1/*
2 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
3 * Copyright 2010 Marek Olšák <maraeo@gmail.com>
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
22 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
23
24#include "draw/draw_context.h"
25#include "draw/draw_private.h"
26
27#include "util/u_upload_mgr.h"
28
29#include "util/os_time.h"
30
31#include "r300_context.h"
32#include "r300_cs.h"
33#include "r300_emit.h"
34
35
36static void r300_flush_and_cleanup(struct r300_context *r300, unsigned flags,
37                                   struct pipe_fence_handle **fence)
38{
39    struct r300_atom *atom;
40
41    r300_emit_hyperz_end(r300);
42    r300_emit_query_end(r300);
43    if (r300->screen->caps.is_r500)
44        r500_emit_index_bias(r300, 0);
45
46    /* The DDX doesn't set these regs. */
47    {
48        CS_LOCALS(r300);
49        OUT_CS_REG_SEQ(R300_GB_MSPOS0, 2);
50        OUT_CS(0x66666666);
51        OUT_CS(0x6666666);
52    }
53
54    r300->flush_counter++;
55    r300->rws->cs_flush(&r300->cs, flags, fence);
56    r300->dirty_hw = 0;
57
58    /* New kitchen sink, baby. */
59    foreach_atom(r300, atom) {
60        if (atom->state || atom->allow_null_state) {
61            r300_mark_atom_dirty(r300, atom);
62        }
63    }
64    r300->vertex_arrays_dirty = TRUE;
65
66    /* Unmark HWTCL state for SWTCL. */
67    if (!r300->screen->caps.has_tcl) {
68        r300->vs_state.dirty = FALSE;
69        r300->vs_constants.dirty = FALSE;
70        r300->clip_state.dirty = FALSE;
71    }
72}
73
74void r300_flush(struct pipe_context *pipe,
75                unsigned flags,
76                struct pipe_fence_handle **fence)
77{
78    struct r300_context *r300 = r300_context(pipe);
79
80    if (r300->dirty_hw) {
81        r300_flush_and_cleanup(r300, flags, fence);
82    } else {
83        if (fence) {
84            /* We have to create a fence object, but the command stream is empty
85             * and we cannot emit an empty CS. Let's write to some reg. */
86            CS_LOCALS(r300);
87            OUT_CS_REG(RB3D_COLOR_CHANNEL_MASK, 0);
88            r300->rws->cs_flush(&r300->cs, flags, fence);
89        } else {
90            /* Even if hw is not dirty, we should at least reset the CS in case
91             * the space checking failed for the first draw operation. */
92            r300->rws->cs_flush(&r300->cs, flags, NULL);
93        }
94    }
95
96    /* Update Hyper-Z status. */
97    if (r300->hyperz_enabled) {
98        /* If there was a Z clear, keep Hyper-Z access. */
99        if (r300->num_z_clears) {
100            r300->hyperz_time_of_last_flush = os_time_get();
101            r300->num_z_clears = 0;
102        } else if (r300->hyperz_time_of_last_flush - os_time_get() > 2000000) {
103            /* If there hasn't been a Z clear for 2 seconds, revoke Hyper-Z access. */
104            r300->hiz_in_use = FALSE;
105
106            /* Decompress the Z buffer. */
107            if (r300->zmask_in_use) {
108                if (r300->locked_zbuffer) {
109                    r300_decompress_zmask_locked(r300);
110                } else {
111                    r300_decompress_zmask(r300);
112                }
113
114                if (fence && *fence)
115                    r300->rws->fence_reference(fence, NULL);
116                r300_flush_and_cleanup(r300, flags, fence);
117            }
118
119            /* Revoke Hyper-Z access, so that some other process can take it. */
120            r300->rws->cs_request_feature(&r300->cs, RADEON_FID_R300_HYPERZ_ACCESS,
121                                          FALSE);
122            r300->hyperz_enabled = FALSE;
123        }
124    }
125}
126
127static void r300_flush_wrapped(struct pipe_context *pipe,
128                               struct pipe_fence_handle **fence,
129                               unsigned flags)
130{
131    if (flags & PIPE_FLUSH_HINT_FINISH)
132        flags &= ~PIPE_FLUSH_ASYNC;
133
134    r300_flush(pipe, flags, fence);
135}
136
137void r300_init_flush_functions(struct r300_context* r300)
138{
139    r300->context.flush = r300_flush_wrapped;
140}
141