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         query_type != PIPE_QUERY_OCCLUSION_PREDICATE &&
  41         query_type != PIPE_QUERY_GPU_FINISHED) {
  42         return NULL;
  43     }
  44
  45     q = CALLOC_STRUCT(r300_query);
  46     if (!q)
  47         return NULL;
  48
  49     q->type = query_type;
  50
  51     if (query_type == PIPE_QUERY_GPU_FINISHED) {
  52         return (struct pipe_query*)q;
  53     }
  54
  55     if (r300screen->caps.family == CHIP_RV530)
  56         q->num_pipes = r300screen->info.r300_num_z_pipes;
  57     else
  58         q->num_pipes = r300screen->info.r300_num_gb_pipes;
  59
  60     q->buf = r300->rws->buffer_create(r300->rws, 4096, 4096, TRUE,
  61                                       RADEON_DOMAIN_GTT);
  62     if (!q->buf) {
  63         FREE(q);
  64         return NULL;
  65     }
  66     q->cs_buf = r300->rws->buffer_get_cs_handle(q->buf);
  67
  68     return (struct pipe_query*)q;
  69 }
  70
  71 static void r300_destroy_query(struct pipe_context* pipe,
  72                                struct pipe_query* query)
  73 {
  74     struct r300_query* q = r300_query(query);
  75
  76     pb_reference(&q->buf, NULL);
  77     FREE(query);
  78 }
  79
  80 void r300_resume_query(struct r300_context *r300,
  81                        struct r300_query *query)
  82 {
  83     r300->query_current = query;
  84     r300_mark_atom_dirty(r300, &r300->query_start);
  85 }
  86
  87 static void r300_begin_query(struct pipe_context* pipe,
  88                              struct pipe_query* query)
  89 {
  90     struct r300_context* r300 = r300_context(pipe);
  91     struct r300_query* q = r300_query(query);
  92
  93     if (q->type == PIPE_QUERY_GPU_FINISHED)
  94         return;
  95
  96     if (r300->query_current != NULL) {
  97         fprintf(stderr, "r300: begin_query: "
  98                 "Some other query has already been started.\n");
  99         assert(0);
 100         return;
 101     }
 102
 103     q->num_results = 0;
 104     r300_resume_query(r300, q);
 105 }
 106
 107 void r300_stop_query(struct r300_context *r300)
 108 {
 109     r300_emit_query_end(r300);
 110     r300->query_current = NULL;
 111 }
 112
 113 static void r300_end_query(struct pipe_context* pipe,
 114                            struct pipe_query* query)
 115 {
 116     struct r300_context* r300 = r300_context(pipe);
 117     struct r300_query *q = r300_query(query);
 118
 119     if (q->type == PIPE_QUERY_GPU_FINISHED) {
 120         pb_reference(&q->buf, NULL);
 121         r300_flush(pipe, RADEON_FLUSH_ASYNC,
 122                    (struct pipe_fence_handle**)&q->buf);
 123         return;
 124     }
 125
 126     if (q != r300->query_current) {
 127         fprintf(stderr, "r300: end_query: Got invalid query.\n");
 128         assert(0);
 129         return;
 130     }
 131
 132     r300_stop_query(r300);
 133 }
 134
 135 static boolean r300_get_query_result(struct pipe_context* pipe,
 136                                      struct pipe_query* query,
 137                                      boolean wait,
 138                                      union pipe_query_result *vresult)
 139 {
 140     struct r300_context* r300 = r300_context(pipe);
 141     struct r300_query *q = r300_query(query);
 142     unsigned i;
 143     uint32_t temp, *map;
 144
 145     if (q->type == PIPE_QUERY_GPU_FINISHED) {
 146         if (wait) {
 147             r300->rws->buffer_wait(q->buf, RADEON_USAGE_READWRITE);
 148             vresult->b = TRUE;
 149         } else {
 150             vresult->b = !r300->rws->buffer_is_busy(q->buf, RADEON_USAGE_READWRITE);
 151         }
 152         return vresult->b;
 153     }
 154
 155     map = r300->rws->buffer_map(q->cs_buf, r300->cs,
 156                                 PIPE_TRANSFER_READ |
 157                                 (!wait ? PIPE_TRANSFER_DONTBLOCK : 0));
 158     if (!map)
 159         return FALSE;
 160
 161     /* Sum up the results. */
 162     temp = 0;
 163     for (i = 0; i < q->num_results; i++) {
 164         /* Convert little endian values written by GPU to CPU byte order */
 165         temp += util_le32_to_cpu(*map);
 166         map++;
 167     }
 168
 169     r300->rws->buffer_unmap(q->cs_buf);
 170
 171     if (q->type == PIPE_QUERY_OCCLUSION_PREDICATE) {
 172         vresult->b = temp != 0;
 173     } else {
 174         vresult->u64 = temp;
 175     }
 176     return TRUE;
 177 }
 178
 179 static void r300_render_condition(struct pipe_context *pipe,
 180                                   struct pipe_query *query,
 181                                   uint mode)
 182 {
 183     struct r300_context *r300 = r300_context(pipe);
 184     union pipe_query_result result;
 185     boolean wait;
 186
 187     r300->skip_rendering = FALSE;
 188
 189     if (query) {
 190         wait = mode == PIPE_RENDER_COND_WAIT ||
 191                mode == PIPE_RENDER_COND_BY_REGION_WAIT;
 192
 193         if (r300_get_query_result(pipe, query, wait, &result)) {
 194             if (r300_query(query)->type == PIPE_QUERY_OCCLUSION_PREDICATE) {
 195                 r300->skip_rendering = !result.b;
 196             } else {
 197                 r300->skip_rendering = !result.u64;
 198             }
 199         }
 200     }
 201 }
 202
 203 void r300_init_query_functions(struct r300_context* r300)
 204 {
 205     r300->context.create_query = r300_create_query;
 206     r300->context.destroy_query = r300_destroy_query;
 207     r300->context.begin_query = r300_begin_query;
 208     r300->context.end_query = r300_end_query;
 209     r300->context.get_query_result = r300_get_query_result;
 210     r300->context.render_condition = r300_render_condition;
 211 }