[BUG: ShockwaveFilter] When canvas isn't a square , the wave is not a circle. about filters

[bigtimebuddy]

I don't know what you mean. Can you try explaining or showing?

[finscn]

The shape of shockwave is not always a circle.

Only When the canvas is a square , The shape of shockwave is circle.

[bigtimebuddy]

I believe that's intentional.

[finscn]

Why ?
in the real game, what ever the game resolution ( 4:3 or 16:9 ) , the shockwave should always be a circle.

[finscn]

@bigtimebuddy . in filter , I use this code for computing the distance of a texture-point and center :
(uCenter use viewport coord, the unit is pixel )

    vec2 center = uCenter.xy / filterArea.xy;
    vec2 dir = vec2(center - vTextureCoord);
    float dist = length(vec2(dir.x, dir.y * filterArea.y / filterArea.x));

[finscn]

done with #95