1 /**************************************************************************
3 * Copyright 2008 VMware, Inc.
4 * Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
5 * Copyright 2010-2011 LunarG, Inc.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the
10 * "Software"), to deal in the Software without restriction, including
11 * without limitation the rights to use, copy, modify, merge, publish,
12 * distribute, sub license, and/or sell copies of the Software, and to
13 * permit persons to whom the Software is furnished to do so, subject to
14 * the following conditions:
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
25 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26 * DEALINGS IN THE SOFTWARE.
28 **************************************************************************/
32 * EGL Configuration (pixel format) functions.
39 #include "c99_compat.h"
40 #include "util/macros.h"
42 #include "eglconfig.h"
43 #include "egldisplay.h"
44 #include "eglcurrent.h"
51 * Init the given _EGLconfig to default values.
52 * \param id the configuration's ID.
54 * Note that id must be positive for the config to be valid.
55 * It is also recommended that when there are N configs, their
56 * IDs are from 1 to N respectively.
59 _eglInitConfig(_EGLConfig
*conf
, _EGLDisplay
*dpy
, EGLint id
)
61 memset(conf
, 0, sizeof(*conf
));
65 /* some attributes take non-zero default values */
67 conf
->ConfigCaveat
= EGL_NONE
;
68 conf
->TransparentType
= EGL_NONE
;
69 conf
->NativeVisualType
= EGL_NONE
;
70 conf
->ColorBufferType
= EGL_RGB_BUFFER
;
75 * Link a config to its display and return the handle of the link.
76 * The handle can be passed to client directly.
78 * Note that we just save the ptr to the config (we don't copy the config).
81 _eglLinkConfig(_EGLConfig
*conf
)
83 _EGLDisplay
*dpy
= conf
->Display
;
87 assert(conf
->ConfigID
> 0);
90 dpy
->Configs
= _eglCreateArray("Config", 16);
92 return (EGLConfig
) NULL
;
95 _eglAppendArray(dpy
->Configs
, (void *) conf
);
97 return (EGLConfig
) conf
;
102 * Lookup a handle to find the linked config.
103 * Return NULL if the handle has no corresponding linked config.
106 _eglLookupConfig(EGLConfig config
, _EGLDisplay
*dpy
)
113 conf
= (_EGLConfig
*) _eglFindArray(dpy
->Configs
, (void *) config
);
115 assert(conf
->Display
== dpy
);
126 ATTRIB_TYPE_PSEUDO
, /* non-queryable */
127 ATTRIB_TYPE_PLATFORM
, /* platform-dependent */
131 ATTRIB_CRITERION_EXACT
,
132 ATTRIB_CRITERION_ATLEAST
,
133 ATTRIB_CRITERION_MASK
,
134 ATTRIB_CRITERION_SPECIAL
,
135 ATTRIB_CRITERION_IGNORE
139 /* EGL spec Table 3.1 and 3.4 */
140 static const struct {
143 enum criterion criterion
;
144 EGLint default_value
;
145 } _eglValidationTable
[] =
148 { EGL_BUFFER_SIZE
, ATTRIB_TYPE_INTEGER
,
149 ATTRIB_CRITERION_ATLEAST
,
151 { EGL_RED_SIZE
, ATTRIB_TYPE_INTEGER
,
152 ATTRIB_CRITERION_ATLEAST
,
154 { EGL_GREEN_SIZE
, ATTRIB_TYPE_INTEGER
,
155 ATTRIB_CRITERION_ATLEAST
,
157 { EGL_BLUE_SIZE
, ATTRIB_TYPE_INTEGER
,
158 ATTRIB_CRITERION_ATLEAST
,
160 { EGL_LUMINANCE_SIZE
, ATTRIB_TYPE_INTEGER
,
161 ATTRIB_CRITERION_ATLEAST
,
163 { EGL_ALPHA_SIZE
, ATTRIB_TYPE_INTEGER
,
164 ATTRIB_CRITERION_ATLEAST
,
166 { EGL_ALPHA_MASK_SIZE
, ATTRIB_TYPE_INTEGER
,
167 ATTRIB_CRITERION_ATLEAST
,
169 { EGL_BIND_TO_TEXTURE_RGB
, ATTRIB_TYPE_BOOLEAN
,
170 ATTRIB_CRITERION_EXACT
,
172 { EGL_BIND_TO_TEXTURE_RGBA
, ATTRIB_TYPE_BOOLEAN
,
173 ATTRIB_CRITERION_EXACT
,
175 { EGL_COLOR_BUFFER_TYPE
, ATTRIB_TYPE_ENUM
,
176 ATTRIB_CRITERION_EXACT
,
178 { EGL_CONFIG_CAVEAT
, ATTRIB_TYPE_ENUM
,
179 ATTRIB_CRITERION_EXACT
,
181 { EGL_CONFIG_ID
, ATTRIB_TYPE_INTEGER
,
182 ATTRIB_CRITERION_EXACT
,
184 { EGL_CONFORMANT
, ATTRIB_TYPE_BITMASK
,
185 ATTRIB_CRITERION_MASK
,
187 { EGL_DEPTH_SIZE
, ATTRIB_TYPE_INTEGER
,
188 ATTRIB_CRITERION_ATLEAST
,
190 { EGL_LEVEL
, ATTRIB_TYPE_PLATFORM
,
191 ATTRIB_CRITERION_EXACT
,
193 { EGL_MAX_PBUFFER_WIDTH
, ATTRIB_TYPE_INTEGER
,
194 ATTRIB_CRITERION_IGNORE
,
196 { EGL_MAX_PBUFFER_HEIGHT
, ATTRIB_TYPE_INTEGER
,
197 ATTRIB_CRITERION_IGNORE
,
199 { EGL_MAX_PBUFFER_PIXELS
, ATTRIB_TYPE_INTEGER
,
200 ATTRIB_CRITERION_IGNORE
,
202 { EGL_MAX_SWAP_INTERVAL
, ATTRIB_TYPE_INTEGER
,
203 ATTRIB_CRITERION_EXACT
,
205 { EGL_MIN_SWAP_INTERVAL
, ATTRIB_TYPE_INTEGER
,
206 ATTRIB_CRITERION_EXACT
,
208 { EGL_NATIVE_RENDERABLE
, ATTRIB_TYPE_BOOLEAN
,
209 ATTRIB_CRITERION_EXACT
,
211 { EGL_NATIVE_VISUAL_ID
, ATTRIB_TYPE_PLATFORM
,
212 ATTRIB_CRITERION_IGNORE
,
214 { EGL_NATIVE_VISUAL_TYPE
, ATTRIB_TYPE_PLATFORM
,
215 ATTRIB_CRITERION_EXACT
,
217 { EGL_RENDERABLE_TYPE
, ATTRIB_TYPE_BITMASK
,
218 ATTRIB_CRITERION_MASK
,
220 { EGL_SAMPLE_BUFFERS
, ATTRIB_TYPE_INTEGER
,
221 ATTRIB_CRITERION_ATLEAST
,
223 { EGL_SAMPLES
, ATTRIB_TYPE_INTEGER
,
224 ATTRIB_CRITERION_ATLEAST
,
226 { EGL_STENCIL_SIZE
, ATTRIB_TYPE_INTEGER
,
227 ATTRIB_CRITERION_ATLEAST
,
229 { EGL_SURFACE_TYPE
, ATTRIB_TYPE_BITMASK
,
230 ATTRIB_CRITERION_MASK
,
232 { EGL_TRANSPARENT_TYPE
, ATTRIB_TYPE_ENUM
,
233 ATTRIB_CRITERION_EXACT
,
235 { EGL_TRANSPARENT_RED_VALUE
, ATTRIB_TYPE_INTEGER
,
236 ATTRIB_CRITERION_EXACT
,
238 { EGL_TRANSPARENT_GREEN_VALUE
, ATTRIB_TYPE_INTEGER
,
239 ATTRIB_CRITERION_EXACT
,
241 { EGL_TRANSPARENT_BLUE_VALUE
, ATTRIB_TYPE_INTEGER
,
242 ATTRIB_CRITERION_EXACT
,
244 { EGL_MATCH_NATIVE_PIXMAP
, ATTRIB_TYPE_PSEUDO
,
245 ATTRIB_CRITERION_SPECIAL
,
248 { EGL_Y_INVERTED_NOK
, ATTRIB_TYPE_BOOLEAN
,
249 ATTRIB_CRITERION_EXACT
,
251 { EGL_FRAMEBUFFER_TARGET_ANDROID
, ATTRIB_TYPE_BOOLEAN
,
252 ATTRIB_CRITERION_EXACT
,
254 { EGL_RECORDABLE_ANDROID
, ATTRIB_TYPE_BOOLEAN
,
255 ATTRIB_CRITERION_EXACT
,
261 * Return true if a config is valid. When for_matching is true,
262 * EGL_DONT_CARE is accepted as a valid attribute value, and checks
263 * for conflicting attribute values are skipped.
265 * Note that some attributes are platform-dependent and are not
269 _eglValidateConfig(const _EGLConfig
*conf
, EGLBoolean for_matching
)
272 EGLBoolean valid
= EGL_TRUE
;
274 /* check attributes by their types */
275 for (i
= 0; i
< ARRAY_SIZE(_eglValidationTable
); i
++) {
278 attr
= _eglValidationTable
[i
].attr
;
279 val
= _eglGetConfigKey(conf
, attr
);
281 switch (_eglValidationTable
[i
].type
) {
282 case ATTRIB_TYPE_INTEGER
:
285 /* config id must be positive */
289 case EGL_SAMPLE_BUFFERS
:
290 /* there can be at most 1 sample buffer */
291 if (val
> 1 || val
< 0)
300 case ATTRIB_TYPE_BOOLEAN
:
301 if (val
!= EGL_TRUE
&& val
!= EGL_FALSE
)
304 case ATTRIB_TYPE_ENUM
:
306 case EGL_CONFIG_CAVEAT
:
307 if (val
!= EGL_NONE
&& val
!= EGL_SLOW_CONFIG
&&
308 val
!= EGL_NON_CONFORMANT_CONFIG
)
311 case EGL_TRANSPARENT_TYPE
:
312 if (val
!= EGL_NONE
&& val
!= EGL_TRANSPARENT_RGB
)
315 case EGL_COLOR_BUFFER_TYPE
:
316 if (val
!= EGL_RGB_BUFFER
&& val
!= EGL_LUMINANCE_BUFFER
)
324 case ATTRIB_TYPE_BITMASK
:
326 case EGL_SURFACE_TYPE
:
327 mask
= EGL_PBUFFER_BIT
|
330 EGL_VG_COLORSPACE_LINEAR_BIT
|
331 EGL_VG_ALPHA_FORMAT_PRE_BIT
|
332 EGL_MULTISAMPLE_RESOLVE_BOX_BIT
|
333 EGL_SWAP_BEHAVIOR_PRESERVED_BIT
;
335 case EGL_RENDERABLE_TYPE
:
337 mask
= EGL_OPENGL_ES_BIT
|
340 EGL_OPENGL_ES3_BIT_KHR
|
351 case ATTRIB_TYPE_PLATFORM
:
352 /* unable to check platform-dependent attributes here */
354 case ATTRIB_TYPE_PSEUDO
:
355 /* pseudo attributes should not be set */
361 if (!valid
&& for_matching
) {
362 /* accept EGL_DONT_CARE as a valid value */
363 if (val
== EGL_DONT_CARE
)
365 if (_eglValidationTable
[i
].criterion
== ATTRIB_CRITERION_SPECIAL
)
370 "attribute 0x%04x has an invalid value 0x%x", attr
, val
);
375 /* any invalid attribute value should have been catched */
376 if (!valid
|| for_matching
)
379 /* now check for conflicting attribute values */
381 switch (conf
->ColorBufferType
) {
383 if (conf
->LuminanceSize
)
385 if (conf
->RedSize
+ conf
->GreenSize
+
386 conf
->BlueSize
+ conf
->AlphaSize
!= conf
->BufferSize
)
389 case EGL_LUMINANCE_BUFFER
:
390 if (conf
->RedSize
|| conf
->GreenSize
|| conf
->BlueSize
)
392 if (conf
->LuminanceSize
+ conf
->AlphaSize
!= conf
->BufferSize
)
397 _eglLog(_EGL_DEBUG
, "conflicting color buffer type and channel sizes");
401 if (!conf
->SampleBuffers
&& conf
->Samples
)
404 _eglLog(_EGL_DEBUG
, "conflicting samples and sample buffers");
408 if (!(conf
->SurfaceType
& EGL_WINDOW_BIT
)) {
409 if (conf
->NativeVisualID
!= 0 || conf
->NativeVisualType
!= EGL_NONE
)
412 if (!(conf
->SurfaceType
& EGL_PBUFFER_BIT
)) {
413 if (conf
->BindToTextureRGB
|| conf
->BindToTextureRGBA
)
417 _eglLog(_EGL_DEBUG
, "conflicting surface type and native visual/texture binding");
426 * Return true if a config matches the criteria. This and
427 * _eglParseConfigAttribList together implement the algorithm
428 * described in "Selection of EGLConfigs".
430 * Note that attributes that are special (currently, only
431 * EGL_MATCH_NATIVE_PIXMAP) are ignored.
434 _eglMatchConfig(const _EGLConfig
*conf
, const _EGLConfig
*criteria
)
437 EGLBoolean matched
= EGL_TRUE
;
439 for (i
= 0; i
< ARRAY_SIZE(_eglValidationTable
); i
++) {
441 if (_eglValidationTable
[i
].criterion
== ATTRIB_CRITERION_IGNORE
)
444 attr
= _eglValidationTable
[i
].attr
;
445 cmp
= _eglGetConfigKey(criteria
, attr
);
446 if (cmp
== EGL_DONT_CARE
)
449 val
= _eglGetConfigKey(conf
, attr
);
450 switch (_eglValidationTable
[i
].criterion
) {
451 case ATTRIB_CRITERION_EXACT
:
455 case ATTRIB_CRITERION_ATLEAST
:
459 case ATTRIB_CRITERION_MASK
:
460 if ((val
& cmp
) != cmp
)
463 case ATTRIB_CRITERION_SPECIAL
:
466 case ATTRIB_CRITERION_IGNORE
:
467 unreachable("already handled above");
473 /* only print the common errors when DEBUG is not defined */
474 if (attr
!= EGL_RENDERABLE_TYPE
)
478 "the value (0x%x) of attribute 0x%04x did not meet the criteria (0x%x)",
487 static inline EGLBoolean
488 _eglIsConfigAttribValid(_EGLConfig
*conf
, EGLint attr
)
490 if (_eglOffsetOfConfig(attr
) < 0)
494 case EGL_Y_INVERTED_NOK
:
495 return conf
->Display
->Extensions
.NOK_texture_from_pixmap
;
496 case EGL_FRAMEBUFFER_TARGET_ANDROID
:
497 return conf
->Display
->Extensions
.ANDROID_framebuffer_target
;
498 case EGL_RECORDABLE_ANDROID
:
499 return conf
->Display
->Extensions
.ANDROID_recordable
;
508 * Initialize a criteria config from the given attribute list.
509 * Return EGL_FALSE if any of the attribute is invalid.
512 _eglParseConfigAttribList(_EGLConfig
*conf
, _EGLDisplay
*dpy
,
513 const EGLint
*attrib_list
)
517 _eglInitConfig(conf
, dpy
, EGL_DONT_CARE
);
519 /* reset to default values */
520 for (i
= 0; i
< ARRAY_SIZE(_eglValidationTable
); i
++) {
521 attr
= _eglValidationTable
[i
].attr
;
522 val
= _eglValidationTable
[i
].default_value
;
523 _eglSetConfigKey(conf
, attr
, val
);
527 for (i
= 0; attrib_list
&& attrib_list
[i
] != EGL_NONE
; i
+= 2) {
528 attr
= attrib_list
[i
];
529 val
= attrib_list
[i
+ 1];
531 if (!_eglIsConfigAttribValid(conf
, attr
))
534 _eglSetConfigKey(conf
, attr
, val
);
537 if (!_eglValidateConfig(conf
, EGL_TRUE
))
540 /* EGL_LEVEL and EGL_MATCH_NATIVE_PIXMAP cannot be EGL_DONT_CARE */
541 if (conf
->Level
== EGL_DONT_CARE
||
542 conf
->MatchNativePixmap
== EGL_DONT_CARE
)
545 /* ignore other attributes when EGL_CONFIG_ID is given */
546 if (conf
->ConfigID
!= EGL_DONT_CARE
) {
547 for (i
= 0; i
< ARRAY_SIZE(_eglValidationTable
); i
++) {
548 attr
= _eglValidationTable
[i
].attr
;
549 if (attr
!= EGL_CONFIG_ID
)
550 _eglSetConfigKey(conf
, attr
, EGL_DONT_CARE
);
554 if (!(conf
->SurfaceType
& EGL_WINDOW_BIT
))
555 conf
->NativeVisualType
= EGL_DONT_CARE
;
557 if (conf
->TransparentType
== EGL_NONE
) {
558 conf
->TransparentRedValue
= EGL_DONT_CARE
;
559 conf
->TransparentGreenValue
= EGL_DONT_CARE
;
560 conf
->TransparentBlueValue
= EGL_DONT_CARE
;
569 * Decide the ordering of conf1 and conf2, under the given criteria.
570 * When compare_id is true, this implements the algorithm described
571 * in "Sorting of EGLConfigs". When compare_id is false,
572 * EGL_CONFIG_ID is not compared.
574 * It returns a negative integer if conf1 is considered to come
575 * before conf2; a positive integer if conf2 is considered to come
576 * before conf1; zero if the ordering cannot be decided.
578 * Note that EGL_NATIVE_VISUAL_TYPE is platform-dependent and is
582 _eglCompareConfigs(const _EGLConfig
*conf1
, const _EGLConfig
*conf2
,
583 const _EGLConfig
*criteria
, EGLBoolean compare_id
)
585 const EGLint compare_attribs
[] = {
599 /* the enum values have the desired ordering */
600 STATIC_ASSERT(EGL_NONE
< EGL_SLOW_CONFIG
);
601 STATIC_ASSERT(EGL_SLOW_CONFIG
< EGL_NON_CONFORMANT_CONFIG
);
602 val1
= conf1
->ConfigCaveat
- conf2
->ConfigCaveat
;
606 /* the enum values have the desired ordering */
607 STATIC_ASSERT(EGL_RGB_BUFFER
< EGL_LUMINANCE_BUFFER
);
608 val1
= conf1
->ColorBufferType
- conf2
->ColorBufferType
;
614 if (conf1
->ColorBufferType
== EGL_RGB_BUFFER
) {
615 if (criteria
->RedSize
> 0) {
616 val1
+= conf1
->RedSize
;
617 val2
+= conf2
->RedSize
;
619 if (criteria
->GreenSize
> 0) {
620 val1
+= conf1
->GreenSize
;
621 val2
+= conf2
->GreenSize
;
623 if (criteria
->BlueSize
> 0) {
624 val1
+= conf1
->BlueSize
;
625 val2
+= conf2
->BlueSize
;
629 if (criteria
->LuminanceSize
> 0) {
630 val1
+= conf1
->LuminanceSize
;
631 val2
+= conf2
->LuminanceSize
;
634 if (criteria
->AlphaSize
> 0) {
635 val1
+= conf1
->AlphaSize
;
636 val2
+= conf2
->AlphaSize
;
640 /* assume the default criteria, which gives no specific ordering */
644 /* for color bits, larger one is preferred */
646 return (val2
- val1
);
648 for (i
= 0; i
< ARRAY_SIZE(compare_attribs
); i
++) {
649 val1
= _eglGetConfigKey(conf1
, compare_attribs
[i
]);
650 val2
= _eglGetConfigKey(conf2
, compare_attribs
[i
]);
652 return (val1
- val2
);
655 /* EGL_NATIVE_VISUAL_TYPE cannot be compared here */
657 return (compare_id
) ? (conf1
->ConfigID
- conf2
->ConfigID
) : 0;
662 void _eglSwapConfigs(const _EGLConfig
**conf1
, const _EGLConfig
**conf2
)
664 const _EGLConfig
*tmp
= *conf1
;
671 * Quick sort an array of configs. This differs from the standard
672 * qsort() in that the compare function accepts an additional
676 _eglSortConfigs(const _EGLConfig
**configs
, EGLint count
,
677 EGLint (*compare
)(const _EGLConfig
*, const _EGLConfig
*,
681 const EGLint pivot
= 0;
687 _eglSwapConfigs(&configs
[pivot
], &configs
[count
/ 2]);
691 while (i
< count
&& compare(configs
[i
], configs
[pivot
], priv_data
) < 0)
693 while (compare(configs
[j
], configs
[pivot
], priv_data
) > 0)
696 _eglSwapConfigs(&configs
[i
], &configs
[j
]);
706 _eglSwapConfigs(&configs
[pivot
], &configs
[j
]);
708 _eglSortConfigs(configs
, j
, compare
, priv_data
);
709 _eglSortConfigs(configs
+ i
, count
- i
, compare
, priv_data
);
714 * A helper function for implementing eglChooseConfig. See _eglFilterArray and
715 * _eglSortConfigs for the meanings of match and compare.
718 _eglFilterConfigArray(_EGLArray
*array
, EGLConfig
*configs
,
719 EGLint config_size
, EGLint
*num_configs
,
720 EGLBoolean (*match
)(const _EGLConfig
*, void *),
721 EGLint (*compare
)(const _EGLConfig
*, const _EGLConfig
*,
725 _EGLConfig
**configList
;
729 return _eglError(EGL_BAD_PARAMETER
, "eglChooseConfig");
731 /* get the number of matched configs */
732 count
= _eglFilterArray(array
, NULL
, 0,
733 (_EGLArrayForEach
) match
, priv_data
);
735 *num_configs
= count
;
739 configList
= malloc(sizeof(*configList
) * count
);
741 return _eglError(EGL_BAD_ALLOC
, "eglChooseConfig(out of memory)");
743 /* get the matched configs */
744 _eglFilterArray(array
, (void **) configList
, count
,
745 (_EGLArrayForEach
) match
, priv_data
);
747 /* perform sorting of configs */
748 if (configs
&& count
) {
749 _eglSortConfigs((const _EGLConfig
**) configList
, count
,
751 count
= MIN2(count
, config_size
);
752 for (i
= 0; i
< count
; i
++)
753 configs
[i
] = _eglGetConfigHandle(configList
[i
]);
758 *num_configs
= count
;
765 _eglFallbackMatch(const _EGLConfig
*conf
, void *priv_data
)
767 return _eglMatchConfig(conf
, (const _EGLConfig
*) priv_data
);
772 _eglFallbackCompare(const _EGLConfig
*conf1
, const _EGLConfig
*conf2
,
775 return _eglCompareConfigs(conf1
, conf2
,
776 (const _EGLConfig
*) priv_data
, EGL_TRUE
);
781 * Typical fallback routine for eglChooseConfig
784 _eglChooseConfig(_EGLDriver
*drv
, _EGLDisplay
*disp
, const EGLint
*attrib_list
,
785 EGLConfig
*configs
, EGLint config_size
, EGLint
*num_configs
)
789 if (!_eglParseConfigAttribList(&criteria
, disp
, attrib_list
))
790 return _eglError(EGL_BAD_ATTRIBUTE
, "eglChooseConfig");
792 return _eglFilterConfigArray(disp
->Configs
,
793 configs
, config_size
, num_configs
,
794 _eglFallbackMatch
, _eglFallbackCompare
,
800 * Fallback for eglGetConfigAttrib.
803 _eglGetConfigAttrib(_EGLDriver
*drv
, _EGLDisplay
*dpy
, _EGLConfig
*conf
,
804 EGLint attribute
, EGLint
*value
)
806 if (!_eglIsConfigAttribValid(conf
, attribute
))
807 return _eglError(EGL_BAD_ATTRIBUTE
, "eglGetConfigAttrib");
809 /* nonqueryable attributes */
811 case EGL_MATCH_NATIVE_PIXMAP
:
812 return _eglError(EGL_BAD_ATTRIBUTE
, "eglGetConfigAttrib");
819 return _eglError(EGL_BAD_PARAMETER
, "eglGetConfigAttrib");
821 *value
= _eglGetConfigKey(conf
, attribute
);
827 _eglFlattenConfig(void *elem
, void *buffer
)
829 _EGLConfig
*conf
= (_EGLConfig
*) elem
;
830 EGLConfig
*handle
= (EGLConfig
*) buffer
;
831 *handle
= _eglGetConfigHandle(conf
);
836 * Fallback for eglGetConfigs.
839 _eglGetConfigs(_EGLDriver
*drv
, _EGLDisplay
*disp
, EGLConfig
*configs
,
840 EGLint config_size
, EGLint
*num_config
)
843 return _eglError(EGL_BAD_PARAMETER
, "eglGetConfigs");
845 *num_config
= _eglFlattenArray(disp
->Configs
, (void *) configs
,
846 sizeof(configs
[0]), config_size
, _eglFlattenConfig
);