1 /**************************************************************************
2 *
3 * Copyright 2011 Marek Olšák <maraeo@gmail.com>
4 * All Rights Reserved.
5 *
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:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
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.
25 *
26 **************************************************************************/
27
28 /*
29 * Authors:
30 * Marek Olšák <maraeo@gmail.com>
31 */
32
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"
39
40 struct st_sync_object {
41 struct gl_sync_object b;
42
43 struct pipe_fence_handle *fence;
44 };
45
46
st_new_sync_object(struct gl_context * ctx,GLenum type)47 static struct gl_sync_object * st_new_sync_object(struct gl_context *ctx,
48 GLenum type)
49 {
50 if (type == GL_SYNC_FENCE)
51 return (struct gl_sync_object*)CALLOC_STRUCT(st_sync_object);
52 else
53 return NULL;
54 }
55
st_delete_sync_object(struct gl_context * ctx,struct gl_sync_object * obj)56 static void st_delete_sync_object(struct gl_context *ctx,
57 struct gl_sync_object *obj)
58 {
59 struct pipe_screen *screen = st_context(ctx)->pipe->screen;
60 struct st_sync_object *so = (struct st_sync_object*)obj;
61
62 screen->fence_reference(screen, &so->fence, NULL);
63 FREE(so);
64 }
65
st_fence_sync(struct gl_context * ctx,struct gl_sync_object * obj,GLenum condition,GLbitfield flags)66 static void st_fence_sync(struct gl_context *ctx, struct gl_sync_object *obj,
67 GLenum condition, GLbitfield flags)
68 {
69 struct pipe_context *pipe = st_context(ctx)->pipe;
70 struct st_sync_object *so = (struct st_sync_object*)obj;
71
72 assert(condition == GL_SYNC_GPU_COMMANDS_COMPLETE && flags == 0);
73 assert(so->fence == NULL);
74
75 pipe->flush(pipe, &so->fence);
76 }
77
st_check_sync(struct gl_context * ctx,struct gl_sync_object * obj)78 static void st_check_sync(struct gl_context *ctx, struct gl_sync_object *obj)
79 {
80 struct pipe_screen *screen = st_context(ctx)->pipe->screen;
81 struct st_sync_object *so = (struct st_sync_object*)obj;
82
83 if (so->fence && screen->fence_signalled(screen, so->fence)) {
84 screen->fence_reference(screen, &so->fence, NULL);
85 so->b.StatusFlag = GL_TRUE;
86 }
87 }
88
st_client_wait_sync(struct gl_context * ctx,struct gl_sync_object * obj,GLbitfield flags,GLuint64 timeout)89 static void st_client_wait_sync(struct gl_context *ctx,
90 struct gl_sync_object *obj,
91 GLbitfield flags, GLuint64 timeout)
92 {
93 struct pipe_screen *screen = st_context(ctx)->pipe->screen;
94 struct st_sync_object *so = (struct st_sync_object*)obj;
95
96 /* We don't care about GL_SYNC_FLUSH_COMMANDS_BIT, because flush is
97 * already called when creating a fence. */
98
99 if (so->fence &&
100 screen->fence_finish(screen, so->fence, timeout)) {
101 screen->fence_reference(screen, &so->fence, NULL);
102 so->b.StatusFlag = GL_TRUE;
103 }
104 }
105
st_server_wait_sync(struct gl_context * ctx,struct gl_sync_object * obj,GLbitfield flags,GLuint64 timeout)106 static void st_server_wait_sync(struct gl_context *ctx,
107 struct gl_sync_object *obj,
108 GLbitfield flags, GLuint64 timeout)
109 {
110 /* NO-OP.
111 * Neither Gallium nor DRM interfaces support blocking on the GPU. */
112 }
113
st_init_syncobj_functions(struct dd_function_table * functions)114 void st_init_syncobj_functions(struct dd_function_table *functions)
115 {
116 functions->NewSyncObject = st_new_sync_object;
117 functions->FenceSync = st_fence_sync;
118 functions->DeleteSyncObject = st_delete_sync_object;
119 functions->CheckSync = st_check_sync;
120 functions->ClientWaitSync = st_client_wait_sync;
121 functions->ServerWaitSync = st_server_wait_sync;
122 }
123