2 * EGL Configuration (pixel format) functions.
10 #include "egldisplay.h"
11 #include "eglcurrent.h"
15 #define MIN2(A, B) (((A) < (B)) ? (A) : (B))
19 * Init the given _EGLconfig to default values.
20 * \param id the configuration's ID.
22 * Note that id must be positive for the config to be valid.
23 * It is also recommended that when there are N configs, their
24 * IDs are from 1 to N respectively.
27 _eglInitConfig(_EGLConfig
*config
, _EGLDisplay
*dpy
, EGLint id
)
29 memset(config
, 0, sizeof(*config
));
31 config
->Display
= dpy
;
33 /* some attributes take non-zero default values */
34 SET_CONFIG_ATTRIB(config
, EGL_CONFIG_ID
, id
);
35 SET_CONFIG_ATTRIB(config
, EGL_CONFIG_CAVEAT
, EGL_NONE
);
36 SET_CONFIG_ATTRIB(config
, EGL_TRANSPARENT_TYPE
, EGL_NONE
);
37 SET_CONFIG_ATTRIB(config
, EGL_NATIVE_VISUAL_TYPE
, EGL_NONE
);
38 #ifdef EGL_VERSION_1_2
39 SET_CONFIG_ATTRIB(config
, EGL_COLOR_BUFFER_TYPE
, EGL_RGB_BUFFER
);
40 #endif /* EGL_VERSION_1_2 */
45 * Link a config to a display and return the handle of the link.
46 * The handle can be passed to client directly.
48 * Note that we just save the ptr to the config (we don't copy the config).
51 _eglAddConfig(_EGLDisplay
*dpy
, _EGLConfig
*conf
)
56 assert(GET_CONFIG_ATTRIB(conf
, EGL_CONFIG_ID
) > 0);
58 configs
= dpy
->Configs
;
59 if (dpy
->NumConfigs
>= dpy
->MaxConfigs
) {
60 EGLint new_size
= dpy
->MaxConfigs
+ 16;
61 assert(dpy
->NumConfigs
< new_size
);
63 configs
= realloc(dpy
->Configs
, new_size
* sizeof(dpy
->Configs
[0]));
65 return (EGLConfig
) NULL
;
67 dpy
->Configs
= configs
;
68 dpy
->MaxConfigs
= new_size
;
72 dpy
->Configs
[dpy
->NumConfigs
++] = conf
;
74 return (EGLConfig
) conf
;
79 _eglCheckConfigHandle(EGLConfig config
, _EGLDisplay
*dpy
)
81 EGLint num_configs
= (dpy
) ? dpy
->NumConfigs
: 0;
84 for (i
= 0; i
< num_configs
; i
++) {
85 _EGLConfig
*conf
= dpy
->Configs
[i
];
86 if (conf
== (_EGLConfig
*) config
) {
87 assert(conf
->Display
== dpy
);
91 return (i
< num_configs
);
101 ATTRIB_TYPE_PSEUDO
, /* non-queryable */
102 ATTRIB_TYPE_PLATFORM
, /* platform-dependent */
104 ATTRIB_CRITERION_EXACT
,
105 ATTRIB_CRITERION_ATLEAST
,
106 ATTRIB_CRITERION_MASK
,
107 ATTRIB_CRITERION_SPECIAL
,
108 ATTRIB_CRITERION_IGNORE
112 /* EGL spec Table 3.1 and 3.4 */
113 static const struct {
117 EGLint default_value
;
118 } _eglValidationTable
[] =
120 { EGL_BUFFER_SIZE
, ATTRIB_TYPE_INTEGER
,
121 ATTRIB_CRITERION_ATLEAST
,
123 { EGL_RED_SIZE
, ATTRIB_TYPE_INTEGER
,
124 ATTRIB_CRITERION_ATLEAST
,
126 { EGL_GREEN_SIZE
, ATTRIB_TYPE_INTEGER
,
127 ATTRIB_CRITERION_ATLEAST
,
129 { EGL_BLUE_SIZE
, ATTRIB_TYPE_INTEGER
,
130 ATTRIB_CRITERION_ATLEAST
,
132 { EGL_LUMINANCE_SIZE
, ATTRIB_TYPE_INTEGER
,
133 ATTRIB_CRITERION_ATLEAST
,
135 { EGL_ALPHA_SIZE
, ATTRIB_TYPE_INTEGER
,
136 ATTRIB_CRITERION_ATLEAST
,
138 { EGL_ALPHA_MASK_SIZE
, ATTRIB_TYPE_INTEGER
,
139 ATTRIB_CRITERION_ATLEAST
,
141 { EGL_BIND_TO_TEXTURE_RGB
, ATTRIB_TYPE_BOOLEAN
,
142 ATTRIB_CRITERION_EXACT
,
144 { EGL_BIND_TO_TEXTURE_RGBA
, ATTRIB_TYPE_BOOLEAN
,
145 ATTRIB_CRITERION_EXACT
,
147 { EGL_COLOR_BUFFER_TYPE
, ATTRIB_TYPE_ENUM
,
148 ATTRIB_CRITERION_EXACT
,
150 { EGL_CONFIG_CAVEAT
, ATTRIB_TYPE_ENUM
,
151 ATTRIB_CRITERION_EXACT
,
153 { EGL_CONFIG_ID
, ATTRIB_TYPE_INTEGER
,
154 ATTRIB_CRITERION_EXACT
,
156 { EGL_CONFORMANT
, ATTRIB_TYPE_BITMASK
,
157 ATTRIB_CRITERION_MASK
,
159 { EGL_DEPTH_SIZE
, ATTRIB_TYPE_INTEGER
,
160 ATTRIB_CRITERION_ATLEAST
,
162 { EGL_LEVEL
, ATTRIB_TYPE_PLATFORM
,
163 ATTRIB_CRITERION_EXACT
,
165 { EGL_MAX_PBUFFER_WIDTH
, ATTRIB_TYPE_INTEGER
,
166 ATTRIB_CRITERION_IGNORE
,
168 { EGL_MAX_PBUFFER_HEIGHT
, ATTRIB_TYPE_INTEGER
,
169 ATTRIB_CRITERION_IGNORE
,
171 { EGL_MAX_PBUFFER_PIXELS
, ATTRIB_TYPE_INTEGER
,
172 ATTRIB_CRITERION_IGNORE
,
174 { EGL_MAX_SWAP_INTERVAL
, ATTRIB_TYPE_INTEGER
,
175 ATTRIB_CRITERION_EXACT
,
177 { EGL_MIN_SWAP_INTERVAL
, ATTRIB_TYPE_INTEGER
,
178 ATTRIB_CRITERION_EXACT
,
180 { EGL_NATIVE_RENDERABLE
, ATTRIB_TYPE_BOOLEAN
,
181 ATTRIB_CRITERION_EXACT
,
183 { EGL_NATIVE_VISUAL_ID
, ATTRIB_TYPE_PLATFORM
,
184 ATTRIB_CRITERION_IGNORE
,
186 { EGL_NATIVE_VISUAL_TYPE
, ATTRIB_TYPE_PLATFORM
,
187 ATTRIB_CRITERION_EXACT
,
189 { EGL_RENDERABLE_TYPE
, ATTRIB_TYPE_BITMASK
,
190 ATTRIB_CRITERION_MASK
,
192 { EGL_SAMPLE_BUFFERS
, ATTRIB_TYPE_INTEGER
,
193 ATTRIB_CRITERION_ATLEAST
,
195 { EGL_SAMPLES
, ATTRIB_TYPE_INTEGER
,
196 ATTRIB_CRITERION_ATLEAST
,
198 { EGL_STENCIL_SIZE
, ATTRIB_TYPE_INTEGER
,
199 ATTRIB_CRITERION_ATLEAST
,
201 { EGL_SURFACE_TYPE
, ATTRIB_TYPE_BITMASK
,
202 ATTRIB_CRITERION_MASK
,
204 { EGL_TRANSPARENT_TYPE
, ATTRIB_TYPE_ENUM
,
205 ATTRIB_CRITERION_EXACT
,
207 { EGL_TRANSPARENT_RED_VALUE
, ATTRIB_TYPE_INTEGER
,
208 ATTRIB_CRITERION_EXACT
,
210 { EGL_TRANSPARENT_GREEN_VALUE
, ATTRIB_TYPE_INTEGER
,
211 ATTRIB_CRITERION_EXACT
,
213 { EGL_TRANSPARENT_BLUE_VALUE
, ATTRIB_TYPE_INTEGER
,
214 ATTRIB_CRITERION_EXACT
,
216 /* these are not real attributes */
217 { EGL_MATCH_NATIVE_PIXMAP
, ATTRIB_TYPE_PSEUDO
,
218 ATTRIB_CRITERION_SPECIAL
,
220 /* there is a gap before EGL_SAMPLES */
221 { 0x3030, ATTRIB_TYPE_PSEUDO
,
222 ATTRIB_CRITERION_IGNORE
,
224 { EGL_NONE
, ATTRIB_TYPE_PSEUDO
,
225 ATTRIB_CRITERION_IGNORE
,
228 { EGL_Y_INVERTED_NOK
, ATTRIB_TYPE_BOOLEAN
,
229 ATTRIB_CRITERION_EXACT
,
236 * Return true if a config is valid. When for_matching is true,
237 * EGL_DONT_CARE is accepted as a valid attribute value, and checks
238 * for conflicting attribute values are skipped.
240 * Note that some attributes are platform-dependent and are not
244 _eglValidateConfig(const _EGLConfig
*conf
, EGLBoolean for_matching
)
247 EGLBoolean valid
= EGL_TRUE
;
248 EGLint red_size
= 0, green_size
= 0, blue_size
= 0, luminance_size
= 0;
249 EGLint alpha_size
= 0, buffer_size
= 0;
251 /* all attributes should have been listed */
252 assert(ARRAY_SIZE(_eglValidationTable
) == _EGL_CONFIG_NUM_ATTRIBS
);
254 /* check attributes by their types */
255 for (i
= 0; i
< ARRAY_SIZE(_eglValidationTable
); i
++) {
258 attr
= _eglValidationTable
[i
].attr
;
259 val
= GET_CONFIG_ATTRIB(conf
, attr
);
261 switch (_eglValidationTable
[i
].type
) {
262 case ATTRIB_TYPE_INTEGER
:
265 /* config id must be positive */
269 case EGL_SAMPLE_BUFFERS
:
270 /* there can be at most 1 sample buffer */
283 case EGL_LUMINANCE_SIZE
:
284 luminance_size
= val
;
289 case EGL_BUFFER_SIZE
:
296 case ATTRIB_TYPE_BOOLEAN
:
297 if (val
!= EGL_TRUE
&& val
!= EGL_FALSE
)
300 case ATTRIB_TYPE_ENUM
:
302 case EGL_CONFIG_CAVEAT
:
303 if (val
!= EGL_NONE
&& val
!= EGL_SLOW_CONFIG
&&
304 val
!= EGL_NON_CONFORMANT_CONFIG
)
307 case EGL_TRANSPARENT_TYPE
:
308 if (val
!= EGL_NONE
&& val
!= EGL_TRANSPARENT_RGB
)
311 case EGL_COLOR_BUFFER_TYPE
:
312 if (val
!= EGL_RGB_BUFFER
&& val
!= EGL_LUMINANCE_BUFFER
)
320 case ATTRIB_TYPE_BITMASK
:
322 case EGL_SURFACE_TYPE
:
323 mask
= EGL_PBUFFER_BIT
|
326 EGL_VG_COLORSPACE_LINEAR_BIT
|
327 EGL_VG_ALPHA_FORMAT_PRE_BIT
|
328 EGL_MULTISAMPLE_RESOLVE_BOX_BIT
|
329 EGL_SWAP_BEHAVIOR_PRESERVED_BIT
;
330 if (conf
->Display
->Extensions
.MESA_screen_surface
)
331 mask
|= EGL_SCREEN_BIT_MESA
;
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
)
369 "attribute 0x%04x has an invalid value 0x%x", attr
, val
);
374 /* any invalid attribute value should have been catched */
375 if (!valid
|| for_matching
)
378 /* now check for conflicting attribute values */
380 switch (GET_CONFIG_ATTRIB(conf
, EGL_COLOR_BUFFER_TYPE
)) {
384 if (red_size
+ green_size
+ blue_size
+ alpha_size
!= buffer_size
)
387 case EGL_LUMINANCE_BUFFER
:
388 if (red_size
|| green_size
|| blue_size
)
390 if (luminance_size
+ alpha_size
!= buffer_size
)
395 _eglLog(_EGL_DEBUG
, "conflicting color buffer type and channel sizes");
399 val
= GET_CONFIG_ATTRIB(conf
, EGL_SAMPLE_BUFFERS
);
400 if (!val
&& GET_CONFIG_ATTRIB(conf
, EGL_SAMPLES
))
403 _eglLog(_EGL_DEBUG
, "conflicting samples and sample buffers");
407 val
= GET_CONFIG_ATTRIB(conf
, EGL_SURFACE_TYPE
);
408 if (!(val
& EGL_WINDOW_BIT
)) {
409 if (GET_CONFIG_ATTRIB(conf
, EGL_NATIVE_VISUAL_ID
) != 0 ||
410 GET_CONFIG_ATTRIB(conf
, EGL_NATIVE_VISUAL_TYPE
) != EGL_NONE
)
413 if (!(val
& EGL_PBUFFER_BIT
)) {
414 if (GET_CONFIG_ATTRIB(conf
, EGL_BIND_TO_TEXTURE_RGB
) ||
415 GET_CONFIG_ATTRIB(conf
, EGL_BIND_TO_TEXTURE_RGBA
))
419 _eglLog(_EGL_DEBUG
, "conflicting surface type and native visual/texture binding");
428 * Return true if a config matches the criteria. This and
429 * _eglParseConfigAttribList together implement the algorithm
430 * described in "Selection of EGLConfigs".
432 * Note that attributes that are special (currently, only
433 * EGL_MATCH_NATIVE_PIXMAP) are ignored.
436 _eglMatchConfig(const _EGLConfig
*conf
, const _EGLConfig
*criteria
)
439 EGLBoolean matched
= EGL_TRUE
;
441 for (i
= 0; i
< ARRAY_SIZE(_eglValidationTable
); i
++) {
443 if (_eglValidationTable
[i
].criterion
== ATTRIB_CRITERION_IGNORE
)
446 attr
= _eglValidationTable
[i
].attr
;
447 cmp
= GET_CONFIG_ATTRIB(criteria
, attr
);
448 if (cmp
== EGL_DONT_CARE
)
451 val
= GET_CONFIG_ATTRIB(conf
, attr
);
452 switch (_eglValidationTable
[i
].criterion
) {
453 case ATTRIB_CRITERION_EXACT
:
457 case ATTRIB_CRITERION_ATLEAST
:
461 case ATTRIB_CRITERION_MASK
:
462 if ((val
& cmp
) != cmp
)
465 case ATTRIB_CRITERION_SPECIAL
:
476 "the value (0x%x) of attribute 0x%04x did not meet the criteria (0x%x)",
486 static INLINE EGLBoolean
487 _eglIsConfigAttribValid(_EGLConfig
*conf
, EGLint attr
)
489 if (_eglIndexConfig(conf
, attr
) < 0)
492 /* there are some holes in the range */
494 case 0x3030 /* a gap before EGL_SAMPLES */:
496 #ifdef EGL_VERSION_1_4
497 case EGL_MATCH_NATIVE_PIXMAP
:
500 case EGL_Y_INVERTED_NOK
:
501 return conf
->Display
->Extensions
.NOK_texture_from_pixmap
;
510 * Initialize a criteria config from the given attribute list.
511 * Return EGL_FALSE if any of the attribute is invalid.
514 _eglParseConfigAttribList(_EGLConfig
*conf
, const EGLint
*attrib_list
)
517 EGLint config_id
= 0, level
= 0;
518 EGLBoolean has_native_visual_type
= EGL_FALSE
;
519 EGLBoolean has_transparent_color
= EGL_FALSE
;
521 /* reset to default values */
522 for (i
= 0; i
< ARRAY_SIZE(_eglValidationTable
); i
++) {
523 attr
= _eglValidationTable
[i
].attr
;
524 val
= _eglValidationTable
[i
].default_value
;
525 SET_CONFIG_ATTRIB(conf
, attr
, val
);
529 for (i
= 0; attrib_list
&& attrib_list
[i
] != EGL_NONE
; i
+= 2) {
530 attr
= attrib_list
[i
];
531 val
= attrib_list
[i
+ 1];
533 if (!_eglIsConfigAttribValid(conf
, attr
))
536 SET_CONFIG_ATTRIB(conf
, attr
, val
);
538 /* rememeber some attributes for post-processing */
546 case EGL_NATIVE_VISUAL_TYPE
:
547 has_native_visual_type
= EGL_TRUE
;
549 case EGL_TRANSPARENT_RED_VALUE
:
550 case EGL_TRANSPARENT_GREEN_VALUE
:
551 case EGL_TRANSPARENT_BLUE_VALUE
:
552 has_transparent_color
= EGL_TRUE
;
559 if (!_eglValidateConfig(conf
, EGL_TRUE
))
562 /* the spec says that EGL_LEVEL cannot be EGL_DONT_CARE */
563 if (level
== EGL_DONT_CARE
)
566 /* ignore other attributes when EGL_CONFIG_ID is given */
568 _eglResetConfigKeys(conf
, EGL_DONT_CARE
);
569 SET_CONFIG_ATTRIB(conf
, EGL_CONFIG_ID
, config_id
);
572 if (has_native_visual_type
) {
573 val
= GET_CONFIG_ATTRIB(conf
, EGL_SURFACE_TYPE
);
574 if (!(val
& EGL_WINDOW_BIT
))
575 SET_CONFIG_ATTRIB(conf
, EGL_NATIVE_VISUAL_TYPE
, EGL_DONT_CARE
);
578 if (has_transparent_color
) {
579 val
= GET_CONFIG_ATTRIB(conf
, EGL_TRANSPARENT_TYPE
);
580 if (val
== EGL_NONE
) {
581 SET_CONFIG_ATTRIB(conf
, EGL_TRANSPARENT_RED_VALUE
,
583 SET_CONFIG_ATTRIB(conf
, EGL_TRANSPARENT_GREEN_VALUE
,
585 SET_CONFIG_ATTRIB(conf
, EGL_TRANSPARENT_BLUE_VALUE
,
596 * Decide the ordering of conf1 and conf2, under the given criteria.
597 * When compare_id is true, this implements the algorithm described
598 * in "Sorting of EGLConfigs". When compare_id is false,
599 * EGL_CONFIG_ID is not compared.
601 * It returns a negative integer if conf1 is considered to come
602 * before conf2; a positive integer if conf2 is considered to come
603 * before conf1; zero if the ordering cannot be decided.
605 * Note that EGL_NATIVE_VISUAL_TYPE is platform-dependent and is
609 _eglCompareConfigs(const _EGLConfig
*conf1
, const _EGLConfig
*conf2
,
610 const _EGLConfig
*criteria
, EGLBoolean compare_id
)
612 const EGLint compare_attribs
[] = {
621 EGLBoolean rgb_buffer
;
627 /* the enum values have the desired ordering */
628 assert(EGL_NONE
< EGL_SLOW_CONFIG
);
629 assert(EGL_SLOW_CONFIG
< EGL_NON_CONFORMANT_CONFIG
);
630 val1
= GET_CONFIG_ATTRIB(conf1
, EGL_CONFIG_CAVEAT
);
631 val2
= GET_CONFIG_ATTRIB(conf2
, EGL_CONFIG_CAVEAT
);
633 return (val1
- val2
);
635 /* the enum values have the desired ordering */
636 assert(EGL_RGB_BUFFER
< EGL_LUMINANCE_BUFFER
);
637 val1
= GET_CONFIG_ATTRIB(conf1
, EGL_COLOR_BUFFER_TYPE
);
638 val2
= GET_CONFIG_ATTRIB(conf2
, EGL_COLOR_BUFFER_TYPE
);
640 return (val1
- val2
);
641 rgb_buffer
= (val1
== EGL_RGB_BUFFER
);
646 if (GET_CONFIG_ATTRIB(criteria
, EGL_RED_SIZE
) > 0) {
647 val1
+= GET_CONFIG_ATTRIB(conf1
, EGL_RED_SIZE
);
648 val2
+= GET_CONFIG_ATTRIB(conf2
, EGL_RED_SIZE
);
650 if (GET_CONFIG_ATTRIB(criteria
, EGL_GREEN_SIZE
) > 0) {
651 val1
+= GET_CONFIG_ATTRIB(conf1
, EGL_GREEN_SIZE
);
652 val2
+= GET_CONFIG_ATTRIB(conf2
, EGL_GREEN_SIZE
);
654 if (GET_CONFIG_ATTRIB(criteria
, EGL_BLUE_SIZE
) > 0) {
655 val1
+= GET_CONFIG_ATTRIB(conf1
, EGL_BLUE_SIZE
);
656 val2
+= GET_CONFIG_ATTRIB(conf2
, EGL_BLUE_SIZE
);
660 if (GET_CONFIG_ATTRIB(criteria
, EGL_LUMINANCE_SIZE
) > 0) {
661 val1
+= GET_CONFIG_ATTRIB(conf1
, EGL_LUMINANCE_SIZE
);
662 val2
+= GET_CONFIG_ATTRIB(conf2
, EGL_LUMINANCE_SIZE
);
665 if (GET_CONFIG_ATTRIB(criteria
, EGL_ALPHA_SIZE
) > 0) {
666 val1
+= GET_CONFIG_ATTRIB(conf1
, EGL_ALPHA_SIZE
);
667 val2
+= GET_CONFIG_ATTRIB(conf2
, EGL_ALPHA_SIZE
);
671 /* assume the default criteria, which gives no specific ordering */
675 /* for color bits, larger one is preferred */
677 return (val2
- val1
);
679 for (i
= 0; i
< ARRAY_SIZE(compare_attribs
); i
++) {
680 val1
= GET_CONFIG_ATTRIB(conf1
, compare_attribs
[i
]);
681 val2
= GET_CONFIG_ATTRIB(conf2
, compare_attribs
[i
]);
683 return (val1
- val2
);
686 /* EGL_NATIVE_VISUAL_TYPE cannot be compared here */
689 val1
= GET_CONFIG_ATTRIB(conf1
, EGL_CONFIG_ID
);
690 val2
= GET_CONFIG_ATTRIB(conf2
, EGL_CONFIG_ID
);
691 assert(val1
!= val2
);
697 return (val1
- val2
);
702 void _eglSwapConfigs(const _EGLConfig
**conf1
, const _EGLConfig
**conf2
)
704 const _EGLConfig
*tmp
= *conf1
;
711 * Quick sort an array of configs. This differs from the standard
712 * qsort() in that the compare function accepts an additional
716 _eglSortConfigs(const _EGLConfig
**configs
, EGLint count
,
717 EGLint (*compare
)(const _EGLConfig
*, const _EGLConfig
*,
721 const EGLint pivot
= 0;
727 _eglSwapConfigs(&configs
[pivot
], &configs
[count
/ 2]);
731 while (i
< count
&& compare(configs
[i
], configs
[pivot
], priv_data
) < 0)
733 while (compare(configs
[j
], configs
[pivot
], priv_data
) > 0)
736 _eglSwapConfigs(&configs
[i
], &configs
[j
]);
746 _eglSwapConfigs(&configs
[pivot
], &configs
[j
]);
748 _eglSortConfigs(configs
, j
, compare
, priv_data
);
749 _eglSortConfigs(configs
+ i
, count
- i
, compare
, priv_data
);
754 _eglFallbackCompare(const _EGLConfig
*conf1
, const _EGLConfig
*conf2
,
757 const _EGLConfig
*criteria
= (const _EGLConfig
*) priv_data
;
758 return _eglCompareConfigs(conf1
, conf2
, criteria
, EGL_TRUE
);
763 * Typical fallback routine for eglChooseConfig
766 _eglChooseConfig(_EGLDriver
*drv
, _EGLDisplay
*disp
, const EGLint
*attrib_list
,
767 EGLConfig
*configs
, EGLint config_size
, EGLint
*num_configs
)
769 _EGLConfig
**configList
, criteria
;
773 return _eglError(EGL_BAD_PARAMETER
, "eglChooseConfigs");
775 _eglInitConfig(&criteria
, disp
, 0);
776 if (!_eglParseConfigAttribList(&criteria
, attrib_list
))
777 return _eglError(EGL_BAD_ATTRIBUTE
, "eglChooseConfig");
779 /* allocate array of config pointers */
780 configList
= (_EGLConfig
**)
781 malloc(disp
->NumConfigs
* sizeof(_EGLConfig
*));
783 return _eglError(EGL_BAD_ALLOC
, "eglChooseConfig(out of memory)");
785 /* perform selection of configs */
787 for (i
= 0; i
< disp
->NumConfigs
; i
++) {
788 if (_eglMatchConfig(disp
->Configs
[i
], &criteria
))
789 configList
[count
++] = disp
->Configs
[i
];
792 /* perform sorting of configs */
793 if (configs
&& count
) {
794 _eglSortConfigs((const _EGLConfig
**) configList
, count
,
795 _eglFallbackCompare
, (void *) &criteria
);
796 count
= MIN2(count
, config_size
);
797 for (i
= 0; i
< count
; i
++)
798 configs
[i
] = _eglGetConfigHandle(configList
[i
]);
803 *num_configs
= count
;
810 * Fallback for eglGetConfigAttrib.
813 _eglGetConfigAttrib(_EGLDriver
*drv
, _EGLDisplay
*dpy
, _EGLConfig
*conf
,
814 EGLint attribute
, EGLint
*value
)
816 if (!_eglIsConfigAttribValid(conf
, attribute
))
817 return _eglError(EGL_BAD_ATTRIBUTE
, "eglGetConfigAttrib");
819 return _eglError(EGL_BAD_PARAMETER
, "eglGetConfigAttrib");
821 *value
= GET_CONFIG_ATTRIB(conf
, attribute
);
827 * Fallback for eglGetConfigs.
830 _eglGetConfigs(_EGLDriver
*drv
, _EGLDisplay
*disp
, EGLConfig
*configs
,
831 EGLint config_size
, EGLint
*num_config
)
834 return _eglError(EGL_BAD_PARAMETER
, "eglGetConfigs");
838 *num_config
= MIN2(disp
->NumConfigs
, config_size
);
839 for (i
= 0; i
< *num_config
; i
++)
840 configs
[i
] = _eglGetConfigHandle(disp
->Configs
[i
]);
843 /* just return total number of supported configs */
844 *num_config
= disp
->NumConfigs
;