r300_query.c revision b71bfc4400e1d7c15a2bebbbd3b26a8770fbf546 
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_cs.h"
29#include "r300_emit.h"
30#include "r300_query.h"
31#include "r300_reg.h"
32
33#include <stdio.h>
34
35static struct pipe_query *r300_create_query(struct pipe_context *pipe,
36                                            unsigned query_type)
37{
38    struct r300_context *r300 = r300_context(pipe);
39    struct r300_screen *r300screen = r300->screen;
40    unsigned query_size;
41    struct r300_query *q, *qptr;
42
43    q = CALLOC_STRUCT(r300_query);
44
45    q->type = query_type;
46    assert(q->type == PIPE_QUERY_OCCLUSION_COUNTER);
47
48    q->active = FALSE;
49
50    if (r300screen->caps.family == CHIP_FAMILY_RV530)
51        query_size = r300screen->caps.num_z_pipes * sizeof(uint32_t);
52    else
53        query_size = r300screen->caps.num_frag_pipes * sizeof(uint32_t);
54
55    if (!is_empty_list(&r300->query_list)) {
56        qptr = last_elem(&r300->query_list);
57        q->offset = qptr->offset + query_size;
58    }
59    insert_at_tail(&r300->query_list, q);
60
61    /* XXX */
62    if (q->offset >= 4096) {
63        q->offset = 0;
64    }
65
66    return (struct pipe_query*)q;
67}
68
69static void r300_destroy_query(struct pipe_context* pipe,
70                               struct pipe_query* query)
71{
72    struct r300_query* q = (struct r300_query*)query;
73
74    remove_from_list(q);
75    FREE(query);
76}
77
78static void r300_begin_query(struct pipe_context* pipe,
79                             struct pipe_query* query)
80{
81    uint32_t* map;
82    struct r300_context* r300 = r300_context(pipe);
83    struct r300_query* q = (struct r300_query*)query;
84
85    assert(r300->query_current == NULL);
86
87    map = pipe->screen->buffer_map(pipe->screen, r300->oqbo,
88            PIPE_BUFFER_USAGE_CPU_WRITE);
89    map += q->offset / 4;
90    *map = ~0U;
91    pipe->screen->buffer_unmap(pipe->screen, r300->oqbo);
92
93    q->flushed = FALSE;
94    r300->query_current = q;
95    r300->dirty_state |= R300_NEW_QUERY;
96}
97
98static void r300_end_query(struct pipe_context* pipe,
99	                   struct pipe_query* query)
100{
101    struct r300_context* r300 = r300_context(pipe);
102    struct r300_query* q = (struct r300_query*)query;
103
104    r300_emit_query_end(r300);
105    q->begin_emitted = false;
106    r300->query_current = NULL;
107}
108
109static boolean r300_get_query_result(struct pipe_context* pipe,
110                                     struct pipe_query* query,
111                                     boolean wait,
112                                     uint64_t* result)
113{
114    struct r300_context* r300 = r300_context(pipe);
115    struct r300_screen* r300screen = r300->screen;
116    struct r300_query *q = (struct r300_query*)query;
117    unsigned flags = PIPE_BUFFER_USAGE_CPU_READ;
118    uint32_t* map;
119    uint32_t temp = 0;
120    unsigned i, num_results;
121
122    if (q->flushed == FALSE)
123        pipe->flush(pipe, 0, NULL);
124    if (!wait) {
125        flags |= PIPE_BUFFER_USAGE_DONTBLOCK;
126    }
127
128    map = pipe->screen->buffer_map(pipe->screen, r300->oqbo, flags);
129    if (!map)
130        return FALSE;
131    map += q->offset / 4;
132
133    if (r300screen->caps.family == CHIP_FAMILY_RV530)
134        num_results = r300screen->caps.num_z_pipes;
135    else
136        num_results = r300screen->caps.num_frag_pipes;
137
138    for (i = 0; i < num_results; i++) {
139        if (*map == ~0U) {
140            /* Looks like our results aren't ready yet. */
141            if (wait) {
142                fprintf(stderr, "r300: Despite waiting, OQ results haven't "
143                                "come in yet.\n");
144            }
145            temp = ~0U;
146            break;
147        }
148        temp += *map;
149        map++;
150    }
151    pipe->screen->buffer_unmap(pipe->screen, r300->oqbo);
152
153    if (temp == ~0U) {
154        /* Our results haven't been written yet... */
155        return FALSE;
156    }
157
158    *result = temp;
159    return TRUE;
160}
161
162static void r300_render_condition(struct pipe_context *pipe,
163                                  struct pipe_query *query,
164                                  uint mode)
165{
166    struct r300_context *r300 = r300_context(pipe);
167    uint64_t result;
168    boolean wait;
169
170    if (query) {
171        wait = mode == PIPE_RENDER_COND_WAIT ||
172               mode == PIPE_RENDER_COND_BY_REGION_WAIT;
173
174        if (!r300_get_query_result(pipe, query, wait, &result)) {
175            r300->skip_rendering = FALSE;
176        }
177
178        r300->skip_rendering = result == 0;
179    } else {
180        r300->skip_rendering = FALSE;
181    }
182}
183
184void r300_init_query_functions(struct r300_context* r300) {
185    r300->context.create_query = r300_create_query;
186    r300->context.destroy_query = r300_destroy_query;
187    r300->context.begin_query = r300_begin_query;
188    r300->context.end_query = r300_end_query;
189    r300->context.get_query_result = r300_get_query_result;
190    r300->context.render_condition = r300_render_condition;
191}
192