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diff --git a/talk/talk.tex b/talk/talk.tex
index 4115e17b195c4c10bfb3821ffb6aa27d13612a10..596376688a28f39bf9ffbca8c7a67caeb09a38b8 100644
--- a/talk/talk.tex
+++ b/talk/talk.tex
@@ -81,10 +81,45 @@
\url{https://issues.skia.org/issues/40043907}: Filled paths of width less than 1px defeat GPU anti-aliasing\\[5mm]
\onslide<2->{
- Chrome vs. Inkscape:
+ Chrome vs. Inkscape:\\[5mm]
\includegraphics[width=\linewidth]{chromevsinkscape.png}
}
\end{frame}
+\begin{frame}
+ \frametitle{But why?}
+
+ \begin{columns}
+ \begin{column}{0.4\textwidth}
+ \begin{itemize}[<+->]
+ \item Skia renders by tesselating 2D paths (turn into triangles)
+ \item Use 3D pipeline for rendering (rasterization of triangles)
+ \item MSAA for anti-aliasing
+ \item Thin paths can ``snake'' through the sample points
+ \item Use ``analytic anti-aliasing'' (compute exact overlap of path with pixel)
+ \item Difficult on GPU
+ \end{itemize}
+ \end{column}
+ \begin{column}{0.6\textwidth}
+ \only<1-2>{
+ \includegraphics[width=\linewidth]{tess.pdf}
+
+ \scriptsize{Source: \url{https://docs.rs/lyon_tessellation}}
+ }%
+ \only<3>{
+ \includegraphics[width=.8\linewidth]{anti_aliasing_rasterization_samples_filled.png}
+
+ \scriptsize{Source: \url{https://learnopengl.com/Advanced-OpenGL/Anti-Aliasing}}
+ }%
+ \only<4->{
+ \includegraphics[width=\linewidth]{strokemsaa.pdf}\\[5mm]
+ \includegraphics[width=\linewidth]{chromevsinkscape.png}
+ }
+ \end{column}
+ \end{columns}
+
+
+\end{frame}
+
\end{document}
\ No newline at end of file
diff --git a/talk/tess.pdf b/talk/tess.pdf
new file mode 100644
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diff --git a/talk/test.svg b/talk/test.svg
new file mode 100644
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