private unsafe void DrawBitmap(int *p, bool gammaCorrection, int layer, bool bkgrnd, int bgndColor, int borderXSize, int borderYSize, int line, int width, int height)
{
// Bitmap Controller is located at $AF:0100 and $AF:0108
int regAddr = MemoryMap.BITMAP_CONTROL_REGISTER_ADDR - MemoryMap.VICKY_BASE_ADDR + layer * 8;
byte reg = VICKY.ReadByte(regAddr);
if ((reg & 0x01) == 00)
{
return;
}
byte lutIndex = (byte)((reg >> 1) & 7); // 8 possible LUTs
int bitmapAddress = VICKY.ReadLong(regAddr + 1);
int xOffset = VICKY.ReadWord(regAddr + 4);
int yOffset = VICKY.ReadWord(regAddr + 6);
int colorVal = 0;
int offsetAddress = bitmapAddress + line * width;
int pixelOffset = line * STRIDE;
int *ptr = p + pixelOffset;
int col = borderXSize;
//byte pixVal = 0;
byte[] pixVals = new byte[width];
VRAM.CopyIntoBuffer(offsetAddress, pixVals, 0, width);
while (col < width - borderXSize)
{
//pixVal = VRAM.ReadByte(offsetAddress + col);
colorVal = pixVals[col] == 0 ? bgndColor : GetLUTValue(lutIndex, pixVals[col], gammaCorrection);
ptr[col++] = colorVal;
}
}
// Convert a Hex file to PGX
// Header is PGX,1,4 byte jump address
private void ConvertHexToPGXToolStripMenuItem_Click(object sender, EventArgs e)
{
OpenFileDialog dialog = new OpenFileDialog
{
Filter = "Hex Files|*.hex",
Title = "Select a Hex File",
CheckFileExists = true
};
if (dialog.ShowDialog() == DialogResult.OK)
{
MemoryRAM temporaryRAM = new MemoryRAM(0, 4 * 1024 * 1024);
HexFile.Load(temporaryRAM, dialog.FileName, 0, out int DataStartAddress, out int DataLength);
// write the file
string outputFileName = Path.ChangeExtension(dialog.FileName, "PGX");
byte[] buffer = new byte[DataLength];
temporaryRAM.CopyIntoBuffer(DataStartAddress, buffer, 0, DataLength);
using (BinaryWriter writer = new BinaryWriter(File.Open(outputFileName, FileMode.Create)))
{
// 8 byte header
writer.Write((byte)'P');
writer.Write((byte)'G');
writer.Write((byte)'X');
writer.Write((byte)1);
writer.Write(DataStartAddress);
writer.Write(buffer);
}
}
}
public static byte[] LoadGammaCorrection(MemoryRAM VKY)
{
// Read the color lookup tables
int gammaAddress = MemoryMap.GAMMA_BASE_ADDR - MemoryMap.VICKY_BASE_ADDR;
//
byte[] result = new byte[3 * 256];
VKY.CopyIntoBuffer(gammaAddress, result, 0, 3 * 256);
return(result);
}
/**
* Save the content of memory to a binary file.
*/
private void SaveButton_Click(object sender, EventArgs e)
{
if (SaveDialog.ShowDialog() == DialogResult.OK)
{
FileStream outputFile = File.Create(SaveDialog.FileName);
MemoryRAM ram = (MemoryRAM)Memory;
byte[] buffer = new byte[ram.Length];
ram.CopyIntoBuffer(0, buffer, 0, ram.Length);
outputFile.Write(buffer, 0, buffer.Length);
outputFile.Flush();
outputFile.Close();
}
}