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voodoo.c: Implemented Voodoo 3 overlay scaling

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This commit is contained in:
Ville Linde 2012-09-24 15:32:45 +00:00
parent e624f84f34
commit c1de9bced6
1 changed files with 19 additions and 4 deletions
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23
src/emu/video/voodoo.c
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@ -4756,18 +4756,33 @@ WRITE32_DEVICE_HANDLER( banshee_io_w )
break;
case io_vidScreenSize:
/* warning: this is a hack for now! We should really compute the screen size */
/* from the CRTC registers */
COMBINE_DATA(&v->banshee.io[offset]);
if (data & 0xfff)
v->fbi.width = data & 0xfff;
if (data & 0xfff000)
v->fbi.height = (data >> 12) & 0xfff;
v->screen->set_visible_area(0, v->fbi.width - 1, 0, v->fbi.height - 1);
/* fall through */
case io_vidOverlayDudx:
case io_vidOverlayDvdy:
{
/* warning: this is a hack for now! We should really compute the screen size */
/* from the CRTC registers */
COMBINE_DATA(&v->banshee.io[offset]);
int width = v->fbi.width;
int height = v->fbi.height;
if (v->banshee.io[io_vidOverlayDudx] != 0)
width = (v->fbi.width * v->banshee.io[io_vidOverlayDudx]) / 1048576;
if (v->banshee.io[io_vidOverlayDvdy] != 0)
height = (v->fbi.height * v->banshee.io[io_vidOverlayDvdy]) / 1048576;
v->screen->set_visible_area(0, width - 1, 0, height - 1);
adjust_vblank_timer(v);
if (LOG_REGISTERS)
logerror("%s:banshee_io_w(%s) = %08X & %08X\n", device->machine().describe_context(), banshee_io_reg_name[offset], data, mem_mask);
break;
}
case io_lfbMemoryConfig:
v->fbi.lfb_base = (data & 0x1fff) << 10;