@Override
public void freeFilterResources(GL2 gl) {
if (linkedProgram != 0) {
ShaderUtil.deleteShaderProgram(gl, linkedProgram);
linkedProgram = 0;
}
if (linkedShader != 0) {
ShaderUtil.deleteShader(gl, linkedShader);
linkedShader = 0;
}
}
@Override
public void allocateFilterResources(GL2 gl) {
OptionalInt shader = ShaderUtil.createFragmentShader(gl, createSource());
if (shader.isPresent()) {
linkedShader = shader.getAsInt();
OptionalInt program = ShaderUtil.createSingleShaderProgram(gl, linkedShader);
if (program.isPresent()) {
linkedProgram = program.getAsInt();
} else {
ShaderUtil.deleteShaderProgram(gl, linkedProgram);
linkedProgram = 0;
}
}
}