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_translate.h"
  36 #include "util/u_inlines.h"
  37 #include "util/u_memory.h"
  38
  39 static void *
  40 etna_create_sampler_state(struct pipe_context *pipe,
  41                           const struct pipe_sampler_state *ss)
  42 {
  43    struct etna_sampler_state *cs = CALLOC_STRUCT(etna_sampler_state);
  44
  45    if (!cs)
  46       return NULL;
  47
  48    cs->TE_SAMPLER_CONFIG0 =
  49       VIVS_TE_SAMPLER_CONFIG0_UWRAP(translate_texture_wrapmode(ss->wrap_s)) |
  50       VIVS_TE_SAMPLER_CONFIG0_VWRAP(translate_texture_wrapmode(ss->wrap_t)) |
  51       VIVS_TE_SAMPLER_CONFIG0_MIN(translate_texture_filter(ss->min_img_filter)) |
  52       VIVS_TE_SAMPLER_CONFIG0_MIP(translate_texture_mipfilter(ss->min_mip_filter)) |
  53       VIVS_TE_SAMPLER_CONFIG0_MAG(translate_texture_filter(ss->mag_img_filter)) |
  54       COND(ss->normalized_coords, VIVS_TE_SAMPLER_CONFIG0_ROUND_UV);
  55    cs->TE_SAMPLER_CONFIG1 = 0; /* VIVS_TE_SAMPLER_CONFIG1 (swizzle, extended
  56                                   format) fully determined by sampler view */
  57    cs->TE_SAMPLER_LOD_CONFIG =
  58       COND(ss->lod_bias != 0.0, VIVS_TE_SAMPLER_LOD_CONFIG_BIAS_ENABLE) |
  59       VIVS_TE_SAMPLER_LOD_CONFIG_BIAS(etna_float_to_fixp55(ss->lod_bias));
  60
  61    if (ss->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
  62       cs->min_lod = etna_float_to_fixp55(ss->min_lod);
  63       cs->max_lod = etna_float_to_fixp55(ss->max_lod);
  64    } else {
  65       /* when not mipmapping, we need to set max/min lod so that always
  66        * lowest LOD is selected */
  67       cs->min_lod = cs->max_lod = etna_float_to_fixp55(ss->min_lod);
  68    }
  69
  70    return cs;
  71 }
  72
  73 static void
  74 etna_bind_sampler_states(struct pipe_context *pctx, enum pipe_shader_type shader,
  75                          unsigned start_slot, unsigned num_samplers,
  76                          void **samplers)
  77 {
  78    /* bind fragment sampler */
  79    struct etna_context *ctx = etna_context(pctx);
  80    int offset;
  81
  82    switch (shader) {
  83    case PIPE_SHADER_FRAGMENT:
  84       offset = 0;
  85       ctx->num_fragment_samplers = num_samplers;
  86       break;
  87    case PIPE_SHADER_VERTEX:
  88       offset = ctx->specs.vertex_sampler_offset;
  89       break;
  90    default:
  91       assert(!"Invalid shader");
  92       return;
  93    }
  94
  95    uint32_t mask = 1 << offset;
  96    for (int idx = 0; idx < num_samplers; ++idx, mask <<= 1) {
  97       ctx->sampler[offset + idx] = samplers[idx];
  98       if (samplers[idx])
  99          ctx->active_samplers |= mask;
 100       else
 101          ctx->active_samplers &= ~mask;
 102    }
 103
 104    ctx->dirty |= ETNA_DIRTY_SAMPLERS;
 105 }
 106
 107 static void
 108 etna_delete_sampler_state(struct pipe_context *pctx, void *ss)
 109 {
 110    FREE(ss);
 111 }
 112
 113 static void
 114 etna_update_sampler_source(struct pipe_sampler_view *view)
 115 {
 116    struct etna_resource *res = etna_resource(view->texture);
 117
 118    if (res->texture && etna_resource_older(etna_resource(res->texture), res)) {
 119       /* Texture is older than render buffer, copy the texture using RS */
 120       etna_copy_resource(view->context, res->texture, view->texture, 0,
 121                          view->texture->last_level);
 122       etna_resource(res->texture)->seqno = res->seqno;
 123    } else if (etna_resource_needs_flush(res)) {
 124       etna_copy_resource(view->context, view->texture, view->texture, 0, 0);
 125       res->flush_seqno = res->seqno;
 126    }
 127 }
 128
 129 static bool
 130 etna_resource_sampler_compatible(struct etna_resource *res)
 131 {
 132    if (util_format_is_compressed(res->base.format))
 133       return true;
 134
 135    struct etna_screen *screen = etna_screen(res->base.screen);
 136    /* This GPU supports texturing from supertiled textures? */
 137    if (res->layout == ETNA_LAYOUT_SUPER_TILED && VIV_FEATURE(screen, chipMinorFeatures2, SUPERTILED_TEXTURE))
 138       return true;
 139
 140    /* TODO: LINEAR_TEXTURE_SUPPORT */
 141
 142    /* Otherwise, only support tiled layouts */
 143    if (res->layout != ETNA_LAYOUT_TILED)
 144       return false;
 145
 146    /* If we have HALIGN support, we can allow for the RS padding */
 147    if (VIV_FEATURE(screen, chipMinorFeatures1, TEXTURE_HALIGN))
 148       return true;
 149
 150    /* Non-HALIGN GPUs only accept 4x4 tile-aligned textures */
 151    if (res->halign != TEXTURE_HALIGN_FOUR)
 152       return false;
 153
 154    return true;
 155 }
 156
 157 static struct pipe_sampler_view *
 158 etna_create_sampler_view(struct pipe_context *pctx, struct pipe_resource *prsc,
 159                          const struct pipe_sampler_view *so)
 160 {
 161    struct etna_sampler_view *sv = CALLOC_STRUCT(etna_sampler_view);
 162    struct etna_resource *res = etna_resource(prsc);
 163    struct etna_context *ctx = etna_context(pctx);
 164    const uint32_t format = translate_texture_format(so->format);
 165    const bool ext = !!(format & EXT_FORMAT);
 166    const uint32_t swiz = get_texture_swiz(so->format, so->swizzle_r,
 167                                           so->swizzle_g, so->swizzle_b,
 168                                           so->swizzle_a);
 169
 170    if (!sv)
 171       return NULL;
 172
 173    if (!etna_resource_sampler_compatible(res)) {
 174       /* The original resource is not compatible with the sampler.
 175        * Allocate an appropriately tiled texture. */
 176       if (!res->texture) {
 177          struct pipe_resource templat = *prsc;
 178
 179          templat.bind &= ~(PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_RENDER_TARGET |
 180                            PIPE_BIND_BLENDABLE);
 181          res->texture =
 182             etna_resource_alloc(pctx->screen, ETNA_LAYOUT_TILED, &templat);
 183       }
 184
 185       if (!res->texture) {
 186          free(sv);
 187          return NULL;
 188       }
 189       res = etna_resource(res->texture);
 190    }
 191
 192    sv->base = *so;
 193    pipe_reference_init(&sv->base.reference, 1);
 194    sv->base.texture = NULL;
 195    pipe_resource_reference(&sv->base.texture, prsc);
 196    sv->base.context = pctx;
 197
 198    /* merged with sampler state */
 199    sv->TE_SAMPLER_CONFIG0 = COND(!ext, VIVS_TE_SAMPLER_CONFIG0_FORMAT(format));
 200    sv->TE_SAMPLER_CONFIG0_MASK = 0xffffffff;
 201
 202    switch (sv->base.target) {
 203    case PIPE_TEXTURE_1D:
 204       /* For 1D textures, we will have a height of 1, so we can use 2D
 205        * but set T wrap to repeat */
 206       sv->TE_SAMPLER_CONFIG0_MASK = ~VIVS_TE_SAMPLER_CONFIG0_VWRAP__MASK;
 207       sv->TE_SAMPLER_CONFIG0 |= VIVS_TE_SAMPLER_CONFIG0_VWRAP(TEXTURE_WRAPMODE_REPEAT);
 208       /* fallthrough */
 209    case PIPE_TEXTURE_2D:
 210    case PIPE_TEXTURE_RECT:
 211       sv->TE_SAMPLER_CONFIG0 |= VIVS_TE_SAMPLER_CONFIG0_TYPE(TEXTURE_TYPE_2D);
 212       break;
 213    case PIPE_TEXTURE_CUBE:
 214       sv->TE_SAMPLER_CONFIG0 |= VIVS_TE_SAMPLER_CONFIG0_TYPE(TEXTURE_TYPE_CUBE_MAP);
 215       break;
 216    default:
 217       BUG("Unhandled texture target");
 218       free(sv);
 219       return NULL;
 220    }
 221
 222    sv->TE_SAMPLER_CONFIG1 = COND(ext, VIVS_TE_SAMPLER_CONFIG1_FORMAT_EXT(format)) |
 223                             VIVS_TE_SAMPLER_CONFIG1_HALIGN(res->halign) | swiz;
 224    sv->TE_SAMPLER_SIZE = VIVS_TE_SAMPLER_SIZE_WIDTH(res->base.width0) |
 225                          VIVS_TE_SAMPLER_SIZE_HEIGHT(res->base.height0);
 226    sv->TE_SAMPLER_LOG_SIZE =
 227       VIVS_TE_SAMPLER_LOG_SIZE_WIDTH(etna_log2_fixp55(res->base.width0)) |
 228       VIVS_TE_SAMPLER_LOG_SIZE_HEIGHT(etna_log2_fixp55(res->base.height0));
 229
 230    /* Set up levels-of-detail */
 231    for (int lod = 0; lod <= res->base.last_level; ++lod) {
 232       sv->TE_SAMPLER_LOD_ADDR[lod].bo = res->bo;
 233       sv->TE_SAMPLER_LOD_ADDR[lod].offset = res->levels[lod].offset;
 234       sv->TE_SAMPLER_LOD_ADDR[lod].flags = ETNA_RELOC_READ;
 235    }
 236    sv->min_lod = sv->base.u.tex.first_level << 5;
 237    sv->max_lod = MIN2(sv->base.u.tex.last_level, res->base.last_level) << 5;
 238
 239    /* Workaround for npot textures -- it appears that only CLAMP_TO_EDGE is
 240     * supported when the appropriate capability is not set. */
 241    if (!ctx->specs.npot_tex_any_wrap &&
 242        (!util_is_power_of_two(res->base.width0) || !util_is_power_of_two(res->base.height0))) {
 243       sv->TE_SAMPLER_CONFIG0_MASK = ~(VIVS_TE_SAMPLER_CONFIG0_UWRAP__MASK |
 244                                       VIVS_TE_SAMPLER_CONFIG0_VWRAP__MASK);
 245       sv->TE_SAMPLER_CONFIG0 |=
 246          VIVS_TE_SAMPLER_CONFIG0_UWRAP(TEXTURE_WRAPMODE_CLAMP_TO_EDGE) |
 247          VIVS_TE_SAMPLER_CONFIG0_VWRAP(TEXTURE_WRAPMODE_CLAMP_TO_EDGE);
 248    }
 249
 250    return &sv->base;
 251 }
 252
 253 static void
 254 etna_sampler_view_destroy(struct pipe_context *pctx,
 255                           struct pipe_sampler_view *view)
 256 {
 257    pipe_resource_reference(&view->texture, NULL);
 258    FREE(view);
 259 }
 260
 261 static void
 262 set_sampler_views(struct etna_context *ctx, unsigned start, unsigned end,
 263                   unsigned nr, struct pipe_sampler_view **views)
 264 {
 265    unsigned i, j;
 266    uint32_t mask = 1 << start;
 267
 268    for (i = start, j = 0; j < nr; i++, j++, mask <<= 1) {
 269       pipe_sampler_view_reference(&ctx->sampler_view[i], views[j]);
 270       if (views[j])
 271          ctx->active_sampler_views |= mask;
 272       else
 273          ctx->active_sampler_views &= ~mask;
 274    }
 275
 276    for (; i < end; i++, mask <<= 1) {
 277       pipe_sampler_view_reference(&ctx->sampler_view[i], NULL);
 278       ctx->active_sampler_views &= ~mask;
 279    }
 280 }
 281
 282 static inline void
 283 etna_fragtex_set_sampler_views(struct etna_context *ctx, unsigned nr,
 284                                struct pipe_sampler_view **views)
 285 {
 286    unsigned start = 0;
 287    unsigned end = start + ctx->specs.fragment_sampler_count;
 288
 289    set_sampler_views(ctx, start, end, nr, views);
 290    ctx->num_fragment_sampler_views = nr;
 291 }
 292
 293
 294 static inline void
 295 etna_vertex_set_sampler_views(struct etna_context *ctx, unsigned nr,
 296                               struct pipe_sampler_view **views)
 297 {
 298    unsigned start = ctx->specs.vertex_sampler_offset;
 299    unsigned end = start + ctx->specs.vertex_sampler_count;
 300
 301    set_sampler_views(ctx, start, end, nr, views);
 302 }
 303
 304 static void
 305 etna_set_sampler_views(struct pipe_context *pctx, enum pipe_shader_type shader,
 306                        unsigned start_slot, unsigned num_views,
 307                        struct pipe_sampler_view **views)
 308 {
 309    struct etna_context *ctx = etna_context(pctx);
 310    assert(start_slot == 0);
 311
 312    ctx->dirty |= ETNA_DIRTY_SAMPLER_VIEWS | ETNA_DIRTY_TEXTURE_CACHES;
 313
 314    for (unsigned idx = 0; idx < num_views; ++idx) {
 315       if (views[idx])
 316          etna_update_sampler_source(views[idx]);
 317    }
 318
 319    switch (shader) {
 320    case PIPE_SHADER_FRAGMENT:
 321       etna_fragtex_set_sampler_views(ctx, num_views, views);
 322       break;
 323    case PIPE_SHADER_VERTEX:
 324       etna_vertex_set_sampler_views(ctx, num_views, views);
 325       break;
 326    default:;
 327    }
 328 }
 329
 330 static void
 331 etna_texture_barrier(struct pipe_context *pctx, unsigned flags)
 332 {
 333    struct etna_context *ctx = etna_context(pctx);
 334    /* clear color and texture cache to make sure that texture unit reads
 335     * what has been written */
 336    etna_set_state(ctx->stream, VIVS_GL_FLUSH_CACHE, VIVS_GL_FLUSH_CACHE_COLOR | VIVS_GL_FLUSH_CACHE_TEXTURE);
 337 }
 338
 339 void
 340 etna_texture_init(struct pipe_context *pctx)
 341 {
 342    pctx->create_sampler_state = etna_create_sampler_state;
 343    pctx->bind_sampler_states = etna_bind_sampler_states;
 344    pctx->delete_sampler_state = etna_delete_sampler_state;
 345    pctx->set_sampler_views = etna_set_sampler_views;
 346    pctx->create_sampler_view = etna_create_sampler_view;
 347    pctx->sampler_view_destroy = etna_sampler_view_destroy;
 348    pctx->texture_barrier = etna_texture_barrier;
 349 }