mirror of https://github.com/bsnes-emu/bsnes.git
169 lines
3.5 KiB
C++
169 lines
3.5 KiB
C++
struct PPU : Thread, PPUcounter {
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alwaysinline auto interlace() const -> bool { return display.interlace; }
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alwaysinline auto overscan() const -> bool { return display.overscan; }
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alwaysinline auto vdisp() const -> uint { return !regs.overscan ? 225 : 240; }
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PPU();
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~PPU();
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alwaysinline auto step(uint clocks) -> void;
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alwaysinline auto synchronizeCPU() -> void;
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static auto Enter() -> void;
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auto main() -> void;
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auto power() -> void;
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auto reset() -> void;
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auto serialize(serializer&) -> void;
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//memory.cpp
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alwaysinline auto getVramAddress() -> uint16;
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alwaysinline auto vramRead(uint addr) -> uint8;
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alwaysinline auto vramWrite(uint addr, uint8 data) -> void;
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alwaysinline auto oamRead(uint addr) -> uint8;
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alwaysinline auto oamWrite(uint addr, uint8 data) -> void;
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alwaysinline auto cgramRead(uint addr) -> uint8;
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alwaysinline auto cgramWrite(uint addr, uint8 data) -> void;
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//mmio.cpp
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auto read(uint24 addr, uint8 data) -> uint8;
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auto write(uint24 addr, uint8 data) -> void;
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auto latchCounters() -> void;
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auto updateVideoMode() -> void;
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uint8 vram[64 * 1024];
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uint8 oam[544];
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uint8 cgram[512];
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privileged:
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uint ppu1_version = 1; //allowed: 1
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uint ppu2_version = 3; //allowed: 1, 2, 3
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uint32* output = nullptr;
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struct {
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bool interlace;
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bool overscan;
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} display;
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alwaysinline auto addClocks(uint) -> void;
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auto scanline() -> void;
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auto frame() -> void;
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auto refresh() -> void;
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struct Registers {
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uint8 ppu1_mdr;
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uint8 ppu2_mdr;
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uint16 vram_readbuffer;
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uint8 oam_latchdata;
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uint8 cgram_latchdata;
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uint8 bgofs_latchdata;
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uint8 mode7_latchdata;
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bool counters_latched;
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bool latch_hcounter;
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bool latch_vcounter;
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uint10 oam_iaddr;
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uint9 cgram_iaddr;
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//$2100 INIDISP
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bool display_disable;
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uint4 display_brightness;
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//$2102 OAMADDL
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//$2103 OAMADDH
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uint10 oam_baseaddr;
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uint10 oam_addr;
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bool oam_priority;
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//$2105 BGMODE
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bool bg3_priority;
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uint8 bgmode;
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//$210d BG1HOFS
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uint16 mode7_hoffset;
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//$210e BG1VOFS
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uint16 mode7_voffset;
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//$2115 VMAIN
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bool vram_incmode;
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uint2 vram_mapping;
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uint8 vram_incsize;
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//$2116 VMADDL
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//$2117 VMADDH
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uint16 vram_addr;
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//$211a M7SEL
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uint2 mode7_repeat;
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bool mode7_vflip;
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bool mode7_hflip;
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//$211b M7A
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uint16 m7a;
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//$211c M7B
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uint16 m7b;
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//$211d M7C
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uint16 m7c;
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//$211e M7D
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uint16 m7d;
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//$211f M7X
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uint16 m7x;
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//$2120 M7Y
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uint16 m7y;
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//$2121 CGADD
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uint9 cgram_addr;
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//$2133 SETINI
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bool mode7_extbg;
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bool pseudo_hires;
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bool overscan;
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bool interlace;
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//$213c OPHCT
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uint16 hcounter;
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//$213d OPVCT
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uint16 vcounter;
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} regs;
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#include "background/background.hpp"
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#include "screen/screen.hpp"
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#include "sprite/sprite.hpp"
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#include "window/window.hpp"
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Background bg1;
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Background bg2;
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Background bg3;
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Background bg4;
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Sprite sprite;
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Window window;
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Screen screen;
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friend class PPU::Background;
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friend class PPU::Sprite;
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friend class PPU::Window;
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friend class PPU::Screen;
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friend class Scheduler;
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struct Debugger {
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hook<auto (uint16, uint8) -> void> vram_read;
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hook<auto (uint16, uint8) -> void> oam_read;
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hook<auto (uint16, uint8) -> void> cgram_read;
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hook<auto (uint16, uint8) -> void> vram_write;
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hook<auto (uint16, uint8) -> void> oam_write;
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hook<auto (uint16, uint8) -> void> cgram_write;
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} debugger;
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};
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extern PPU ppu;
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