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