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glMatrixMode - specify which matrix is the current matrix
void
glMatrixMode( GLenum mode )
- mode
- Specifies which matrix stack is the target for subsequent
matrix operations. Three values are accepted: GL_MODELVIEW, GL_PROJECTION,
and GL_TEXTURE. The initial value is GL_MODELVIEW.
Additionally, if the
GL_ARB_imaging extension is supported, GL_COLOR is also accepted.
glMatrixMode
sets the current matrix mode. mode can assume one of four values:
- GL_MODELVIEW
- Applies subsequent matrix operations to the modelview matrix stack.
- GL_PROJECTION
- Applies subsequent matrix operations to the projection matrix stack.
- GL_TEXTURE
- Applies subsequent matrix operations to the texture matrix stack.
- GL_COLOR
- Applies subsequent matrix operations to the color matrix stack.
To find
out which matrix stack is currently the target of all matrix operations,
call glGet with argument GL_MATRIX_MODE. The initial value is GL_MODELVIEW.
GL_INVALID_ENUM is generated if mode is not an accepted value.
GL_INVALID_OPERATION
is generated if glMatrixMode is executed between the execution of glBegin
and the corresponding execution of glEnd.
glGet with argument
GL_MATRIX_MODE
glLoadMatrix(3G)
, glPushMatrix(3G)
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