src/gallium/drivers/llvmpipe/lp_query.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   4  * Copyright 2010 VMware, Inc.
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  13  * the following conditions:
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  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
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  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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  27  **************************************************************************/
  28
  29 /* Authors:
  30  *    Keith Whitwell, Qicheng Christopher Li, Brian Paul
  31  */
  32
  33 #include "draw/draw_context.h"
  34 #include "pipe/p_defines.h"
  35 #include "util/u_memory.h"
  36 #include "os/os_time.h"
  37 #include "lp_context.h"
  38 #include "lp_flush.h"
  39 #include "lp_fence.h"
  40 #include "lp_query.h"
  41 #include "lp_screen.h"
  42 #include "lp_state.h"
  43 #include "lp_rast.h"
  44
  45
  46 static struct llvmpipe_query *llvmpipe_query( struct pipe_query *p )
  47 {
  48    return (struct llvmpipe_query *)p;
  49 }
  50
  51 static struct pipe_query *
  52 llvmpipe_create_query(struct pipe_context *pipe,
  53                       unsigned type,
  54                       unsigned index)
  55 {
  56    struct llvmpipe_query *pq;
  57
  58    assert(type < PIPE_QUERY_TYPES);
  59
  60    pq = CALLOC_STRUCT( llvmpipe_query );
  61
  62    if (pq) {
  63       pq->type = type;
  64    }
  65
  66    return (struct pipe_query *) pq;
  67 }
  68
  69
  70 static void
  71 llvmpipe_destroy_query(struct pipe_context *pipe, struct pipe_query *q)
  72 {
  73    struct llvmpipe_query *pq = llvmpipe_query(q);
  74
  75    /* Ideally we would refcount queries & not get destroyed until the
  76     * last scene had finished with us.
  77     */
  78    if (pq->fence) {
  79       if (!lp_fence_issued(pq->fence))
  80          llvmpipe_flush(pipe, NULL, __FUNCTION__);
  81
  82       if (!lp_fence_signalled(pq->fence))
  83          lp_fence_wait(pq->fence);
  84
  85       lp_fence_reference(&pq->fence, NULL);
  86    }
  87
  88    FREE(pq);
  89 }
  90
  91
  92 static boolean
  93 llvmpipe_get_query_result(struct pipe_context *pipe,
  94                           struct pipe_query *q,
  95                           boolean wait,
  96                           union pipe_query_result *vresult)
  97 {
  98    struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
  99    unsigned num_threads = MAX2(1, screen->num_threads);
 100    struct llvmpipe_query *pq = llvmpipe_query(q);
 101    uint64_t *result = (uint64_t *)vresult;
 102    int i;
 103
 104    if (pq->fence) {
 105       /* only have a fence if there was a scene */
 106       if (!lp_fence_signalled(pq->fence)) {
 107          if (!lp_fence_issued(pq->fence))
 108             llvmpipe_flush(pipe, NULL, __FUNCTION__);
 109
 110          if (!wait)
 111             return FALSE;
 112
 113          lp_fence_wait(pq->fence);
 114       }
 115    }
 116
 117    /* Sum the results from each of the threads:
 118     */
 119    *result = 0;
 120
 121    switch (pq->type) {
 122    case PIPE_QUERY_OCCLUSION_COUNTER:
 123       for (i = 0; i < num_threads; i++) {
 124          *result += pq->end[i];
 125       }
 126       break;
 127    case PIPE_QUERY_OCCLUSION_PREDICATE:
 128       for (i = 0; i < num_threads; i++) {
 129          /* safer (still not guaranteed) when there's an overflow */
 130          vresult->b = vresult->b || pq->end[i];
 131       }
 132       break;
 133    case PIPE_QUERY_TIMESTAMP:
 134       for (i = 0; i < num_threads; i++) {
 135          if (pq->end[i] > *result) {
 136             *result = pq->end[i];
 137          }
 138       }
 139       break;
 140    case PIPE_QUERY_TIMESTAMP_DISJOINT: {
 141       struct pipe_query_data_timestamp_disjoint *td =
 142          (struct pipe_query_data_timestamp_disjoint *)vresult;
 143       /* os_get_time_nano return nanoseconds */
 144       td->frequency = UINT64_C(1000000000);
 145       td->disjoint = FALSE;
 146    }
 147       break;
 148    case PIPE_QUERY_GPU_FINISHED:
 149       vresult->b = TRUE;
 150       break;
 151    case PIPE_QUERY_PRIMITIVES_GENERATED:
 152       *result = pq->num_primitives_generated;
 153       break;
 154    case PIPE_QUERY_PRIMITIVES_EMITTED:
 155       *result = pq->num_primitives_written;
 156       break;
 157    case PIPE_QUERY_SO_OVERFLOW_PREDICATE:
 158       vresult->b = pq->num_primitives_generated > pq->num_primitives_written;
 159       break;
 160    case PIPE_QUERY_SO_STATISTICS: {
 161       struct pipe_query_data_so_statistics *stats =
 162          (struct pipe_query_data_so_statistics *)vresult;
 163       stats->num_primitives_written = pq->num_primitives_written;
 164       stats->primitives_storage_needed = pq->num_primitives_generated;
 165    }
 166       break;
 167    case PIPE_QUERY_PIPELINE_STATISTICS: {
 168       struct pipe_query_data_pipeline_statistics *stats =
 169          (struct pipe_query_data_pipeline_statistics *)vresult;
 170       /* only ps_invocations come from binned query */
 171       for (i = 0; i < num_threads; i++) {
 172          pq->stats.ps_invocations += pq->end[i];
 173       }
 174       pq->stats.ps_invocations *= LP_RASTER_BLOCK_SIZE * LP_RASTER_BLOCK_SIZE;
 175       *stats = pq->stats;
 176    }
 177       break;
 178    default:
 179       assert(0);
 180       break;
 181    }
 182
 183    return TRUE;
 184 }
 185
 186
 187 static boolean
 188 llvmpipe_begin_query(struct pipe_context *pipe, struct pipe_query *q)
 189 {
 190    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
 191    struct llvmpipe_query *pq = llvmpipe_query(q);
 192
 193    /* Check if the query is already in the scene.  If so, we need to
 194     * flush the scene now.  Real apps shouldn't re-use a query in a
 195     * frame of rendering.
 196     */
 197    if (pq->fence && !lp_fence_issued(pq->fence)) {
 198       llvmpipe_finish(pipe, __FUNCTION__);
 199    }
 200
 201
 202    memset(pq->start, 0, sizeof(pq->start));
 203    memset(pq->end, 0, sizeof(pq->end));
 204    lp_setup_begin_query(llvmpipe->setup, pq);
 205
 206    switch (pq->type) {
 207    case PIPE_QUERY_PRIMITIVES_EMITTED:
 208       pq->num_primitives_written = llvmpipe->so_stats.num_primitives_written;
 209       break;
 210    case PIPE_QUERY_PRIMITIVES_GENERATED:
 211       pq->num_primitives_generated = llvmpipe->so_stats.primitives_storage_needed;
 212       break;
 213    case PIPE_QUERY_SO_STATISTICS:
 214       pq->num_primitives_written = llvmpipe->so_stats.num_primitives_written;
 215       pq->num_primitives_generated = llvmpipe->so_stats.primitives_storage_needed;
 216       break;
 217    case PIPE_QUERY_SO_OVERFLOW_PREDICATE:
 218       pq->num_primitives_written = llvmpipe->so_stats.num_primitives_written;
 219       pq->num_primitives_generated = llvmpipe->so_stats.primitives_storage_needed;
 220       break;
 221    case PIPE_QUERY_PIPELINE_STATISTICS:
 222       /* reset our cache */
 223       if (llvmpipe->active_statistics_queries == 0) {
 224          memset(&llvmpipe->pipeline_statistics, 0,
 225                 sizeof(llvmpipe->pipeline_statistics));
 226       }
 227       memcpy(&pq->stats, &llvmpipe->pipeline_statistics, sizeof(pq->stats));
 228       llvmpipe->active_statistics_queries++;
 229       break;
 230    case PIPE_QUERY_OCCLUSION_COUNTER:
 231    case PIPE_QUERY_OCCLUSION_PREDICATE:
 232       llvmpipe->active_occlusion_queries++;
 233       llvmpipe->dirty |= LP_NEW_OCCLUSION_QUERY;
 234       break;
 235    default:
 236       break;
 237    }
 238    return true;
 239 }
 240
 241
 242 static bool
 243 llvmpipe_end_query(struct pipe_context *pipe, struct pipe_query *q)
 244 {
 245    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
 246    struct llvmpipe_query *pq = llvmpipe_query(q);
 247
 248    lp_setup_end_query(llvmpipe->setup, pq);
 249
 250    switch (pq->type) {
 251
 252    case PIPE_QUERY_PRIMITIVES_EMITTED:
 253       pq->num_primitives_written =
 254          llvmpipe->so_stats.num_primitives_written - pq->num_primitives_written;
 255       break;
 256    case PIPE_QUERY_PRIMITIVES_GENERATED:
 257       pq->num_primitives_generated =
 258          llvmpipe->so_stats.primitives_storage_needed - pq->num_primitives_generated;
 259       break;
 260    case PIPE_QUERY_SO_STATISTICS:
 261       pq->num_primitives_written =
 262          llvmpipe->so_stats.num_primitives_written - pq->num_primitives_written;
 263       pq->num_primitives_generated =
 264          llvmpipe->so_stats.primitives_storage_needed - pq->num_primitives_generated;
 265       break;
 266    case PIPE_QUERY_SO_OVERFLOW_PREDICATE:
 267       pq->num_primitives_written =
 268          llvmpipe->so_stats.num_primitives_written - pq->num_primitives_written;
 269       pq->num_primitives_generated =
 270          llvmpipe->so_stats.primitives_storage_needed - pq->num_primitives_generated;
 271       break;
 272    case PIPE_QUERY_PIPELINE_STATISTICS:
 273       pq->stats.ia_vertices =
 274          llvmpipe->pipeline_statistics.ia_vertices - pq->stats.ia_vertices;
 275       pq->stats.ia_primitives =
 276          llvmpipe->pipeline_statistics.ia_primitives - pq->stats.ia_primitives;
 277       pq->stats.vs_invocations =
 278          llvmpipe->pipeline_statistics.vs_invocations - pq->stats.vs_invocations;
 279       pq->stats.gs_invocations =
 280          llvmpipe->pipeline_statistics.gs_invocations - pq->stats.gs_invocations;
 281       pq->stats.gs_primitives =
 282          llvmpipe->pipeline_statistics.gs_primitives - pq->stats.gs_primitives;
 283       pq->stats.c_invocations =
 284          llvmpipe->pipeline_statistics.c_invocations - pq->stats.c_invocations;
 285       pq->stats.c_primitives =
 286          llvmpipe->pipeline_statistics.c_primitives - pq->stats.c_primitives;
 287       pq->stats.ps_invocations =
 288          llvmpipe->pipeline_statistics.ps_invocations - pq->stats.ps_invocations;
 289
 290       llvmpipe->active_statistics_queries--;
 291       break;
 292    case PIPE_QUERY_OCCLUSION_COUNTER:
 293    case PIPE_QUERY_OCCLUSION_PREDICATE:
 294       assert(llvmpipe->active_occlusion_queries);
 295       llvmpipe->active_occlusion_queries--;
 296       llvmpipe->dirty |= LP_NEW_OCCLUSION_QUERY;
 297       break;
 298    default:
 299       break;
 300    }
 301
 302    return true;
 303 }
 304
 305 boolean
 306 llvmpipe_check_render_cond(struct llvmpipe_context *lp)
 307 {
 308    struct pipe_context *pipe = &lp->pipe;
 309    boolean b, wait;
 310    uint64_t result;
 311
 312    if (!lp->render_cond_query)
 313       return TRUE; /* no query predicate, draw normally */
 314
 315    wait = (lp->render_cond_mode == PIPE_RENDER_COND_WAIT ||
 316            lp->render_cond_mode == PIPE_RENDER_COND_BY_REGION_WAIT);
 317
 318    b = pipe->get_query_result(pipe, lp->render_cond_query, wait, (void*)&result);
 319    if (b)
 320       return ((!result) == lp->render_cond_cond);
 321    else
 322       return TRUE;
 323 }
 324
 325 static void
 326 llvmpipe_set_active_query_state(struct pipe_context *pipe, boolean enable)
 327 {
 328 }
 329
 330 void llvmpipe_init_query_funcs(struct llvmpipe_context *llvmpipe )
 331 {
 332    llvmpipe->pipe.create_query = llvmpipe_create_query;
 333    llvmpipe->pipe.destroy_query = llvmpipe_destroy_query;
 334    llvmpipe->pipe.begin_query = llvmpipe_begin_query;
 335    llvmpipe->pipe.end_query = llvmpipe_end_query;
 336    llvmpipe->pipe.get_query_result = llvmpipe_get_query_result;
 337    llvmpipe->pipe.set_active_query_state = llvmpipe_set_active_query_state;
 338 }
 339
 340