83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
#include <gameboy/gameboy.hpp>
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#define VIDEO_CPP
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namespace GameBoy {
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Video video;
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unsigned Video::palette_dmg(unsigned color) const {
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unsigned R = monochrome[color][0] * 1023.0;
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unsigned G = monochrome[color][1] * 1023.0;
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unsigned B = monochrome[color][2] * 1023.0;
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return (R << 20) + (G << 10) + (B << 0);
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}
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unsigned Video::palette_sgb(unsigned color) const {
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unsigned R = (3 - color) * 341;
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unsigned G = (3 - color) * 341;
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unsigned B = (3 - color) * 341;
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return (R << 20) + (G << 10) + (B << 0);
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}
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unsigned Video::palette_cgb(unsigned color) const {
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unsigned r = (color >> 0) & 31;
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unsigned g = (color >> 5) & 31;
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unsigned b = (color >> 10) & 31;
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unsigned R = (r * 26 + g * 4 + b * 2);
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unsigned G = ( g * 24 + b * 8);
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unsigned B = (r * 6 + g * 4 + b * 22);
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R = min(960, R);
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G = min(960, G);
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B = min(960, B);
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return (R << 20) + (G << 10) + (B << 0);
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}
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void Video::generate(Format format) {
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if(system.dmg()) for(unsigned n = 0; n < 4; n++) palette[n] = palette_dmg(n);
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if(system.sgb()) for(unsigned n = 0; n < 4; n++) palette[n] = palette_sgb(n);
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if(system.cgb()) for(unsigned n = 0; n < (1 << 15); n++) palette[n] = palette_cgb(n);
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if(format == Format::RGB24) {
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for(unsigned n = 0; n < (1 << 15); n++) {
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unsigned color = palette[n];
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palette[n] = ((color >> 6) & 0xff0000) + ((color >> 4) & 0x00ff00) + ((color >> 2) & 0x0000ff);
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}
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}
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if(format == Format::RGB16) {
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for(unsigned n = 0; n < (1 << 15); n++) {
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unsigned color = palette[n];
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palette[n] = ((color >> 14) & 0xf800) + ((color >> 9) & 0x07e0) + ((color >> 5) & 0x001f);
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}
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}
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if(format == Format::RGB15) {
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for(unsigned n = 0; n < (1 << 15); n++) {
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unsigned color = palette[n];
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palette[n] = ((color >> 15) & 0x7c00) + ((color >> 10) & 0x03e0) + ((color >> 5) & 0x001f);
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}
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}
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}
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Video::Video() {
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palette = new unsigned[1 << 15];
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}
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Video::~Video() {
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delete[] palette;
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}
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const double Video::monochrome[4][3] = {
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{ 0.605, 0.734, 0.059 },
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{ 0.543, 0.672, 0.059 },
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{ 0.188, 0.383, 0.188 },
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{ 0.059, 0.219, 0.059 },
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};
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}
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