<HTML> <HEAD> <TITLE>cgD3D9SetUniformMatrix</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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</PRE> <H1><A NAME="PARAMETERS"><A NAME="3">PARAMETERS </A></A></H1> <DL> <DT><STRONG>param </STRONG></DT> <DD> <P> The parameter whose values are to be set. It must be a uniform matrix parameter. </P> <DT><STRONG>matrix </STRONG></DT> <DD> <P> The matrix to set for the parameter. The upper-left portion of the matrix is extracted to fit the size of <B>param</B>. </P> </DD></DL> <H1><A NAME="RETURN_VALUES"><A NAME="4">RETURN VALUES </A></A></H1> <P> Returns <B>D3D_OK</B> if the function succeeds. </P> <P> Returns the D3D failure code if the function fails due to a D3D call. </P> <H1><A NAME="DESCRIPTION"><A NAME="5">DESCRIPTION </A></A></H1> <P> <B>cgD3D9SetUniformMatrix</B> sets the values of a uniform matrix parameter. </P> <H1><A NAME="EXAMPLES"><A NAME="6">EXAMPLES </A></A></H1> <PRE> // matrixParam is a CGparameter handle of type float3x2 // arrayParam is a CGparameter handle of type float4x4[2] ... // intialize the data for each parameter D3DXMATRIX matTexTransform( 0.5f, 0, 0, 0, 0, 0.5f, 0, 0, 0.5f, 0.5f, 0, 0, 0, 0, 0, 0 ); D3DXMATRIX matRot[2]; D3DXMatrixRotationAxis(&matRot[0], &D3DXVECTOR3(0,0,1), D3DX_PI*0.5f); D3DXMatrixRotationAxis(&matRot[1], &D3DXVECTOR3(0,1,0), D3DX_PI*0.5f); ... // only use the upper-left portion cgD3D9SetUniform(matrixParam, &matTexTransform); // you can use arrays, but you must set the entire array cgD3D9SetUniform(arrayParam, matRot); </PRE> <H1><A NAME="ERRORS"><A NAME="7">ERRORS </A></A></H1> <P> <B>cgD3D9Failed</B> is generated if a D3D function returns an error. </P> <P> <B>CGD3D9ERR_NODEVICE</B> is returned if a required D3D device is <B>NULL</B>. This usually occurs when an expanded interface routine is called but a D3D device has not been set with <A HREF="cgD3D9SetDevice.html">cgD3D9SetDevice</A>. </P> <P> <B>CGD3D9ERR_NOTLOADED</B> is returned if <B>program</B> was not loaded with the <A HREF="cgD3D9LoadProgram.html">cgD3D9LoadProgram</A>. </P> <P> <B>CGD3D9ERR_NOTMATRIX</B> is returned if <B>param</B> is not a matrix. </P> <P> <B>CGD3D9ERR_NOTUNIFORM</B> is returned if <B>param</B> is not a uniform parameter. </P> <P> <B>CGD3D9ERR_INVALIDPARAM</B> is returned if the parameter fails to set for any other reason. </P> <H1><A NAME="HISTORY"><A NAME="8">HISTORY </A></A></H1> <P> <B>cgD3D9SetUniformMatrix</B> was introduced in Cg 1.1. </P> <H1><A NAME="SEE_ALSO"><A NAME="9">SEE ALSO </A></A></H1> <P> <A HREF="cgD3D9SetUniform.html">cgD3D9SetUniform</A>, <A HREF="cgD3D9SetUniformMatrixArray.html">cgD3D9SetUniformMatrixArray</A>, <A HREF="cgD3D9TypeToSize.html">cgD3D9TypeToSize</A> </P> </BLOCKQUOTE> </BODY>