Mercurial > sdl-ios-xcode
annotate TODO @ 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> |
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date | Tue, 21 Nov 2006 23:17:00 +0000 (2006-11-21) |
parents | f12379c41042 |
children | 0a53c90a37f9 c121d94672cb |
rev | line source |
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0 | 1 |
2 Wish list for the 1.3 development branch: | |
1534
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Sam Lantinga <slouken@libsdl.org>
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3 http://bugzilla.libsdl.org/ |
0 | 4 |
5 * Add mousewheel events (new unified event architecture?) | |
6 * DirectInput joystick support needs to be implemented | |
7 * Be able to enumerate and select available audio and video drivers | |
1621 | 8 * Fullscreen video mode support for Mac OS X |
0 | 9 * Explicit vertical retrace wait (maybe separate from SDL_Flip?) |
10 * Shaped windows, windows without borders | |
11 * Multiple windows, multiple display support | |
12 * SDL_INIT_EVENTTHREAD on Windows and MacOS? | |
13 * Add a timestamp to events | |
14 * Add audio input API | |
2
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Sam Lantinga <slouken@lokigames.com>
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15 * Add hardware accelerated scaled blit |
836aaee3f39e
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Sam Lantinga <slouken@lokigames.com>
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16 * Add hardware accelerated alpha blits |
836aaee3f39e
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Sam Lantinga <slouken@lokigames.com>
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17 * Redesign blitting architecture to allow blit plugins |
0 | 18 |
19 In the jump from 1.2 to 1.3, we should change the SDL_Rect members to | |
20 int and evaluate all the rest of the datatypes. This is the only place | |
21 we should do it though, since the 1.2 series should not break binary | |
22 compatibility in this way. | |
150 | 23 |
24 Requests: | |
25 * PCM and CDROM volume control (deprecated, but possible) |