private void SetupDefaultTexture()
{
if (default_texture == IntPtr.Zero)
{
if (DefaultSurface != null)
{
Cogl.PixelFormat fm;
if (DefaultSurface.Format == Cairo.Format.ARGB32)
{
fm = PixelFormat.Argb8888Pre;
}
else //if (DefaultSurface.Format == Cairo.Format.RGB24)
{
fm = PixelFormat.Rgb888;
}
unsafe {
default_texture = ClutterHelper.cogl_texture_new_from_data((uint)DefaultSurface.Width, (uint)DefaultSurface.Height, Cogl.TextureFlags.None,
fm, Cogl.PixelFormat.Any, (uint)DefaultSurface.Stride, DefaultSurface.DataPtr);
}
}
else
{
default_texture = Cogl.Texture.NewWithSize((uint)texture_size, (uint)texture_size,
Cogl.TextureFlags.None, Cogl.PixelFormat.Any);
}
}
}
private void SetupShadeTexture()
{
if (shade_texture == IntPtr.Zero)
{
Gdk.Pixbuf finalPb = new Gdk.Pixbuf(Colorspace.Rgb, true, 8, texture_size, texture_size);
unsafe {
int dst_rowstride = finalPb.Rowstride;
int dst_width = finalPb.Width;
int shd_width = (int)((float)dst_width * 0.25f);
int dst_height = finalPb.Height;
byte *dst_byte = (byte *)finalPb.Pixels;
byte *dst_base = dst_byte;
for (int j = 0; j < dst_height; j++)
{
dst_byte = ((byte *)dst_base) + j * dst_rowstride;
for (int i = 0; i < dst_width; i++)
{
*dst_byte++ = 0x00;
*dst_byte++ = 0x00;
*dst_byte++ = 0x00;
if (i > shd_width)
{
*dst_byte++ = (byte)(255 * (float)(i - shd_width) / (float)(dst_width - shd_width));
}
else
{
*dst_byte++ = 0x00;
}
}
}
shade_texture = ClutterHelper.cogl_texture_new_from_data((uint)finalPb.Width, (uint)finalPb.Height, Cogl.TextureFlags.None,
PixelFormat.Rgba8888, Cogl.PixelFormat.Any, (uint)finalPb.Rowstride, finalPb.Pixels);
}
}
}