libsvgtiny gradients

Hello, I came across your library and am hoping to use it in a game of mine. The README says that linearGradient is supported, and while investigating it seems there's at least some code for it. However when I try to use it, like in this simple example: <svg> <defs> <linearGradient id="grad1" x1="0%" y1="0%" x2="100%" y2="0%"> <stop offset="0%" style="stop-color:rgb(255,255,0);stop-opacity:1" /> <stop offset="100%" style="stop-color:rgb(255,0,0);stop-opacity:1" /> </linearGradient> </defs> <ellipse cx="200" cy="70" rx="85" ry="55" fill="url(#grad1)" /> </svg> I get the following output from the test program: svgtiny_find_gradient: id "grad1" linear_gradient_stop_count 0 viewbox 0 0 1000 1000 fill none stroke none stroke-width 1 path 'M 285 70 C 285 100.376 246.944 125 200 125 C 153.056 125 115 100.376 115 70 C 115 39.6243 153.056 15 200 15 C 246.944 15 285 39.6243 285 70 Z ' It doesn't seem to be finding any gradient stops? I'm not really sure. Can anyone suggest if linearGradients are supported and if so how to make them work? Thanks! Trent