src/gallium/drivers/etnaviv/etnaviv_texture.c

   1 /*
   2  * Copyright (c) 2012-2015 Etnaviv Project
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the
  12  * next paragraph) shall be included in all copies or substantial portions
  13  * of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Wladimir J. van der Laan <laanwj@gmail.com>
  25  */
  26
  27 #include "etnaviv_texture.h"
  28
  29 #include "hw/common.xml.h"
  30
  31 #include "etnaviv_clear_blit.h"
  32 #include "etnaviv_context.h"
  33 #include "etnaviv_emit.h"
  34 #include "etnaviv_format.h"
  35 #include "etnaviv_texture_state.h"
  36 #include "etnaviv_translate.h"
  37 #include "util/u_inlines.h"
  38 #include "util/u_memory.h"
  39
  40 #include "drm-uapi/drm_fourcc.h"
  41
  42 static void
  43 etna_bind_sampler_states(struct pipe_context *pctx, enum pipe_shader_type shader,
  44                          unsigned start_slot, unsigned num_samplers,
  45                          void **samplers)
  46 {
  47    /* bind fragment sampler */
  48    struct etna_context *ctx = etna_context(pctx);
  49    int offset;
  50
  51    switch (shader) {
  52    case PIPE_SHADER_FRAGMENT:
  53       offset = 0;
  54       ctx->num_fragment_samplers = num_samplers;
  55       break;
  56    case PIPE_SHADER_VERTEX:
  57       offset = ctx->specs.vertex_sampler_offset;
  58       break;
  59    default:
  60       assert(!"Invalid shader");
  61       return;
  62    }
  63
  64    uint32_t mask = 1 << offset;
  65    for (int idx = 0; idx < num_samplers; ++idx, mask <<= 1) {
  66       ctx->sampler[offset + idx] = samplers[idx];
  67       if (samplers[idx])
  68          ctx->active_samplers |= mask;
  69       else
  70          ctx->active_samplers &= ~mask;
  71    }
  72
  73    ctx->dirty |= ETNA_DIRTY_SAMPLERS;
  74 }
  75
  76 static bool
  77 etna_configure_sampler_ts(struct etna_sampler_ts *sts, struct pipe_sampler_view *pview, bool enable)
  78 {
  79    bool dirty = (sts->enable != enable);
  80
  81    assert(sts);
  82    sts->enable = enable;
  83
  84    if (!enable) {
  85       sts->TS_SAMPLER_CONFIG = 0;
  86       sts->TS_SAMPLER_STATUS_BASE.bo = NULL;
  87       return dirty;
  88    }
  89
  90    struct etna_resource *rsc = etna_resource(pview->texture);
  91    struct etna_resource_level *lev = &rsc->levels[0];
  92
  93    if (lev->clear_value != sts->TS_SAMPLER_CLEAR_VALUE)
  94       dirty = true;
  95
  96    assert(rsc->ts_bo && lev->ts_valid);
  97
  98    sts->mode = lev->ts_mode;
  99    sts->TS_SAMPLER_CONFIG =
 100       VIVS_TS_SAMPLER_CONFIG_ENABLE |
 101       COND(lev->ts_compress_fmt >= 0, VIVS_TS_SAMPLER_CONFIG_COMPRESSION) |
 102       VIVS_TS_SAMPLER_CONFIG_COMPRESSION_FORMAT(lev->ts_compress_fmt);
 103    sts->TS_SAMPLER_CLEAR_VALUE = lev->clear_value;
 104    sts->TS_SAMPLER_CLEAR_VALUE2 = lev->clear_value; /* To handle 64-bit formats this needs a different value */
 105    sts->TS_SAMPLER_STATUS_BASE.bo = rsc->ts_bo;
 106    sts->TS_SAMPLER_STATUS_BASE.offset = lev->ts_offset;
 107    sts->TS_SAMPLER_STATUS_BASE.flags = ETNA_RELOC_READ;
 108
 109    return dirty;
 110 }
 111
 112 /* Return true if the GPU can use sampler TS with this sampler view.
 113  * Sampler TS is an optimization used when rendering to textures, where
 114  * a resolve-in-place can be avoided when rendering has left a (valid) TS.
 115  */
 116 static bool
 117 etna_can_use_sampler_ts(struct pipe_sampler_view *view, int num)
 118 {
 119     /* Can use sampler TS when:
 120      * - the hardware supports sampler TS.
 121      * - the sampler view will be bound to sampler <VIVS_TS_SAMPLER__LEN.
 122      *   HALTI5 adds a mapping from sampler to sampler TS unit, but this is AFAIK
 123      *   absent on earlier models.
 124      * - it is a texture, not a buffer.
 125      * - the sampler view has a supported format for sampler TS.
 126      * - the sampler will have one LOD, and it happens to be level 0.
 127      *   (it is not sure if the hw supports it for other levels, but available
 128      *   state strongly suggests only one at a time).
 129      * - the resource TS is valid for level 0.
 130      */
 131    struct etna_resource *rsc = etna_resource(view->texture);
 132    struct etna_screen *screen = etna_screen(rsc->base.screen);
 133
 134    return VIV_FEATURE(screen, chipMinorFeatures2, TEXTURE_TILED_READ) &&
 135       num < VIVS_TS_SAMPLER__LEN &&
 136       rsc->base.target != PIPE_BUFFER &&
 137       (rsc->levels[0].ts_compress_fmt < 0 || screen->specs.v4_compression) &&
 138       view->u.tex.first_level == 0 && MIN2(view->u.tex.last_level, rsc->base.last_level) == 0 &&
 139       rsc->levels[0].ts_valid;
 140 }
 141
 142 void
 143 etna_update_sampler_source(struct pipe_sampler_view *view, int num)
 144 {
 145    struct etna_resource *base = etna_resource(view->texture);
 146    struct etna_resource *to = base, *from = base;
 147    struct etna_context *ctx = etna_context(view->context);
 148    bool enable_sampler_ts = false;
 149
 150    if (base->external && etna_resource_newer(etna_resource(base->external), base))
 151       from = etna_resource(base->external);
 152
 153    if (base->texture)
 154       to = etna_resource(base->texture);
 155
 156    if ((to != from) && etna_resource_older(to, from)) {
 157       etna_copy_resource(view->context, &to->base, &from->base, 0,
 158                          view->texture->last_level);
 159       to->seqno = from->seqno;
 160       ctx->dirty |= ETNA_DIRTY_TEXTURE_CACHES;
 161    } else if ((to == from) && etna_resource_needs_flush(to)) {
 162       if (ctx->ts_for_sampler_view && etna_can_use_sampler_ts(view, num)) {
 163          enable_sampler_ts = true;
 164          /* Do not set flush_seqno because the resolve-to-self was bypassed */
 165       } else {
 166          /* Resolve TS if needed */
 167          etna_copy_resource(view->context, &to->base, &from->base, 0,
 168                             view->texture->last_level);
 169          to->flush_seqno = from->seqno;
 170          ctx->dirty |= ETNA_DIRTY_TEXTURE_CACHES;
 171       }
 172   } else if ((to == from) && (to->flush_seqno < from->seqno)) {
 173       to->flush_seqno = from->seqno;
 174       ctx->dirty |= ETNA_DIRTY_TEXTURE_CACHES;
 175    }
 176    if (ctx->ts_for_sampler_view &&
 177        etna_configure_sampler_ts(ctx->ts_for_sampler_view(view), view, enable_sampler_ts)) {
 178       ctx->dirty |= ETNA_DIRTY_SAMPLER_VIEWS | ETNA_DIRTY_TEXTURE_CACHES;
 179       ctx->dirty_sampler_views |= (1 << num);
 180    }
 181 }
 182
 183 static bool
 184 etna_resource_sampler_compatible(struct etna_resource *res)
 185 {
 186    if (util_format_is_compressed(res->base.format))
 187       return true;
 188
 189    struct etna_screen *screen = etna_screen(res->base.screen);
 190    /* This GPU supports texturing from supertiled textures? */
 191    if (res->layout == ETNA_LAYOUT_SUPER_TILED && VIV_FEATURE(screen, chipMinorFeatures2, SUPERTILED_TEXTURE))
 192       return true;
 193
 194    /* This GPU supports texturing from linear textures? */
 195    if (res->layout == ETNA_LAYOUT_LINEAR && VIV_FEATURE(screen, chipMinorFeatures1, LINEAR_TEXTURE_SUPPORT))
 196       return true;
 197
 198    /* Otherwise, only support tiled layouts */
 199    if (res->layout != ETNA_LAYOUT_TILED)
 200       return false;
 201
 202    /* If we have HALIGN support, we can allow for the RS padding */
 203    if (VIV_FEATURE(screen, chipMinorFeatures1, TEXTURE_HALIGN))
 204       return true;
 205
 206    /* Non-HALIGN GPUs only accept 4x4 tile-aligned textures */
 207    if (res->halign != TEXTURE_HALIGN_FOUR)
 208       return false;
 209
 210    return true;
 211 }
 212
 213 struct etna_resource *
 214 etna_texture_handle_incompatible(struct pipe_context *pctx, struct pipe_resource *prsc)
 215 {
 216    struct etna_resource *res = etna_resource(prsc);
 217    if (!etna_resource_sampler_compatible(res)) {
 218       /* The original resource is not compatible with the sampler.
 219        * Allocate an appropriately tiled texture. */
 220       if (!res->texture) {
 221          struct pipe_resource templat = *prsc;
 222
 223          templat.bind &= ~(PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_RENDER_TARGET |
 224                            PIPE_BIND_BLENDABLE);
 225          res->texture =
 226             etna_resource_alloc(pctx->screen, ETNA_LAYOUT_TILED,
 227                                 ETNA_ADDRESSING_MODE_TILED,
 228                                 DRM_FORMAT_MOD_LINEAR, &templat);
 229       }
 230
 231       if (!res->texture) {
 232          return NULL;
 233       }
 234       res = etna_resource(res->texture);
 235    }
 236    return res;
 237 }
 238
 239 static void
 240 set_sampler_views(struct etna_context *ctx, unsigned start, unsigned end,
 241                   unsigned nr, struct pipe_sampler_view **views)
 242 {
 243    unsigned i, j;
 244    uint32_t mask = 1 << start;
 245    uint32_t prev_active_sampler_views = ctx->active_sampler_views;
 246
 247    for (i = start, j = 0; j < nr; i++, j++, mask <<= 1) {
 248       pipe_sampler_view_reference(&ctx->sampler_view[i], views[j]);
 249       if (views[j]) {
 250          ctx->active_sampler_views |= mask;
 251          ctx->dirty_sampler_views |= mask;
 252       } else
 253          ctx->active_sampler_views &= ~mask;
 254    }
 255
 256    for (; i < end; i++, mask <<= 1) {
 257       pipe_sampler_view_reference(&ctx->sampler_view[i], NULL);
 258       ctx->active_sampler_views &= ~mask;
 259    }
 260
 261    /* sampler views that changed state (even to inactive) are also dirty */
 262    ctx->dirty_sampler_views |= ctx->active_sampler_views ^ prev_active_sampler_views;
 263 }
 264
 265 static inline void
 266 etna_fragtex_set_sampler_views(struct etna_context *ctx, unsigned nr,
 267                                struct pipe_sampler_view **views)
 268 {
 269    unsigned start = 0;
 270    unsigned end = start + ctx->specs.fragment_sampler_count;
 271
 272    set_sampler_views(ctx, start, end, nr, views);
 273    ctx->num_fragment_sampler_views = nr;
 274 }
 275
 276
 277 static inline void
 278 etna_vertex_set_sampler_views(struct etna_context *ctx, unsigned nr,
 279                               struct pipe_sampler_view **views)
 280 {
 281    unsigned start = ctx->specs.vertex_sampler_offset;
 282    unsigned end = start + ctx->specs.vertex_sampler_count;
 283
 284    set_sampler_views(ctx, start, end, nr, views);
 285 }
 286
 287 static void
 288 etna_set_sampler_views(struct pipe_context *pctx, enum pipe_shader_type shader,
 289                        unsigned start_slot, unsigned num_views,
 290                        struct pipe_sampler_view **views)
 291 {
 292    struct etna_context *ctx = etna_context(pctx);
 293    assert(start_slot == 0);
 294
 295    ctx->dirty |= ETNA_DIRTY_SAMPLER_VIEWS | ETNA_DIRTY_TEXTURE_CACHES;
 296
 297    switch (shader) {
 298    case PIPE_SHADER_FRAGMENT:
 299       etna_fragtex_set_sampler_views(ctx, num_views, views);
 300       break;
 301    case PIPE_SHADER_VERTEX:
 302       etna_vertex_set_sampler_views(ctx, num_views, views);
 303       break;
 304    default:;
 305    }
 306 }
 307
 308 static void
 309 etna_texture_barrier(struct pipe_context *pctx, unsigned flags)
 310 {
 311    struct etna_context *ctx = etna_context(pctx);
 312    /* clear color and texture cache to make sure that texture unit reads
 313     * what has been written */
 314    etna_set_state(ctx->stream, VIVS_GL_FLUSH_CACHE, VIVS_GL_FLUSH_CACHE_COLOR | VIVS_GL_FLUSH_CACHE_TEXTURE);
 315 }
 316
 317 uint32_t
 318 active_samplers_bits(struct etna_context *ctx)
 319 {
 320    return ctx->active_sampler_views & ctx->active_samplers;
 321 }
 322
 323 void
 324 etna_texture_init(struct pipe_context *pctx)
 325 {
 326    pctx->bind_sampler_states = etna_bind_sampler_states;
 327    pctx->set_sampler_views = etna_set_sampler_views;
 328    pctx->texture_barrier = etna_texture_barrier;
 329    etna_texture_state_init(pctx);
 330 }