1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2<HTML> 3<HEAD> 4<META http-equiv="Content-Type" content="text/html; charset=windows-1252"> 5<META name="GENERATOR" content="Microsoft FrontPage 5.0"> 6<META http-equiv="Content-Style-Type" content="text/css"> 7<LINK rel="stylesheet" type="text/css" href="../../../CSS/revolution.css"> 8<TITLE>perf-fill</TITLE> 9</HEAD> 10<BODY> 11<H1 align="left">perf-fill</H1> 12 13<H2>Description</H2> 14<P><code>perf-fill</code> is designed to check the capacity limit of the Graphics Processor (GP) pixel fill rate and texture bandwidth. The demo renders a grid of textured cubes. The size of the grid is controlled with the C Stick. A texture is placed on each cube. The number displayed in the texture indicates the number of TEV stages currently enabled.</P> 15<P>A variety of statistics can be displayed; these include the fill rate, texture bandwidth, number of texels/pixel, and texture cache miss rate. The grid of cubes can be rotated to see the effect of Z-comparing before and after texture lookup. A green arrow points in the Z-sorting direction for the grid. Zoom in and out using the Y and A Buttons to see the effect of LOD. You can increase or decrease the scale of the cubes using the R and L Buttons. Use the X and B Buttons to control cache functionality as described below.</P> 16 17<H2>Coverage</H2> 18<P>N/A.</P> 19 20<H2>Using the Demo</H2> 21<P>End the test with START.</P> 22<P> <U><STRONG>Position Control</STRONG></U></P> 23<UL> 24 <LI> 25<P>The Control Stick moves the viewpoint around the cube grid.</P> 26 <LI> 27<P>The Y Button zooms in the viewpoint and the A Button zooms out the viewpoint.</P> 28</UL> 29<P> <U><STRONG>Grid Control</STRONG></U></P> 30<UL> 31 <LI> 32<P>The C Stick controls the number of cubes in the x and z directions.</P> 33 <LI> 34<P>The L Button decreases the scale of each cube and the R Button increases the scale of each cube.</P> 35</UL> 36<P> <U><STRONG>Mode Control</STRONG></U></P> 37<UL> 38<LI>The X Button switches between the parameters that can be modified with the B Button. Pressing the X Button will cycle through all the parameter options. 39</UL> 40<OL> 41<LI><strong>Number of TEV Stages:</strong>When this parameter is selected, the B Button increments the number of TEV stages from 1 through 8. Returns to 1 after 8. 42<LI><strong>The Statistics Display:</strong>When the B Button is pressed, more detailed statistics will be displayed on the screen, and then no statistics will be displayed. 43<LI><strong>Cube Animation:</strong>If the B Button is pressed, the animation stops. If the button is pressed again, the animation plays back. 44<LI><strong>Number of Cubes per Texture:</strong>If the B Button is pressed, the number of cubes per texture decreases. Texture 8 is used as the switching texture. Textures 0 through 7 indicate the number of TEV stages. Each time the button is pressed, the number of cubes per texture is divided by two, until every cube alternates textures. 45<LI><STRONG>The Texture Cache Algorithm:</STRONG>Use the B Button to toggle between round robin and map ID caching. In round robin mode, each call to <a href="../../../gx/Texture/GXLoadTexObj.html"><code>GXLoadTexObj</code></a> increments the cache number modulus the number of caches (8). (* 0 becomes 1, becomes 2 and so on until 7 becomes 0.) The map ID method loads the texture into the cache based on the TEV stage in which it is used. Therefore, texture 0 will be stored in cache 0, texture 1 will be stored in cache 1, and so on. 46<LI><strong>Texture Cache Invalidation Mode:</strong>The B Button toggles between invalidating the texture cache for each frame and invalidating the texture cache on each new texture load. 47</OL> 48 49<H2>Snapshot</H2> 50<P><IMG src="./images/perf-fill-0.jpg" alt="perf-fill-0.jpg (36426 bytes)" width="640" height="448"></P> 51<P><IMG src="./images/perf-fill-1.jpg" alt="perf-fill-1.jpg (40907 bytes)" width="640" height="448"></P> 52 53<H2>Required Data Files</H2> 54<P><CODE>$REVOLUTION_SDK_ROOT/dvddata/gxTests/tex-07.tpl</CODE></P> 55 56<H2>Revision History</H2> 57<P> 582006/03/01 Initial version.<br> 59</P> 60 61<hr><p>CONFIDENTIAL</p></body> 62</HTML>
