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586 B
586 B
Flip pixels after gl.readTexture
:
var flip = require('flip-pixels')
var w = gl.drawingBufferWidth;
var h = gl.drawingBufferHeight
var pixels = new Uint8Array(w * h * 4);
gl.readPixels(0, 0, w, h, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
flip(pixels, w, h)
Based on this question.
See also clip-pixels.