1991-2006 Silicon Graphics, Inc. gluLoadSamplingMatrices 3G gluLoadSamplingMatrices load NURBS sampling and culling matrices void gluLoadSamplingMatrices GLUnurbs* nurb const GLfloat * model const GLfloat * perspective const GLint * view nurb Specifies the NURBS object (created with gluNewNurbsRenderer). model Specifies a modelview matrix (as from a glGetFloatv call). perspective Specifies a projection matrix (as from a glGetFloatv call). view Specifies a viewport (as from a glGetIntegerv call). gluLoadSamplingMatrices uses model, perspective, and view to recompute the sampling and culling matrices stored in nurb. The sampling matrix determines how finely a NURBS curve or surface must be tessellated to satisfy the sampling tolerance (as determined by the GLU_SAMPLING_TOLERANCE property). The culling matrix is used in deciding if a NURBS curve or surface should be culled before rendering (when the GLU_CULLING property is turned on). gluLoadSamplingMatrices is necessary only if the GLU_AUTO_LOAD_MATRIX property is turned off (see gluNurbsProperty). Although it can be convenient to leave the GLU_AUTO_LOAD_MATRIX property turned on, there can be a performance penalty for doing so. (A round trip to the GL server is needed to fetch the current values of the modelview matrix, projection matrix, and viewport.) gluGetNurbsProperty, gluNewNurbsRenderer, gluNurbsProperty Copyright 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.