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
;
71 conf
->ComponentType
= EGL_COLOR_COMPONENT_TYPE_FIXED_EXT
;
76 * Link a config to its display and return the handle of the link.
77 * The handle can be passed to client directly.
79 * Note that we just save the ptr to the config (we don't copy the config).
82 _eglLinkConfig(_EGLConfig
*conf
)
84 _EGLDisplay
*dpy
= conf
->Display
;
88 assert(conf
->ConfigID
> 0);
91 dpy
->Configs
= _eglCreateArray("Config", 16);
93 return (EGLConfig
) NULL
;
96 _eglAppendArray(dpy
->Configs
, (void *) conf
);
98 return (EGLConfig
) conf
;
103 * Lookup a handle to find the linked config.
104 * Return NULL if the handle has no corresponding linked config.
107 _eglLookupConfig(EGLConfig config
, _EGLDisplay
*dpy
)
114 conf
= (_EGLConfig
*) _eglFindArray(dpy
->Configs
, (void *) config
);
116 assert(conf
->Display
== dpy
);
127 ATTRIB_TYPE_PSEUDO
, /* non-queryable */
128 ATTRIB_TYPE_PLATFORM
, /* platform-dependent */
132 ATTRIB_CRITERION_EXACT
,
133 ATTRIB_CRITERION_ATLEAST
,
134 ATTRIB_CRITERION_MASK
,
135 ATTRIB_CRITERION_SPECIAL
,
136 ATTRIB_CRITERION_IGNORE
140 /* EGL spec Table 3.1 and 3.4 */
141 static const struct {
144 enum criterion criterion
;
145 EGLint default_value
;
146 } _eglValidationTable
[] =
149 { EGL_BUFFER_SIZE
, ATTRIB_TYPE_INTEGER
,
150 ATTRIB_CRITERION_ATLEAST
,
152 { EGL_RED_SIZE
, ATTRIB_TYPE_INTEGER
,
153 ATTRIB_CRITERION_ATLEAST
,
155 { EGL_GREEN_SIZE
, ATTRIB_TYPE_INTEGER
,
156 ATTRIB_CRITERION_ATLEAST
,
158 { EGL_BLUE_SIZE
, ATTRIB_TYPE_INTEGER
,
159 ATTRIB_CRITERION_ATLEAST
,
161 { EGL_LUMINANCE_SIZE
, ATTRIB_TYPE_INTEGER
,
162 ATTRIB_CRITERION_ATLEAST
,
164 { EGL_ALPHA_SIZE
, ATTRIB_TYPE_INTEGER
,
165 ATTRIB_CRITERION_ATLEAST
,
167 { EGL_ALPHA_MASK_SIZE
, ATTRIB_TYPE_INTEGER
,
168 ATTRIB_CRITERION_ATLEAST
,
170 { EGL_BIND_TO_TEXTURE_RGB
, ATTRIB_TYPE_BOOLEAN
,
171 ATTRIB_CRITERION_EXACT
,
173 { EGL_BIND_TO_TEXTURE_RGBA
, ATTRIB_TYPE_BOOLEAN
,
174 ATTRIB_CRITERION_EXACT
,
176 { EGL_COLOR_BUFFER_TYPE
, ATTRIB_TYPE_ENUM
,
177 ATTRIB_CRITERION_EXACT
,
179 { EGL_CONFIG_CAVEAT
, ATTRIB_TYPE_ENUM
,
180 ATTRIB_CRITERION_EXACT
,
182 { EGL_CONFIG_ID
, ATTRIB_TYPE_INTEGER
,
183 ATTRIB_CRITERION_EXACT
,
185 { EGL_CONFORMANT
, ATTRIB_TYPE_BITMASK
,
186 ATTRIB_CRITERION_MASK
,
188 { EGL_DEPTH_SIZE
, ATTRIB_TYPE_INTEGER
,
189 ATTRIB_CRITERION_ATLEAST
,
191 { EGL_LEVEL
, ATTRIB_TYPE_PLATFORM
,
192 ATTRIB_CRITERION_EXACT
,
194 { EGL_MAX_PBUFFER_WIDTH
, ATTRIB_TYPE_INTEGER
,
195 ATTRIB_CRITERION_IGNORE
,
197 { EGL_MAX_PBUFFER_HEIGHT
, ATTRIB_TYPE_INTEGER
,
198 ATTRIB_CRITERION_IGNORE
,
200 { EGL_MAX_PBUFFER_PIXELS
, ATTRIB_TYPE_INTEGER
,
201 ATTRIB_CRITERION_IGNORE
,
203 { EGL_MAX_SWAP_INTERVAL
, ATTRIB_TYPE_INTEGER
,
204 ATTRIB_CRITERION_EXACT
,
206 { EGL_MIN_SWAP_INTERVAL
, ATTRIB_TYPE_INTEGER
,
207 ATTRIB_CRITERION_EXACT
,
209 { EGL_NATIVE_RENDERABLE
, ATTRIB_TYPE_BOOLEAN
,
210 ATTRIB_CRITERION_EXACT
,
212 { EGL_NATIVE_VISUAL_ID
, ATTRIB_TYPE_PLATFORM
,
213 ATTRIB_CRITERION_IGNORE
,
215 { EGL_NATIVE_VISUAL_TYPE
, ATTRIB_TYPE_PLATFORM
,
216 ATTRIB_CRITERION_EXACT
,
218 { EGL_RENDERABLE_TYPE
, ATTRIB_TYPE_BITMASK
,
219 ATTRIB_CRITERION_MASK
,
221 { EGL_SAMPLE_BUFFERS
, ATTRIB_TYPE_INTEGER
,
222 ATTRIB_CRITERION_ATLEAST
,
224 { EGL_SAMPLES
, ATTRIB_TYPE_INTEGER
,
225 ATTRIB_CRITERION_ATLEAST
,
227 { EGL_STENCIL_SIZE
, ATTRIB_TYPE_INTEGER
,
228 ATTRIB_CRITERION_ATLEAST
,
230 { EGL_SURFACE_TYPE
, ATTRIB_TYPE_BITMASK
,
231 ATTRIB_CRITERION_MASK
,
233 { EGL_TRANSPARENT_TYPE
, ATTRIB_TYPE_ENUM
,
234 ATTRIB_CRITERION_EXACT
,
236 { EGL_TRANSPARENT_RED_VALUE
, ATTRIB_TYPE_INTEGER
,
237 ATTRIB_CRITERION_EXACT
,
239 { EGL_TRANSPARENT_GREEN_VALUE
, ATTRIB_TYPE_INTEGER
,
240 ATTRIB_CRITERION_EXACT
,
242 { EGL_TRANSPARENT_BLUE_VALUE
, ATTRIB_TYPE_INTEGER
,
243 ATTRIB_CRITERION_EXACT
,
245 { EGL_MATCH_NATIVE_PIXMAP
, ATTRIB_TYPE_PSEUDO
,
246 ATTRIB_CRITERION_SPECIAL
,
249 { EGL_Y_INVERTED_NOK
, ATTRIB_TYPE_BOOLEAN
,
250 ATTRIB_CRITERION_EXACT
,
252 { EGL_FRAMEBUFFER_TARGET_ANDROID
, ATTRIB_TYPE_BOOLEAN
,
253 ATTRIB_CRITERION_EXACT
,
255 { EGL_RECORDABLE_ANDROID
, ATTRIB_TYPE_BOOLEAN
,
256 ATTRIB_CRITERION_EXACT
,
258 { EGL_COLOR_COMPONENT_TYPE_EXT
, ATTRIB_TYPE_ENUM
,
259 ATTRIB_CRITERION_EXACT
,
260 EGL_COLOR_COMPONENT_TYPE_FIXED_EXT
},
265 * Return true if a config is valid. When for_matching is true,
266 * EGL_DONT_CARE is accepted as a valid attribute value, and checks
267 * for conflicting attribute values are skipped.
269 * Note that some attributes are platform-dependent and are not
273 _eglValidateConfig(const _EGLConfig
*conf
, EGLBoolean for_matching
)
276 EGLBoolean valid
= EGL_TRUE
;
278 /* check attributes by their types */
279 for (i
= 0; i
< ARRAY_SIZE(_eglValidationTable
); i
++) {
282 attr
= _eglValidationTable
[i
].attr
;
283 val
= _eglGetConfigKey(conf
, attr
);
285 switch (_eglValidationTable
[i
].type
) {
286 case ATTRIB_TYPE_INTEGER
:
289 /* config id must be positive */
293 case EGL_SAMPLE_BUFFERS
:
294 /* there can be at most 1 sample buffer */
295 if (val
> 1 || val
< 0)
304 case ATTRIB_TYPE_BOOLEAN
:
305 if (val
!= EGL_TRUE
&& val
!= EGL_FALSE
)
308 case ATTRIB_TYPE_ENUM
:
310 case EGL_CONFIG_CAVEAT
:
311 if (val
!= EGL_NONE
&& val
!= EGL_SLOW_CONFIG
&&
312 val
!= EGL_NON_CONFORMANT_CONFIG
)
315 case EGL_TRANSPARENT_TYPE
:
316 if (val
!= EGL_NONE
&& val
!= EGL_TRANSPARENT_RGB
)
319 case EGL_COLOR_BUFFER_TYPE
:
320 if (val
!= EGL_RGB_BUFFER
&& val
!= EGL_LUMINANCE_BUFFER
)
323 case EGL_COLOR_COMPONENT_TYPE_EXT
:
324 if (val
!= EGL_COLOR_COMPONENT_TYPE_FIXED_EXT
&&
325 val
!= EGL_COLOR_COMPONENT_TYPE_FLOAT_EXT
)
333 case ATTRIB_TYPE_BITMASK
:
335 case EGL_SURFACE_TYPE
:
336 mask
= EGL_PBUFFER_BIT
|
339 EGL_VG_COLORSPACE_LINEAR_BIT
|
340 EGL_VG_ALPHA_FORMAT_PRE_BIT
|
341 EGL_MULTISAMPLE_RESOLVE_BOX_BIT
|
342 EGL_SWAP_BEHAVIOR_PRESERVED_BIT
;
344 case EGL_RENDERABLE_TYPE
:
346 mask
= EGL_OPENGL_ES_BIT
|
349 EGL_OPENGL_ES3_BIT_KHR
|
360 case ATTRIB_TYPE_PLATFORM
:
361 /* unable to check platform-dependent attributes here */
363 case ATTRIB_TYPE_PSEUDO
:
364 /* pseudo attributes should not be set */
370 if (!valid
&& for_matching
) {
371 /* accept EGL_DONT_CARE as a valid value */
372 if (val
== EGL_DONT_CARE
)
374 if (_eglValidationTable
[i
].criterion
== ATTRIB_CRITERION_SPECIAL
)
379 "attribute 0x%04x has an invalid value 0x%x", attr
, val
);
384 /* any invalid attribute value should have been catched */
385 if (!valid
|| for_matching
)
388 /* now check for conflicting attribute values */
390 switch (conf
->ColorBufferType
) {
392 if (conf
->LuminanceSize
)
394 if (conf
->RedSize
+ conf
->GreenSize
+
395 conf
->BlueSize
+ conf
->AlphaSize
!= conf
->BufferSize
)
398 case EGL_LUMINANCE_BUFFER
:
399 if (conf
->RedSize
|| conf
->GreenSize
|| conf
->BlueSize
)
401 if (conf
->LuminanceSize
+ conf
->AlphaSize
!= conf
->BufferSize
)
406 _eglLog(_EGL_DEBUG
, "conflicting color buffer type and channel sizes");
410 if (!conf
->SampleBuffers
&& conf
->Samples
)
413 _eglLog(_EGL_DEBUG
, "conflicting samples and sample buffers");
417 if (!(conf
->SurfaceType
& EGL_WINDOW_BIT
)) {
418 if (conf
->NativeVisualID
!= 0 || conf
->NativeVisualType
!= EGL_NONE
)
421 if (!(conf
->SurfaceType
& EGL_PBUFFER_BIT
)) {
422 if (conf
->BindToTextureRGB
|| conf
->BindToTextureRGBA
)
426 _eglLog(_EGL_DEBUG
, "conflicting surface type and native visual/texture binding");
435 * Return true if a config matches the criteria. This and
436 * _eglParseConfigAttribList together implement the algorithm
437 * described in "Selection of EGLConfigs".
439 * Note that attributes that are special (currently, only
440 * EGL_MATCH_NATIVE_PIXMAP) are ignored.
443 _eglMatchConfig(const _EGLConfig
*conf
, const _EGLConfig
*criteria
)
446 EGLBoolean matched
= EGL_TRUE
;
448 for (i
= 0; i
< ARRAY_SIZE(_eglValidationTable
); i
++) {
450 if (_eglValidationTable
[i
].criterion
== ATTRIB_CRITERION_IGNORE
)
453 attr
= _eglValidationTable
[i
].attr
;
454 cmp
= _eglGetConfigKey(criteria
, attr
);
455 if (cmp
== EGL_DONT_CARE
)
458 val
= _eglGetConfigKey(conf
, attr
);
459 switch (_eglValidationTable
[i
].criterion
) {
460 case ATTRIB_CRITERION_EXACT
:
464 case ATTRIB_CRITERION_ATLEAST
:
468 case ATTRIB_CRITERION_MASK
:
469 if ((val
& cmp
) != cmp
)
472 case ATTRIB_CRITERION_SPECIAL
:
475 case ATTRIB_CRITERION_IGNORE
:
476 unreachable("already handled above");
482 /* only print the common errors when DEBUG is not defined */
483 if (attr
!= EGL_RENDERABLE_TYPE
)
487 "the value (0x%x) of attribute 0x%04x did not meet the criteria (0x%x)",
496 static inline EGLBoolean
497 _eglIsConfigAttribValid(_EGLConfig
*conf
, EGLint attr
)
499 if (_eglOffsetOfConfig(attr
) < 0)
503 case EGL_Y_INVERTED_NOK
:
504 return conf
->Display
->Extensions
.NOK_texture_from_pixmap
;
505 case EGL_FRAMEBUFFER_TARGET_ANDROID
:
506 return conf
->Display
->Extensions
.ANDROID_framebuffer_target
;
507 case EGL_RECORDABLE_ANDROID
:
508 return conf
->Display
->Extensions
.ANDROID_recordable
;
517 * Initialize a criteria config from the given attribute list.
518 * Return EGL_FALSE if any of the attribute is invalid.
521 _eglParseConfigAttribList(_EGLConfig
*conf
, _EGLDisplay
*dpy
,
522 const EGLint
*attrib_list
)
526 _eglInitConfig(conf
, dpy
, EGL_DONT_CARE
);
528 /* reset to default values */
529 for (i
= 0; i
< ARRAY_SIZE(_eglValidationTable
); i
++) {
530 attr
= _eglValidationTable
[i
].attr
;
531 val
= _eglValidationTable
[i
].default_value
;
532 _eglSetConfigKey(conf
, attr
, val
);
536 for (i
= 0; attrib_list
&& attrib_list
[i
] != EGL_NONE
; i
+= 2) {
537 attr
= attrib_list
[i
];
538 val
= attrib_list
[i
+ 1];
540 if (!_eglIsConfigAttribValid(conf
, attr
))
543 _eglSetConfigKey(conf
, attr
, val
);
546 if (!_eglValidateConfig(conf
, EGL_TRUE
))
549 /* EGL_LEVEL and EGL_MATCH_NATIVE_PIXMAP cannot be EGL_DONT_CARE */
550 if (conf
->Level
== EGL_DONT_CARE
||
551 conf
->MatchNativePixmap
== EGL_DONT_CARE
)
554 /* ignore other attributes when EGL_CONFIG_ID is given */
555 if (conf
->ConfigID
!= EGL_DONT_CARE
) {
556 for (i
= 0; i
< ARRAY_SIZE(_eglValidationTable
); i
++) {
557 attr
= _eglValidationTable
[i
].attr
;
558 if (attr
!= EGL_CONFIG_ID
)
559 _eglSetConfigKey(conf
, attr
, EGL_DONT_CARE
);
563 if (!(conf
->SurfaceType
& EGL_WINDOW_BIT
))
564 conf
->NativeVisualType
= EGL_DONT_CARE
;
566 if (conf
->TransparentType
== EGL_NONE
) {
567 conf
->TransparentRedValue
= EGL_DONT_CARE
;
568 conf
->TransparentGreenValue
= EGL_DONT_CARE
;
569 conf
->TransparentBlueValue
= EGL_DONT_CARE
;
578 * Decide the ordering of conf1 and conf2, under the given criteria.
579 * When compare_id is true, this implements the algorithm described
580 * in "Sorting of EGLConfigs". When compare_id is false,
581 * EGL_CONFIG_ID is not compared.
583 * It returns a negative integer if conf1 is considered to come
584 * before conf2; a positive integer if conf2 is considered to come
585 * before conf1; zero if the ordering cannot be decided.
587 * Note that EGL_NATIVE_VISUAL_TYPE is platform-dependent and is
591 _eglCompareConfigs(const _EGLConfig
*conf1
, const _EGLConfig
*conf2
,
592 const _EGLConfig
*criteria
, EGLBoolean compare_id
)
594 const EGLint compare_attribs
[] = {
608 /* the enum values have the desired ordering */
609 STATIC_ASSERT(EGL_NONE
< EGL_SLOW_CONFIG
);
610 STATIC_ASSERT(EGL_SLOW_CONFIG
< EGL_NON_CONFORMANT_CONFIG
);
611 val1
= conf1
->ConfigCaveat
- conf2
->ConfigCaveat
;
615 /* the enum values have the desired ordering */
616 STATIC_ASSERT(EGL_RGB_BUFFER
< EGL_LUMINANCE_BUFFER
);
617 val1
= conf1
->ColorBufferType
- conf2
->ColorBufferType
;
623 if (conf1
->ColorBufferType
== EGL_RGB_BUFFER
) {
624 if (criteria
->RedSize
> 0) {
625 val1
+= conf1
->RedSize
;
626 val2
+= conf2
->RedSize
;
628 if (criteria
->GreenSize
> 0) {
629 val1
+= conf1
->GreenSize
;
630 val2
+= conf2
->GreenSize
;
632 if (criteria
->BlueSize
> 0) {
633 val1
+= conf1
->BlueSize
;
634 val2
+= conf2
->BlueSize
;
638 if (criteria
->LuminanceSize
> 0) {
639 val1
+= conf1
->LuminanceSize
;
640 val2
+= conf2
->LuminanceSize
;
643 if (criteria
->AlphaSize
> 0) {
644 val1
+= conf1
->AlphaSize
;
645 val2
+= conf2
->AlphaSize
;
649 /* assume the default criteria, which gives no specific ordering */
653 /* for color bits, larger one is preferred */
655 return (val2
- val1
);
657 for (i
= 0; i
< ARRAY_SIZE(compare_attribs
); i
++) {
658 val1
= _eglGetConfigKey(conf1
, compare_attribs
[i
]);
659 val2
= _eglGetConfigKey(conf2
, compare_attribs
[i
]);
661 return (val1
- val2
);
664 /* EGL_NATIVE_VISUAL_TYPE cannot be compared here */
666 return (compare_id
) ? (conf1
->ConfigID
- conf2
->ConfigID
) : 0;
671 void _eglSwapConfigs(const _EGLConfig
**conf1
, const _EGLConfig
**conf2
)
673 const _EGLConfig
*tmp
= *conf1
;
680 * Quick sort an array of configs. This differs from the standard
681 * qsort() in that the compare function accepts an additional
685 _eglSortConfigs(const _EGLConfig
**configs
, EGLint count
,
686 EGLint (*compare
)(const _EGLConfig
*, const _EGLConfig
*,
690 const EGLint pivot
= 0;
696 _eglSwapConfigs(&configs
[pivot
], &configs
[count
/ 2]);
700 while (i
< count
&& compare(configs
[i
], configs
[pivot
], priv_data
) < 0)
702 while (compare(configs
[j
], configs
[pivot
], priv_data
) > 0)
705 _eglSwapConfigs(&configs
[i
], &configs
[j
]);
715 _eglSwapConfigs(&configs
[pivot
], &configs
[j
]);
717 _eglSortConfigs(configs
, j
, compare
, priv_data
);
718 _eglSortConfigs(configs
+ i
, count
- i
, compare
, priv_data
);
723 * A helper function for implementing eglChooseConfig. See _eglFilterArray and
724 * _eglSortConfigs for the meanings of match and compare.
727 _eglFilterConfigArray(_EGLArray
*array
, EGLConfig
*configs
,
728 EGLint config_size
, EGLint
*num_configs
,
729 EGLBoolean (*match
)(const _EGLConfig
*, void *),
730 EGLint (*compare
)(const _EGLConfig
*, const _EGLConfig
*,
734 _EGLConfig
**configList
;
738 return _eglError(EGL_BAD_PARAMETER
, "eglChooseConfig");
740 /* get the number of matched configs */
741 count
= _eglFilterArray(array
, NULL
, 0,
742 (_EGLArrayForEach
) match
, priv_data
);
744 *num_configs
= count
;
748 configList
= malloc(sizeof(*configList
) * count
);
750 return _eglError(EGL_BAD_ALLOC
, "eglChooseConfig(out of memory)");
752 /* get the matched configs */
753 _eglFilterArray(array
, (void **) configList
, count
,
754 (_EGLArrayForEach
) match
, priv_data
);
756 /* perform sorting of configs */
757 if (configs
&& count
) {
758 _eglSortConfigs((const _EGLConfig
**) configList
, count
,
760 count
= MIN2(count
, config_size
);
761 for (i
= 0; i
< count
; i
++)
762 configs
[i
] = _eglGetConfigHandle(configList
[i
]);
767 *num_configs
= count
;
774 _eglFallbackMatch(const _EGLConfig
*conf
, void *priv_data
)
776 return _eglMatchConfig(conf
, (const _EGLConfig
*) priv_data
);
781 _eglFallbackCompare(const _EGLConfig
*conf1
, const _EGLConfig
*conf2
,
784 return _eglCompareConfigs(conf1
, conf2
,
785 (const _EGLConfig
*) priv_data
, EGL_TRUE
);
790 * Typical fallback routine for eglChooseConfig
793 _eglChooseConfig(_EGLDriver
*drv
, _EGLDisplay
*disp
, const EGLint
*attrib_list
,
794 EGLConfig
*configs
, EGLint config_size
, EGLint
*num_configs
)
798 if (!_eglParseConfigAttribList(&criteria
, disp
, attrib_list
))
799 return _eglError(EGL_BAD_ATTRIBUTE
, "eglChooseConfig");
801 return _eglFilterConfigArray(disp
->Configs
,
802 configs
, config_size
, num_configs
,
803 _eglFallbackMatch
, _eglFallbackCompare
,
809 * Fallback for eglGetConfigAttrib.
812 _eglGetConfigAttrib(_EGLDriver
*drv
, _EGLDisplay
*dpy
, _EGLConfig
*conf
,
813 EGLint attribute
, EGLint
*value
)
815 if (!_eglIsConfigAttribValid(conf
, attribute
))
816 return _eglError(EGL_BAD_ATTRIBUTE
, "eglGetConfigAttrib");
818 /* nonqueryable attributes */
820 case EGL_MATCH_NATIVE_PIXMAP
:
821 return _eglError(EGL_BAD_ATTRIBUTE
, "eglGetConfigAttrib");
828 return _eglError(EGL_BAD_PARAMETER
, "eglGetConfigAttrib");
830 *value
= _eglGetConfigKey(conf
, attribute
);
836 _eglFlattenConfig(void *elem
, void *buffer
)
838 _EGLConfig
*conf
= (_EGLConfig
*) elem
;
839 EGLConfig
*handle
= (EGLConfig
*) buffer
;
840 *handle
= _eglGetConfigHandle(conf
);
845 * Fallback for eglGetConfigs.
848 _eglGetConfigs(_EGLDriver
*drv
, _EGLDisplay
*disp
, EGLConfig
*configs
,
849 EGLint config_size
, EGLint
*num_config
)
852 return _eglError(EGL_BAD_PARAMETER
, "eglGetConfigs");
854 *num_config
= _eglFlattenArray(disp
->Configs
, (void *) configs
,
855 sizeof(configs
[0]), config_size
, _eglFlattenConfig
);