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9<title>pix-a-comp</title>
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13
14<h1 align="left">pix-a-comp</h1>
15
16<h2>Description</h2>
17<P>This program shows the alpha-compare function on the Pixel Engine. The TV screen is divided into four subscreens. Each can display a different alpha-compare method.</P>
18
19<h2>Coverage</h2>
20<p>Alpha-compare function.</p>
21<TABLE border="1" cellpadding="3" cellspacing="0.1" width="640">
22  <tr>
23<TD width="30%" bgcolor="#C0C0C0"><em><strong>Functions</strong></em></TD>
24<TD width="25%" bgcolor="#C0C0C0"><em><strong>Parameters</strong></em></TD>
25<TD width="45%" bgcolor="#C0C0C0"><em><strong>Description</strong></em></TD>
26    </tr>
27  <tr>
28<TD width="30%" rowspan="5"><code><A href="../../../gx/Tev/GXSetAlphaCompare.html">GXSetAlphaCompare</A></code></TD>
29<TD width="25%"><SPAN class="argument">comp0</SPAN></TD>
30<TD width="45%"><SPAN>Can be changed interactively.</SPAN></TD>
31    </tr>
32  <tr>
33<TD width="25%"><SPAN class="argument">ref0</SPAN></TD>
34<TD width="45%"><SPAN>Can be changed interactively.</SPAN></TD>
35    </tr>
36  <tr>
37<TD width="25%"><SPAN class="argument">op</SPAN></TD>
38<TD width="45%"><SPAN>Can be changed interactively (on the actual hardware only). </SPAN></TD>
39    </tr>
40  <tr>
41<TD width="25%"><SPAN class="argument">comp1</SPAN></TD>
42<TD width="45%"><SPAN>Can be changed interactively (on the actual hardware only). </SPAN></TD>
43    </tr>
44  <tr>
45<TD width="25%"><SPAN class="argument">ref1</SPAN></TD>
46<TD width="45%"><SPAN>Can be changed interactively (on the actual hardware only). </SPAN></TD>
47    </tr>
48</TABLE>
49
50<h2>Using the Demo</h2>
51<P>The A Button toggles the catalog/zoom up mode.</P>
52<ul>
53<li>In catalog mode, the joystick moves the cursor to select the subscreen.</li>
54<li>In zoom up mode, the joystick moves the cursor to change alpha compare settings.</li>
55</ul>
56<p>PAUSE exits the test.</p>
57
58<h2>Snapshot</h2>
59<P>Alpha-compare mode of <CODE>NEVER</CODE>, <CODE>LESS</CODE>, <CODE>LESS OR EQUAL</CODE>, and <CODE>EQUAL</CODE>.</P>
60<P><IMG src="./images/pix-a-comp-1.gif" alt="pix-a-comp-1.gif (7081 bytes)" width="642" height="482"></p>
61
62<P>Alpha-compare mode of <CODE>NOT EQUAL</CODE>, <CODE>GREATER OR EQUAL</CODE>, <CODE>GREATER</CODE> and <CODE>ALWAYS</CODE>.</P>
63<P><IMG src="./images/pix-a-comp-2.gif" alt="pix-a-comp-2.gif (8548 bytes)" width="642" height="481"></p>
64
65<h2>Required Data Files</h2>
66<p>None.</p>
67
68<H2>Revision History</H2>
69<P>
702006/03/01 Initial version.<br>
71</P>
72
73<hr><p>CONFIDENTIAL</p></body>
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