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8<TITLE>tex-lod</TITLE>
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11<H1 align="left">tex-lod</H1>
12
13<H2>Description</H2>
14<P>This program tests advanced LOD control mode of mipmapped texture such as LOD bias, edge-diagonal-LOD mode, bias clamping, and anisotropic filter. The screen is divided into four sections and it is possible to compare differences by setting parameters for the texture of each section.</P>
15<H2>Coverage</H2>
16<TABLE border="1" cellpadding="3" cellspacing="0.1" width="640">
17  <TBODY>
18    <TR>
19<TD width="30%" bgcolor="#C0C0C0"><EM><STRONG>Functions</STRONG></EM></TD>
20<TD width="25%" bgcolor="#C0C0C0"><EM><STRONG>Parameters</STRONG></EM></TD>
21<TD width="45%" bgcolor="#C0C0C0"><EM><STRONG>Description</STRONG></EM></TD>
22    </TR>
23    <TR>
24<TD width="30%" rowspan="5"><A href="../../../gx/Texture/GXInitTexObj.html"><CODE>GXInitTexObj</CODE></A></TD>
25<TD width="25%">Pointer to image data.</TD>
26<TD width="45%">Appropriate value.</TD>
27    </TR>
28    <TR>
29<TD width="25%">Width and height</TD>
30<TD width="45%">only power of 2 (depends on tpl file)</TD>
31    </TR>
32    <TR>
33<TD width="25%">format</TD>
34<TD width="45%">some formats (depends on tpl file)</TD>
35    </TR>
36    <TR>
37<TD width="25%">Wrap mode (s, t).</TD>
38<TD width="45%">one or more (depends on tpl file)</TD>
39    </TR>
40    <TR>
41<TD width="25%">Mipmap</TD>
42<TD width="45%">Always <FONT face="Courier New">GX_TRUE</FONT>.</TD>
43    </TR>
44    <TR>
45<TD width="30%" rowspan="8"><A href="../../../gx/Texture/GXInitTexObjLOD.html"><CODE><CODE>GXInitTexObjLOD</CODE></CODE></A></TD>
46<TD width="25%">minification filter</TD>
47<TD width="45%">Always <CODE>GX_LIN_MIP_LIN</CODE>.</TD>
48    </TR>
49    <TR>
50<TD width="25%">Magnification filter</TD>
51<TD width="45%">Always <CODE>GX_NEAR</CODE>, <CODE>GX_LINEAR</CODE>.</TD>
52    </TR>
53    <TR>
54<TD width="25%">Minimum LOD</TD>
55<TD width="45%">Always 0 (depends on tpl file).</TD>
56    </TR>
57    <TR>
58<TD width="25%">Max LOD</TD>
59<TD width="45%">Existing values (depends on tpl file).</TD>
60    </TR>
61    <TR>
62<TD width="25%">LOD bias</TD>
63<TD width="45%"><STRONG>Various values.</STRONG></TD>
64    </TR>
65    <TR>
66<TD width="25%">Bias clamp</TD>
67<TD width="45%"><STRONG><FONT face="Courier New">GX_TRUE</FONT> / <FONT face="Courier New">GX_FALSE</FONT></STRONG></TD>
68    </TR>
69    <TR>
70<TD width="25%">Edge LOD enable</TD>
71<TD width="45%"><STRONG><FONT face="Courier New">GX_TRUE</FONT> / <FONT face="Courier New">GX_FALSE</FONT></STRONG></TD>
72    </TR>
73    <TR>
74<TD width="25%">Anisotropic filter</TD>
75<TD width="45%"><CODE>GX_ANISO_1</CODE>, <CODE>GX_ANISO_2</CODE>, <CODE>GX_ANISO_4</CODE></TD>
76    </TR>
77    <TR>
78<TD width="30%"><A href="../../../gx/Texture/GXLoadTexObj.html"><CODE>GXLoadTexObj</CODE></A></TD>
79<TD width="25%">Destination texture name.</TD>
80<TD width="45%">Always <CODE>GX_TEXMAP0</CODE>.</TD>
81    </TR>
82    <TR>
83<TD width="30%" rowspan="2"><A href="../../../gx/Tev/GXSetTevOp.html"><CODE>GXSetTevOp</CODE></A></TD>
84<TD width="25%">TEV stage ID.</TD>
85<TD width="45%">Always <FONT face="Courier New">GX_TEVSTAGE0</FONT>.</TD>
86    </TR>
87    <TR>
88<TD width="25%">Operation mode</TD>
89<TD width="45%">Always <CODE>GX_REPLACE</CODE>.</TD>
90    </TR>
91  </TBODY>
92</TABLE>
93<H2>Using the Demo</H2>
94<P>START exits the demo.</P>
95<P>The Control Stick rotates the cube in the selected screen section.<br>The C Stick changes the scale of the cube in the selected screen section.</P>
96<P>X and Y Buttons move the cursor and select a section and a parameter to change.</P>
97<P>L and R Buttons change the value of the selected parameter.</P>
98<P>The A Button rotates or scales all cubes at the same time.</P>
99<P>The B Button changes the texture of all cubes.</P>
100<H2>Snapshot</H2>
101<P>Various LOD bias settings.</P>
102<P><IMG src="./images/tex-lod-0.jpg" alt="tex-lod-0.jpg (42351 bytes)" width="640" height="480"></P>
103<P>Edge-LOD / Anisotropic filter.</P>
104<P><IMG src="./images/tex-lod-1.jpg" alt="tex-lod-1.jpg (40663 bytes)" width="640" height="480"></P>
105<P>Bias clamp.</P>
106<P><IMG src="./images/tex-lod-2.jpg" alt="tex-lod-2.jpg (40607 bytes)" width="640" height="480"></P>
107<H2>Data Files Required</H2>
108<P><FONT face="Courier New">$REVOLUTION_SDK_ROOT/dvddata/gxTests/tex-01.tpl</FONT></P>
109<H2>Revision History</H2>
110<P>2006/03/01 Initial version.</P>
111<hr>
112<P>CONFIDENTIAL</p>
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