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_GPU_FINISHED) {
  43         return NULL;
  44     }
  45
  46     q = CALLOC_STRUCT(r300_query);
  47     if (!q)
  48         return NULL;
  49
  50     q->type = query_type;
  51
  52     if (query_type == PIPE_QUERY_GPU_FINISHED) {
  53         return (struct pipe_query*)q;
  54     }
  55
  56     if (r300screen->caps.family == CHIP_RV530)
  57         q->num_pipes = r300screen->info.r300_num_z_pipes;
  58     else
  59         q->num_pipes = r300screen->info.r300_num_gb_pipes;
  60
  61     q->buf = r300->rws->buffer_create(r300->rws, 4096, 4096, TRUE,
  62                                       RADEON_DOMAIN_GTT, 0);
  63     if (!q->buf) {
  64         FREE(q);
  65         return NULL;
  66     }
  67     return (struct pipe_query*)q;
  68 }
  69
  70 static void r300_destroy_query(struct pipe_context* pipe,
  71                                struct pipe_query* query)
  72 {
  73     struct r300_query* q = r300_query(query);
  74
  75     pb_reference(&q->buf, NULL);
  76     FREE(query);
  77 }
  78
  79 void r300_resume_query(struct r300_context *r300,
  80                        struct r300_query *query)
  81 {
  82     r300->query_current = query;
  83     r300_mark_atom_dirty(r300, &r300->query_start);
  84 }
  85
  86 static boolean r300_begin_query(struct pipe_context* pipe,
  87                                 struct pipe_query* query)
  88 {
  89     struct r300_context* r300 = r300_context(pipe);
  90     struct r300_query* q = r300_query(query);
  91
  92     if (q->type == PIPE_QUERY_GPU_FINISHED)
  93         return true;
  94
  95     if (r300->query_current != NULL) {
  96         fprintf(stderr, "r300: begin_query: "
  97                 "Some other query has already been started.\n");
  98         assert(0);
  99         return false;
 100     }
 101
 102     q->num_results = 0;
 103     r300_resume_query(r300, q);
 104     return true;
 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, PIPE_TIMEOUT_INFINITE,
 148                                    RADEON_USAGE_READWRITE);
 149             vresult->b = TRUE;
 150         } else {
 151             vresult->b = r300->rws->buffer_wait(q->buf, 0, RADEON_USAGE_READWRITE);
 152         }
 153         return vresult->b;
 154     }
 155
 156     map = r300->rws->buffer_map(q->buf, r300->cs,
 157                                 PIPE_TRANSFER_READ |
 158                                 (!wait ? PIPE_TRANSFER_DONTBLOCK : 0));
 159     if (!map)
 160         return FALSE;
 161
 162     /* Sum up the results. */
 163     temp = 0;
 164     for (i = 0; i < q->num_results; i++) {
 165         /* Convert little endian values written by GPU to CPU byte order */
 166         temp += util_le32_to_cpu(*map);
 167         map++;
 168     }
 169
 170     if (q->type == PIPE_QUERY_OCCLUSION_PREDICATE) {
 171         vresult->b = temp != 0;
 172     } else {
 173         vresult->u64 = temp;
 174     }
 175     return TRUE;
 176 }
 177
 178 static void r300_render_condition(struct pipe_context *pipe,
 179                                   struct pipe_query *query,
 180                                   boolean condition,
 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 = condition == result.b;
 196             } else {
 197                 r300->skip_rendering = condition == !!result.u64;
 198             }
 199         }
 200     }
 201 }
 202
 203 static void
 204 r300_set_active_query_state(struct pipe_context *pipe, boolean enable)
 205 {
 206 }
 207
 208 void r300_init_query_functions(struct r300_context* r300)
 209 {
 210     r300->context.create_query = r300_create_query;
 211     r300->context.destroy_query = r300_destroy_query;
 212     r300->context.begin_query = r300_begin_query;
 213     r300->context.end_query = r300_end_query;
 214     r300->context.get_query_result = r300_get_query_result;
 215     r300->context.set_active_query_state = r300_set_active_query_state;
 216     r300->context.render_condition = r300_render_condition;
 217 }