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
|
/**
* \file miniglxP.h
* \brief Define replacements for some X data types and define the DRI-related
* data structures.
*
* \note Cut down version of glxclient.h.
*
*/
#ifndef _mini_GLX_client_h_
#define _mini_GLX_client_h_
#include <signal.h>
#include <linux/fb.h>
#include <GL/miniglx.h>
#include "glheader.h"
#include "mtypes.h"
#include "driver.h"
#include "dri.h"
/**
* \brief Supported pixel formats.
*/
enum PixelFormat {
PF_B8G8R8, /**< \brief 24-bit BGR */
PF_B8G8R8A8, /**< \brief 32-bit BGRA */
PF_B5G6R5, /**< \brief 16-bit BGR */
PF_B5G5R5, /**< \brief 15-bit BGR */
PF_CI8 /**< \brief 8-bit color index */
};
/**
* \brief X Visual type.
*
* \sa ::Visual, \ref datatypes.
*/
struct MiniGLXVisualRec {
/** \brief GLX visual information */
const __GLcontextModes *mode;
/** \brief pointer back to corresponding ::XVisualInfo */
XVisualInfo *visInfo;
/** \brief display handle */
Display *dpy;
/** \brief pixel format */
enum PixelFormat pixelFormat;
};
/**
* \brief X Window type.
*
* \sa ::Window, \ref datatypes.
*/
struct MiniGLXWindowRec {
Visual *visual;
/** \brief position (always 0,0) */
int x, y;
/** \brief size */
unsigned int w, h;
void *frontStart; /**< \brief start of front color buffer */
void *backStart; /**< \brief start of back color buffer */
size_t size; /**< \brief color buffer size, in bytes */
GLuint bytesPerPixel;
GLuint rowStride; /**< \brief in bytes */
GLubyte *frontBottom; /**< \brief pointer to last row */
GLubyte *backBottom; /**< \brief pointer to last row */
GLubyte *curBottom; /**< = frontBottom or backBottom */
__DRIdrawable *driDrawable;
GLuint ismapped;
};
/**
* \brief GLXContext type.
*
* \sa ::GLXContext, \ref datatypes.
*/
struct MiniGLXContextRec {
Window drawBuffer; /**< \brief drawing buffer */
Window curBuffer; /**< \brief current buffer */
VisualID vid; /**< \brief visual ID */
__DRIcontext *driContext; /**< \brief context dependent methods */
};
#define MINIGLX_BUF_SIZE 512
#define MINIGLX_MAX_SERVER_FDS 10
#define MINIGLX_MAX_CLIENT_FDS 1
#define MINIGLX_EVENT_QUEUE_SZ 16
#define MINIGLX_EVENT_QUEUE_MASK (MINIGLX_EVENT_QUEUE_SZ-1)
/**
* A connection to/from the server
*
* All information is to/from the server is buffered and then dispatched by
* __miniglx_Select() to avoid blocking the server.
*/
struct MiniGLXConnection {
int fd; /**< \brief file descriptor */
char readbuf[MINIGLX_BUF_SIZE]; /**< \brief read buffer */
char writebuf[MINIGLX_BUF_SIZE]; /**< \brief write buffer */
int readbuf_count; /**< \brief count of bytes waiting to be read */
int writebuf_count; /**< \brief count of bytes waiting to be written */
};
/**
* \brief X Display type
*
* \sa ::Display, \ref datatypes.
*/
struct MiniGLXDisplayRec {
/** \brief fixed framebuffer screen info */
struct fb_fix_screeninfo FixedInfo;
/** \brief original and current variable framebuffer screen info */
struct fb_var_screeninfo OrigVarInfo, VarInfo;
struct sigaction OrigSigUsr1;
struct sigaction OrigSigUsr2;
int OriginalVT;
int ConsoleFD; /**< \brief console TTY device file descriptor */
int FrameBufferFD; /**< \brief framebuffer device file descriptor */
int NumWindows; /**< \brief number of open windows */
Window TheWindow; /**< \brief open window - only allow one window for now */
int rotateMode;
volatile int vtSignalFlag;
volatile int haveVT; /**< \brief whether the VT is hold */
int hwActive; /**< \brief whether the hardware is active -- mimics
the variations of MiniGLXDisplayRec::haveVT */
int IsClient; /**< \brief whether it's a client or the server */
int clientID;
int nrFds; /**< \brief number of connections (usually just one for the clients) */
struct MiniGLXConnection *fd; /**< \brief connections */
struct {
int nr, head, tail;
XEvent queue[MINIGLX_EVENT_QUEUE_SZ];
} eventqueue;
/**
* \name Visuals
*
* Visuals (configs) in this screen.
*/
/*@{*/
int numModes; /**< \brief Number of modes. */
const __GLcontextModes *modes; /**< \brief Modes list pointer. */
/*@}*/
/**
* \name From __GLXdisplayPrivate
*/
/*@{*/
driCreateScreenFunc *createScreen; /**< \brief \e __driCreateScreen hook */
__DRIscreen *driScreen; /**< \brief Screen dependent methods */
void *dlHandle; /**<
* \brief handle to the client dynamic
* library
*/
/*@}*/
/**
* \brief Mini GLX specific driver hooks
*/
struct DRIDriverRec *driver;
struct DRIDriverContextRec driverContext;
/**
* \name Configuration details
*
* They are read from a configuration file by __read_config_file().
*/
/*@{*/
const char *fbdevDevice;
const char *clientDriverName;
/*@}*/
};
extern __DRIscreen *__glXFindDRIScreen(Display *dpy, int scrn);
extern Bool __glXWindowExists(Display *dpy, GLXDrawable draw);
extern int __miniglx_open_connections( Display *dpy );
extern void __miniglx_close_connections( Display *dpy );
#endif /* !_mini_GLX_client_h_ */
|
