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GBHawk: only latch new window y value if greater then current line (fixes pokemon crystal artifact)

This commit is contained in:
alyosha-tas 2020-06-30 17:15:00 -04:00
parent 318c6a7994
commit 7aa1a497f7
3 changed files with 5 additions and 12 deletions
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2
src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/GBC_GB_PPU.cs
View File

@ -189,7 +189,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
break;
case 0xFF4A: // WY
window_y = value;
if (!window_started)
if (!window_started && (!LCDC.Bit(7) || (value > LY)))
{
window_y_latch = window_y;
window_y_tile = 0;

11
src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/GBC_PPU.cs
View File

@ -185,7 +185,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
break;
case 0xFF4A: // WY
window_y = value;
if (!window_started)
if (!window_started && (!LCDC.Bit(7) || (value > LY)))
{
window_y_latch = window_y;
window_y_tile = 0;
@ -732,14 +732,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
if (stat_line && !stat_line_old)
{
if (Core.REG_FFFF.Bit(1)) { Core.cpu.FlagI = true; }
Core.REG_FF0F |= 0x02;
//if (LY == 46)
//{
//Console.Write(VBL_INT + " " + LYC_INT + " " + HBL_INT + " " + OAM_INT + " " + LY + " ");
//Console.Write(render_offset + " " + scroll_x + " " + total_counter + " ");
//Console.WriteLine(STAT + " " + cycle + " " + Core.cpu.TotalExecutedCycles);
//}
Core.REG_FF0F |= 0x02;
}
stat_line_old = stat_line;

4
src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/GB_PPU.cs
View File

@ -120,8 +120,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
break;
case 0xFF4A: // WY
window_y = value;
if (!window_started)
{
if (!window_started && (!LCDC.Bit(7) || (value > LY)))
{
window_y_latch = window_y;
window_y_tile = 0;
window_y_tile_inc = 0;