r300_query.c revision 6d73382afc1d2a5e5815d0e6e7f39e0bf8138002 
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{
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_FAMILY_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,
61                                      PIPE_BIND_CUSTOM, 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
71static 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
80void 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
87static 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
107void r300_stop_query(struct r300_context *r300)
108{
109    r300_emit_query_end(r300);
110    r300->query_current = NULL;
111}
112
113static 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
135static 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->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->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
179static 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
203void 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}
212