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Merge pull request #6325 from cam900/boogwing_pri

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boogwing.cpp : Further priority acknowledge
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ajrhacker 2020-02-19 07:26:24 -05:00 committed by GitHub
commit dcbeb6ebdc
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 32 additions and 5 deletions
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37
src/mame/video/boogwing.cpp
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@ -70,10 +70,28 @@ void boogwing_state::mix_boogwing(screen_device &screen, bitmap_rgb32 &bitmap, c
alpha3 = m_deco_ace->get_alpha(0x1f);
// pix1 sprite vs pix2 sprite
if (pix1 & 0x400) // TODO - check only in pri mode 2??
spri1 = 8;
else
spri1 = 32;
switch (priority)
{
// TODO - check only in pri mode 0/2??
case 0x00:
{
if ((pix1 & 0x600) == 0x600)
spri1 = 2;
else if ((pix1 & 0x600) == 0x400)
spri1 = 8;
else
spri1 = 32;
}
break;
default:
{
if (pix1 & 0x400)
spri1 = 8;
else
spri1 = 32;
}
break;
}
// pix1 sprite vs playfield
switch (priority)
@ -87,6 +105,15 @@ void boogwing_state::mix_boogwing(screen_device &screen, bitmap_rgb32 &bitmap, c
}
break;
case 0x00:
{
if ((pix1 & 0x400) == 0x400)
pri1 = 16;
else
pri1 = 64;
}
break;
default:
{
if ((pix1 & 0x600) == 0x600)
@ -150,7 +177,7 @@ void boogwing_state::mix_boogwing(screen_device &screen, bitmap_rgb32 &bitmap, c
pri1 - 4/16/64 (sprite chip 1 pixel priority relative to bg)
pri2 - 4/16/64 (sprite chip 2 pixel priority relative to bg)
spri1 - 8/32 (priority of sprite chip 1 relative to other sprite chip)
spri1 - 2/8/32 (priority of sprite chip 1 relative to other sprite chip)
spri2 - 4/16/64 (priority of sprite chip 2 relative to other sprite chip)
alpha2 - 0x80/0xff alpha level of sprite chip 2 pixels (0x80 if enabled, 0xff if not)
alpha3 - alpha level of alpha-blended playfield pixels