static void Process8BitIndexedRow(ImageLine imageLine, Chunks.PngChunkPLTE plte, Chunks.PngChunkTRNS trns, Color[] pixels)
{
#if DEBUG
UnityEngine.Assertions.Assert.IsNotNull(trns, "make sure this image contains no transparency data");
#endif
int row = imageLine.ImageRow;
ImageInfo imgInfo = imageLine.ImgInfo;
int numRows = imgInfo.Rows;
int numCols = imgInfo.Cols;
int bitDepth = imgInfo.BitDepth;
int channels = imgInfo.Channels;// int channels = 4;
float max = GetBitDepthMaxValue(bitDepth);
int[] paletteAlpha = trns.PaletteAlpha;
int numIndicesWithAlpha = paletteAlpha.Length;
if (imageLine.SampleType == ImageLine.ESampleType.BYTE)
{
byte[] scanline = imageLine.ScanlineB;
for (int col = 0; col < numCols; col++)
{
int index = scanline[col] & 0xFF;
RGB <int> rgb = plte.GetEntryRgb(index, col * channels);
RGBA <int> rgba = rgb.RGBA(index < numIndicesWithAlpha ? paletteAlpha[index] : 255);
pixels[IndexPngToTexture(row, col, numRows, numCols)] = RGBA.ToColor(rgba, max);
}
}
else
{
int[] scanline = imageLine.Scanline;
for (int col = 0; col < numCols; col++)
{
int index = scanline[col];
RGB <int> rgb = plte.GetEntryRgb(index, col * channels);
RGBA <int> rgba = rgb.RGBA(index < numIndicesWithAlpha ? paletteAlpha[index] : 255);
pixels[IndexPngToTexture(row, col, numRows, numCols)] = RGBA.ToColor(rgba, max);
}
}
}
