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ViRGE fixes :

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- Create 2D FIFO thread and events on ViRGE 325 as well as DX - fixes crash when blitter first used
- Wake 2D FIFO thread when writing to empty/nearly empty FIFO - fixes ViRGE 325 Windows 95 drivers
- Read status register on byte access - fixes ViRGE 325 Windows 95 drivers
This commit is contained in:
SarahW 2016-05-10 21:07:13 +01:00
commit 75ed8c9641
1 changed files with 18 additions and 0 deletions
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18
src/vid_s3_virge.c
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@ -718,10 +718,22 @@ static void s3_virge_wait_fifo_idle(virge_t *virge)
static uint8_t s3_virge_mmio_read(uint32_t addr, void *p)
{
virge_t *virge = (virge_t *)p;
uint8_t ret;
reg_reads++;
// pclog("New MMIO readb %08X\n", addr);
switch (addr & 0xffff)
{
case 0x8505:
if (virge->s3d_busy || virge->virge_busy || !FIFO_EMPTY)
ret = 0x10;
else
ret = 0x10 | (1 << 5);
if (!virge->virge_busy)
wake_fifo_thread(virge);
return ret;
case 0x83b0: case 0x83b1: case 0x83b2: case 0x83b3:
case 0x83b4: case 0x83b5: case 0x83b6: case 0x83b7:
case 0x83b8: case 0x83b9: case 0x83ba: case 0x83bb:
@ -1272,6 +1284,8 @@ static void s3_virge_queue(virge_t *virge, uint32_t addr, uint32_t val, uint32_t
if (FIFO_ENTRIES > 0xe000)
wake_fifo_thread(virge);
if (FIFO_ENTRIES > 0xe000 || FIFO_ENTRIES < 8)
wake_fifo_thread(virge);
}
static void s3_virge_mmio_write(uint32_t addr, uint8_t val, void *p)
@ -3814,6 +3828,10 @@ static void *s3_virge_init()
virge->wake_main_thread = thread_create_event();
virge->not_full_event = thread_create_event();
virge->render_thread = thread_create(render_thread, virge);
virge->wake_fifo_thread = thread_create_event();
virge->fifo_not_full_event = thread_create_event();
virge->fifo_thread = thread_create(fifo_thread, virge);
return virge;
}