The-Homebrew-Cloud/Ryujinx-SDL
2
0
Fork 0
mirror of https://github.com/Ryujinx/SDL.git synced 2024-09-23 23:48:37 +02:00
Code Issues Packages Projects Releases Wiki Activity
6,260 Commits 1 Branch 28 Tags 96 MiB
6cb7f9e39a
Commit Graph

42 Commits

Author SHA1 Message Date
James Legg
e2dbed9cfe SDL_blit: Fix undefined bitshift operations 
Arithmatic operations promote Uint8 to signed int. If the top bit of a
Uint8 is set, and it is left shifted 24 places, then the result is not
representable in a signed 32 bit int. This would be undefined behaviour
on systems where int is 32 bits.
 2020-05-29 13:05:37 +01:00
Sam Lantinga
b5e3d264f2 Added a single SDL_LEAN_AND_MEAN define to turn on minimal SDL builds 
Protected more code with #ifdefs to reduce the size of minimal shared library builds
 2020-01-23 01:00:52 -08:00
Sylvain Becker
55afc281fa Add #define SDL_HAVE_BLIT_N_RGB565 to compile out RGB565 LUT 2020-01-21 22:06:09 +01:00
Sam Lantinga
a8780c6a28 Updated copyright date for 2020 2020-01-16 20:49:25 -08:00
Sylvain Becker
60d3965ece Readability: remove redundant return, continue, enum declaration 2019-10-30 15:36:17 +01:00
Sylvain Becker
b458d7a28f Readability: remove redundant cast to the same type 2019-10-30 15:13:55 +01:00
Sylvain Becker
7289e5e215 Android: remove warning in blit_features 
"integer constant not in range of enumerated type 'enum blit_features'"
 2019-10-27 15:22:28 +01:00
Ben Avison
74846657ec ARM: SIMD optimization for 4:4:4:4 to 8:8:8:8 normal blits 2019-10-24 21:15:50 -04:00
Ben Avison
7ac733f025 ARM: SIMD assembly optimization for BGR-to-RGB 32bpp normal blits 2019-10-24 21:15:21 -04:00
Ben Avison
8425d9d5d0 SDL_blit: use a named enum for required hardware bits in dispatch tables 2019-10-24 21:15:09 -04:00
Sam Lantinga
715e070d29 SDL_blit_N.c: Correct vec_perm() application on little-endian 64-bit PowerPC 
The LE transformation for vec_perm has an implicit assumption that the
permutation is being used to reorder vector elements (in this case 4-byte
integer word elements), not to reorder bytes within those elements.  Although
this is legal behavior, it is not anticipated by the transformation performed
by the compilers.

This causes pygame-1.9.1 test failure on PPC64LE because blitted pixmaps are
corrupted there due to how SDL uses vec_perm().

From RedHat / Fedora: https://bugzilla.redhat.com/show_bug.cgi?id=1392465
Original patch was provided by: Menanteau Guy <menantea@linux.vnet.ibm.com>
 2019-09-06 08:50:19 -07:00
Sylvain Becker
2fd4aee149 Un-activate some routine on mips because they are slowers (Bug 4503) 2019-02-23 09:36:56 +01:00
Sylvain Becker
47fb781b94 BlitNtoN BlitNtoNKey: remove non-aligned word read/store (bpp 3<->4) (Bug 4503) 
Mips and (old) ARM doesn't allow word read/write when adress isn't 4bytes
aligned. So just remove that.
 2019-02-22 09:30:45 +01:00
Sylvain Becker
90a075d75f Fix windows build 2019-02-18 22:48:14 +01:00
Sylvain Becker
e9a7b6973a Fix bug 4053: Blit issues on Big Endian CPU 2019-02-18 22:06:53 +01:00
Sylvain Becker
afd1b3dae4 Fix invalid memory access and optimise Blit_3or4_to_3or4__* 
Fix invalid write at last pixel of the surface:
  when surface has no padding (pitch == w * bpp) and bpp is 3
  with Blit, no colorkey, and NO_ALPHA same or inverse rgb triplet

Optimise by using int32 access:

BGR24 -> ARGB8888 :  faster x1.897875   (362405 -> 190953)
RGB24 -> ABGR8888 :  faster x1.660416   (363304 -> 218803)

ABGR8888 -> RGB24 :  faster x1.686319   (334962 -> 198635)
ARGB8888 -> BGR24 :  faster x1.691868   (324524 -> 191814)
BGR24 -> RGB888 :  faster x1.678459   (326811 -> 194709)
BGR888 -> RGB24 :  faster x1.731772   (327724 -> 189242)
RGB24 -> BGR888 :  faster x1.690989   (328916 -> 194511)
RGB888 -> BGR24 :  faster x1.698333   (326175 -> 192056)
 2019-02-17 16:20:23 +01:00
Sylvain Becker
1aa2ad2fe8 Better naming for the blit permutation variables 2019-02-09 17:40:32 +01:00
Sylvain Becker
f6a2ae6007 Faster blit colorkey or not, applied to bpp: 3->4 and 4->3 
===== BlitNtoNKey ========
ABGR8888 -> BGR24 :  faster x3   (2168709 -> 562738)
ABGR8888 -> RGB24 :  faster x3   (2165055 -> 567458)

ARGB8888 -> BGR24 :  faster x3   (2169109 -> 564338)
ARGB8888 -> RGB24 :  faster x3   (2165266 -> 567081)

BGR24 -> ABGR8888 :  faster x3   (2997675 -> 891636)
BGR24 -> ARGB8888 :  faster x3   (2985449 -> 892028)
BGR24 -> BGR888 :  faster x3   (2961611 -> 891913)
BGR24 -> BGRA8888 :  faster x3   (3116305 -> 891534)
BGR24 -> BGRX8888 :  faster x3   (3179654 -> 896978)
BGR24 -> RGB888 :  faster x3   (2968191 -> 895112)
BGR24 -> RGBA8888 :  faster x3   (2998428 -> 893147)
BGR24 -> RGBX8888 :  faster x3   (2976529 -> 914853)

BGR888 -> BGR24 :  faster x3   (2161906 -> 563921)
BGR888 -> RGB24 :  faster x3   (2168228 -> 566634)

BGRA8888 -> BGR24 :  faster x4   (2270501 -> 561873)
BGRA8888 -> RGB24 :  faster x3   (2163179 -> 567330)

BGRX8888 -> BGR24 :  faster x3   (2162911 -> 562322)
BGRX8888 -> RGB24 :  faster x3   (2169617 -> 570927)

RGB24 -> ABGR8888 :  faster x3   (2977061 -> 925975)
RGB24 -> ARGB8888 :  faster x3   (2978148 -> 923680)
RGB24 -> BGR888 :  faster x3   (3001413 -> 935074)
RGB24 -> BGRA8888 :  faster x3   (2959003 -> 924096)
RGB24 -> BGRX8888 :  faster x3   (2965240 -> 927100)
RGB24 -> RGB888 :  faster x3   (2983921 -> 926063)
RGB24 -> RGBA8888 :  faster x3   (2963908 -> 925457)
RGB24 -> RGBX8888 :  faster x3   (2967957 -> 931700)

RGB888 -> BGR24 :  faster x3   (2173299 -> 563226)
RGB888 -> RGB24 :  faster x3   (2218374 -> 566164)

RGBA8888 -> BGR24 :  faster x3   (2166355 -> 561381)
RGBA8888 -> RGB24 :  faster x3   (2170322 -> 566729)

RGBX8888 -> BGR24 :  faster x3   (2168524 -> 564072)
RGBX8888 -> RGB24 :  faster x3   (2163680 -> 566956)

===== BlitNtoN ========

BGR24 -> BGRA8888 :  faster x3   (2458958 -> 797557)
BGR24 -> BGRX8888 :  faster x3   (2486085 -> 797745)
BGR24 -> RGBA8888 :  faster x3   (2422116 -> 797637)
BGR24 -> RGBX8888 :  faster x3   (2454426 -> 799085)

BGRA8888 -> BGR24 :  faster x4   (2468206 -> 524486)
BGRA8888 -> RGB24 :  faster x4   (2463581 -> 525561)

BGRX8888 -> BGR24 :  faster x4   (2583355 -> 524468)
BGRX8888 -> RGB24 :  faster x4   (2477242 -> 524284)

RGB24 -> BGRA8888 :  faster x2   (2453414 -> 818415)
RGB24 -> BGRX8888 :  faster x3   (2414915 -> 800863)
RGB24 -> RGBA8888 :  faster x3   (2461114 -> 798148)
RGB24 -> RGBX8888 :  faster x3   (2400922 -> 799203)

RGBA8888 -> BGR24 :  faster x4   (2494472 -> 526428)
RGBA8888 -> RGB24 :  faster x4   (2462260 -> 526791)

RGBX8888 -> BGR24 :  faster x4   (2541115 -> 524390)
RGBX8888 -> RGB24 :  faster x4   (2469059 -> 525416)
 2019-02-09 17:20:53 +01:00
Sylvain Becker
604b44f20f Fix wrong access and simplify 2019-02-08 17:15:30 +01:00
Sylvain Becker
5ed30f844d Some simplification of previous commit 2019-02-07 22:45:50 +01:00
Sylvain Becker
5fd228921c Faster blit with CopyAlpha, no ColorKey 
Applied to following formats:

ABGR8888 -> BGRA8888 :  faster x3   (2727179 -> 704761)
ABGR8888 -> RGBA8888 :  faster x3   (2707808 -> 705309)

ARGB8888 -> BGRA8888 :  faster x3   (2745371 -> 712437)
ARGB8888 -> RGBA8888 :  faster x3   (2746230 -> 705236)

BGRA8888 -> ABGR8888 :  faster x3   (2745026 -> 707045)
BGRA8888 -> ARGB8888 :  faster x3   (2752760 -> 727373)
BGRA8888 -> RGBA8888 :  faster x3   (2769544 -> 704607)

RGBA8888 -> ABGR8888 :  faster x3   (2725058 -> 706669)
RGBA8888 -> ARGB8888 :  faster x3   (2704866 -> 707132)
RGBA8888 -> BGRA8888 :  faster x3   (2710351 -> 704615)
 2019-02-07 22:03:30 +01:00
Sylvain Becker
704e62bbf4 Code factorization of the pixel format permutation 2019-02-07 21:49:24 +01:00
Sylvain Becker
0a007a9bea Fix wrong comment 2019-02-07 18:52:49 +01:00
Sylvain Becker
e5192384d0 Faster blit with no ColorKey 
Applied to following formats:

ABGR8888 -> BGRX8888 :  faster x5   (3177493 -> 630439)
ABGR8888 -> RGBX8888 :  faster x5   (3178104 -> 628925)

ARGB8888 -> BGRX8888 :  faster x4   (3141089 -> 629448)
ARGB8888 -> RGBX8888 :  faster x5   (3216413 -> 630465)

BGR888 -> BGRA8888 :  faster x4   (3145403 -> 637701)
BGR888 -> BGRX8888 :  faster x4   (3142106 -> 630144)
BGR888 -> RGBA8888 :  faster x4   (3202685 -> 649384)
BGR888 -> RGBX8888 :  faster x4   (3170617 -> 658670)

BGRA8888 -> BGR888 :  faster x4   (3203308 -> 657697)
BGRA8888 -> RGB888 :  faster x5   (3201475 -> 631747)
BGRA8888 -> RGBX8888 :  faster x5   (3274544 -> 630409)

BGRX8888 -> ABGR8888 :  faster x4   (3149753 -> 638682)
BGRX8888 -> ARGB8888 :  faster x5   (3164101 -> 631273)
BGRX8888 -> BGR888 :  faster x4   (3144454 -> 630712)
BGRX8888 -> RGB888 :  faster x4   (3160490 -> 638047)
BGRX8888 -> RGBA8888 :  faster x5   (3308988 -> 631232)
BGRX8888 -> RGBX8888 :  faster x5   (3216775 -> 638065)

RGB888 -> BGRA8888 :  faster x4   (3143135 -> 655146)
RGB888 -> BGRX8888 :  faster x4   (3141790 -> 653771)
RGB888 -> RGBA8888 :  faster x5   (3214402 -> 637001)
RGB888 -> RGBX8888 :  faster x4   (3143082 -> 630009)

RGBA8888 -> BGR888 :  faster x3   (3157048 -> 920375)
RGBA8888 -> BGRX8888 :  faster x5   (3196692 -> 632996)
RGBA8888 -> RGB888 :  faster x4   (3141570 -> 652151)

RGBX8888 -> ABGR8888 :  faster x5   (3175401 -> 631218)
RGBX8888 -> ARGB8888 :  faster x4   (3144690 -> 639440)
RGBX8888 -> BGR888 :  faster x4   (3144250 -> 630171)
RGBX8888 -> BGRA8888 :  faster x5   (3220321 -> 630731)
RGBX8888 -> BGRX8888 :  faster x4   (3178453 -> 637445)
RGBX8888 -> RGB888 :  faster x5   (3203623 -> 632596)
 2019-02-07 18:51:14 +01:00
Sylvain Becker
7372295ec9 Faster blit when using No Alpha or Set Alpha, + ColorKey 
Applied to following formats:

ABGR8888 -> BGRX8888 :  faster x4   (2794295 -> 610587)
ABGR8888 -> RGB888 :  faster x4   (2835693 -> 615561)
ABGR8888 -> RGBX8888 :  faster x4   (2880475 -> 610479)

ARGB8888 -> BGR888 :  faster x4   (2802718 -> 610702)
ARGB8888 -> BGRX8888 :  faster x4   (2792481 -> 606311)
ARGB8888 -> RGBX8888 :  faster x4   (2821621 -> 624745)

BGR888 -> ARGB8888 :  faster x4   (2791705 -> 637889)
BGR888 -> BGRA8888 :  faster x4   (2793195 -> 652299)
BGR888 -> BGRX8888 :  faster x4   (2800713 -> 609326)
BGR888 -> RGB888 :  faster x4   (2812260 -> 610471)
BGR888 -> RGBA8888 :  faster x4   (2792327 -> 629288)
BGR888 -> RGBX8888 :  faster x4   (2799224 -> 607073)

BGRA8888 -> BGR888 :  faster x4   (2800520 -> 606897)
BGRA8888 -> RGB888 :  faster x4   (2825274 -> 616156)
BGRA8888 -> RGBX8888 :  faster x4   (2812530 -> 610340)

BGRX8888 -> ABGR8888 :  faster x4   (2793940 -> 628596)
BGRX8888 -> ARGB8888 :  faster x4   (2822686 -> 638899)
BGRX8888 -> BGR888 :  faster x4   (2818141 -> 613659)
BGRX8888 -> RGB888 :  faster x4   (2929017 -> 611794)
BGRX8888 -> RGBA8888 :  faster x4   (2799709 -> 629750)
BGRX8888 -> RGBX8888 :  faster x4   (2911010 -> 605640)

RGB888 -> ABGR8888 :  faster x4   (2800671 -> 631542)
RGB888 -> BGR888 :  faster x4   (2802644 -> 604461)
RGB888 -> BGRA8888 :  faster x4   (2801919 -> 628729)
RGB888 -> BGRX8888 :  faster x4   (2938244 -> 604135)
RGB888 -> RGBA8888 :  faster x4   (2912447 -> 642185)
RGB888 -> RGBX8888 :  faster x4   (2831676 -> 634293)

RGBA8888 -> BGR888 :  faster x4   (2928896 -> 614960)
RGBA8888 -> BGRX8888 :  faster x4   (2821422 -> 608146)
RGBA8888 -> RGB888 :  faster x4   (2825927 -> 617184)

RGBX8888 -> ABGR8888 :  faster x4   (2803852 -> 654129)
RGBX8888 -> ARGB8888 :  faster x4   (2923615 -> 642644)
RGBX8888 -> BGR888 :  faster x4   (2806523 -> 610447)
RGBX8888 -> BGRA8888 :  faster x4   (2813388 -> 630305)
RGBX8888 -> BGRX8888 :  faster x4   (2800052 -> 607881)
RGBX8888 -> RGB888 :  faster x4   (2807722 -> 610263)
 2019-02-07 17:52:28 +01:00
Sylvain Becker
bb9a9080dc Fix pointer warnings 2019-02-07 16:13:25 +01:00
Sylvain Becker
3543a44ae4 Faster blit when using CopyAlpha + ColorKey 
Applied to following formats:

ABGR8888 -> ARGB8888 :  faster x7   (3959672 -> 537227)
ABGR8888 -> BGRA8888 :  faster x7   (4008716 -> 532064)
ABGR8888 -> RGBA8888 :  faster x7   (3998576 -> 530964)

ARGB8888 -> ABGR8888 :  faster x7   (3942420 -> 532503)
ARGB8888 -> BGRA8888 :  faster x7   (3995382 -> 527722)
ARGB8888 -> RGBA8888 :  faster x7   (4259330 -> 543033)

BGRA8888 -> ABGR8888 :  faster x7   (4110411 -> 529402)
BGRA8888 -> ARGB8888 :  faster x7   (4071906 -> 538393)
BGRA8888 -> RGBA8888 :  faster x6   (4038320 -> 585141)

RGBA8888 -> ABGR8888 :  faster x7   (3937018 -> 534127)
RGBA8888 -> ARGB8888 :  faster x7   (3979577 -> 537810)
RGBA8888 -> BGRA8888 :  faster x7   (3975656 -> 528355)
 2019-02-07 15:12:17 +01:00
Sylvain Becker
7b8bac5958 Add fast paths in BlitNtoNKey 
All following conversions are faster (with colorkey, but no blending).
(ratio isn't very accurate)

ABGR8888 -> BGR888 :  faster x9   (2699035 -> 297425)

ARGB8888 -> RGB888 :  faster x8   (2659266 -> 296137)

BGR24 -> BGR24 :  faster x5   (2232482 -> 445897)
BGR24 -> RGB24 :  faster x4   (2150023 -> 448576)

BGR888 -> ABGR8888 :  faster x8   (2649957 -> 307595)

BGRA8888 -> BGRX8888 :  faster x9   (2696041 -> 297596)

BGRX8888 -> BGRA8888 :  faster x8   (2662011 -> 299463)
BGRX8888 -> BGRX8888 :  faster x9   (2733346 -> 295045)

RGB24 -> BGR24 :  faster x4   (2154551 -> 485262)
RGB24 -> RGB24 :  faster x4   (2149878 -> 484870)

RGB888 -> ARGB8888 :  faster x8   (2762877 -> 324946)

RGBA8888 -> RGBX8888 :  faster x8   (2657855 -> 297753)

RGBX8888 -> RGBA8888 :  faster x8   (2661360 -> 296655)
RGBX8888 -> RGBX8888 :  faster x8   (2649287 -> 308268)
 2019-01-30 22:50:20 +01:00
Sylvain Becker
a052d81bdf Add explicit unsigned int and char types in (for bug 4290) 2019-01-30 15:31:07 +01:00
Sylvain Becker
1128d57316 Fixed bug 4290 - add fastpaths for format conversion in BlitNtoN 
All following conversion are faster (no colorkey, no blending).
(ratio isn't very accurate)

ABGR8888 -> ARGB8888 :  faster x6   (2655837 -> 416607)
ABGR8888 -> BGR24 :  faster x7   (2470117 -> 325693)
ABGR8888 -> RGB24 :  faster x7   (2478107 -> 335445)
ABGR8888 -> RGB888 :  faster x9   (3178524 -> 333859)

ARGB8888 -> ABGR8888 :  faster x6   (2648366 -> 406977)
ARGB8888 -> BGR24 :  faster x7   (2474978 -> 327819)
ARGB8888 -> BGR888 :  faster x9   (3189072 -> 326710)
ARGB8888 -> RGB24 :  faster x7   (2473689 -> 324729)

BGR24 -> ABGR8888 :  faster x6   (2268763 -> 359946)
BGR24 -> ARGB8888 :  faster x6   (2306393 -> 359213)
BGR24 -> BGR888 :  faster x6   (2231141 -> 324195)
BGR24 -> RGB24 :  faster x4   (1557835 -> 322033)
BGR24 -> RGB888 :  faster x6   (2229854 -> 323849)

BGR888 -> ARGB8888 :  faster x8   (3215202 -> 363137)
BGR888 -> BGR24 :  faster x7   (2474775 -> 347916)
BGR888 -> RGB24 :  faster x7   (2532783 -> 327354)
BGR888 -> RGB888 :  faster x9   (3134634 -> 344987)

RGB24 -> ABGR8888 :  faster x6   (2229486 -> 358919)
RGB24 -> ARGB8888 :  faster x6   (2271587 -> 358521)
RGB24 -> BGR24 :  faster x4   (1530913 -> 321149)
RGB24 -> BGR888 :  faster x6   (2227284 -> 327453)
RGB24 -> RGB888 :  faster x6   (2227125 -> 329061)

RGB888 -> ABGR8888 :  faster x8   (3163292 -> 362445)
RGB888 -> BGR24 :  faster x7   (2469489 -> 327127)
RGB888 -> BGR888 :  faster x9   (3190526 -> 326022)
RGB888 -> RGB24 :  faster x7   (2479084 -> 324982)
 2019-01-30 15:23:33 +01:00
Sam Lantinga
5e13087b0f Updated copyright for 2019 2019-01-04 22:01:14 -08:00
Sam Lantinga
6e35e42145 Working on bug 3921 - Add some Fastpath to BlitNtoNKey and BlitNtoNKeyCopyAlpha 
Sylvain

I did various benches. with clang 6.0.0 on linux, and ndk-r16b on android (NDK_TOOLCHAIN_VERSION=clang).

- still see a x10 speed factor.
- with duff_loops, it does not use vectorisation (but doesn't seem to be a problem).

on linux my patch is already at full speed on -O2, whereas the duff_loops need -O3 (200 ms at -03, and 300ms at -02).

I realized that on Android, I had a slight variation which fits best.
both on linux with -O2 and -O3, and on android with 02/03 and armeabi-v7a/arm64.

Here's the patch.
 2018-10-01 14:43:03 -07:00
Ozkan Sezer
922623e1b6 SDL_blit_N.c (BlitNtoNKeyCopyAlpha): fix -Wshadow warnings by adding _ 
suffix to the temp Pixel local in the DUFFS_LOOP.
SDL_blit.h (ASSEMBLE_RGB):  add _ prefix to temp Pixel locals to avoid
  any possible shadowings.


The warnings were like the following:

In file included from src/video/SDL_blit_N.c:26:0:
src/video/SDL_blit_N.c: In function 'BlitNtoNKeyCopyAlpha':
src/video/SDL_blit_N.c:2421:24: warning: declaration of 'Pixel' shadows a previous local [-Wshadow]
                 Uint32 Pixel = ((*src32 & rgbmask) == ckey) ? *dst32 : *src32;
                        ^
src/video/SDL_blit.h:475:21: note: in definition of macro 'DUFFS_LOOP8'
     case 0: do {    pixel_copy_increment; /* fallthrough */             \
                     ^
src/video/SDL_blit_N.c:2419:13: note: in expansion of macro 'DUFFS_LOOP'
             DUFFS_LOOP(
             ^
src/video/SDL_blit_N.c:2399:12: warning: shadowed declaration is here [-Wshadow]
     Uint32 Pixel;
            ^
 2018-10-01 21:29:11 +03:00
Sam Lantinga
7df0f4fdac Fixed bug 4277 - warnings patch 
Sylvain

Patch a few warnings when using:
-Wmissing-prototypes -Wdocumentation -Wdocumentation-unknown-command

They are automatically enabled with -Wall
 2018-09-27 14:56:29 -07:00
Sam Lantinga
e3cc5b2c6b Updated copyright for 2018 2018-01-03 10:03:25 -08:00
Philipp Wiesemann
e5d9b25d8c Fixed comment style. 2017-02-26 21:20:39 +01:00
Sam Lantinga
45b774e3f7 Updated copyright for 2017 2017-01-01 18:33:28 -08:00
Sam Lantinga
818d1d3e80 Fixed bug 1646 - Warnings from clang with -Weverything 2016-11-15 01:30:08 -08:00
Sam Lantinga
39ba2ab835 Fixed NULL pointer dereference, thanks Ozkan Sezer 2016-10-22 17:53:03 -07:00
Sam Lantinga
5b14a943a8 Fixed bug 3466 - Can't build 2.0.5 on ppc64 
/home/fedora/SDL2-2.0.5/src/video/SDL_blit_N.c: In function 'calc_swizzle32':
/home/fedora/SDL2-2.0.5/src/video/SDL_blit_N.c:127:5: error: ISO C90 forbids mixed declarations and code [-Werror=declaration-after-statement]
     const vector unsigned char plus = VECUINT8_LITERAL(0x00, 0x00, 0x00, 0x00,
     ^
 2016-10-22 11:01:55 -07:00
Sam Lantinga
42065e785d Updated copyright to 2016 2016-01-02 10:10:34 -08:00
Philipp Wiesemann
0e45984fa0 Fixed crash if initialization of EGL failed but was tried again later. 
The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly
uninitialized data structure if loading the library first failed. A later try to
use EGL then skipped initialization and assumed it was previously successful
because the data structure now already existed. This led to at least one crash
in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was
dereferenced to make a call to eglBindAPI().
 2015-06-21 17:33:46 +02:00