private Bitmap GetPattern(int addr, int paletteAddr)
{
Bitmap bmp = new Bitmap(8, 8);
for (int y = 0; y < 8; ++y)
{
for (int x = 0; x < 8; ++x)
{
int addr1 = addr + y;
int addr2 = addr + y + 8;
byte b1 = ppu.PatternTables[Ppu.PatternHigh(addr1)][Ppu.PatternLow(addr1)];
byte b2 = ppu.PatternTables[Ppu.PatternHigh(addr2)][Ppu.PatternLow(addr2)];
byte bit1 = (byte)((b1 >> (7 - x)) & 0x1);
byte bit2 = (byte)((b2 >> (7 - x)) & 0x1);
byte result = (byte)(bit2 << 1 | bit1);
/*byte intensity;
* if (result == 3)
* intensity = 255;
* else if (result == 2)
* intensity = 160;
* else if (result == 1)
* intensity = 80;
* else
* intensity = 0;
*
* if (result == 0)
* bmp.SetPixel(x, y, Color.FromArgb(0,0,0,0));
* else
* bmp.SetPixel(x, y, Color.FromArgb(intensity, intensity, intensity));*/
if (result == 0)
{
bmp.SetPixel(x, y, System.Drawing.Color.FromArgb(0, 0, 0, 0));
}
else
{
int paletteEntry = ppu.Read(paletteAddr + result) % 64; // todo: bits
bmp.SetPixel(x, y, System.Drawing.Color.FromArgb(0xFF << 24 | Palette[paletteEntry]));
}
}
}
return(bmp);
}
protected override void OnPaint(PaintEventArgs e)
{
Graphics g = e.Graphics;
g.Clear(Color.Black);
int x = 0, y = 0;
const int BlockSize = 13;
SolidBrush fntBrush = new SolidBrush(Color.White);
/*Font fnt = new Font("Courier New", 10);
* for (int addr = 0x2000; addr < 0x3000; addr += 0x0400)
* {
* g.DrawString(String.Format("${0:X4}", addr), fnt, fntBrush, 16*4 + 8*16, y * BlockSize);
* y++;
* for (int i = 0; i < 32 * 30; ++i)
* {
* g.DrawString(String.Format("{0:X2}", ppu.Read(addr+i)), fnt, fntBrush, 16*4 + 8*16 + x * BlockSize*2, y * BlockSize);
*
* x++;
* if (x == 32)
* {
* x = 0;
* y++;
* }
* }
* }*/
for (int addr = 0x2000; addr < 0x3000; addr += 0x0400)
{
for (int i = 0; i < 32 * 30; ++i)
{
//g.DrawString(String.Format("{0:X2}", ppu.Read(addr + i)), fnt, fntBrush, 16 * 4 + 8 * 16 + x * BlockSize * 2, y * BlockSize);
Bitmap bmp = GetPattern(0x1000 + ppu.Read(addr + i) * 16);
g.DrawImage(bmp, 16 * 4 + 8 * 16 + x * 8, y * 8);
x++;
if (x == 32)
{
x = 0;
y++;
}
}
}
int tx = 0;
int ty = 0;
for (int i = 0; i < 32; ++i)
{
byte palIdx = ppu.Palette[i];//;.Read(0x3f00 + i);
Color c = Color.FromArgb((int)(0xFF000000 | PpuOutput.Palette[palIdx]));
Rectangle r = new Rectangle(tx * 16, ty * 16, 16, 16);
g.FillRectangle(new SolidBrush(c), r);
tx++;
if (tx >= 4)
{
tx = 0;
ty++;
}
}
//int x=0,y=0;
x = 0; y = 0;
for (int addr = 0; addr < 0x2000; addr += 16)
{
Bitmap bmp = GetPattern(addr);
g.DrawImage(bmp, 16 * 4 + x * 8, y * 8);
x++;
if (x == 16)
{
x = 0;
y++;
}
}
}