Transparent lighting materials-how to improve the rendering speed of Vray and how to solve the problem of slow VR rendering?

How does photoshop make light shine behind coarse cloth? . An effect like this. First copy the big luminous effect of this black background, and finally cover the small luminous effect with it, adjust the opacity, and then use the opaque eraser to deal with the details.

Glowing effect, select Filter-Rendering-Lighting Effect-Point Light Source.

How to improve the speed of Vray rendering and how to solve the problem of slow VR rendering? Methods to improve the rendering speed of Vray;

Model factor

Vray has a dense photon distribution in every corner of the model, and it will take a lot of time to calculate these photons. The more complex the model, the more corners and the longer the rendering time. If you can't avoid the appearance of complex models, you can adjust the camera angle to make such objects appear in the camera's field of vision as little as possible. Of course, it depends on whether the object is the subject to be expressed.

Material factor

Effect of reflection on velocity in Vraymtl materials

Reflection: The higher the color brightness value, the slower the speed and the stronger the reflection.

Gloss: The lower the value, the slower the speed and the more blurred the reflection effect.

Subdivision: The higher the value, the slower the speed and the finer the fuzzy particles.

Maximum depth: The more times, the slower the speed and the richer the reflection.

Effect of refraction on velocity in Vraymtl materials

Refraction: The higher the color brightness value, the slower the speed and the stronger the refraction.

Gloss: The lower the value, the slower the speed and the more blurred the refraction effect.

Subdivision: The higher the value, the slower the speed and the finer the fuzzy particles.

Maximum depth: The more times, the slower the speed and the richer the refraction.

Translucent: it is usually used to simulate "wax", "water" or "3S" materials. Enabling it will increase rendering time.

Influence of reflection on speed in virtual reality mapping

Reflection: The higher the channel intensity value, the stronger the reflection.

Gloss: The lower the value, the slower the speed and the more blurred the reflection effect.

Subdivision: The higher the value, the slower the speed and the finer the fuzzy particles.

Maximum depth: The more times, the slower the speed and the richer the reflection.

Influence of refraction on speed in virtual reality mapping

Reflection: The higher the channel intensity value, the stronger the refraction.

Gloss: The lower the value, the slower the speed and the more blurred the refraction effect.

Subdivision: The higher the value, the slower the speed and the finer the fuzzy particles.

Maximum depth: The more times, the slower the speed and the richer the refraction.

Lighting factor

The greater the light intensity, the slower the speed. This problem exists not only in the light intensity, but also in the secondary rebound intensity and skylight light intensity in Vray.

The subdivision in Vray also determines the speed. The higher the subdivision, the slower the speed, but the corresponding shadow effect is more delicate.

In addition to the above two factors, the number of lights will also affect the rendering speed. Under the same rendering settings, the more lights, the slower the rendering speed, which is why the rendering time of night scene is often longer than that of daytime.

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Vray rendering speed is slow, rendering is stuck, rendering crashes, and local hardware configuration is insufficient. If you want to speed up rendering, the best solution is to use Shadowcloud rendering, cloud batch rendering and batch results, and enjoy the extreme rendering speed brought by high-configuration, high-memory and high-performance servers, saving rendering time and improving work efficiency.

You can also use an all-in-one cloud solution, Zanqi Cloud Workstation.

Create a cloud production platform through Zanqi Cloud Workstation to realize authority management, process management, project process management and task information synchronization.

Upload materials through cloud workstation, software center, cloud disk and cloud rendering->; Make a seat on the cloud->; Design->; Rendering-> Comprehensively present the whole process.

Realize collaborative production in different places, provide safe storage services at the same time, transmit data efficiently and at high speed, and avoid data leakage.

How to shoot glass products? Teach you four lighting skills 1. Pure light background

Light background is characterized by strong reflective ability. You can hit direct light from the front (be careful not to hit the glass directly). Direct light will be reflected on a white background, and when it hits the glass, it will look very transparent.

If it is possible to use a transparent plexiglass static table, you can also fill the light behind the object, which will make the outline below the cup more obvious.

2. Pure black background

The dark background is characterized by almost no reflection. So you need to use a flash soft box to take photos from both sides, or from the top, and then put reflectors on both sides to outline the white outline of the top and both sides.

However, you may need to adjust the angle and direction of the light source several times to control the number of white edges to get the best shooting effect.

3. A gradient background with light in the middle and dark around it

The gradient background with bright middle and dark surroundings is similar to the pure light background in the light distribution method.

They are all a front main light source, plus an auxiliary light source in the downward and backward directions. The difference is that the pure light background needs the front scattering light source, the gradual background needs the spotlight light source, and the background is far away from the main body to form the central bright area.

By adjusting the distance from the front main light to the background, the brightness and "diffusion" range of the central highlight area can be changed, and the size of the gradient area can be controlled to achieve the desired shooting effect.

4. Staggered color background

An important technique in glassware photography is to add liquid to the cup. Glassware itself is colorless and transparent, and adding liquids of various colors can make the picture more colorful.

In addition, different liquid textures, such as clear water, turbid beer and fruit juice with a lot of suspended particles, can create a completely different atmosphere and can be tried more.

The method of alternating color background lighting needs the help of liquid. The specific method is to select a black non-reflective bottom plate, put two background papers with different colors away from the object, splice them together, center the spliced gap and illuminate them with light; At the same time, the transmitted light hits the glass from the back and shoots from the front.

The part of the cup filled with liquid plays the role of blocking the line of sight and covering the seam between the two background plates; In addition, the liquid is "dyed" in different colors by the background board, and the visual effect is quite strange.

About how to shoot glass products. Teach you four lighting skills, and the global Ivy Bian Xiao will share with you here. If you have a strong interest in the later stage of film and television, I hope this article can help you If you want to know more about camera skills, post-editing methods and materials, you can click on other articles on this site to learn.