webgl support?

[stylehuan]

How do I start WebGL

[bitbof]

This site has some infos https://get.webgl.org/

[stylehuan]

Sorry, what I meant to say is how to render in Klecks using WebGL

[bitbof]

Klecks does some WebGL drawing through glfx.js. You can see its usage in filters, e.g. src/app/script/klecks/filters/filter-to-alpha.ts

let glCanvas = getSharedFx(); // get the glfx canvas (uses webgl)
let texture = glCanvas.texture(context.canvas); // turn current layer into a webgl texture
glCanvas.draw(texture).toAlpha(sourceId === 'inverted-luminance', selectedRgbaObj).update(); // apply toAlpha operation
// draw result back on layer
context.clearRect(0, 0, context.canvas.width, context.canvas.height);
context.drawImage(glCanvas, 0, 0);
texture.destroy(); // cleanup

Glfx code lives in src/app/script-vendor/glfx.ts.

Atm, everything outside of filters is done via CanvasRenderingContext2D.