Snapshot.pushColorMatrix
void pushColorMatrix(graphene.matrix.Matrix colorMatrix, graphene.vec4.Vec4 colorOffset)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.Snapshot.pop.
Parameters
colorMatrix | the color matrix to use |
colorOffset | the color offset to use |