Mercurial > sdl-ios-xcode
diff src/video/dga/SDL_dgavideo.h @ 101:825b2fa28e2e
DGA video driver is now thread-safe
Improved DGA hardware acceleration code
| author | Sam Lantinga <slouken@lokigames.com> |
|---|---|
| date | Thu, 12 Jul 2001 20:42:22 +0000 |
| parents | 74212992fb08 |
| children | 2136ea8953f9 |
line wrap: on
line diff
--- a/src/video/dga/SDL_dgavideo.h Wed Jul 11 20:18:52 2001 +0000 +++ b/src/video/dga/SDL_dgavideo.h Thu Jul 12 20:42:22 2001 +0000 @@ -37,11 +37,22 @@ /* Hidden "this" pointer for the video functions */ #define _THIS SDL_VideoDevice *this +/* Define this if you need the DGA driver to be thread-safe */ +#define LOCK_DGA_DISPLAY +#ifdef LOCK_DGA_DISPLAY +#define LOCK_DISPLAY() SDL_mutexP(event_lock) +#define UNLOCK_DISPLAY() SDL_mutexV(event_lock) +#else +#define LOCK_DISPLAY() +#define UNLOCK_DISPLAY() +#endif + /* This is the structure we use to keep track of video memory */ typedef struct vidmem_bucket { struct vidmem_bucket *prev; - unsigned int used; + int used; + int dirty; Uint8 *base; unsigned int size; struct vidmem_bucket *next; @@ -82,6 +93,9 @@ /* Used to handle DGA events */ int event_base; +#ifdef LOCK_DGA_DISPLAY + SDL_mutex *event_lock; +#endif }; /* Old variable names */ #define DGA_Display (this->hidden->DGA_Display) @@ -102,5 +116,6 @@ #define surfaces_memleft (this->hidden->surfaces_memleft) #define hw_lock (this->hidden->hw_lock) #define DGA_event_base (this->hidden->event_base) +#define event_lock (this->hidden->event_lock) #endif /* _SDL_dgavideo_h */