How would I blend RGBA texture using Blend Add in such fashion (r, g, b, a) + (r2, g2, b2, a2). All the blend modes I've tried don't directly sum the results. Even if I render a single fragment with 0.2, 0.2, 0.2, 0.2 values I get alpha and rgb value as 1 or more while I would expect those values to be at 0.2. I assume Blend One One, One One should just sum the values, but it doesn't - values always turn out to be higher. Can it be a texture precision issue(tried different ones same result) or something like that?