Mercurial > sdl-ios-xcode
view src/main/macos/exports/SDL.x @ 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 | 84cecd0b64b4 |
| children | 0a53c90a37f9 1e191391e68d |
line wrap: on
line source
SDL_Init SDL_InitSubSystem SDL_QuitSubSystem SDL_WasInit SDL_Quit SDL_GetAppState SDL_AudioInit SDL_AudioQuit SDL_AudioDriverName SDL_OpenAudio SDL_GetAudioStatus SDL_PauseAudio SDL_LoadWAV_RW SDL_FreeWAV SDL_BuildAudioCVT SDL_ConvertAudio SDL_MixAudio SDL_LockAudio SDL_UnlockAudio SDL_CloseAudio SDL_CDNumDrives SDL_CDName SDL_CDOpen SDL_CDStatus SDL_CDPlayTracks SDL_CDPlay SDL_CDPause SDL_CDResume SDL_CDStop SDL_CDEject SDL_CDClose SDL_HasRDTSC SDL_HasMMX SDL_HasMMXExt SDL_Has3DNow SDL_Has3DNowExt SDL_HasSSE SDL_HasSSE2 SDL_HasAltiVec SDL_SetError SDL_GetError SDL_ClearError SDL_Error SDL_PumpEvents SDL_PeepEvents SDL_PollEvent SDL_WaitEvent SDL_PushEvent SDL_SetEventFilter SDL_GetEventFilter SDL_EventState SDL_NumJoysticks SDL_JoystickName SDL_JoystickOpen SDL_JoystickOpened SDL_JoystickIndex SDL_JoystickNumAxes SDL_JoystickNumBalls SDL_JoystickNumHats SDL_JoystickNumButtons SDL_JoystickUpdate SDL_JoystickEventState SDL_JoystickGetAxis SDL_JoystickGetHat SDL_JoystickGetBall SDL_JoystickGetButton SDL_JoystickClose SDL_EnableUNICODE SDL_EnableKeyRepeat SDL_GetKeyRepeat SDL_GetKeyState SDL_GetModState SDL_SetModState SDL_GetKeyName SDL_LoadObject SDL_LoadFunction SDL_UnloadObject SDL_GetMouseState SDL_GetRelativeMouseState SDL_WarpMouse SDL_CreateCursor SDL_SetCursor SDL_GetCursor SDL_FreeCursor SDL_ShowCursor SDL_CreateMutex SDL_mutexP SDL_mutexV SDL_DestroyMutex SDL_CreateSemaphore SDL_DestroySemaphore SDL_SemWait SDL_SemTryWait SDL_SemWaitTimeout SDL_SemPost SDL_SemValue SDL_CreateCond SDL_DestroyCond SDL_CondSignal SDL_CondBroadcast SDL_CondWait SDL_CondWaitTimeout SDL_RWFromFile SDL_RWFromFP SDL_RWFromMem SDL_RWFromConstMem SDL_AllocRW SDL_FreeRW SDL_ReadLE16 SDL_ReadBE16 SDL_ReadLE32 SDL_ReadBE32 SDL_ReadLE64 SDL_ReadBE64 SDL_WriteLE16 SDL_WriteBE16 SDL_WriteLE32 SDL_WriteBE32 SDL_WriteLE64 SDL_WriteBE64 SDL_GetWMInfo SDL_CreateThread SDL_CreateThread SDL_ThreadID SDL_GetThreadID SDL_WaitThread SDL_KillThread SDL_GetTicks SDL_Delay SDL_SetTimer SDL_AddTimer SDL_RemoveTimer SDL_Linked_Version SDL_VideoInit SDL_VideoQuit SDL_VideoDriverName SDL_GetVideoSurface SDL_GetVideoInfo SDL_VideoModeOK SDL_ListModes SDL_SetVideoMode SDL_UpdateRects SDL_UpdateRect SDL_Flip SDL_SetGamma SDL_SetGammaRamp SDL_GetGammaRamp SDL_SetColors SDL_SetPalette SDL_MapRGB SDL_MapRGBA SDL_GetRGB SDL_GetRGBA SDL_CreateRGBSurface SDL_CreateRGBSurfaceFrom SDL_FreeSurface SDL_LockSurface SDL_UnlockSurface SDL_LoadBMP_RW SDL_SaveBMP_RW SDL_SetColorKey SDL_SetAlpha SDL_SetClipRect SDL_GetClipRect SDL_ConvertSurface SDL_UpperBlit SDL_LowerBlit SDL_FillRect SDL_DisplayFormat SDL_DisplayFormatAlpha SDL_CreateYUVOverlay SDL_LockYUVOverlay SDL_UnlockYUVOverlay SDL_DisplayYUVOverlay SDL_FreeYUVOverlay SDL_GL_LoadLibrary SDL_GL_GetProcAddress SDL_GL_SetAttribute SDL_GL_GetAttribute SDL_GL_SwapBuffers SDL_GL_UpdateRects SDL_GL_Lock SDL_GL_Unlock SDL_WM_SetCaption SDL_WM_GetCaption SDL_WM_SetIcon SDL_WM_IconifyWindow SDL_WM_ToggleFullScreen SDL_WM_GrabInput SDL_SoftStretch SDL_putenv SDL_getenv SDL_qsort SDL_revcpy SDL_strlcpy SDL_strlcat SDL_strdup SDL_strrev SDL_strupr SDL_strlwr SDL_ltoa SDL_ultoa SDL_strcasecmp SDL_strncasecmp SDL_snprintf SDL_vsnprintf SDL_iconv SDL_iconv_string SDL_InitQuickDraw