Explain Physically based rendering like I'm five
Okay, let me try to explain physically based rendering like you’re five.👶

Imagine you want to draw a picture of a shiny ball on a piece of paper.🎨 You might use a red crayon to color the ball and then use a white crayon to make a bright spot on the ball where the light is hitting it.✨

But what if you want to make your picture look more realistic?🤔 You might notice that the ball is not just red, but it also reflects some of the colors around it. For example, if there is a blue sky above the ball, you might see some blue on the top of the ball.🌎 And if there is a green grass below the ball, you might see some green on the bottom of the ball.🌱

You might also notice that the bright spot on the ball is not just white, but it also changes depending on how you look at it. For example, if you move your head to the left or right, the bright spot will move too.👀 And if you move closer or farther away from the ball, the bright spot will get bigger or smaller.🔎

Physically based rendering is a way of making pictures on a computer that tries to copy how things look in real life.💻 It uses math and science to figure out how light bounces off different materials and how our eyes see those materials.👁️
Can you instead explain this in layman's terms instead and not like I am a literal five year old?
Physically based rendering (PBR) is a way of creating realistic images in computer graphics. It works by simulating the way light interacts with objects in the real world. This includes things like how light is reflected, refracted, and absorbed by different materials.

PBR is different from traditional rendering techniques in that it doesn't rely on pre-made textures or shaders. Instead, it uses mathematical equations to calculate the way light interacts with each object in the scene. This allows for more realistic and detailed images, as well as greater control over the look of the scene.

PBR is becoming increasingly popular in the video game and film industries. It's also being used in other areas, such as architectural visualization and product design.

Here are some of the benefits of using PBR:

More realistic images: PBR simulates the way light interacts with objects in the real world, which results in more realistic images.
Greater control over the look of the scene: PBR allows artists to have more control over the look of the scene by adjusting the properties of the materials.
Increased flexibility: PBR is more flexible than traditional rendering techniques, as it doesn't rely on pre-made textures or shaders.
Improved performance: PBR can be implemented in real-time, making it suitable for use in video games and other applications where performance is important.