65 lines
1.7 KiB
Plaintext
65 lines
1.7 KiB
Plaintext
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'\" e
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'\"! eqn | mmdoc
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'\"macro stdmacro
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.ds Vn Version 1.2
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.ds Dt 24 September 1999
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.ds Re Release 1.2.1
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.ds Dp Jan 14 18:30
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.ds Dm 01 matrixmod
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.ds Xs 9532 4 matrixmode.gl
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.TH GLMATRIXMODE 3G
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.SH NAME
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.B "glMatrixMode
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\- specify which matrix is the current matrix
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.SH C SPECIFICATION
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void \f3glMatrixMode\fP(
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GLenum \fImode\fP )
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.nf
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.fi
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.SH PARAMETERS
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.TP \w'\f2mode\fP\ \ 'u
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\f2mode\fP
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Specifies which matrix stack is the target
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for subsequent matrix operations.
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Three values are accepted:
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\%\f3GL_MODELVIEW\fP,
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\%\f3GL_PROJECTION\fP, and
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\%\f3GL_TEXTURE\fP.
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The initial value is \%\f3GL_MODELVIEW\fP.
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.TE
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Additionally, if the \%\f3GL_ARB_imaging\fP extension is supported,
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\%\f3GL_COLOR\fP is also accepted.
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.SH DESCRIPTION
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\%\f3glMatrixMode\fP sets the current matrix mode.
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\f2mode\fP can assume one of four values:
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.TP 25
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\%\f3GL_MODELVIEW\fP
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Applies subsequent matrix operations to the modelview matrix stack.
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.TP
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\%\f3GL_PROJECTION\fP
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Applies subsequent matrix operations to the projection matrix stack.
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.TP
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\%\f3GL_TEXTURE\fP
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Applies subsequent matrix operations to the texture matrix stack.
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.TP
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\%\f3GL_COLOR\fP
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Applies subsequent matrix operations to the color matrix stack.
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.P
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To find out which matrix stack is currently the target of all matrix
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operations, call \%\f3glGet\fP with argument \%\f3GL_MATRIX_MODE\fP. The initial
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value is \%\f3GL_MODELVIEW\fP.
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.SH ERRORS
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\%\f3GL_INVALID_ENUM\fP is generated if \f2mode\fP is not an accepted value.
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.P
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\%\f3GL_INVALID_OPERATION\fP is generated if \%\f3glMatrixMode\fP
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is executed between the execution of \%\f3glBegin\fP
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and the corresponding execution of \%\f3glEnd\fP.
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.SH ASSOCIATED GETS
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\%\f3glGet\fP with argument \%\f3GL_MATRIX_MODE\fP
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.SH SEE ALSO
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\%\f3glLoadMatrix(3G)\fP,
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\%\f3glPushMatrix(3G)\fP
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