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GlyphAtlas

CPU-rasterized ASCII atlas backed by a GPUTexture. Good for prototyping and deterministic tests; rebuilds when DPR changes.

Import​

import { GlyphAtlas } from "stratum-map";

Construction​

GlyphAtlas.create(device, dpr?)​

Allocates atlas texture and sampler; rasterizes a fixed ASCII grid on CPU.

Interface​

Implements IGlyphAtlas used by TextRenderer:

  • UV rectangles per glyph cell
  • Metrics for layout (GlyphMetrics)
  • destroy() to free GPU texture

Performance notes​

  • CPU cost on atlas rebuild — avoid toggling DPR-dependent paths in hot loops.
  • Texture size grows with cell count × resolution — keep atlas modest for mobile GPUs.

See also​