Worked on enhancing glyph rendering reliability and pipeline robustness across the corretto-11 and corretto-8 repositories. Focused on refactoring the glyph rendering metrics by introducing the CGGlyphImages_GetGlyphMetrics function, which centralized the retrieval of bounding boxes and advances for glyphs. This approach improved code organization, reduced duplication, and laid the groundwork for future performance optimizations. Adjusted canvas sizing and memory allocation to better support glyphs with varying dimensions, resulting in more reliable rendering outcomes. Utilized C and Objective-C with Core Graphics and CoreText to implement these changes, emphasizing low-level graphics and macOS development throughout the feature work.