V-Ray for Revit – Quick Start: Interior Lighting

V-Ray for Revit – Quick Start: Interior Lighting


hi and welcome to the introduction to interior lighting quick start video for v-ray for Revit in this video we’ll go over lighting techniques for interior spaces okay let’s get started launch your version of Revit here we have 2017 loading open up the project file interior lighting dot RVT which you can download from this videos tutorial page online if you are using a version of Revit newer than 2015 Revit will automatically update the model in a few seconds for you this scene is a basic interior with some basic furniture windows and some interior lights we’ll start with the environment light first start an arty render using the sunlight that is already set up in the scene in Revit go to the v-ray tab and set the current view to the render view keep quality a draft and leave the resolution at 800 by 600 or adjust it as you prefer if you have a slower machine now leave artificial lights off and the Sun is already enabled and ready to go click here to select render with v-ray RT you’ll notice some of these lights appear to be on despite our turning off the artificial lights now these are actually self-illuminating materials and not exactly lights per se these materials are made to look like light sources and we’ll cover them later but sometimes Revit families are already set up with these self-illuminating or emissive materials already click stop in the progress window to halt the render click on the lamp and then click on edit type to replace the lamps material select the material lamp glass disabled this is included with the downloaded project for you then click OK and now let’s restart the arty render and you’ll see those materials are not self-illuminating anymore I’ll move this to the side of my desk top to make some room we see in the RT render that the Sun is not lighting the room very well yet while RT is still running I can select the render view and go to the render settings click on the Sun settings and here you can adjust the Sun to suit your needs change the date to June and click apply and RT shows how the Sun is creeping onto the porch a little bit now now change the time to 6:30 p.m. and you’ll see the Sun is coming into the space and gives it a nice sunset look to the room change the solar study from still to lighting for different types of controls on the Sun and click apply the new settings are based on azimuth and altitude to define the position and angle to the horizon of the Sun you can change these settings to see how the Sun position changes the lighting now change azimuth to 292 to get that sunlight right into the space play around with the angle a little bit to see how that affects the room setting the angle to a lower number like 15 gives you a nice sunset or sunrise look changing not just the angle but also the color of the light click on OK in both dialog windows click on the VA Sun button to access the settings change the Sun size from the default of 2 which is generally the most accurate setting to 6 and our shadows get much softer the higher you go the softer the shadows will get which may not be physically accurate but might be a nice effect close the Sun settings now let’s try switching from the Sun to a dome light RT updates to show the dome light as a solid color kind of making this look like a cloudy scene outside let’s enable use HDR image there is an HDR image that is included by default but you can use any HDR file that you would like now we use the default one and play with the rotation settings to change the position of the Sun in our dome to change the lighting in the room let’s set the Sun to twenty two degrees to get the light back in the room stop the Aarti render for now turn on artificial lights and close the dome light settings click no light here to disable the dome light for the time being so we can focus on the artificial lights in the room first we’ll add the self-illuminated materials back to the lampshades select the lamp click Edit type and on shade click here to select lamp glass as we had before this is an emissive material giving us light in the scene from the lamp shade click ok let’s go back to the v-ray tab and click render with v-ray RT to restart the artena render the lampshades are illuminating the scene but it’s rather dim so let’s adjust the exposure of our camera click on the camera settings icon here and adjust the exposure slider to bright interior with a value of about eight and the scene brightens up quite nicely close the camera settings let’s see a production render now stop the RT render click the render v-ray artis pull down arrow and select render with v-ray after a little while click stop when you’re happy with the draft quality we can see that these wall fixtures don’t appear to be on or doing much lighting v-ray for Revit looks at the settings in the Revit families to get their parameters when it lights the scene so maybe these lights in the scene aren’t bright enough click on that family and then click Edit type scroll down and you can see the initial intensity is only 10 lumens which is not at all bright click it and change it to 180 lumens and click OK now instead of re-rendering the whole scene let’s just render this region by clicking the region render button here and clicking and dragging a marquee window around this light go back to the v-ray tab and click render and it will update just that region and there’s our light now let’s look at emissive materials these self-illuminated materials on the lampshade and on these can lights to makes them look as if they’re turned on so let’s work on the light here as you can see it’s a different color than the rest of the light in the room with emissive materials by default they don’t allow other lights to go through that surface the warm light we have inside this lamp is only coming out of the top and the bottom of the openings in the lampshade model as you can see on the wall the cooler colored light here on the wall is coming directly from that emissive material itself and not the light inside the lamp using a v-ray material however we can allow that light to pass through the material if you need go to the material browser and type in the word lamp to find it in the browser you’ll see lamp glass as one of the materials click the drop-down auto Jen and replace that with v-ray material that opens a file browser navigate to the emitter material dot VR m80 material that comes with the tutorial select it and click open to assign the material to the lampshade select a region around the lamp in the v-ray frame buffer or VfB and click render it only changes slightly it’s still only using the self illumination from the material here on the wall to let the light pass through the lampshade click in the material browser to expand the materials settings click on the Edit v-ray material button select the Advanced tab and click on the options section disable cast shadows to enable the light inside the lamp to go through the shade click on file menu and save the changes to the material and close the now rerender that region and you’ll see that the light inside is coming through and lighting the wall alongside the self illumination from the shades emissive material itself while this looks good the light is not physically accurate because of that emissive material on the lampshade but that’s easy to address by changing the lampshades material to be more like a real frosted glass as opposed to an emissive self-illuminated material in the material browser click on the lamp glass material drop down to set it back to auto gen and close the browser select the lamp object and click on edit type here in the type properties window click on the shades lamp glass material for the material browser window click on the appearance tab and turn off the self illumination checkbox and click OK click OK in the type properties window in the v-ray tab click on render to see the change which creates a more predictable accurate result for the light in the lamp with a frosted glass shade now let’s get the artificial lights to work alongside the environmental light turn off the render region in the VfB start an RT render again select the dome light to turn it back on RT updates and shows us this is way too bright one way to do this which is not physically accurate but still effective is to reduce the intensity of the dome light set it to 0.1 and the environment light is much less bright overall making the intensity down even further gives us a nighttime render with a little bit of environment light coming in from outside now stop the RT render change the quality to high and set the resolution to 1152 by 864 for a bigger nicer quality render click to render with v-ray to start the final rendering now the longer you allow it to render the cleaner the result becomes now will elapse a little time here as the render resolves to a nicer quality and there you go thank you for joining us for this introduction to lighting with v-ray for Revit quick start video [Music]


13 thoughts on “V-Ray for Revit – Quick Start: Interior Lighting

  1. I'm doing everything like in the tutorial. Vray behaves as if there were no artificial lights. Changeing exposure doesn't help, and the lights render normally on Revit's engine. I'm using Revit 2017.1

  2. Can you tell us what are your computer specs?

    Also what graphics card are you using to run RT?

    I am building a new computer and would like to match your speeds.

    Thanks

    Mr Revit

  3. Whenever I render a 3D parallel view the image comes out tiny, as if its just zoomed out or there is now cropping constraints – However it works fine on perspective camera views, any suggestions?

  4. hello,
    In a previous video I saw, the presenter said that the Vray controls are all grey when in a 3D view, but in this video the controls are not grey.
    Can someone please help with how to make the controls be clickable when in a #D view.
    Thank you in advance!!

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