“Decomposition of 32 bpp into 16 bpp Textures with Alpha” by Yoda and Igarashi
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Entry Number: 33
Title:
- Decomposition of 32 bpp into 16 bpp Textures with Alpha
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Abstract:
In 2D game graphics, textures are packed into a single texture called a sprite sheet in order to achieve efficient rendering. The sprite sheet can be compressed to save memory by using various compression methods such as block-based compressions and 16 bpp (bits per pixel) tone reduction. These methods are not without some problems, though. Block-based compressions are GPU-dependent, and high-quality compressions such as ASTC [Nystad et al. 2012] are often unavailable on mobile devices. 16 bpp tone reduction–often used with dithering–can create undesirable noise when it is scaled up (Figure 1c).
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