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/simple_list.h"
  25
  26 #include "r300_context.h"
  27 #include "r300_screen.h"
  28 #include "r300_emit.h"
  29
  30 #include <stdio.h>
  31
  32 static struct pipe_query *r300_create_query(struct pipe_context *pipe,
  33                                             unsigned query_type,
  34                                             unsigned index)
  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         query_type != PIPE_QUERY_OCCLUSION_PREDICATE &&
  42         query_type != PIPE_QUERY_OCCLUSION_PREDICATE_CONSERVATIVE &&
  43         query_type != PIPE_QUERY_GPU_FINISHED) {
  44         return NULL;
  45     }
  46
  47     q = CALLOC_STRUCT(r300_query);
  48     if (!q)
  49         return NULL;
  50
  51     q->type = query_type;
  52
  53     if (query_type == PIPE_QUERY_GPU_FINISHED) {
  54         return (struct pipe_query*)q;
  55     }
  56
  57     if (r300screen->caps.family == CHIP_RV530)
  58         q->num_pipes = r300screen->info.r300_num_z_pipes;
  59     else
  60         q->num_pipes = r300screen->info.r300_num_gb_pipes;
  61
  62     q->buf = r300->rws->buffer_create(r300->rws,
  63                                       r300screen->info.gart_page_size,
  64                                       r300screen->info.gart_page_size,
  65                                       RADEON_DOMAIN_GTT,
  66                                       RADEON_FLAG_NO_INTERPROCESS_SHARING);
  67     if (!q->buf) {
  68         FREE(q);
  69         return NULL;
  70     }
  71     return (struct pipe_query*)q;
  72 }
  73
  74 static void r300_destroy_query(struct pipe_context* pipe,
  75                                struct pipe_query* query)
  76 {
  77     struct r300_query* q = r300_query(query);
  78
  79     pb_reference(&q->buf, NULL);
  80     FREE(query);
  81 }
  82
  83 void r300_resume_query(struct r300_context *r300,
  84                        struct r300_query *query)
  85 {
  86     r300->query_current = query;
  87     r300_mark_atom_dirty(r300, &r300->query_start);
  88 }
  89
  90 static bool r300_begin_query(struct pipe_context* pipe,
  91                              struct pipe_query* query)
  92 {
  93     struct r300_context* r300 = r300_context(pipe);
  94     struct r300_query* q = r300_query(query);
  95
  96     if (q->type == PIPE_QUERY_GPU_FINISHED)
  97         return true;
  98
  99     if (r300->query_current != NULL) {
 100         fprintf(stderr, "r300: begin_query: "
 101                 "Some other query has already been started.\n");
 102         assert(0);
 103         return false;
 104     }
 105
 106     q->num_results = 0;
 107     r300_resume_query(r300, q);
 108     return true;
 109 }
 110
 111 void r300_stop_query(struct r300_context *r300)
 112 {
 113     r300_emit_query_end(r300);
 114     r300->query_current = NULL;
 115 }
 116
 117 static bool r300_end_query(struct pipe_context* pipe,
 118                            struct pipe_query* query)
 119 {
 120     struct r300_context* r300 = r300_context(pipe);
 121     struct r300_query *q = r300_query(query);
 122
 123     if (q->type == PIPE_QUERY_GPU_FINISHED) {
 124         pb_reference(&q->buf, NULL);
 125         r300_flush(pipe, PIPE_FLUSH_ASYNC,
 126                    (struct pipe_fence_handle**)&q->buf);
 127         return true;
 128     }
 129
 130     if (q != r300->query_current) {
 131         fprintf(stderr, "r300: end_query: Got invalid query.\n");
 132         assert(0);
 133         return false;
 134     }
 135
 136     r300_stop_query(r300);
 137
 138     return true;
 139 }
 140
 141 static bool r300_get_query_result(struct pipe_context* pipe,
 142                                   struct pipe_query* query,
 143                                   bool wait,
 144                                   union pipe_query_result *vresult)
 145 {
 146     struct r300_context* r300 = r300_context(pipe);
 147     struct r300_query *q = r300_query(query);
 148     unsigned i;
 149     uint32_t temp, *map;
 150
 151     if (q->type == PIPE_QUERY_GPU_FINISHED) {
 152         if (wait) {
 153             r300->rws->buffer_wait(q->buf, PIPE_TIMEOUT_INFINITE,
 154                                    RADEON_USAGE_READWRITE);
 155             vresult->b = TRUE;
 156         } else {
 157             vresult->b = r300->rws->buffer_wait(q->buf, 0, RADEON_USAGE_READWRITE);
 158         }
 159         return vresult->b;
 160     }
 161
 162     map = r300->rws->buffer_map(q->buf, r300->cs,
 163                                 PIPE_TRANSFER_READ |
 164                                 (!wait ? PIPE_TRANSFER_DONTBLOCK : 0));
 165     if (!map)
 166         return FALSE;
 167
 168     /* Sum up the results. */
 169     temp = 0;
 170     for (i = 0; i < q->num_results; i++) {
 171         /* Convert little endian values written by GPU to CPU byte order */
 172         temp += util_le32_to_cpu(*map);
 173         map++;
 174     }
 175
 176     if (q->type == PIPE_QUERY_OCCLUSION_PREDICATE ||
 177         q->type == PIPE_QUERY_OCCLUSION_PREDICATE_CONSERVATIVE) {
 178         vresult->b = temp != 0;
 179     } else {
 180         vresult->u64 = temp;
 181     }
 182     return TRUE;
 183 }
 184
 185 static void r300_render_condition(struct pipe_context *pipe,
 186                                   struct pipe_query *query,
 187                                   bool condition,
 188                                   enum pipe_render_cond_flag mode)
 189 {
 190     struct r300_context *r300 = r300_context(pipe);
 191     union pipe_query_result result;
 192     bool wait;
 193
 194     r300->skip_rendering = FALSE;
 195
 196     if (query) {
 197         wait = mode == PIPE_RENDER_COND_WAIT ||
 198                mode == PIPE_RENDER_COND_BY_REGION_WAIT;
 199
 200         if (r300_get_query_result(pipe, query, wait, &result)) {
 201             if (r300_query(query)->type == PIPE_QUERY_OCCLUSION_PREDICATE ||
 202                 r300_query(query)->type == PIPE_QUERY_OCCLUSION_PREDICATE_CONSERVATIVE) {
 203                 r300->skip_rendering = condition == result.b;
 204             } else {
 205                 r300->skip_rendering = condition == !!result.u64;
 206             }
 207         }
 208     }
 209 }
 210
 211 static void
 212 r300_set_active_query_state(struct pipe_context *pipe, bool enable)
 213 {
 214 }
 215
 216 void r300_init_query_functions(struct r300_context* r300)
 217 {
 218     r300->context.create_query = r300_create_query;
 219     r300->context.destroy_query = r300_destroy_query;
 220     r300->context.begin_query = r300_begin_query;
 221     r300->context.end_query = r300_end_query;
 222     r300->context.get_query_result = r300_get_query_result;
 223     r300->context.set_active_query_state = r300_set_active_query_state;
 224     r300->context.render_condition = r300_render_condition;
 225 }