What's the use of photons in 3dsmax?

Photons are the light distribution of our rendering window in 3dmax, and the light in 3dmax is calculated by points. Rendering a photon map is to calculate the photon distribution in the scene and render it in the form of a picture. Photons make the rendered picture more effective. The more light is reflected, refracted and accepted, the more realistic and rich the rendered picture will be.

The purpose of rendering photon maps in 3dmax is to render larger pictures faster without affecting the rendering effect. The rendered photon map can enlarge the large image by 5 times (without affecting the rendering effect). In the calculation method of "light energy transfer" in illumination, every time we render a picture, the light energy calculation method will recalculate photons, which will take up a lot of time. However, we can draw a big picture after adjusting the lighting and mapping in the scene, but it takes a lot of time to render a big picture. When we render a big picture, we can first render a photon picture (generally 65438+ 0/5 of the size of the big picture) and save it, and then render the big picture.

When rendering photon maps, we usually set the scale of the rendered map. If you want to render a big picture of 3000*2250, you only need to render the photon picture of 1000*750. If the big picture is directly rendered, then the photon picture is also 3000*2500, and the image is three times larger but the time will be much longer than three times.

The purpose of rendering photon maps in 3dmax is to render large images faster and save time and resources. When rendering renderings with Yun Xuan, small photons can choose 1/2, 1/3, 1/4, 1/6, 1/8.