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annotate test/testver.c @ 3899:081aecdb0911 SDL-1.2

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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 d93862a3d821
children 782fd950bd46 c121d94672cb
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2 /* Test program to compare the compile-time version of SDL with the linked
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3 version of SDL
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4 */
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5
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6 #include <stdio.h>
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7 #include <stdlib.h>
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9 #include "SDL.h"
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10
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11 int main(int argc, char *argv[])
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12 {
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13 SDL_version compiled;
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14
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15 /* Initialize SDL */
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16 if ( SDL_Init(0) < 0 ) {
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17 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
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18 exit(1);
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19 }
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20 #ifdef DEBUG
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21 fprintf(stderr, "SDL initialized\n");
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22 #endif
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23 #if SDL_VERSION_ATLEAST(1, 2, 0)
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24 printf("Compiled with SDL 1.2 or newer\n");
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25 #else
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26 printf("Compiled with SDL older than 1.2\n");
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27 #endif
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28 SDL_VERSION(&compiled);
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29 printf("Compiled version: %d.%d.%d\n",
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30 compiled.major, compiled.minor, compiled.patch);
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31 printf("Linked version: %d.%d.%d\n",
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32 SDL_Linked_Version()->major,
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33 SDL_Linked_Version()->minor,
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34 SDL_Linked_Version()->patch);
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35 SDL_Quit();
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36 return(0);
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37 }