webcam.jl

import VideoIO
using GLPlot, Reactive, GLAbstraction


camera 	= VideoIO.opencamera()
img 	= VideoIO.read(camera)

# Just for fun, lets apply a laplace filter:
kernel 	= [-1 -1 -1;
           -1  8 -1;
           -1 -1 -1]

#async=true, for REPL use. Then you don't have to call renderloop(window)
window 	= createdisplay(#=async=true =#) 
glimg 	= glplot(Texture(img, 3), kernel=kernel, filternorm=0.1f0)

#Get Gpu memory object
glimg2 	= glimg.uniforms[:image]

#Asynchronous updating with React:
lift(fpswhen(window.inputs[:open], 30.0)) do x
    VideoIO.read!(camera, img)
    update!(glimg2,  mapslices(reverse, img, 3)) # needs to be mirrored :(
end

renderloop(window)