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Implemented Voodoo triple buffering properly

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This commit is contained in:
SarahW 2016-12-17 21:54:44 +00:00
commit 9c1ac5cc37
1 changed files with 28 additions and 14 deletions
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42
src/vid_voodoo.c
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@ -3988,6 +3988,24 @@ enum
CHIP_TREX2 = 0x8
};
static void wait_for_swap_complete(voodoo_t *voodoo)
{
while (voodoo->swap_pending)
{
thread_wait_event(voodoo->wake_fifo_thread, -1);
thread_reset_event(voodoo->wake_fifo_thread);
if ((voodoo->swap_pending && voodoo->flush) || FIFO_ENTRIES == 65536)
{
/*Main thread is waiting for FIFO to empty, so skip vsync wait and just swap*/
memset(voodoo->dirty_line, 1, 1024);
voodoo->front_offset = voodoo->params.front_offset;
voodoo->swap_count--;
voodoo->swap_pending = 0;
break;
}
}
}
static void voodoo_reg_writel(uint32_t addr, uint32_t val, void *p)
{
voodoo_t *voodoo = (voodoo_t *)p;
@ -4035,26 +4053,22 @@ static void voodoo_reg_writel(uint32_t addr, uint32_t val, void *p)
voodoo->front_offset = voodoo->params.front_offset;
voodoo->swap_count--;
}
else if (TRIPLE_BUFFER)
{
if (voodoo->swap_pending)
wait_for_swap_complete(voodoo);
voodoo->swap_interval = (val >> 1) & 0xff;
voodoo->swap_offset = voodoo->params.front_offset;
voodoo->swap_pending = 1;
}
else
{
voodoo->swap_interval = (val >> 1) & 0xff;
voodoo->swap_offset = voodoo->params.front_offset;
voodoo->swap_pending = 1;
while (voodoo->swap_pending)
{
thread_wait_event(voodoo->wake_fifo_thread, -1);
thread_reset_event(voodoo->wake_fifo_thread);
if ((voodoo->swap_pending && voodoo->flush) || FIFO_ENTRIES == 65536)
{
/*Main thread is waiting for FIFO to empty, so skip vsync wait and just swap*/
memset(voodoo->dirty_line, 1, 1024);
voodoo->front_offset = voodoo->params.front_offset;
voodoo->swap_count--;
voodoo->swap_pending = 0;
break;
}
}
wait_for_swap_complete(voodoo);
}
voodoo->cmd_read++;
break;