src/mesa/state_tracker/st_cb_queryobj.c

   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 #include "main/mfeatures.h"
  39
  40 #include "pipe/p_context.h"
  41 #include "pipe/p_defines.h"
  42 #include "pipe/p_screen.h"
  43 #include "st_context.h"
  44 #include "st_cb_queryobj.h"
  45 #include "st_cb_bitmap.h"
  46
  47
  48 static struct gl_query_object *
  49 st_NewQueryObject(struct gl_context *ctx, GLuint id)
  50 {
  51    struct st_query_object *stq = ST_CALLOC_STRUCT(st_query_object);
  52    if (stq) {
  53       stq->base.Id = id;
  54       stq->base.Ready = GL_TRUE;
  55       stq->pq = NULL;
  56       stq->type = PIPE_QUERY_TYPES; /* an invalid value */
  57       return &stq->base;
  58    }
  59    return NULL;
  60 }
  61
  62
  63
  64 static void
  65 st_DeleteQuery(struct gl_context *ctx, struct gl_query_object *q)
  66 {
  67    struct pipe_context *pipe = st_context(ctx)->pipe;
  68    struct st_query_object *stq = st_query_object(q);
  69
  70    if (stq->pq) {
  71       pipe->destroy_query(pipe, stq->pq);
  72       stq->pq = NULL;
  73    }
  74
  75    if (stq->pq_begin) {
  76       pipe->destroy_query(pipe, stq->pq_begin);
  77       stq->pq_begin = NULL;
  78    }
  79
  80    free(stq);
  81 }
  82
  83
  84 static void
  85 st_BeginQuery(struct gl_context *ctx, struct gl_query_object *q)
  86 {
  87    struct st_context *st = st_context(ctx);
  88    struct pipe_context *pipe = st->pipe;
  89    struct st_query_object *stq = st_query_object(q);
  90    unsigned type;
  91
  92    st_flush_bitmap_cache(st_context(ctx));
  93
  94    /* convert GL query type to Gallium query type */
  95    switch (q->Target) {
  96    case GL_ANY_SAMPLES_PASSED:
  97    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
  98       /* fall-through */
  99    case GL_SAMPLES_PASSED_ARB:
 100       type = PIPE_QUERY_OCCLUSION_COUNTER;
 101       break;
 102    case GL_PRIMITIVES_GENERATED:
 103       type = PIPE_QUERY_PRIMITIVES_GENERATED;
 104       break;
 105    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 106       type = PIPE_QUERY_PRIMITIVES_EMITTED;
 107       break;
 108    case GL_TIME_ELAPSED:
 109       if (st->has_time_elapsed)
 110          type = PIPE_QUERY_TIME_ELAPSED;
 111       else
 112          type = PIPE_QUERY_TIMESTAMP;
 113       break;
 114    default:
 115       assert(0 && "unexpected query target in st_BeginQuery()");
 116       return;
 117    }
 118
 119    if (stq->type != type) {
 120       /* free old query of different type */
 121       if (stq->pq) {
 122          pipe->destroy_query(pipe, stq->pq);
 123          stq->pq = NULL;
 124       }
 125       if (stq->pq_begin) {
 126          pipe->destroy_query(pipe, stq->pq_begin);
 127          stq->pq_begin = NULL;
 128       }
 129       stq->type = PIPE_QUERY_TYPES; /* an invalid value */
 130    }
 131
 132    if (q->Target == GL_TIME_ELAPSED &&
 133        type == PIPE_QUERY_TIMESTAMP) {
 134       /* Determine time elapsed by emitting two timestamp queries. */
 135       if (!stq->pq_begin) {
 136          stq->pq_begin = pipe->create_query(pipe, type);
 137          stq->type = type;
 138       }
 139       pipe->end_query(pipe, stq->pq_begin);
 140    } else {
 141       if (!stq->pq) {
 142          stq->pq = pipe->create_query(pipe, type);
 143          stq->type = type;
 144       }
 145       pipe->begin_query(pipe, stq->pq);
 146    }
 147    assert(stq->type == type);
 148 }
 149
 150
 151 static void
 152 st_EndQuery(struct gl_context *ctx, struct gl_query_object *q)
 153 {
 154    struct pipe_context *pipe = st_context(ctx)->pipe;
 155    struct st_query_object *stq = st_query_object(q);
 156
 157    st_flush_bitmap_cache(st_context(ctx));
 158
 159    if ((q->Target == GL_TIMESTAMP ||
 160         q->Target == GL_TIME_ELAPSED) &&
 161        !stq->pq) {
 162       stq->pq = pipe->create_query(pipe, PIPE_QUERY_TIMESTAMP);
 163       stq->type = PIPE_QUERY_TIMESTAMP;
 164    }
 165
 166    pipe->end_query(pipe, stq->pq);
 167 }
 168
 169
 170 static boolean
 171 get_query_result(struct pipe_context *pipe,
 172                  struct st_query_object *stq,
 173                  boolean wait)
 174 {
 175    if (!pipe->get_query_result(pipe,
 176                                stq->pq,
 177                                wait,
 178                                (void *)&stq->base.Result)) {
 179       return FALSE;
 180    }
 181
 182    if (stq->base.Target == GL_TIME_ELAPSED &&
 183        stq->type == PIPE_QUERY_TIMESTAMP) {
 184       /* Calculate the elapsed time from the two timestamp queries */
 185       GLuint64EXT Result0 = 0;
 186       assert(stq->pq_begin);
 187       pipe->get_query_result(pipe, stq->pq_begin, TRUE, (void *)&Result0);
 188       stq->base.Result -= Result0;
 189    } else {
 190       assert(!stq->pq_begin);
 191    }
 192
 193    return TRUE;
 194 }
 195
 196
 197 static void
 198 st_WaitQuery(struct gl_context *ctx, struct gl_query_object *q)
 199 {
 200    struct pipe_context *pipe = st_context(ctx)->pipe;
 201    struct st_query_object *stq = st_query_object(q);
 202
 203    /* this function should only be called if we don't have a ready result */
 204    assert(!stq->base.Ready);
 205
 206    while (!stq->base.Ready &&
 207           !get_query_result(pipe, stq, TRUE))
 208    {
 209       /* nothing */
 210    }
 211
 212    q->Ready = GL_TRUE;
 213 }
 214
 215
 216 static void
 217 st_CheckQuery(struct gl_context *ctx, struct gl_query_object *q)
 218 {
 219    struct pipe_context *pipe = st_context(ctx)->pipe;
 220    struct st_query_object *stq = st_query_object(q);
 221    assert(!q->Ready);   /* we should not get called if Ready is TRUE */
 222    q->Ready = get_query_result(pipe, stq, FALSE);
 223 }
 224
 225
 226 static uint64_t
 227 st_GetTimestamp(struct gl_context *ctx)
 228 {
 229    struct pipe_screen *screen = st_context(ctx)->pipe->screen;
 230
 231    return screen->get_timestamp(screen);
 232 }
 233
 234
 235 void st_init_query_functions(struct dd_function_table *functions)
 236 {
 237    functions->NewQueryObject = st_NewQueryObject;
 238    functions->DeleteQuery = st_DeleteQuery;
 239    functions->BeginQuery = st_BeginQuery;
 240    functions->EndQuery = st_EndQuery;
 241    functions->WaitQuery = st_WaitQuery;
 242    functions->CheckQuery = st_CheckQuery;
 243    functions->GetTimestamp = st_GetTimestamp;
 244 }