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Datamosh Shaders Wiki › Guides › Identifying Glitch Artifacts and Compression Lines

Identifying Glitch Artifacts and Compression Lines

Inspecting Blocky Pixel Jumps

Datamosh Shaders introduces deliberate display errors that can be distinguished from standard game performance issues:

  • Pixel Block Movement: The screen is divided into small square segments that randomly jump, shift, and pull visual data from incorrect screen coordinates.
  • Staggered Refreshing: Not all parts of the glitch clear at once. Each block updates on its own timer, creating an uneven spread of visual decay across your screen.

Spotting Edge Noise and Compression Lines

To verify that the compression effects are functioning properly, examine sharp environmental boundaries, such as the edge of a cliff against the sky or a structure's roofline:

1. Look along the edges of individual pixel blocks to spot artificial bright and dark border lines meant to mimic severe video compression.

2. Watch the borders of moving objects to observe shimmering visual noise.

If you see these compression lines, noise fringes, and asynchronous pixel updates occurring simultaneously, the shader is performing its intended broken video processing.