setFragmentShader method
Assigns the fragment shader used when this material is drawn.
Implementation
void setFragmentShader(gpu.Shader shader) {
_fragmentShader = shader;
_fragmentShaderName = null;
_noShadowFragmentShader = null;
_noShadowFragmentShaderName = null;
_noShadowRadianceCubeFragmentShader = null;
_noShadowRadianceCubeFragmentShaderName = null;
}