Mercurial > sdl-ios-xcode
annotate include/SDL_version.h @ 3899:081aecdb0911 SDL-1.2
From: Gabriel Gambetta
To: SDL Mailing List <sdl@libsdl.org>
Date: Fri, 17 Nov 2006 00:39:29 -0200
Subject: [SDL] Alpha blending bug - fixed?
It turns out mm5 never got the correct value. This failed :
[...]
"movd %1, %%mm5\n\t"
: : "m" (amask), "m" (sf->Ashift) );
mm5 got 0xFF000018 instead of 0x00000018. However I did this :
Uint32 ashift = sf->Ashift;
[...]
"movd %1, %%mm5\n\t"
: : "m" (amask), "m" (ashift) );
and everything worked fine.
The only thing I could find out was that ashift is 32-bit aligned but
sf->Ashift isn't:
printf("ashift %8X [%d]\n", &ashift, (int)(&ashift) % 4);
printf("sf->Ashift %8X [%d]\n", &sf->Ashift, (int)(&sf->Ashift) % 4);
ashift at BFF0E0C4 [0]
sf->Ashift at 08AFB9CD [1]
Could this be the problem? If it is, the fix is extremely trivial.
Should I submit a patch?
--Gabriel
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Tue, 21 Nov 2006 23:17:00 +0000 |
| parents | cef30206da53 |
| children | b896fb0d4f9f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1222
diff
changeset
|
3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1222
diff
changeset
|
6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1222
diff
changeset
|
8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1222
diff
changeset
|
13 Lesser General Public License for more details. |
| 0 | 14 |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1222
diff
changeset
|
15 You should have received a copy of the GNU Lesser General Public |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1222
diff
changeset
|
16 License along with this library; if not, write to the Free Software |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1222
diff
changeset
|
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
|
251
b8688cfdc232
Updated the headers with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
241
diff
changeset
|
20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 /* This header defines the current SDL version */ | |
| 24 | |
| 25 #ifndef _SDL_version_h | |
| 26 #define _SDL_version_h | |
| 27 | |
|
1356
67114343400d
*** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
|
28 #include "SDL_stdinc.h" |
| 0 | 29 |
| 30 #include "begin_code.h" | |
| 31 /* Set up for C function definitions, even when using C++ */ | |
| 32 #ifdef __cplusplus | |
| 33 extern "C" { | |
| 34 #endif | |
| 35 | |
| 36 /* Printable format: "%d.%d.%d", MAJOR, MINOR, PATCHLEVEL | |
| 37 */ | |
| 38 #define SDL_MAJOR_VERSION 1 | |
| 39 #define SDL_MINOR_VERSION 2 | |
|
3873
cef30206da53
Bumped the version in subversion to 1.2.12
Sam Lantinga <slouken@libsdl.org>
parents:
1886
diff
changeset
|
40 #define SDL_PATCHLEVEL 12 |
| 0 | 41 |
|
911
04a403e4ccf5
Date: Mon, 3 May 2004 03:15:01 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
884
diff
changeset
|
42 typedef struct SDL_version { |
| 0 | 43 Uint8 major; |
| 44 Uint8 minor; | |
| 45 Uint8 patch; | |
| 46 } SDL_version; | |
| 47 | |
| 48 /* This macro can be used to fill a version structure with the compile-time | |
| 49 * version of the SDL library. | |
| 50 */ | |
| 51 #define SDL_VERSION(X) \ | |
| 52 { \ | |
| 53 (X)->major = SDL_MAJOR_VERSION; \ | |
| 54 (X)->minor = SDL_MINOR_VERSION; \ | |
| 55 (X)->patch = SDL_PATCHLEVEL; \ | |
| 56 } | |
| 57 | |
| 58 /* This macro turns the version numbers into a numeric value: | |
| 59 (1,2,3) -> (1203) | |
| 60 This assumes that there will never be more than 100 patchlevels | |
| 61 */ | |
| 62 #define SDL_VERSIONNUM(X, Y, Z) \ | |
|
1046
f09d5edfc7a3
Added some parentheses for a little more macro safety. Recommended by Petri
Ryan C. Gordon <icculus@icculus.org>
parents:
1024
diff
changeset
|
63 ((X)*1000 + (Y)*100 + (Z)) |
| 0 | 64 |
| 65 /* This is the version number macro for the current SDL version */ | |
| 66 #define SDL_COMPILEDVERSION \ | |
| 67 SDL_VERSIONNUM(SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL) | |
| 68 | |
| 69 /* This macro will evaluate to true if compiled with SDL at least X.Y.Z */ | |
| 70 #define SDL_VERSION_ATLEAST(X, Y, Z) \ | |
| 71 (SDL_COMPILEDVERSION >= SDL_VERSIONNUM(X, Y, Z)) | |
| 72 | |
| 73 /* This function gets the version of the dynamically linked SDL library. | |
| 74 it should NOT be used to fill a version structure, instead you should | |
| 75 use the SDL_Version() macro. | |
| 76 */ | |
|
337
9154ec9ca3d2
Explicitly specify the SDL API calling convention (C by default)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
77 extern DECLSPEC const SDL_version * SDLCALL SDL_Linked_Version(void); |
| 0 | 78 |
| 79 /* Ends C function definitions when using C++ */ | |
| 80 #ifdef __cplusplus | |
| 81 } | |
| 82 #endif | |
| 83 #include "close_code.h" | |
| 84 | |
| 85 #endif /* _SDL_version_h */ |