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
  30 #include <stdio.h>
  31
  32 static struct pipe_query *r300_create_query(struct pipe_context *pipe,
  33                                             unsigned query_type)
  34 {
  35     struct r300_context *r300 = r300_context(pipe);
  36     struct r300_screen *r300screen = r300->screen;
  37     struct r300_query *q;
  38
  39     if (query_type != PIPE_QUERY_OCCLUSION_COUNTER) {
  40         return NULL;
  41     }
  42
  43     q = CALLOC_STRUCT(r300_query);
  44     if (!q)
  45         return NULL;
  46
  47     q->type = query_type;
  48     q->buffer_size = 4096;
  49
  50     if (r300screen->caps.family == CHIP_FAMILY_RV530)
  51         q->num_pipes = r300screen->info.r300_num_z_pipes;
  52     else
  53         q->num_pipes = r300screen->info.r300_num_gb_pipes;
  54
  55     insert_at_tail(&r300->query_list, q);
  56
  57     /* Open up the occlusion query buffer. */
  58     q->buf = r300->rws->buffer_create(r300->rws, q->buffer_size, 4096,
  59                                          PIPE_BIND_CUSTOM, PIPE_USAGE_STAGING);
  60     q->cs_buf = r300->rws->buffer_get_cs_handle(q->buf);
  61
  62     return (struct pipe_query*)q;
  63 }
  64
  65 static void r300_destroy_query(struct pipe_context* pipe,
  66                                struct pipe_query* query)
  67 {
  68     struct r300_query* q = r300_query(query);
  69
  70     pb_reference(&q->buf, NULL);
  71     remove_from_list(q);
  72     FREE(query);
  73 }
  74
  75 void r300_resume_query(struct r300_context *r300,
  76                        struct r300_query *query)
  77 {
  78     r300->query_current = query;
  79     r300_mark_atom_dirty(r300, &r300->query_start);
  80 }
  81
  82 static void r300_begin_query(struct pipe_context* pipe,
  83                              struct pipe_query* query)
  84 {
  85     struct r300_context* r300 = r300_context(pipe);
  86     struct r300_query* q = r300_query(query);
  87
  88     if (r300->query_current != NULL) {
  89         fprintf(stderr, "r300: begin_query: "
  90                 "Some other query has already been started.\n");
  91         assert(0);
  92         return;
  93     }
  94
  95     q->num_results = 0;
  96     r300_resume_query(r300, q);
  97 }
  98
  99 void r300_stop_query(struct r300_context *r300)
 100 {
 101     r300_emit_query_end(r300);
 102     r300->query_current = NULL;
 103 }
 104
 105 static void r300_end_query(struct pipe_context* pipe,
 106                            struct pipe_query* query)
 107 {
 108     struct r300_context* r300 = r300_context(pipe);
 109     struct r300_query *q = r300_query(query);
 110
 111     if (q != r300->query_current) {
 112         fprintf(stderr, "r300: end_query: Got invalid query.\n");
 113         assert(0);
 114         return;
 115     }
 116
 117     r300_stop_query(r300);
 118 }
 119
 120 static boolean r300_get_query_result(struct pipe_context* pipe,
 121                                      struct pipe_query* query,
 122                                      boolean wait,
 123                                      void* vresult)
 124 {
 125     struct r300_context* r300 = r300_context(pipe);
 126     struct r300_query *q = r300_query(query);
 127     unsigned i;
 128     uint32_t temp, *map;
 129
 130     map = r300->rws->buffer_map(q->buf, r300->cs,
 131                                 PIPE_TRANSFER_READ |
 132                                 (!wait ? PIPE_TRANSFER_DONTBLOCK : 0));
 133     if (!map)
 134         return FALSE;
 135
 136     /* Sum up the results. */
 137     temp = 0;
 138     for (i = 0; i < q->num_results; i++) {
 139         temp += *map;
 140         map++;
 141     }
 142
 143     r300->rws->buffer_unmap(q->buf);
 144
 145     *((uint64_t*)vresult) = temp;
 146     return TRUE;
 147 }
 148
 149 static void r300_render_condition(struct pipe_context *pipe,
 150                                   struct pipe_query *query,
 151                                   uint mode)
 152 {
 153     struct r300_context *r300 = r300_context(pipe);
 154     uint64_t result = 0;
 155     boolean wait;
 156
 157     r300->skip_rendering = FALSE;
 158
 159     if (query) {
 160         wait = mode == PIPE_RENDER_COND_WAIT ||
 161                mode == PIPE_RENDER_COND_BY_REGION_WAIT;
 162
 163         if (r300_get_query_result(pipe, query, wait, &result)) {
 164             r300->skip_rendering = result == 0;
 165         }
 166     }
 167 }
 168
 169 void r300_init_query_functions(struct r300_context* r300) {
 170     r300->context.create_query = r300_create_query;
 171     r300->context.destroy_query = r300_destroy_query;
 172     r300->context.begin_query = r300_begin_query;
 173     r300->context.end_query = r300_end_query;
 174     r300->context.get_query_result = r300_get_query_result;
 175     r300->context.render_condition = r300_render_condition;
 176 }