array help Post: 302090673

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glindexpointer

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)

10 More Discussions You Might Find Interesting

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perl, put one array into many array when field is equal to sth

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