[Gzz-commits] gzz/Documentation/Manuscripts/Paper paper.tex

[Tuomas J. Lukka]

CVSROOT:        /cvsroot/gzz
Module name:    gzz
Changes by:     Tuomas J. Lukka <address@hidden>        02/11/29 07:19:43

Modified files:
        Documentation/Manuscripts/Paper: paper.tex 

Log message:
        More on conclusions

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/gzz/gzz/Documentation/Manuscripts/Paper/paper.tex.diff?tr1=1.98&tr2=1.99&r1=text&r2=text

Patches:
Index: gzz/Documentation/Manuscripts/Paper/paper.tex
diff -u gzz/Documentation/Manuscripts/Paper/paper.tex:1.98 
gzz/Documentation/Manuscripts/Paper/paper.tex:1.99
--- gzz/Documentation/Manuscripts/Paper/paper.tex:1.98  Fri Nov 29 07:10:18 2002
+++ gzz/Documentation/Manuscripts/Paper/paper.tex       Fri Nov 29 07:19:43 2002
@@ -852,37 +852,56 @@
 While the method is general and
 applicable whenever data has identity,
 it is at its best when the same data node can be reached through
-several ways, and fragments of nodes are seen. In such a case,
-it can enhance user's orientation and sense of location.
+several ways, and fragments of nodes are seen. 
+
+\subsection{Problems}
 
 Of course it can be argued, for example, that
 the backgrounds clutter the display
 visually, making the user interface more confusing,
-and reduce text readability..
+and reduce text readability.
 However, we have found that by tuning the color selection and the gamma
-correction of the display, all these potential problems can be avoided.
+correction of the display, all this can be avoided.
 It is important that the colors chosen are light and that the palettes
 have a relatively small range of colors.
 Also, text readability on the generated backgrounds depends 
 strongly on the text scale; making it easy for the user to zoom
 fluidly in and out helps.
 
-So far, we have concentrated mostly on low-end hardware, and
-have not even tapped the full potential of the NV25 architecture.
+Nonlinear regcomb leads to aliasing: .... modeling textures mathematically , 
...
+
+\subsection{Further work}
 
-We are working on implementing
-similar algorithms on ATI's extensions, due to their recent release
-of a Linux driver.
-The new graphics chips, ATI R300 and NVIDIA NV30 support
-a great deal more of procedural texturing and it will
-be interesting to apply the same criteria there.
 The algorithms can be further developed: simulating lighting and
 a rough surface could produce good results.
 
-ARB fragment program
-
 Usability
 
+\section{Hardware support}
+
+So far, we have concentrated mostly on low-end hardware, and
+have not even tapped the full potential of the NV25 architecture.
+Given that there are 8 register combiner stages and 4 texture units,
+as opposed to 2 and 2 on NV10, 
+using 2 passes as we currently do is too much; 
+it should be possible to obtain interesting textures with just one pass.
+
+The next generation graphics chips will support 
+a great deal more of procedural texturing and there the technological
+limitations will be less of a problem.
+
+We are working on implementing
+similar algorithms on ATI's extensions, due to their recent release
+of a Linux driver. However, we see the proprietary extensions only
+as an interim situation: the recently completed
+OpenGL ARB fragment program extension specification is a step
+in the direction of having a common API over different OpenGL cards.
+We do not use DirectX because it is restricted to one platform.
+
+% The new graphics chips, ATI R300 and NVIDIA NV30 support
+% a great deal more of procedural texturing and it will
+% be interesting to apply the same criteria there.
+
 % 
 % Each basis texture is repeating, 
 % but by choosing the texture coordinates
@@ -895,13 +914,10 @@
 % % XXX: why is that?
 
 % % XXX: define repeating unit
+
 In order to create more interesting backgrounds, it can also be useful
 to use repeating units for non-repeating backgrounds --- but use more than one,
 which are not rationally related.
-
-Nonlinear regcomb leads to aliasing: .... modeling textures mathematically , 
...
-
-2 passes on NV25 too much; should be possible with 1
 
 \section{MPEG Animation}
 [not to be included in final ms.]