picogl.backend.gl.wrappers.draw
===============================

.. py:module:: picogl.backend.gl.wrappers.draw

.. autoapi-nested-parse::

   A module for OpenGL draw operations using PicoGL-specific enumerations or raw gl constants.

   This module provides functions to issue OpenGL draw calls, including support for
   custom draw modes and index types. It simplifies the process of working with OpenGL by
   handling conversion between PicoGL enums and raw gl constants, as well as managing pointer
   data for indexed drawing.

   Functions:
   - gl_draw_arrays: Wrapper for glDrawArrays supporting PicoGL enums or raw gl constants.
   - gl_draw_elements: Wrapper for glDrawElements with support for custom index pointers or offsets.



Functions
---------

.. autoapisummary::

   picogl.backend.gl.wrappers.draw._gl_enum
   picogl.backend.gl.wrappers.draw._draw_pointer
   picogl.backend.gl.wrappers.draw.gl_draw_arrays
   picogl.backend.gl.wrappers.draw.gl_draw_elements


Module Contents
---------------

.. py:function:: _gl_enum(value: Any) -> Any

   gl enum


.. py:function:: _draw_pointer(pointer: Any | None, offset: int) -> Any

   draw pointer


.. py:function:: gl_draw_arrays(index_count: int, mode: picogl.backend.gl.enums.GLDrawMode | int, first: int = 0) -> None

   Issue ``glDrawArrays`` with PicoGL draw-mode enums or raw gl constants.


.. py:function:: gl_draw_elements(index_count: int, dtype: int | None = GLIndexType.UNSIGNED_INT, mode: picogl.backend.gl.enums.GLDrawMode | int | None = GLDrawMode.TRIANGLES, pointer: Any | None = None, offset: int = 0) -> None

   Issue ``glDrawElements``.

   *pointer* may be a client index array, ``None`` (EBO bound), or omitted to use *offset*.