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 static const __DRIextension
**
81 driGetDriverExtensions(void *handle
, const char *driver_name
);
84 * Try to \c dlopen the named driver.
86 * This function adds the "_dri.so" suffix to the driver name and searches the
87 * directories specified by the \c LIBGL_DRIVERS_PATH environment variable in
88 * order to find the driver.
90 * \param driverName - a name like "i965", "radeon", "nouveau", etc.
91 * \param out_driver_handle - Address to return the resulting dlopen() handle.
94 * The __DRIextension entrypoint table for the driver, or \c NULL if driver
97 _X_HIDDEN
const __DRIextension
**
98 driOpenDriver(const char *driverName
, void **out_driver_handle
)
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
);
156 const __DRIextension
**extensions
= driGetDriverExtensions(handle
,
163 *out_driver_handle
= handle
;
167 static const __DRIextension
**
168 driGetDriverExtensions(void *handle
, const char *driver_name
)
170 const __DRIextension
**extensions
= NULL
;
171 const __DRIextension
**(*get_extensions
)(void);
172 char *get_extensions_name
= loader_get_extensions_name(driver_name
);
174 if (get_extensions_name
) {
175 get_extensions
= dlsym(handle
, get_extensions_name
);
176 if (get_extensions
) {
177 free(get_extensions_name
);
178 return get_extensions();
180 InfoMessageF("driver does not expose %s(): %s\n",
181 get_extensions_name
, dlerror());
182 free(get_extensions_name
);
186 extensions
= dlsym(handle
, __DRI_DRIVER_EXTENSIONS
);
187 if (extensions
== NULL
) {
188 ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
196 __driGetMSCRate(__DRIdrawable
*draw
,
197 int32_t * numerator
, int32_t * denominator
,
200 __GLXDRIdrawable
*glxDraw
= loaderPrivate
;
202 return __glxGetMscRate(glxDraw
->psc
, numerator
, denominator
);
205 _X_HIDDEN
const __DRIsystemTimeExtension systemTimeExtension
= {
206 .base
= {__DRI_SYSTEM_TIME
, 1 },
208 .getUST
= __glXGetUST
,
209 .getMSCRate
= __driGetMSCRate
212 #define __ATTRIB(attrib, field) \
213 { attrib, offsetof(struct glx_config, field) }
217 unsigned int attrib
, offset
;
219 __ATTRIB(__DRI_ATTRIB_BUFFER_SIZE
, rgbBits
),
220 __ATTRIB(__DRI_ATTRIB_LEVEL
, level
),
221 __ATTRIB(__DRI_ATTRIB_RED_SIZE
, redBits
),
222 __ATTRIB(__DRI_ATTRIB_GREEN_SIZE
, greenBits
),
223 __ATTRIB(__DRI_ATTRIB_BLUE_SIZE
, blueBits
),
224 __ATTRIB(__DRI_ATTRIB_ALPHA_SIZE
, alphaBits
),
225 __ATTRIB(__DRI_ATTRIB_DEPTH_SIZE
, depthBits
),
226 __ATTRIB(__DRI_ATTRIB_STENCIL_SIZE
, stencilBits
),
227 __ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE
, accumRedBits
),
228 __ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE
, accumGreenBits
),
229 __ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE
, accumBlueBits
),
230 __ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE
, accumAlphaBits
),
231 __ATTRIB(__DRI_ATTRIB_SAMPLE_BUFFERS
, sampleBuffers
),
232 __ATTRIB(__DRI_ATTRIB_SAMPLES
, samples
),
233 __ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER
, doubleBufferMode
),
234 __ATTRIB(__DRI_ATTRIB_STEREO
, stereoMode
),
235 __ATTRIB(__DRI_ATTRIB_AUX_BUFFERS
, numAuxBuffers
),
237 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_TYPE
, transparentPixel
),
238 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_INDEX_VALUE
, transparentIndex
),
239 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_RED_VALUE
, transparentRed
),
240 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_GREEN_VALUE
, transparentGreen
),
241 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_BLUE_VALUE
, transparentBlue
),
242 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE
, transparentAlpha
),
243 __ATTRIB(__DRI_ATTRIB_RED_MASK
, redMask
),
244 __ATTRIB(__DRI_ATTRIB_GREEN_MASK
, greenMask
),
245 __ATTRIB(__DRI_ATTRIB_BLUE_MASK
, blueMask
),
246 __ATTRIB(__DRI_ATTRIB_ALPHA_MASK
, alphaMask
),
248 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_WIDTH
, maxPbufferWidth
),
249 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_HEIGHT
, maxPbufferHeight
),
250 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_PIXELS
, maxPbufferPixels
),
251 __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH
, optimalPbufferWidth
),
252 __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT
, optimalPbufferHeight
),
253 __ATTRIB(__DRI_ATTRIB_SWAP_METHOD
, swapMethod
),
254 __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB
, bindToTextureRgb
),
255 __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA
, bindToTextureRgba
),
256 __ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE
,
257 bindToMipmapTexture
),
258 __ATTRIB(__DRI_ATTRIB_YINVERTED
, yInverted
),
259 __ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE
, sRGBCapable
)
263 scalarEqual(struct glx_config
*mode
, unsigned int attrib
, unsigned int value
)
265 unsigned glxValue
, i
;
267 for (i
= 0; i
< ARRAY_SIZE(attribMap
); i
++)
268 if (attribMap
[i
].attrib
== attrib
) {
269 glxValue
= *(unsigned int *) ((char *) mode
+ attribMap
[i
].offset
);
270 return glxValue
== GLX_DONT_CARE
|| glxValue
== value
;
273 return GL_TRUE
; /* Is a non-existing attribute equal to value? */
277 driConfigEqual(const __DRIcoreExtension
*core
,
278 struct glx_config
*config
, const __DRIconfig
*driConfig
)
280 unsigned int attrib
, value
, glxValue
;
284 while (core
->indexConfigAttrib(driConfig
, i
++, &attrib
, &value
)) {
286 case __DRI_ATTRIB_RENDER_TYPE
:
288 if (value
& __DRI_ATTRIB_RGBA_BIT
) {
289 glxValue
|= GLX_RGBA_BIT
;
291 if (value
& __DRI_ATTRIB_COLOR_INDEX_BIT
) {
292 glxValue
|= GLX_COLOR_INDEX_BIT
;
294 if (value
& __DRI_ATTRIB_FLOAT_BIT
) {
295 glxValue
|= GLX_RGBA_FLOAT_BIT_ARB
;
297 if (value
& __DRI_ATTRIB_UNSIGNED_FLOAT_BIT
) {
298 glxValue
|= GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT
;
300 if (glxValue
!= config
->renderType
)
304 case __DRI_ATTRIB_CONFIG_CAVEAT
:
305 if (value
& __DRI_ATTRIB_NON_CONFORMANT_CONFIG
)
306 glxValue
= GLX_NON_CONFORMANT_CONFIG
;
307 else if (value
& __DRI_ATTRIB_SLOW_BIT
)
308 glxValue
= GLX_SLOW_CONFIG
;
311 if (glxValue
!= config
->visualRating
)
315 case __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS
:
317 if (value
& __DRI_ATTRIB_TEXTURE_1D_BIT
)
318 glxValue
|= GLX_TEXTURE_1D_BIT_EXT
;
319 if (value
& __DRI_ATTRIB_TEXTURE_2D_BIT
)
320 glxValue
|= GLX_TEXTURE_2D_BIT_EXT
;
321 if (value
& __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT
)
322 glxValue
|= GLX_TEXTURE_RECTANGLE_BIT_EXT
;
323 if (config
->bindToTextureTargets
!= GLX_DONT_CARE
&&
324 glxValue
!= config
->bindToTextureTargets
)
328 case __DRI_ATTRIB_SWAP_METHOD
:
329 if (value
== __DRI_ATTRIB_SWAP_EXCHANGE
)
330 glxValue
= GLX_SWAP_EXCHANGE_OML
;
331 else if (value
== __DRI_ATTRIB_SWAP_COPY
)
332 glxValue
= GLX_SWAP_COPY_OML
;
334 glxValue
= GLX_SWAP_UNDEFINED_OML
;
336 if (!scalarEqual(config
, attrib
, glxValue
))
342 if (!scalarEqual(config
, attrib
, value
))
350 static struct glx_config
*
351 createDriMode(const __DRIcoreExtension
* core
,
352 struct glx_config
*config
, const __DRIconfig
**driConfigs
)
354 __GLXDRIconfigPrivate
*driConfig
;
357 for (i
= 0; driConfigs
[i
]; i
++) {
358 if (driConfigEqual(core
, config
, driConfigs
[i
]))
362 if (driConfigs
[i
] == NULL
)
365 driConfig
= malloc(sizeof *driConfig
);
366 if (driConfig
== NULL
)
369 driConfig
->base
= *config
;
370 driConfig
->driConfig
= driConfigs
[i
];
372 return &driConfig
->base
;
375 _X_HIDDEN
struct glx_config
*
376 driConvertConfigs(const __DRIcoreExtension
* core
,
377 struct glx_config
*configs
, const __DRIconfig
**driConfigs
)
379 struct glx_config head
, *tail
, *m
;
383 for (m
= configs
; m
; m
= m
->next
) {
384 tail
->next
= createDriMode(core
, m
, driConfigs
);
385 if (tail
->next
== NULL
) {
386 /* no matching dri config for m */
398 driDestroyConfigs(const __DRIconfig
**configs
)
402 for (i
= 0; configs
[i
]; i
++)
403 free((__DRIconfig
*) configs
[i
]);
407 static struct glx_config
*
408 driInferDrawableConfig(struct glx_screen
*psc
, GLXDrawable draw
)
410 unsigned int fbconfig
= 0;
412 if (__glXGetDrawableAttribute(psc
->dpy
, draw
, GLX_FBCONFIG_ID
, &fbconfig
)) {
413 return glx_config_find_fbconfig(psc
->configs
, fbconfig
);
419 _X_HIDDEN __GLXDRIdrawable
*
420 driFetchDrawable(struct glx_context
*gc
, GLXDrawable glxDrawable
)
422 struct glx_display
*const priv
= __glXInitialize(gc
->psc
->dpy
);
423 __GLXDRIdrawable
*pdraw
;
424 struct glx_screen
*psc
;
425 struct glx_config
*config
= gc
->config
;
430 if (glxDrawable
== None
)
433 psc
= priv
->screens
[gc
->screen
];
434 if (priv
->drawHash
== NULL
)
437 if (__glxHashLookup(priv
->drawHash
, glxDrawable
, (void *) &pdraw
) == 0) {
443 config
= driInferDrawableConfig(gc
->psc
, glxDrawable
);
447 pdraw
= psc
->driScreen
->createDrawable(psc
, glxDrawable
, glxDrawable
,
451 ErrorMessageF("failed to create drawable\n");
455 if (__glxHashInsert(priv
->drawHash
, glxDrawable
, pdraw
)) {
456 (*pdraw
->destroyDrawable
) (pdraw
);
465 driReleaseDrawables(struct glx_context
*gc
)
467 const struct glx_display
*priv
= gc
->psc
->display
;
468 __GLXDRIdrawable
*pdraw
;
473 if (__glxHashLookup(priv
->drawHash
,
474 gc
->currentDrawable
, (void *) &pdraw
) == 0) {
475 if (pdraw
->drawable
== pdraw
->xDrawable
) {
477 if (pdraw
->refcount
== 0) {
478 (*pdraw
->destroyDrawable
)(pdraw
);
479 __glxHashDelete(priv
->drawHash
, gc
->currentDrawable
);
484 if (__glxHashLookup(priv
->drawHash
,
485 gc
->currentReadable
, (void *) &pdraw
) == 0) {
486 if (pdraw
->drawable
== pdraw
->xDrawable
) {
488 if (pdraw
->refcount
== 0) {
489 (*pdraw
->destroyDrawable
)(pdraw
);
490 __glxHashDelete(priv
->drawHash
, gc
->currentReadable
);
495 gc
->currentDrawable
= None
;
496 gc
->currentReadable
= None
;
501 dri2_convert_glx_attribs(unsigned num_attribs
, const uint32_t *attribs
,
502 unsigned *major_ver
, unsigned *minor_ver
,
503 uint32_t *render_type
, uint32_t *flags
, unsigned *api
,
504 int *reset
, int *release
, unsigned *error
)
507 bool got_profile
= false;
512 *render_type
= GLX_RGBA_TYPE
;
513 *reset
= __DRI_CTX_RESET_NO_NOTIFICATION
;
514 *release
= __DRI_CTX_RELEASE_BEHAVIOR_FLUSH
;
516 *api
= __DRI_API_OPENGL
;
518 if (num_attribs
== 0) {
522 /* This is actually an internal error, but what the heck.
524 if (attribs
== NULL
) {
525 *error
= __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE
;
529 for (i
= 0; i
< num_attribs
; i
++) {
530 switch (attribs
[i
* 2]) {
531 case GLX_CONTEXT_MAJOR_VERSION_ARB
:
532 *major_ver
= attribs
[i
* 2 + 1];
534 case GLX_CONTEXT_MINOR_VERSION_ARB
:
535 *minor_ver
= attribs
[i
* 2 + 1];
537 case GLX_CONTEXT_FLAGS_ARB
:
538 *flags
= attribs
[i
* 2 + 1];
540 case GLX_CONTEXT_PROFILE_MASK_ARB
:
541 profile
= attribs
[i
* 2 + 1];
544 case GLX_RENDER_TYPE
:
545 *render_type
= attribs
[i
* 2 + 1];
547 case GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB
:
548 switch (attribs
[i
* 2 + 1]) {
549 case GLX_NO_RESET_NOTIFICATION_ARB
:
550 *reset
= __DRI_CTX_RESET_NO_NOTIFICATION
;
552 case GLX_LOSE_CONTEXT_ON_RESET_ARB
:
553 *reset
= __DRI_CTX_RESET_LOSE_CONTEXT
;
556 *error
= __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE
;
560 case GLX_CONTEXT_RELEASE_BEHAVIOR_ARB
:
561 switch (attribs
[i
* 2 + 1]) {
562 case GLX_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB
:
563 *release
= __DRI_CTX_RELEASE_BEHAVIOR_NONE
;
565 case GLX_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB
:
566 *release
= __DRI_CTX_RELEASE_BEHAVIOR_FLUSH
;
569 *error
= __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE
;
574 /* If an unknown attribute is received, fail.
576 *error
= __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE
;
582 if (*major_ver
> 3 || (*major_ver
== 3 && *minor_ver
>= 2))
583 *api
= __DRI_API_OPENGL_CORE
;
586 case GLX_CONTEXT_CORE_PROFILE_BIT_ARB
:
587 /* There are no profiles before OpenGL 3.2. The
588 * GLX_ARB_create_context_profile spec says:
590 * "If the requested OpenGL version is less than 3.2,
591 * GLX_CONTEXT_PROFILE_MASK_ARB is ignored and the functionality
592 * of the context is determined solely by the requested version."
594 *api
= (*major_ver
> 3 || (*major_ver
== 3 && *minor_ver
>= 2))
595 ? __DRI_API_OPENGL_CORE
: __DRI_API_OPENGL
;
597 case GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB
:
598 *api
= __DRI_API_OPENGL
;
600 case GLX_CONTEXT_ES_PROFILE_BIT_EXT
:
602 *api
= __DRI_API_GLES3
;
603 else if (*major_ver
== 2 && *minor_ver
== 0)
604 *api
= __DRI_API_GLES2
;
605 else if (*major_ver
== 1 && *minor_ver
< 2)
606 *api
= __DRI_API_GLES
;
608 *error
= __DRI_CTX_ERROR_BAD_API
;
613 *error
= __DRI_CTX_ERROR_BAD_API
;
618 /* Unknown flag value.
620 if (*flags
& ~(__DRI_CTX_FLAG_DEBUG
| __DRI_CTX_FLAG_FORWARD_COMPATIBLE
621 | __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
)) {
622 *error
= __DRI_CTX_ERROR_UNKNOWN_FLAG
;
626 /* There are no forward-compatible contexts before OpenGL 3.0. The
627 * GLX_ARB_create_context spec says:
629 * "Forward-compatible contexts are defined only for OpenGL versions
632 if (*major_ver
< 3 && (*flags
& __DRI_CTX_FLAG_FORWARD_COMPATIBLE
) != 0) {
633 *error
= __DRI_CTX_ERROR_BAD_FLAG
;
637 if (*major_ver
>= 3 && *render_type
== GLX_COLOR_INDEX_TYPE
) {
638 *error
= __DRI_CTX_ERROR_BAD_FLAG
;
642 *error
= __DRI_CTX_ERROR_SUCCESS
;
646 #endif /* GLX_DIRECT_RENDERING */