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Batch x11 dga mouse motion events into a single SDL event.

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Untested attempt to fix Bugzilla #609. Do not merge into 1.3 in any case.

--HG--
branch : SDL-1.2
This commit is contained in:
Ryan C. Gordon
2009-09-29 11:28:43 +00:00
parent 641dd7c194
commit ef701274b2
2 changed files with 17 additions and 3 deletions
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16
src/video/x11/SDL_x11events.c
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@@ -515,9 +515,9 @@ printf("KeymapNotify!\n");
#ifdef DEBUG_MOTION
printf("DGA motion: %d,%d\n", xevent.xmotion.x_root, xevent.xmotion.y_root);
#endif
posted = SDL_PrivateMouseMotion(0, 1,
xevent.xmotion.x_root,
xevent.xmotion.y_root);
/* batch DGA motion into one event, queued later. */
dga_x += xevent.xmotion.x_root;
dga_y += xevent.xmotion.y_root;
} else {
posted = X11_WarpedMotion(this,&xevent);
}
@@ -931,6 +931,16 @@ void X11_PumpEvents(_THIS)
X11_DispatchEvent(this);
++pending;
}
/* We batch up all the DGA motion events and generate a single SDL
event from them, since newer x.org releases might send a LOT of
these at once and flood the SDL event queue. --ryan. */
if (dga_x || dga_y) {
SDL_PrivateMouseMotion(0, 1, dga_x, dga_y);
dga_x = 0;
dga_y = 0;
}
if ( switch_waiting ) {
Uint32 now;

4
src/video/x11/SDL_x11video.h
View File

@@ -70,6 +70,8 @@ struct SDL_PrivateVideoData {
/* Direct Graphics Access extension information */
int using_dga;
Sint16 dga_x;
Sint16 dga_y;
#ifndef NO_SHARED_MEMORY
/* MIT shared memory extension information */
@@ -172,6 +174,8 @@ struct SDL_PrivateVideoData {
#define SDL_IC (this->hidden->X11_IC)
#define SDL_windowid (this->hidden->SDL_windowid)
#define using_dga (this->hidden->using_dga)
#define dga_x (this->hidden->dga_x)
#define dga_y (this->hidden->dga_y)
#define use_mitshm (this->hidden->use_mitshm)
#define shminfo (this->hidden->shminfo)
#define SDL_Ximage (this->hidden->Ximage)