glindexpointer(3g) [mojave man page]
GLINDEXPOINTER(3G) GLINDEXPOINTER(3G) NAME
glIndexPointer - define an array of color indexes C SPECIFICATION
void glIndexPointer( GLenum type, GLsizei stride, const GLvoid *pointer ) 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. pointer 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 pointer 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, glColorPointer, glDrawArrays, glDrawElements, glEdgeFlagPointer, glEnable, glGetPointerv, glInterleavedArrays, glNormalPointer, glPopClientAttrib, glPushClientAttrib, glTexCoordPointer, glVertexPointer GLINDEXPOINTER(3G)
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GLVERTEXPOINTER(3G) GLVERTEXPOINTER(3G) NAME
glVertexPointer - define an array of vertex data C SPECIFICATION
void glVertexPointer( GLint size, GLenum type, GLsizei stride, const GLvoid *pointer ) PARAMETERS
size Specifies the number of coordinates per vertex; must be 2, 3, or 4. The initial value is 4. type Specifies the data type of each coordinate in the array. Symbolic constants GL_SHORT, GL_INT, GL_FLOAT, and GL_DOUBLE are accepted. The initial value is GL_FLOAT. stride Specifies the byte offset between consecutive vertices. If stride is 0, the vertices 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 vertex in the array. The initial value is 0. DESCRIPTION
glVertexPointer specifies the location and data of an array of vertex coordinates to use when rendering. size specifies the number of coordinates per vertex and type the data type of the coordinates. stride specifies the byte stride from one vertex 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 vertex array is specified, size, type, stride, and pointer are saved as client-side state. To enable and disable the vertex array, call glEnableClientState and glDisableClientState with the argument GL_VERTEX_ARRAY. If enabled, the vertex 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
glVertexPointer is available only if the GL version is 1.1 or greater. The vertex array is initially disabled and isn't accessed when glArrayElement, glDrawElements or glDrawArrays is called. Execution of glVertexPointer is not allowed between the execution of glBegin and the corresponding execution of glEnd, but an error may or may not be generated. If no error is generated, the operation is undefined. glVertexPointer is typically implemented on the client side. Vertex 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_VALUE is generated if size is not 2, 3, or 4. GL_INVALID_ENUM is generated if type is is not an accepted value. GL_INVALID_VALUE is generated if stride is negative. ASSOCIATED GETS
glIsEnabled with argument GL_VERTEX_ARRAY glGet with argument GL_VERTEX_ARRAY_SIZE glGet with argument GL_VERTEX_ARRAY_TYPE glGet with argument GL_VERTEX_ARRAY_STRIDE glGetPointerv with argument GL_VERTEX_ARRAY_POINTER SEE ALSO
glArrayElement, glColorPointer, glDrawArrays, glDrawElements, glDrawRangeElements, glEdgeFlagPointer, glEnable, glGetPointerv, glIndexPointer, glInterleavedArrays, glNormalPointer, glPopClientAttrib, glPushClientAttrib, glTexCoordPointer GLVERTEXPOINTER(3G)