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slightly tweaked ppu rendering

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Lauchmelder 2021-10-30 23:33:20 +02:00
parent bcbcea5d15
commit e4c68c8b17
1 changed files with 8 additions and 2 deletions
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10
NES Emulator/ppu.c
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@ -236,10 +236,15 @@ int tickPPU(struct PPU* ppu)
switch (ppu->verticalPhase) switch (ppu->verticalPhase)
{ {
case PreRender: case PreRender:
break; {
if (ppu->x == 280)
ppu->ppuAddress.raw = 0x2000 + 0x0400 * ppu->ppuCtrl.nametable;
} break;
case Visible: case Visible:
{ {
if (!ppu->ppuMask.bgEnable)
break;
// Fetching // Fetching
switch (ppu->horizontalPhase) switch (ppu->horizontalPhase)
{ {
@ -269,7 +274,7 @@ int tickPPU(struct PPU* ppu)
case Attribute: case Attribute:
{ {
ppu->tileData.attribute = ppu->nameTables[ppu->ppuCtrl.nametable][0x3C0 + ((tileY >> 2) * 8) + (tileX >> 2)]; ppu->tileData.attribute = ppu->nameTables[ppu->ppuCtrl.nametable][0x3C0];
break; break;
} }
@ -282,6 +287,7 @@ int tickPPU(struct PPU* ppu)
case PatternHigh: case PatternHigh:
{ {
ppu->tileData.tile.hi = readCartridgePPU(ppu->bus->cartridge, 0x1000 * ppu->ppuCtrl.bgTile + (ppu->tileData.nametable * 16) + (ppu->y % 8) + 8); ppu->tileData.tile.hi = readCartridgePPU(ppu->bus->cartridge, 0x1000 * ppu->ppuCtrl.bgTile + (ppu->tileData.nametable * 16) + (ppu->y % 8) + 8);
ppu->ppuAddress.raw++;
break; break;
} }
} }