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fix rgb mode

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This commit is contained in:
Tobias Gunkel
2025-08-20 01:26:28 +02:00
parent 66c521fcc0
commit 0cc6a143f6
1 changed files with 4 additions and 3 deletions
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lib/peanut_gb.h
+4 -3
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@@ -1404,7 +1404,7 @@ void __gb_write(struct gb_s *gb, uint_fast16_t addr, uint8_t val)
gb->cgb.BGPalette[(gb->cgb.BGPaletteID & 0x3F)] = val;
fixPaletteTemp = (gb->cgb.BGPalette[(gb->cgb.BGPaletteID & 0x3E) + 1] << 8) + (gb->cgb.BGPalette[(gb->cgb.BGPaletteID & 0x3E)]);
#ifdef USE_BGR565 // BGR555 -> BGR565
gb->cgb.fixPalette[((gb->cgb.BGPaletteID & 0x3E) >> 1)] = ((fixPaletteTemp & 0x7C00) << 1) | ((fixPaletteTemp & 0x03E0) << 1) | (fixPaletteTemp & 0x001F); // swap Red and Blue
gb->cgb.fixPalette[((gb->cgb.BGPaletteID & 0x3E) >> 1)] = ((fixPaletteTemp & 0x7C00) << 1) | ((fixPaletteTemp & 0x03E0) << 1) | (fixPaletteTemp & 0x001F);
#else // RGB565
gb->cgb.fixPalette[((gb->cgb.BGPaletteID & 0x3E) >> 1)] = ((fixPaletteTemp & 0x7C00) >> 10) | ((fixPaletteTemp & 0x03E0) << 1) | ((fixPaletteTemp & 0x001F) << 11); // swap Red and Blue
#endif
@@ -1422,10 +1422,11 @@ void __gb_write(struct gb_s *gb, uint_fast16_t addr, uint8_t val)
gb->cgb.OAMPalette[(gb->cgb.OAMPaletteID & 0x3F)] = val;
fixPaletteTemp = (gb->cgb.OAMPalette[(gb->cgb.OAMPaletteID & 0x3E) + 1] << 8) + (gb->cgb.OAMPalette[(gb->cgb.OAMPaletteID & 0x3E)]);
#ifdef USE_BGR565 // BGR555 -> BGR565
gb->cgb.fixPalette[0x20 + ((gb->cgb.OAMPaletteID & 0x3E) >> 1)] = ((fixPaletteTemp & 0x7C00) << 1) | ((fixPaletteTemp & 0x03E0) << 1) | (fixPaletteTemp & 0x001F); // swap Red and Blue
gb->cgb.fixPalette[0x20 + ((gb->cgb.OAMPaletteID & 0x3E) >> 1)] = ((fixPaletteTemp & 0x7C00) << 1) | ((fixPaletteTemp & 0x03E0) << 1) | (fixPaletteTemp & 0x001F);
#else // RGB565
if(gb->cgb.OAMPaletteInc) gb->cgb.OAMPaletteID = (++gb->cgb.OAMPaletteID) & 0x3F;
gb->cgb.fixPalette[0x20 + ((gb->cgb.OAMPaletteID & 0x3E) >> 1)] = ((fixPaletteTemp & 0x7C00) >> 10) | ((fixPaletteTemp & 0x03E0) << 1) | ((fixPaletteTemp & 0x001F) << 11); // swap Red and Blue
#endif
if(gb->cgb.OAMPaletteInc) gb->cgb.OAMPaletteID = (++gb->cgb.OAMPaletteID) & 0x3F;
return;
/* CGB WRAM Bank*/