX_WRAP_MIRROR_REPEAT:
  62                 return A6XX_TEX_MIRROR_REPEAT;
  63         case PIPE_TEX_WRAP_MIRROR_CLAMP:
  64         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
  65                 /* these two we could perhaps emulate, but we currently
  66                  * just don't advertise PIPE_CAP_TEXTURE_MIRROR_CLAMP
  67                  */
  68         default:
  69                 DBG("invalid wrap: %u", wrap);
  70                 return 0;
  71         }
  72 }
  73
  74 static enum a6xx_tex_filter
  75 tex_filter(unsigned filter, bool aniso)
  76 {
  77         switch (filter) {
  78         case PIPE_TEX_FILTER_NEAREST:
  79                 return A6XX_TEX_NEAREST;
  80         case PIPE_TEX_FILTER_LINEAR:
  81                 return aniso ? A6XX_TEX_ANISO : A6XX_TEX_LINEAR;
  82         default:
  83                 DBG("invalid filter: %u", filter);
  84                 return 0;
  85         }
  86 }
  87
  88 static void *
  89 fd6_sampler_state_create(struct pipe_context *pctx,
  90                 const struct pipe_sampler_state *cso)
  91 {
  92         struct fd6_sampler_stateobj *so = CALLOC_STRUCT(fd6_sampler_stateobj);
  93         unsigned aniso = util_last_bit(MIN2(cso->max_anisotropy >> 1, 8));
  94         bool miplinear = false;
  95         bool clamp_to_edge;
  96
  97         if (!so)
  98                 return NULL;
  99
 100         so->base = *cso;
 101         so->seqno = ++fd6_context(fd_context(pctx))->tex_seqno;
 102
 103         if (cso->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
 104                 miplinear = true;
 105
 106         /*
 107          * For nearest filtering, _CLAMP means _CLAMP_TO_EDGE;  for linear
 108          * filtering, _CLAMP means _CLAMP_TO_BORDER while additionally
 109          * clamping the texture coordinates to [0.0, 1.0].
 110          *
 111          * The clamping will be taken care of in the shaders.  There are two
 112          * filters here, but let the minification one has a say.
 113          */
 114         clamp_to_edge = (cso->min_img_filter == PIPE_TEX_FILTER_NEAREST);
 115         if (!clamp_to_edge) {
 116                 so->saturate_s = (cso->wrap_s == PIPE_TEX_WRAP_CLAMP);
 117                 so->saturate_t = (cso->wrap_t == PIPE_TEX_WRAP_CLAMP);
 118                 so->saturate_r = (cso->wrap_r == PIPE_TEX_WRAP_CLAMP);
 119         }
 120
 121         so->needs_border = false;
 122         so->texsamp0 =
 123                 COND(miplinear, A6XX_TEX_SAMP_0_MIPFILTER_LINEAR_NEAR) |
 124                 A6XX_TEX_SAMP_0_XY_MAG(tex_filter(cso->mag_img_filter, aniso)) |
 125                 A6XX_TEX_SAMP_0_XY_MIN(tex_filter(cso->min_img_filter, aniso)) |
 126                 A6XX_TEX_SAMP_0_ANISO(aniso) |
 127                 A6XX_TEX_SAMP_0_WRAP_S(tex_clamp(cso->wrap_s, clamp_to_edge, &so->needs_border)) |
 128                 A6XX_TEX_SAMP_0_WRAP_T(tex_clamp(cso->wrap_t, clamp_to_edge, &so->needs_border)) |
 129                 A6XX_TEX_SAMP_0_WRAP_R(tex_clamp(cso->wrap_r, clamp_to_edge, &so->needs_border));
 130
 131         so->texsamp1 =
 132                 COND(!cso->seamless_cube_map, A6XX_TEX_SAMP_1_CUBEMAPSEAMLESSFILTOFF) |
 133                 COND(!cso->normalized_coords, A6XX_TEX_SAMP_1_UNNORM_COORDS);
 134
 135         if (cso->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
 136                 so->texsamp0 |= A6XX_TEX_SAMP_0_LOD_BIAS(cso->lod_bias);
 137                 so->texsamp1 |=
 138                         A6XX_TEX_SAMP_1_MIN_LOD(cso->min_lod) |
 139                         A6XX_TEX_SAMP_1_MAX_LOD(cso->max_lod);
 140         }
 141
 142         if (cso->compare_mode)
 143                 so->texsamp1 |= A6XX_TEX_SAMP_1_COMPARE_FUNC(cso->compare_func); /* maps 1:1 */
 144
 145         return so;
 146 }
 147
 148 static void
 149 fd6_sampler_state_delete(struct pipe_context *pctx, void *hwcso)
 150 {
 151         struct fd6_context *fd6_ctx = fd6_context(fd_context(pctx));
 152         struct fd6_sampler_stateobj *samp = hwcso;
 153
 154         hash_table_foreach(fd6_ctx->tex_cache, entry) {
 155                 struct fd6_texture_state *state = entry->data;
 156
 157                 for (unsigned i = 0; i < ARRAY_SIZE(state->key.samp); i++) {
 158                         if (samp->seqno == state->key.samp[i].seqno) {
 159                                 fd6_texture_state_destroy(entry->data);
 160                                 _mesa_hash_table_remove(fd6_ctx->tex_cache, entry);
 161                                 break;
 162                         }
 163                 }
 164         }
 165
 166         free(hwcso);
 167 }
 168
 169 static void
 170 fd6_sampler_states_bind(struct pipe_context *pctx,
 171                 enum pipe_shader_type shader, unsigned start,
 172                 unsigned nr, void **hwcso)
 173 {
 174         struct fd_context *ctx = fd_context(pctx);
 175         struct fd6_context *fd6_ctx = fd6_context(ctx);
 176         uint16_t saturate_s = 0, saturate_t = 0, saturate_r = 0;
 177         unsigned i;
 178
 179         if (!hwcso)
 180                 nr = 0;
 181
 182         for (i = 0; i < nr; i++) {
 183                 if (hwcso[i]) {
 184                         struct fd6_sampler_stateobj *sampler =
 185                                         fd6_sampler_stateobj(hwcso[i]);
 186                         if (sampler->saturate_s)
 187                                 saturate_s |= (1 << i);
 188                         if (sampler->saturate_t)
 189                                 saturate_t |= (1 << i);
 190                         if (sampler->saturate_r)
 191                                 saturate_r |= (1 << i);
 192                 }
 193         }
 194
 195         fd_sampler_states_bind(pctx, shader, start, nr, hwcso);
 196
 197         if (shader == PIPE_SHADER_FRAGMENT) {
 198                 fd6_ctx->fsaturate =
 199                         (saturate_s != 0) ||
 200                         (saturate_t != 0) ||
 201                         (saturate_r != 0);
 202                 fd6_ctx->fsaturate_s = saturate_s;
 203                 fd6_ctx->fsaturate_t = saturate_t;
 204                 fd6_ctx->fsaturate_r = saturate_r;
 205         } else if (shader == PIPE_SHADER_VERTEX) {
 206                 fd6_ctx->vsaturate =
 207                         (saturate_s != 0) ||
 208                         (saturate_t != 0) ||
 209                         (saturate_r != 0);
 210                 fd6_ctx->vsaturate_s = saturate_s;
 211                 fd6_ctx->vsaturate_t = saturate_t;
 212                 fd6_ctx->vsaturate_r = saturate_r;
 213         }
 214 }
 215
 216 static struct pipe_sampler_view *
 217 fd6_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
 218                 const struct pipe_sampler_view *cso)
 219 {
 220         struct fd6_pipe_sampler_view *so = CALLOC_STRUCT(fd6_pipe_sampler_view);
 221         struct fd_resource *rsc = fd_resource(prsc);
 222         enum pipe_format format = cso->format;
 223         unsigned lvl, layers;
 224
 225         if (!so)
 226                 return NULL;
 227
 228         if (format == PIPE_FORMAT_X32_S8X24_UINT) {
 229                 rsc = rsc->stencil;
 230                 format = rsc->base.format;
 231         }
 232
 233         so->base = *cso;
 234         pipe_reference(NULL, &prsc->reference);
 235         so->base.texture = prsc;
 236         so->base.reference.count = 1;
 237         so->base.context = pctx;
 238         so->seqno = ++fd6_context(fd_context(pctx))->tex_seqno;
 239
 240         if (cso->target == PIPE_BUFFER) {
 241                 unsigned elements = cso->u.buf.size / util_format_get_blocksize(format);
 242
 243                 lvl = 0;
 244                 so->texconst1 =
 245                         A6XX_TEX_CONST_1_WIDTH(elements & MASK(15)) |
 246                         A6XX_TEX_CONST_1_HEIGHT(elements >> 15);
 247                 so->texconst2 =
 248                         A6XX_TEX_CONST_2_UNK4 |
 249                         A6XX_TEX_CONST_2_UNK31;
 250                 so->offset = cso->u.buf.offset;
 251         } else {
 252                 unsigned miplevels;
 253
 254                 lvl = fd_sampler_first_level(cso);
 255                 miplevels = fd_sampler_last_level(cso) - lvl;
 256                 layers = cso->u.tex.last_layer - cso->u.tex.first_layer + 1;
 257
 258                 so->texconst0 |= A6XX_TEX_CONST_0_MIPLVLS(miplevels);
 259                 so->texconst1 =
 260                         A6XX_TEX_CONST_1_WIDTH(u_minify(prsc->width0, lvl)) |
 261                         A6XX_TEX_CONST_1_HEIGHT(u_minify(prsc->height0, lvl));
 262                 so->texconst2 =
 263                         A6XX_TEX_CONST_2_FETCHSIZE(fd6_pipe2fetchsize(format)) |
 264                         A6XX_TEX_CONST_2_PITCH(
 265                                         util_format_get_nblocksx(
 266                                                         format, rsc->slices[lvl].pitch) * rsc->cpp);
 267                 so->offset = fd_resource_offset(rsc, lvl, cso->u.tex.first_layer);
 268                 so->ubwc_offset = fd_resource_ubwc_offset(rsc, lvl, cso->u.tex.first_layer);
 269                 so->ubwc_enabled = fd_resource_ubwc_enabled(rsc, lvl);
 270         }
 271
 272         so->texconst0 |= fd6_tex_const_0(prsc, lvl, cso->format,
 273                                 cso->swizzle_r, cso->swizzle_g,
 274                                 cso->swizzle_b, cso->swizzle_a);
 275
 276         if (so->ubwc_enabled) {
 277                 so->texconst9 |= A6XX_TEX_CONST_9_FLAG_BUFFER_ARRAY_PITCH(rsc->ubwc_size);
 278                 so->texconst10 |= A6XX_TEX_CONST_10_FLAG_BUFFER_PITCH(rsc->ubwc_pitch);
 279         }
 280
 281         so->texconst2 |= A6XX_TEX_CONST_2_TYPE(fd6_tex_type(cso->target));
 282
 283         switch (cso->target) {
 284         case PIPE_TEXTURE_RECT:
 285         case PIPE_TEXTURE_1D:
 286         case PIPE_TEXTURE_2D:
 287                 so->texconst3 =
 288                         A6XX_TEX_CONST_3_ARRAY_PITCH(rsc->layer_size);
 289                 so->texconst5 =
 290                         A6XX_TEX_CONST_5_DEPTH(1);
 291                 break;
 292         case PIPE_TEXTURE_1D_ARRAY:
 293         case PIPE_TEXTURE_2D_ARRAY:
 294                 so->texconst3 =
 295                         A6XX_TEX_CONST_3_ARRAY_PITCH(rsc->layer_size);
 296                 so->texconst5 =
 297                         A6XX_TEX_CONST_5_DEPTH(layers);
 298                 break;
 299         case PIPE_TEXTURE_CUBE:
 300         case PIPE_TEXTURE_CUBE_ARRAY:
 301                 so->texconst3 =
 302                         A6XX_TEX_CONST_3_ARRAY_PITCH(rsc->layer_size);
 303                 so->texconst5 =
 304                         A6XX_TEX_CONST_5_DEPTH(layers / 6);
 305                 break;
 306         case PIPE_TEXTURE_3D:
 307                 so->texconst3 =
 308                         A6XX_TEX_CONST_3_MIN_LAYERSZ(rsc->slices[prsc->last_level].size0) |
 309                         A6XX_TEX_CONST_3_ARRAY_PITCH(rsc->slices[lvl].size0);
 310                 so->texconst5 =
 311                         A6XX_TEX_CONST_5_DEPTH(u_minify(prsc->depth0, lvl));
 312                 break;
 313         default:
 314                 break;
 315         }
 316
 317         if (so->ubwc_enabled) {
 318                 so->texconst3 |= A6XX_TEX_CONST_3_FLAG | A6XX_TEX_CONST_3_UNK27;
 319         }
 320
 321         return &so->base;
 322 }
 323
 324 static void
 325 fd6_sampler_view_destroy(struct pipe_context *pctx,
 326                 struct pipe_sampler_view *_view)
 327 {
 328         struct fd6_context *fd6_ctx = fd6_context(fd_context(pctx));
 329         struct fd6_pipe_sampler_view *view = fd6_pipe_sampler_view(_view);
 330
 331         hash_table_foreach(fd6_ctx->tex_cache, entry) {
 332                 struct fd6_texture_state *state = entry->data;
 333
 334                 for (unsigned i = 0; i < ARRAY_SIZE(state->key.view); i++) {
 335                         if (view->seqno == state->key.view[i].seqno) {
 336                                 fd6_texture_state_destroy(entry->data);
 337                                 _mesa_hash_table_remove(fd6_ctx->tex_cache, entry);
 338                                 break;
 339                         }
 340                 }
 341         }
 342
 343         pipe_resource_reference(&view->base.texture, NULL);
 344
 345         free(view);
 346 }
 347
 348
 349 static uint32_t
 350 key_hash(const void *_key)
 351 {
 352         const struct fd6_texture_key *key = _key;
 353         uint32_t hash = _mesa_fnv32_1a_offset_bias;
 354         hash = _mesa_fnv32_1a_accumulate_block(hash, key, sizeof(*key));
 355         return hash;
 356 }
 357
 358 static bool
 359 key_equals(const void *_a, const void *_b)
 360 {
 361         const struct fd6_texture_key *a = _a;
 362         const struct fd6_texture_key *b = _b;
 363         return memcmp(a, b, sizeof(struct fd6_texture_key)) == 0;
 364 }
 365
 366 struct fd6_texture_state *
 367 fd6_texture_state(struct fd_context *ctx, enum pipe_shader_type type,
 368                 struct fd_texture_stateobj *tex)
 369 {
 370         struct fd6_context *fd6_ctx = fd6_context(ctx);
 371         struct fd6_texture_key key;
 372         bool needs_border = false;
 373
 374         memset(&key, 0, sizeof(key));
 375
 376         for (unsigned i = 0; i < tex->num_textures; i++) {
 377                 if (!tex->textures[i])
 378                         continue;
 379
 380                 struct fd6_pipe_sampler_view *view =
 381                         fd6_pipe_sampler_view(tex->textures[i]);
 382
 383                 key.view[i].rsc_seqno = fd_resource(view->base.texture)->seqno;
 384                 key.view[i].seqno = view->seqno;
 385         }
 386
 387         for (unsigned i = 0; i < tex->num_samplers; i++) {
 388                 if (!tex->samplers[i])
 389                         continue;
 390
 391                 struct fd6_sampler_stateobj *sampler =
 392                         fd6_sampler_stateobj(tex->samplers[i]);
 393
 394                 key.samp[i].seqno = sampler->seqno;
 395
 396                 needs_border |= sampler->needs_border;
 397         }
 398
 399         key.bcolor_offset = fd6_border_color_offset(ctx, type, tex);
 400
 401         uint32_t hash = key_hash(&key);
 402         struct hash_entry *entry =
 403                 _mesa_hash_table_search_pre_hashed(fd6_ctx->tex_cache, hash, &key);
 404
 405         if (entry) {
 406                 return entry->data;
 407         }
 408
 409         struct fd6_texture_state *state = CALLOC_STRUCT(fd6_texture_state);
 410
 411         state->key = key;
 412         state->stateobj = fd_ringbuffer_new_object(ctx->pipe, 0x1000);
 413         state->needs_border = needs_border;
 414
 415         fd6_emit_textures(ctx->pipe, state->stateobj, type, tex, key.bcolor_offset,
 416                         NULL, NULL);
 417
 418         /* NOTE: uses copy of key in state obj, because pointer passed by caller
 419          * is probably on the stack
 420          */
 421         _mesa_hash_table_insert_pre_hashed(fd6_ctx->tex_cache, hash,
 422                         &state->key, state);
 423
 424         return state;
 425 }
 426
 427 static void
 428 fd6_texture_state_destroy(struct fd6_texture_state *state)
 429 {
 430         fd_ringbuffer_del(state->stateobj);
 431         free(state);
 432 }
 433
 434 void
 435 fd6_texture_init(struct pipe_context *pctx)
 436 {
 437         struct fd6_context *fd6_ctx = fd6_context(fd_context(pctx));
 438
 439         pctx->create_sampler_state = fd6_sampler_state_create;
 440         pctx->delete_sampler_state = fd6_sampler_state_delete;
 441         pctx->bind_sampler_states = fd6_sampler_states_bind;
 442
 443         pctx->create_sampler_view = fd6_sampler_view_create;
 444         pctx->sampler_view_destroy = fd6_sampler_view_destroy;
 445         pctx->set_sampler_views = fd_set_sampler_views;
 446
 447         fd6_ctx->tex_cache = _mesa_hash_table_create(NULL, key_hash, key_equals);
 448 }
 449
 450 void
 451 fd6_texture_fini(struct pipe_context *pctx)
 452 {
 453         struct fd6_context *fd6_ctx = fd6_context(fd_context(pctx));
 454
 455         hash_table_foreach(fd6_ctx->tex_cache, entry) {
 456                 fd6_texture_state_destroy(entry->data);
 457         }
 458         ralloc_free(fd6_ctx->tex_cache);
 459 }