PolkaDotsCurtain — primitive for transitions (glsl)

For AI agents: find the right skill in one call — curl -s "https://skills.varg.ai/api/search?q=<what the person wants>" returns the matching use case and the best skills with install commands, as markdown (Russian works too). Full index: https://skills.varg.ai/llms.txt. Every page has a markdown twin: add .md to its path. Before generating anything, show the person the options on the use-case page.

The next shot appears through a grid of polka dots that grow until they cover the frame

Prompt that renders it frame-exact

Add the "PolkaDotsCurtain" transition from GL Transitions (by bobylito, MIT; https://gl-transitions.com/editor/PolkaDotsCurtain, GLSL source https://github.com/gl-transitions/gl-transitions/blob/master/transitions/PolkaDotsCurtain.glsl) between scenes of a playful, pop-styled edit: 0.9 s, ease-in-out. The dots grow from one corner across the frame. Remotion: npm install gl-transitions @gl-transitions/remotion @remotion/transitions, then a <TransitionSeries.Transition> with presentation={glTransition({ name: "PolkaDotsCurtain", params: { dots: 20.0, center: [0, 0] } })} and timing={linearTiming({ durationInFrames: 27, easing: Easing.inOut(Easing.cubic) })} (27 frames at 30 fps). HyperFrames: draw the GLSL on a full-frame WebGL canvas over the cut, with the outgoing and incoming frames as the from/to textures, and compute progress from the composition time, clamp((t − cutStart) / 0.9, 0, 1) through the easing; never from requestAnimationFrame or a timer, so every frame renders the same. ffmpeg's xfade can't run GLSL. dots (20) is the grid density and center (vec2(0, 0), bottom-left) where the dots start growing; vec2(0.5, 0.5) grows them from the middle.

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