24     , fShader(std::move(sh)) {  in MaskShaderEffect()
29             .modulateMaskShader(fShader, canvas->getTotalMatrix());  in onRender()
41     , fShader(std::move(shader)) {  in ShaderEffect()
42     if (fShader) {  in ShaderEffect()
43         this->observeInval(fShader);  in ShaderEffect()
48     if (fShader) {  in ~ShaderEffect()
49         this->unobserveInval(fShader);  in ~ShaderEffect()
54     if (fShader) {  in setShader()
55         this->unobserveInval(fShader);  in setShader()
58     fShader = std::move(sh);  in setShader()
60     if (fShader) {  in setShader()
61         this->observeInval(fShader);  in setShader()
65     if (fShader) {  in onRevalidate()
66         fShader->revalidate(ic, ctm);  in onRevalidate()
74             .modulateShader(fShader ? fShader->getShader() : nullptr, canvas->getTotalMatrix());  in onRender()
86     fShader = this->onRevalidateShader();  in onRevalidate()