@@ -1,10 +1,89 @@
#include "ppu.h"
#include <array>
#include <tuple>
#include "nes/core/invalid_address.h"
#include "nes/core/pixel.h"
namespace {
using n_e_s::core::Color;
// 2C02 VGA Palette from:
// https://wiki.nesdev.org/w/index.php?title=PPU_palettes#2C02
constexpr std::array kPalette{
Color{84, 84, 84},
Color{0, 30, 116},
Color{8, 16, 144},
Color{48, 0, 136},
Color{68, 0, 100},
Color{92, 0, 48},
Color{84, 4, 0},
Color{60, 24, 0},
Color{32, 42, 0},
Color{8, 58, 0},
Color{0, 64, 0},
Color{0, 60, 0},
Color{0, 50, 60},
Color{0, 0, 0},
Color{0, 0, 0},
Color{0, 0, 0},
Color{152, 150, 152}, // 10
Color{8, 76, 196},
Color{48, 50, 236},
Color{92, 30, 228},
Color{136, 20, 176},
Color{160, 20, 100},
Color{152, 34, 32},
Color{120, 60, 0},
Color{84, 90, 0},
Color{40, 114, 0},
Color{8, 124, 0},
Color{0, 118, 40},
Color{0, 102, 120},
Color{0, 0, 0},
Color{0, 0, 0},
Color{0, 0, 0},
Color{236, 238, 236}, // 20
Color{76, 154, 236},
Color{120, 124, 236},
Color{176, 98, 236},
Color{228, 84, 236},
Color{236, 88, 180},
Color{236, 106, 100},
Color{212, 136, 32},
Color{160, 170, 0},
Color{116, 196, 0},
Color{76, 208, 32},
Color{56, 204, 108},
Color{56, 180, 204},
Color{60, 60, 60},
Color{0, 0, 0},
Color{0, 0, 0},
Color{236, 238, 236}, // 30
Color{168, 204, 236},
Color{188, 188, 236},
Color{212, 178, 236},
Color{236, 174, 236},
Color{236, 174, 212},
Color{236, 180, 176},
Color{228, 196, 144},
Color{204, 210, 120},
Color{180, 222, 120},
Color{168, 226, 144},
Color{152, 226, 180},
Color{160, 214, 228},
Color{160, 162, 160},
Color{0, 0, 0},
Color{0, 0, 0},
};
static_assert(kPalette.size() == 64u);
const uint16_t kPpuCtrl = 0x2000;
const uint16_t kPpuMask = 0x2001;
const uint16_t kPpuStatus = 0x2002;
@@ -376,4 +455,8 @@ void Ppu::fetch() {
}
}
Color Ppu::get_color_from_palette_index(uint8_t index) const {
return kPalette[index % kPalette.size()];
}
} // namespace n_e_s::core