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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
  4.  * All Rights Reserved.
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the
  8.  * "Software"), to deal in the Software without restriction, including
  9.  * without limitation the rights to use, copy, modify, merge, publish,
  10.  * distribute, sub license, and/or sell copies of the Software, and to
  11.  * permit persons to whom the Software is furnished to do so, subject to
  12.  * the following conditions:
  13.  *
  14.  * The above copyright notice and this permission notice (including the
  15.  * next paragraph) shall be included in all copies or substantial portions
  16.  * of the Software.
  17.  *
  18.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21.  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25.  *
  26.  **************************************************************************/
  27.  
  28.  
  29. /**
  30.  * glBegin/EndQuery interface to pipe
  31.  *
  32.  * \author Brian Paul
  33.  */
  34.  
  35.  
  36. #include "main/imports.h"
  37. #include "main/context.h"
  38.  
  39. #include "pipe/p_context.h"
  40. #include "pipe/p_defines.h"
  41. #include "pipe/p_screen.h"
  42. #include "st_context.h"
  43. #include "st_cb_queryobj.h"
  44. #include "st_cb_bitmap.h"
  45.  
  46.  
  47. static struct gl_query_object *
  48. st_NewQueryObject(struct gl_context *ctx, GLuint id)
  49. {
  50.    struct st_query_object *stq = ST_CALLOC_STRUCT(st_query_object);
  51.    if (stq) {
  52.       stq->base.Id = id;
  53.       stq->base.Ready = GL_TRUE;
  54.       stq->pq = NULL;
  55.       stq->type = PIPE_QUERY_TYPES; /* an invalid value */
  56.       return &stq->base;
  57.    }
  58.    return NULL;
  59. }
  60.  
  61.  
  62.  
  63. static void
  64. st_DeleteQuery(struct gl_context *ctx, struct gl_query_object *q)
  65. {
  66.    struct pipe_context *pipe = st_context(ctx)->pipe;
  67.    struct st_query_object *stq = st_query_object(q);
  68.  
  69.    if (stq->pq) {
  70.       pipe->destroy_query(pipe, stq->pq);
  71.       stq->pq = NULL;
  72.    }
  73.  
  74.    if (stq->pq_begin) {
  75.       pipe->destroy_query(pipe, stq->pq_begin);
  76.       stq->pq_begin = NULL;
  77.    }
  78.  
  79.    free(stq);
  80. }
  81.  
  82.  
  83. static void
  84. st_BeginQuery(struct gl_context *ctx, struct gl_query_object *q)
  85. {
  86.    struct st_context *st = st_context(ctx);
  87.    struct pipe_context *pipe = st->pipe;
  88.    struct st_query_object *stq = st_query_object(q);
  89.    unsigned type;
  90.  
  91.    st_flush_bitmap_cache(st_context(ctx));
  92.  
  93.    /* convert GL query type to Gallium query type */
  94.    switch (q->Target) {
  95.    case GL_ANY_SAMPLES_PASSED:
  96.    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
  97.       /* fall-through */
  98.    case GL_SAMPLES_PASSED_ARB:
  99.       type = PIPE_QUERY_OCCLUSION_COUNTER;
  100.       break;
  101.    case GL_PRIMITIVES_GENERATED:
  102.       type = PIPE_QUERY_PRIMITIVES_GENERATED;
  103.       break;
  104.    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
  105.       type = PIPE_QUERY_PRIMITIVES_EMITTED;
  106.       break;
  107.    case GL_TIME_ELAPSED:
  108.       if (st->has_time_elapsed)
  109.          type = PIPE_QUERY_TIME_ELAPSED;
  110.       else
  111.          type = PIPE_QUERY_TIMESTAMP;
  112.       break;
  113.    default:
  114.       assert(0 && "unexpected query target in st_BeginQuery()");
  115.       return;
  116.    }
  117.  
  118.    if (stq->type != type) {
  119.       /* free old query of different type */
  120.       if (stq->pq) {
  121.          pipe->destroy_query(pipe, stq->pq);
  122.          stq->pq = NULL;
  123.       }
  124.       if (stq->pq_begin) {
  125.          pipe->destroy_query(pipe, stq->pq_begin);
  126.          stq->pq_begin = NULL;
  127.       }
  128.       stq->type = PIPE_QUERY_TYPES; /* an invalid value */
  129.    }
  130.  
  131.    if (q->Target == GL_TIME_ELAPSED &&
  132.        type == PIPE_QUERY_TIMESTAMP) {
  133.       /* Determine time elapsed by emitting two timestamp queries. */
  134.       if (!stq->pq_begin) {
  135.          stq->pq_begin = pipe->create_query(pipe, type);
  136.          stq->type = type;
  137.       }
  138.       pipe->end_query(pipe, stq->pq_begin);
  139.    } else {
  140.       if (!stq->pq) {
  141.          stq->pq = pipe->create_query(pipe, type);
  142.          stq->type = type;
  143.       }
  144.       pipe->begin_query(pipe, stq->pq);
  145.    }
  146.    assert(stq->type == type);
  147. }
  148.  
  149.  
  150. static void
  151. st_EndQuery(struct gl_context *ctx, struct gl_query_object *q)
  152. {
  153.    struct pipe_context *pipe = st_context(ctx)->pipe;
  154.    struct st_query_object *stq = st_query_object(q);
  155.  
  156.    st_flush_bitmap_cache(st_context(ctx));
  157.  
  158.    if ((q->Target == GL_TIMESTAMP ||
  159.         q->Target == GL_TIME_ELAPSED) &&
  160.        !stq->pq) {
  161.       stq->pq = pipe->create_query(pipe, PIPE_QUERY_TIMESTAMP);
  162.       stq->type = PIPE_QUERY_TIMESTAMP;
  163.    }
  164.  
  165.    pipe->end_query(pipe, stq->pq);
  166. }
  167.  
  168.  
  169. static boolean
  170. get_query_result(struct pipe_context *pipe,
  171.                  struct st_query_object *stq,
  172.                  boolean wait)
  173. {
  174.    if (!pipe->get_query_result(pipe,
  175.                                stq->pq,
  176.                                wait,
  177.                                (void *)&stq->base.Result)) {
  178.       return FALSE;
  179.    }
  180.  
  181.    if (stq->base.Target == GL_TIME_ELAPSED &&
  182.        stq->type == PIPE_QUERY_TIMESTAMP) {
  183.       /* Calculate the elapsed time from the two timestamp queries */
  184.       GLuint64EXT Result0 = 0;
  185.       assert(stq->pq_begin);
  186.       pipe->get_query_result(pipe, stq->pq_begin, TRUE, (void *)&Result0);
  187.       stq->base.Result -= Result0;
  188.    } else {
  189.       assert(!stq->pq_begin);
  190.    }
  191.  
  192.    return TRUE;
  193. }
  194.  
  195.  
  196. static void
  197. st_WaitQuery(struct gl_context *ctx, struct gl_query_object *q)
  198. {
  199.    struct pipe_context *pipe = st_context(ctx)->pipe;
  200.    struct st_query_object *stq = st_query_object(q);
  201.  
  202.    /* this function should only be called if we don't have a ready result */
  203.    assert(!stq->base.Ready);
  204.  
  205.    while (!stq->base.Ready &&
  206.           !get_query_result(pipe, stq, TRUE))
  207.    {
  208.       /* nothing */
  209.    }
  210.                            
  211.    q->Ready = GL_TRUE;
  212. }
  213.  
  214.  
  215. static void
  216. st_CheckQuery(struct gl_context *ctx, struct gl_query_object *q)
  217. {
  218.    struct pipe_context *pipe = st_context(ctx)->pipe;
  219.    struct st_query_object *stq = st_query_object(q);
  220.    assert(!q->Ready);   /* we should not get called if Ready is TRUE */
  221.    q->Ready = get_query_result(pipe, stq, FALSE);
  222. }
  223.  
  224.  
  225. static uint64_t
  226. st_GetTimestamp(struct gl_context *ctx)
  227. {
  228.    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
  229.  
  230.    return screen->get_timestamp(screen);
  231. }
  232.  
  233.  
  234. void st_init_query_functions(struct dd_function_table *functions)
  235. {
  236.    functions->NewQueryObject = st_NewQueryObject;
  237.    functions->DeleteQuery = st_DeleteQuery;
  238.    functions->BeginQuery = st_BeginQuery;
  239.    functions->EndQuery = st_EndQuery;
  240.    functions->WaitQuery = st_WaitQuery;
  241.    functions->CheckQuery = st_CheckQuery;
  242.    functions->GetTimestamp = st_GetTimestamp;
  243. }
  244.