Function glIndexPointer

  • glIndexPointer specifies the location and data format of an array of color indexes to use when rendering. type specifies the data type of each color index and stride specifies 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.

    If a non-zero named buffer object is bound to the GL_ARRAY_BUFFER target (see glBindBuffer) while a color index 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 color index vertex array client-side state (GL_INDEX_ARRAY_BUFFER_BINDING).

    When a color index 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 color index array, call glEnableClientState and glDisableClientState with the argument GL_INDEX_ARRAY. If enabled, the color index array is used when glDrawArrays, glMultiDrawArrays, glDrawElements, glMultiDrawElements, glDrawRangeElements, or glArrayElement is called.

    Parameters

    • type: number

      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: number

      Specifies the byte offset between consecutive color indexes. If stride is 0, the color indexes are understood to be tightly packed in the array. The initial value is 0.

    • pointer: void

      Specifies a pointer to the first index in the array. The initial value is 0.

    Returns void

    Summary

    define an array of color indexes

    See

    glIndexPointer

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