In the tessellation stage, a described model of an object is created, and the object is then converted to a set of polygons. The geometry stage includes transformation, lighting, and setup. The rendering stage, which is critical for 3D image quality, creates a two dimensional display from the polygons created in the geometry stage. The real world is composed of transparent, translucent, and opaque objects.
Alpha blending is a technique for adding transparency information for translucent objects.
It is implemented by rendering polygons through a stipple mask whose on-off density is proportional to the transparency of the object. The resultant color of a pixel is a combination of the foreground and background color. Typically, alpha has a normalized value of 0 to 1 for each color pixel. Atmospheric Effect Effects, such as fog and depth cueing, that improve the rendering of real-world environments. Bitmap A Bitmap is a pixel by pixel image.