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Add mutex to protect Voodoo swap count and pending. Should fix hangs

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sometimes changing video mode on Voodoo 3.
This commit is contained in:
SarahW 2020-11-03 21:17:29 +00:00
commit 193645a426
6 changed files with 37 additions and 6 deletions
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13
src/vid_voodoo_banshee.c
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@ -1239,7 +1239,9 @@ static void banshee_reg_writel(uint32_t addr, uint32_t val, void *p)
break;
case SST_swapPending:
thread_lock_mutex(voodoo->swap_mutex);
voodoo->swap_count++;
thread_unlock_mutex(voodoo->swap_mutex);
// voodoo->cmd_written++;
break;
@ -1842,17 +1844,22 @@ static void banshee_vsync_callback(svga_t *svga)
voodoo_t *voodoo = banshee->voodoo;
voodoo->retrace_count++;
thread_lock_mutex(voodoo->swap_mutex);
if (voodoo->swap_pending && (voodoo->retrace_count > voodoo->swap_interval))
{
memset(voodoo->dirty_line, 1, 1024);
voodoo->retrace_count = 0;
banshee_set_overlay_addr(banshee, voodoo->swap_offset);
if (voodoo->swap_count > 0)
voodoo->swap_count--;
voodoo->swap_pending = 0;
thread_unlock_mutex(voodoo->swap_mutex);
memset(voodoo->dirty_line, 1, 1024);
voodoo->retrace_count = 0;
banshee_set_overlay_addr(banshee, voodoo->swap_offset);
thread_set_event(voodoo->wake_fifo_thread);
voodoo->frame_count++;
}
else
thread_unlock_mutex(voodoo->swap_mutex);
voodoo->overlay.src_y = 0;
banshee->desktop_addr = banshee->vidDesktopStartAddr;