src/gallium/drivers/svga/svga_pipe_sampler.c

   1 /**********************************************************
   2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 #include "pipe/p_defines.h"
  27 #include "util/u_bitmask.h"
  28 #include "util/format/u_format.h"
  29 #include "util/u_inlines.h"
  30 #include "util/u_math.h"
  31 #include "util/u_memory.h"
  32 #include "tgsi/tgsi_parse.h"
  33
  34 #include "svga_context.h"
  35 #include "svga_cmd.h"
  36 #include "svga_debug.h"
  37 #include "svga_resource_texture.h"
  38 #include "svga_surface.h"
  39 #include "svga_sampler_view.h"
  40
  41
  42 static inline unsigned
  43 translate_wrap_mode(unsigned wrap)
  44 {
  45    switch (wrap) {
  46    case PIPE_TEX_WRAP_REPEAT:
  47       return SVGA3D_TEX_ADDRESS_WRAP;
  48    case PIPE_TEX_WRAP_CLAMP:
  49       return SVGA3D_TEX_ADDRESS_CLAMP;
  50    case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
  51       /* Unfortunately SVGA3D_TEX_ADDRESS_EDGE not respected by
  52        * hardware.
  53        */
  54       return SVGA3D_TEX_ADDRESS_CLAMP;
  55    case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
  56       return SVGA3D_TEX_ADDRESS_BORDER;
  57    case PIPE_TEX_WRAP_MIRROR_REPEAT:
  58       return SVGA3D_TEX_ADDRESS_MIRROR;
  59    case PIPE_TEX_WRAP_MIRROR_CLAMP:
  60    case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
  61    case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
  62       return SVGA3D_TEX_ADDRESS_MIRRORONCE;
  63    default:
  64       assert(0);
  65       return SVGA3D_TEX_ADDRESS_WRAP;
  66    }
  67 }
  68
  69
  70 static inline unsigned
  71 translate_img_filter(unsigned filter)
  72 {
  73    switch (filter) {
  74    case PIPE_TEX_FILTER_NEAREST:
  75       return SVGA3D_TEX_FILTER_NEAREST;
  76    case PIPE_TEX_FILTER_LINEAR:
  77       return SVGA3D_TEX_FILTER_LINEAR;
  78    default:
  79       assert(0);
  80       return SVGA3D_TEX_FILTER_NEAREST;
  81    }
  82 }
  83
  84
  85 static inline unsigned
  86 translate_mip_filter(unsigned filter)
  87 {
  88    switch (filter) {
  89    case PIPE_TEX_MIPFILTER_NONE:
  90       return SVGA3D_TEX_FILTER_NONE;
  91    case PIPE_TEX_MIPFILTER_NEAREST:
  92       return SVGA3D_TEX_FILTER_NEAREST;
  93    case PIPE_TEX_MIPFILTER_LINEAR:
  94       return SVGA3D_TEX_FILTER_LINEAR;
  95    default:
  96       assert(0);
  97       return SVGA3D_TEX_FILTER_NONE;
  98    }
  99 }
 100
 101
 102 static uint8
 103 translate_comparison_func(unsigned func)
 104 {
 105    switch (func) {
 106    case PIPE_FUNC_NEVER:
 107       return SVGA3D_COMPARISON_NEVER;
 108    case PIPE_FUNC_LESS:
 109       return SVGA3D_COMPARISON_LESS;
 110    case PIPE_FUNC_EQUAL:
 111       return SVGA3D_COMPARISON_EQUAL;
 112    case PIPE_FUNC_LEQUAL:
 113       return SVGA3D_COMPARISON_LESS_EQUAL;
 114    case PIPE_FUNC_GREATER:
 115       return SVGA3D_COMPARISON_GREATER;
 116    case PIPE_FUNC_NOTEQUAL:
 117       return SVGA3D_COMPARISON_NOT_EQUAL;
 118    case PIPE_FUNC_GEQUAL:
 119       return SVGA3D_COMPARISON_GREATER_EQUAL;
 120    case PIPE_FUNC_ALWAYS:
 121       return SVGA3D_COMPARISON_ALWAYS;
 122    default:
 123       assert(!"Invalid comparison function");
 124       return SVGA3D_COMPARISON_ALWAYS;
 125    }
 126 }
 127
 128
 129 /**
 130  * Translate filtering state to vgpu10 format.
 131  */
 132 static SVGA3dFilter
 133 translate_filter_mode(unsigned img_filter,
 134                       unsigned min_filter,
 135                       unsigned mag_filter,
 136                       boolean anisotropic,
 137                       boolean compare)
 138 {
 139    SVGA3dFilter mode = 0;
 140
 141    if (img_filter == PIPE_TEX_FILTER_LINEAR)
 142       mode |= SVGA3D_FILTER_MIP_LINEAR;
 143    if (min_filter == PIPE_TEX_FILTER_LINEAR)
 144       mode |= SVGA3D_FILTER_MIN_LINEAR;
 145    if (mag_filter == PIPE_TEX_FILTER_LINEAR)
 146       mode |= SVGA3D_FILTER_MAG_LINEAR;
 147    if (anisotropic)
 148       mode |= SVGA3D_FILTER_ANISOTROPIC;
 149    if (compare)
 150       mode |= SVGA3D_FILTER_COMPARE;
 151
 152    return mode;
 153 }
 154
 155
 156 /**
 157  * Define a vgpu10 sampler state.
 158  */
 159 static void
 160 define_sampler_state_object(struct svga_context *svga,
 161                             struct svga_sampler_state *ss,
 162                             const struct pipe_sampler_state *ps)
 163 {
 164    uint8_t max_aniso = (uint8_t) 255; /* XXX fix me */
 165    boolean anisotropic;
 166    uint8 compare_func;
 167    SVGA3dFilter filter;
 168    SVGA3dRGBAFloat bcolor;
 169    float min_lod, max_lod;
 170
 171    assert(svga_have_vgpu10(svga));
 172
 173    anisotropic = ss->aniso_level > 1.0f;
 174
 175    filter = translate_filter_mode(ps->min_mip_filter,
 176                                   ps->min_img_filter,
 177                                   ps->mag_img_filter,
 178                                   anisotropic,
 179                                   ss->compare_mode);
 180
 181    compare_func = translate_comparison_func(ss->compare_func);
 182
 183    COPY_4V(bcolor.value, ps->border_color.f);
 184
 185    assert(ps->min_lod <= ps->max_lod);
 186
 187    if (ps->min_mip_filter == PIPE_TEX_MIPFILTER_NONE) {
 188       /* just use the base level image */
 189       min_lod = max_lod = 0.0f;
 190    }
 191    else {
 192       min_lod = ps->min_lod;
 193       max_lod = ps->max_lod;
 194    }
 195
 196    /* If shadow comparisons are enabled, create two sampler states: one
 197     * with the given shadow compare mode, another with shadow comparison off.
 198     * We need the later because in some cases, we have to do the shadow
 199     * compare in the shader.  So, we don't want to do it twice.
 200     */
 201    STATIC_ASSERT(PIPE_TEX_COMPARE_NONE == 0);
 202    STATIC_ASSERT(PIPE_TEX_COMPARE_R_TO_TEXTURE == 1);
 203    ss->id[1] = SVGA3D_INVALID_ID;
 204
 205    unsigned i;
 206    for (i = 0; i <= ss->compare_mode; i++) {
 207       ss->id[i] = util_bitmask_add(svga->sampler_object_id_bm);
 208
 209       SVGA_RETRY(svga, SVGA3D_vgpu10_DefineSamplerState
 210                  (svga->swc,
 211                   ss->id[i],
 212                   filter,
 213                   ss->addressu,
 214                   ss->addressv,
 215                   ss->addressw,
 216                   ss->lod_bias, /* float */
 217                   max_aniso,
 218                   compare_func,
 219                   bcolor,
 220                   min_lod,       /* float */
 221                   max_lod));      /* float */
 222
 223       /* turn off the shadow compare option for second iteration */
 224       filter &= ~SVGA3D_FILTER_COMPARE;
 225    }
 226 }
 227
 228
 229 static void *
 230 svga_create_sampler_state(struct pipe_context *pipe,
 231                           const struct pipe_sampler_state *sampler)
 232 {
 233    struct svga_context *svga = svga_context(pipe);
 234    struct svga_sampler_state *cso = CALLOC_STRUCT( svga_sampler_state );
 235
 236    if (!cso)
 237       return NULL;
 238
 239    cso->mipfilter = translate_mip_filter(sampler->min_mip_filter);
 240    cso->magfilter = translate_img_filter( sampler->mag_img_filter );
 241    cso->minfilter = translate_img_filter( sampler->min_img_filter );
 242    cso->aniso_level = MAX2( sampler->max_anisotropy, 1 );
 243    if (sampler->max_anisotropy)
 244       cso->magfilter = cso->minfilter = SVGA3D_TEX_FILTER_ANISOTROPIC;
 245    cso->lod_bias = sampler->lod_bias;
 246    cso->addressu = translate_wrap_mode(sampler->wrap_s);
 247    cso->addressv = translate_wrap_mode(sampler->wrap_t);
 248    cso->addressw = translate_wrap_mode(sampler->wrap_r);
 249    cso->normalized_coords = sampler->normalized_coords;
 250    cso->compare_mode = sampler->compare_mode;
 251    cso->compare_func = sampler->compare_func;
 252
 253    {
 254       uint32 r = float_to_ubyte(sampler->border_color.f[0]);
 255       uint32 g = float_to_ubyte(sampler->border_color.f[1]);
 256       uint32 b = float_to_ubyte(sampler->border_color.f[2]);
 257       uint32 a = float_to_ubyte(sampler->border_color.f[3]);
 258
 259       cso->bordercolor = (a << 24) | (r << 16) | (g << 8) | b;
 260    }
 261
 262    /* No SVGA3D support for:
 263     *    - min/max LOD clamping
 264     */
 265    cso->min_lod = 0;
 266    cso->view_min_lod = MAX2((int) (sampler->min_lod + 0.5), 0);
 267    cso->view_max_lod = MAX2((int) (sampler->max_lod + 0.5), 0);
 268
 269    /* Use min_mipmap */
 270    if (svga->debug.use_min_mipmap) {
 271       if (cso->view_min_lod == cso->view_max_lod) {
 272          cso->min_lod = cso->view_min_lod;
 273          cso->view_min_lod = 0;
 274          cso->view_max_lod = 1000; /* Just a high number */
 275          cso->mipfilter = SVGA3D_TEX_FILTER_NONE;
 276       }
 277    }
 278
 279    if (svga_have_vgpu10(svga)) {
 280       define_sampler_state_object(svga, cso, sampler);
 281    }
 282
 283    SVGA_DBG(DEBUG_SAMPLERS,
 284             "New sampler: min %u, view(min %u, max %u) lod, mipfilter %s\n",
 285             cso->min_lod, cso->view_min_lod, cso->view_max_lod,
 286             cso->mipfilter == SVGA3D_TEX_FILTER_NONE ? "SVGA3D_TEX_FILTER_NONE" : "SOMETHING");
 287
 288    svga->hud.num_sampler_objects++;
 289    SVGA_STATS_COUNT_INC(svga_screen(svga->pipe.screen)->sws,
 290                         SVGA_STATS_COUNT_SAMPLER);
 291
 292    return cso;
 293 }
 294
 295
 296 static void
 297 svga_bind_sampler_states(struct pipe_context *pipe,
 298                          enum pipe_shader_type shader,
 299                          unsigned start,
 300                          unsigned num,
 301                          void **samplers)
 302 {
 303    struct svga_context *svga = svga_context(pipe);
 304    unsigned i;
 305    boolean any_change = FALSE;
 306
 307    assert(shader < PIPE_SHADER_TYPES);
 308    assert(start + num <= PIPE_MAX_SAMPLERS);
 309
 310    /* Pre-VGPU10 only supports FS textures */
 311    if (!svga_have_vgpu10(svga) && shader != PIPE_SHADER_FRAGMENT)
 312       return;
 313
 314    for (i = 0; i < num; i++) {
 315       if (svga->curr.sampler[shader][start + i] != samplers[i])
 316          any_change = TRUE;
 317       svga->curr.sampler[shader][start + i] = samplers[i];
 318    }
 319
 320    if (!any_change) {
 321       return;
 322    }
 323
 324    /* find highest non-null sampler[] entry */
 325    {
 326       unsigned j = MAX2(svga->curr.num_samplers[shader], start + num);
 327       while (j > 0 && svga->curr.sampler[shader][j - 1] == NULL)
 328          j--;
 329       svga->curr.num_samplers[shader] = j;
 330    }
 331
 332    svga->dirty |= SVGA_NEW_SAMPLER;
 333 }
 334
 335
 336 static void
 337 svga_delete_sampler_state(struct pipe_context *pipe, void *sampler)
 338 {
 339    struct svga_sampler_state *ss = (struct svga_sampler_state *) sampler;
 340    struct svga_context *svga = svga_context(pipe);
 341
 342    if (svga_have_vgpu10(svga)) {
 343       unsigned i;
 344       for (i = 0; i < 2; i++) {
 345          if (ss->id[i] != SVGA3D_INVALID_ID) {
 346             svga_hwtnl_flush_retry(svga);
 347
 348             SVGA_RETRY(svga, SVGA3D_vgpu10_DestroySamplerState(svga->swc,
 349                                                                ss->id[i]));
 350             util_bitmask_clear(svga->sampler_object_id_bm, ss->id[i]);
 351          }
 352       }
 353    }
 354
 355    FREE(sampler);
 356    svga->hud.num_sampler_objects--;
 357 }
 358
 359
 360 static struct pipe_sampler_view *
 361 svga_create_sampler_view(struct pipe_context *pipe,
 362                          struct pipe_resource *texture,
 363                          const struct pipe_sampler_view *templ)
 364 {
 365    struct svga_context *svga = svga_context(pipe);
 366    struct svga_pipe_sampler_view *sv = CALLOC_STRUCT(svga_pipe_sampler_view);
 367
 368    if (!sv) {
 369       return NULL;
 370    }
 371
 372    sv->base = *templ;
 373    sv->base.reference.count = 1;
 374    sv->base.texture = NULL;
 375    pipe_resource_reference(&sv->base.texture, texture);
 376
 377    sv->base.context = pipe;
 378    sv->id = SVGA3D_INVALID_ID;
 379
 380    svga->hud.num_samplerview_objects++;
 381    SVGA_STATS_COUNT_INC(svga_screen(svga->pipe.screen)->sws,
 382                         SVGA_STATS_COUNT_SAMPLERVIEW);
 383
 384    return &sv->base;
 385 }
 386
 387
 388 static void
 389 svga_sampler_view_destroy(struct pipe_context *pipe,
 390                           struct pipe_sampler_view *view)
 391 {
 392    struct svga_context *svga = svga_context(pipe);
 393    struct svga_pipe_sampler_view *sv = svga_pipe_sampler_view(view);
 394
 395    if (svga_have_vgpu10(svga) && sv->id != SVGA3D_INVALID_ID) {
 396       assert(view->context == pipe);
 397
 398       svga_hwtnl_flush_retry(svga);
 399
 400       SVGA_RETRY(svga, SVGA3D_vgpu10_DestroyShaderResourceView(svga->swc,
 401                                                                sv->id));
 402       util_bitmask_clear(svga->sampler_view_id_bm, sv->id);
 403    }
 404
 405    pipe_resource_reference(&sv->base.texture, NULL);
 406
 407    FREE(sv);
 408    svga->hud.num_samplerview_objects--;
 409 }
 410
 411
 412 static void
 413 svga_set_sampler_views(struct pipe_context *pipe,
 414                        enum pipe_shader_type shader,
 415                        unsigned start,
 416                        unsigned num,
 417                        struct pipe_sampler_view **views)
 418 {
 419    struct svga_context *svga = svga_context(pipe);
 420    unsigned flag_1d = 0;
 421    unsigned flag_srgb = 0;
 422    uint i;
 423    boolean any_change = FALSE;
 424
 425    assert(shader < PIPE_SHADER_TYPES);
 426    assert(start + num <= ARRAY_SIZE(svga->curr.sampler_views[shader]));
 427
 428    /* Pre-VGPU10 only supports FS textures */
 429    if (!svga_have_vgpu10(svga) && shader != PIPE_SHADER_FRAGMENT)
 430       return;
 431
 432    SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_SETSAMPLERVIEWS);
 433
 434    /* This bit of code works around a quirk in the CSO module.
 435     * If start=num=0 it means all sampler views should be released.
 436     * Note that the CSO module treats sampler views for fragment shaders
 437     * differently than other shader types.
 438     */
 439    if (start == 0 && num == 0 && svga->curr.num_sampler_views[shader] > 0) {
 440       for (i = 0; i < svga->curr.num_sampler_views[shader]; i++) {
 441          pipe_sampler_view_reference(&svga->curr.sampler_views[shader][i],
 442                                      NULL);
 443       }
 444       any_change = TRUE;
 445    }
 446
 447    for (i = 0; i < num; i++) {
 448       enum pipe_texture_target target;
 449
 450       if (svga->curr.sampler_views[shader][start + i] != views[i]) {
 451          pipe_sampler_view_reference(&svga->curr.sampler_views[shader][start + i],
 452                                      views[i]);
 453          any_change = TRUE;
 454       }
 455
 456       if (!views[i])
 457          continue;
 458
 459       if (util_format_is_srgb(views[i]->format))
 460          flag_srgb |= 1 << (start + i);
 461
 462       target = views[i]->target;
 463       if (target == PIPE_TEXTURE_1D) {
 464          flag_1d |= 1 << (start + i);
 465       } else if (target == PIPE_TEXTURE_RECT) {
 466          /* If the size of the bound texture changes, we need to emit new
 467           * const buffer values.
 468           */
 469          svga->dirty |= SVGA_NEW_TEXTURE_CONSTS;
 470       } else if (target == PIPE_BUFFER) {
 471          /* If the size of the bound buffer changes, we need to emit new
 472           * const buffer values.
 473           */
 474          svga->dirty |= SVGA_NEW_TEXTURE_CONSTS;
 475       }
 476    }
 477
 478    if (!any_change) {
 479       goto done;
 480    }
 481
 482    /* find highest non-null sampler_views[] entry */
 483    {
 484       unsigned j = MAX2(svga->curr.num_sampler_views[shader], start + num);
 485       while (j > 0 && svga->curr.sampler_views[shader][j - 1] == NULL)
 486          j--;
 487       svga->curr.num_sampler_views[shader] = j;
 488    }
 489
 490    svga->dirty |= SVGA_NEW_TEXTURE_BINDING;
 491
 492    if (flag_srgb != svga->curr.tex_flags.flag_srgb ||
 493        flag_1d != svga->curr.tex_flags.flag_1d) {
 494       svga->dirty |= SVGA_NEW_TEXTURE_FLAGS;
 495       svga->curr.tex_flags.flag_1d = flag_1d;
 496       svga->curr.tex_flags.flag_srgb = flag_srgb;
 497    }
 498
 499    /* Check if any of the sampler view resources collide with the framebuffer
 500     * color buffers or depth stencil resource. If so, set the NEW_FRAME_BUFFER
 501     * dirty bit so that emit_framebuffer can be invoked to create backed view
 502     * for the conflicted surface view.
 503     */
 504    if (svga_check_sampler_framebuffer_resource_collision(svga, shader)) {
 505       svga->dirty |= SVGA_NEW_FRAME_BUFFER;
 506    }
 507
 508 done:
 509    SVGA_STATS_TIME_POP(svga_sws(svga));
 510 }
 511
 512 /**
 513  * Clean up sampler, sampler view state at context destruction time
 514  */
 515 void
 516 svga_cleanup_sampler_state(struct svga_context *svga)
 517 {
 518    enum pipe_shader_type shader;
 519
 520    for (shader = 0; shader <= PIPE_SHADER_TESS_EVAL; shader++) {
 521       unsigned i;
 522
 523       for (i = 0; i < svga->state.hw_draw.num_sampler_views[shader]; i++) {
 524          pipe_sampler_view_reference(&svga->state.hw_draw.sampler_views[shader][i],
 525                                      NULL);
 526       }
 527    }
 528
 529    /* free polygon stipple state */
 530    if (svga->polygon_stipple.sampler) {
 531       svga->pipe.delete_sampler_state(&svga->pipe, svga->polygon_stipple.sampler);
 532    }
 533
 534    if (svga->polygon_stipple.sampler_view) {
 535       svga->pipe.sampler_view_destroy(&svga->pipe,
 536                                       &svga->polygon_stipple.sampler_view->base);
 537    }
 538    pipe_resource_reference(&svga->polygon_stipple.texture, NULL);
 539 }
 540
 541 void
 542 svga_init_sampler_functions( struct svga_context *svga )
 543 {
 544    svga->pipe.create_sampler_state = svga_create_sampler_state;
 545    svga->pipe.bind_sampler_states = svga_bind_sampler_states;
 546    svga->pipe.delete_sampler_state = svga_delete_sampler_state;
 547    svga->pipe.set_sampler_views = svga_set_sampler_views;
 548    svga->pipe.create_sampler_view = svga_create_sampler_view;
 549    svga->pipe.sampler_view_destroy = svga_sampler_view_destroy;
 550 }