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In this tutorial we will show the procedure of making a grassy field in order to enhance realism in our exterior architectural visualizations.
With this technique you can create super realistic grass and lawn for your next exterior architectural rendering project. In addition we share our grass blade textures with you, so grab this free download!
The technique in this tutorial could be used also to generate similar scenes of any scattered content that needs to be spread over a certain area. As always our target is to imitate real life so we must pay attention to the subtle details of a real reference photo.
In the photo bellow some useful notes can be extracted:. Firstly we need to make the terrain where the grass will be scattered. We make a plane surface cm x cm with length and width segments, apply an Edit Poly modifier and we make some push and pull paint deformations.
This step will give some realistic bumps, make our ground less flat and capture more interesting shadows. It is obvious that this technique is followed not only in plane surfaces but in any kind of object standard primitives, extended primitives, compound objects etc. We place also a CoronaSun and a tree somewhere and play around until we find interesting shadows on the ground.
This is more or less an average height of human eye thus it will give us the proper point of view. Our intention is to make curved geometry for grass blades instead of flat planes so they can reflect light naturally. We start from a plane and by extruding edge by edge we shape the leaf. Apply some modifiers like Twist and Bend to create some leaf variety, in the next step we transform models to polys and finally attach all of them in one group in order to have a small cluster.
Finally we model some daisies. It is important, to place pivot of each leaf properly in the bottom edge. For our grass leaves we use for diffuse and translucency real leaf textures instead of flat colors though a simple UVW box map. In general it is recommended to use translucency and avoid refraction.
Usually the same texture for diffuse and translucency is used with the help of Color Correction map. If we have bright spots these are caused by sun being reflected on grass blades.
This is a physically correct phenomenon that you can be also found in real life for example when sea waves or snow reflecting sun. Tip: It is very helpful to use interactive rendering when tweaking parameters, materials and camera angles, thus we save rendering and working time. We like to share with you our texture for grass blade.
Feel free to use it for your private or commercial project and add it to your library. You see the texture is pretty easy, but will do the job perfectly as you see in the renderings.
We also would like to share the grass textures with you for free to show you in detail that there is no secret sauce and at least pretty simple! The grass textures look like this:. There are many commercial 3ds max plug-ins capable to provide remarkable results like Multiscatter , Forestpack Pro , Vrayscatter etc. It can be used to efficiently produce effects like grass, hair, forests and carpets.
Also CScatter can be used in combination with CProxy objects, a very useful feature when RAM limitations are slowing down our work, but we must be careful because creating large amounts of instanced objects may have impact on viewport performance thus it is advised to decrease the amount of displayed objects under Display rollout in CScatter parameters.
Tip: Now it is the time to make a quick render and see how the grass distributes and if we are happy with the density we are moving to the next step. To enhance our scene we scatter also some daises. In this way flowers are scattered in the white areas of the map. Please note that this step with the density map only works with the commercial version of Corona. But the Scatter function is available in the free version as well! Remember that realism comes with random variety so, the more different models placed randomly the best photorealistic result!
I really hope you liked this detailed tutorial about how to create realistic lawn or grass for your next architecture visualization job! Keep rendering! Please also check out our free grass PNG cutouts with transparent background download if you want to add some prerendered grass elements quickly in Photoshop!
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Skip to secondary menu Skip to content Skip to primary sidebar. There are five discrete steps a 3d artist must have in mind: Prepare the ground Model the blades Make clusters of grass and scatter them across the ground surface The technique in this tutorial could be used also to generate similar scenes of any scattered content that needs to be spread over a certain area.
Modeling the 3D Grass Blades and Flowers Our intention is to make curved geometry for grass blades instead of flat planes so they can reflect light naturally. The grass textures look like this: You can download the free grass textures for super realistic 3d grass renderings here: Grass-Blade-Textures-Free-Download.
Pick distribution object which is the ground surface. These are our clusters showing as boxes in order to keep RAM in low levels. Set Scatter count to and see the boxes filling the surface. We want fine rotation on X and Y axes 1 to 5 and a full rotation on Z axis Below are the final renders with and without daisies from different camera angles. Here the same images WITH the flowers � you see it looks even more natural!
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