r300_flush.c revision 848b8605 
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_simple_list.h"
28#include "util/u_upload_mgr.h"
29
30#include "os/os_time.h"
31
32#include "r300_context.h"
33#include "r300_cs.h"
34#include "r300_emit.h"
35
36
37static void r300_flush_and_cleanup(struct r300_context *r300, unsigned flags,
38                                   struct pipe_fence_handle **fence)
39{
40    struct r300_atom *atom;
41
42    r300_emit_hyperz_end(r300);
43    r300_emit_query_end(r300);
44    if (r300->screen->caps.is_r500)
45        r500_emit_index_bias(r300, 0);
46
47    /* The DDX doesn't set these regs. */
48    if (r300->screen->info.drm_minor >= 6) {
49        CS_LOCALS(r300);
50        OUT_CS_REG_SEQ(R300_GB_MSPOS0, 2);
51        OUT_CS(0x66666666);
52        OUT_CS(0x6666666);
53    }
54
55    r300->flush_counter++;
56    r300->rws->cs_flush(r300->cs, flags, fence, 0);
57    r300->dirty_hw = 0;
58
59    /* New kitchen sink, baby. */
60    foreach_atom(r300, atom) {
61        if (atom->state || atom->allow_null_state) {
62            r300_mark_atom_dirty(r300, atom);
63        }
64    }
65    r300->vertex_arrays_dirty = TRUE;
66
67    /* Unmark HWTCL state for SWTCL. */
68    if (!r300->screen->caps.has_tcl) {
69        r300->vs_state.dirty = FALSE;
70        r300->vs_constants.dirty = FALSE;
71        r300->clip_state.dirty = FALSE;
72    }
73}
74
75void r300_flush(struct pipe_context *pipe,
76                unsigned flags,
77                struct pipe_fence_handle **fence)
78{
79    struct r300_context *r300 = r300_context(pipe);
80
81    if (r300->screen->info.drm_minor >= 12) {
82        flags |= RADEON_FLUSH_KEEP_TILING_FLAGS;
83    }
84
85    if (r300->dirty_hw) {
86        r300_flush_and_cleanup(r300, flags, fence);
87    } else {
88        if (fence) {
89            /* We have to create a fence object, but the command stream is empty
90             * and we cannot emit an empty CS. Let's write to some reg. */
91            CS_LOCALS(r300);
92            OUT_CS_REG(RB3D_COLOR_CHANNEL_MASK, 0);
93            r300->rws->cs_flush(r300->cs, flags, fence, 0);
94        } else {
95            /* Even if hw is not dirty, we should at least reset the CS in case
96             * the space checking failed for the first draw operation. */
97            r300->rws->cs_flush(r300->cs, flags, NULL, 0);
98        }
99    }
100
101    /* Update Hyper-Z status. */
102    if (r300->hyperz_enabled) {
103        /* If there was a Z clear, keep Hyper-Z access. */
104        if (r300->num_z_clears) {
105            r300->hyperz_time_of_last_flush = os_time_get();
106            r300->num_z_clears = 0;
107        } else if (r300->hyperz_time_of_last_flush - os_time_get() > 2000000) {
108            /* If there hasn't been a Z clear for 2 seconds, revoke Hyper-Z access. */
109            r300->hiz_in_use = FALSE;
110
111            /* Decompress the Z buffer. */
112            if (r300->zmask_in_use) {
113                if (r300->locked_zbuffer) {
114                    r300_decompress_zmask_locked(r300);
115                } else {
116                    r300_decompress_zmask(r300);
117                }
118
119                if (fence && *fence)
120                    r300->rws->fence_reference(fence, NULL);
121                r300_flush_and_cleanup(r300, flags, fence);
122            }
123
124            /* Revoke Hyper-Z access, so that some other process can take it. */
125            r300->rws->cs_request_feature(r300->cs, RADEON_FID_R300_HYPERZ_ACCESS,
126                                          FALSE);
127            r300->hyperz_enabled = FALSE;
128        }
129    }
130}
131
132static void r300_flush_wrapped(struct pipe_context *pipe,
133                               struct pipe_fence_handle **fence,
134                               unsigned flags)
135{
136    r300_flush(pipe,
137               flags & PIPE_FLUSH_END_OF_FRAME ? RADEON_FLUSH_END_OF_FRAME : 0,
138               fence);
139}
140
141void r300_init_flush_functions(struct r300_context* r300)
142{
143    r300->context.flush = r300_flush_wrapped;
144}
145