public void Render(RowIterator row, int x, int count, CoverageIterator covers, Color c)
{
byte dst = c.A;
row.Move(x);
for (int i = 0; i < count; i++)
{
int alpha = covers.Current * c.A;
uint src = row[i];
row[i] = (byte)((((dst - src) * alpha) + (src << 16)) >> 16);
covers.MoveNext();
}
}
public void Render(RowIterator row, int x, int count, CoverageIterator covers, Color c)
{
row.Move(x + x + x);
for (int i = 0; i < 3 * count; i += 3)
{
int alpha = covers.Current * c.A;
int b = row[i + 0];
int g = row[i + 1];
int r = row[i + 2];
row[i + 0] = (byte)((((c.B - b) * alpha) + (b << 16)) >> 16);
row[i + 1] = (byte)((((c.G - g) * alpha) + (g << 16)) >> 16);
row[i + 2] = (byte)((((c.R - r) * alpha) + (r << 16)) >> 16);
covers.MoveNext();
}
}
public void Render(RowIterator row, int x, int count, CoverageIterator covers, Color c)
{
row.Move(x << 1);
for (int i = 0; i < count << 1; i += 2)
{
ushort rgb = (ushort)(row[i + 0] | row[i + 1]);
int alpha = covers.Current * c.A;
int r = (rgb >> 7) & 0xF8;
int g = (rgb >> 2) & 0xF8;
int b = (rgb << 3) & 0xF8;
int v =
(((((c.R - r) * alpha) + (r << 16)) >> 9) & 0x7C00) |
(((((c.G - g) * alpha) + (g << 16)) >> 14) & 0x3E0) |
((((c.B - b) * alpha) + (b << 16)) >> 19);
row[i + 0] = (byte)(v >> 8);
row[i + 1] = (byte)(v & 0xFF);
covers.MoveNext();
}
}
