src/mesa/state_tracker/st_cb_queryobj.c

   1 /**************************************************************************
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   3  * Copyright 2007 VMware, Inc.
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  11  * permit persons to whom the Software is furnished to do so, subject to
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  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
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  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 }