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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/simple_list.h"
28 #include "util/u_upload_mgr.h"
29 
30 #include "util/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,struct pipe_fence_handle ** fence)37 static 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     {
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);
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 
r300_flush(struct pipe_context * pipe,unsigned flags,struct pipe_fence_handle ** fence)75 void 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->dirty_hw) {
82         r300_flush_and_cleanup(r300, flags, fence);
83     } else {
84         if (fence) {
85             /* We have to create a fence object, but the command stream is empty
86              * and we cannot emit an empty CS. Let's write to some reg. */
87             CS_LOCALS(r300);
88             OUT_CS_REG(RB3D_COLOR_CHANNEL_MASK, 0);
89             r300->rws->cs_flush(r300->cs, flags, fence);
90         } else {
91             /* Even if hw is not dirty, we should at least reset the CS in case
92              * the space checking failed for the first draw operation. */
93             r300->rws->cs_flush(r300->cs, flags, NULL);
94         }
95     }
96 
97     /* Update Hyper-Z status. */
98     if (r300->hyperz_enabled) {
99         /* If there was a Z clear, keep Hyper-Z access. */
100         if (r300->num_z_clears) {
101             r300->hyperz_time_of_last_flush = os_time_get();
102             r300->num_z_clears = 0;
103         } else if (r300->hyperz_time_of_last_flush - os_time_get() > 2000000) {
104             /* If there hasn't been a Z clear for 2 seconds, revoke Hyper-Z access. */
105             r300->hiz_in_use = FALSE;
106 
107             /* Decompress the Z buffer. */
108             if (r300->zmask_in_use) {
109                 if (r300->locked_zbuffer) {
110                     r300_decompress_zmask_locked(r300);
111                 } else {
112                     r300_decompress_zmask(r300);
113                 }
114 
115                 if (fence && *fence)
116                     r300->rws->fence_reference(fence, NULL);
117                 r300_flush_and_cleanup(r300, flags, fence);
118             }
119 
120             /* Revoke Hyper-Z access, so that some other process can take it. */
121             r300->rws->cs_request_feature(r300->cs, RADEON_FID_R300_HYPERZ_ACCESS,
122                                           FALSE);
123             r300->hyperz_enabled = FALSE;
124         }
125     }
126 }
127 
r300_flush_wrapped(struct pipe_context * pipe,struct pipe_fence_handle ** fence,unsigned flags)128 static void r300_flush_wrapped(struct pipe_context *pipe,
129                                struct pipe_fence_handle **fence,
130                                unsigned flags)
131 {
132     if (flags & PIPE_FLUSH_HINT_FINISH)
133         flags &= ~PIPE_FLUSH_ASYNC;
134 
135     r300_flush(pipe, flags, fence);
136 }
137 
r300_init_flush_functions(struct r300_context * r300)138 void r300_init_flush_functions(struct r300_context* r300)
139 {
140     r300->context.flush = r300_flush_wrapped;
141 }
142