The Essential Thinking Of Roughness And Anisotropy (4)

When making some work, we need to render some special effects, such as only showing the wireframe of the model. In this article, Fox Renderfarm, your best cloud rendering service provider, will show you how to use Arnold for Maya to render the mesh, show the model in wireframe or show the individual wireframe alone. Arnold renderer First, you need to modify the settings in the Arnold renderer, and then open the Hypershade to select the shader aiWireframe, the shader that implements the wireframe. aiWireframe Let's look at the properties of the aiWireframe shader, the detailed values: Edge Type is divided into Polygons, Triangles, Patches; Fill Color: This is the colour of the entity of the model itself. After testing, this node is connected to SurfaceMaterial for transparency and masking, but it has no effect, so, the node should be able to accept RGB information. About the LineColor the LineWidth, shown as below, Settings of aiWriteframe The setting of this material is used as backup content for later use. We use this node as transparency information, to link the rendered material transparency node. We add the basic Arnold shader aiStandarSurface to the model to be rendered, and we can choose to adjust the colour in the basic shader. The key step is to connect the aiWriteframe shader we made earlier to the Opacity node of the basic shader. aiWriteframe link transparent node Next, we need to remove the Opaque node from the basic attributes of the model. A model can easily adjust the Opaque node in Arnold. But if there are many models, it will waste a lot of energy and time to adjust each model in turn. In Maya, you can adjust multiple model attributes at the same time through the attribute bar. Remove Opaque in the attribute The method of batch adjustment of model attributes is in the AttributeSpreadSheet of GeneralEditors under windows. The detailed selection of the attributes of the model is to render the first AIOpaque in the Arnold window, and then click to enter 0. 0 is off and 1 is on here. Modify model properties in bulk Let's take a look at the test results. The picture on the left is the rendered reb colour effect, and the one on the right is the effect with channels. So, regarding the grid now that it can be displayed transparently, how to achieve a mask effect that blends transparency and opacity? First, use the same method to make the first shader, and then use Maya’s most primitive basic shader: surfacesShader, this can control the masking effect very well, we use the made aiWireframe to link the Out Color of the surface shader so that we can achieve the transparency effect of the mask. You can see the masked transparency effect below, Basically, this is how it is made. Of course, you can also use this method to make other effects. Hope to help you.

Fox Renderfarm is known as a powerful but affordable render farm in the CG industry. Fox Renderfarm supports most mainstream software, Renderers, and Plugins, including Maya and Arnold. This article is about the knowledge of ice cube material in the basic material related learning in the Arnold tutorial. I hope it can be helpful for your learning of Arnold. In all kinds of texture making, ice cubes are a special kind. The overall texture of the ice cube is transparent, and has high specularity and refraction, as well as a certain caustics. Although the ice cubes are smooth, fine particles can still be seen at a certain angle. These particles are actually some small white bubbles generated during the ice-making process. There are many ways to achieve this effect. Today we will share a method of making ice cubes. Production First create a block to serve as the main body of ice. Then create an Arnold base shader and modify some of the settings. Because the ice cube material is transparent. There is no color, so there is no surface color. In Diffuse, set Color to black. Increase the Weight value in Specular. Because the surface of ice has no roughness and is very smooth, you need to open Fresnel to simulate this effect. Set the refraction, the value of Weight also needs to be adjusted up, the value of IOR is set to 1.33, and then check Fresnel, also need to check Caustics. Now the basic texture of the ice cube has been set. Now you need to add a small bubble effect to the ice cube. First create an Arnold 3D texture material, give the model, the following dialog box appears, just close it. After jumping out of the Aibump3d1sg node, you just need to drag the created Arnold texture to the Surface Shader in Arnold of Aibump3d1sg, then the model will appear small bubbles of bump effect. Next, place the ice texture made in the Shader of Aibump3d1 in the texture. Next, you need to add a Stucco texture map to the Bump Map in the 3D node, and then change the Bump Height to 0.5. Now that the material part is complete, the rest needs to add an HDRI. Open the material editor, create an aiSky environment ball map in Arnold, and paste an HDR environment map in Color. Change the value of Intensity to 2. Some settings are required before rendering. Click the Background link in the Environment to create the aiSky texture that was just created, so that the lights in the scene are set up. The sampling value of Cameraca is increased to 5 (the higher the value, the slower the rendering speed). Refraction value is set to 4. Set the Refraction value to 4 in Ray depth. Create a sphere as an environment and check Visibe in Refiections in Render Stats. Then conduct a rendering test. Rendering In 3D texture mapping, Maya's own 3D texture mapping can achieve many different effects (turn off the highlighter and refraction of the shader, and the following effects appear, The highlight and refraction of the shader are turned on, rendering:

Nowadays, many people use 3D software to create their works, so the use of the renderer is essential. There are many popular renderers, including V-Ray, Octane, Arnold, Conona, RedShift. But for many new 3D artist, which renderer is the best? The principles of these renderers are basically the same, but the operation methods are somewhat different. Of course, the focus of each rendering is different. Let us take a look at it now. Basic introduction to the renderer: The work from the Runner in Evermotion 2017, rendered by V-Ray. V-Ray The V-Ray renderer focuses on interior design and outdoor design for 20 years. The biggest feature is that it is almost half of the building performance, and the latest 4.0 version of the various functions are also very perfect, many works can be fake. Disadvantages, perhaps because V-Ray has too many setting parameters, material adjustment and lighting performance is very difficult, not very friendly to novices! Aronld official show Arnold Arnold is very powerful. The physics-based ray tracing engine CPU renderer is the most stable! Of course, the CPU is not strong enough, the rendering speed is also anxious, especially the rendering of transparent objects such as glass, as well as its powerful node-like operation, so that novices love and hate it! Of course, as an attitude to study the renderer, Arnold is highly recommended to learn! RedShift Next, talk about RedShift, the GPU-based renderer, the most intuitive experience is that the real-time preview and rendering speed is fast, and has a powerful node system like Arnold. It is more suitable for artistic creation, especially for animation. As for the authenticity of the rendering effect, it takes a lot of time to practice and accumulate knowledge. Octane Octane is also a GPU-based renderer. First of all, its SSS and replacement functions are quite good. The speed is also very fast, the light is softer, and the rendering looks very comfortable. Similarly, if the slightly larger scene is solved by PL, the efficiency will drop, but the speed is not fast. There are also problems with dryness that can sometimes become one of the features of the work! PS: The current version of OC does not support A card, nor can it exclude lights. The work from the first place of Evermotion 2017, rendered by Corona. Conona is also a highly recommended renderer. It comes from V-Ray. It can be seen as a simplified version of V-Ray. LightMix lighting solves the trouble of late dimming. The material system will not have to worry about it by default. Very small and practical, quick to get started, of course, just out of the official version, it is said that next year will be a node system, while the animation is somewhat weak! If you do indoor and outdoor design, static frame rendering can be used, after all, it is best at the ray tracing rendering engine! In fact, the renderer is just a step in the work, we can choose different renderers according to different work content, find the best for you.