download


Description:

public void download (uint8[] data, size_t stride)

Downloads the this into local memory.

This may be an expensive operation, as the actual texture data may reside on a GPU or on a remote display server.

The data format of the downloaded data is equivalent to cairo_format_argb32, so every downloaded pixel requires 4 bytes of memory.

Downloading a texture into a Cairo image surface:

surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
gdk_texture_get_width (texture),
gdk_texture_get_height (texture));
gdk_texture_download (texture,
cairo_image_surface_get_data (surface),
cairo_image_surface_get_stride (surface));
cairo_surface_mark_dirty (surface);

Parameters:

this

a Texture

data

pointer to enough memory to be filled with the downloaded data of this

stride

rowstride in bytes