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     q->cs_buffer = r300->rws->buffer_get_cs_handle(r300->rws, q->buffer);
  64
  65     return (struct pipe_query*)q;
  66 }
  67
  68 static void r300_destroy_query(struct pipe_context* pipe,
  69                                struct pipe_query* query)
  70 {
  71     struct r300_context *r300 = r300_context(pipe);
  72     struct r300_query* q = r300_query(query);
  73
  74     r300->rws->buffer_reference(r300->rws, &q->buffer, NULL);
  75     remove_from_list(q);
  76     FREE(query);
  77 }
  78
  79 void r300_resume_query(struct r300_context *r300,
  80                        struct r300_query *query)
  81 {
  82     r300->query_current = query;
  83     r300_mark_atom_dirty(r300, &r300->query_start);
  84 }
  85
  86 static void r300_begin_query(struct pipe_context* pipe,
  87                              struct pipe_query* query)
  88 {
  89     struct r300_context* r300 = r300_context(pipe);
  90     struct r300_query* q = r300_query(query);
  91
  92     if (r300->query_current != NULL) {
  93         fprintf(stderr, "r300: begin_query: "
  94                 "Some other query has already been started.\n");
  95         assert(0);
  96         return;
  97     }
  98
  99     q->num_results = 0;
 100     r300_resume_query(r300, q);
 101 }
 102
 103 void r300_stop_query(struct r300_context *r300)
 104 {
 105     r300_emit_query_end(r300);
 106     r300->query_current = NULL;
 107 }
 108
 109 static void r300_end_query(struct pipe_context* pipe,
 110                            struct pipe_query* query)
 111 {
 112     struct r300_context* r300 = r300_context(pipe);
 113     struct r300_query *q = r300_query(query);
 114
 115     if (q != r300->query_current) {
 116         fprintf(stderr, "r300: end_query: Got invalid query.\n");
 117         assert(0);
 118         return;
 119     }
 120
 121     r300_stop_query(r300);
 122 }
 123
 124 static boolean r300_get_query_result(struct pipe_context* pipe,
 125                                      struct pipe_query* query,
 126                                      boolean wait,
 127                                      void* vresult)
 128 {
 129     struct r300_context* r300 = r300_context(pipe);
 130     struct r300_query *q = r300_query(query);
 131     unsigned flags, i;
 132     uint32_t temp, *map;
 133     uint64_t *result = (uint64_t*)vresult;
 134
 135     if (!q->flushed)
 136         pipe->flush(pipe, 0, NULL);
 137
 138     flags = PIPE_TRANSFER_READ | (!wait ? PIPE_TRANSFER_DONTBLOCK : 0);
 139
 140     map = r300->rws->buffer_map(r300->rws, q->buffer, r300->cs, flags);
 141     if (!map)
 142         return FALSE;
 143
 144     /* Sum up the results. */
 145     temp = 0;
 146     for (i = 0; i < q->num_results; i++) {
 147         temp += *map;
 148         map++;
 149     }
 150
 151     r300->rws->buffer_unmap(r300->rws, q->buffer);
 152
 153     *result = temp;
 154     return TRUE;
 155 }
 156
 157 static void r300_render_condition(struct pipe_context *pipe,
 158                                   struct pipe_query *query,
 159                                   uint mode)
 160 {
 161     struct r300_context *r300 = r300_context(pipe);
 162     uint64_t result = 0;
 163     boolean wait;
 164
 165     if (query) {
 166         wait = mode == PIPE_RENDER_COND_WAIT ||
 167                mode == PIPE_RENDER_COND_BY_REGION_WAIT;
 168
 169         if (!r300_get_query_result(pipe, query, wait, &result)) {
 170             r300->skip_rendering = FALSE;
 171         } else {
 172             r300->skip_rendering = result == 0;
 173         }
 174     } else {
 175         r300->skip_rendering = FALSE;
 176     }
 177 }
 178
 179 /***************************************************************************
 180  * Fake occlusion queries (for debugging)
 181  ***************************************************************************/
 182
 183 static unsigned r300_fake_query;
 184
 185 static struct pipe_query *r300_fake_create_query(struct pipe_context *pipe,
 186                                                  unsigned query_type)
 187 {
 188     return (struct pipe_query*)&r300_fake_query;
 189 }
 190
 191 static void r300_fake_destroy_query(struct pipe_context* pipe,
 192                                     struct pipe_query* query)
 193 {
 194 }
 195
 196 static void r300_fake_begin_query(struct pipe_context* pipe,
 197                                   struct pipe_query* query)
 198 {
 199 }
 200
 201 static void r300_fake_end_query(struct pipe_context* pipe,
 202                                 struct pipe_query* query)
 203 {
 204 }
 205
 206 static boolean r300_fake_get_query_result(struct pipe_context* pipe,
 207                                           struct pipe_query* query,
 208                                           boolean wait, void* vresult)
 209 {
 210     uint64_t *result = (uint64_t*)vresult;
 211     *result = 1000000;
 212     return TRUE;
 213 }
 214
 215 static void r300_fake_render_condition(struct pipe_context *pipe,
 216                                        struct pipe_query *query, uint mode)
 217 {
 218 }
 219
 220 void r300_init_query_functions(struct r300_context* r300) {
 221     if (DBG_ON(r300, DBG_FAKE_OCC)) {
 222         r300->context.create_query = r300_fake_create_query;
 223         r300->context.destroy_query = r300_fake_destroy_query;
 224         r300->context.begin_query = r300_fake_begin_query;
 225         r300->context.end_query = r300_fake_end_query;
 226         r300->context.get_query_result = r300_fake_get_query_result;
 227         r300->context.render_condition = r300_fake_render_condition;
 228     } else {
 229         r300->context.create_query = r300_create_query;
 230         r300->context.destroy_query = r300_destroy_query;
 231         r300->context.begin_query = r300_begin_query;
 232         r300->context.end_query = r300_end_query;
 233         r300->context.get_query_result = r300_get_query_result;
 234         r300->context.render_condition = r300_render_condition;
 235     }
 236 }