protected unsafe void ModifyR5G6B5(ModifyPixel callback)
{
int w = OriginalSize.Width;
int h = OriginalSize.Height;
IntPtr lockresult = Lock();
short* directacces = (short*)(void*)lockresult;
int pitch = Pitch / 2;
for (int y = 0; y < h; ++y)
for (int x = 0; x < w; ++x)
{
Color col;
if (callback(x, y, out col))
{
uint color = (uint)col.NativeColor;
directacces[x + y * pitch] = (short)(0x8000 | (color & 0x1F) | ((color >> 1) & 0x7FE0));
}
}
Unlock();
}
/// <summary>
/// Modifies the texture using a simple callback called on each pixel's modification.
/// </summary>
/// <param name="callback">Callback called for each pixel</param>
public void Modify(ModifyPixel callback)
{
switch (ColorFormat)
{
case ColorFormat.A1R5G5B5:
ModifyA1R5G5B5(callback);
break;
case ColorFormat.R5G6B5:
ModifyR5G6B5(callback);
break;
case ColorFormat.A8R8G8B8:
ModifyA8R8G8B8(callback);
break;
default:
throw new NotImplementedException(ColorFormat + " modifying options are not implemented. Consider using unsafe acess or Get/SetPixel instead.");
}
}
protected unsafe void ModifyA8R8G8B8(ModifyPixel callback)
{
int w = OriginalSize.Width;
int h = OriginalSize.Height;
IntPtr lockresult = Lock();
int* directacces = (int*)(void*)lockresult;
int pitch = Pitch / 4;
for (int y = 0; y < h; ++y)
for (int x = 0; x < w; ++x)
{
Color col;
if (callback(x, y, out col))
directacces[x + y * pitch] = col.NativeColor;
}
Unlock();
}
unsafe protected void ModifyA1R5G5B5(ModifyPixel callback)
{
int w = OriginalSize.Width;
int h = OriginalSize.Height;
IntPtr lockresult = Lock();
short* directacces = (short*)(void*)lockresult;
int pitch = Pitch / 2;
for (int y = 0; y < h; ++y)
for (int x = 0; x < w; ++x)
{
Color col;
if (callback(x, y, out col))
{
uint color = (uint)col.NativeColor;
directacces[x + y * pitch] = (short)((color & 0x80000000) >> 16 |
(color & 0x00F80000) >> 9 |
(color & 0x0000F800) >> 6 |
(color & 0x000000F8) >> 3);
}
}
Unlock();
}
