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"
81 * Try to \c dlopen the named driver.
83 * This function adds the "_dri.so" suffix to the driver name and searches the
84 * directories specified by the \c LIBGL_DRIVERS_PATH environment variable in
85 * order to find the driver.
87 * \param driverName - a name like "i965", "radeon", "nouveau", etc.
88 * \param out_driver_handle - Address to return the resulting dlopen() handle.
91 * The __DRIextension entrypoint table for the driver, or \c NULL if driver
94 _X_HIDDEN
const __DRIextension
**
95 driOpenDriver(const char *driverName
, void **out_driver_handle
)
99 /* Attempt to make sure libGL symbols will be visible to the driver */
100 glhandle
= dlopen(GL_LIB_NAME
, RTLD_NOW
| RTLD_GLOBAL
);
102 static const char *search_path_vars
[] = {
103 "LIBGL_DRIVERS_PATH",
104 "LIBGL_DRIVERS_DIR", /* deprecated */
108 const __DRIextension
**extensions
=
109 loader_open_driver(driverName
, out_driver_handle
, search_path_vars
);
118 __driGetMSCRate(__DRIdrawable
*draw
,
119 int32_t * numerator
, int32_t * denominator
,
122 __GLXDRIdrawable
*glxDraw
= loaderPrivate
;
124 return __glxGetMscRate(glxDraw
->psc
, numerator
, denominator
);
127 _X_HIDDEN
const __DRIsystemTimeExtension systemTimeExtension
= {
128 .base
= {__DRI_SYSTEM_TIME
, 1 },
130 .getUST
= __glXGetUST
,
131 .getMSCRate
= __driGetMSCRate
134 #define __ATTRIB(attrib, field) \
135 { attrib, offsetof(struct glx_config, field) }
139 unsigned int attrib
, offset
;
141 __ATTRIB(__DRI_ATTRIB_BUFFER_SIZE
, rgbBits
),
142 __ATTRIB(__DRI_ATTRIB_LEVEL
, level
),
143 __ATTRIB(__DRI_ATTRIB_RED_SIZE
, redBits
),
144 __ATTRIB(__DRI_ATTRIB_GREEN_SIZE
, greenBits
),
145 __ATTRIB(__DRI_ATTRIB_BLUE_SIZE
, blueBits
),
146 __ATTRIB(__DRI_ATTRIB_ALPHA_SIZE
, alphaBits
),
147 __ATTRIB(__DRI_ATTRIB_DEPTH_SIZE
, depthBits
),
148 __ATTRIB(__DRI_ATTRIB_STENCIL_SIZE
, stencilBits
),
149 __ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE
, accumRedBits
),
150 __ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE
, accumGreenBits
),
151 __ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE
, accumBlueBits
),
152 __ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE
, accumAlphaBits
),
153 __ATTRIB(__DRI_ATTRIB_SAMPLE_BUFFERS
, sampleBuffers
),
154 __ATTRIB(__DRI_ATTRIB_SAMPLES
, samples
),
155 __ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER
, doubleBufferMode
),
156 __ATTRIB(__DRI_ATTRIB_STEREO
, stereoMode
),
157 __ATTRIB(__DRI_ATTRIB_AUX_BUFFERS
, numAuxBuffers
),
159 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_TYPE
, transparentPixel
),
160 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_INDEX_VALUE
, transparentIndex
),
161 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_RED_VALUE
, transparentRed
),
162 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_GREEN_VALUE
, transparentGreen
),
163 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_BLUE_VALUE
, transparentBlue
),
164 __ATTRIB(__DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE
, transparentAlpha
),
165 __ATTRIB(__DRI_ATTRIB_RED_MASK
, redMask
),
166 __ATTRIB(__DRI_ATTRIB_GREEN_MASK
, greenMask
),
167 __ATTRIB(__DRI_ATTRIB_BLUE_MASK
, blueMask
),
168 __ATTRIB(__DRI_ATTRIB_ALPHA_MASK
, alphaMask
),
170 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_WIDTH
, maxPbufferWidth
),
171 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_HEIGHT
, maxPbufferHeight
),
172 __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_PIXELS
, maxPbufferPixels
),
173 __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH
, optimalPbufferWidth
),
174 __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT
, optimalPbufferHeight
),
175 __ATTRIB(__DRI_ATTRIB_SWAP_METHOD
, swapMethod
),
176 __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB
, bindToTextureRgb
),
177 __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA
, bindToTextureRgba
),
178 __ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE
,
179 bindToMipmapTexture
),
180 __ATTRIB(__DRI_ATTRIB_YINVERTED
, yInverted
),
181 __ATTRIB(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE
, sRGBCapable
)
185 scalarEqual(struct glx_config
*mode
, unsigned int attrib
, unsigned int value
)
187 unsigned glxValue
, i
;
189 for (i
= 0; i
< ARRAY_SIZE(attribMap
); i
++)
190 if (attribMap
[i
].attrib
== attrib
) {
191 glxValue
= *(unsigned int *) ((char *) mode
+ attribMap
[i
].offset
);
192 return glxValue
== GLX_DONT_CARE
|| glxValue
== value
;
195 return GL_TRUE
; /* Is a non-existing attribute equal to value? */
199 driConfigEqual(const __DRIcoreExtension
*core
,
200 struct glx_config
*config
, const __DRIconfig
*driConfig
)
202 unsigned int attrib
, value
, glxValue
;
206 while (core
->indexConfigAttrib(driConfig
, i
++, &attrib
, &value
)) {
208 case __DRI_ATTRIB_RENDER_TYPE
:
210 if (value
& __DRI_ATTRIB_RGBA_BIT
) {
211 glxValue
|= GLX_RGBA_BIT
;
213 if (value
& __DRI_ATTRIB_COLOR_INDEX_BIT
) {
214 glxValue
|= GLX_COLOR_INDEX_BIT
;
216 if (value
& __DRI_ATTRIB_FLOAT_BIT
) {
217 glxValue
|= GLX_RGBA_FLOAT_BIT_ARB
;
219 if (value
& __DRI_ATTRIB_UNSIGNED_FLOAT_BIT
) {
220 glxValue
|= GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT
;
222 if (glxValue
!= config
->renderType
)
226 case __DRI_ATTRIB_CONFIG_CAVEAT
:
227 if (value
& __DRI_ATTRIB_NON_CONFORMANT_CONFIG
)
228 glxValue
= GLX_NON_CONFORMANT_CONFIG
;
229 else if (value
& __DRI_ATTRIB_SLOW_BIT
)
230 glxValue
= GLX_SLOW_CONFIG
;
233 if (glxValue
!= config
->visualRating
)
237 case __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS
:
239 if (value
& __DRI_ATTRIB_TEXTURE_1D_BIT
)
240 glxValue
|= GLX_TEXTURE_1D_BIT_EXT
;
241 if (value
& __DRI_ATTRIB_TEXTURE_2D_BIT
)
242 glxValue
|= GLX_TEXTURE_2D_BIT_EXT
;
243 if (value
& __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT
)
244 glxValue
|= GLX_TEXTURE_RECTANGLE_BIT_EXT
;
245 if (config
->bindToTextureTargets
!= GLX_DONT_CARE
&&
246 glxValue
!= config
->bindToTextureTargets
)
250 case __DRI_ATTRIB_SWAP_METHOD
:
251 if (value
== __DRI_ATTRIB_SWAP_EXCHANGE
)
252 glxValue
= GLX_SWAP_EXCHANGE_OML
;
253 else if (value
== __DRI_ATTRIB_SWAP_COPY
)
254 glxValue
= GLX_SWAP_COPY_OML
;
256 glxValue
= GLX_SWAP_UNDEFINED_OML
;
258 if (!scalarEqual(config
, attrib
, glxValue
))
264 if (!scalarEqual(config
, attrib
, value
))
272 static struct glx_config
*
273 createDriMode(const __DRIcoreExtension
* core
,
274 struct glx_config
*config
, const __DRIconfig
**driConfigs
)
276 __GLXDRIconfigPrivate
*driConfig
;
279 for (i
= 0; driConfigs
[i
]; i
++) {
280 if (driConfigEqual(core
, config
, driConfigs
[i
]))
284 if (driConfigs
[i
] == NULL
)
287 driConfig
= malloc(sizeof *driConfig
);
288 if (driConfig
== NULL
)
291 driConfig
->base
= *config
;
292 driConfig
->driConfig
= driConfigs
[i
];
294 return &driConfig
->base
;
297 _X_HIDDEN
struct glx_config
*
298 driConvertConfigs(const __DRIcoreExtension
* core
,
299 struct glx_config
*configs
, const __DRIconfig
**driConfigs
)
301 struct glx_config head
, *tail
, *m
;
305 for (m
= configs
; m
; m
= m
->next
) {
306 tail
->next
= createDriMode(core
, m
, driConfigs
);
307 if (tail
->next
== NULL
) {
308 /* no matching dri config for m */
320 driDestroyConfigs(const __DRIconfig
**configs
)
324 for (i
= 0; configs
[i
]; i
++)
325 free((__DRIconfig
*) configs
[i
]);
329 static struct glx_config
*
330 driInferDrawableConfig(struct glx_screen
*psc
, GLXDrawable draw
)
332 unsigned int fbconfig
= 0;
334 if (__glXGetDrawableAttribute(psc
->dpy
, draw
, GLX_FBCONFIG_ID
, &fbconfig
)) {
335 return glx_config_find_fbconfig(psc
->configs
, fbconfig
);
341 _X_HIDDEN __GLXDRIdrawable
*
342 driFetchDrawable(struct glx_context
*gc
, GLXDrawable glxDrawable
)
344 struct glx_display
*const priv
= __glXInitialize(gc
->psc
->dpy
);
345 __GLXDRIdrawable
*pdraw
;
346 struct glx_screen
*psc
;
347 struct glx_config
*config
= gc
->config
;
352 if (glxDrawable
== None
)
355 psc
= priv
->screens
[gc
->screen
];
356 if (priv
->drawHash
== NULL
)
359 if (__glxHashLookup(priv
->drawHash
, glxDrawable
, (void *) &pdraw
) == 0) {
365 config
= driInferDrawableConfig(gc
->psc
, glxDrawable
);
369 pdraw
= psc
->driScreen
->createDrawable(psc
, glxDrawable
, glxDrawable
,
373 ErrorMessageF("failed to create drawable\n");
377 if (__glxHashInsert(priv
->drawHash
, glxDrawable
, pdraw
)) {
378 (*pdraw
->destroyDrawable
) (pdraw
);
387 driReleaseDrawables(struct glx_context
*gc
)
389 const struct glx_display
*priv
= gc
->psc
->display
;
390 __GLXDRIdrawable
*pdraw
;
395 if (__glxHashLookup(priv
->drawHash
,
396 gc
->currentDrawable
, (void *) &pdraw
) == 0) {
397 if (pdraw
->drawable
== pdraw
->xDrawable
) {
399 if (pdraw
->refcount
== 0) {
400 (*pdraw
->destroyDrawable
)(pdraw
);
401 __glxHashDelete(priv
->drawHash
, gc
->currentDrawable
);
406 if (__glxHashLookup(priv
->drawHash
,
407 gc
->currentReadable
, (void *) &pdraw
) == 0) {
408 if (pdraw
->drawable
== pdraw
->xDrawable
) {
410 if (pdraw
->refcount
== 0) {
411 (*pdraw
->destroyDrawable
)(pdraw
);
412 __glxHashDelete(priv
->drawHash
, gc
->currentReadable
);
417 gc
->currentDrawable
= None
;
418 gc
->currentReadable
= None
;
423 dri2_convert_glx_attribs(unsigned num_attribs
, const uint32_t *attribs
,
424 unsigned *major_ver
, unsigned *minor_ver
,
425 uint32_t *render_type
, uint32_t *flags
, unsigned *api
,
426 int *reset
, int *release
, unsigned *error
)
429 bool got_profile
= false;
434 *render_type
= GLX_RGBA_TYPE
;
435 *reset
= __DRI_CTX_RESET_NO_NOTIFICATION
;
436 *release
= __DRI_CTX_RELEASE_BEHAVIOR_FLUSH
;
438 *api
= __DRI_API_OPENGL
;
440 if (num_attribs
== 0) {
444 /* This is actually an internal error, but what the heck.
446 if (attribs
== NULL
) {
447 *error
= __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE
;
451 for (i
= 0; i
< num_attribs
; i
++) {
452 switch (attribs
[i
* 2]) {
453 case GLX_CONTEXT_MAJOR_VERSION_ARB
:
454 *major_ver
= attribs
[i
* 2 + 1];
456 case GLX_CONTEXT_MINOR_VERSION_ARB
:
457 *minor_ver
= attribs
[i
* 2 + 1];
459 case GLX_CONTEXT_FLAGS_ARB
:
460 *flags
= attribs
[i
* 2 + 1];
462 case GLX_CONTEXT_PROFILE_MASK_ARB
:
463 profile
= attribs
[i
* 2 + 1];
466 case GLX_RENDER_TYPE
:
467 *render_type
= attribs
[i
* 2 + 1];
469 case GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB
:
470 switch (attribs
[i
* 2 + 1]) {
471 case GLX_NO_RESET_NOTIFICATION_ARB
:
472 *reset
= __DRI_CTX_RESET_NO_NOTIFICATION
;
474 case GLX_LOSE_CONTEXT_ON_RESET_ARB
:
475 *reset
= __DRI_CTX_RESET_LOSE_CONTEXT
;
478 *error
= __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE
;
482 case GLX_CONTEXT_RELEASE_BEHAVIOR_ARB
:
483 switch (attribs
[i
* 2 + 1]) {
484 case GLX_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB
:
485 *release
= __DRI_CTX_RELEASE_BEHAVIOR_NONE
;
487 case GLX_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB
:
488 *release
= __DRI_CTX_RELEASE_BEHAVIOR_FLUSH
;
491 *error
= __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE
;
496 /* If an unknown attribute is received, fail.
498 *error
= __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE
;
504 if (*major_ver
> 3 || (*major_ver
== 3 && *minor_ver
>= 2))
505 *api
= __DRI_API_OPENGL_CORE
;
508 case GLX_CONTEXT_CORE_PROFILE_BIT_ARB
:
509 /* There are no profiles before OpenGL 3.2. The
510 * GLX_ARB_create_context_profile spec says:
512 * "If the requested OpenGL version is less than 3.2,
513 * GLX_CONTEXT_PROFILE_MASK_ARB is ignored and the functionality
514 * of the context is determined solely by the requested version."
516 *api
= (*major_ver
> 3 || (*major_ver
== 3 && *minor_ver
>= 2))
517 ? __DRI_API_OPENGL_CORE
: __DRI_API_OPENGL
;
519 case GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB
:
520 *api
= __DRI_API_OPENGL
;
522 case GLX_CONTEXT_ES_PROFILE_BIT_EXT
:
524 *api
= __DRI_API_GLES3
;
525 else if (*major_ver
== 2 && *minor_ver
== 0)
526 *api
= __DRI_API_GLES2
;
527 else if (*major_ver
== 1 && *minor_ver
< 2)
528 *api
= __DRI_API_GLES
;
530 *error
= __DRI_CTX_ERROR_BAD_API
;
535 *error
= __DRI_CTX_ERROR_BAD_API
;
540 /* Unknown flag value.
542 if (*flags
& ~(__DRI_CTX_FLAG_DEBUG
| __DRI_CTX_FLAG_FORWARD_COMPATIBLE
543 | __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
)) {
544 *error
= __DRI_CTX_ERROR_UNKNOWN_FLAG
;
548 /* There are no forward-compatible contexts before OpenGL 3.0. The
549 * GLX_ARB_create_context spec says:
551 * "Forward-compatible contexts are defined only for OpenGL versions
554 if (*major_ver
< 3 && (*flags
& __DRI_CTX_FLAG_FORWARD_COMPATIBLE
) != 0) {
555 *error
= __DRI_CTX_ERROR_BAD_FLAG
;
559 if (*major_ver
>= 3 && *render_type
== GLX_COLOR_INDEX_TYPE
) {
560 *error
= __DRI_CTX_ERROR_BAD_FLAG
;
564 *error
= __DRI_CTX_ERROR_SUCCESS
;
568 #endif /* GLX_DIRECT_RENDERING */