Ok, so I was willing to let this slide when it was only replicable on one specific graphics card, but the issue persists on the new Intel Iris Pro. I just bought a 15-Inch retina macbook pro (one of the ones with both the Intel Iris Pro and the Nvidia GeForce 750m), and using gfxCardStatus to force Minecraft to run with one card or the other creates different results. The 750m does not experience this problem at all, while the Intel Iris Pro (and my old Intel HD Graphics 3000) does. I request you look at this again. Is it possible that calling a change to the anisotropic setting can reset the filtering type? Would another call to set the filtering type immediately after setting the anisotropic filtering fix the issue? While experimenting on my computer, I noticed that this issue was only affecting terrain and not mobs. How are they rendered differently that would cause them to have different filtering?
I've been experiencing this problem since I first tried using anisotropic filtering with Optifine. I am also using a mac with an Intel HD Graphics 3000 GPU. Is this problem isolated to this specific card (aka, do other mac users with a different integrated GPU have this issue)? Is this something that maybe LWJGL or Apple should be notified about?
I have tested this in vanilla minecraft without texture packs using the default launcher in both 1.6.2 and 13w37a. This is not a 3rd party issue. Please reconsider the status change and test it first.
I'd thought I'd respond (even though this seems inactive). I hunted through mcp to find some details on how the stats are calculated and I found how a foal's stats are created.
When determining an offspring's stats, it takes both parent's stats, generates random stats, then averages all three stats together (the mothers stats, the father's stats, and the random stats).
This has the unfortunate implication that breeding is more likely to create more average children than their parents. A parent's percentile in a stat is also the probability a child has better stats. If the parents are above average, it is more likely a child is weaker than their parents than better. If the parents are in the top 5% (~95% of horses are worse and ~5% are better), their child has only a 5% chance of being better than their parents.
I hope this helps.
These were both taken from the same computer with the same world and the same settings, just with the Nvidia GeForce 750m for one and the Intel Iris Pro for the other.