Compute average luminance of current display.

[ENBSeries]

Don't think that you will notice performance drop on such math at all, because cycles with them required to see difference or very long code. But always pay attention to low performance math which is log, pow, normalize, /, sqrt, exp, dot and of course texture reading.

[kingeric1992]

uhh, sorry to bump this,
but can any confirmed ENB adaptation is log-avg? or is it already scaled with middle gray for postprocess??

[ENBSeries]

I've never said about log or middle gray. If you don't understand, the only thing left is math of pixel shader:

Code: Select all

float3 average;
float3 maximum;
float3 current=tex2D(sampler, uv);
for (i=0; i<pixelcount; i++)
{
    float3 temp=tex2D(sampler, offset[i] + uv);
    average+=temp;
    maximum=max(current, temp);
    pixelcount++;
}
average/=pixelcount;
result=lerp(average, maximum, AdaptationSensitivity);
result=max(result, AdaptationMin);
result=min(result, AdaptationMax);

[kingeric1992]

Cool, thanks for the quick reply.
good to know this kinds of stuff.

[number6]

Thanks for the help guys!
Helios Double Six (number 6?)

Two different people.