<HTML> <HEAD> <TITLE>tex1DARRAY</TITLE> <STYLE TYPE="text/css" MEDIA=screen> <!-- BODY { font-family: Arial,Helvetica; } BLOCKQUOTE { margin: 10pt; } H1,A { color: #336699; } /*** Top menu style ****/ .mmenuon { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #ff6600; font-size: 10pt; } .mmenuoff { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #ffffff; font-size: 10pt; } .cpyright { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #ffffff; font-size: xx-small; } .cpyrightText { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #ffffff; font-size: xx-small; } .sections { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #336699; font-size: 11pt; } .dsections { font-family: Arial,Helvetica; font-weight: bold; text-decoration: none; color: #336699; font-size: 12pt; } .slink { font-family: Arial,Helvetica; font-weight: normal; text-decoration: none; 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The value used to select the layer is passed immediatelly after the regular coordinates, if an extra coordinate is present it is used to perform a shadow comparison. </P> <DT><STRONG>dx </STRONG></DT> <DD> <P> Pre computed derivative along the x axis. </P> <DT><STRONG>dy </STRONG></DT> <DD> <P> Pre computed derivative along the y axis. </P> <DT><STRONG>texelOff </STRONG></DT> <DD> <P> Offset to be added to obtain the final texel. </P> </DD></DL> <H1><A NAME="DESCRIPTION"><A NAME="4">DESCRIPTION </A></A></H1> <P> Performs a texture lookup in sampler <I>samp</I> using coordinates <I>s</I>, the texture to be sampled is selected from the layer specified in the coordinates. Also may use the derivatives <I>dx</I> and <I>dy</I>, the lookup may involve a shadow comparison and use texel offset <I>texelOff</I> to compute the final texel. </P> <H1><A NAME="PROFILE_SUPPORT"><A NAME="5">PROFILE SUPPORT </A></A></H1> <P> <B>tex1DARRAY</B> is only supported in <A HREF="gp4.html">gp4</A> and newer profiles. </P> <H1><A NAME="SEE_ALSO"><A NAME="6">SEE ALSO </A></A></H1> <P> <A HREF="tex1DARRAYbias.html"><I>tex1DARRAYbias</I></A>, <A HREF="tex1DARRAYlod.html"><I>tex1DARRAYlod</I></A> </P> </BLOCKQUOTE> </BODY>