bsnes/higan/sfc/ppu/background.hpp

88 lines
1.7 KiB
C++

struct Background {
Background(uint id) : id(id) {}
alwaysinline auto hires() const -> bool;
alwaysinline auto hoffset() const -> uint16;
alwaysinline auto voffset() const -> uint16;
auto frame() -> void;
auto scanline() -> void;
auto begin() -> void;
auto run(bool screen) -> void;
auto power() -> void;
auto getTile() -> void;
auto getTileColor() -> uint;
auto getTile(uint x, uint y) -> uint16;
alwaysinline auto clip(int n) -> int;
auto beginMode7() -> void;
auto runMode7() -> void;
auto serialize(serializer&) -> void;
struct ID { enum : uint { BG1, BG2, BG3, BG4 }; };
const uint id;
struct Mode { enum : uint { BPP2, BPP4, BPP8, Mode7, Inactive }; };
struct ScreenSize { enum : uint { Size32x32, Size32x64, Size64x32, Size64x64 }; };
struct TileSize { enum : uint { Size8x8, Size16x16 }; };
struct Screen { enum : uint { Above, Below }; };
struct IO {
uint16 tiledataAddress;
uint16 screenAddress;
uint2 screenSize;
uint1 tileSize;
uint8 mode;
uint8 priority[2];
uint1 aboveEnable;
uint1 belowEnable;
uint16 hoffset;
uint16 voffset;
} io;
struct Latch {
uint16 hoffset;
uint16 voffset;
} latch;
struct Pixel {
uint8 priority; //0 = none (transparent)
uint8 palette;
uint16 tile;
} above, below;
struct Output {
Pixel above;
Pixel below;
} output;
struct Mosaic {
static uint4 size;
uint1 enable;
uint16 vcounter;
uint16 hcounter;
uint16 voffset;
uint16 hoffset;
Pixel pixel;
} mosaic;
int x;
int y;
uint3 tileCounter;
uint16 tile;
uint8 priority;
uint3 paletteNumber;
uint8 paletteIndex;
uint32 data[2];
friend class PPU;
};