Text rendering by estimating signed distance

The document explains a Vulkan-based font renderer that avoids blurry scaling and rotation by estimating signed distances from vector outlines instead of relying on texture atlases. It details GLSL methods for computing signed distances to lines and quadratic Bézier curves, which form glyph shapes, enabling anti-aliasing through fragment shaders. The approach combines line and Bézier distances using min and max functions to correctly render complex glyph contours. Despite being slower than texture atlas methods, this technique achieves high performance and better visual fidelity when transforming text.