Function mupdf_sys::fz_process_shade

pub unsafe extern "C" fn fz_process_shade(
    ctx: *mut fz_context,
    shade: *mut fz_shade,
    ctm: fz_matrix,
    scissor: fz_rect,
    prepare: fz_shade_prepare_fn,
    process: fz_shade_process_fn,
    process_arg: *mut c_void
)

Process a shade, using supplied callback functions. This decomposes the shading to a mesh (even ones that are not natively meshes, such as linear or radial shadings), and processes triangles from those meshes.

shade: The shade to process.

ctm: The transform to use

prepare: Callback function to ‘prepare’ each vertex. This function is passed an array of floats, and populates a fz_vertex structure.

process: This function is passed 3 pointers to vertex structures, and actually performs the processing (typically filling the area between the vertexes).

process_arg: An opaque argument passed through from caller to callback functions.