glindexpointer(3g) [xfree86 man page]
GLINDEXPOINTER(3G) GLINDEXPOINTER(3G) NAME
glIndexPointer - define an array of color indexes C SPECIFICATION
void glIndexPointer( GLenum type, GLsizei stride, const GLvoid *ptr ) PARAMETERS
type Specifies the data type of each color index in the array. Symbolic constants GL_UNSIGNED_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 color indexes. If stride is 0 (the initial value), the color indexes are understood to be tightly packed in the array. The initial value is 0. ptr Specifies a pointer to the first index in the array. The initial value is 0. DESCRIPTION
glIndexPointer specifies the location and data of an array of color indexes to use when rendering. type specifies the data type of each color index and stride gives the byte stride from one color index 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.) type, stride, and ptr are saved as client-side state. The color index array is initially disabled. To enable and disable the array, call glEnableClientState and glDisableClientState with the argument GL_INDEX_ARRAY. If enabled, the color index array is used when glDrawArrays, glDrawElements or glArrayElement is called. Use glDrawArrays to construct a sequence of primitives (all of the same type) from prespecified vertex and vertex attribute arrays. Use glArrayElement to specify primitives by indexing vertices and vertex attributes and glDrawElements to construct a sequence of primitives by indexing vertices and vertex attributes. NOTES
glIndexPointer is available only if the GL version is 1.1 or greater. The color index array is initially disabled, and it isn't accessed when glArrayElement, glDrawElements, or glDrawArrays is called. Execution of glIndexPointer 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. glIndexPointer is typically implemented on the client side. Since the color index array parameters are client-side state, they are 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_INDEX_ARRAY glGet with argument GL_INDEX_ARRAY_TYPE glGet with argument GL_INDEX_ARRAY_STRIDE glGetPointerv with argument GL_INDEX_ARRAY_POINTER SEE ALSO
glArrayElement(3G), glColorPointer(3G), glDrawArrays(3G), glDrawElements(3G), glEdgeFlagPointer(3G), glEnable(3G), glGetPointerv(3G), glInterleavedArrays(3G), glNormalPointer(3G), glPopClientAttrib(3G), glPushClientAttrib(3G), glTexCoordPointer(3G), glVertexPointer(3G) GLINDEXPOINTER(3G)
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GLNORMALPOINTER(3G) GLNORMALPOINTER(3G) NAME
glNormalPointer - define an array of normals C SPECIFICATION
void glNormalPointer( GLenum type, GLsizei stride, const GLvoid *ptr ) 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 initial value-the normals are understood to be tightly packed in the array. The initial value is 0. ptr 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 of an array of normals to use when rendering. type specifies the data type of the normal coordinates and stride gives 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.) When a nor- mal array is specified, type, stride, and ptr are saved as client-side state. 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, glDrawElements, or glArrayElement is called. Use glDrawArrays to construct a sequence of primitives (all of the same type) from prespecified vertex and vertex attribute arrays. Use glArrayElement to specify primitives by indexing vertices and vertex attributes and glDrawElements to construct a sequence of primitives by indexing vertices and vertex attributes. 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, or glDrawArrays 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. Since the normal array parameters are client-side state, they are 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 glGetPointerv with argument GL_NORMAL_ARRAY_POINTER SEE ALSO
glArrayElement(3G), glColorPointer(3G), glDrawArrays(3G), glDrawElements(3G), glEdgeFlagPointer(3G), glEnable(3G), glGetPointerv(3G), glIndexPointer(3G), glInterleavedArrays(3G), glPopClientAttrib(3G), glPushClientAttrib(3G), glTexCoordPointer(3G), glVertexPointer(3G) GLNORMALPOINTER(3G)