#Vray for sketchup exterior rendering how to#

The Dome Light makes IBL much faster and easier to calculate as it doesn't require high GI settings for a good result. We will use a V-Ray Dome LightВ along with a high dynamic range image (.hdr)В to create Image Based Lighting. This part demonstrates another method of generating day time illumination. Once you adjust those two parameters, you can disable the Material OverrideВ to render one version of a day time illumination. The White Balance parameter allows us to adjust the white balance of the image to accommodate for the color of the illumination. Higher EV makes the image darker and vice versa. We are using the camera in its 'basic options' mode in which we only have one parameter - Exposure Value(EV)В to set the exposure of the image. This part of the workflow covers the usage of the V-Ray Physical CameraВ options to adjust the exposure and white balance of the image. We prefer using the Hosek et alВ method which we believe produces the most visually pleasing effect.ДЇinally, we discuss the Albedo options which control the color of the sky below the horizon and how this color is blended with the actual color of the sky (above the horizon).

The Sky ModelВ parameter allows us to choose between different methods for generating the Sky texture. The Size MultiplierВ parameter, though not actually physically accurate - the Sun has a constant size, allows us to control the softness of the shadows for artistic purposes. The intensity and colors of the sky will be physically accurate based on those settings. Setting up the geographical position of our scene allows us to create accurate day time illumination for any given date and hour of that day. The main point is that the illumination (color and intensity) depends on the Sun's position. This part demonstrates the basics of setting up a V-Ray Sun and Sky System. In our workflow, we enable it in each step where we adjust the illumination and then disable it in the end for the final render. It allows us to render the entire scene with a single diffuse material which speeds up the rendering. This option is useful when setting up the illumination of a scene in which materials are already present. This method saves memory by keeping only one instance of the geometry in the RAM When working with proxies it is better to make copies of one proxy rather than importing the same geometry multiple times with different v-ray proxies.

Per Area - guarantees equal density of the grass across faces with different areas.

Per Face - each face has the same number of strands, if the faces have different areas the density of the grass will vary.

We can choose between controlling the number of grass strands in two ways: The DistributionВ parameters allow us to control the density of the grass. The VarianceВ parameters allow us to introduce some randomness in the grass so it looks more natural - higher numbers mean greater variation from the values determined in the Basic Parameters. The Length, Thickness, BendВ and TaperВ parameters allows us to control the look of each individual strand. In this module, we use it to quickly setup some grass for the front lawn. The V-Ray fur is a procedurally generated geometry that can be used to simulate effects like fur, hair and grass. vrmesh file) or any platform that can export. The geometry can be exported from any platform that supports V-Ray (into a. V-Ray then loads the geometry during render times. The proxy allows us to store any geometry on the hard drive and load it to SketchUp without impacting the poly count and performance of SketchUp. We begin by setting up some trees and bushes using the V-Ray Proxy. Since vegetation is usually very high poly and SketchUp cannot handle that much geometry we use several V-Ray functionalities Th eВ main moduleВ begins with setting up some vegetation. These were made so that you can start at any one of these stages and follow the steps in the video to the end.

You can find scene files with the same names in the Lesson 2 folder. We use the VFB Lens Effects to further enhance the night time setupД®ach section is annotated in the video.

#Vray for sketchup exterior rendering how to#

We show how to setup night time illumination using the Dome Light and some of the lights covered in the Extra modulesВ of Lesson 01 We switch the illumination to image based lighting вЂ“ using a panoramic high dynamic range picture of an environment and V-Ray Dome Light to illuminate our scene Using the Physical camera option we adjust the exposure and white balance of the image We use the V-Ray Sun and Sky system to match the illumination at a specific place in the world at a given time and day of the year We use the Override Material function to speed up the lighting process Trees and grass require lots of polygons so we use V-Ray Proxy and V-Ray Fur to generate them efficiently