r300_query.c revision fbd758c55e6dc443f877bd87d5e6c54c86f61a33 
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 "r300_query.h"
24
25static struct pipe_query* r300_create_query(struct pipe_context* pipe,
26                                            unsigned query_type)
27{
28    struct r300_query* q = CALLOC_STRUCT(r300_query);
29
30    q->type = query_type;
31    assert(q->type == PIPE_QUERY_OCCLUSION_COUNTER);
32
33    /* XXX this is to force winsys to give us a GTT buffer */
34    q->buf = pipe->screen->buffer_create(pipe->screen, 64,
35            PIPE_BUFFER_USAGE_VERTEX, 64);
36
37    return (struct pipe_query*)q;
38}
39
40static void r300_destroy_query(struct pipe_context* pipe,
41                               struct pipe_query* query)
42{
43    FREE(query);
44}
45
46static void r300_begin_query(struct pipe_context* pipe,
47                             struct pipe_query* query)
48{
49    struct r300_context* r300 = r300_context(pipe);
50    struct r300_query* q = (struct r300_query*)query;
51    CS_LOCALS(r300);
52
53    uint32_t* map = pipe_buffer_map(pipe->screen, q->buf,
54            PIPE_BUFFER_USAGE_CPU_WRITE);
55    *map = ~0;
56    pipe_buffer_unmap(pipe->screen, q->buf);
57
58    BEGIN_CS(2);
59    OUT_CS_REG(R300_ZB_ZPASS_DATA, 0);
60    END_CS;
61}
62
63static void r300_end_query(struct pipe_context* pipe,
64                           struct pipe_query* query)
65{
66    struct r300_context* r300 = r300_context(pipe);
67    struct r300_query* q = (struct r300_query*)query;
68    CS_LOCALS(r300);
69
70    BEGIN_CS(4);
71    OUT_CS_REG_SEQ(R300_ZB_ZPASS_ADDR, 1);
72    OUT_CS_RELOC(q->buf, 0, 0, RADEON_GEM_DOMAIN_GTT, 0);
73    END_CS;
74}
75
76static boolean r300_get_query_result(struct pipe_context* pipe,
77                                     struct pipe_query* query,
78                                     boolean wait,
79                                     uint64_t* result)
80{
81    struct r300_query* q = (struct r300_query*)query;
82    uint32_t temp;
83
84    if (wait) {
85        /* Well, we're expected to just sit here and spin, so let's go ahead
86         * and flush so we can be sure that the card's spinning... */
87        /* XXX double-check these params */
88        pipe->flush(pipe, 0, NULL);
89    }
90
91    uint32_t* map = pipe_buffer_map(pipe->screen, q->buf,
92            PIPE_BUFFER_USAGE_CPU_READ);
93    temp = *map;
94    pipe_buffer_unmap(pipe->screen, q->buf);
95
96    if (temp < 0) {
97        /* Our results haven't been written yet... */
98        return FALSE;
99    }
100
101    *result = temp;
102    return TRUE;
103}
104
105void r300_init_query_functions(struct r300_context* r300) {
106    r300->context.create_query = r300_create_query;
107    r300->context.destroy_query = r300_destroy_query;
108    r300->context.begin_query = r300_begin_query;
109    r300->context.end_query = r300_end_query;
110    r300->context.get_query_result = r300_get_query_result;
111}
112