I have this problem: I have a 3d scene and when I apply a texture to the floor the lighting gets darker. If I remove the texture the lights gets back to normal. I can't understand why because even the menu characters that are not affected by light get darker. It's weird because I only have this problem with some textures.
It seems like the darker the color of the texture is, the less light I have.
I tried to change glTexEnvf, I replaced GL_MODULATE and started to use GL_DECAL so the texture doesn't get affected by lights. It worked, the texture has its original color, but everything else gets white with no shapes (like a 3d object with lighting off)