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_desc.h"
  36 #include "etnaviv_texture_state.h"
  37 #include "etnaviv_translate.h"
  38 #include "util/u_inlines.h"
  39 #include "util/u_memory.h"
  40
  41 #include "drm-uapi/drm_fourcc.h"
  42
  43 static void
  44 etna_bind_sampler_states(struct pipe_context *pctx, enum pipe_shader_type shader,
  45                          unsigned start_slot, unsigned num_samplers,
  46                          void **samplers)
  47 {
  48    /* bind fragment sampler */
  49    struct etna_context *ctx = etna_context(pctx);
  50    int offset;
  51
  52    switch (shader) {
  53    case PIPE_SHADER_FRAGMENT:
  54       offset = 0;
  55       ctx->num_fragment_samplers = num_samplers;
  56       break;
  57    case PIPE_SHADER_VERTEX:
  58       offset = ctx->specs.vertex_sampler_offset;
  59       break;
  60    default:
  61       assert(!"Invalid shader");
  62       return;
  63    }
  64
  65    uint32_t mask = 1 << offset;
  66    for (int idx = 0; idx < num_samplers; ++idx, mask <<= 1) {
  67       ctx->sampler[offset + idx] = samplers[idx];
  68       if (samplers[idx])
  69          ctx->active_samplers |= mask;
  70       else
  71          ctx->active_samplers &= ~mask;
  72    }
  73
  74    ctx->dirty |= ETNA_DIRTY_SAMPLERS;
  75 }
  76
  77 static bool
  78 etna_configure_sampler_ts(struct etna_sampler_ts *sts, struct pipe_sampler_view *pview, bool enable)
  79 {
  80    bool dirty = (sts->enable != enable);
  81
  82    assert(sts);
  83    sts->enable = enable;
  84
  85    if (!enable) {
  86       sts->TS_SAMPLER_CONFIG = 0;
  87       sts->TS_SAMPLER_STATUS_BASE.bo = NULL;
  88       return dirty;
  89    }
  90
  91    struct etna_resource *rsc = etna_resource(pview->texture);
  92    struct etna_resource_level *lev = &rsc->levels[0];
  93
  94    if (lev->clear_value != sts->TS_SAMPLER_CLEAR_VALUE)
  95       dirty = true;
  96
  97    assert(rsc->ts_bo && lev->ts_valid);
  98
  99    sts->mode = lev->ts_mode;
 100    sts->TS_SAMPLER_CONFIG =
 101       VIVS_TS_SAMPLER_CONFIG_ENABLE |
 102       COND(lev->ts_compress_fmt >= 0, VIVS_TS_SAMPLER_CONFIG_COMPRESSION) |
 103       VIVS_TS_SAMPLER_CONFIG_COMPRESSION_FORMAT(lev->ts_compress_fmt);
 104    sts->TS_SAMPLER_CLEAR_VALUE = lev->clear_value;
 105    sts->TS_SAMPLER_CLEAR_VALUE2 = lev->clear_value >> 32;
 106    sts->TS_SAMPLER_STATUS_BASE.bo = rsc->ts_bo;
 107    sts->TS_SAMPLER_STATUS_BASE.offset = lev->ts_offset;
 108    sts->TS_SAMPLER_STATUS_BASE.flags = ETNA_RELOC_READ;
 109
 110    return dirty;
 111 }
 112
 113 /* Return true if the GPU can use sampler TS with this sampler view.
 114  * Sampler TS is an optimization used when rendering to textures, where
 115  * a resolve-in-place can be avoided when rendering has left a (valid) TS.
 116  */
 117 static bool
 118 etna_can_use_sampler_ts(struct pipe_sampler_view *view, int num)
 119 {
 120     /* Can use sampler TS when:
 121      * - the hardware supports sampler TS.
 122      * - the sampler view will be bound to sampler <VIVS_TS_SAMPLER__LEN.
 123      *   HALTI5 adds a mapping from sampler to sampler TS unit, but this is AFAIK
 124      *   absent on earlier models.
 125      * - it is a texture, not a buffer.
 126      * - the sampler view has a supported format for sampler TS.
 127      * - the sampler will have one LOD, and it happens to be level 0.
 128      *   (it is not sure if the hw supports it for other levels, but available
 129      *   state strongly suggests only one at a time).
 130      * - the resource TS is valid for level 0.
 131      */
 132    struct etna_resource *rsc = etna_resource(view->texture);
 133    struct etna_screen *screen = etna_screen(rsc->base.screen);
 134
 135    return VIV_FEATURE(screen, chipMinorFeatures2, TEXTURE_TILED_READ) &&
 136       num < VIVS_TS_SAMPLER__LEN &&
 137       rsc->base.target != PIPE_BUFFER &&
 138       (rsc->levels[0].ts_compress_fmt < 0 || screen->specs.v4_compression) &&
 139       view->u.tex.first_level == 0 && MIN2(view->u.tex.last_level, rsc->base.last_level) == 0 &&
 140       rsc->levels[0].ts_valid;
 141 }
 142
 143 void
 144 etna_update_sampler_source(struct pipe_sampler_view *view, int num)
 145 {
 146    struct etna_resource *base = etna_resource(view->texture);
 147    struct etna_resource *to = base, *from = base;
 148    struct etna_context *ctx = etna_context(view->context);
 149    bool enable_sampler_ts = false;
 150
 151    if (base->render && etna_resource_newer(etna_resource(base->render), base))
 152       from = etna_resource(base->render);
 153
 154    if (base->texture)
 155       to = etna_resource(base->texture);
 156
 157    if ((to != from) && etna_resource_older(to, from)) {
 158       etna_copy_resource(view->context, &to->base, &from->base, 0,
 159                          view->texture->last_level);
 160       to->seqno = from->seqno;
 161       ctx->dirty |= ETNA_DIRTY_TEXTURE_CACHES;
 162    } else if ((to == from) && etna_resource_needs_flush(to)) {
 163       if (ctx->ts_for_sampler_view && etna_can_use_sampler_ts(view, num)) {
 164          enable_sampler_ts = true;
 165          /* Do not set flush_seqno because the resolve-to-self was bypassed */
 166       } else {
 167          /* Resolve TS if needed */
 168          etna_copy_resource(view->context, &to->base, &from->base, 0,
 169                             view->texture->last_level);
 170          to->flush_seqno = from->seqno;
 171          ctx->dirty |= ETNA_DIRTY_TEXTURE_CACHES;
 172       }
 173   } else if ((to == from) && (to->flush_seqno < from->seqno)) {
 174       to->flush_seqno = from->seqno;
 175       ctx->dirty |= ETNA_DIRTY_TEXTURE_CACHES;
 176    }
 177    if (ctx->ts_for_sampler_view &&
 178        etna_configure_sampler_ts(ctx->ts_for_sampler_view(view), view, enable_sampler_ts)) {
 179       ctx->dirty |= ETNA_DIRTY_SAMPLER_VIEWS | ETNA_DIRTY_TEXTURE_CACHES;
 180       ctx->dirty_sampler_views |= (1 << num);
 181    }
 182 }
 183
 184 static bool
 185 etna_resource_sampler_compatible(struct etna_resource *res)
 186 {
 187    if (util_format_is_compressed(res->base.format))
 188       return true;
 189
 190    struct etna_screen *screen = etna_screen(res->base.screen);
 191    /* This GPU supports texturing from supertiled textures? */
 192    if (res->layout == ETNA_LAYOUT_SUPER_TILED && VIV_FEATURE(screen, chipMinorFeatures2, SUPERTILED_TEXTURE))
 193       return true;
 194
 195    /* This GPU supports texturing from linear textures? */
 196    if (res->layout == ETNA_LAYOUT_LINEAR && VIV_FEATURE(screen, chipMinorFeatures1, LINEAR_TEXTURE_SUPPORT))
 197       return true;
 198
 199    /* Otherwise, only support tiled layouts */
 200    if (res->layout != ETNA_LAYOUT_TILED)
 201       return false;
 202
 203    /* If we have HALIGN support, we can allow for the RS padding */
 204    if (VIV_FEATURE(screen, chipMinorFeatures1, TEXTURE_HALIGN))
 205       return true;
 206
 207    /* Non-HALIGN GPUs only accept 4x4 tile-aligned textures */
 208    if (res->halign != TEXTURE_HALIGN_FOUR)
 209       return false;
 210
 211    return true;
 212 }
 213
 214 struct etna_resource *
 215 etna_texture_handle_incompatible(struct pipe_context *pctx, struct pipe_resource *prsc)
 216 {
 217    struct etna_resource *res = etna_resource(prsc);
 218    if (!etna_resource_sampler_compatible(res)) {
 219       /* The original resource is not compatible with the sampler.
 220        * Allocate an appropriately tiled texture. */
 221       if (!res->texture) {
 222          struct pipe_resource templat = *prsc;
 223
 224          templat.bind &= ~(PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_RENDER_TARGET |
 225                            PIPE_BIND_BLENDABLE);
 226          res->texture =
 227             etna_resource_alloc(pctx->screen, ETNA_LAYOUT_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    mtx_lock(&ctx->lock);
 315    etna_set_state(ctx->stream, VIVS_GL_FLUSH_CACHE, VIVS_GL_FLUSH_CACHE_COLOR | VIVS_GL_FLUSH_CACHE_TEXTURE);
 316    mtx_unlock(&ctx->lock);
 317 }
 318
 319 uint32_t
 320 active_samplers_bits(struct etna_context *ctx)
 321 {
 322    return ctx->active_sampler_views & ctx->active_samplers;
 323 }
 324
 325 void
 326 etna_texture_init(struct pipe_context *pctx)
 327 {
 328    struct etna_context *ctx = etna_context(pctx);
 329
 330    pctx->bind_sampler_states = etna_bind_sampler_states;
 331    pctx->set_sampler_views = etna_set_sampler_views;
 332    pctx->texture_barrier = etna_texture_barrier;
 333
 334    if (ctx->specs.halti >= 5)
 335       etna_texture_desc_init(pctx);
 336    else
 337       etna_texture_state_init(pctx);
 338 }