Skia's ColorMatrix vector is in the 0..255 range not 0..1

SkiaColorMatrixFilter::SkiaColorMatrixFilter(SkColorFilter* skFilter, float* matrix, float* vector):

        SkiaColorFilter(skFilter, kColorMatrix, true), mMatrix(matrix), mVector(vector) {

    // Skia uses the range [0..255] for the addition vector, but we need

    // the [0..1] range to apply the vector in GLSL

    for (int i = 0; i < 4; i++) {

        mVector[i] /= 255.0f;

    }

    // TODO: We should be smarter about this

    mBlend = true;

}