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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 
r300_flush_and_cleanup(struct r300_context * r300,unsigned flags)37 static void r300_flush_and_cleanup(struct r300_context *r300, unsigned flags)
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     r300->flush_counter++;
47     r300->rws->cs_flush(r300->cs, flags);
48     r300->dirty_hw = 0;
49 
50     /* New kitchen sink, baby. */
51     foreach_atom(r300, atom) {
52         if (atom->state || atom->allow_null_state) {
53             r300_mark_atom_dirty(r300, atom);
54         }
55     }
56     r300->vertex_arrays_dirty = TRUE;
57 
58     /* Unmark HWTCL state for SWTCL. */
59     if (!r300->screen->caps.has_tcl) {
60         r300->vs_state.dirty = FALSE;
61         r300->vs_constants.dirty = FALSE;
62         r300->clip_state.dirty = FALSE;
63     }
64 }
65 
r300_flush(struct pipe_context * pipe,unsigned flags,struct pipe_fence_handle ** fence)66 void r300_flush(struct pipe_context *pipe,
67                 unsigned flags,
68                 struct pipe_fence_handle **fence)
69 {
70     struct r300_context *r300 = r300_context(pipe);
71     struct pb_buffer **rfence = (struct pb_buffer**)fence;
72 
73     if (r300->draw && !r300->draw_vbo_locked)
74 	r300_draw_flush_vbuf(r300);
75 
76     if (r300->screen->info.drm_minor >= 12) {
77         flags |= RADEON_FLUSH_KEEP_TILING_FLAGS;
78     }
79 
80     if (rfence) {
81         /* Create a fence, which is a dummy BO. */
82         *rfence = r300->rws->buffer_create(r300->rws, 1, 1,
83                                            PIPE_BIND_CUSTOM,
84                                            RADEON_DOMAIN_GTT);
85         /* Add the fence as a dummy relocation. */
86         r300->rws->cs_add_reloc(r300->cs,
87                                 r300->rws->buffer_get_cs_handle(*rfence),
88                                 RADEON_USAGE_READWRITE, RADEON_DOMAIN_GTT);
89     }
90 
91     if (r300->dirty_hw) {
92         r300_flush_and_cleanup(r300, flags);
93     } else {
94         if (rfence) {
95             /* We have to create a fence object, but the command stream is empty
96              * and we cannot emit an empty CS. Let's write to some reg. */
97             CS_LOCALS(r300);
98             OUT_CS_REG(RB3D_COLOR_CHANNEL_MASK, 0);
99             r300->rws->cs_flush(r300->cs, flags);
100         } else {
101             /* Even if hw is not dirty, we should at least reset the CS in case
102              * the space checking failed for the first draw operation. */
103             r300->rws->cs_flush(r300->cs, flags);
104         }
105     }
106 
107     /* Update Hyper-Z status. */
108     if (r300->num_z_clears) {
109         r300->hyperz_time_of_last_flush = os_time_get();
110     } else if (!r300->hyperz_time_of_last_flush > 2000000) {
111         /* 2 seconds without a Z clear pretty much means a dead context
112          * for HyperZ. */
113 
114         r300->hiz_in_use = FALSE;
115 
116         /* Decompress Z buffer. */
117         if (r300->zmask_in_use) {
118             if (r300->locked_zbuffer) {
119                 r300_decompress_zmask_locked(r300);
120             } else {
121                 r300_decompress_zmask(r300);
122             }
123 
124             r300_flush_and_cleanup(r300, flags);
125         }
126 
127         /* Release HyperZ. */
128         r300->rws->cs_request_feature(r300->cs, RADEON_FID_R300_HYPERZ_ACCESS,
129                                       FALSE);
130     }
131     r300->num_z_clears = 0;
132 }
133 
r300_flush_wrapped(struct pipe_context * pipe,struct pipe_fence_handle ** fence)134 static void r300_flush_wrapped(struct pipe_context *pipe,
135                                struct pipe_fence_handle **fence)
136 {
137     r300_flush(pipe, 0, fence);
138 }
139 
r300_init_flush_functions(struct r300_context * r300)140 void r300_init_flush_functions(struct r300_context* r300)
141 {
142     r300->context.flush = r300_flush_wrapped;
143 }
144