Actually... after testing the color correction function inside RII again, I can't say I comprehend what's going on anymore.
Taking color correction off seems to make the image less bright... but color correction on makes it look equivalent to what it looks like rendered to a plain billboard outside RII. So, it makes me think that color correction is always "enabled" when rendering image to Billboard, or anything? RII becomes the only way to "turn it off" (this can't be right?). This doesn't seem to be cleared up by the tech note, but I'll do a slower read through again just in case I missed something. -GT On Tue, Dec 21, 2010 at 8:09 PM, George Toledo <gtole...@gmail.com> wrote: > > > On Tue, Dec 21, 2010 at 7:41 PM, Christopher Wright < > christopher_wri...@apple.com> wrote: > >> >> Color correction maps values from a source profile to a target profile. >> Whether you have 4 bits or 64 bits of precision, it doesn't matter; you'll >> just have more or less precision. >> >> http://developer.apple.com/library/mac/#technotes/tn/tn2035.html > > > Does this mean that when color correction is on, one is running the image > through colorsync? So, one could run through needless stages of color sync > (?). > > >> >> If Pixel Aligned is _NOT_ enabled, you'll also add GL filtering (unless >> Native Core Image rendering is enabled) if your position is not pixel >> aligned > > > This is what I was driving at about filtering; what happens when something > isn't aligned.... > > GL filtering? Is this literally "GL Filtering"? > > >> -- GL doesn't properly blend with respect to gamma, so you'll get >> brightness shifts (not color shifts that are characteristic with color >> mis-correction). The amount of this filtering is a function of how >> mis-aligned your billboard is. > > > Does this gamma blend problem happen when rendering to Sprite or GLSL and > grid as well (or, especially)? > > Thanks! > > > > -- > George Toledo > gtole...@gmail.com > www.georgetoledo.com > > The information contained in this E-mail and any attachments may be > confidential. > If you have received this E-mail in error, please notify us immediately by > telephone or return E-mail. > You should not use or disclose the contents of this E-mail or any of the > attachments for any purpose or to any persons. > > -- George Toledo gtole...@gmail.com www.georgetoledo.com The information contained in this E-mail and any attachments may be confidential. If you have received this E-mail in error, please notify us immediately by telephone or return E-mail. You should not use or disclose the contents of this E-mail or any of the attachments for any purpose or to any persons.
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