fix(rendering): fix bloom not working

[Imitater967]

The bloom is not working because there is something wrong with high pass node.

BloomWorkFlow:

1. Blur scene color: Working fine
2. extract high color: Error : the intensity is usually not strong enough(less than 1)

//here should be a minus "-" instead of a multiply "*" because we want color higher than threshold to be collected
if(relativeLuminance * highPassThreshold > 1.0) {
        outColor.rgba = vec4(color.rgb, 1);
    } else {
        outColor.rgba = vec4(0);
    }

3. change the shader
4. finished

[jdrueckert]

Gave it a go and there's definitely an effect now when you enable bloom, but it's a bit too extreme 😅

Bloom disabled:

Bloom enabled:

[Imitater967]

I'll make this final, if scale up the intensity the torch would look nice though, but the snow will be too bright, I tried change Exposure node, but it just make whole graphic looks worse, the best approach might be add emission map for torch

[jdrueckert]

I would say that tests out fine. If we get complaints that something is too bright, we can tweak the numbers some more, but for now, this fixes the bloom so let's merge it