Method

GtkSnapshotpush_color_matrix

Declaration [src] 

void
gtk_snapshot_push_color_matrix (
  GtkSnapshot* snapshot,
  const graphene_matrix_t* color_matrix,
  const graphene_vec4_t* color_offset
)

Description [src]

Modifies the colors of an image by applying an affine transformation in RGB space.

In particular, the colors will be transformed by applying

pixel = transpose(color_matrix) * pixel + color_offset

for every pixel. The transformation operates on unpremultiplied colors, with color components ordered R, G, B, A.

The image is recorded until the next call to gtk_snapshot_pop().

Parameters

color_matrix

Type: graphene_matrix_t

The color matrix to use.

The data is owned by the caller of the method.
color_offset

Type: graphene_vec4_t

The color offset to use.

The data is owned by the caller of the method.