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adding Vector2 in Models and starting drawBgTile loop

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This commit is contained in:
Clément Le Bihan
2020-05-13 13:07:20 +02:00
parent 3e811db9cd
commit ffe1b8fc1b
5 changed files with 167 additions and 4 deletions
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sources/PPU/PPU.cpp
+26 -3
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@@ -5,9 +5,11 @@
#include <iostream>
#include <bitset>
#include "PPU.hpp"
#include "PPUUtils.hpp"
#include "../Exceptions/NotImplementedException.hpp"
#include "../Exceptions/InvalidAddress.hpp"
#include "../Ram/Ram.hpp"
#include "../Models/Vector2.hpp"
namespace ComSquare::PPU
{
@@ -421,15 +423,36 @@ namespace ComSquare::PPU
{
int nbCharactersHeight = (this->_registers._bgsc[bgNumber].tilemapVerticalMirroring) ? 64 : 32;
int nbCharactersWidth = (this->_registers._bgsc[bgNumber].tilemapHorizontalMirroring) ? 64 : 32;
uint16_t vramAddress = this->_registers._bgsc[bgNumber].tilemapAddress >> 8U;
uint16_t vramAddress = this->_registers._bgsc[bgNumber].tilemapAddress << 1U;
uint16_t tilemapValue;
for (int i = 0; i < nbCharactersHeight * nbCharactersWidth; i++) {
for (int j = 0; j < 0x800; j++) {
tilemapValue = this->vram->read(vramAddress);
vramAddress++;
tilemapValue = this->vram->read_internal(vramAddress);
tilemapValue += this->vram->read_internal(vramAddress + 1) << 8U;
vramAddress += 2;
}
}
}
uint16_t PPU::getGraphicVramAddress(int x, int y, int bg, int bpp)
{
uint16_t baseAddress = this->_registers._bgnba[bg > 2].raw;
int step = bpp * 8;
baseAddress = (bg % 2) ? baseAddress & 0xFU : (baseAddress & 0xFU) >> 4U;
baseAddress = baseAddress << 12U;
return baseAddress + (x * 16 * step) + (y * step);
}
void PPU::drawBgTile(uint16_t data, Vector2<int> pos, int bg, int bpp)
{
uint16_t graphicAddress;
union TileMapData tileData;
tileData.raw = data;
graphicAddress = this->getGraphicVramAddress(tileData.posX, tileData.posY, bg, bpp);
// loop on all pixels of the tile 8x8 6x16 16x8 8x16
}
}