feat: fix tile flipping issue
This commit is contained in:
parent
e3ae3635bc
commit
c6a544a824
|
@ -102,13 +102,13 @@ pub const Ppu = struct {
|
||||||
// Calculate the Address of the Tile in the designated Charblock
|
// Calculate the Address of the Tile in the designated Charblock
|
||||||
// We also take this opportunity to flip tiles if necessary
|
// We also take this opportunity to flip tiles if necessary
|
||||||
const tile_id: u32 = entry.tile_id.read();
|
const tile_id: u32 = entry.tile_id.read();
|
||||||
const row = if (entry.h_flip.read()) 7 - (y % 8) else y % 8; // Determine on which row in a tile we're on
|
const row = if (entry.v_flip.read()) 7 - (y % 8) else y % 8; // Determine on which row in a tile we're on
|
||||||
const tile_addr = char_base + (tile_len * tile_id) + (tile_row_offset * row);
|
const tile_addr = char_base + (tile_len * tile_id) + (tile_row_offset * row);
|
||||||
|
|
||||||
// Calculate on which column in a tile we're on
|
// Calculate on which column in a tile we're on
|
||||||
// Similarly to when we calculated the row, if we're in 4bpp we want to account
|
// Similarly to when we calculated the row, if we're in 4bpp we want to account
|
||||||
// for 1 byte consisting of two pixels
|
// for 1 byte consisting of two pixels
|
||||||
const col = if (entry.v_flip.read()) 7 - (x % 8) else x % 8;
|
const col = if (entry.h_flip.read()) 7 - (x % 8) else x % 8;
|
||||||
const tile = self.vram.buf[tile_addr + if (is_8bpp) col else col / 2];
|
const tile = self.vram.buf[tile_addr + if (is_8bpp) col else col / 2];
|
||||||
|
|
||||||
// If we're in 8bpp, then the tile value is an index into the palette,
|
// If we're in 8bpp, then the tile value is an index into the palette,
|
||||||
|
|
Loading…
Reference in New Issue