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chore: add some type definitions for sprites

This commit is contained in:
Rekai Nyangadzayi Musuka 2022-10-21 05:12:25 -03:00
parent 6723bfb364
commit e3ae3635bc
1 changed files with 25 additions and 0 deletions
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25
src/ppu.zig
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@ -366,3 +366,28 @@ const ScreenEntry = extern union {
palette_bank: Bitfield(u16, 12, 4),
raw: u16,
};
const Attr0 = extern union {
y: Bitfield(u16, 0, 8),
rot_scaling: Bit(u16, 8), // This SBZ
disabled: Bit(u16, 9),
mode: Bitfield(u16, 10, 2),
mosaic: Bit(u16, 12),
is_8bpp: Bit(u16, 13),
shape: Bit(u16, 14, 2),
raw: u16,
};
const Attr1 = extern union {
x: Bitfield(u16, 0, 9),
h_flip: Bit(u16, 12),
v_flip: Bit(u16, 13),
size: Bitfield(u16, 14, 2),
raw: u16,
};
const Attr2 = extern union {
tile_id: Bitfield(u16, 0, 10),
rel_prio: Bitfield(u16, 10, 2),
pal_id: Bitfield(u16, 12, 3),
};