What’s more, large graphics files tend to be more difficult to work with than smaller ones as they take longer to load, save, and manipulate than their smaller counterparts. Even with today’s multi-gigabyte hard drives, storing them can consume a fair amount of disk space. When designing arcade game graphics, you can easily wind up with dozens, if not hundreds, of such files. TABLE 3-1: Examples of Different Graphic Image File Sizes Screen ResolutionĪs you can see from Table 3-1, graphics files, particularly those at higher screen resolutions and color depths, can grow to be quite large. To see what I mean, let’s calculate the file size required by images saved at common screen resolutions and color depths by applying this simple formula: H x V x C File Size (KB) = -8 x 1024 H represents the number of horizontal pixels V represents the number of vertical pixels C represents the color depth Image Compression Graphic images can consume a lot of disk space, particularly when they’re saved at high screen resolutions and/or color depths. Image Compression and Graphic File Formats In this chapter, you’ll learn about: w Common image compression schemes w Essential graphic file formats w Important graphic file formats w File format suitability for arcade game graphics w Caveats for working with graphic files w Specific graphic file format recommendationsĬhapter 3 / Image Compression and Graphic File Formats
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