summaryrefslogtreecommitdiffstats
path: root/src/loader/loader_dri3_helper.h
blob: 5b8fd1d24cad4ab928f0841694d9998b181ec774 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
/*
 * Copyright © 2013 Keith Packard
 * Copyright © 2015 Boyan Ding
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that copyright
 * notice and this permission notice appear in supporting documentation, and
 * that the name of the copyright holders not be used in advertising or
 * publicity pertaining to distribution of the software without specific,
 * written prior permission.  The copyright holders make no representations
 * about the suitability of this software for any purpose.  It is provided "as
 * is" without express or implied warranty.
 *
 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 * OF THIS SOFTWARE.
 */

#ifndef LOADER_DRI3_HEADER_H
#define LOADER_DRI3_HEADER_H

#include <stdbool.h>
#include <stdint.h>

#include <xcb/xcb.h>
#include <xcb/dri3.h>
#include <xcb/present.h>

#include <GL/gl.h>
#include <GL/internal/dri_interface.h>

enum loader_dri3_buffer_type {
   loader_dri3_buffer_back = 0,
   loader_dri3_buffer_front = 1
};

struct loader_dri3_buffer {
   __DRIimage   *image;
   __DRIimage   *linear_buffer;
   uint32_t     pixmap;

   /* Synchronization between the client and X server is done using an
    * xshmfence that is mapped into an X server SyncFence. This lets the
    * client check whether the X server is done using a buffer with a simple
    * xshmfence call, rather than going to read X events from the wire.
    *
    * However, we can only wait for one xshmfence to be triggered at a time,
    * so we need to know *which* buffer is going to be idle next. We do that
    * by waiting for a PresentIdleNotify event. When that event arrives, the
    * 'busy' flag gets cleared and the client knows that the fence has been
    * triggered, and that the wait call will not block.
    */

   uint32_t     sync_fence;     /* XID of X SyncFence object */
   struct xshmfence *shm_fence; /* pointer to xshmfence object */
   bool         busy;           /* Set on swap, cleared on IdleNotify */
   bool         own_pixmap;     /* We allocated the pixmap ID, free on destroy */

   uint32_t     size;
   uint32_t     pitch;
   uint32_t     cpp;
   uint32_t     flags;
   uint32_t     width, height;
   uint64_t     last_swap;

   enum loader_dri3_buffer_type        buffer_type;
};


#define LOADER_DRI3_MAX_BACK   4
#define LOADER_DRI3_BACK_ID(i) (i)
#define LOADER_DRI3_FRONT_ID   (LOADER_DRI3_MAX_BACK)

static inline int
loader_dri3_pixmap_buf_id(enum loader_dri3_buffer_type buffer_type)
{
   if (buffer_type == loader_dri3_buffer_back)
      return LOADER_DRI3_BACK_ID(0);
   else
      return LOADER_DRI3_FRONT_ID;
}

struct loader_dri3_extensions {
   const __DRIcoreExtension *core;
   const __DRIimageDriverExtension *image_driver;
   const __DRI2flushExtension *flush;
   const __DRI2configQueryExtension *config;
   const __DRItexBufferExtension *tex_buffer;
   const __DRIimageExtension *image;
};

struct loader_dri3_drawable;

struct loader_dri3_vtable {
   int (*get_swap_interval)(struct loader_dri3_drawable *);
   int (*clamp_swap_interval)(struct loader_dri3_drawable *, int);
   void (*set_swap_interval)(struct loader_dri3_drawable *, int);
   void (*set_drawable_size)(struct loader_dri3_drawable *, int, int);
   bool (*in_current_context)(struct loader_dri3_drawable *);
   __DRIcontext *(*get_dri_context)(struct loader_dri3_drawable *);
   void (*flush_drawable)(struct loader_dri3_drawable *, unsigned);
   void (*show_fps)(struct loader_dri3_drawable *, uint64_t);
};

#define LOADER_DRI3_NUM_BUFFERS (1 + LOADER_DRI3_MAX_BACK)

struct loader_dri3_drawable {
   xcb_connection_t *conn;
   __DRIdrawable *dri_drawable;
   xcb_drawable_t drawable;
   int width;
   int height;
   int depth;
   uint8_t have_back;
   uint8_t have_fake_front;
   uint8_t is_pixmap;
   uint8_t flipping;

   /* Information about the GPU owning the buffer */
   __DRIscreen *dri_screen;
   bool is_different_gpu;

   /* Present extension capabilities
    */
   uint32_t present_capabilities;

   /* SBC numbers are tracked by using the serial numbers
    * in the present request and complete events
    */
   uint64_t send_sbc;
   uint64_t recv_sbc;

   /* Last received UST/MSC values for pixmap present complete */
   uint64_t ust, msc;

   /* Last received UST/MSC values from present notify msc event */
   uint64_t notify_ust, notify_msc;

   /* Serial numbers for tracking wait_for_msc events */
   uint32_t send_msc_serial;
   uint32_t recv_msc_serial;

   struct loader_dri3_buffer *buffers[LOADER_DRI3_NUM_BUFFERS];
   int cur_back;
   int num_back;

   uint32_t *stamp;

   xcb_present_event_t eid;
   xcb_gcontext_t gc;
   xcb_special_event_t *special_event;

   bool first_init;

   struct loader_dri3_extensions *ext;
   struct loader_dri3_vtable *vtable;
};

void
loader_dri3_set_swap_interval(struct loader_dri3_drawable *draw,
                              int interval);

void
loader_dri3_drawable_fini(struct loader_dri3_drawable *draw);

int
loader_dri3_drawable_init(xcb_connection_t *conn,
                          xcb_drawable_t drawable,
                          __DRIscreen *dri_screen,
                          bool is_different_gpu,
                          const __DRIconfig *dri_config,
                          struct loader_dri3_extensions *ext,
                          struct loader_dri3_vtable *vtable,
                          struct loader_dri3_drawable*);

bool loader_dri3_wait_for_msc(struct loader_dri3_drawable *draw,
                              int64_t target_msc,
                              int64_t divisor, int64_t remainder,
                              int64_t *ust, int64_t *msc, int64_t *sbc);

int64_t
loader_dri3_swap_buffers_msc(struct loader_dri3_drawable *draw,
                             int64_t target_msc, int64_t divisor,
                             int64_t remainder, unsigned flush_flags,
                             bool force_copy);

int
loader_dri3_wait_for_sbc(struct loader_dri3_drawable *draw,
                         int64_t target_sbc, int64_t *ust,
                         int64_t *msc, int64_t *sbc);

int loader_dri3_query_buffer_age(struct loader_dri3_drawable *draw);

void
loader_dri3_flush(struct loader_dri3_drawable *draw,
                  unsigned flags,
                  enum __DRI2throttleReason throttle_reason);

void
loader_dri3_copy_sub_buffer(struct loader_dri3_drawable *draw,
                            int x, int y,
                            int width, int height,
                            bool flush);

void
loader_dri3_copy_drawable(struct loader_dri3_drawable *draw,
                          xcb_drawable_t dest,
                          xcb_drawable_t src);

void
loader_dri3_wait_x(struct loader_dri3_drawable *draw);

void
loader_dri3_wait_gl(struct loader_dri3_drawable *draw);

int loader_dri3_open(xcb_connection_t *conn,
                     xcb_window_t root,
                     uint32_t provider);

__DRIimage *
loader_dri3_create_image(xcb_connection_t *c,
                         xcb_dri3_buffer_from_pixmap_reply_t *bp_reply,
                         unsigned int format,
                         __DRIscreen *dri_screen,
                         const __DRIimageExtension *image,
                         void *loaderPrivate);

int
loader_dri3_get_buffers(__DRIdrawable *driDrawable,
                        unsigned int format,
                        uint32_t *stamp,
                        void *loaderPrivate,
                        uint32_t buffer_mask,
                        struct __DRIimageList *buffers);

#endif