2 * EGL Configuration (pixel format) functions.
10 #include "eglconfig.h"
11 #include "egldisplay.h"
12 #include "egldriver.h"
13 #include "eglglobals.h"
17 #define MIN2(A, B) (((A) < (B)) ? (A) : (B))
18 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
22 * Init the given _EGLconfig to default values.
23 * \param id the configuration's ID.
25 * Note that id must be positive for the config to be valid.
26 * It is also recommended that when there are N configs, their
27 * IDs are from 1 to N respectively.
30 _eglInitConfig(_EGLConfig
*config
, EGLint id
)
32 memset(config
, 0, sizeof(*config
));
34 /* some attributes take non-zero default values */
35 SET_CONFIG_ATTRIB(config
, EGL_CONFIG_ID
, id
);
36 SET_CONFIG_ATTRIB(config
, EGL_CONFIG_CAVEAT
, EGL_NONE
);
37 SET_CONFIG_ATTRIB(config
, EGL_TRANSPARENT_TYPE
, EGL_NONE
);
38 SET_CONFIG_ATTRIB(config
, EGL_NATIVE_VISUAL_TYPE
, EGL_NONE
);
39 #ifdef EGL_VERSION_1_2
40 SET_CONFIG_ATTRIB(config
, EGL_COLOR_BUFFER_TYPE
, EGL_RGB_BUFFER
);
41 #endif /* EGL_VERSION_1_2 */
46 * Link a config to a display and return the handle of the link.
47 * The handle can be passed to client directly.
49 * Note that we just save the ptr to the config (we don't copy the config).
52 _eglAddConfig(_EGLDisplay
*dpy
, _EGLConfig
*conf
)
57 assert(GET_CONFIG_ATTRIB(conf
, EGL_CONFIG_ID
) > 0);
59 configs
= dpy
->Configs
;
60 if (dpy
->NumConfigs
>= dpy
->MaxConfigs
) {
61 EGLint new_size
= dpy
->MaxConfigs
+ 16;
62 assert(dpy
->NumConfigs
< new_size
);
64 configs
= realloc(dpy
->Configs
, new_size
* sizeof(dpy
->Configs
[0]));
66 return (EGLConfig
) NULL
;
68 dpy
->Configs
= configs
;
69 dpy
->MaxConfigs
= new_size
;
73 dpy
->Configs
[dpy
->NumConfigs
++] = conf
;
75 return (EGLConfig
) conf
;
79 #ifndef _EGL_SKIP_HANDLE_CHECK
83 _eglCheckConfigHandle(EGLConfig config
, _EGLDisplay
*dpy
)
85 _EGLConfig
*conf
= NULL
;
88 for (i
= 0; dpy
&& i
< dpy
->NumConfigs
; i
++) {
89 conf
= dpy
->Configs
[i
];
90 if (conf
== (_EGLConfig
*) config
) {
91 assert(conf
->Display
== dpy
);
96 return (conf
!= NULL
);
100 #endif /* _EGL_SKIP_HANDLE_CHECK */
109 ATTRIB_TYPE_PSEUDO
, /* non-queryable */
110 ATTRIB_TYPE_PLATFORM
, /* platform-dependent */
112 ATTRIB_CRITERION_EXACT
,
113 ATTRIB_CRITERION_ATLEAST
,
114 ATTRIB_CRITERION_MASK
,
115 ATTRIB_CRITERION_SPECIAL
,
116 ATTRIB_CRITERION_IGNORE
,
120 /* EGL spec Table 3.1 and 3.4 */
121 static const struct {
125 EGLint default_value
;
126 } _eglValidationTable
[] =
128 { EGL_BUFFER_SIZE
, ATTRIB_TYPE_INTEGER
,
129 ATTRIB_CRITERION_ATLEAST
,
131 { EGL_RED_SIZE
, ATTRIB_TYPE_INTEGER
,
132 ATTRIB_CRITERION_ATLEAST
,
134 { EGL_GREEN_SIZE
, ATTRIB_TYPE_INTEGER
,
135 ATTRIB_CRITERION_ATLEAST
,
137 { EGL_BLUE_SIZE
, ATTRIB_TYPE_INTEGER
,
138 ATTRIB_CRITERION_ATLEAST
,
140 { EGL_LUMINANCE_SIZE
, ATTRIB_TYPE_INTEGER
,
141 ATTRIB_CRITERION_ATLEAST
,
143 { EGL_ALPHA_SIZE
, ATTRIB_TYPE_INTEGER
,
144 ATTRIB_CRITERION_ATLEAST
,
146 { EGL_ALPHA_MASK_SIZE
, ATTRIB_TYPE_INTEGER
,
147 ATTRIB_CRITERION_ATLEAST
,
149 { EGL_BIND_TO_TEXTURE_RGB
, ATTRIB_TYPE_BOOLEAN
,
150 ATTRIB_CRITERION_EXACT
,
152 { EGL_BIND_TO_TEXTURE_RGBA
, ATTRIB_TYPE_BOOLEAN
,
153 ATTRIB_CRITERION_EXACT
,
155 { EGL_COLOR_BUFFER_TYPE
, ATTRIB_TYPE_ENUM
,
156 ATTRIB_CRITERION_EXACT
,
158 { EGL_CONFIG_CAVEAT
, ATTRIB_TYPE_ENUM
,
159 ATTRIB_CRITERION_EXACT
,
161 { EGL_CONFIG_ID
, ATTRIB_TYPE_INTEGER
,
162 ATTRIB_CRITERION_EXACT
,
164 { EGL_CONFORMANT
, ATTRIB_TYPE_BITMASK
,
165 ATTRIB_CRITERION_MASK
,
167 { EGL_DEPTH_SIZE
, ATTRIB_TYPE_INTEGER
,
168 ATTRIB_CRITERION_ATLEAST
,
170 { EGL_LEVEL
, ATTRIB_TYPE_PLATFORM
,
171 ATTRIB_CRITERION_EXACT
,
173 { EGL_MAX_PBUFFER_WIDTH
, ATTRIB_TYPE_INTEGER
,
174 ATTRIB_CRITERION_IGNORE
,
176 { EGL_MAX_PBUFFER_HEIGHT
, ATTRIB_TYPE_INTEGER
,
177 ATTRIB_CRITERION_IGNORE
,
179 { EGL_MAX_PBUFFER_PIXELS
, ATTRIB_TYPE_INTEGER
,
180 ATTRIB_CRITERION_IGNORE
,
182 { EGL_MAX_SWAP_INTERVAL
, ATTRIB_TYPE_INTEGER
,
183 ATTRIB_CRITERION_EXACT
,
185 { EGL_MIN_SWAP_INTERVAL
, ATTRIB_TYPE_INTEGER
,
186 ATTRIB_CRITERION_EXACT
,
188 { EGL_NATIVE_RENDERABLE
, ATTRIB_TYPE_BOOLEAN
,
189 ATTRIB_CRITERION_EXACT
,
191 { EGL_NATIVE_VISUAL_ID
, ATTRIB_TYPE_PLATFORM
,
192 ATTRIB_CRITERION_IGNORE
,
194 { EGL_NATIVE_VISUAL_TYPE
, ATTRIB_TYPE_PLATFORM
,
195 ATTRIB_CRITERION_EXACT
,
197 { EGL_RENDERABLE_TYPE
, ATTRIB_TYPE_BITMASK
,
198 ATTRIB_CRITERION_MASK
,
200 { EGL_SAMPLE_BUFFERS
, ATTRIB_TYPE_INTEGER
,
201 ATTRIB_CRITERION_ATLEAST
,
203 { EGL_SAMPLES
, ATTRIB_TYPE_INTEGER
,
204 ATTRIB_CRITERION_ATLEAST
,
206 { EGL_STENCIL_SIZE
, ATTRIB_TYPE_INTEGER
,
207 ATTRIB_CRITERION_ATLEAST
,
209 { EGL_SURFACE_TYPE
, ATTRIB_TYPE_BITMASK
,
210 ATTRIB_CRITERION_MASK
,
212 { EGL_TRANSPARENT_TYPE
, ATTRIB_TYPE_ENUM
,
213 ATTRIB_CRITERION_EXACT
,
215 { EGL_TRANSPARENT_RED_VALUE
, ATTRIB_TYPE_INTEGER
,
216 ATTRIB_CRITERION_EXACT
,
218 { EGL_TRANSPARENT_GREEN_VALUE
, ATTRIB_TYPE_INTEGER
,
219 ATTRIB_CRITERION_EXACT
,
221 { EGL_TRANSPARENT_BLUE_VALUE
, ATTRIB_TYPE_INTEGER
,
222 ATTRIB_CRITERION_EXACT
,
224 /* these are not real attributes */
225 { EGL_MATCH_NATIVE_PIXMAP
, ATTRIB_TYPE_PSEUDO
,
226 ATTRIB_CRITERION_SPECIAL
,
228 { EGL_PRESERVED_RESOURCES
, ATTRIB_TYPE_PSEUDO
,
229 ATTRIB_CRITERION_IGNORE
,
231 { EGL_NONE
, ATTRIB_TYPE_PSEUDO
,
232 ATTRIB_CRITERION_IGNORE
,
238 * Return true if a config is valid. When for_matching is true,
239 * EGL_DONT_CARE is accepted as a valid attribute value, and checks
240 * for conflicting attribute values are skipped.
242 * Note that some attributes are platform-dependent and are not
246 _eglValidateConfig(const _EGLConfig
*conf
, EGLBoolean for_matching
)
249 EGLBoolean valid
= EGL_TRUE
;
250 EGLint red_size
= 0, green_size
= 0, blue_size
= 0, luminance_size
= 0;
251 EGLint alpha_size
= 0, buffer_size
= 0;
253 /* all attributes should have been listed */
254 assert(ARRAY_SIZE(_eglValidationTable
) == _EGL_CONFIG_NUM_ATTRIBS
);
256 /* check attributes by their types */
257 for (i
= 0; i
< ARRAY_SIZE(_eglValidationTable
); i
++) {
260 attr
= _eglValidationTable
[i
].attr
;
261 val
= GET_CONFIG_ATTRIB(conf
, attr
);
263 switch (_eglValidationTable
[i
].type
) {
264 case ATTRIB_TYPE_INTEGER
:
267 /* config id must be positive */
271 case EGL_SAMPLE_BUFFERS
:
272 /* there can be at most 1 sample buffer */
285 case EGL_LUMINANCE_SIZE
:
286 luminance_size
= val
;
291 case EGL_BUFFER_SIZE
:
298 case ATTRIB_TYPE_BOOLEAN
:
299 if (val
!= EGL_TRUE
&& val
!= EGL_FALSE
)
302 case ATTRIB_TYPE_ENUM
:
304 case EGL_CONFIG_CAVEAT
:
305 if (val
!= EGL_NONE
&& val
!= EGL_SLOW_CONFIG
&&
306 val
!= EGL_NON_CONFORMANT_CONFIG
)
309 case EGL_TRANSPARENT_TYPE
:
310 if (val
!= EGL_NONE
&& val
!= EGL_TRANSPARENT_RGB
)
313 case EGL_COLOR_BUFFER_TYPE
:
314 if (val
!= EGL_RGB_BUFFER
&& val
!= EGL_LUMINANCE_BUFFER
)
322 case ATTRIB_TYPE_BITMASK
:
324 case EGL_SURFACE_TYPE
:
325 mask
= EGL_PBUFFER_BIT
|
328 EGL_VG_COLORSPACE_LINEAR_BIT
|
329 EGL_VG_ALPHA_FORMAT_PRE_BIT
|
330 EGL_MULTISAMPLE_RESOLVE_BOX_BIT
|
331 EGL_SWAP_BEHAVIOR_PRESERVED_BIT
;
333 case EGL_RENDERABLE_TYPE
:
335 mask
= EGL_OPENGL_ES_BIT
|
347 case ATTRIB_TYPE_PLATFORM
:
348 /* unable to check platform-dependent attributes here */
350 case ATTRIB_TYPE_PSEUDO
:
351 /* pseudo attributes should not be set */
360 if (!valid
&& for_matching
) {
361 /* accept EGL_DONT_CARE as a valid value */
362 if (val
== EGL_DONT_CARE
)
364 if (_eglValidationTable
[i
].criterion
== ATTRIB_CRITERION_SPECIAL
)
371 /* any invalid attribute value should have been catched */
372 if (!valid
|| for_matching
)
375 /* now check for conflicting attribute values */
377 switch (GET_CONFIG_ATTRIB(conf
, EGL_COLOR_BUFFER_TYPE
)) {
381 if (red_size
+ green_size
+ blue_size
+ alpha_size
!= buffer_size
)
384 case EGL_LUMINANCE_BUFFER
:
385 if (red_size
|| green_size
|| blue_size
)
387 if (luminance_size
+ alpha_size
!= buffer_size
)
392 val
= GET_CONFIG_ATTRIB(conf
, EGL_SAMPLE_BUFFERS
);
393 if (!val
&& GET_CONFIG_ATTRIB(conf
, EGL_SAMPLES
))
396 val
= GET_CONFIG_ATTRIB(conf
, EGL_SURFACE_TYPE
);
397 if (!(val
& EGL_WINDOW_BIT
)) {
398 if (GET_CONFIG_ATTRIB(conf
, EGL_NATIVE_VISUAL_ID
) != 0 ||
399 GET_CONFIG_ATTRIB(conf
, EGL_NATIVE_VISUAL_TYPE
) != EGL_NONE
)
402 if (!(val
& EGL_PBUFFER_BIT
)) {
403 if (GET_CONFIG_ATTRIB(conf
, EGL_BIND_TO_TEXTURE_RGB
) ||
404 GET_CONFIG_ATTRIB(conf
, EGL_BIND_TO_TEXTURE_RGBA
))
413 * Return true if a config matches the criteria. This and
414 * _eglParseConfigAttribList together implement the algorithm
415 * described in "Selection of EGLConfigs".
417 * Note that attributes that are special (currently, only
418 * EGL_MATCH_NATIVE_PIXMAP) are ignored.
421 _eglMatchConfig(const _EGLConfig
*conf
, const _EGLConfig
*criteria
)
424 EGLBoolean matched
= EGL_TRUE
;
426 for (i
= 0; i
< ARRAY_SIZE(_eglValidationTable
); i
++) {
428 if (_eglValidationTable
[i
].criterion
== ATTRIB_CRITERION_IGNORE
)
431 attr
= _eglValidationTable
[i
].attr
;
432 cmp
= GET_CONFIG_ATTRIB(criteria
, attr
);
433 if (cmp
== EGL_DONT_CARE
)
436 val
= GET_CONFIG_ATTRIB(conf
, attr
);
437 switch (_eglValidationTable
[i
].criterion
) {
438 case ATTRIB_CRITERION_EXACT
:
442 case ATTRIB_CRITERION_ATLEAST
:
446 case ATTRIB_CRITERION_MASK
:
447 if ((val
& cmp
) != cmp
)
450 case ATTRIB_CRITERION_SPECIAL
:
467 * Initialize a criteria config from the given attribute list.
468 * Return EGL_FALSE if any of the attribute is invalid.
471 _eglParseConfigAttribList(_EGLConfig
*conf
, const EGLint
*attrib_list
)
474 EGLint config_id
= 0, level
= 0;
475 EGLBoolean has_native_visual_type
= EGL_FALSE
;
476 EGLBoolean has_transparent_color
= EGL_FALSE
;
478 /* reset to default values */
479 for (i
= 0; i
< ARRAY_SIZE(_eglValidationTable
); i
++) {
480 attr
= _eglValidationTable
[i
].attr
;
481 val
= _eglValidationTable
[i
].default_value
;
482 SET_CONFIG_ATTRIB(conf
, attr
, val
);
486 for (i
= 0; attrib_list
&& attrib_list
[i
] != EGL_NONE
; i
+= 2) {
489 attr
= attrib_list
[i
];
490 val
= attrib_list
[i
+ 1];
492 idx
= _eglIndexConfig(conf
, attr
);
495 conf
->Storage
[idx
] = val
;
497 /* rememeber some attributes for post-processing */
505 case EGL_NATIVE_VISUAL_TYPE
:
506 has_native_visual_type
= EGL_TRUE
;
508 case EGL_TRANSPARENT_RED_VALUE
:
509 case EGL_TRANSPARENT_GREEN_VALUE
:
510 case EGL_TRANSPARENT_BLUE_VALUE
:
511 has_transparent_color
= EGL_TRUE
;
518 if (!_eglValidateConfig(conf
, EGL_TRUE
))
521 /* the spec says that EGL_LEVEL cannot be EGL_DONT_CARE */
522 if (level
== EGL_DONT_CARE
)
525 /* ignore other attributes when EGL_CONFIG_ID is given */
527 _eglResetConfigKeys(conf
, EGL_DONT_CARE
);
528 SET_CONFIG_ATTRIB(conf
, EGL_CONFIG_ID
, config_id
);
531 if (has_native_visual_type
) {
532 val
= GET_CONFIG_ATTRIB(conf
, EGL_SURFACE_TYPE
);
533 if (!(val
& EGL_WINDOW_BIT
))
534 SET_CONFIG_ATTRIB(conf
, EGL_NATIVE_VISUAL_TYPE
, EGL_DONT_CARE
);
537 if (has_transparent_color
) {
538 val
= GET_CONFIG_ATTRIB(conf
, EGL_TRANSPARENT_TYPE
);
539 if (val
== EGL_NONE
) {
540 SET_CONFIG_ATTRIB(conf
, EGL_TRANSPARENT_RED_VALUE
,
542 SET_CONFIG_ATTRIB(conf
, EGL_TRANSPARENT_GREEN_VALUE
,
544 SET_CONFIG_ATTRIB(conf
, EGL_TRANSPARENT_BLUE_VALUE
,
555 * Decide the ordering of conf1 and conf2, under the given criteria.
556 * When compare_id is true, this implements the algorithm described
557 * in "Sorting of EGLConfigs". When compare_id is false,
558 * EGL_CONFIG_ID is not compared.
560 * It returns a negative integer if conf1 is considered to come
561 * before conf2; a positive integer if conf2 is considered to come
562 * before conf1; zero if the ordering cannot be decided.
564 * Note that EGL_NATIVE_VISUAL_TYPE is platform-dependent and is
568 _eglCompareConfigs(const _EGLConfig
*conf1
, const _EGLConfig
*conf2
,
569 const _EGLConfig
*criteria
, EGLBoolean compare_id
)
571 const EGLint compare_attribs
[] = {
580 EGLBoolean rgb_buffer
;
586 /* the enum values have the desired ordering */
587 assert(EGL_NONE
< EGL_SLOW_CONFIG
);
588 assert(EGL_SLOW_CONFIG
< EGL_NON_CONFORMANT_CONFIG
);
589 val1
= GET_CONFIG_ATTRIB(conf1
, EGL_CONFIG_CAVEAT
);
590 val2
= GET_CONFIG_ATTRIB(conf2
, EGL_CONFIG_CAVEAT
);
592 return (val1
- val2
);
594 /* the enum values have the desired ordering */
595 assert(EGL_RGB_BUFFER
< EGL_LUMINANCE_BUFFER
);
596 val1
= GET_CONFIG_ATTRIB(conf1
, EGL_COLOR_BUFFER_TYPE
);
597 val2
= GET_CONFIG_ATTRIB(conf2
, EGL_COLOR_BUFFER_TYPE
);
599 return (val1
- val2
);
600 rgb_buffer
= (val1
== EGL_RGB_BUFFER
);
605 if (GET_CONFIG_ATTRIB(criteria
, EGL_RED_SIZE
) > 0) {
606 val1
+= GET_CONFIG_ATTRIB(conf1
, EGL_RED_SIZE
);
607 val2
+= GET_CONFIG_ATTRIB(conf2
, EGL_RED_SIZE
);
609 if (GET_CONFIG_ATTRIB(criteria
, EGL_GREEN_SIZE
) > 0) {
610 val1
+= GET_CONFIG_ATTRIB(conf1
, EGL_GREEN_SIZE
);
611 val2
+= GET_CONFIG_ATTRIB(conf2
, EGL_GREEN_SIZE
);
613 if (GET_CONFIG_ATTRIB(criteria
, EGL_BLUE_SIZE
) > 0) {
614 val1
+= GET_CONFIG_ATTRIB(conf1
, EGL_BLUE_SIZE
);
615 val2
+= GET_CONFIG_ATTRIB(conf2
, EGL_BLUE_SIZE
);
619 if (GET_CONFIG_ATTRIB(criteria
, EGL_LUMINANCE_SIZE
) > 0) {
620 val1
+= GET_CONFIG_ATTRIB(conf1
, EGL_LUMINANCE_SIZE
);
621 val2
+= GET_CONFIG_ATTRIB(conf2
, EGL_LUMINANCE_SIZE
);
624 if (GET_CONFIG_ATTRIB(criteria
, EGL_ALPHA_SIZE
) > 0) {
625 val1
+= GET_CONFIG_ATTRIB(conf1
, EGL_ALPHA_SIZE
);
626 val2
+= GET_CONFIG_ATTRIB(conf2
, EGL_ALPHA_SIZE
);
630 /* assume the default criteria, which gives no specific ordering */
634 /* for color bits, larger one is preferred */
636 return (val2
- val1
);
638 for (i
= 0; i
< ARRAY_SIZE(compare_attribs
); i
++) {
639 val1
= GET_CONFIG_ATTRIB(conf1
, compare_attribs
[i
]);
640 val2
= GET_CONFIG_ATTRIB(conf2
, compare_attribs
[i
]);
642 return (val1
- val2
);
645 /* EGL_NATIVE_VISUAL_TYPE cannot be compared here */
648 val1
= GET_CONFIG_ATTRIB(conf1
, EGL_CONFIG_ID
);
649 val2
= GET_CONFIG_ATTRIB(conf2
, EGL_CONFIG_ID
);
650 assert(val1
!= val2
);
656 return (val1
- val2
);
661 void _eglSwapConfigs(const _EGLConfig
**conf1
, const _EGLConfig
**conf2
)
663 const _EGLConfig
*tmp
= *conf1
;
670 * Quick sort an array of configs. This differs from the standard
671 * qsort() in that the compare function accepts an additional
675 _eglSortConfigs(const _EGLConfig
**configs
, EGLint count
,
676 EGLint (*compare
)(const _EGLConfig
*, const _EGLConfig
*,
680 const EGLint pivot
= 0;
686 _eglSwapConfigs(&configs
[pivot
], &configs
[count
/ 2]);
690 while (i
< count
&& compare(configs
[i
], configs
[pivot
], priv_data
) < 0)
692 while (compare(configs
[j
], configs
[pivot
], priv_data
) > 0)
695 _eglSwapConfigs(&configs
[i
], &configs
[j
]);
705 _eglSwapConfigs(&configs
[pivot
], &configs
[j
]);
707 _eglSortConfigs(configs
, j
, compare
, priv_data
);
708 _eglSortConfigs(configs
+ i
, count
- i
, compare
, priv_data
);
713 _eglFallbackCompare(const _EGLConfig
*conf1
, const _EGLConfig
*conf2
,
716 const _EGLConfig
*criteria
= (const _EGLConfig
*) priv_data
;
717 return _eglCompareConfigs(conf1
, conf2
, criteria
, EGL_TRUE
);
722 * Typical fallback routine for eglChooseConfig
725 _eglChooseConfig(_EGLDriver
*drv
, _EGLDisplay
*disp
, const EGLint
*attrib_list
,
726 EGLConfig
*configs
, EGLint config_size
, EGLint
*num_configs
)
728 _EGLConfig
**configList
, criteria
;
732 return _eglError(EGL_BAD_PARAMETER
, "eglChooseConfigs");
734 _eglInitConfig(&criteria
, 0);
735 if (!_eglParseConfigAttribList(&criteria
, attrib_list
))
736 return _eglError(EGL_BAD_ATTRIBUTE
, "eglChooseConfig");
738 /* allocate array of config pointers */
739 configList
= (_EGLConfig
**)
740 malloc(disp
->NumConfigs
* sizeof(_EGLConfig
*));
742 return _eglError(EGL_BAD_ALLOC
, "eglChooseConfig(out of memory)");
744 /* perform selection of configs */
746 for (i
= 0; i
< disp
->NumConfigs
; i
++) {
747 if (_eglMatchConfig(disp
->Configs
[i
], &criteria
))
748 configList
[count
++] = disp
->Configs
[i
];
751 /* perform sorting of configs */
752 if (configs
&& count
) {
753 _eglSortConfigs((const _EGLConfig
**) configList
, count
,
754 _eglFallbackCompare
, (void *) &criteria
);
755 count
= MIN2(count
, config_size
);
756 for (i
= 0; i
< count
; i
++)
757 configs
[i
] = _eglGetConfigHandle(configList
[i
]);
762 *num_configs
= count
;
768 static INLINE EGLBoolean
769 _eglIsConfigAttribValid(_EGLConfig
*conf
, EGLint attr
)
771 if (_eglIndexConfig(conf
, attr
) < 0)
774 /* there are some holes in the range */
776 case EGL_PRESERVED_RESOURCES
:
778 #ifdef EGL_VERSION_1_4
779 case EGL_MATCH_NATIVE_PIXMAP
:
791 * Fallback for eglGetConfigAttrib.
794 _eglGetConfigAttrib(_EGLDriver
*drv
, _EGLDisplay
*dpy
, _EGLConfig
*conf
,
795 EGLint attribute
, EGLint
*value
)
797 if (!_eglIsConfigAttribValid(conf
, attribute
))
798 return _eglError(EGL_BAD_ATTRIBUTE
, "eglGetConfigAttrib");
800 return _eglError(EGL_BAD_PARAMETER
, "eglGetConfigAttrib");
802 *value
= GET_CONFIG_ATTRIB(conf
, attribute
);
808 * Fallback for eglGetConfigs.
811 _eglGetConfigs(_EGLDriver
*drv
, _EGLDisplay
*disp
, EGLConfig
*configs
,
812 EGLint config_size
, EGLint
*num_config
)
815 return _eglError(EGL_BAD_PARAMETER
, "eglGetConfigs");
819 *num_config
= MIN2(disp
->NumConfigs
, config_size
);
820 for (i
= 0; i
< *num_config
; i
++)
821 configs
[i
] = _eglGetConfigHandle(disp
->Configs
[i
]);
824 /* just return total number of supported configs */
825 *num_config
= disp
->NumConfigs
;