r300_query.c revision 43e4b3e311df3bede930229380a7aa389ac7019a 
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
32static 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);
63    if (!q->buf) {
64        FREE(q);
65        return NULL;
66    }
67    q->cs_buf = r300->rws->buffer_get_cs_handle(q->buf);
68
69    return (struct pipe_query*)q;
70}
71
72static void r300_destroy_query(struct pipe_context* pipe,
73                               struct pipe_query* query)
74{
75    struct r300_query* q = r300_query(query);
76
77    pb_reference(&q->buf, NULL);
78    FREE(query);
79}
80
81void r300_resume_query(struct r300_context *r300,
82                       struct r300_query *query)
83{
84    r300->query_current = query;
85    r300_mark_atom_dirty(r300, &r300->query_start);
86}
87
88static void r300_begin_query(struct pipe_context* pipe,
89                             struct pipe_query* query)
90{
91    struct r300_context* r300 = r300_context(pipe);
92    struct r300_query* q = r300_query(query);
93
94    if (q->type == PIPE_QUERY_GPU_FINISHED)
95        return;
96
97    if (r300->query_current != NULL) {
98        fprintf(stderr, "r300: begin_query: "
99                "Some other query has already been started.\n");
100        assert(0);
101        return;
102    }
103
104    q->num_results = 0;
105    r300_resume_query(r300, q);
106}
107
108void r300_stop_query(struct r300_context *r300)
109{
110    r300_emit_query_end(r300);
111    r300->query_current = NULL;
112}
113
114static void r300_end_query(struct pipe_context* pipe,
115	                   struct pipe_query* query)
116{
117    struct r300_context* r300 = r300_context(pipe);
118    struct r300_query *q = r300_query(query);
119
120    if (q->type == PIPE_QUERY_GPU_FINISHED) {
121        pb_reference(&q->buf, NULL);
122        r300_flush(pipe, RADEON_FLUSH_ASYNC,
123                   (struct pipe_fence_handle**)&q->buf);
124        return;
125    }
126
127    if (q != r300->query_current) {
128        fprintf(stderr, "r300: end_query: Got invalid query.\n");
129        assert(0);
130        return;
131    }
132
133    r300_stop_query(r300);
134}
135
136static boolean r300_get_query_result(struct pipe_context* pipe,
137                                     struct pipe_query* query,
138                                     boolean wait,
139                                     union pipe_query_result *vresult)
140{
141    struct r300_context* r300 = r300_context(pipe);
142    struct r300_query *q = r300_query(query);
143    unsigned i;
144    uint32_t temp, *map;
145
146    if (q->type == PIPE_QUERY_GPU_FINISHED) {
147        if (wait) {
148            r300->rws->buffer_wait(q->buf, RADEON_USAGE_READWRITE);
149            vresult->b = TRUE;
150        } else {
151            vresult->b = !r300->rws->buffer_is_busy(q->buf, RADEON_USAGE_READWRITE);
152        }
153        return vresult->b;
154    }
155
156    map = r300->rws->buffer_map(q->cs_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    r300->rws->buffer_unmap(q->cs_buf);
171
172    if (q->type == PIPE_QUERY_OCCLUSION_PREDICATE) {
173        vresult->b = temp != 0;
174    } else {
175        vresult->u64 = temp;
176    }
177    return TRUE;
178}
179
180static void r300_render_condition(struct pipe_context *pipe,
181                                  struct pipe_query *query,
182                                  boolean condition,
183                                  uint mode)
184{
185    struct r300_context *r300 = r300_context(pipe);
186    union pipe_query_result result;
187    boolean wait;
188
189    r300->skip_rendering = FALSE;
190
191    if (query) {
192        wait = mode == PIPE_RENDER_COND_WAIT ||
193               mode == PIPE_RENDER_COND_BY_REGION_WAIT;
194
195        if (r300_get_query_result(pipe, query, wait, &result)) {
196            if (r300_query(query)->type == PIPE_QUERY_OCCLUSION_PREDICATE) {
197                r300->skip_rendering = condition == result.b;
198            } else {
199                r300->skip_rendering = condition == !!result.u64;
200            }
201        }
202    }
203}
204
205void r300_init_query_functions(struct r300_context* r300)
206{
207    r300->context.create_query = r300_create_query;
208    r300->context.destroy_query = r300_destroy_query;
209    r300->context.begin_query = r300_begin_query;
210    r300->context.end_query = r300_end_query;
211    r300->context.get_query_result = r300_get_query_result;
212    r300->context.render_condition = r300_render_condition;
213}
214