Exercise 211


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Introduction:

In this exercise, you learn to adjust/use bump, transparency and displacement maps to enhance textures. You will work with imagery downloaded from the web as well as V-Ray for Rhino. If you have already taken Digital Tools I (Archi 135), you may wish to make your own materials using Photoshop.

Part 1:

Part 2a (Non Archi 135 Graduates):

  • Browse the web for existing materials. You should try www.vraymaterials.co.uk. Many of the materials available will download with a .mat file instead of a .vismat file. You will need to build your own material (.vismat) using the download’s diffuse, bump, displacement & transparency maps.
  • You should download at least 4 materials for this exercise (preferably without .vismat files)

Part 2b (Archi 135 Graduates):

  • Download your own photos of texture or select Creative Commons Licensed images (http://search.creativecommons.org/). You will need to pick two textures. One texture needs to have some transparency (a screen, mesh, or similar)
  • Follow Photoshop Tutorial 1.22 to create a tileable texture for each image selected above. If you are unhappy with the results, pick a new material/texture to work with.
  • Make sure to enhance the image as necessary (Try following Photoshop 1.2 – 1.5). I will demonstrate several of these techniques for students who have not already taken Archi 135.
  • Post your image to the course website. Place tags that describe the texture in the “Tiling Textures” box on the right. These should be descriptive so that people can find and use these textures at a later time.
  • Please also categorize your post as “Digital Tools For Architects II” & “Exercise 214”
  • Follow Photoshop Tutorial 1.21 [transparency maps] to create a transparency map for your selected image. Save this image to a Materials folder on your flash drive with “_transparency” appended to the file name.
    • Note: Black regions in this image are transparent, white regions are opaque. Grey is semi-transparent.
  • Next, with the same or a different material, follow Photoshop tutorial 1.20 to create a bump map for your image. Save this image to a Materials folder on your flash drive with “_bump” appended to the file name.
    • Note: Black regions in this image are stick up (out) slightly, white regions are flush with the surface. Grey ranges are in between.
  • Next, with the same or a different material, follow Photoshop tutorial 1.19 to create a displacement map for your image. Save this image to a Materials folder on your flash drive with “_disp” appended to the file name.
    • Note: Black regions in this image stick up (out), white regions are flush with the surface. Grey ranges are in between.
  • Repeat to create additional materials OR go back to Part 2a and download additional materials. You should have 4 total materials to assemble when moving to Part 3.
  • Pack each material (V-Ray 8.11) to save each material. Upload this material with the sample image as the featured image and post it to the course website. Make sure to use the “V-Ray Materials Box” (bottom of right column) to categorize your materials. You should have two different posts for two different materials.

Part 3:

  • In the Materials_Test.3dm file you opened in part 1, create a new material for each material downloaded/created.
  • Follow V-Ray tutorial 8.6 to create and assign a diffuse texture map to your new material. Apply this material to the sphere and cube in the sample scene.
  • Follow V-Ray tutorial 8.7 to add a transparency map to the material if appropriate.
  • Follow V-Ray tutorial 8.8 to add a bump map to the material if appropriate.
  • Finally, follow V-Ray tutorial 8.9 to add a displacement map to the material if appropriate.
  • Look up the IOR (Index of Refraction) for the material (via Google) and adjust on a new “Reflection Layer” if appropriate.
  • Render the “Render – Material Test” viewport (Saved View) with V-Ray and save the .jpg result.
  • In the V-Ray materials editor, right click on your material (created in step 14) and select “Pack Material.” Save the .zip file to your flash drive.
  • Repeat for 4 materials (either downloaded (Part 2a) or created (Part 2b). You should have 4 total materials.

Part 4:

  • Upload each .zip package of material to a separate post on the course website. You should categorize the material under the “V-Ray Materials” section on the right column. The title of your post should be the name of your material. Do not include your name in the title.
  • Upload your rendered image for each material (Step 20) and set it as the featured image for your post.
  • If you downloaded materials fro the web for this exercise, you MUST also post a link to where you downloaded the original material files that you used.
  • You can view all materials on the course website by visiting the V-Ray Material Library under the Resources menu.

Part 5

  • With any additional time, compose a scene of objects that use your new materials and render the result. Post this if you finish as another post.
  • You do not need to comment for this exercise.

Downloads: