Mercurial > sdl-ios-xcode
annotate test/README @ 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 | 68f2b997758e |
| children | e6cd882e3ac0 5baad3758427 |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 These are test programs for the SDL library: | |
| 3 | |
| 4 testver Check the version and dynamic loading and endianness | |
| 5 testtypes Check to see if the data types are the correct size | |
| 6 testhread Hacked up test of multi-threading | |
| 7 testlock Hacked up test of multi-threading and locking | |
| 8 testerror Tests multi-threaded error handling | |
| 9 testsem Tests SDL's semaphore implementation | |
| 10 testtimer Test the timer facilities | |
| 11 loopwave Audio test -- loop playing a WAV file | |
| 12 testcdrom Sample audio CD control program | |
| 13 testkeys List the available keyboard keys | |
|
886
05c551e5bc64
Date: Sat, 24 Apr 2004 15:13:32 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
14 testvidinfo Show the pixel format of the display and perfom the benchmark |
| 0 | 15 checkkeys Watch the key events to check the keyboard |
| 16 testwin Display a BMP image at various depths | |
| 17 graywin Display a gray gradient and center mouse on spacebar | |
| 18 testsprite Example of fast sprite movement on the screen | |
| 19 testbitmap Test displaying 1-bit bitmaps | |
| 20 testalpha Display an alpha faded icon -- paint with mouse | |
| 21 testwm Test window manager -- title, icon, events | |
| 22 threadwin Test multi-threaded event handling | |
| 23 testgl A very simple example of using OpenGL with SDL | |
| 24 testjoystick List joysticks and watch joystick events | |
|
886
05c551e5bc64
Date: Sat, 24 Apr 2004 15:13:32 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
25 testoverlay Tests the software/hardware overlay functionality. |
|
05c551e5bc64
Date: Sat, 24 Apr 2004 15:13:32 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
26 testoverlay2 Tests the overlay flickering/scaling during playback. |
|
1039
68f2b997758e
Added testblitspeed to aid in profiling of SDL's blitters.
Ryan C. Gordon <icculus@icculus.org>
parents:
886
diff
changeset
|
27 testblitspeed Tests performance of SDL's blitters and converters. |
|
68f2b997758e
Added testblitspeed to aid in profiling of SDL's blitters.
Ryan C. Gordon <icculus@icculus.org>
parents:
886
diff
changeset
|
28 |