Hi, I'm writting my first GB emulator, and it's already playing some commercial and demos games almost flawlessly (tetris, SML1, SML2, etc).
However, some other games, show no transparent sprites. For example, the lion king menu screen, has 8x16 sprites for the options, and for some reason they are drawn with a black background. This also happens ingame and with other games, including dr mario.
I've compared the sprites with BGB vram debugger, and the palettes, and they are exactly the same as my emu (showing those black backgrounds in the tile viewer, but showing them transparent in game). All sprites in the lion king menu have OAM attributes = 0, so no priority, x flip or y flip present.
I have no clue what's going on, or what I'm missing, since sprites in other games work as intended. Blarggs cpu instructions rom also passes the 11 tests ok.
Any ideas ?
Thanks,
However, some other games, show no transparent sprites. For example, the lion king menu screen, has 8x16 sprites for the options, and for some reason they are drawn with a black background. This also happens ingame and with other games, including dr mario.
I've compared the sprites with BGB vram debugger, and the palettes, and they are exactly the same as my emu (showing those black backgrounds in the tile viewer, but showing them transparent in game). All sprites in the lion king menu have OAM attributes = 0, so no priority, x flip or y flip present.
I have no clue what's going on, or what I'm missing, since sprites in other games work as intended. Blarggs cpu instructions rom also passes the 11 tests ok.
Any ideas ?
Thanks,