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Optimise Voodoo FIFO processing of framebuffer / texture / register

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writes. Speeds up games that write large amounts of data to the FIFO,
eg menus in Expendable.
This commit is contained in:
SarahW 2020-07-06 22:19:38 +01:00
commit 3cbcf5f575
1 changed files with 32 additions and 14 deletions
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46
src/vid_voodoo.c
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@ -6190,12 +6190,8 @@ static void voodoo_writew(uint32_t addr, uint16_t val, void *p)
voodoo_t *voodoo = (voodoo_t *)p;
voodoo->wr_count++;
addr &= 0xffffff;
if (addr == voodoo->last_write_addr+4)
cycles -= voodoo->burst_time;
else
cycles -= voodoo->write_time;
voodoo->last_write_addr = addr;
cycles -= voodoo->write_time;
if ((addr & 0xc00000) == 0x400000) /*Framebuffer*/
queue_command(voodoo, addr | FIFO_WRITEW_FB, val);
@ -6585,23 +6581,45 @@ static void fifo_thread(void *param)
switch (fifo->addr_type & FIFO_TYPE)
{
case FIFO_WRITEL_REG:
voodoo_reg_writel(fifo->addr_type & FIFO_ADDR, fifo->val, voodoo);
while ((fifo->addr_type & FIFO_TYPE) == FIFO_WRITEL_REG)
{
voodoo_reg_writel(fifo->addr_type & FIFO_ADDR, fifo->val, voodoo);
fifo->addr_type = FIFO_INVALID;
voodoo->fifo_read_idx++;
fifo = &voodoo->fifo[voodoo->fifo_read_idx & FIFO_MASK];
}
break;
case FIFO_WRITEW_FB:
wait_for_render_thread_idle(voodoo);
voodoo_fb_writew(fifo->addr_type & FIFO_ADDR, fifo->val, voodoo);
while ((fifo->addr_type & FIFO_TYPE) == FIFO_WRITEW_FB)
{
voodoo_fb_writew(fifo->addr_type & FIFO_ADDR, fifo->val, voodoo);
fifo->addr_type = FIFO_INVALID;
voodoo->fifo_read_idx++;
fifo = &voodoo->fifo[voodoo->fifo_read_idx & FIFO_MASK];
}
break;
case FIFO_WRITEL_FB:
wait_for_render_thread_idle(voodoo);
voodoo_fb_writel(fifo->addr_type & FIFO_ADDR, fifo->val, voodoo);
while ((fifo->addr_type & FIFO_TYPE) == FIFO_WRITEL_FB)
{
voodoo_fb_writel(fifo->addr_type & FIFO_ADDR, fifo->val, voodoo);
fifo->addr_type = FIFO_INVALID;
voodoo->fifo_read_idx++;
fifo = &voodoo->fifo[voodoo->fifo_read_idx & FIFO_MASK];
}
break;
case FIFO_WRITEL_TEX:
if (!(fifo->addr_type & 0x400000))
voodoo_tex_writel(fifo->addr_type & FIFO_ADDR, fifo->val, voodoo);
while ((fifo->addr_type & FIFO_TYPE) == FIFO_WRITEL_TEX)
{
if (!(fifo->addr_type & 0x400000))
voodoo_tex_writel(fifo->addr_type & FIFO_ADDR, fifo->val, voodoo);
fifo->addr_type = FIFO_INVALID;
voodoo->fifo_read_idx++;
fifo = &voodoo->fifo[voodoo->fifo_read_idx & FIFO_MASK];
}
break;
}
voodoo->fifo_read_idx++;
fifo->addr_type = FIFO_INVALID;
if (FIFO_ENTRIES > 0xe000)
thread_set_event(voodoo->fifo_not_full_event);
@ -6653,7 +6671,7 @@ static void fifo_thread(void *param)
if ((addr & 0x3ff) == SST_triangleCMD || (addr & 0x3ff) == SST_ftriangleCMD ||
(addr & 0x3ff) == SST_fastfillCMD || (addr & 0x3ff) == SST_nopCMD)
voodoo->cmd_written_fifo++;
voodoo_reg_writel(addr, val, voodoo);
if (header & (1 << 15))