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[Gzz-commits] manuscripts/AniFont anifont.tex
From: |
Janne V. Kujala |
Subject: |
[Gzz-commits] manuscripts/AniFont anifont.tex |
Date: |
Fri, 31 Oct 2003 12:54:55 -0500 |
CVSROOT: /cvsroot/gzz
Module name: manuscripts
Branch:
Changes by: Janne V. Kujala <address@hidden> 03/10/31 12:54:55
Modified files:
AniFont : anifont.tex
Log message:
bullet points
CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/gzz/manuscripts/AniFont/anifont.tex.diff?tr1=1.26&tr2=1.27&r1=text&r2=text
Patches:
Index: manuscripts/AniFont/anifont.tex
diff -u manuscripts/AniFont/anifont.tex:1.26
manuscripts/AniFont/anifont.tex:1.27
--- manuscripts/AniFont/anifont.tex:1.26 Fri Oct 31 11:55:53 2003
+++ manuscripts/AniFont/anifont.tex Fri Oct 31 12:54:54 2003
@@ -248,14 +248,28 @@
are different, and it happens to be that \emph{in screen space}, anisotropic
filtering
of an anisotropic texture is always better than the isotropic filtering of
an isotropic texture. This is shown in detail in
Fig.~\ref{figstretchsquishwhyworks}.
-The trilinear filter footpring size depends strongly on subpixel position and
+The trilinear filter footprint size depends strongly on subpixel position and
can be quite large compared to the actual pixel, causing blurring.
When using the anisotropic filter, the footprint remains significantly smaller
in one direction regardless of subpixel shifting --- in the other direction,
it is similar.
-- analogous to supersampling
+- too large footprint --> blurry
+
+- too small footprint --> aliasing
+
+- aliasing worse than blurring
+ --> footprint made too large rather than too small (mipmap levels)
+
+- when texels are narrower in one direction, the granularity of the
+ pixel footprint will be smaller in that direction
+- thus, the footprint can better match the pixel in that direction
+
+- however, a larger number of narrow texels is needed to fill the
+ area of the pixel
+
+- analogous to supersampling
- downsides:
@@ -278,7 +292,6 @@
% Hard to assess quality if zoomed too much (if the pixels are clearly
% visible, the grid structure will obscure the actual image).
% Is this fig referred to?
-
}
\end{figure*}
- [Gzz-commits] manuscripts/AniFont anifont.tex, Janne V. Kujala, 2003/10/02
- [Gzz-commits] manuscripts/AniFont anifont.tex, Tuomas J. Lukka, 2003/10/14
- [Gzz-commits] manuscripts/AniFont anifont.tex, Janne V. Kujala, 2003/10/14
- [Gzz-commits] manuscripts/AniFont anifont.tex, Tuomas J. Lukka, 2003/10/23
- [Gzz-commits] manuscripts/AniFont anifont.tex, Tuomas J. Lukka, 2003/10/23
- [Gzz-commits] manuscripts/AniFont anifont.tex, Janne V. Kujala, 2003/10/31
- [Gzz-commits] manuscripts/AniFont anifont.tex,
Janne V. Kujala <=