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_cs.h"
  29 #include "r300_emit.h"
  30 #include "r300_query.h"
  31 #include "r300_reg.h"
  32
  33 #include <stdio.h>
  34
  35 static struct pipe_query *r300_create_query(struct pipe_context *pipe,
  36                                             unsigned query_type)
  37 {
  38     struct r300_context *r300 = r300_context(pipe);
  39     struct r300_screen *r300screen = r300->screen;
  40     unsigned query_size;
  41     struct r300_query *q, *qptr;
  42
  43     q = CALLOC_STRUCT(r300_query);
  44
  45     q->type = query_type;
  46     assert(q->type == PIPE_QUERY_OCCLUSION_COUNTER);
  47
  48     q->active = FALSE;
  49
  50     if (r300screen->caps.family == CHIP_FAMILY_RV530)
  51         query_size = r300screen->caps.num_z_pipes * sizeof(uint32_t);
  52     else
  53         query_size = r300screen->caps.num_frag_pipes * sizeof(uint32_t);
  54
  55     if (!is_empty_list(&r300->query_list)) {
  56         qptr = last_elem(&r300->query_list);
  57         q->offset = qptr->offset + query_size;
  58     }
  59     insert_at_tail(&r300->query_list, q);
  60
  61     /* XXX */
  62     if (q->offset >= 4096) {
  63         q->offset = 0;
  64     }
  65
  66     return (struct pipe_query*)q;
  67 }
  68
  69 static void r300_destroy_query(struct pipe_context* pipe,
  70                                struct pipe_query* query)
  71 {
  72     struct r300_query* q = (struct r300_query*)query;
  73
  74     remove_from_list(q);
  75     FREE(query);
  76 }
  77
  78 static void r300_begin_query(struct pipe_context* pipe,
  79                              struct pipe_query* query)
  80 {
  81     uint32_t value = ~0U;
  82     struct r300_context* r300 = r300_context(pipe);
  83     struct r300_query* q = (struct r300_query*)query;
  84
  85     assert(r300->query_current == NULL);
  86
  87     pipe_buffer_write(pipe,
  88                       r300->oqbo,
  89                       q->offset,
  90                       sizeof value,
  91                       &value);
  92
  93     q->flushed = FALSE;
  94     r300->query_current = q;
  95     r300->dirty_state |= R300_NEW_QUERY;
  96 }
  97
  98 static void r300_end_query(struct pipe_context* pipe,
  99                            struct pipe_query* query)
 100 {
 101     struct r300_context* r300 = r300_context(pipe);
 102     struct r300_query* q = (struct r300_query*)query;
 103
 104     r300_emit_query_end(r300);
 105     q->begin_emitted = false;
 106     r300->query_current = NULL;
 107 }
 108
 109 static boolean r300_get_query_result(struct pipe_context* pipe,
 110                                      struct pipe_query* query,
 111                                      boolean wait,
 112                                      uint64_t* result)
 113 {
 114     struct r300_context* r300 = r300_context(pipe);
 115     struct r300_screen* r300screen = r300->screen;
 116     struct r300_query *q = (struct r300_query*)query;
 117     struct pipe_transfer *transfer;
 118     unsigned flags = PIPE_TRANSFER_READ;
 119     uint32_t* map;
 120     uint32_t temp = 0;
 121     unsigned i, num_results;
 122
 123     if (q->flushed == FALSE)
 124         pipe->flush(pipe, 0, NULL);
 125     if (!wait) {
 126         flags |= PIPE_TRANSFER_DONTBLOCK;
 127     }
 128
 129     map = pipe_buffer_map(pipe, r300->oqbo, flags, &transfer);
 130     if (!map)
 131         return FALSE;
 132     map += q->offset / 4;
 133
 134     if (r300screen->caps.family == CHIP_FAMILY_RV530)
 135         num_results = r300screen->caps.num_z_pipes;
 136     else
 137         num_results = r300screen->caps.num_frag_pipes;
 138
 139     for (i = 0; i < num_results; i++) {
 140         if (*map == ~0U) {
 141             /* Looks like our results aren't ready yet. */
 142             if (wait) {
 143                 fprintf(stderr, "r300: Despite waiting, OQ results haven't "
 144                                 "come in yet.\n");
 145             }
 146             temp = ~0U;
 147             break;
 148         }
 149         temp += *map;
 150         map++;
 151     }
 152     pipe_buffer_unmap(pipe, r300->oqbo, transfer);
 153
 154     if (temp == ~0U) {
 155         /* Our results haven't been written yet... */
 156         return FALSE;
 157     }
 158
 159     *result = temp;
 160     return TRUE;
 161 }
 162
 163 static void r300_render_condition(struct pipe_context *pipe,
 164                                   struct pipe_query *query,
 165                                   uint mode)
 166 {
 167     struct r300_context *r300 = r300_context(pipe);
 168     uint64_t result;
 169     boolean wait;
 170
 171     if (query) {
 172         wait = mode == PIPE_RENDER_COND_WAIT ||
 173                mode == PIPE_RENDER_COND_BY_REGION_WAIT;
 174
 175         if (!r300_get_query_result(pipe, query, wait, &result)) {
 176             r300->skip_rendering = FALSE;
 177         }
 178
 179         r300->skip_rendering = result == 0;
 180     } else {
 181         r300->skip_rendering = FALSE;
 182     }
 183 }
 184
 185 void r300_init_query_functions(struct r300_context* r300) {
 186     r300->context.create_query = r300_create_query;
 187     r300->context.destroy_query = r300_destroy_query;
 188     r300->context.begin_query = r300_begin_query;
 189     r300->context.end_query = r300_end_query;
 190     r300->context.get_query_result = r300_get_query_result;
 191     r300->context.render_condition = r300_render_condition;
 192 }