Can i just use only one light and only apply this light for my hero and don't apply for other models in my game scene?

cocos2d-x
1

Can i just use only one light and only apply this light for my hero and don’t apply for other models in my game scene?
I had tryed to set the lighting mask of other models as 0,but all of this models disappeared from the screen!

2

You could add an Ambient Light for the other models. If they receive no light at all, they will be black.

3

setting 0 as the mask ‘should’ use a non lit shader, not sure why is doesn’t work. What version of cocos2d-x are you using?

If you add an Ambient light as LIGHT0 and the hero light as LIGHT1

hero mask = (unsigned int)(-1)
other mask = (unsigned int)(-1) ^ LightFlag.LIGHT1

-1 = unsigned int wrapped backwards to max: all bits set true

hero mask will be lit by all lights
other mask will be lit by everything except LIGHT0

4

I am using ‘cocos2d-x 3.4 final’.
Maybe this is a bug? I’m not sure.

5

All 3.4 versions switch shaders in Sprite3D::draw()

 bool usingLight = false;
 for (const auto light : lights) {
     usingLight = ((unsigned int)light->getLightFlag() & _lightMask) > 0;
     if (usingLight)
         break;
 }
 if (usingLight != _shaderUsingLight)
     genGLProgramState(usingLight);

Try putting a break point in here in a simple scene - you hero and one other object. See if your masks are being set and resolved correctly.

6

Thanks!!!