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glgetpointerv(3g) [centos man page]

GLGETPOINTERV(3G)						   OpenGL Manual						 GLGETPOINTERV(3G)

NAME
glGetPointerv - return the address of the specified pointer C SPECIFICATION
void glGetPointerv(GLenum pname, GLvoid ** params); PARAMETERS
pname Specifies the array or buffer pointer to be returned. Symbolic constants GL_COLOR_ARRAY_POINTER, GL_EDGE_FLAG_ARRAY_POINTER, GL_FOG_COORD_ARRAY_POINTER, GL_FEEDBACK_BUFFER_POINTER, GL_INDEX_ARRAY_POINTER, GL_NORMAL_ARRAY_POINTER, GL_SECONDARY_COLOR_ARRAY_POINTER, GL_SELECTION_BUFFER_POINTER, GL_TEXTURE_COORD_ARRAY_POINTER, or GL_VERTEX_ARRAY_POINTER are accepted. params Returns the pointer value specified by pname. DESCRIPTION
glGetPointerv returns pointer information. pname is a symbolic constant indicating the pointer to be returned, and params is a pointer to a location in which to place the returned data. For all pname arguments except GL_FEEDBACK_BUFFER_POINTER and GL_SELECTION_BUFFER_POINTER, if a non-zero named buffer object was bound to the GL_ARRAY_BUFFER target (see glBindBuffer()) when the desired pointer was previously specified, the pointer returned is a byte offset into the buffer object's data store. Buffer objects are only available in OpenGL versions 1.5 and greater. NOTES
glGetPointerv is available only if the GL version is 1.1 or greater. GL_FOG_COORD_ARRAY_POINTER and GL_SECONDARY_COLOR_ARRAY_POINTER are available only if the GL version is 1.4 or greater. The pointers are all client-side state. The initial value for each pointer is 0. For OpenGL versions 1.3 and greater, or when the ARB_multitexture extension is supported, querying the GL_TEXTURE_COORD_ARRAY_POINTER returns the value for the active client texture unit. ERRORS
GL_INVALID_ENUM is generated if pname is not an accepted value. SEE ALSO
glBindBuffer(), glClientActiveTexture(), glColorPointer(), glEdgeFlagPointer(), glFogCoordPointer(), glFeedbackBuffer(), glGetVertexAttribPointerv(), glIndexPointer(), glNormalPointer(), glSecondaryColorPointer(), glSelectBuffer(), glTexCoordPointer(), glVertexAttribPointer(), glVertexPointer() COPYRIGHT
Copyright (C) 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/. AUTHORS
opengl.org opengl.org 06/10/2014 GLGETPOINTERV(3G)

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GLNORMALPOINTER(3G)						   OpenGL Manual					       GLNORMALPOINTER(3G)

NAME
glNormalPointer - define an array of normals C SPECIFICATION
void glNormalPointer(GLenum type, GLsizei stride, const GLvoid * pointer); PARAMETERS
type Specifies the data type of each coordinate in the array. Symbolic constants GL_BYTE, GL_SHORT, GL_INT, GL_FLOAT, and GL_DOUBLE are accepted. The initial value is GL_FLOAT. stride Specifies the byte offset between consecutive normals. If stride is 0, the normals are understood to be tightly packed in the array. The initial value is 0. pointer Specifies a pointer to the first coordinate of the first normal in the array. The initial value is 0. DESCRIPTION
glNormalPointer specifies the location and data format of an array of normals to use when rendering. type specifies the data type of each normal coordinate, and stride specifies the byte stride from one normal to the next, allowing vertices and attributes to be packed into a single array or stored in separate arrays. (Single-array storage may be more efficient on some implementations; see glInterleavedArrays().) If a non-zero named buffer object is bound to the GL_ARRAY_BUFFER target (see glBindBuffer()) while a normal array is specified, pointer is treated as a byte offset into the buffer object's data store. Also, the buffer object binding (GL_ARRAY_BUFFER_BINDING) is saved as normal vertex array client-side state (GL_NORMAL_ARRAY_BUFFER_BINDING). When a normal array is specified, type, stride, and pointer are saved as client-side state, in addition to the current vertex array buffer object binding. To enable and disable the normal array, call glEnableClientState() and glDisableClientState() with the argument GL_NORMAL_ARRAY. If enabled, the normal array is used when glDrawArrays(), glMultiDrawArrays(), glDrawElements(), glMultiDrawElements(), glDrawRangeElements(), or glArrayElement() is called. NOTES
glNormalPointer is available only if the GL version is 1.1 or greater. The normal array is initially disabled and isn't accessed when glArrayElement(), glDrawElements(), glDrawRangeElements(), glDrawArrays(), glMultiDrawArrays(), or glMultiDrawElements() is called. Execution of glNormalPointer is not allowed between glBegin() and the corresponding glEnd(), but an error may or may not be generated. If an error is not generated, the operation is undefined. glNormalPointer is typically implemented on the client side. Normal array parameters are client-side state and are therefore not saved or restored by glPushAttrib() and glPopAttrib(). Use glPushClientAttrib() and glPopClientAttrib() instead. ERRORS
GL_INVALID_ENUM is generated if type is not an accepted value. GL_INVALID_VALUE is generated if stride is negative. ASSOCIATED GETS
glIsEnabled() with argument GL_NORMAL_ARRAY glGet() with argument GL_NORMAL_ARRAY_TYPE glGet() with argument GL_NORMAL_ARRAY_STRIDE glGet() with argument GL_NORMAL_ARRAY_BUFFER_BINDING glGet() with argument GL_ARRAY_BUFFER_BINDING glGetPointerv() with argument GL_NORMAL_ARRAY_POINTER SEE ALSO
glArrayElement(), glBindBuffer(), glColorPointer(), glDisableClientState(), glDrawArrays(), glDrawElements(), glDrawRangeElements(), glEdgeFlagPointer(), glEnableClientState(), glFogCoordPointer(), glIndexPointer(), glInterleavedArrays(), glMultiDrawArrays(), glMultiDrawElements(), glNormal(), glPopClientAttrib(), glPushClientAttrib(), glSecondaryColorPointer(), glTexCoordPointer(), glVertexAttribPointer(), glVertexPointer() COPYRIGHT
Copyright (C) 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/. AUTHORS
opengl.org opengl.org 06/10/2014 GLNORMALPOINTER(3G)
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