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how to use ambient light

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hellow, everyone !

I'm confused with the shader formula : 

finalColor = ambient + textureColor * diffuseLightColor ;

If there are no light in the scene, the finalColor is equal to ambient , then the object will be in single color.

I want to make the ambient as a darkness value, and the finalColor = ambient * textureColor .

Is the thought right ?

How to modify the code so that the code can adapt to both lighting environment and no-light environment ?

Edited by poigwym

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You was on the good road, never search complicated :

finalColor = (textureColor * ambientColor) + (textureColor * diffuseLightColor);

In other words, ambient is just a colorized diffuse texture added on the lighting or set as a start if multiple lights are added in the final color.

Edited by Alundra

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