+static qboolean BuildXImages(int w, int h)
+{
+ int i;
+ if(DefaultDepth(vidx11_display, vidx11_screen) != 32 && DefaultDepth(vidx11_display, vidx11_screen) != 24)
+ {
+ Con_Printf("Sorry, we only support 24bpp and 32bpp modes\n");
+ VID_Shutdown();
+ return false;
+ }
+ // match to dpsoftrast's specs
+ if(vidx11_visual->red_mask != 0x00FF0000)
+ {
+ Con_Printf("Sorry, we only support BGR visuals\n");
+ VID_Shutdown();
+ return false;
+ }
+ if(vidx11_visual->green_mask != 0x0000FF00)
+ {
+ Con_Printf("Sorry, we only support BGR visuals\n");
+ VID_Shutdown();
+ return false;
+ }
+ if(vidx11_visual->blue_mask != 0x000000FF)
+ {
+ Con_Printf("Sorry, we only support BGR visuals\n");
+ VID_Shutdown();
+ return false;
+ }
+ if(vidx11_shmevent >= 0)
+ {
+ for(i = 0; i < 2; ++i)
+ {
+ vidx11_shminfo[i].shmid = -1;
+ vidx11_ximage[i] = XShmCreateImage(vidx11_display, vidx11_visual, DefaultDepth(vidx11_display, vidx11_screen), ZPixmap, NULL, &vidx11_shminfo[i], w, h);
+ if(!vidx11_ximage[i])
+ {
+ Con_Printf("Failed to get an XImage segment\n");
+ VID_Shutdown();
+ return false;
+ }
+ if(vidx11_ximage[i]->bytes_per_line != w * 4)
+ {
+ Con_Printf("Sorry, we only support linear pixel layout\n");
+ VID_Shutdown();
+ return false;
+ }
+ vidx11_shminfo[i].shmid = shmget(IPC_PRIVATE, vidx11_ximage[i]->bytes_per_line * vidx11_ximage[i]->height, IPC_CREAT|0777);
+ if(vidx11_shminfo[i].shmid < 0)
+ {
+ Con_Printf("Failed to get a shm segment\n");
+ VID_Shutdown();
+ return false;
+ }
+ vidx11_shminfo[i].shmaddr = vidx11_ximage[i]->data = shmat(vidx11_shminfo[i].shmid, NULL, 0);
+ if(!vidx11_shminfo[i].shmaddr)
+ {
+ Con_Printf("Failed to get a shm segment addresst\n");
+ VID_Shutdown();
+ return false;
+ }
+ vidx11_shminfo[i].readOnly = True;
+ XShmAttach(vidx11_display, &vidx11_shminfo[i]);
+ }
+ }
+ else
+ {
+ for(i = 0; i < 1; ++i) // we only need one buffer if we don't use Xshm
+ {
+ char *p = calloc(4, w * h);
+ vidx11_shminfo[i].shmid = -1;
+ vidx11_ximage[i] = XCreateImage(vidx11_display, vidx11_visual, DefaultDepth(vidx11_display, vidx11_screen), ZPixmap, 0, (char*)p, w, h, 8, 0);
+ if(!vidx11_ximage[i])
+ {
+ Con_Printf("Failed to get an XImage segment\n");
+ VID_Shutdown();
+ return false;
+ }
+ if(vidx11_ximage[i]->bytes_per_line != w * 4)
+ {
+ Con_Printf("Sorry, we only support linear pixel layout\n");
+ VID_Shutdown();
+ return false;
+ }
+ }
+ }
+ return true;
+}
+static void DestroyXImages(void)
+{
+ int i;
+ for(i = 0; i < 2; ++i)
+ {
+ if(vidx11_shminfo[i].shmid >= 0)
+ {
+ XShmDetach(vidx11_display, &vidx11_shminfo[i]);
+ XDestroyImage(vidx11_ximage[i]);
+ vidx11_ximage[i] = NULL;
+ shmdt(vidx11_shminfo[i].shmaddr);
+ shmctl(vidx11_shminfo[i].shmid, IPC_RMID, 0);
+ vidx11_shminfo[i].shmid = -1;
+ }
+ if(vidx11_ximage[i])
+ XDestroyImage(vidx11_ximage[i]);
+ vidx11_ximage[i] = 0;
+ }