src/gallium/drivers/r300/r300_query.c

   1 /*
   2  * Copyright 2009 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #include "util/u_memory.h"
  24 #include "util/u_simple_list.h"
  25
  26 #include "r300_context.h"
  27 #include "r300_screen.h"
  28 #include "r300_emit.h"
  29 #include "r300_query.h"
  30
  31 #include <stdio.h>
  32
  33 static struct pipe_query *r300_create_query(struct pipe_context *pipe,
  34                                             unsigned query_type)
  35 {
  36     struct r300_context *r300 = r300_context(pipe);
  37     struct r300_screen *r300screen = r300->screen;
  38     unsigned query_size;
  39     struct r300_query *q, *qptr;
  40
  41     q = CALLOC_STRUCT(r300_query);
  42
  43     q->type = query_type;
  44     assert(q->type == PIPE_QUERY_OCCLUSION_COUNTER);
  45
  46     q->active = FALSE;
  47
  48     if (r300screen->caps.family == CHIP_FAMILY_RV530)
  49         query_size = r300screen->caps.num_z_pipes * sizeof(uint32_t);
  50     else
  51         query_size = r300screen->caps.num_frag_pipes * sizeof(uint32_t);
  52
  53     if (!is_empty_list(&r300->query_list)) {
  54         qptr = last_elem(&r300->query_list);
  55         q->offset = qptr->offset + query_size;
  56     }
  57     insert_at_tail(&r300->query_list, q);
  58
  59     /* XXX */
  60     if (q->offset >= 4096) {
  61         q->offset = 0;
  62     }
  63
  64     return (struct pipe_query*)q;
  65 }
  66
  67 static void r300_destroy_query(struct pipe_context* pipe,
  68                                struct pipe_query* query)
  69 {
  70     struct r300_query* q = (struct r300_query*)query;
  71
  72     remove_from_list(q);
  73     FREE(query);
  74 }
  75
  76 static void r300_begin_query(struct pipe_context* pipe,
  77                              struct pipe_query* query)
  78 {
  79     uint32_t value = ~0U;
  80     struct r300_context* r300 = r300_context(pipe);
  81     struct r300_query* q = (struct r300_query*)query;
  82
  83     assert(r300->query_current == NULL);
  84
  85     pipe_buffer_write(pipe,
  86                       r300->oqbo,
  87                       q->offset,
  88                       sizeof value,
  89                       &value);
  90
  91     q->flushed = FALSE;
  92     r300->query_current = q;
  93     r300->query_start.dirty = TRUE;
  94 }
  95
  96 static void r300_end_query(struct pipe_context* pipe,
  97                            struct pipe_query* query)
  98 {
  99     struct r300_context* r300 = r300_context(pipe);
 100     struct r300_query* q = (struct r300_query*)query;
 101
 102     r300_emit_query_end(r300);
 103     q->begin_emitted = false;
 104     r300->query_current = NULL;
 105 }
 106
 107 static boolean r300_get_query_result(struct pipe_context* pipe,
 108                                      struct pipe_query* query,
 109                                      boolean wait,
 110                                      uint64_t* result)
 111 {
 112     struct r300_context* r300 = r300_context(pipe);
 113     struct r300_screen* r300screen = r300->screen;
 114     struct r300_query *q = (struct r300_query*)query;
 115     struct pipe_transfer *transfer;
 116     unsigned flags = PIPE_TRANSFER_READ;
 117     uint32_t* map;
 118     uint32_t temp = 0;
 119     unsigned i, num_results;
 120
 121     if (q->flushed == FALSE)
 122         pipe->flush(pipe, 0, NULL);
 123     if (!wait) {
 124         flags |= PIPE_TRANSFER_DONTBLOCK;
 125     }
 126
 127     map = pipe_buffer_map(pipe, r300->oqbo, flags, &transfer);
 128     if (!map)
 129         return FALSE;
 130     map += q->offset / 4;
 131
 132     if (r300screen->caps.family == CHIP_FAMILY_RV530)
 133         num_results = r300screen->caps.num_z_pipes;
 134     else
 135         num_results = r300screen->caps.num_frag_pipes;
 136
 137     for (i = 0; i < num_results; i++) {
 138         if (*map == ~0U) {
 139             /* Looks like our results aren't ready yet. */
 140             if (wait) {
 141                 fprintf(stderr, "r300: Despite waiting, OQ results haven't "
 142                                 "come in yet.\n");
 143             }
 144             temp = ~0U;
 145             break;
 146         }
 147         temp += *map;
 148         map++;
 149     }
 150     pipe_buffer_unmap(pipe, r300->oqbo, transfer);
 151
 152     if (temp == ~0U) {
 153         /* Our results haven't been written yet... */
 154         return FALSE;
 155     }
 156
 157     *result = temp;
 158     return TRUE;
 159 }
 160
 161 static void r300_render_condition(struct pipe_context *pipe,
 162                                   struct pipe_query *query,
 163                                   uint mode)
 164 {
 165     struct r300_context *r300 = r300_context(pipe);
 166     uint64_t result;
 167     boolean wait;
 168
 169     if (query) {
 170         wait = mode == PIPE_RENDER_COND_WAIT ||
 171                mode == PIPE_RENDER_COND_BY_REGION_WAIT;
 172
 173         if (!r300_get_query_result(pipe, query, wait, &result)) {
 174             r300->skip_rendering = FALSE;
 175         }
 176
 177         r300->skip_rendering = result == 0;
 178     } else {
 179         r300->skip_rendering = FALSE;
 180     }
 181 }
 182
 183 void r300_init_query_functions(struct r300_context* r300) {
 184     r300->context.create_query = r300_create_query;
 185     r300->context.destroy_query = r300_destroy_query;
 186     r300->context.begin_query = r300_begin_query;
 187     r300->context.end_query = r300_end_query;
 188     r300->context.get_query_result = r300_get_query_result;
 189     r300->context.render_condition = r300_render_condition;
 190 }