2 * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
3 * Copyright © 2008 Red Hat, Inc.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Soft-
7 * ware"), to deal in the Software without restriction, including without
8 * limitation the rights to use, copy, modify, merge, publish, distribute,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, provided that the above copyright
11 * notice(s) and this permission notice appear in all copies of the Soft-
12 * ware and that both the above copyright notice(s) and this permission
13 * notice appear in supporting documentation.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
17 * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
18 * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
19 * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
20 * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
21 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
22 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
23 * MANCE OF THIS SOFTWARE.
25 * Except as contained in this notice, the name of a copyright holder shall
26 * not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization of
28 * the copyright holder.
31 * Kevin E. Martin <kevin@precisioninsight.com>
32 * Brian Paul <brian@precisioninsight.com>
33 * Kristian Høgsberg (krh@redhat.com)
36 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
41 #include "glxclient.h"
42 #include "dri_common.h"
53 dri_message(int level
, const char *f
, ...)
56 int threshold
= _LOADER_WARNING
;
57 const char *libgl_debug
;
59 libgl_debug
= getenv("LIBGL_DEBUG");
61 if (strstr(libgl_debug
, "quiet"))
62 threshold
= _LOADER_FATAL
;
63 else if (strstr(libgl_debug
, "verbose"))
64 threshold
= _LOADER_DEBUG
;
67 /* Note that the _LOADER_* levels are lower numbers for more severe. */
68 if (level
<= threshold
) {
69 fprintf(stderr
, "libGL%s: ", level
<= _LOADER_WARNING
? " error" : "");
71 vfprintf(stderr
, f
, args
);
77 #define GL_LIB_NAME "libGL.so.1"
80 #ifndef DEFAULT_DRIVER_DIR
81 /* this is normally defined in Mesa/configs/default with DRI_DRIVER_SEARCH_PATH */
82 #define DEFAULT_DRIVER_DIR "/usr/local/lib/dri"
86 * Try to \c dlopen the named driver.
88 * This function adds the "_dri.so" suffix to the driver name and searches the
89 * directories specified by the \c LIBGL_DRIVERS_PATH environment variable in
90 * order to find the driver.
92 * \param driverName - a name like "i965", "radeon", "nouveau", etc.
95 * A handle from \c dlopen, or \c NULL if driver file not found.
98 driOpenDriver(const char *driverName
)
100 void *glhandle
, *handle
;
101 const char *libPaths
, *p
, *next
;
102 char realDriverName
[200];
105 /* Attempt to make sure libGL symbols will be visible to the driver */
106 glhandle
= dlopen(GL_LIB_NAME
, RTLD_NOW
| RTLD_GLOBAL
);
109 if (geteuid() == getuid()) {
110 /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
111 libPaths
= getenv("LIBGL_DRIVERS_PATH");
113 libPaths
= getenv("LIBGL_DRIVERS_DIR"); /* deprecated */
115 if (libPaths
== NULL
)
116 libPaths
= DEFAULT_DRIVER_DIR
;
119 for (p
= libPaths
; *p
; p
= next
) {
120 next
= strchr(p
, ':');
131 snprintf(realDriverName
, sizeof realDriverName
,
132 "%.*s/tls/%s_dri.so", len
, p
, driverName
);
133 InfoMessageF("OpenDriver: trying %s\n", realDriverName
);
134 handle
= dlopen(realDriverName
, RTLD_NOW
| RTLD_GLOBAL
);
137 if (handle
== NULL
) {
138 snprintf(realDriverName
, sizeof realDriverName
,
139 "%.*s/%s_dri.so", len
, p
, driverName
);
140 InfoMessageF("OpenDriver: trying %s\n", realDriverName
);
141 handle
= dlopen(realDriverName
, RTLD_NOW
| RTLD_GLOBAL
);
147 InfoMessageF("dlopen %s failed (%s)\n", realDriverName
, dlerror());
151 ErrorMessageF("unable to load driver: %s_dri.so\n", driverName
);
159 _X_HIDDEN
const __DRIextension
**
160 driGetDriverExtensions(void *handle
, const char *driver_name
)
162 const __DRIextension
**extensions
= NULL
;
163 const __DRIextension
**(*get_extensions
)(void);
164 char *get_extensions_name
= loader_get_extensions_name(driver_name
);
166 if (get_extensions_name
) {
167 get_extensions
= dlsym(handle
, get_extensions_name
);
168 if (get_extensions
) {
169 free(get_extensions_name
);
170 return get_extensions();
172 InfoMessageF("driver does not expose %s(): %s\n",
173 get_extensions_name
, dlerror());
174 free(get_extensions_name
);
178 extensions
= dlsym(handle
, __DRI_DRIVER_EXTENSIONS
);
179 if (extensions
== NULL
) {
180 ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
188 __driGetMSCRate(__DRIdrawable
*draw
,
189 int32_t * numerator
, int32_t * denominator
,
192 __GLXDRIdrawable
*glxDraw
= loaderPrivate
;
194 return __glxGetMscRate(glxDraw
->psc
, numerator
, denominator
);
197 _X_HIDDEN
const __DRIsystemTimeExtension systemTimeExtension
= {
198 .base
= {__DRI_SYSTEM_TIME
, 1 },
200 .getUST
= __glXGetUST
,
201 .getMSCRate
= __driGetMSCRate
204 #define __ATTRIB(attrib, field) \
205 { attrib, offsetof(struct glx_config, field) }
209 unsigned int attrib
, offset
;
211 __ATTRIB(__DRI_ATTRIB_BUFFER_SIZE
, rgbBits
),
212 __ATTRIB(__DRI_ATTRIB_LEVEL
, level
),
213 __ATTRIB(__DRI_ATTRIB_RED_SIZE
, redBits
),
214 __ATTRIB(__DRI_ATTRIB_GREEN_SIZE
, greenBits
),
215 __ATTRIB(__DRI_ATTRIB_BLUE_SIZE
, blueBits
),
216 __ATTRIB(__DRI_ATTRIB_ALPHA_SIZE
, alphaBits
),
217 __ATTRIB(__DRI_ATTRIB_DEPTH_SIZE
, depthBits
),
218 __ATTRIB(__DRI_ATTRIB_STENCIL_SIZE
, stencilBits
),
219 __ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE
, accumRedBits
),
220 __ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE
, accumGreenBits
),
221 __ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE
, accumBlueBits
),
222 __ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE
, accumAlphaBits
),
223 __ATTRIB(__DRI_ATTRIB_SAMPLE_BUFFERS
, sampleBuffers
),
224 __ATTRIB(__DRI_ATTRIB_SAMPLES
, samples
),
225 __ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER
, doubleBufferMode
),
226 __ATTRIB(__DRI_ATTRIB_STEREO
, stereoMode
),
227 __ATTRIB(__DRI_ATTRIB_AUX_BUFFERS
, numAuxBuffers
),
229 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_TYPE
, transparentPixel
),
230 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_INDEX_VALUE
, transparentIndex
),
231 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_RED_VALUE
, transparentRed
),
232 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_GREEN_VALUE
, transparentGreen
),
233 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_BLUE_VALUE
, transparentBlue
),
234 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE
, transparentAlpha
),
235 __ATTRIB(__DRI_ATTRIB_RED_MASK
, redMask
),
236 __ATTRIB(__DRI_ATTRIB_GREEN_MASK
, greenMask
),
237 __ATTRIB(__DRI_ATTRIB_BLUE_MASK
, blueMask
),
238 __ATTRIB(__DRI_ATTRIB_ALPHA_MASK
, alphaMask
),
240 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_WIDTH
, maxPbufferWidth
),
241 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_HEIGHT
, maxPbufferHeight
),
242 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_PIXELS
, maxPbufferPixels
),
243 __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH
, optimalPbufferWidth
),
244 __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT
, optimalPbufferHeight
),
245 __ATTRIB(__DRI_ATTRIB_SWAP_METHOD
, swapMethod
),
246 __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB
, bindToTextureRgb
),
247 __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA
, bindToTextureRgba
),
248 __ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE
,
249 bindToMipmapTexture
),
250 __ATTRIB(__DRI_ATTRIB_YINVERTED
, yInverted
),
251 __ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE
, sRGBCapable
)
255 scalarEqual(struct glx_config
*mode
, unsigned int attrib
, unsigned int value
)
257 unsigned glxValue
, i
;
259 for (i
= 0; i
< ARRAY_SIZE(attribMap
); i
++)
260 if (attribMap
[i
].attrib
== attrib
) {
261 glxValue
= *(unsigned int *) ((char *) mode
+ attribMap
[i
].offset
);
262 return glxValue
== GLX_DONT_CARE
|| glxValue
== value
;
265 return GL_TRUE
; /* Is a non-existing attribute equal to value? */
269 driConfigEqual(const __DRIcoreExtension
*core
,
270 struct glx_config
*config
, const __DRIconfig
*driConfig
)
272 unsigned int attrib
, value
, glxValue
;
276 while (core
->indexConfigAttrib(driConfig
, i
++, &attrib
, &value
)) {
278 case __DRI_ATTRIB_RENDER_TYPE
:
280 if (value
& __DRI_ATTRIB_RGBA_BIT
) {
281 glxValue
|= GLX_RGBA_BIT
;
283 if (value
& __DRI_ATTRIB_COLOR_INDEX_BIT
) {
284 glxValue
|= GLX_COLOR_INDEX_BIT
;
286 if (value
& __DRI_ATTRIB_FLOAT_BIT
) {
287 glxValue
|= GLX_RGBA_FLOAT_BIT_ARB
;
289 if (value
& __DRI_ATTRIB_UNSIGNED_FLOAT_BIT
) {
290 glxValue
|= GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT
;
292 if (glxValue
!= config
->renderType
)
296 case __DRI_ATTRIB_CONFIG_CAVEAT
:
297 if (value
& __DRI_ATTRIB_NON_CONFORMANT_CONFIG
)
298 glxValue
= GLX_NON_CONFORMANT_CONFIG
;
299 else if (value
& __DRI_ATTRIB_SLOW_BIT
)
300 glxValue
= GLX_SLOW_CONFIG
;
303 if (glxValue
!= config
->visualRating
)
307 case __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS
:
309 if (value
& __DRI_ATTRIB_TEXTURE_1D_BIT
)
310 glxValue
|= GLX_TEXTURE_1D_BIT_EXT
;
311 if (value
& __DRI_ATTRIB_TEXTURE_2D_BIT
)
312 glxValue
|= GLX_TEXTURE_2D_BIT_EXT
;
313 if (value
& __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT
)
314 glxValue
|= GLX_TEXTURE_RECTANGLE_BIT_EXT
;
315 if (config
->bindToTextureTargets
!= GLX_DONT_CARE
&&
316 glxValue
!= config
->bindToTextureTargets
)
320 case __DRI_ATTRIB_SWAP_METHOD
:
321 if (value
== __DRI_ATTRIB_SWAP_EXCHANGE
)
322 glxValue
= GLX_SWAP_EXCHANGE_OML
;
323 else if (value
== __DRI_ATTRIB_SWAP_COPY
)
324 glxValue
= GLX_SWAP_COPY_OML
;
326 glxValue
= GLX_SWAP_UNDEFINED_OML
;
328 if (!scalarEqual(config
, attrib
, glxValue
))
334 if (!scalarEqual(config
, attrib
, value
))
342 static struct glx_config
*
343 createDriMode(const __DRIcoreExtension
* core
,
344 struct glx_config
*config
, const __DRIconfig
**driConfigs
)
346 __GLXDRIconfigPrivate
*driConfig
;
349 for (i
= 0; driConfigs
[i
]; i
++) {
350 if (driConfigEqual(core
, config
, driConfigs
[i
]))
354 if (driConfigs
[i
] == NULL
)
357 driConfig
= malloc(sizeof *driConfig
);
358 if (driConfig
== NULL
)
361 driConfig
->base
= *config
;
362 driConfig
->driConfig
= driConfigs
[i
];
364 return &driConfig
->base
;
367 _X_HIDDEN
struct glx_config
*
368 driConvertConfigs(const __DRIcoreExtension
* core
,
369 struct glx_config
*configs
, const __DRIconfig
**driConfigs
)
371 struct glx_config head
, *tail
, *m
;
375 for (m
= configs
; m
; m
= m
->next
) {
376 tail
->next
= createDriMode(core
, m
, driConfigs
);
377 if (tail
->next
== NULL
) {
378 /* no matching dri config for m */
390 driDestroyConfigs(const __DRIconfig
**configs
)
394 for (i
= 0; configs
[i
]; i
++)
395 free((__DRIconfig
*) configs
[i
]);
399 static struct glx_config
*
400 driInferDrawableConfig(struct glx_screen
*psc
, GLXDrawable draw
)
402 unsigned int fbconfig
= 0;
404 if (__glXGetDrawableAttribute(psc
->dpy
, draw
, GLX_FBCONFIG_ID
, &fbconfig
)) {
405 return glx_config_find_fbconfig(psc
->configs
, fbconfig
);
411 _X_HIDDEN __GLXDRIdrawable
*
412 driFetchDrawable(struct glx_context
*gc
, GLXDrawable glxDrawable
)
414 struct glx_display
*const priv
= __glXInitialize(gc
->psc
->dpy
);
415 __GLXDRIdrawable
*pdraw
;
416 struct glx_screen
*psc
;
417 struct glx_config
*config
= gc
->config
;
422 if (glxDrawable
== None
)
425 psc
= priv
->screens
[gc
->screen
];
426 if (priv
->drawHash
== NULL
)
429 if (__glxHashLookup(priv
->drawHash
, glxDrawable
, (void *) &pdraw
) == 0) {
435 config
= driInferDrawableConfig(gc
->psc
, glxDrawable
);
439 pdraw
= psc
->driScreen
->createDrawable(psc
, glxDrawable
, glxDrawable
,
443 ErrorMessageF("failed to create drawable\n");
447 if (__glxHashInsert(priv
->drawHash
, glxDrawable
, pdraw
)) {
448 (*pdraw
->destroyDrawable
) (pdraw
);
457 driReleaseDrawables(struct glx_context
*gc
)
459 const struct glx_display
*priv
= gc
->psc
->display
;
460 __GLXDRIdrawable
*pdraw
;
465 if (__glxHashLookup(priv
->drawHash
,
466 gc
->currentDrawable
, (void *) &pdraw
) == 0) {
467 if (pdraw
->drawable
== pdraw
->xDrawable
) {
469 if (pdraw
->refcount
== 0) {
470 (*pdraw
->destroyDrawable
)(pdraw
);
471 __glxHashDelete(priv
->drawHash
, gc
->currentDrawable
);
476 if (__glxHashLookup(priv
->drawHash
,
477 gc
->currentReadable
, (void *) &pdraw
) == 0) {
478 if (pdraw
->drawable
== pdraw
->xDrawable
) {
480 if (pdraw
->refcount
== 0) {
481 (*pdraw
->destroyDrawable
)(pdraw
);
482 __glxHashDelete(priv
->drawHash
, gc
->currentReadable
);
487 gc
->currentDrawable
= None
;
488 gc
->currentReadable
= None
;
493 dri2_convert_glx_attribs(unsigned num_attribs
, const uint32_t *attribs
,
494 unsigned *major_ver
, unsigned *minor_ver
,
495 uint32_t *render_type
, uint32_t *flags
, unsigned *api
,
496 int *reset
, int *release
, unsigned *error
)
499 bool got_profile
= false;
504 *render_type
= GLX_RGBA_TYPE
;
505 *reset
= __DRI_CTX_RESET_NO_NOTIFICATION
;
506 *release
= __DRI_CTX_RELEASE_BEHAVIOR_FLUSH
;
508 *api
= __DRI_API_OPENGL
;
510 if (num_attribs
== 0) {
514 /* This is actually an internal error, but what the heck.
516 if (attribs
== NULL
) {
517 *error
= __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE
;
521 for (i
= 0; i
< num_attribs
; i
++) {
522 switch (attribs
[i
* 2]) {
523 case GLX_CONTEXT_MAJOR_VERSION_ARB
:
524 *major_ver
= attribs
[i
* 2 + 1];
526 case GLX_CONTEXT_MINOR_VERSION_ARB
:
527 *minor_ver
= attribs
[i
* 2 + 1];
529 case GLX_CONTEXT_FLAGS_ARB
:
530 *flags
= attribs
[i
* 2 + 1];
532 case GLX_CONTEXT_PROFILE_MASK_ARB
:
533 profile
= attribs
[i
* 2 + 1];
536 case GLX_RENDER_TYPE
:
537 *render_type
= attribs
[i
* 2 + 1];
539 case GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB
:
540 switch (attribs
[i
* 2 + 1]) {
541 case GLX_NO_RESET_NOTIFICATION_ARB
:
542 *reset
= __DRI_CTX_RESET_NO_NOTIFICATION
;
544 case GLX_LOSE_CONTEXT_ON_RESET_ARB
:
545 *reset
= __DRI_CTX_RESET_LOSE_CONTEXT
;
548 *error
= __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE
;
552 case GLX_CONTEXT_RELEASE_BEHAVIOR_ARB
:
553 switch (attribs
[i
* 2 + 1]) {
554 case GLX_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB
:
555 *release
= __DRI_CTX_RELEASE_BEHAVIOR_NONE
;
557 case GLX_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB
:
558 *release
= __DRI_CTX_RELEASE_BEHAVIOR_FLUSH
;
561 *error
= __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE
;
566 /* If an unknown attribute is received, fail.
568 *error
= __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE
;
574 if (*major_ver
> 3 || (*major_ver
== 3 && *minor_ver
>= 2))
575 *api
= __DRI_API_OPENGL_CORE
;
578 case GLX_CONTEXT_CORE_PROFILE_BIT_ARB
:
579 /* There are no profiles before OpenGL 3.2. The
580 * GLX_ARB_create_context_profile spec says:
582 * "If the requested OpenGL version is less than 3.2,
583 * GLX_CONTEXT_PROFILE_MASK_ARB is ignored and the functionality
584 * of the context is determined solely by the requested version."
586 *api
= (*major_ver
> 3 || (*major_ver
== 3 && *minor_ver
>= 2))
587 ? __DRI_API_OPENGL_CORE
: __DRI_API_OPENGL
;
589 case GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB
:
590 *api
= __DRI_API_OPENGL
;
592 case GLX_CONTEXT_ES_PROFILE_BIT_EXT
:
594 *api
= __DRI_API_GLES3
;
595 else if (*major_ver
== 2 && *minor_ver
== 0)
596 *api
= __DRI_API_GLES2
;
597 else if (*major_ver
== 1 && *minor_ver
< 2)
598 *api
= __DRI_API_GLES
;
600 *error
= __DRI_CTX_ERROR_BAD_API
;
605 *error
= __DRI_CTX_ERROR_BAD_API
;
610 /* Unknown flag value.
612 if (*flags
& ~(__DRI_CTX_FLAG_DEBUG
| __DRI_CTX_FLAG_FORWARD_COMPATIBLE
613 | __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
)) {
614 *error
= __DRI_CTX_ERROR_UNKNOWN_FLAG
;
618 /* There are no forward-compatible contexts before OpenGL 3.0. The
619 * GLX_ARB_create_context spec says:
621 * "Forward-compatible contexts are defined only for OpenGL versions
624 if (*major_ver
< 3 && (*flags
& __DRI_CTX_FLAG_FORWARD_COMPATIBLE
) != 0) {
625 *error
= __DRI_CTX_ERROR_BAD_FLAG
;
629 if (*major_ver
>= 3 && *render_type
== GLX_COLOR_INDEX_TYPE
) {
630 *error
= __DRI_CTX_ERROR_BAD_FLAG
;
634 *error
= __DRI_CTX_ERROR_SUCCESS
;
638 #endif /* GLX_DIRECT_RENDERING */