In this section, you'll learn how to create a custom shader that you can use in postprocessing. We'll create two different shaders. The first one will convert the current image into a grayscale image, and the second one will convert the image into an 8-bit image by reducing the number of colors that are available. Note that creating vertex and fragment shaders is a very broad subject. In this section, we only touch the surface of what can be done by these shaders and how they work. For more in-depth information, you can find the WebGL specification at http://www.khronos.org/webgl/. An additional good resource full of examples is Shadertoy at https://www.shadertoy.com/.
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You're reading from Learning Three.js - the JavaScript 3D Library for WebGL
Jos Dirksen has worked as a software developer and architect for almost two decades. He has a lot of experience in many technologies, ranging from backend technologies, such as Java and Scala, to frontend development using HTML5, CSS, JavaScript, and Typescript. Besides working with these technologies, Jos regularly speaks at conferences and likes to write about new and interesting technologies on his blog. He also likes to experiment with new technologies and see how they can best be used to create beautiful data visualizations.
Previously, Jos has worked in many different roles in the private and public sectors, ranging from private companies such as ING, ASML, Malmberg, and Philips to organizations in the public sector, such as the Department of Defense and the Port of Rotterdam.
Read more about Jos Dirksen
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Jos Dirksen has worked as a software developer and architect for almost two decades. He has a lot of experience in many technologies, ranging from backend technologies, such as Java and Scala, to frontend development using HTML5, CSS, JavaScript, and Typescript. Besides working with these technologies, Jos regularly speaks at conferences and likes to write about new and interesting technologies on his blog. He also likes to experiment with new technologies and see how they can best be used to create beautiful data visualizations.
Previously, Jos has worked in many different roles in the private and public sectors, ranging from private companies such as ING, ASML, Malmberg, and Philips to organizations in the public sector, such as the Department of Defense and the Port of Rotterdam.
Read more about Jos Dirksen