🛠 Vector Text Rendering and Anti-Aliasing on 16 Grayscale Levels
PaperDIY Assembly Kit (M5Stack) · avance · Améliorez la lisibilité des interfaces utilisateur en calculant dynamiquement les nuances de gris.
Hardware: PaperDIY, PC for font generation. 2. Problem: Standard bitmap fonts are blurry or pixelated on 960x540. 3. Solution: Use FreeType or vector rendering library. Rasterize glyphs at high res. 4. Algorithm: For each pixel, calculate glyph coverage (alpha). Map this alpha (0-255) to available 16 grayscale levels (0-15) via non-linear lookup table to compensate for screen gamma. 5. Implementation: Write directly to frame buffer using pointers on 8-bit parallel bus. Avoid dynamic allocations during rendering for real-time guarantee. 6. Verification: Display small text (8pt) and check edge sharpness. 7. Deep Dive: Implement sub-pixel rendering or Floyd-Steinberg dithering to simulate more nuances than the 16 physical levels, improving gradients.