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     if (query_type != PIPE_QUERY_OCCLUSION_COUNTER) {
  41         return NULL;
  42     }
  43
  44     q = CALLOC_STRUCT(r300_query);
  45     if (!q)
  46         return NULL;
  47
  48     q->type = query_type;
  49     q->domain = R300_DOMAIN_GTT;
  50     q->buffer_size = 4096;
  51
  52     if (r300screen->caps.family == CHIP_FAMILY_RV530)
  53         q->num_pipes = r300screen->caps.num_z_pipes;
  54     else
  55         q->num_pipes = r300screen->caps.num_frag_pipes;
  56
  57     insert_at_tail(&r300->query_list, q);
  58
  59     /* Open up the occlusion query buffer. */
  60     q->buffer = r300->rws->buffer_create(r300->rws, q->buffer_size, 4096,
  61                                          PIPE_BIND_CUSTOM, PIPE_USAGE_STREAM,
  62                                          q->domain);
  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_context *r300 = r300_context(pipe);
  71     struct r300_query* q = r300_query(query);
  72
  73     r300->rws->buffer_reference(r300->rws, &q->buffer, NULL);
  74     remove_from_list(q);
  75     FREE(query);
  76 }
  77
  78 void r300_resume_query(struct r300_context *r300,
  79                        struct r300_query *query)
  80 {
  81     r300->query_current = query;
  82     r300->query_start.dirty = TRUE;
  83 }
  84
  85 static void r300_begin_query(struct pipe_context* pipe,
  86                              struct pipe_query* query)
  87 {
  88     struct r300_context* r300 = r300_context(pipe);
  89     struct r300_query* q = r300_query(query);
  90
  91     if (r300->query_current != NULL) {
  92         fprintf(stderr, "r300: begin_query: "
  93                 "Some other query has already been started.\n");
  94         assert(0);
  95         return;
  96     }
  97
  98     q->num_results = 0;
  99     r300_resume_query(r300, q);
 100 }
 101
 102 void r300_stop_query(struct r300_context *r300)
 103 {
 104     r300_emit_query_end(r300);
 105     r300->query_current = NULL;
 106 }
 107
 108 static void r300_end_query(struct pipe_context* pipe,
 109                            struct pipe_query* query)
 110 {
 111     struct r300_context* r300 = r300_context(pipe);
 112     struct r300_query *q = r300_query(query);
 113
 114     if (q != r300->query_current) {
 115         fprintf(stderr, "r300: end_query: Got invalid query.\n");
 116         assert(0);
 117         return;
 118     }
 119
 120     r300_stop_query(r300);
 121 }
 122
 123 static boolean r300_get_query_result(struct pipe_context* pipe,
 124                                      struct pipe_query* query,
 125                                      boolean wait,
 126                                      void* vresult)
 127 {
 128     struct r300_context* r300 = r300_context(pipe);
 129     struct r300_query *q = r300_query(query);
 130     unsigned flags, i;
 131     uint32_t temp, *map;
 132     uint64_t *result = (uint64_t*)vresult;
 133
 134     if (!q->flushed)
 135         pipe->flush(pipe, 0, NULL);
 136
 137     flags = PIPE_TRANSFER_READ | (!wait ? PIPE_TRANSFER_DONTBLOCK : 0);
 138
 139     map = r300->rws->buffer_map(r300->rws, q->buffer, r300->cs, flags);
 140     if (!map)
 141         return FALSE;
 142
 143     /* Sum up the results. */
 144     temp = 0;
 145     for (i = 0; i < q->num_results; i++) {
 146         temp += *map;
 147         map++;
 148     }
 149
 150     r300->rws->buffer_unmap(r300->rws, q->buffer);
 151
 152     *result = temp;
 153     return TRUE;
 154 }
 155
 156 static void r300_render_condition(struct pipe_context *pipe,
 157                                   struct pipe_query *query,
 158                                   uint mode)
 159 {
 160     struct r300_context *r300 = r300_context(pipe);
 161     uint64_t result = 0;
 162     boolean wait;
 163
 164     if (query) {
 165         wait = mode == PIPE_RENDER_COND_WAIT ||
 166                mode == PIPE_RENDER_COND_BY_REGION_WAIT;
 167
 168         if (!r300_get_query_result(pipe, query, wait, &result)) {
 169             r300->skip_rendering = FALSE;
 170         } else {
 171             r300->skip_rendering = result == 0;
 172         }
 173     } else {
 174         r300->skip_rendering = FALSE;
 175     }
 176 }
 177
 178 /***************************************************************************
 179  * Fake occlusion queries (for debugging)
 180  ***************************************************************************/
 181
 182 static unsigned r300_fake_query;
 183
 184 static struct pipe_query *r300_fake_create_query(struct pipe_context *pipe,
 185                                                  unsigned query_type)
 186 {
 187     return (struct pipe_query*)&r300_fake_query;
 188 }
 189
 190 static void r300_fake_destroy_query(struct pipe_context* pipe,
 191                                     struct pipe_query* query)
 192 {
 193 }
 194
 195 static void r300_fake_begin_query(struct pipe_context* pipe,
 196                                   struct pipe_query* query)
 197 {
 198 }
 199
 200 static void r300_fake_end_query(struct pipe_context* pipe,
 201                                 struct pipe_query* query)
 202 {
 203 }
 204
 205 static boolean r300_fake_get_query_result(struct pipe_context* pipe,
 206                                           struct pipe_query* query,
 207                                           boolean wait, void* vresult)
 208 {
 209     uint64_t *result = (uint64_t*)vresult;
 210     *result = 1000000;
 211     return TRUE;
 212 }
 213
 214 static void r300_fake_render_condition(struct pipe_context *pipe,
 215                                        struct pipe_query *query, uint mode)
 216 {
 217 }
 218
 219 void r300_init_query_functions(struct r300_context* r300) {
 220     if (DBG_ON(r300, DBG_FAKE_OCC)) {
 221         r300->context.create_query = r300_fake_create_query;
 222         r300->context.destroy_query = r300_fake_destroy_query;
 223         r300->context.begin_query = r300_fake_begin_query;
 224         r300->context.end_query = r300_fake_end_query;
 225         r300->context.get_query_result = r300_fake_get_query_result;
 226         r300->context.render_condition = r300_fake_render_condition;
 227     } else {
 228         r300->context.create_query = r300_create_query;
 229         r300->context.destroy_query = r300_destroy_query;
 230         r300->context.begin_query = r300_begin_query;
 231         r300->context.end_query = r300_end_query;
 232         r300->context.get_query_result = r300_get_query_result;
 233         r300->context.render_condition = r300_render_condition;
 234     }
 235 }