What is color? Essentially, colors are human perception of electromagnetic waves of certain wavelengths. We perceive color through 3 types of cone cells in the retina of our eye – the red, green and blue. Each one of these cells is sensitive to particular range of wavelengths associated with that color. All the colors that we […]

Why use OpenEXR? OpenEXR allows storage of arbitary channels in a single file. For example, you can store z depth, specular, diffuse and other channels in a single file, making asset management that much more streamlined. 32 bit vs 16 bit vs 8 bit. This refers to the number of bits to store the information […]

I am sure there are more comprehensive guide to Photoshop blend modes out there. However, below are the most common ones and a quick and dirty explanation on the practical (rather than technical) usage of each types.   Normal Blend the top layer with bottom layer Dissolve Replace  certain percentage of pixels with the top […]

Update Great news: With LW2015. using the same technique, you can now apply the clip map directly to the surface property. There is no need to create a separate object/layer anymore  and you can actually save it as a material preset.  Why I like this technique: You can use it with any grass texture Very […]

  Quick summary: strategies for dealing with radiosity You can set individual radiosity properties such as the Rays Per Evalution, Min and Max Pixel Spacing etc for each object. An effective strategy is to set a low radiosity setting as whole, identify problem areas and increase the radiosity setting only for objects associated with that […]