In this release, core stability has been improved with fixes to paint effect duplication and clipping logic. The CPU engine received performance and memory optimizations, including a fix for a DropShadow memory violation. Lottie features were updated to better align with the spec, and JPEG decoding, Web/WASM bundling, and cross-platform compatibility were also enhanced.

🔧 Core

• Ensured correct duplication of paint effects. (#3631)
• Fixed incorrect clipping logic in fast-track rendering paths.

🚀 Engines

• [cpu] Improved memory efficiency when handling stroke and fill operations.
• [cpu] Fine-tuned image composition performance.
• [cpu] Resolved memory violation in DropShadow. #3764
• [cpu] Enhanced to support scalable CLAA logic. #3307
• [cpu] Fixed a clipping issue. #3713

✨Lottie

• Fixed loop() expression behavior. #3652
• Aligned with Lottie spec: skipped time stretch when time remap is defined. #3591
• Corrected evaluation of the value property in Lottie expressions. #3693
• Stabilized GradientFill slot overrides. #3766

🖼️ Jpeg

• Fine-tuned jpg decoder with size and performance.
• Fixed MCU block offset handling. #3699

🌐 Web

• Reduced WASM bundle size by omitting default TTF font data when the TTF loader is disabled. #3481

🛠️ Portability

• Fixed compilation issues on Windows when building ThorVG as a subproject using static libraries.
• Corrected directory path parsing issues that prevented Lottie resources from loading properly on MSYS2. #3542

Full Changelog: v0.15.14...v0.15.15