Dynamic_cast class ofShader load

@pierre_tardif00 wrote:

Hi,

I’m trying to get a collection of ofShader working.

I have created a ShaderManager class, and ShaderHandler class, and I’m trying to do a dynamic_cast on class, but it throw an error: when loading a shader file, the app crashes:

ofApp.h :

#pragma once

#include "ofMain.h"

class ShaderManager{
    public :
    ShaderManager(){
        
    }
    void setup(){
        cout << "setup Manager" << endl;
    }
    virtual ~ShaderManager(){};
};

class ShaderHandler : ShaderManager {
    public :
    ShaderHandler(){
        
    }
    
    ofShader shader;
    
    void setup(){
        
        cout << "setup Handler" << endl;
        
        shader.load("shader.vert", "shader.frag");
    }
    ~ShaderHandler(){};
};


class ofApp : public ofBaseApp{
	public:
		void setup();
		void update();
		void draw();
    
    
    
    ShaderManager* sManager1;
    ShaderHandler* sManager2;
    
};

ofApp.cpp :

#include "ofApp.h"

void ofApp::setup(){
    sManager1->setup();
    
    ShaderHandler* sManager3 = dynamic_cast<ShaderHandler*>(sManager1);
    sManager3->setup();
};

void ofApp::update(){
};

void ofApp::draw(){
};

Log :

2019-03-18 14:31:57.479119+0000 dynamicCastingDebug[85706:15317883] [default] Unable to load Info.plist exceptions (eGPUOverrides)
2019-03-18 14:31:57.864544+0000 dynamicCastingDebug[85706:15317882] MessageTracer: Falling back to default whitelist
setup Manager
setup Handler
dynamicCastingDebug was compiled with optimization - stepping may behave oddly; variables may not be available.
(lldb) 

How can I get the cast from ShaderManager to ShaderHandler and load my shaders?

I’m on 10.0.0-patch, OSX 10.14.3.

Thks,

P

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