Shrinking Octagon

WebGL

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WebGL shaders fill an octagon with a cloud texture. The vertex shader determines color location. The fragment shader prepares color for display.

The animated octagon vertex shader processes circle coordinates from the current vertex coordinates. The Animated Spotlight fragment shader processes circle coordinates from the current texture coordinates. Compare the difference in granularity between the two shaders. The fragment shader processes more often with more detail.

Simple Shaders: Learn WebGL Book 4

Learn the basics of WebGL shader programming with Simple Shaders: Learn WebGL Book 4. This book covers seven projects with unique shaders, in detail, providing an overview of GLSL (OpenGL Shading Language), which is the shader language used for WebGL. See the following projects online Spotlight Across Text, Radiating Colors, Cube Vertex Colors, Color Filters, Zoom Shader, Spotted Balloon Bursts and Colors Fade. Most shaders activate as you swipe over the canvas. See various visual effects including color animation, zooming, color filters, a traveling spotlight and expanding mesh.

Simple Shaders explains how to prepare basic WebGL GLSL shaders. This new Kindle book includes detailed instruction and links to many interesting WebGL shader examples online. Learn to program WebGL shaders. Harness the power of the Graphics Processing Unit (GPU).

Simple Shaders: Learn WebGL Book 4


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