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_winsys.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     struct r300_query *q;
  39
  40     assert(query_type == PIPE_QUERY_OCCLUSION_COUNTER);
  41
  42     q = CALLOC_STRUCT(r300_query);
  43     if (!q)
  44         return NULL;
  45
  46     q->type = query_type;
  47     q->domain = R300_DOMAIN_GTT;
  48     q->buffer_size = 4096;
  49
  50     if (r300screen->caps.family == CHIP_FAMILY_RV530)
  51         q->num_pipes = r300screen->caps.num_z_pipes;
  52     else
  53         q->num_pipes = r300screen->caps.num_frag_pipes;
  54
  55     insert_at_tail(&r300->query_list, q);
  56
  57     /* Open up the occlusion query buffer. */
  58     q->buffer = r300->rws->buffer_create(r300->rws, 4096, 0, q->domain, q->buffer_size);
  59
  60     return (struct pipe_query*)q;
  61 }
  62
  63 static void r300_destroy_query(struct pipe_context* pipe,
  64                                struct pipe_query* query)
  65 {
  66     struct r300_context *r300 = r300_context(pipe);
  67     struct r300_query* q = r300_query(query);
  68
  69     r300->rws->buffer_reference(r300->rws, &q->buffer, NULL);
  70     remove_from_list(q);
  71     FREE(query);
  72 }
  73
  74 void r300_resume_query(struct r300_context *r300,
  75                        struct r300_query *query)
  76 {
  77     r300->query_current = query;
  78     r300->query_start.dirty = TRUE;
  79 }
  80
  81 static void r300_begin_query(struct pipe_context* pipe,
  82                              struct pipe_query* query)
  83 {
  84     struct r300_context* r300 = r300_context(pipe);
  85     struct r300_query* q = r300_query(query);
  86
  87     if (r300->query_current != NULL) {
  88         fprintf(stderr, "r300: begin_query: "
  89                 "Some other query has already been started.\n");
  90         assert(0);
  91         return;
  92     }
  93
  94     q->num_results = 0;
  95     r300_resume_query(r300, q);
  96 }
  97
  98 void r300_stop_query(struct r300_context *r300)
  99 {
 100     r300_emit_query_end(r300);
 101     r300->query_current = NULL;
 102 }
 103
 104 static void r300_end_query(struct pipe_context* pipe,
 105                            struct pipe_query* query)
 106 {
 107     struct r300_context* r300 = r300_context(pipe);
 108     struct r300_query *q = r300_query(query);
 109
 110     if (q != r300->query_current) {
 111         fprintf(stderr, "r300: end_query: Got invalid query.\n");
 112         assert(0);
 113         return;
 114     }
 115
 116     r300_stop_query(r300);
 117 }
 118
 119 static boolean r300_get_query_result(struct pipe_context* pipe,
 120                                      struct pipe_query* query,
 121                                      boolean wait,
 122                                      void* vresult)
 123 {
 124     struct r300_context* r300 = r300_context(pipe);
 125     struct r300_query *q = r300_query(query);
 126     unsigned flags, i;
 127     uint32_t temp, *map;
 128     uint64_t *result = (uint64_t*)vresult;
 129
 130     if (!q->flushed)
 131         pipe->flush(pipe, 0, NULL);
 132
 133     flags = PIPE_TRANSFER_READ | (!wait ? PIPE_TRANSFER_DONTBLOCK : 0);
 134
 135     map = r300->rws->buffer_map(r300->rws, q->buffer, flags);
 136     if (!map)
 137         return FALSE;
 138
 139     /* Sum up the results. */
 140     temp = 0;
 141     for (i = 0; i < q->num_results; i++) {
 142         temp += *map;
 143         map++;
 144     }
 145
 146     r300->rws->buffer_unmap(r300->rws, q->buffer);
 147
 148     *result = temp;
 149     return TRUE;
 150 }
 151
 152 static void r300_render_condition(struct pipe_context *pipe,
 153                                   struct pipe_query *query,
 154                                   uint mode)
 155 {
 156     struct r300_context *r300 = r300_context(pipe);
 157     uint64_t result;
 158     boolean wait;
 159
 160     if (query) {
 161         wait = mode == PIPE_RENDER_COND_WAIT ||
 162                mode == PIPE_RENDER_COND_BY_REGION_WAIT;
 163
 164         if (!r300_get_query_result(pipe, query, wait, &result)) {
 165             r300->skip_rendering = FALSE;
 166         }
 167
 168         r300->skip_rendering = result == 0;
 169     } else {
 170         r300->skip_rendering = FALSE;
 171     }
 172 }
 173
 174 void r300_init_query_functions(struct r300_context* r300) {
 175     r300->context.create_query = r300_create_query;
 176     r300->context.destroy_query = r300_destroy_query;
 177     r300->context.begin_query = r300_begin_query;
 178     r300->context.end_query = r300_end_query;
 179     r300->context.get_query_result = r300_get_query_result;
 180     r300->context.render_condition = r300_render_condition;
 181 }