2 * Copyright © 2013 Keith Packard
3 * Copyright © 2015 Boyan Ding
5 * Permission to use, copy, modify, distribute, and sell this software and its
6 * documentation for any purpose is hereby granted without fee, provided that
7 * the above copyright notice appear in all copies and that both that copyright
8 * notice and this permission notice appear in supporting documentation, and
9 * that the name of the copyright holders not be used in advertising or
10 * publicity pertaining to distribution of the software without specific,
11 * written prior permission. The copyright holders make no representations
12 * about the suitability of this software for any purpose. It is provided "as
13 * is" without express or implied warranty.
15 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
16 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
17 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
18 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
19 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
20 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 #ifndef LOADER_DRI3_HEADER_H
25 #define LOADER_DRI3_HEADER_H
31 #include <xcb/present.h>
34 #include <GL/internal/dri_interface.h>
36 enum loader_dri3_buffer_type
{
37 loader_dri3_buffer_back
= 0,
38 loader_dri3_buffer_front
= 1
41 struct loader_dri3_buffer
{
43 __DRIimage
*linear_buffer
;
46 /* Synchronization between the client and X server is done using an
47 * xshmfence that is mapped into an X server SyncFence. This lets the
48 * client check whether the X server is done using a buffer with a simple
49 * xshmfence call, rather than going to read X events from the wire.
51 * However, we can only wait for one xshmfence to be triggered at a time,
52 * so we need to know *which* buffer is going to be idle next. We do that
53 * by waiting for a PresentIdleNotify event. When that event arrives, the
54 * 'busy' flag gets cleared and the client knows that the fence has been
55 * triggered, and that the wait call will not block.
58 uint32_t sync_fence
; /* XID of X SyncFence object */
59 struct xshmfence
*shm_fence
; /* pointer to xshmfence object */
60 bool busy
; /* Set on swap, cleared on IdleNotify */
61 bool own_pixmap
; /* We allocated the pixmap ID, free on destroy */
67 uint32_t width
, height
;
70 enum loader_dri3_buffer_type buffer_type
;
74 #define LOADER_DRI3_MAX_BACK 4
75 #define LOADER_DRI3_BACK_ID(i) (i)
76 #define LOADER_DRI3_FRONT_ID (LOADER_DRI3_MAX_BACK)
79 loader_dri3_pixmap_buf_id(enum loader_dri3_buffer_type buffer_type
)
81 if (buffer_type
== loader_dri3_buffer_back
)
82 return LOADER_DRI3_BACK_ID(0);
84 return LOADER_DRI3_FRONT_ID
;
87 struct loader_dri3_extensions
{
88 const __DRIcoreExtension
*core
;
89 const __DRIimageDriverExtension
*image_driver
;
90 const __DRI2flushExtension
*flush
;
91 const __DRI2configQueryExtension
*config
;
92 const __DRItexBufferExtension
*tex_buffer
;
93 const __DRIimageExtension
*image
;
96 struct loader_dri3_drawable
;
98 struct loader_dri3_vtable
{
99 int (*get_swap_interval
)(struct loader_dri3_drawable
*);
100 int (*clamp_swap_interval
)(struct loader_dri3_drawable
*, int);
101 void (*set_swap_interval
)(struct loader_dri3_drawable
*, int);
102 void (*set_drawable_size
)(struct loader_dri3_drawable
*, int, int);
103 bool (*in_current_context
)(struct loader_dri3_drawable
*);
104 __DRIcontext
*(*get_dri_context
)(struct loader_dri3_drawable
*);
105 void (*flush_drawable
)(struct loader_dri3_drawable
*, unsigned);
106 void (*show_fps
)(struct loader_dri3_drawable
*, uint64_t);
109 #define LOADER_DRI3_NUM_BUFFERS (1 + LOADER_DRI3_MAX_BACK)
111 struct loader_dri3_drawable
{
112 xcb_connection_t
*conn
;
113 __DRIdrawable
*dri_drawable
;
114 xcb_drawable_t drawable
;
119 uint8_t have_fake_front
;
123 /* Information about the GPU owning the buffer */
124 __DRIscreen
*dri_screen
;
125 bool is_different_gpu
;
127 /* Present extension capabilities
129 uint32_t present_capabilities
;
131 /* SBC numbers are tracked by using the serial numbers
132 * in the present request and complete events
137 /* Last received UST/MSC values for pixmap present complete */
140 /* Last received UST/MSC values from present notify msc event */
141 uint64_t notify_ust
, notify_msc
;
143 /* Serial numbers for tracking wait_for_msc events */
144 uint32_t send_msc_serial
;
145 uint32_t recv_msc_serial
;
147 struct loader_dri3_buffer
*buffers
[LOADER_DRI3_NUM_BUFFERS
];
153 xcb_present_event_t eid
;
155 xcb_special_event_t
*special_event
;
159 struct loader_dri3_extensions
*ext
;
160 struct loader_dri3_vtable
*vtable
;
164 loader_dri3_set_swap_interval(struct loader_dri3_drawable
*draw
,
168 loader_dri3_drawable_fini(struct loader_dri3_drawable
*draw
);
171 loader_dri3_drawable_init(xcb_connection_t
*conn
,
172 xcb_drawable_t drawable
,
173 __DRIscreen
*dri_screen
,
174 bool is_different_gpu
,
175 const __DRIconfig
*dri_config
,
176 struct loader_dri3_extensions
*ext
,
177 struct loader_dri3_vtable
*vtable
,
178 struct loader_dri3_drawable
*);
180 bool loader_dri3_wait_for_msc(struct loader_dri3_drawable
*draw
,
182 int64_t divisor
, int64_t remainder
,
183 int64_t *ust
, int64_t *msc
, int64_t *sbc
);
186 loader_dri3_swap_buffers_msc(struct loader_dri3_drawable
*draw
,
187 int64_t target_msc
, int64_t divisor
,
188 int64_t remainder
, unsigned flush_flags
,
192 loader_dri3_wait_for_sbc(struct loader_dri3_drawable
*draw
,
193 int64_t target_sbc
, int64_t *ust
,
194 int64_t *msc
, int64_t *sbc
);
196 int loader_dri3_query_buffer_age(struct loader_dri3_drawable
*draw
);
199 loader_dri3_flush(struct loader_dri3_drawable
*draw
,
201 enum __DRI2throttleReason throttle_reason
);
204 loader_dri3_copy_sub_buffer(struct loader_dri3_drawable
*draw
,
206 int width
, int height
,
210 loader_dri3_copy_drawable(struct loader_dri3_drawable
*draw
,
215 loader_dri3_wait_x(struct loader_dri3_drawable
*draw
);
218 loader_dri3_wait_gl(struct loader_dri3_drawable
*draw
);
220 int loader_dri3_open(xcb_connection_t
*conn
,
225 loader_dri3_get_buffers(__DRIdrawable
*driDrawable
,
229 uint32_t buffer_mask
,
230 struct __DRIimageList
*buffers
);