1 /**************************************************************************
3 * Copyright 2011 Marek Olšák <maraeo@gmail.com>
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * Marek Olšák <maraeo@gmail.com>
33 #include "main/glheader.h"
34 #include "main/macros.h"
35 #include "pipe/p_context.h"
36 #include "pipe/p_screen.h"
37 #include "st_context.h"
38 #include "st_cb_syncobj.h"
40 struct st_sync_object
{
41 struct gl_sync_object b
;
43 struct pipe_fence_handle
*fence
;
47 static struct gl_sync_object
* st_new_sync_object(struct gl_context
*ctx
,
50 if (type
== GL_SYNC_FENCE
)
51 return (struct gl_sync_object
*)CALLOC_STRUCT(st_sync_object
);
56 static void st_delete_sync_object(struct gl_context
*ctx
,
57 struct gl_sync_object
*obj
)
59 struct pipe_screen
*screen
= st_context(ctx
)->pipe
->screen
;
60 struct st_sync_object
*so
= (struct st_sync_object
*)obj
;
62 screen
->fence_reference(screen
, &so
->fence
, NULL
);
67 static void st_fence_sync(struct gl_context
*ctx
, struct gl_sync_object
*obj
,
68 GLenum condition
, GLbitfield flags
)
70 struct pipe_context
*pipe
= st_context(ctx
)->pipe
;
71 struct st_sync_object
*so
= (struct st_sync_object
*)obj
;
73 assert(condition
== GL_SYNC_GPU_COMMANDS_COMPLETE
&& flags
== 0);
74 assert(so
->fence
== NULL
);
76 pipe
->flush(pipe
, &so
->fence
, PIPE_FLUSH_DEFERRED
);
79 static void st_check_sync(struct gl_context
*ctx
, struct gl_sync_object
*obj
)
81 struct pipe_context
*pipe
= st_context(ctx
)->pipe
;
82 struct pipe_screen
*screen
= pipe
->screen
;
83 struct st_sync_object
*so
= (struct st_sync_object
*)obj
;
85 /* If the fence doesn't exist, assume it's signalled. */
87 so
->b
.StatusFlag
= GL_TRUE
;
91 if (screen
->fence_finish(screen
, pipe
, so
->fence
, 0)) {
92 screen
->fence_reference(screen
, &so
->fence
, NULL
);
93 so
->b
.StatusFlag
= GL_TRUE
;
97 static void st_client_wait_sync(struct gl_context
*ctx
,
98 struct gl_sync_object
*obj
,
99 GLbitfield flags
, GLuint64 timeout
)
101 struct pipe_context
*pipe
= st_context(ctx
)->pipe
;
102 struct pipe_screen
*screen
= pipe
->screen
;
103 struct st_sync_object
*so
= (struct st_sync_object
*)obj
;
105 /* If the fence doesn't exist, assume it's signalled. */
107 so
->b
.StatusFlag
= GL_TRUE
;
111 /* Section 4.1.2 of OpenGL 4.5 (Compatibility Profile) says:
112 * [...] if ClientWaitSync is called and all of the following are true:
113 * - the SYNC_FLUSH_COMMANDS_BIT bit is set in flags,
114 * - sync is unsignaled when ClientWaitSync is called,
115 * - and the calls to ClientWaitSync and FenceSync were issued from
117 * then the GL will behave as if the equivalent of Flush were inserted
118 * immediately after the creation of sync.
120 * Assume GL_SYNC_FLUSH_COMMANDS_BIT is always set, because applications
124 screen
->fence_finish(screen
, pipe
, so
->fence
, timeout
)) {
125 screen
->fence_reference(screen
, &so
->fence
, NULL
);
126 so
->b
.StatusFlag
= GL_TRUE
;
130 static void st_server_wait_sync(struct gl_context
*ctx
,
131 struct gl_sync_object
*obj
,
132 GLbitfield flags
, GLuint64 timeout
)
135 * Neither Gallium nor DRM interfaces support blocking on the GPU. */
138 void st_init_syncobj_functions(struct dd_function_table
*functions
)
140 functions
->NewSyncObject
= st_new_sync_object
;
141 functions
->FenceSync
= st_fence_sync
;
142 functions
->DeleteSyncObject
= st_delete_sync_object
;
143 functions
->CheckSync
= st_check_sync
;
144 functions
->ClientWaitSync
= st_client_wait_sync
;
145 functions
->ServerWaitSync
= st_server_wait_sync
;