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
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,
62                                      r300screen->info.gart_page_size,
63                                      r300screen->info.gart_page_size,
64                                      RADEON_DOMAIN_GTT, 0);
65    if (!q->buf) {
66        FREE(q);
67        return NULL;
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 boolean 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 true;
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 false;
102    }
103
104    q->num_results = 0;
105    r300_resume_query(r300, q);
106    return true;
107}
108
109void r300_stop_query(struct r300_context *r300)
110{
111    r300_emit_query_end(r300);
112    r300->query_current = NULL;
113}
114
115static bool r300_end_query(struct pipe_context* pipe,
116	                   struct pipe_query* query)
117{
118    struct r300_context* r300 = r300_context(pipe);
119    struct r300_query *q = r300_query(query);
120
121    if (q->type == PIPE_QUERY_GPU_FINISHED) {
122        pb_reference(&q->buf, NULL);
123        r300_flush(pipe, RADEON_FLUSH_ASYNC,
124                   (struct pipe_fence_handle**)&q->buf);
125        return true;
126    }
127
128    if (q != r300->query_current) {
129        fprintf(stderr, "r300: end_query: Got invalid query.\n");
130        assert(0);
131        return false;
132    }
133
134    r300_stop_query(r300);
135
136    return true;
137}
138
139static boolean r300_get_query_result(struct pipe_context* pipe,
140                                     struct pipe_query* query,
141                                     boolean wait,
142                                     union pipe_query_result *vresult)
143{
144    struct r300_context* r300 = r300_context(pipe);
145    struct r300_query *q = r300_query(query);
146    unsigned i;
147    uint32_t temp, *map;
148
149    if (q->type == PIPE_QUERY_GPU_FINISHED) {
150        if (wait) {
151            r300->rws->buffer_wait(q->buf, PIPE_TIMEOUT_INFINITE,
152                                   RADEON_USAGE_READWRITE);
153            vresult->b = TRUE;
154        } else {
155            vresult->b = r300->rws->buffer_wait(q->buf, 0, RADEON_USAGE_READWRITE);
156        }
157        return vresult->b;
158    }
159
160    map = r300->rws->buffer_map(q->buf, r300->cs,
161                                PIPE_TRANSFER_READ |
162                                (!wait ? PIPE_TRANSFER_DONTBLOCK : 0));
163    if (!map)
164        return FALSE;
165
166    /* Sum up the results. */
167    temp = 0;
168    for (i = 0; i < q->num_results; i++) {
169        /* Convert little endian values written by GPU to CPU byte order */
170        temp += util_le32_to_cpu(*map);
171        map++;
172    }
173
174    if (q->type == PIPE_QUERY_OCCLUSION_PREDICATE) {
175        vresult->b = temp != 0;
176    } else {
177        vresult->u64 = temp;
178    }
179    return TRUE;
180}
181
182static void r300_render_condition(struct pipe_context *pipe,
183                                  struct pipe_query *query,
184                                  boolean condition,
185                                  uint mode)
186{
187    struct r300_context *r300 = r300_context(pipe);
188    union pipe_query_result result;
189    boolean wait;
190
191    r300->skip_rendering = FALSE;
192
193    if (query) {
194        wait = mode == PIPE_RENDER_COND_WAIT ||
195               mode == PIPE_RENDER_COND_BY_REGION_WAIT;
196
197        if (r300_get_query_result(pipe, query, wait, &result)) {
198            if (r300_query(query)->type == PIPE_QUERY_OCCLUSION_PREDICATE) {
199                r300->skip_rendering = condition == result.b;
200            } else {
201                r300->skip_rendering = condition == !!result.u64;
202            }
203        }
204    }
205}
206
207static void
208r300_set_active_query_state(struct pipe_context *pipe, boolean enable)
209{
210}
211
212void r300_init_query_functions(struct r300_context* r300)
213{
214    r300->context.create_query = r300_create_query;
215    r300->context.destroy_query = r300_destroy_query;
216    r300->context.begin_query = r300_begin_query;
217    r300->context.end_query = r300_end_query;
218    r300->context.get_query_result = r300_get_query_result;
219    r300->context.set_active_query_state = r300_set_active_query_state;
220    r300->context.render_condition = r300_render_condition;
221}
222