1. Ambient Lighting: This technique uses a combination of light sources to create a realistic and ambient lighting environment. For example, in a virtual reality experience, ambient lighting can be achieved by using a combination of directional and point lights. Directional lights can be used to create sunlight or moonlight, while point lights can be used to create a soft, glowing effect.
2. Global Illumination: This technique uses a combination of light sources to simulate the bounce of light off of surfaces. For example, in a virtual reality experience, global illumination can be achieved by using a combination of point and spot lights. Point lights can be used to create a soft, glowing effect, while spot lights can be used to simulate the bounce of light off of surfaces.
3. Ambient Occlusion: This technique uses a combination of light sources to simulate shadows and occlusion. For example, in a virtual reality experience, ambient occlusion can be achieved by using a combination of directional and point lights. Directional lights can be used to create a soft, ambient light, while point lights can be used to simulate shadows and occlusion.
4. Volumetric Lighting: This technique uses a combination of light sources to simulate the effect of light passing through fog or smoke. For example, in a virtual reality experience, volumetric lighting can be achieved by using a combination of directional and point lights. Directional lights can be used to create a soft, ambient light, while point lights can be used to simulate the effect of light passing through fog or smoke.