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, 4096, 0, q->domain, q->buffer_size);
  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_context *r300 = r300_context(pipe);
  69     struct r300_query* q = r300_query(query);
  70
  71     r300->rws->buffer_reference(r300->rws, &q->buffer, NULL);
  72     remove_from_list(q);
  73     FREE(query);
  74 }
  75
  76 void r300_resume_query(struct r300_context *r300,
  77                        struct r300_query *query)
  78 {
  79     r300->query_current = query;
  80     r300->query_start.dirty = TRUE;
  81 }
  82
  83 static void r300_begin_query(struct pipe_context* pipe,
  84                              struct pipe_query* query)
  85 {
  86     struct r300_context* r300 = r300_context(pipe);
  87     struct r300_query* q = r300_query(query);
  88
  89     if (r300->query_current != NULL) {
  90         fprintf(stderr, "r300: begin_query: "
  91                 "Some other query has already been started.\n");
  92         assert(0);
  93         return;
  94     }
  95
  96     q->num_results = 0;
  97     r300_resume_query(r300, q);
  98 }
  99
 100 void r300_stop_query(struct r300_context *r300)
 101 {
 102     r300_emit_query_end(r300);
 103     r300->query_current = NULL;
 104 }
 105
 106 static void r300_end_query(struct pipe_context* pipe,
 107                            struct pipe_query* query)
 108 {
 109     struct r300_context* r300 = r300_context(pipe);
 110     struct r300_query *q = r300_query(query);
 111
 112     if (q != r300->query_current) {
 113         fprintf(stderr, "r300: end_query: Got invalid query.\n");
 114         assert(0);
 115         return;
 116     }
 117
 118     r300_stop_query(r300);
 119 }
 120
 121 static boolean r300_get_query_result(struct pipe_context* pipe,
 122                                      struct pipe_query* query,
 123                                      boolean wait,
 124                                      void* vresult)
 125 {
 126     struct r300_context* r300 = r300_context(pipe);
 127     struct r300_query *q = r300_query(query);
 128     unsigned flags, i;
 129     uint32_t temp, *map;
 130     uint64_t *result = (uint64_t*)vresult;
 131
 132     if (!q->flushed)
 133         pipe->flush(pipe, 0, NULL);
 134
 135     flags = PIPE_TRANSFER_READ | (!wait ? PIPE_TRANSFER_DONTBLOCK : 0);
 136
 137     map = r300->rws->buffer_map(r300->rws, q->buffer, flags);
 138     if (!map)
 139         return FALSE;
 140
 141     /* Sum up the results. */
 142     temp = 0;
 143     for (i = 0; i < q->num_results; i++) {
 144         temp += *map;
 145         map++;
 146     }
 147
 148     r300->rws->buffer_unmap(r300->rws, q->buffer);
 149
 150     *result = temp;
 151     return TRUE;
 152 }
 153
 154 static void r300_render_condition(struct pipe_context *pipe,
 155                                   struct pipe_query *query,
 156                                   uint mode)
 157 {
 158     struct r300_context *r300 = r300_context(pipe);
 159     uint64_t result;
 160     boolean wait;
 161
 162     if (query) {
 163         wait = mode == PIPE_RENDER_COND_WAIT ||
 164                mode == PIPE_RENDER_COND_BY_REGION_WAIT;
 165
 166         if (!r300_get_query_result(pipe, query, wait, &result)) {
 167             r300->skip_rendering = FALSE;
 168         }
 169
 170         r300->skip_rendering = result == 0;
 171     } else {
 172         r300->skip_rendering = FALSE;
 173     }
 174 }
 175
 176 /***************************************************************************
 177  * Fake occlusion queries (for debugging)
 178  ***************************************************************************/
 179
 180 static unsigned r300_fake_query;
 181
 182 static struct pipe_query *r300_fake_create_query(struct pipe_context *pipe,
 183                                                  unsigned query_type)
 184 {
 185     return (struct pipe_query*)&r300_fake_query;
 186 }
 187
 188 static void r300_fake_destroy_query(struct pipe_context* pipe,
 189                                     struct pipe_query* query)
 190 {
 191 }
 192
 193 static void r300_fake_begin_query(struct pipe_context* pipe,
 194                                   struct pipe_query* query)
 195 {
 196 }
 197
 198 static void r300_fake_end_query(struct pipe_context* pipe,
 199                                 struct pipe_query* query)
 200 {
 201 }
 202
 203 static boolean r300_fake_get_query_result(struct pipe_context* pipe,
 204                                           struct pipe_query* query,
 205                                           boolean wait, void* vresult)
 206 {
 207     uint64_t *result = (uint64_t*)vresult;
 208     *result = 1000000;
 209     return TRUE;
 210 }
 211
 212 static void r300_fake_render_condition(struct pipe_context *pipe,
 213                                        struct pipe_query *query, uint mode)
 214 {
 215 }
 216
 217 void r300_init_query_functions(struct r300_context* r300) {
 218     if (DBG_ON(r300, DBG_FAKE_OCC)) {
 219         r300->context.create_query = r300_fake_create_query;
 220         r300->context.destroy_query = r300_fake_destroy_query;
 221         r300->context.begin_query = r300_fake_begin_query;
 222         r300->context.end_query = r300_fake_end_query;
 223         r300->context.get_query_result = r300_fake_get_query_result;
 224         r300->context.render_condition = r300_fake_render_condition;
 225     } else {
 226         r300->context.create_query = r300_create_query;
 227         r300->context.destroy_query = r300_destroy_query;
 228         r300->context.begin_query = r300_begin_query;
 229         r300->context.end_query = r300_end_query;
 230         r300->context.get_query_result = r300_get_query_result;
 231         r300->context.render_condition = r300_render_condition;
 232     }
 233 }