2 * Mesa 3-D graphics library
5 * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
28 #include <sys/types.h>
31 #include <X11/Xlibint.h>
32 #include <X11/extensions/XShm.h>
34 #include "util/u_memory.h"
37 #include "x11_screen.h"
42 /* dummy base class */
43 struct __GLXDRIdisplayRec base
;
49 * This is used to fetch GLX visuals/fbconfigs. It steals code from GLX.
50 * It might be better to rewrite the part in Xlib or XCB.
52 __GLXdisplayPrivate
*glx_dpy
;
54 int dri_major
, dri_minor
;
59 x11_drawable_invalidate_buffers dri_invalidate_buffers
;
65 /* cached values for x11_drawable_get_depth */
66 Drawable last_drawable
;
67 unsigned int last_depth
;
72 * Create a X11 screen.
75 x11_screen_create(Display
*dpy
, int screen
)
77 struct x11_screen
*xscr
;
79 if (screen
>= ScreenCount(dpy
))
82 xscr
= CALLOC_STRUCT(x11_screen
);
85 xscr
->number
= screen
;
94 * Destroy a X11 screen.
97 x11_screen_destroy(struct x11_screen
*xscr
)
99 if (xscr
->dri_fd
>= 0)
101 if (xscr
->dri_driver
)
102 Xfree(xscr
->dri_driver
);
103 if (xscr
->dri_device
)
104 Xfree(xscr
->dri_device
);
106 /* xscr->glx_dpy will be destroyed with the X display */
108 xscr
->glx_dpy
->dri2Display
= NULL
;
111 XFree(xscr
->visuals
);
116 x11_screen_init_dri2(struct x11_screen
*xscr
)
118 if (xscr
->dri_major
< 0) {
119 int eventBase
, errorBase
;
121 if (!DRI2QueryExtension(xscr
->dpy
, &eventBase
, &errorBase
) ||
122 !DRI2QueryVersion(xscr
->dpy
, &xscr
->dri_major
, &xscr
->dri_minor
))
123 xscr
->dri_major
= -1;
125 return (xscr
->dri_major
>= 0);
129 x11_screen_init_glx(struct x11_screen
*xscr
)
132 xscr
->glx_dpy
= __glXInitialize(xscr
->dpy
);
133 return (xscr
->glx_dpy
!= NULL
);
137 * Return true if the screen supports the extension.
140 x11_screen_support(struct x11_screen
*xscr
, enum x11_screen_extension ext
)
142 boolean supported
= FALSE
;
145 case X11_SCREEN_EXTENSION_XSHM
:
146 supported
= XShmQueryExtension(xscr
->dpy
);
148 case X11_SCREEN_EXTENSION_GLX
:
149 supported
= x11_screen_init_glx(xscr
);
151 case X11_SCREEN_EXTENSION_DRI2
:
152 supported
= x11_screen_init_dri2(xscr
);
162 * Return the X visuals.
165 x11_screen_get_visuals(struct x11_screen
*xscr
, int *num_visuals
)
167 if (!xscr
->visuals
) {
168 XVisualInfo vinfo_template
;
169 vinfo_template
.screen
= xscr
->number
;
170 xscr
->visuals
= XGetVisualInfo(xscr
->dpy
, VisualScreenMask
,
171 &vinfo_template
, &xscr
->num_visuals
);
175 *num_visuals
= xscr
->num_visuals
;
176 return xscr
->visuals
;
180 * Return the GLX fbconfigs.
182 const __GLcontextModes
*
183 x11_screen_get_glx_configs(struct x11_screen
*xscr
)
185 return (x11_screen_init_glx(xscr
))
186 ? xscr
->glx_dpy
->screenConfigs
[xscr
->number
].configs
191 * Return the GLX visuals.
193 const __GLcontextModes
*
194 x11_screen_get_glx_visuals(struct x11_screen
*xscr
)
196 return (x11_screen_init_glx(xscr
))
197 ? xscr
->glx_dpy
->screenConfigs
[xscr
->number
].visuals
202 * Probe the screen for the DRI2 driver name.
205 x11_screen_probe_dri2(struct x11_screen
*xscr
, int *major
, int *minor
)
207 if (!x11_screen_init_dri2(xscr
))
210 /* get the driver name and the device name */
211 if (!xscr
->dri_driver
) {
212 if (!DRI2Connect(xscr
->dpy
, RootWindow(xscr
->dpy
, xscr
->number
),
213 &xscr
->dri_driver
, &xscr
->dri_device
))
214 xscr
->dri_driver
= xscr
->dri_device
= NULL
;
217 *major
= xscr
->dri_major
;
219 *minor
= xscr
->dri_minor
;
221 return xscr
->dri_driver
;
225 * Enable DRI2 and returns the file descriptor of the DRM device. The file
226 * descriptor will be closed automatically when the screen is destoryed.
229 x11_screen_enable_dri2(struct x11_screen
*xscr
,
230 x11_drawable_invalidate_buffers invalidate_buffers
,
233 if (xscr
->dri_fd
< 0) {
237 /* get the driver name and the device name first */
238 if (!x11_screen_probe_dri2(xscr
, NULL
, NULL
))
241 fd
= open(xscr
->dri_device
, O_RDWR
);
243 _eglLog(_EGL_WARNING
, "failed to open %s", xscr
->dri_device
);
247 memset(&magic
, 0, sizeof(magic
));
248 if (drmGetMagic(fd
, &magic
)) {
249 _eglLog(_EGL_WARNING
, "failed to get magic");
254 if (!DRI2Authenticate(xscr
->dpy
,
255 RootWindow(xscr
->dpy
, xscr
->number
), magic
)) {
256 _eglLog(_EGL_WARNING
, "failed to authenticate magic");
261 if (!x11_screen_init_glx(xscr
)) {
262 _eglLog(_EGL_WARNING
, "failed to initialize GLX");
266 if (xscr
->glx_dpy
->dri2Display
) {
267 _eglLog(_EGL_WARNING
,
268 "display is already managed by another x11 screen");
273 xscr
->glx_dpy
->dri2Display
= (__GLXDRIdisplay
*) xscr
;
274 xscr
->dri_invalidate_buffers
= invalidate_buffers
;
275 xscr
->dri_user_data
= user_data
;
284 * Create/Destroy the DRI drawable.
287 x11_drawable_enable_dri2(struct x11_screen
*xscr
,
288 Drawable drawable
, boolean on
)
291 DRI2CreateDrawable(xscr
->dpy
, drawable
);
293 DRI2DestroyDrawable(xscr
->dpy
, drawable
);
297 * Copy between buffers of the DRI2 drawable.
300 x11_drawable_copy_buffers(struct x11_screen
*xscr
, Drawable drawable
,
301 int x
, int y
, int width
, int height
,
302 int src_buf
, int dst_buf
)
305 XserverRegion region
;
310 rect
.height
= height
;
312 region
= XFixesCreateRegion(xscr
->dpy
, &rect
, 1);
313 DRI2CopyRegion(xscr
->dpy
, drawable
, region
, dst_buf
, src_buf
);
314 XFixesDestroyRegion(xscr
->dpy
, region
);
318 * Get the buffers of the DRI2 drawable. The returned array should be freed.
320 struct x11_drawable_buffer
*
321 x11_drawable_get_buffers(struct x11_screen
*xscr
, Drawable drawable
,
322 int *width
, int *height
, unsigned int *attachments
,
323 boolean with_format
, int num_ins
, int *num_outs
)
325 DRI2Buffer
*dri2bufs
;
328 dri2bufs
= DRI2GetBuffersWithFormat(xscr
->dpy
, drawable
, width
, height
,
329 attachments
, num_ins
, num_outs
);
331 dri2bufs
= DRI2GetBuffers(xscr
->dpy
, drawable
, width
, height
,
332 attachments
, num_ins
, num_outs
);
334 return (struct x11_drawable_buffer
*) dri2bufs
;
338 * Return the depth of a drawable.
340 * Unlike other drawable functions, the drawable needs not be a DRI2 drawable.
343 x11_drawable_get_depth(struct x11_screen
*xscr
, Drawable drawable
)
347 if (drawable
!= xscr
->last_drawable
) {
350 unsigned int w
, h
, border
;
353 ok
= XGetGeometry(xscr
->dpy
, drawable
, &root
,
354 &x
, &y
, &w
, &h
, &border
, &depth
);
358 xscr
->last_drawable
= drawable
;
359 xscr
->last_depth
= depth
;
362 depth
= xscr
->last_depth
;
369 * Create a mode list of the given size.
372 x11_context_modes_create(unsigned count
)
374 const size_t size
= sizeof(__GLcontextModes
);
375 __GLcontextModes
*base
= NULL
;
376 __GLcontextModes
**next
;
380 for (i
= 0; i
< count
; i
++) {
381 *next
= (__GLcontextModes
*) CALLOC(1, size
);
383 x11_context_modes_destroy(base
);
387 next
= &((*next
)->next
);
394 * Destroy a mode list.
397 x11_context_modes_destroy(__GLcontextModes
*modes
)
399 while (modes
!= NULL
) {
400 __GLcontextModes
*next
= modes
->next
;
407 * Return the number of the modes in the mode list.
410 x11_context_modes_count(const __GLcontextModes
*modes
)
412 const __GLcontextModes
*mode
;
414 for (mode
= modes
; mode
; mode
= mode
->next
)
420 * This is called from src/glx/dri2.c.
423 dri2InvalidateBuffers(Display
*dpy
, XID drawable
)
425 __GLXdisplayPrivate
*priv
= __glXInitialize(dpy
);
426 struct x11_screen
*xscr
= NULL
;
428 if (priv
&& priv
->dri2Display
)
429 xscr
= (struct x11_screen
*) priv
->dri2Display
;
430 if (!xscr
|| !xscr
->dri_invalidate_buffers
)
433 xscr
->dri_invalidate_buffers(xscr
, drawable
, xscr
->dri_user_data
);