Swirl — 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.

Both shots twist into a spinning vortex at the center, then unwind onto the next

• Install: npm install gl-transitions
• Registry: gl-transitions · Framework: glsl · License: MIT
• Docs and preview: https://gl-transitions.com/editor/Swirl
• Source: https://github.com/gl-transitions/gl-transitions/blob/master/transitions/Swirl.glsl
• Example: https://skills.varg.ai/previews/lib-gl-transitions-swirl.mp4?v=167516 (Rendered by varg from the library’s own code (GL Transitions · rendered by varg))
• Time: Seek-safe. Time is an input, so frame N always renders the same. Drop it into a render as it is.
• Runs: local render, free
• Aspect: any

Prompt that renders it frame-exact

Add the "Swirl" transition from GL Transitions (by Sergey Kosarevsky, MIT; https://gl-transitions.com/editor/Swirl, GLSL source https://github.com/gl-transitions/gl-transitions/blob/master/transitions/Swirl.glsl) between two scenes of a playful or psychedelic edit: 1 s, ease-in-out. The twist peaks at the midpoint, so center that moment on a beat. Remotion: npm install gl-transitions @gl-transitions/remotion @remotion/transitions, then a <TransitionSeries.Transition> with presentation={glTransition({ name: "Swirl" })} and timing={linearTiming({ durationInFrames: 30, easing: Easing.inOut(Easing.cubic) })} (30 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) / 1, 0, 1) through the easing; never from requestAnimationFrame or a timer, so every frame renders the same. ffmpeg's xfade can't run GLSL. It has no parameters; slow it to 1.5 s for a hypnotic version.

Used in

• Beat-synced slideshow
• Music video
• Kinetic manifesto
• News broadcast package
• Photo memories
• Game trailer

More transitions

• Chromatic Aberration Wipe — npx hyperframes add chromatic-aberration-wipe
• Colorama Wipe — npx hyperframes add colorama-wipe
• Cross Warp Morph — npx hyperframes add cross-warp-morph
• Cut the Curve — npx hyperframes add cut-the-curve
• Directional Wipe — npx hyperframes add directional-wipe
• Domain Warp Dissolve — npx hyperframes add domain-warp-dissolve