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Fixed hang in Voodoo emulation when a framebuffer read occurs while a swap request is pending - fixes Tomb Raider.

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This commit is contained in:
TomW 2015-05-31 16:43:55 +01:00
commit ca7bd3740b
1 changed files with 21 additions and 3 deletions
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24
src/vid_voodoo.c
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@ -229,6 +229,8 @@ typedef struct voodoo_t
fifo_entry_t fifo[FIFO_SIZE];
int fifo_read_idx, fifo_write_idx;
int cmd_read, cmd_written;
int flush;
} voodoo_t;
enum
@ -2406,6 +2408,14 @@ static void voodoo_reg_writel(uint32_t addr, uint32_t val, void *p)
{
thread_wait_event(voodoo->wake_render_thread, -1);
thread_reset_event(voodoo->wake_render_thread);
if (voodoo->swap_pending && voodoo->flush)
{
/*Main thread is waiting for FIFO to empty, so skip vsync wait and just swap*/
voodoo->front_offset = voodoo->params.front_offset;
voodoo->swap_count--;
voodoo->swap_pending = 0;
break;
}
}
}
voodoo->cmd_read++;
@ -3306,9 +3316,13 @@ static uint16_t voodoo_readw(uint32_t addr, void *p)
if ((addr & 0xc00000) == 0x400000) /*Framebuffer*/
{
uint16_t temp;
voodoo->flush = 1;
while (!FIFO_EMPTY)
{
thread_wait_event(voodoo->not_full_event, -1);
thread_set_event(voodoo->wake_render_thread);
}
voodoo->flush = 0;
return voodoo_fb_readw(addr, voodoo);
}
@ -3329,8 +3343,13 @@ static uint32_t voodoo_readl(uint32_t addr, void *p)
}
else if (addr & 0x400000) /*Framebuffer*/
{
voodoo->flush = 1;
while (!FIFO_EMPTY)
{
thread_wait_event(voodoo->not_full_event, -1);
thread_set_event(voodoo->wake_render_thread);
}
voodoo->flush = 0;
temp = voodoo_fb_readl(addr, voodoo);
}
@ -3534,9 +3553,8 @@ static void render_thread(void *param)
break;
}
fifo->addr_type = FIFO_INVALID;
voodoo->fifo_read_idx++;
fifo->addr_type = FIFO_INVALID;
thread_set_event(voodoo->not_full_event);
end_time = timer_read();