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handling tilemap mirroring

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This commit is contained in:
Clément Le Bihan
2020-10-15 23:16:59 +02:00
parent 6334b4805a
commit d1b0e039ef
3 changed files with 16 additions and 2 deletions
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5
sources/PPU/Background.cpp
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@@ -181,4 +181,9 @@ namespace ComSquare::PPU
else
this->_bpp = 2;
}
void Background::setTilemaps(Vector2<int> tilemaps)
{
this->_tileMaps = tilemaps;
}
}

1
sources/PPU/Background.hpp
View File

@@ -74,6 +74,7 @@ namespace ComSquare::PPU
//! @brief Set the bpp (bits per pixels) of the Background
//! @info The bpp can be 2, 4 or 8 (7 can be possible when BgMode is 7)
void setBpp(int bpp);
void setTilemaps(Vector2<int> tilemaps);
};
}

12
sources/PPU/PPU.cpp
View File

@@ -129,13 +129,19 @@ namespace ComSquare::PPU
this->_backgrounds[2].setCharacterSize(this->getCharacterSize(2));
this->_backgrounds[3].setCharacterSize(this->getCharacterSize(2));
this->_registers._bgsc[0].tilemapAddress = 0x4800U >> 10U;
this->_registers._bgsc[1].tilemapAddress = 0x4000U >> 10U;
this->_registers._bgsc[0].tilemapAddress = 0x4800U >> 10U; // 0x4800
this->_registers._bgsc[0].tilemapHorizontalMirroring = 1;
this->_registers._bgsc[1].tilemapAddress = 0x4000U >> 10U; // 0x4000
this->_registers._bgsc[1].tilemapHorizontalMirroring = 1;
this->_registers._bgsc[2].tilemapAddress = 0x5C00U >> 10U;
this->_backgrounds[0].setTileMapStartAddress(this->getTileMapStartAddress(1));
this->_backgrounds[0].setTilemaps(this->getBackgroundSize(1));
this->_backgrounds[1].setTileMapStartAddress(this->getTileMapStartAddress(1));
this->_backgrounds[1].setTilemaps(this->getBackgroundSize(1));
this->_backgrounds[2].setTileMapStartAddress(this->getTileMapStartAddress(2));
this->_backgrounds[2].setTilemaps(this->getBackgroundSize(2));
this->_backgrounds[3].setTileMapStartAddress(this->getTileMapStartAddress(2));
this->_backgrounds[3].setTilemaps(this->getBackgroundSize(2));
this->_backgrounds[4].setTileMapStartAddress(this->getTileMapStartAddress(3));
this->_backgrounds[5].setTileMapStartAddress(this->getTileMapStartAddress(3));
@@ -235,6 +241,8 @@ namespace ComSquare::PPU
// update background tilemap address
this->_backgrounds[addr - 0x07].setTileMapStartAddress(this->getTileMapStartAddress(addr - 0x07 + 1));
this->_backgrounds[addr - 0x07 + 1].setTileMapStartAddress(this->getTileMapStartAddress(addr - 0x07 + 1));
this->_backgrounds[addr - 0x07].setTilemaps({this->_registers._bgsc[addr - 0x07].tilemapHorizontalMirroring, this->_registers._bgsc[addr - 0x07].tilemapVerticalMirroring});
this->_backgrounds[addr - 0x07 + 1].setTilemaps({this->_registers._bgsc[addr - 0x07].tilemapHorizontalMirroring, this->_registers._bgsc[addr - 0x07].tilemapVerticalMirroring});
break;
case ppuRegisters::bg12nba:
case ppuRegisters::bg34nba: