/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */

/** \file
 * \ingroup pygen
 *
 * This file is the 'bgl' module which wraps OpenGL functions and constants,
 * allowing script writers to make OpenGL calls in their Python scripts.
 *
 * \note
 * This module is very similar to 'PyOpenGL' which could replace 'bgl' one day.
 */

#include <Python.h>

#include "BLI_utildefines.h"

#include "MEM_guardedalloc.h"

#include "GPU_context.hh"

#include "py_capi_utils.hh"

#include <epoxy/gl.h>

#include <algorithm>

#include "CLG_log.h"

/* Forward declare API's defines here. */
#define USE_BGL_DEPRECATED_API
#include "bgl.hh" /* Own include. */
#undef USE_BGL_DEPRECATED_API

static CLG_LogRef LOG = {"bgl"};

/* -------------------------------------------------------------------- */
/** \name Local utility defines for wrapping OpenGL
 * \{ */

#ifdef WITH_OPENGL_BACKEND
static void report_deprecated_call(const char *function_name)
{
  /* Only report first 10 deprecated calls. BGL is typically used inside an handler that is
   * triggered at refresh. */
  static int times = 0;
  while (times >= 10) {
    return;
  }
  char message[256];
  SNPRINTF(message,
           "'bgl.gl%s' is deprecated and will not work on all platforms. Report or update your "
           "script to use 'gpu' module.",
           function_name);
  CLOG_WARN(&LOG, "%s", message);
  PyErr_WarnEx(PyExc_DeprecationWarning, message, 1);
  times++;
}

static void report_deprecated_call_to_user()
{
  /* Only report the first deprecated usage. */
  if (G.opengl_deprecation_usage_detected) {
    return;
  }
  G.opengl_deprecation_usage_detected = true;
  PyC_FileAndNum(&G.opengl_deprecation_usage_filename, &G.opengl_deprecation_usage_lineno);
}
#endif

/** \} */

/* -------------------------------------------------------------------- */
/** \name Local utility defines for wrapping OpenGL
 * \{ */

/* By golly George! It looks like fancy pants macro time! */

/* TYPE_str is the string to pass to Py_ArgParse (for the format) */
/* TYPE_var is the name to pass to the GL function */
/* TYPE_ref is the pointer to pass to Py_ArgParse (to store in) */
/* TYPE_def is the C initialization of the variable */

#define void_str ""
#define void_var(num)
#define void_ref(num) &bgl_var##num
#define void_def(num) char bgl_var##num

#if 0
#  define buffer_str "O!"
#  define buffer_var(number) (bgl_buffer##number)->buf.asvoid
#  define buffer_ref(number) &BGL_bufferType, &bgl_buffer##number
#  define buffer_def(number) Buffer *bgl_buffer##number
#endif

/* GL Pointer fields, handled by buffer type */
/* GLdoubleP, GLfloatP, GLintP, GLuintP, GLshortP, GLsizeiP, GLcharP */

#define GLbooleanP_str "O!"
#define GLbooleanP_var(number) (bgl_buffer##number)->buf.asvoid
#define GLbooleanP_ref(number) &BGL_bufferType, &bgl_buffer##number
#define GLbooleanP_def(number) Buffer *bgl_buffer##number

#define GLbyteP_str "O!"
#define GLbyteP_var(number) (bgl_buffer##number)->buf.asvoid
#define GLbyteP_ref(number) &BGL_bufferType, &bgl_buffer##number
#define GLbyteP_def(number) Buffer *bgl_buffer##number

#define GLubyteP_str "O!"
#define GLubyteP_var(number) (bgl_buffer##number)->buf.asvoid
#define GLubyteP_ref(number) &BGL_bufferType, &bgl_buffer##number
#define GLubyteP_def(number) Buffer *bgl_buffer##number

#define GLintP_str "O!"
#define GLintP_var(number) (bgl_buffer##number)->buf.asvoid
#define GLintP_ref(number) &BGL_bufferType, &bgl_buffer##number
#define GLintP_def(number) Buffer *bgl_buffer##number

#define GLint64P_str "O!"
#define GLint64P_var(number) (bgl_buffer##number)->buf.asvoid
#define GLint64P_ref(number) &BGL_bufferType, &bgl_buffer##number
#define GLint64P_def(number) Buffer *bgl_buffer##number

#define GLenumP_str "O!"
#define GLenumP_var(number) (bgl_buffer##number)->buf.asvoid
#define GLenumP_ref(number) &BGL_bufferType, &bgl_buffer##number
#define GLenumP_def(number) Buffer *bgl_buffer##number

#define GLuintP_str "O!"
#define GLuintP_var(number) (bgl_buffer##number)->buf.asvoid
#define GLuintP_ref(number) &BGL_bufferType, &bgl_buffer##number
#define GLuintP_def(number) Buffer *bgl_buffer##number

#if 0
#  define GLuint64P_str "O!"
#  define GLuint64P_var(number) (bgl_buffer##number)->buf.asvoid
#  define GLuint64P_ref(number) &BGL_bufferType, &bgl_buffer##number
#  define GLuint64P_def(number) Buffer *bgl_buffer##number
#endif

#define GLshortP_str "O!"
#define GLshortP_var(number) (bgl_buffer##number)->buf.asvoid
#define GLshortP_ref(number) &BGL_bufferType, &bgl_buffer##number
#define GLshortP_def(number) Buffer *bgl_buffer##number

#define GLushortP_str "O!"
#define GLushortP_var(number) (bgl_buffer##number)->buf.asvoid
#define GLushortP_ref(number) &BGL_bufferType, &bgl_buffer##number
#define GLushortP_def(number) Buffer *bgl_buffer##number

#define GLfloatP_str "O!"
#define GLfloatP_var(number) (bgl_buffer##number)->buf.asvoid
#define GLfloatP_ref(number) &BGL_bufferType, &bgl_buffer##number
#define GLfloatP_def(number) Buffer *bgl_buffer##number

#define GLdoubleP_str "O!"
#define GLdoubleP_var(number) (bgl_buffer##number)->buf.asvoid
#define GLdoubleP_ref(number) &BGL_bufferType, &bgl_buffer##number
#define GLdoubleP_def(number) Buffer *bgl_buffer##number

#if 0
#  define GLclampfP_str "O!"
#  define GLclampfP_var(number) (bgl_buffer##number)->buf.asvoid
#  define GLclampfP_ref(number) &BGL_bufferType, &bgl_buffer##number
#  define GLclampfP_def(number) Buffer *bgl_buffer##number
#endif

struct BufferOrOffset {
  Buffer *buffer;
  void *offset;
};

#define GLvoidP_str "O&"
#define GLvoidP_var(number) \
  ((bgl_buffer##number.buffer) ? (bgl_buffer##number.buffer)->buf.asvoid : \
                                 (bgl_buffer##number.offset))
#define GLvoidP_ref(number) BGL_BufferOrOffsetConverter, &bgl_buffer##number
#define GLvoidP_def(number) BufferOrOffset bgl_buffer##number

#define GLsizeiP_str "O!"
#define GLsizeiP_var(number) (bgl_buffer##number)->buf.asvoid
#define GLsizeiP_ref(number) &BGL_bufferType, &bgl_buffer##number
#define GLsizeiP_def(number) Buffer *bgl_buffer##number

#define GLcharP_str "O!"
#define GLcharP_var(number) (bgl_buffer##number)->buf.asvoid
#define GLcharP_ref(number) &BGL_bufferType, &bgl_buffer##number
#define GLcharP_def(number) Buffer *bgl_buffer##number

#if 0
#  define buffer_str "O!"
#  define buffer_var(number) (bgl_buffer##number)->buf.asvoid
#  define buffer_ref(number) &BGL_bufferType, &bgl_buffer##number
#  define buffer_def(number) Buffer *bgl_buffer##number
#endif

/* The standard GL typedefs are used as prototypes, we can't
 * use the GL type directly because Py_ArgParse expects normal
 * C types.
 *
 * Py_ArgParse doesn't grok writing into unsigned variables,
 * so we use signed everything (even stuff that should be unsigned.
 */

/* Type: `typedef uint GLenum`. */
#define GLenum_str "i"
#define GLenum_var(num) bgl_var##num
#define GLenum_ref(num) &bgl_var##num
#define GLenum_def(num) /*unsigned*/ int GLenum_var(num)

/* Type: `typedef uint GLboolean`. */
#define GLboolean_str "b"
#define GLboolean_var(num) bgl_var##num
#define GLboolean_ref(num) &bgl_var##num
#define GLboolean_def(num) /*unsigned*/ char GLboolean_var(num)

/* Type: `typedef uint GLbitfield`. */
#define GLbitfield_str "i"
#define GLbitfield_var(num) bgl_var##num
#define GLbitfield_ref(num) &bgl_var##num
#define GLbitfield_def(num) /*unsigned*/ int GLbitfield_var(num)

#if 0
/* Type: `typedef signed char GLbyte`. */
#  define GLbyte_str "b"
#  define GLbyte_var(num) bgl_var##num
#  define GLbyte_ref(num) &bgl_var##num
#  define GLbyte_def(num) signed char GLbyte_var(num)
#endif

/* Type: `typedef short GLshort`. */
#define GLshort_str "h"
#define GLshort_var(num) bgl_var##num
#define GLshort_ref(num) &bgl_var##num
#define GLshort_def(num) short GLshort_var(num)

/* Type: `typedef int GLint`. */
#define GLint_str "i"
#define GLint_var(num) bgl_var##num
#define GLint_ref(num) &bgl_var##num
#define GLint_def(num) int GLint_var(num)

/* Type: `typedef int GLsizei`. */
#define GLsizei_str "n"
#define GLsizei_var(num) bgl_var##num
#define GLsizei_ref(num) &bgl_var##num
#define GLsizei_def(num) size_t GLsizei_var(num)

/* Type: `typedef int GLsizeiptr`. */
#define GLsizeiptr_str "n"
#define GLsizeiptr_var(num) bgl_var##num
#define GLsizeiptr_ref(num) &bgl_var##num
#define GLsizeiptr_def(num) size_t GLsizeiptr_var(num)

/* Type: `typedef int GLintptr`. */
#define GLintptr_str "n"
#define GLintptr_var(num) bgl_var##num
#define GLintptr_ref(num) &bgl_var##num
#define GLintptr_def(num) size_t GLintptr_var(num)

/* Type: `typedef uchar GLubyte`. */
#define GLubyte_str "B"
#define GLubyte_var(num) bgl_var##num
#define GLubyte_ref(num) &bgl_var##num
#define GLubyte_def(num) /*unsigned*/ char GLubyte_var(num)

#if 0
/* Type: `typedef ushort GLushort`. */
#  define GLushort_str "H"
#  define GLushort_var(num) bgl_var##num
#  define GLushort_ref(num) &bgl_var##num
#  define GLushort_def(num) /*unsigned*/ short GLushort_var(num)
#endif

/* Type: `typedef uint GLuint`. */
#define GLuint_str "I"
#define GLuint_var(num) bgl_var##num
#define GLuint_ref(num) &bgl_var##num
#define GLuint_def(num) /*unsigned*/ int GLuint_var(num)

/* Type: `typedef uint GLuint64`. */
#if 0
#  define GLuint64_str "Q"
#  define GLuint64_var(num) bgl_var##num
#  define GLuint64_ref(num) &bgl_var##num
#  define GLuint64_def(num) /*unsigned*/ int GLuint64_var(num)
#endif

/* Type: `typedef uint GLsync`. */
#if 0
#  define GLsync_str "I"
#  define GLsync_var(num) bgl_var##num
#  define GLsync_ref(num) &bgl_var##num
#  define GLsync_def(num) /*unsigned*/ int GLsync_var(num)
#endif

/* Type: `typedef float GLfloat`. */
#define GLfloat_str "f"
#define GLfloat_var(num) bgl_var##num
#define GLfloat_ref(num) &bgl_var##num
#define GLfloat_def(num) float GLfloat_var(num)

/* Type: `typedef char *GLstring`. */
#define GLstring_str "s"
#define GLstring_var(number) bgl_var##number
#define GLstring_ref(number) &bgl_var##number
#define GLstring_def(number) char *GLstring_var(number)

/* Type: `typedef float GLclampf`. */
#if 0
#  define GLclampf_str "f"
#  define GLclampf_var(num) bgl_var##num
#  define GLclampf_ref(num) &bgl_var##num
#  define GLclampf_def(num) float GLclampf_var(num)
#endif

/* Type: `typedef double GLdouble`. */
#define GLdouble_str "d"
#define GLdouble_var(num) bgl_var##num
#define GLdouble_ref(num) &bgl_var##num
#define GLdouble_def(num) double GLdouble_var(num)

/* Type: `typedef double GLclampd`. */
#if 0
#  define GLclampd_str "d"
#  define GLclampd_var(num) bgl_var##num
#  define GLclampd_ref(num) &bgl_var##num
#  define GLclampd_def(num) double GLclampd_var(num)
#endif

#define _arg_def1(a1) a1##_def(1)
#define _arg_def2(a1, a2) \
  _arg_def1(a1); \
  a2##_def(2)
#define _arg_def3(a1, a2, a3) \
  _arg_def2(a1, a2); \
  a3##_def(3)
#define _arg_def4(a1, a2, a3, a4) \
  _arg_def3(a1, a2, a3); \
  a4##_def(4)
#define _arg_def5(a1, a2, a3, a4, a5) \
  _arg_def4(a1, a2, a3, a4); \
  a5##_def(5)
#define _arg_def6(a1, a2, a3, a4, a5, a6) \
  _arg_def5(a1, a2, a3, a4, a5); \
  a6##_def(6)
#define _arg_def7(a1, a2, a3, a4, a5, a6, a7) \
  _arg_def6(a1, a2, a3, a4, a5, a6); \
  a7##_def(7)
#define _arg_def8(a1, a2, a3, a4, a5, a6, a7, a8) \
  _arg_def7(a1, a2, a3, a4, a5, a6, a7); \
  a8##_def(8)
#define _arg_def9(a1, a2, a3, a4, a5, a6, a7, a8, a9) \
  _arg_def8(a1, a2, a3, a4, a5, a6, a7, a8); \
  a9##_def(9)
#define _arg_def10(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) \
  _arg_def9(a1, a2, a3, a4, a5, a6, a7, a8, a9); \
  a10##_def(10)
#define _arg_def11(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11) \
  _arg_def10(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10); \
  a11##_def(11)
#define arg_def(...) VA_NARGS_CALL_OVERLOAD(_arg_def, __VA_ARGS__)

#define _arg_var1(a1) a1##_var(1)
#define _arg_var2(a1, a2) _arg_var1(a1), a2##_var(2)
#define _arg_var3(a1, a2, a3) _arg_var2(a1, a2), a3##_var(3)
#define _arg_var4(a1, a2, a3, a4) _arg_var3(a1, a2, a3), a4##_var(4)
#define _arg_var5(a1, a2, a3, a4, a5) _arg_var4(a1, a2, a3, a4), a5##_var(5)
#define _arg_var6(a1, a2, a3, a4, a5, a6) _arg_var5(a1, a2, a3, a4, a5), a6##_var(6)
#define _arg_var7(a1, a2, a3, a4, a5, a6, a7) _arg_var6(a1, a2, a3, a4, a5, a6), a7##_var(7)
#define _arg_var8(a1, a2, a3, a4, a5, a6, a7, a8) \
  _arg_var7(a1, a2, a3, a4, a5, a6, a7), a8##_var(8)
#define _arg_var9(a1, a2, a3, a4, a5, a6, a7, a8, a9) \
  _arg_var8(a1, a2, a3, a4, a5, a6, a7, a8), a9##_var(9)
#define _arg_var10(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) \
  _arg_var9(a1, a2, a3, a4, a5, a6, a7, a8, a9), a10##_var(10)
#define _arg_var11(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11) \
  _arg_var10(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10), a11##_var(11)
#define arg_var(...) VA_NARGS_CALL_OVERLOAD(_arg_var, __VA_ARGS__)

#define _arg_ref1(a1) a1##_ref(1)
#define _arg_ref2(a1, a2) _arg_ref1(a1), a2##_ref(2)
#define _arg_ref3(a1, a2, a3) _arg_ref2(a1, a2), a3##_ref(3)
#define _arg_ref4(a1, a2, a3, a4) _arg_ref3(a1, a2, a3), a4##_ref(4)
#define _arg_ref5(a1, a2, a3, a4, a5) _arg_ref4(a1, a2, a3, a4), a5##_ref(5)
#define _arg_ref6(a1, a2, a3, a4, a5, a6) _arg_ref5(a1, a2, a3, a4, a5), a6##_ref(6)
#define _arg_ref7(a1, a2, a3, a4, a5, a6, a7) _arg_ref6(a1, a2, a3, a4, a5, a6), a7##_ref(7)
#define _arg_ref8(a1, a2, a3, a4, a5, a6, a7, a8) \
  _arg_ref7(a1, a2, a3, a4, a5, a6, a7), a8##_ref(8)
#define _arg_ref9(a1, a2, a3, a4, a5, a6, a7, a8, a9) \
  _arg_ref8(a1, a2, a3, a4, a5, a6, a7, a8), a9##_ref(9)
#define _arg_ref10(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) \
  _arg_ref9(a1, a2, a3, a4, a5, a6, a7, a8, a9), a10##_ref(10)
#define _arg_ref11(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11) \
  _arg_ref10(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10), a11##_ref(11)
#define arg_ref(...) VA_NARGS_CALL_OVERLOAD(_arg_ref, __VA_ARGS__)

#define _arg_str1(a1) a1##_str
#define _arg_str2(a1, a2) _arg_str1(a1) a2##_str
#define _arg_str3(a1, a2, a3) _arg_str2(a1, a2) a3##_str
#define _arg_str4(a1, a2, a3, a4) _arg_str3(a1, a2, a3) a4##_str
#define _arg_str5(a1, a2, a3, a4, a5) _arg_str4(a1, a2, a3, a4) a5##_str
#define _arg_str6(a1, a2, a3, a4, a5, a6) _arg_str5(a1, a2, a3, a4, a5) a6##_str
#define _arg_str7(a1, a2, a3, a4, a5, a6, a7) _arg_str6(a1, a2, a3, a4, a5, a6) a7##_str
#define _arg_str8(a1, a2, a3, a4, a5, a6, a7, a8) _arg_str7(a1, a2, a3, a4, a5, a6, a7) a8##_str
#define _arg_str9(a1, a2, a3, a4, a5, a6, a7, a8, a9) \
  _arg_str8(a1, a2, a3, a4, a5, a6, a7, a8) a9##_str
#define _arg_str10(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) \
  _arg_str9(a1, a2, a3, a4, a5, a6, a7, a8, a9) a10##_str
#define _arg_str11(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11) \
  _arg_str10(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) a11##_str
#define arg_str(...) VA_NARGS_CALL_OVERLOAD(_arg_str, __VA_ARGS__)

#define ret_def_void
#define ret_set_void
#define ret_default_void
#define ret_ret_void return Py_INCREF(Py_None), Py_None

#define ret_def_GLint int ret_int
#define ret_set_GLint ret_int =
#define ret_default_GLint -1
#define ret_ret_GLint return PyLong_FromLong(ret_int)

#define ret_def_GLuint uint ret_uint
#define ret_set_GLuint ret_uint =
#define ret_default_GLuint 0
#define ret_ret_GLuint return PyLong_FromLong(long(ret_uint))

#if 0
#  define ret_def_GLsizei size_t ret_size_t
#  define ret_set_GLsizei ret_size_t =
#  define ret_ret_GLsizei return PyLong_FromSsize_t(ret_size_t)
#endif

#if 0
#  define ret_def_GLsync uint ret_sync
#  define ret_set_GLsync ret_sync =
#  define ret_ret_GLsync return PyLong_FromLong(long(ret_sync))
#endif

#define ret_def_GLenum uint ret_uint
#define ret_set_GLenum ret_uint =
#define ret_default_GLenum 0
#define ret_ret_GLenum return PyLong_FromLong(long(ret_uint))

#define ret_def_GLboolean uchar ret_bool
#define ret_set_GLboolean ret_bool =
#define ret_default_GLboolean GL_FALSE
#define ret_ret_GLboolean return PyLong_FromLong(long(ret_bool))

#define ret_def_GLstring \
  const char *default_GLstring = ""; \
  const uchar *ret_str
#define ret_set_GLstring ret_str =
#define ret_default_GLstring (const uchar *)default_GLstring

#define ret_ret_GLstring \
  if (ret_str) { \
    return PyUnicode_FromString((const char *)ret_str); \
  } \
\
  PyErr_SetString(PyExc_AttributeError, "could not get opengl string"); \
  return nullptr;

/** \} */

/* -------------------------------------------------------------------- */
/* Forward Declarations */

static PyObject *Buffer_new(PyTypeObject *type, PyObject *args, PyObject *kwds);
static PyObject *Method_ShaderSource(PyObject *self, PyObject *args);

/* Buffer sequence methods */

static Py_ssize_t Buffer_len(Buffer *self);
static PyObject *Buffer_item(Buffer *self, Py_ssize_t i);
static PyObject *Buffer_slice(Buffer *self, Py_ssize_t begin, Py_ssize_t end);
static int Buffer_ass_item(Buffer *self, Py_ssize_t i, PyObject *v);
static int Buffer_ass_slice(Buffer *self, Py_ssize_t begin, Py_ssize_t end, PyObject *seq);
static PyObject *Buffer_subscript(Buffer *self, PyObject *item);
static int Buffer_ass_subscript(Buffer *self, PyObject *item, PyObject *value);

/* -------------------------------------------------------------------- */
/** \name Utility Functions
 * \{ */

int BGL_typeSize(int type)
{
  switch (type) {
    case GL_BYTE:
      return sizeof(char);
    case GL_SHORT:
      return sizeof(short);
    case GL_INT:
      return sizeof(int);
    case GL_FLOAT:
      return sizeof(float);
    case GL_DOUBLE:
      return sizeof(double);
  }
  return -1;
}

static int gl_buffer_type_from_py_buffer(Py_buffer *pybuffer)
{
  const char format = PyC_StructFmt_type_from_str(pybuffer->format);
  const Py_ssize_t itemsize = pybuffer->itemsize;

  if (PyC_StructFmt_type_is_float_any(format)) {
    if (itemsize == 4) {
      return GL_FLOAT;
    }
    if (itemsize == 8) {
      return GL_DOUBLE;
    }
  }
  if (PyC_StructFmt_type_is_byte(format) || PyC_StructFmt_type_is_int_any(format)) {
    if (itemsize == 1) {
      return GL_BYTE;
    }
    if (itemsize == 2) {
      return GL_SHORT;
    }
    if (itemsize == 4) {
      return GL_INT;
    }
  }

  return -1; /* UNKNOWN */
}

static bool compare_dimensions(int ndim, const int *dim1, const Py_ssize_t *dim2)
{
  for (int i = 0; i < ndim; i++) {
    if (dim1[i] != dim2[i]) {
      return false;
    }
  }
  return true;
}

/** \} */

/* -------------------------------------------------------------------- */
/** \name Buffer API
 * \{ */

static PySequenceMethods Buffer_SeqMethods = {
    /*sq_length*/ (lenfunc)Buffer_len,
    /*sq_concat*/ nullptr,
    /*sq_repeat*/ nullptr,
    /*sq_item*/ (ssizeargfunc)Buffer_item,
    /*was_sq_slice*/ nullptr, /* DEPRECATED. Handled by #Buffer_item. */
    /*sq_ass_item*/ (ssizeobjargproc)Buffer_ass_item,
    /*was_sq_ass_slice*/ nullptr, /* DEPRECATED. Handled by #Buffer_ass_item. */
    /*sq_contains*/ nullptr,
    /*sq_inplace_concat*/ nullptr,
    /*sq_inplace_repeat*/ nullptr,
};

static PyMappingMethods Buffer_AsMapping = {
    /*mp_length*/ (lenfunc)Buffer_len,
    /*mp_subscript*/ (binaryfunc)Buffer_subscript,
    /*mp_ass_subscript*/ (objobjargproc)Buffer_ass_subscript,
};

static void Buffer_dealloc(Buffer *self);
static PyObject *Buffer_repr(Buffer *self);

static PyObject *Buffer_to_list(Buffer *self)
{
  int i, len = self->dimensions[0];
  PyObject *list = PyList_New(len);

  for (i = 0; i < len; i++) {
    PyList_SET_ITEM(list, i, Buffer_item(self, i));
  }

  return list;
}

static PyObject *Buffer_to_list_recursive(Buffer *self)
{
  PyObject *list;

  if (self->ndimensions > 1) {
    int i, len = self->dimensions[0];
    list = PyList_New(len);

    for (i = 0; i < len; i++) {
      Buffer *sub = (Buffer *)Buffer_item(self, i);
      PyList_SET_ITEM(list, i, Buffer_to_list_recursive(sub));
      Py_DECREF(sub);
    }
  }
  else {
    list = Buffer_to_list(self);
  }

  return list;
}

static PyObject *Buffer_dimensions(Buffer *self, void * /*arg*/)
{
  PyObject *list = PyList_New(self->ndimensions);
  int i;

  for (i = 0; i < self->ndimensions; i++) {
    PyList_SET_ITEM(list, i, PyLong_FromLong(self->dimensions[i]));
  }

  return list;
}

#ifdef __GNUC__
#  ifdef __clang__
#    pragma clang diagnostic push
#    pragma clang diagnostic ignored "-Wcast-function-type"
#  else
#    pragma GCC diagnostic push
#    pragma GCC diagnostic ignored "-Wcast-function-type"
#  endif
#endif

static PyMethodDef Buffer_methods[] = {
    {"to_list", (PyCFunction)Buffer_to_list_recursive, METH_NOARGS, "return the buffer as a list"},
    {nullptr, nullptr, 0, nullptr},
};

#ifdef __GNUC__
#  ifdef __clang__
#    pragma clang diagnostic pop
#  else
#    pragma GCC diagnostic pop
#  endif
#endif

static PyGetSetDef Buffer_getseters[] = {
    {"dimensions", (getter)Buffer_dimensions, nullptr, nullptr, nullptr},
    {nullptr, nullptr, nullptr, nullptr, nullptr},
};

PyTypeObject BGL_bufferType = {
    /*ob_base*/ PyVarObject_HEAD_INIT(nullptr, 0)
    /*tp_name*/ "bgl.Buffer",
    /*tp_basicsize*/ sizeof(Buffer),
    /*tp_itemsize*/ 0,
    /*tp_dealloc*/ (destructor)Buffer_dealloc,
    /*tp_vectorcall_offset*/ 0,
    /*tp_getattr*/ nullptr,
    /*tp_setattr*/ nullptr,
    /*tp_as_async*/ nullptr,
    /*tp_repr*/ (reprfunc)Buffer_repr,
    /*tp_as_number*/ nullptr,
    /*tp_as_sequence*/ &Buffer_SeqMethods,
    /*tp_as_mapping*/ &Buffer_AsMapping,
    /*tp_hash*/ nullptr,
    /*tp_call*/ nullptr,
    /*tp_str*/ nullptr,
    /*tp_getattro*/ nullptr,
    /*tp_setattro*/ nullptr,
    /*tp_as_buffer*/ nullptr,
    /*tp_flags*/ Py_TPFLAGS_DEFAULT,
    /*tp_doc*/ nullptr,
    /*tp_traverse*/ nullptr,
    /*tp_clear*/ nullptr,
    /*tp_richcompare*/ nullptr,
    /*tp_weaklistoffset*/ 0,
    /*tp_iter*/ nullptr,
    /*tp_iternext*/ nullptr,
    /*tp_methods*/ Buffer_methods,
    /*tp_members*/ nullptr,
    /*tp_getset*/ Buffer_getseters,
    /*tp_base*/ nullptr,
    /*tp_dict*/ nullptr,
    /*tp_descr_get*/ nullptr,
    /*tp_descr_set*/ nullptr,
    /*tp_dictoffset*/ 0,
    /*tp_init*/ nullptr,
    /*tp_alloc*/ nullptr,
    /*tp_new*/ Buffer_new,
    /*tp_free*/ nullptr,
    /*tp_is_gc*/ nullptr,
    /*tp_bases*/ nullptr,
    /*tp_mro*/ nullptr,
    /*tp_cache*/ nullptr,
    /*tp_subclasses*/ nullptr,
    /*tp_weaklist*/ nullptr,
    /*tp_del*/ nullptr,
    /*tp_version_tag*/ 0,
    /*tp_finalize*/ nullptr,
    /*tp_vectorcall*/ nullptr,
};

static Buffer *BGL_MakeBuffer_FromData(
    PyObject *parent, int type, int ndimensions, const int *dimensions, void *buf)
{
  Buffer *buffer = (Buffer *)PyObject_NEW(Buffer, &BGL_bufferType);

  Py_XINCREF(parent);
  buffer->parent = parent;
  buffer->ndimensions = ndimensions;
  buffer->dimensions = MEM_malloc_arrayN<int>(size_t(ndimensions), "Buffer dimensions");
  memcpy(buffer->dimensions, dimensions, ndimensions * sizeof(int));
  buffer->type = type;
  buffer->buf.asvoid = buf;

  return buffer;
}

Buffer *BGL_MakeBuffer(int type, int ndimensions, const int *dimensions, const void *initbuffer)
{
  Buffer *buffer;
  void *buf = nullptr;
  int i, size = BGL_typeSize(type);

  for (i = 0; i < ndimensions; i++) {
    size *= dimensions[i];
  }

  buf = MEM_mallocN(size, __func__);

  buffer = BGL_MakeBuffer_FromData(nullptr, type, ndimensions, dimensions, buf);

  if (initbuffer) {
    memcpy(buffer->buf.asvoid, initbuffer, size);
  }
  else {
    memset(buffer->buf.asvoid, 0, size);
  }
  return buffer;
}

#ifdef WITH_OPENGL_BACKEND
/* Custom converter function so we can support a buffer, an integer or nullptr.
 * Many OpenGL API functions can accept both an actual pointer or an offset
 * into a buffer that is already bound. */
static int BGL_BufferOrOffsetConverter(PyObject *object, BufferOrOffset *buffer)
{
  if (object == Py_None) {
    buffer->buffer = nullptr;
    buffer->offset = nullptr;
    return 1;
  }
  if (PyNumber_Check(object)) {
    const Py_ssize_t offset = PyNumber_AsSsize_t(object, PyExc_IndexError);
    if (offset == -1 && PyErr_Occurred()) {
      return 0;
    }

    buffer->buffer = nullptr;
    buffer->offset = (void *)offset;
    return 1;
  }
  if (PyObject_TypeCheck(object, &BGL_bufferType)) {
    buffer->buffer = (Buffer *)object;
    buffer->offset = nullptr;
    return 1;
  }

  PyErr_SetString(PyExc_TypeError, "expected a bgl.Buffer or None");
  return 0;
}
#endif

#define MAX_DIMENSIONS 256
static PyObject *Buffer_new(PyTypeObject * /*type*/, PyObject *args, PyObject *kwds)
{
  PyObject *length_ob = nullptr, *init = nullptr;
  Buffer *buffer = nullptr;
  int dimensions[MAX_DIMENSIONS];

  int type;
  Py_ssize_t i, ndimensions = 0;

  if (kwds && PyDict_Size(kwds)) {
    PyErr_SetString(PyExc_TypeError, "bgl.Buffer(): takes no keyword args");
    return nullptr;
  }

  if (!PyArg_ParseTuple(args, "iO|O: bgl.Buffer", &type, &length_ob, &init)) {
    return nullptr;
  }
  if (!ELEM(type, GL_BYTE, GL_SHORT, GL_INT, GL_FLOAT, GL_DOUBLE)) {
    PyErr_SetString(PyExc_AttributeError,
                    "invalid first argument type, should be one of "
                    "GL_BYTE, GL_SHORT, GL_INT, GL_FLOAT or GL_DOUBLE");
    return nullptr;
  }

  if (PyLong_Check(length_ob)) {
    ndimensions = 1;
    if ((dimensions[0] = PyLong_AsLong(length_ob)) < 1) {
      PyErr_SetString(PyExc_AttributeError,
                      "dimensions must be between 1 and " STRINGIFY(MAX_DIMENSIONS));
      return nullptr;
    }
  }
  else if (PySequence_Check(length_ob)) {
    ndimensions = PySequence_Size(length_ob);
    if (ndimensions > MAX_DIMENSIONS) {
      PyErr_SetString(PyExc_AttributeError,
                      "too many dimensions, max is " STRINGIFY(MAX_DIMENSIONS));
      return nullptr;
    }
    if (ndimensions < 1) {
      PyErr_SetString(PyExc_AttributeError, "sequence must have at least one dimension");
      return nullptr;
    }
    for (i = 0; i < ndimensions; i++) {
      PyObject *ob = PySequence_GetItem(length_ob, i);

      if (!PyLong_Check(ob)) {
        dimensions[i] = 1;
      }
      else {
        dimensions[i] = PyLong_AsLong(ob);
      }
      Py_DECREF(ob);

      if (dimensions[i] < 1) {
        PyErr_SetString(PyExc_AttributeError,
                        "dimensions must be between 1 and " STRINGIFY(MAX_DIMENSIONS));
        return nullptr;
      }
    }
  }
  else {
    PyErr_Format(PyExc_TypeError,
                 "invalid second argument expected a sequence "
                 "or an int, not a %.200s",
                 Py_TYPE(length_ob)->tp_name);
    return nullptr;
  }

  if (init && PyObject_CheckBuffer(init)) {
    Py_buffer pybuffer;

    if (PyObject_GetBuffer(init, &pybuffer, PyBUF_ND | PyBUF_FORMAT) == -1) {
      /* PyObject_GetBuffer raise a PyExc_BufferError */
      return nullptr;
    }

    if (type != gl_buffer_type_from_py_buffer(&pybuffer)) {
      PyErr_Format(PyExc_TypeError,
                   "`GL_TYPE` and `typestr` of object with buffer interface do not match. '%s'",
                   pybuffer.format);
    }
    else if (ndimensions != pybuffer.ndim ||
             !compare_dimensions(ndimensions, dimensions, pybuffer.shape))
    {
      PyErr_Format(PyExc_TypeError, "array size does not match");
    }
    else {
      buffer = BGL_MakeBuffer_FromData(init, type, pybuffer.ndim, dimensions, pybuffer.buf);
    }

    PyBuffer_Release(&pybuffer);
  }
  else {
    buffer = BGL_MakeBuffer(type, ndimensions, dimensions, nullptr);
    if (init && Buffer_ass_slice(buffer, 0, dimensions[0], init)) {
      Py_DECREF(buffer);
      return nullptr;
    }
  }

  return (PyObject *)buffer;
}

/* Buffer sequence methods */

static Py_ssize_t Buffer_len(Buffer *self)
{
  return self->dimensions[0];
}

static PyObject *Buffer_item(Buffer *self, Py_ssize_t i)
{
  if (i >= self->dimensions[0] || i < 0) {
    PyErr_SetString(PyExc_IndexError, "array index out of range");
    return nullptr;
  }

  if (self->ndimensions == 1) {
    switch (self->type) {
      case GL_BYTE:
        return Py_BuildValue("b", self->buf.asbyte[i]);
      case GL_SHORT:
        return Py_BuildValue("h", self->buf.asshort[i]);
      case GL_INT:
        return Py_BuildValue("i", self->buf.asint[i]);
      case GL_FLOAT:
        return PyFloat_FromDouble(self->buf.asfloat[i]);
      case GL_DOUBLE:
        return Py_BuildValue("d", self->buf.asdouble[i]);
    }
  }
  else {
    int j, offset = i * BGL_typeSize(self->type);

    for (j = 1; j < self->ndimensions; j++) {
      offset *= self->dimensions[j];
    }

    return (PyObject *)BGL_MakeBuffer_FromData((PyObject *)self,
                                               self->type,
                                               self->ndimensions - 1,
                                               self->dimensions + 1,
                                               self->buf.asbyte + offset);
  }

  return nullptr;
}

static PyObject *Buffer_slice(Buffer *self, Py_ssize_t begin, Py_ssize_t end)
{
  PyObject *list;

  begin = std::max<Py_ssize_t>(begin, 0);
  end = std::min<Py_ssize_t>(end, self->dimensions[0]);
  begin = std::min(begin, end);

  list = PyList_New(end - begin);

  for (Py_ssize_t count = begin; count < end; count++) {
    PyList_SET_ITEM(list, count - begin, Buffer_item(self, count));
  }
  return list;
}

static int Buffer_ass_item(Buffer *self, Py_ssize_t i, PyObject *v)
{
  if (i >= self->dimensions[0] || i < 0) {
    PyErr_SetString(PyExc_IndexError, "array assignment index out of range");
    return -1;
  }

  if (self->ndimensions != 1) {
    Buffer *row = (Buffer *)Buffer_item(self, i);

    if (row) {
      const int ret = Buffer_ass_slice(row, 0, self->dimensions[1], v);
      Py_DECREF(row);
      return ret;
    }

    return -1;
  }

  switch (self->type) {
    case GL_BYTE:
      return PyArg_Parse(v, "b:Expected ints", &self->buf.asbyte[i]) ? 0 : -1;
    case GL_SHORT:
      return PyArg_Parse(v, "h:Expected ints", &self->buf.asshort[i]) ? 0 : -1;
    case GL_INT:
      return PyArg_Parse(v, "i:Expected ints", &self->buf.asint[i]) ? 0 : -1;
    case GL_FLOAT:
      return PyArg_Parse(v, "f:Expected floats", &self->buf.asfloat[i]) ? 0 : -1;
    case GL_DOUBLE:
      return PyArg_Parse(v, "d:Expected floats", &self->buf.asdouble[i]) ? 0 : -1;
    default:
      return 0; /* should never happen */
  }
}

static int Buffer_ass_slice(Buffer *self, Py_ssize_t begin, Py_ssize_t end, PyObject *seq)
{
  PyObject *item;
  int err = 0;
  Py_ssize_t count;

  begin = std::max<Py_ssize_t>(begin, 0);
  end = std::min<Py_ssize_t>(end, self->dimensions[0]);
  begin = std::min(begin, end);

  if (!PySequence_Check(seq)) {
    PyErr_Format(PyExc_TypeError,
                 "buffer[:] = value, invalid assignment. "
                 "Expected a sequence, not an %.200s type",
                 Py_TYPE(seq)->tp_name);
    return -1;
  }

  /* Re-use count variable. */
  if ((count = PySequence_Size(seq)) != (end - begin)) {
    PyErr_Format(PyExc_TypeError,
                 "buffer[:] = value, size mismatch in assignment. "
                 "Expected: %d (given: %d)",
                 count,
                 end - begin);
    return -1;
  }

  for (count = begin; count < end; count++) {
    item = PySequence_GetItem(seq, count - begin);
    if (item) {
      err = Buffer_ass_item(self, count, item);
      Py_DECREF(item);
    }
    else {
      err = -1;
    }
    if (err) {
      break;
    }
  }
  return err;
}

static PyObject *Buffer_subscript(Buffer *self, PyObject *item)
{
  if (PyIndex_Check(item)) {
    Py_ssize_t i;
    i = PyNumber_AsSsize_t(item, PyExc_IndexError);
    if (i == -1 && PyErr_Occurred()) {
      return nullptr;
    }
    if (i < 0) {
      i += self->dimensions[0];
    }
    return Buffer_item(self, i);
  }
  if (PySlice_Check(item)) {
    Py_ssize_t start, stop, step, slicelength;

    if (PySlice_GetIndicesEx(item, self->dimensions[0], &start, &stop, &step, &slicelength) < 0) {
      return nullptr;
    }

    if (slicelength <= 0) {
      return PyTuple_New(0);
    }
    if (step == 1) {
      return Buffer_slice(self, start, stop);
    }

    PyErr_SetString(PyExc_IndexError, "slice steps not supported with vectors");
    return nullptr;
  }

  PyErr_Format(
      PyExc_TypeError, "buffer indices must be integers, not %.200s", Py_TYPE(item)->tp_name);
  return nullptr;
}

static int Buffer_ass_subscript(Buffer *self, PyObject *item, PyObject *value)
{
  if (PyIndex_Check(item)) {
    Py_ssize_t i = PyNumber_AsSsize_t(item, PyExc_IndexError);
    if (i == -1 && PyErr_Occurred()) {
      return -1;
    }
    if (i < 0) {
      i += self->dimensions[0];
    }
    return Buffer_ass_item(self, i, value);
  }
  if (PySlice_Check(item)) {
    Py_ssize_t start, stop, step, slicelength;

    if (PySlice_GetIndicesEx(item, self->dimensions[0], &start, &stop, &step, &slicelength) < 0) {
      return -1;
    }

    if (step == 1) {
      return Buffer_ass_slice(self, start, stop, value);
    }

    PyErr_SetString(PyExc_IndexError, "slice steps not supported with vectors");
    return -1;
  }

  PyErr_Format(
      PyExc_TypeError, "buffer indices must be integers, not %.200s", Py_TYPE(item)->tp_name);
  return -1;
}

static void Buffer_dealloc(Buffer *self)
{
  if (self->parent) {
    Py_DECREF(self->parent);
  }
  else {
    MEM_freeN(self->buf.asvoid);
  }

  MEM_freeN(self->dimensions);

  PyObject_DEL(self);
}

static PyObject *Buffer_repr(Buffer *self)
{
  PyObject *list = Buffer_to_list_recursive(self);
  PyObject *repr;
  const char *typestr;

  switch (self->type) {
    case GL_BYTE:
      typestr = "GL_BYTE";
      break;
    case GL_SHORT:
      typestr = "GL_SHORT";
      break;
    case GL_INT:
      typestr = "GL_INT";
      break;
    case GL_FLOAT:
      typestr = "GL_FLOAT";
      break;
    case GL_DOUBLE:
      typestr = "GL_DOUBLE";
      break;
    default:
      typestr = "UNKNOWN";
      break;
  }

  repr = PyUnicode_FromFormat("Buffer(%s, %R)", typestr, list);
  Py_DECREF(list);

  return repr;
}

/** \} */

/* -------------------------------------------------------------------- */
/** \name OpenGL API Wrapping
 * \{ */

#ifdef WITH_OPENGL_BACKEND
#  define BGL_Wrap(funcname, ret, arg_list) \
    static PyObject *Method_##funcname(PyObject * /*self*/, PyObject *args) \
    { \
      arg_def arg_list; \
      ret_def_##ret; \
      report_deprecated_call(#funcname); \
      if (!PyArg_ParseTuple(args, arg_str arg_list, arg_ref arg_list)) { \
        return nullptr; \
      } \
      const bool has_opengl_backend = GPU_backend_get_type() == GPU_BACKEND_OPENGL; \
      if (has_opengl_backend) { \
        GPU_bgl_start(); \
        ret_set_##ret gl##funcname(arg_var arg_list); \
      } \
      else { \
        report_deprecated_call_to_user(); \
        ret_set_##ret ret_default_##ret; \
      } \
      ret_ret_##ret; \
    }
#else

static void bgl_no_opengl_error()
{
  PyErr_SetString(PyExc_RuntimeError, "Built without OpenGL support");
}

#  define BGL_Wrap(funcname, ret, arg_list) \
    static PyObject *Method_##funcname(PyObject * /*self*/, PyObject *args) \
    { \
      (void)args; \
      bgl_no_opengl_error(); \
      return nullptr; \
    }
#endif

/* GL_VERSION_1_0 */
BGL_Wrap(BlendFunc, void, (GLenum, GLenum));
BGL_Wrap(Clear, void, (GLbitfield));
BGL_Wrap(ClearColor, void, (GLfloat, GLfloat, GLfloat, GLfloat));
BGL_Wrap(ClearDepth, void, (GLdouble));
BGL_Wrap(ClearStencil, void, (GLint));
BGL_Wrap(ColorMask, void, (GLboolean, GLboolean, GLboolean, GLboolean));
BGL_Wrap(CullFace, void, (GLenum));
BGL_Wrap(DepthFunc, void, (GLenum));
BGL_Wrap(DepthMask, void, (GLboolean));
BGL_Wrap(DepthRange, void, (GLdouble, GLdouble));
BGL_Wrap(Disable, void, (GLenum));
BGL_Wrap(DrawBuffer, void, (GLenum));
BGL_Wrap(Enable, void, (GLenum));
BGL_Wrap(Finish, void, (void));
BGL_Wrap(Flush, void, (void));
BGL_Wrap(FrontFace, void, (GLenum));
BGL_Wrap(GetBooleanv, void, (GLenum, GLbooleanP));
BGL_Wrap(GetDoublev, void, (GLenum, GLdoubleP));
BGL_Wrap(GetError, GLenum, (void));
BGL_Wrap(GetFloatv, void, (GLenum, GLfloatP));
BGL_Wrap(GetIntegerv, void, (GLenum, GLintP));
BGL_Wrap(GetString, GLstring, (GLenum));
BGL_Wrap(GetTexImage, void, (GLenum, GLint, GLenum, GLenum, GLvoidP));
BGL_Wrap(GetTexLevelParameterfv, void, (GLenum, GLint, GLenum, GLfloatP));
BGL_Wrap(GetTexLevelParameteriv, void, (GLenum, GLint, GLenum, GLintP));
BGL_Wrap(GetTexParameterfv, void, (GLenum, GLenum, GLfloatP));
BGL_Wrap(GetTexParameteriv, void, (GLenum, GLenum, GLintP));
BGL_Wrap(Hint, void, (GLenum, GLenum));
BGL_Wrap(IsEnabled, GLboolean, (GLenum));
BGL_Wrap(LineWidth, void, (GLfloat));
BGL_Wrap(LogicOp, void, (GLenum));
BGL_Wrap(PixelStoref, void, (GLenum, GLfloat));
BGL_Wrap(PixelStorei, void, (GLenum, GLint));
BGL_Wrap(PointSize, void, (GLfloat));
BGL_Wrap(PolygonMode, void, (GLenum, GLenum));
BGL_Wrap(ReadBuffer, void, (GLenum));
BGL_Wrap(ReadPixels, void, (GLint, GLint, GLsizei, GLsizei, GLenum, GLenum, GLvoidP));
BGL_Wrap(Scissor, void, (GLint, GLint, GLsizei, GLsizei));
BGL_Wrap(StencilFunc, void, (GLenum, GLint, GLuint));
BGL_Wrap(StencilMask, void, (GLuint));
BGL_Wrap(StencilOp, void, (GLenum, GLenum, GLenum));
BGL_Wrap(TexImage1D, void, (GLenum, GLint, GLint, GLsizei, GLint, GLenum, GLenum, GLvoidP));
BGL_Wrap(TexImage2D,
         void,
         (GLenum, GLint, GLint, GLsizei, GLsizei, GLint, GLenum, GLenum, GLvoidP));
BGL_Wrap(TexParameterf, void, (GLenum, GLenum, GLfloat));
BGL_Wrap(TexParameterfv, void, (GLenum, GLenum, GLfloatP));
BGL_Wrap(TexParameteri, void, (GLenum, GLenum, GLint));
BGL_Wrap(TexParameteriv, void, (GLenum, GLenum, GLintP));
BGL_Wrap(Viewport, void, (GLint, GLint, GLsizei, GLsizei));

/* GL_VERSION_1_1 */
BGL_Wrap(BindTexture, void, (GLenum, GLuint));
BGL_Wrap(CopyTexImage1D, void, (GLenum, GLint, GLenum, GLint, GLint, GLsizei, GLint));
BGL_Wrap(CopyTexImage2D, void, (GLenum, GLint, GLenum, GLint, GLint, GLsizei, GLsizei, GLint));
BGL_Wrap(CopyTexSubImage1D, void, (GLenum, GLint, GLint, GLint, GLint, GLsizei));
BGL_Wrap(CopyTexSubImage2D, void, (GLenum, GLint, GLint, GLint, GLint, GLint, GLsizei, GLsizei));
BGL_Wrap(DeleteTextures, void, (GLsizei, GLuintP));
BGL_Wrap(DrawArrays, void, (GLenum, GLint, GLsizei));
BGL_Wrap(DrawElements, void, (GLenum, GLsizei, GLenum, GLvoidP));
BGL_Wrap(GenTextures, void, (GLsizei, GLuintP));
BGL_Wrap(IsTexture, GLboolean, (GLuint));
BGL_Wrap(PolygonOffset, void, (GLfloat, GLfloat));
BGL_Wrap(TexSubImage1D, void, (GLenum, GLint, GLint, GLsizei, GLenum, GLenum, GLvoidP));
BGL_Wrap(TexSubImage2D,
         void,
         (GLenum, GLint, GLint, GLint, GLsizei, GLsizei, GLenum, GLenum, GLvoidP));

/* GL_VERSION_1_2 */
BGL_Wrap(CopyTexSubImage3D,
         void,
         (GLenum, GLint, GLint, GLint, GLint, GLint, GLint, GLsizei, GLsizei));
BGL_Wrap(DrawRangeElements, void, (GLenum, GLuint, GLuint, GLsizei, GLenum, GLvoidP));
BGL_Wrap(TexImage3D,
         void,
         (GLenum, GLint, GLint, GLsizei, GLsizei, GLsizei, GLint, GLenum, GLenum, GLvoidP));
BGL_Wrap(TexSubImage3D,
         void,
         (GLenum, GLint, GLint, GLint, GLint, GLsizei, GLsizei, GLsizei, GLenum, GLenum, GLvoidP));

/* GL_VERSION_1_3 */
BGL_Wrap(ActiveTexture, void, (GLenum));
BGL_Wrap(CompressedTexImage1D, void, (GLenum, GLint, GLenum, GLsizei, GLint, GLsizei, GLvoidP));
BGL_Wrap(CompressedTexImage2D,
         void,
         (GLenum, GLint, GLenum, GLsizei, GLsizei, GLint, GLsizei, GLvoidP));
BGL_Wrap(CompressedTexImage3D,
         void,
         (GLenum, GLint, GLenum, GLsizei, GLsizei, GLsizei, GLint, GLsizei, GLvoidP));
BGL_Wrap(CompressedTexSubImage1D, void, (GLenum, GLint, GLint, GLsizei, GLenum, GLsizei, GLvoidP));
BGL_Wrap(CompressedTexSubImage2D,
         void,
         (GLenum, GLint, GLint, GLint, GLsizei, GLsizei, GLenum, GLsizei, GLvoidP));
BGL_Wrap(
    CompressedTexSubImage3D,
    void,
    (GLenum, GLint, GLint, GLint, GLint, GLsizei, GLsizei, GLsizei, GLenum, GLsizei, GLvoidP));
BGL_Wrap(GetCompressedTexImage, void, (GLenum, GLint, GLvoidP));
BGL_Wrap(SampleCoverage, void, (GLfloat, GLboolean));

/* GL_VERSION_1_4 */
BGL_Wrap(BlendColor, void, (GLfloat, GLfloat, GLfloat, GLfloat));
BGL_Wrap(BlendEquation, void, (GLenum));

/* GL_VERSION_1_5 */
BGL_Wrap(BeginQuery, void, (GLenum, GLuint));
BGL_Wrap(BindBuffer, void, (GLenum, GLuint));
BGL_Wrap(BufferData, void, (GLenum, GLsizeiptr, GLvoidP, GLenum));
BGL_Wrap(BufferSubData, void, (GLenum, GLintptr, GLsizeiptr, GLvoidP));
BGL_Wrap(DeleteBuffers, void, (GLsizei, GLuintP));
BGL_Wrap(DeleteQueries, void, (GLsizei, GLuintP));
BGL_Wrap(EndQuery, void, (GLenum));
BGL_Wrap(GenBuffers, void, (GLsizei, GLuintP));
BGL_Wrap(GenQueries, void, (GLsizei, GLuintP));
BGL_Wrap(GetBufferParameteriv, void, (GLenum, GLenum, GLintP));
BGL_Wrap(GetBufferPointerv, void, (GLenum, GLenum, GLvoidP));
BGL_Wrap(GetBufferSubData, void, (GLenum, GLintptr, GLsizeiptr, GLvoidP));
BGL_Wrap(GetQueryObjectiv, void, (GLuint, GLenum, GLintP));
BGL_Wrap(GetQueryObjectuiv, void, (GLuint, GLenum, GLuintP));
BGL_Wrap(GetQueryiv, void, (GLenum, GLenum, GLintP));
BGL_Wrap(IsBuffer, GLboolean, (GLuint));
BGL_Wrap(IsQuery, GLboolean, (GLuint));
BGL_Wrap(MapBuffer, void, (GLenum, GLenum));
BGL_Wrap(UnmapBuffer, GLboolean, (GLenum));

/* GL_VERSION_2_0 */
BGL_Wrap(AttachShader, void, (GLuint, GLuint));
BGL_Wrap(BindAttribLocation, void, (GLuint, GLuint, GLstring));
BGL_Wrap(BlendEquationSeparate, void, (GLenum, GLenum));
BGL_Wrap(CompileShader, void, (GLuint));
BGL_Wrap(CreateProgram, GLuint, (void));
BGL_Wrap(CreateShader, GLuint, (GLenum));
BGL_Wrap(DeleteProgram, void, (GLuint));
BGL_Wrap(DeleteShader, void, (GLuint));
BGL_Wrap(DetachShader, void, (GLuint, GLuint));
BGL_Wrap(DisableVertexAttribArray, void, (GLuint));
BGL_Wrap(DrawBuffers, void, (GLsizei, GLenumP));
BGL_Wrap(EnableVertexAttribArray, void, (GLuint));
BGL_Wrap(GetActiveAttrib, void, (GLuint, GLuint, GLsizei, GLsizeiP, GLintP, GLenumP, GLcharP));
BGL_Wrap(GetActiveUniform, void, (GLuint, GLuint, GLsizei, GLsizeiP, GLintP, GLenumP, GLcharP));
BGL_Wrap(GetAttachedShaders, void, (GLuint, GLsizei, GLsizeiP, GLuintP));
BGL_Wrap(GetAttribLocation, GLint, (GLuint, GLstring));
BGL_Wrap(GetProgramInfoLog, void, (GLuint, GLsizei, GLsizeiP, GLcharP));
BGL_Wrap(GetProgramiv, void, (GLuint, GLenum, GLintP));
BGL_Wrap(GetShaderInfoLog, void, (GLuint, GLsizei, GLsizeiP, GLcharP));
BGL_Wrap(GetShaderSource, void, (GLuint, GLsizei, GLsizeiP, GLcharP));
BGL_Wrap(GetShaderiv, void, (GLuint, GLenum, GLintP));
BGL_Wrap(GetUniformLocation, GLint, (GLuint, GLstring));
BGL_Wrap(GetUniformfv, void, (GLuint, GLint, GLfloatP));
BGL_Wrap(GetUniformiv, void, (GLuint, GLint, GLintP));
BGL_Wrap(GetVertexAttribPointerv, void, (GLuint, GLenum, GLvoidP));
BGL_Wrap(GetVertexAttribdv, void, (GLuint, GLenum, GLdoubleP));
BGL_Wrap(GetVertexAttribfv, void, (GLuint, GLenum, GLfloatP));
BGL_Wrap(GetVertexAttribiv, void, (GLuint, GLenum, GLintP));
BGL_Wrap(IsProgram, GLboolean, (GLuint));
BGL_Wrap(IsShader, GLboolean, (GLuint));
BGL_Wrap(LinkProgram, void, (GLuint));
BGL_Wrap(StencilFuncSeparate, void, (GLenum, GLenum, GLint, GLuint));
BGL_Wrap(StencilMaskSeparate, void, (GLenum, GLuint));
BGL_Wrap(StencilOpSeparate, void, (GLenum, GLenum, GLenum, GLenum));
BGL_Wrap(Uniform1f, void, (GLint, GLfloat));
BGL_Wrap(Uniform1fv, void, (GLint, GLsizei, GLfloatP));
BGL_Wrap(Uniform1i, void, (GLint, GLint));
BGL_Wrap(Uniform1iv, void, (GLint, GLsizei, GLintP));
BGL_Wrap(Uniform2f, void, (GLint, GLfloat, GLfloat));
BGL_Wrap(Uniform2fv, void, (GLint, GLsizei, GLfloatP));
BGL_Wrap(Uniform2i, void, (GLint, GLint, GLint));
BGL_Wrap(Uniform2iv, void, (GLint, GLsizei, GLintP));
BGL_Wrap(Uniform3f, void, (GLint, GLfloat, GLfloat, GLfloat));
BGL_Wrap(Uniform3fv, void, (GLint, GLsizei, GLfloatP));
BGL_Wrap(Uniform3i, void, (GLint, GLint, GLint, GLint));
BGL_Wrap(Uniform3iv, void, (GLint, GLsizei, GLintP));
BGL_Wrap(Uniform4f, void, (GLint, GLfloat, GLfloat, GLfloat, GLfloat));
BGL_Wrap(Uniform4fv, void, (GLint, GLsizei, GLfloatP));
BGL_Wrap(Uniform4i, void, (GLint, GLint, GLint, GLint, GLint));
BGL_Wrap(Uniform4iv, void, (GLint, GLsizei, GLintP));
BGL_Wrap(UniformMatrix2fv, void, (GLint, GLsizei, GLboolean, GLfloatP));
BGL_Wrap(UniformMatrix3fv, void, (GLint, GLsizei, GLboolean, GLfloatP));
BGL_Wrap(UniformMatrix4fv, void, (GLint, GLsizei, GLboolean, GLfloatP));
BGL_Wrap(UseProgram, void, (GLuint));
BGL_Wrap(ValidateProgram, void, (GLuint));
BGL_Wrap(VertexAttrib1d, void, (GLuint, GLdouble));
BGL_Wrap(VertexAttrib1dv, void, (GLuint, GLdoubleP));
BGL_Wrap(VertexAttrib1f, void, (GLuint, GLfloat));
BGL_Wrap(VertexAttrib1fv, void, (GLuint, GLfloatP));
BGL_Wrap(VertexAttrib1s, void, (GLuint, GLshort));
BGL_Wrap(VertexAttrib1sv, void, (GLuint, GLshortP));
BGL_Wrap(VertexAttrib2d, void, (GLuint, GLdouble, GLdouble));
BGL_Wrap(VertexAttrib2dv, void, (GLuint, GLdoubleP));
BGL_Wrap(VertexAttrib2f, void, (GLuint, GLfloat, GLfloat));
BGL_Wrap(VertexAttrib2fv, void, (GLuint, GLfloatP));
BGL_Wrap(VertexAttrib2s, void, (GLuint, GLshort, GLshort));
BGL_Wrap(VertexAttrib2sv, void, (GLuint, GLshortP));
BGL_Wrap(VertexAttrib3d, void, (GLuint, GLdouble, GLdouble, GLdouble));
BGL_Wrap(VertexAttrib3dv, void, (GLuint, GLdoubleP));
BGL_Wrap(VertexAttrib3f, void, (GLuint, GLfloat, GLfloat, GLfloat));
BGL_Wrap(VertexAttrib3fv, void, (GLuint, GLfloatP));
BGL_Wrap(VertexAttrib3s, void, (GLuint, GLshort, GLshort, GLshort));
BGL_Wrap(VertexAttrib3sv, void, (GLuint, GLshortP));
BGL_Wrap(VertexAttrib4Nbv, void, (GLuint, GLbyteP));
BGL_Wrap(VertexAttrib4Niv, void, (GLuint, GLintP));
BGL_Wrap(VertexAttrib4Nsv, void, (GLuint, GLshortP));
BGL_Wrap(VertexAttrib4Nub, void, (GLuint, GLubyte, GLubyte, GLubyte, GLubyte));
BGL_Wrap(VertexAttrib4Nubv, void, (GLuint, GLubyteP));
BGL_Wrap(VertexAttrib4Nuiv, void, (GLuint, GLuintP));
BGL_Wrap(VertexAttrib4Nusv, void, (GLuint, GLushortP));
BGL_Wrap(VertexAttrib4bv, void, (GLuint, GLbyteP));
BGL_Wrap(VertexAttrib4d, void, (GLuint, GLdouble, GLdouble, GLdouble, GLdouble));
BGL_Wrap(VertexAttrib4dv, void, (GLuint, GLdoubleP));
BGL_Wrap(VertexAttrib4f, void, (GLuint, GLfloat, GLfloat, GLfloat, GLfloat));
BGL_Wrap(VertexAttrib4fv, void, (GLuint, GLfloatP));
BGL_Wrap(VertexAttrib4iv, void, (GLuint, GLintP));
BGL_Wrap(VertexAttrib4s, void, (GLuint, GLshort, GLshort, GLshort, GLshort));
BGL_Wrap(VertexAttrib4sv, void, (GLuint, GLshortP));
BGL_Wrap(VertexAttrib4ubv, void, (GLuint, GLubyteP));
BGL_Wrap(VertexAttrib4uiv, void, (GLuint, GLuintP));
BGL_Wrap(VertexAttrib4usv, void, (GLuint, GLushortP));
BGL_Wrap(VertexAttribPointer, void, (GLuint, GLint, GLenum, GLboolean, GLsizei, GLvoidP));

/* GL_VERSION_2_1 */
BGL_Wrap(UniformMatrix2x3fv, void, (GLint, GLsizei, GLboolean, GLfloatP));
BGL_Wrap(UniformMatrix2x4fv, void, (GLint, GLsizei, GLboolean, GLfloatP));
BGL_Wrap(UniformMatrix3x2fv, void, (GLint, GLsizei, GLboolean, GLfloatP));
BGL_Wrap(UniformMatrix3x4fv, void, (GLint, GLsizei, GLboolean, GLfloatP));
BGL_Wrap(UniformMatrix4x2fv, void, (GLint, GLsizei, GLboolean, GLfloatP));
BGL_Wrap(UniformMatrix4x3fv, void, (GLint, GLsizei, GLboolean, GLfloatP));

/* GL_VERSION_3_0 */
BGL_Wrap(BindFramebuffer, void, (GLenum, GLuint));
BGL_Wrap(BindRenderbuffer, void, (GLenum, GLuint));
BGL_Wrap(BindVertexArray, void, (GLuint));
BGL_Wrap(BlitFramebuffer,
         void,
         (GLint, GLint, GLint, GLint, GLint, GLint, GLint, GLint, GLbitfield, GLenum));
BGL_Wrap(CheckFramebufferStatus, GLenum, (GLenum));
BGL_Wrap(DeleteFramebuffers, void, (GLsizei, GLuintP));
BGL_Wrap(DeleteRenderbuffers, void, (GLsizei, GLuintP));
BGL_Wrap(DeleteVertexArrays, void, (GLsizei, GLuintP));
BGL_Wrap(FramebufferRenderbuffer, void, (GLenum, GLenum, GLenum, GLuint));
BGL_Wrap(GenFramebuffers, void, (GLsizei, GLuintP));
BGL_Wrap(GenRenderbuffers, void, (GLsizei, GLuintP));
BGL_Wrap(GenVertexArrays, void, (GLsizei, GLuintP));
BGL_Wrap(GetStringi, GLstring, (GLenum, GLuint));
BGL_Wrap(IsVertexArray, GLboolean, (GLuint));
BGL_Wrap(RenderbufferStorage, void, (GLenum, GLenum, GLsizei, GLsizei));
BGL_Wrap(VertexAttribIPointer, void, (GLuint, GLint, GLenum, GLsizei, GLvoidP));

/* GL_VERSION_3_1 */
BGL_Wrap(BindBufferBase, void, (GLenum, GLuint, GLuint));
BGL_Wrap(BindBufferRange, void, (GLenum, GLuint, GLuint, GLintptr, GLsizeiptr));
BGL_Wrap(GetActiveUniformBlockName, void, (GLuint, GLuint, GLsizei, GLsizeiP, GLcharP));
BGL_Wrap(GetActiveUniformBlockiv, void, (GLuint, GLuint, GLenum, GLintP));
BGL_Wrap(GetActiveUniformName, void, (GLuint, GLuint, GLsizei, GLsizeiP, GLcharP));
BGL_Wrap(GetActiveUniformsiv, void, (GLuint, GLsizei, GLuintP, GLenum, GLintP));
BGL_Wrap(GetIntegeri_v, void, (GLenum, GLuint, GLintP));
BGL_Wrap(GetUniformBlockIndex, GLuint, (GLuint, GLstring));
BGL_Wrap(GetUniformIndices, void, (GLuint, GLsizei, GLcharP, GLuintP));
BGL_Wrap(UniformBlockBinding, void, (GLuint, GLuint, GLuint));

/* GL_VERSION_3_2 */
BGL_Wrap(FramebufferTexture, void, (GLenum, GLenum, GLuint, GLint));
BGL_Wrap(GetBufferParameteri64v, void, (GLenum, GLenum, GLint64P));
BGL_Wrap(GetInteger64i_v, void, (GLenum, GLuint, GLint64P));
BGL_Wrap(GetMultisamplefv, void, (GLenum, GLuint, GLfloatP));
BGL_Wrap(SampleMaski, void, (GLuint, GLbitfield));
BGL_Wrap(TexImage2DMultisample, void, (GLenum, GLsizei, GLenum, GLsizei, GLsizei, GLboolean));
BGL_Wrap(TexImage3DMultisample,
         void,
         (GLenum, GLsizei, GLenum, GLsizei, GLsizei, GLsizei, GLboolean));

/* GL_VERSION_3_3 */
/* no new functions besides packed immediate mode (not part of core profile) */

/** \} */

/* -------------------------------------------------------------------- */
/** \name Module Definition
 * \{ */

static PyModuleDef BGL_module_def = {
    /*m_base*/ PyModuleDef_HEAD_INIT,
    /*m_name*/ "bgl",
    /*m_doc*/ nullptr,
    /*m_size*/ 0,
    /*m_methods*/ nullptr,
    /*m_slots*/ nullptr,
    /*m_traverse*/ nullptr,
    /*m_clear*/ nullptr,
    /*m_free*/ nullptr,
};

static void py_module_dict_add_int(PyObject *dict, const char *name, int value)
{
  PyObject *item;
  PyDict_SetItemString(dict, name, item = PyLong_FromLong(value));
  Py_DECREF(item);
}

static void py_module_dict_add_int64(PyObject *dict, const char *name, int64_t value)
{
  PyObject *item;
  PyDict_SetItemString(dict, name, item = PyLong_FromLongLong(value));
  Py_DECREF(item);
}

static void py_module_dict_add_method(PyObject *submodule,
                                      PyObject *dict,
                                      PyMethodDef *method_def,
                                      bool is_valid)
{
  if (is_valid) {
    PyObject *m;
    m = PyCFunction_NewEx(method_def, nullptr, submodule);
    PyDict_SetItemString(dict, method_def->ml_name, m);
    Py_DECREF(m);
  }
  else {
    PyDict_SetItemString(dict, method_def->ml_name, Py_None);
  }
}

/* needed since some function pointers won't be nullptr */
#ifdef __GNUC__
#  pragma GCC diagnostic ignored "-Waddress"
#endif

#ifdef WITH_OPENGL_BACKEND
#  define PY_MOD_ADD_METHOD(func) \
    { \
      static PyMethodDef method_def = {"gl" #func, Method_##func, METH_VARARGS}; \
      py_module_dict_add_method(submodule, dict, &method_def, (gl##func != nullptr)); \
    } \
    ((void)0)
#else
#  define PY_MOD_ADD_METHOD(func) \
    { \
      static PyMethodDef method_def = {"gl" #func, Method_##func, METH_VARARGS}; \
      py_module_dict_add_method(submodule, dict, &method_def, false); \
    } \
    ((void)0)
#endif

static void init_bgl_version_1_0_methods(PyObject *submodule, PyObject *dict)
{
  /* GL_VERSION_1_0 */
  PY_MOD_ADD_METHOD(BlendFunc);
  PY_MOD_ADD_METHOD(Clear);
  PY_MOD_ADD_METHOD(ClearColor);
  PY_MOD_ADD_METHOD(ClearDepth);
  PY_MOD_ADD_METHOD(ClearStencil);
  PY_MOD_ADD_METHOD(ColorMask);
  PY_MOD_ADD_METHOD(CullFace);
  PY_MOD_ADD_METHOD(DepthFunc);
  PY_MOD_ADD_METHOD(DepthMask);
  PY_MOD_ADD_METHOD(DepthRange);
  PY_MOD_ADD_METHOD(Disable);
  PY_MOD_ADD_METHOD(DrawBuffer);
  PY_MOD_ADD_METHOD(Enable);
  PY_MOD_ADD_METHOD(Finish);
  PY_MOD_ADD_METHOD(Flush);
  PY_MOD_ADD_METHOD(FrontFace);
  PY_MOD_ADD_METHOD(GetBooleanv);
  PY_MOD_ADD_METHOD(GetDoublev);
  PY_MOD_ADD_METHOD(GetError);
  PY_MOD_ADD_METHOD(GetFloatv);
  PY_MOD_ADD_METHOD(GetIntegerv);
  PY_MOD_ADD_METHOD(GetString);
  PY_MOD_ADD_METHOD(GetTexImage);
  PY_MOD_ADD_METHOD(GetTexLevelParameterfv);
  PY_MOD_ADD_METHOD(GetTexLevelParameteriv);
  PY_MOD_ADD_METHOD(GetTexParameterfv);
  PY_MOD_ADD_METHOD(GetTexParameteriv);
  PY_MOD_ADD_METHOD(Hint);
  PY_MOD_ADD_METHOD(IsEnabled);
  PY_MOD_ADD_METHOD(LineWidth);
  PY_MOD_ADD_METHOD(LogicOp);
  PY_MOD_ADD_METHOD(PixelStoref);
  PY_MOD_ADD_METHOD(PixelStorei);
  PY_MOD_ADD_METHOD(PointSize);
  PY_MOD_ADD_METHOD(PolygonMode);
  PY_MOD_ADD_METHOD(ReadBuffer);
  PY_MOD_ADD_METHOD(ReadPixels);
  PY_MOD_ADD_METHOD(Scissor);
  PY_MOD_ADD_METHOD(StencilFunc);
  PY_MOD_ADD_METHOD(StencilMask);
  PY_MOD_ADD_METHOD(StencilOp);
  PY_MOD_ADD_METHOD(TexImage1D);
  PY_MOD_ADD_METHOD(TexImage2D);
  PY_MOD_ADD_METHOD(TexParameterf);
  PY_MOD_ADD_METHOD(TexParameterfv);
  PY_MOD_ADD_METHOD(TexParameteri);
  PY_MOD_ADD_METHOD(TexParameteriv);
  PY_MOD_ADD_METHOD(Viewport);
}
static void init_bgl_version_1_1_methods(PyObject *submodule, PyObject *dict)
{
  /* GL_VERSION_1_1 */
  PY_MOD_ADD_METHOD(BindTexture);
  PY_MOD_ADD_METHOD(CopyTexImage1D);
  PY_MOD_ADD_METHOD(CopyTexImage2D);
  PY_MOD_ADD_METHOD(CopyTexSubImage1D);
  PY_MOD_ADD_METHOD(CopyTexSubImage2D);
  PY_MOD_ADD_METHOD(DeleteTextures);
  PY_MOD_ADD_METHOD(DrawArrays);
  PY_MOD_ADD_METHOD(DrawElements);
  PY_MOD_ADD_METHOD(GenTextures);
  PY_MOD_ADD_METHOD(IsTexture);
  PY_MOD_ADD_METHOD(PolygonOffset);
  PY_MOD_ADD_METHOD(TexSubImage1D);
  PY_MOD_ADD_METHOD(TexSubImage2D);
}
static void init_bgl_version_1_2_methods(PyObject *submodule, PyObject *dict)
{
  /* GL_VERSION_1_2 */
  PY_MOD_ADD_METHOD(CopyTexSubImage3D);
  PY_MOD_ADD_METHOD(DrawRangeElements);
  PY_MOD_ADD_METHOD(TexImage3D);
  PY_MOD_ADD_METHOD(TexSubImage3D);
}
static void init_bgl_version_1_3_methods(PyObject *submodule, PyObject *dict)
{
  /* GL_VERSION_1_3 */
  PY_MOD_ADD_METHOD(ActiveTexture);
  PY_MOD_ADD_METHOD(CompressedTexImage1D);
  PY_MOD_ADD_METHOD(CompressedTexImage2D);
  PY_MOD_ADD_METHOD(CompressedTexImage3D);
  PY_MOD_ADD_METHOD(CompressedTexSubImage1D);
  PY_MOD_ADD_METHOD(CompressedTexSubImage2D);
  PY_MOD_ADD_METHOD(CompressedTexSubImage3D);
  PY_MOD_ADD_METHOD(GetCompressedTexImage);
  PY_MOD_ADD_METHOD(SampleCoverage);
}
static void init_bgl_version_1_4_methods(PyObject *submodule, PyObject *dict)
{
  /* GL_VERSION_1_4 */
  PY_MOD_ADD_METHOD(BlendColor);
  PY_MOD_ADD_METHOD(BlendEquation);
}
static void init_bgl_version_1_5_methods(PyObject *submodule, PyObject *dict)
/* GL_VERSION_1_5 */
{
  PY_MOD_ADD_METHOD(BeginQuery);
  PY_MOD_ADD_METHOD(BindBuffer);
  PY_MOD_ADD_METHOD(BufferData);
  PY_MOD_ADD_METHOD(BufferSubData);
  PY_MOD_ADD_METHOD(DeleteBuffers);
  PY_MOD_ADD_METHOD(DeleteQueries);
  PY_MOD_ADD_METHOD(EndQuery);
  PY_MOD_ADD_METHOD(GenBuffers);
  PY_MOD_ADD_METHOD(GenQueries);
  PY_MOD_ADD_METHOD(GetBufferParameteriv);
  PY_MOD_ADD_METHOD(GetBufferPointerv);
  PY_MOD_ADD_METHOD(GetBufferSubData);
  PY_MOD_ADD_METHOD(GetQueryObjectiv);
  PY_MOD_ADD_METHOD(GetQueryObjectuiv);
  PY_MOD_ADD_METHOD(GetQueryiv);
  PY_MOD_ADD_METHOD(IsBuffer);
  PY_MOD_ADD_METHOD(IsQuery);
  PY_MOD_ADD_METHOD(MapBuffer);
  PY_MOD_ADD_METHOD(UnmapBuffer);
}
static void init_bgl_version_2_0_methods(PyObject *submodule, PyObject *dict)
{
  /* GL_VERSION_2_0 */
  PY_MOD_ADD_METHOD(AttachShader);
  PY_MOD_ADD_METHOD(BindAttribLocation);
  PY_MOD_ADD_METHOD(BlendEquationSeparate);
  PY_MOD_ADD_METHOD(CompileShader);
  PY_MOD_ADD_METHOD(CreateProgram);
  PY_MOD_ADD_METHOD(CreateShader);
  PY_MOD_ADD_METHOD(DeleteProgram);
  PY_MOD_ADD_METHOD(DeleteShader);
  PY_MOD_ADD_METHOD(DetachShader);
  PY_MOD_ADD_METHOD(DisableVertexAttribArray);
  PY_MOD_ADD_METHOD(DrawBuffers);
  PY_MOD_ADD_METHOD(EnableVertexAttribArray);
  PY_MOD_ADD_METHOD(GetActiveAttrib);
  PY_MOD_ADD_METHOD(GetActiveUniform);
  PY_MOD_ADD_METHOD(GetAttachedShaders);
  PY_MOD_ADD_METHOD(GetAttribLocation);
  PY_MOD_ADD_METHOD(GetProgramInfoLog);
  PY_MOD_ADD_METHOD(GetProgramiv);
  PY_MOD_ADD_METHOD(GetShaderInfoLog);
  PY_MOD_ADD_METHOD(GetShaderSource);
  PY_MOD_ADD_METHOD(GetShaderiv);
  PY_MOD_ADD_METHOD(GetUniformLocation);
  PY_MOD_ADD_METHOD(GetUniformfv);
  PY_MOD_ADD_METHOD(GetUniformiv);
  PY_MOD_ADD_METHOD(GetVertexAttribPointerv);
  PY_MOD_ADD_METHOD(GetVertexAttribdv);
  PY_MOD_ADD_METHOD(GetVertexAttribfv);
  PY_MOD_ADD_METHOD(GetVertexAttribiv);
  PY_MOD_ADD_METHOD(IsProgram);
  PY_MOD_ADD_METHOD(IsShader);
  PY_MOD_ADD_METHOD(LinkProgram);
  PY_MOD_ADD_METHOD(ShaderSource);
  PY_MOD_ADD_METHOD(StencilFuncSeparate);
  PY_MOD_ADD_METHOD(StencilMaskSeparate);
  PY_MOD_ADD_METHOD(StencilOpSeparate);
  PY_MOD_ADD_METHOD(Uniform1f);
  PY_MOD_ADD_METHOD(Uniform1fv);
  PY_MOD_ADD_METHOD(Uniform1i);
  PY_MOD_ADD_METHOD(Uniform1iv);
  PY_MOD_ADD_METHOD(Uniform2f);
  PY_MOD_ADD_METHOD(Uniform2fv);
  PY_MOD_ADD_METHOD(Uniform2i);
  PY_MOD_ADD_METHOD(Uniform2iv);
  PY_MOD_ADD_METHOD(Uniform3f);
  PY_MOD_ADD_METHOD(Uniform3fv);
  PY_MOD_ADD_METHOD(Uniform3i);
  PY_MOD_ADD_METHOD(Uniform3iv);
  PY_MOD_ADD_METHOD(Uniform4f);
  PY_MOD_ADD_METHOD(Uniform4fv);
  PY_MOD_ADD_METHOD(Uniform4i);
  PY_MOD_ADD_METHOD(Uniform4iv);
  PY_MOD_ADD_METHOD(UniformMatrix2fv);
  PY_MOD_ADD_METHOD(UniformMatrix3fv);
  PY_MOD_ADD_METHOD(UniformMatrix4fv);
  PY_MOD_ADD_METHOD(UseProgram);
  PY_MOD_ADD_METHOD(ValidateProgram);
  PY_MOD_ADD_METHOD(VertexAttrib1d);
  PY_MOD_ADD_METHOD(VertexAttrib1dv);
  PY_MOD_ADD_METHOD(VertexAttrib1f);
  PY_MOD_ADD_METHOD(VertexAttrib1fv);
  PY_MOD_ADD_METHOD(VertexAttrib1s);
  PY_MOD_ADD_METHOD(VertexAttrib1sv);
  PY_MOD_ADD_METHOD(VertexAttrib2d);
  PY_MOD_ADD_METHOD(VertexAttrib2dv);
  PY_MOD_ADD_METHOD(VertexAttrib2f);
  PY_MOD_ADD_METHOD(VertexAttrib2fv);
  PY_MOD_ADD_METHOD(VertexAttrib2s);
  PY_MOD_ADD_METHOD(VertexAttrib2sv);
  PY_MOD_ADD_METHOD(VertexAttrib3d);
  PY_MOD_ADD_METHOD(VertexAttrib3dv);
  PY_MOD_ADD_METHOD(VertexAttrib3f);
  PY_MOD_ADD_METHOD(VertexAttrib3fv);
  PY_MOD_ADD_METHOD(VertexAttrib3s);
  PY_MOD_ADD_METHOD(VertexAttrib3sv);
  PY_MOD_ADD_METHOD(VertexAttrib4Nbv);
  PY_MOD_ADD_METHOD(VertexAttrib4Niv);
  PY_MOD_ADD_METHOD(VertexAttrib4Nsv);
  PY_MOD_ADD_METHOD(VertexAttrib4Nub);
  PY_MOD_ADD_METHOD(VertexAttrib4Nubv);
  PY_MOD_ADD_METHOD(VertexAttrib4Nuiv);
  PY_MOD_ADD_METHOD(VertexAttrib4Nusv);
  PY_MOD_ADD_METHOD(VertexAttrib4bv);
  PY_MOD_ADD_METHOD(VertexAttrib4d);
  PY_MOD_ADD_METHOD(VertexAttrib4dv);
  PY_MOD_ADD_METHOD(VertexAttrib4f);
  PY_MOD_ADD_METHOD(VertexAttrib4fv);
  PY_MOD_ADD_METHOD(VertexAttrib4iv);
  PY_MOD_ADD_METHOD(VertexAttrib4s);
  PY_MOD_ADD_METHOD(VertexAttrib4sv);
  PY_MOD_ADD_METHOD(VertexAttrib4ubv);
  PY_MOD_ADD_METHOD(VertexAttrib4uiv);
  PY_MOD_ADD_METHOD(VertexAttrib4usv);
  PY_MOD_ADD_METHOD(VertexAttribPointer);
}
static void init_bgl_version_2_1_methods(PyObject *submodule, PyObject *dict)
{
  /* GL_VERSION_2_1 */
  PY_MOD_ADD_METHOD(UniformMatrix2x3fv);
  PY_MOD_ADD_METHOD(UniformMatrix2x4fv);
  PY_MOD_ADD_METHOD(UniformMatrix3x2fv);
  PY_MOD_ADD_METHOD(UniformMatrix3x4fv);
  PY_MOD_ADD_METHOD(UniformMatrix4x2fv);
  PY_MOD_ADD_METHOD(UniformMatrix4x3fv);
}
static void init_bgl_version_3_0_methods(PyObject *submodule, PyObject *dict)
{
  /* GL_VERSION_3_0 */
  PY_MOD_ADD_METHOD(BindFramebuffer);
  PY_MOD_ADD_METHOD(BindRenderbuffer);
  PY_MOD_ADD_METHOD(BindVertexArray);
  PY_MOD_ADD_METHOD(BlitFramebuffer);
  PY_MOD_ADD_METHOD(CheckFramebufferStatus);
  PY_MOD_ADD_METHOD(DeleteFramebuffers);
  PY_MOD_ADD_METHOD(DeleteRenderbuffers);
  PY_MOD_ADD_METHOD(DeleteVertexArrays);
  PY_MOD_ADD_METHOD(FramebufferRenderbuffer);
  PY_MOD_ADD_METHOD(GenFramebuffers);
  PY_MOD_ADD_METHOD(GenRenderbuffers);
  PY_MOD_ADD_METHOD(GenVertexArrays);
  PY_MOD_ADD_METHOD(GetStringi);
  PY_MOD_ADD_METHOD(IsVertexArray);
  PY_MOD_ADD_METHOD(RenderbufferStorage);
  PY_MOD_ADD_METHOD(VertexAttribIPointer);
}
static void init_bgl_version_3_1_methods(PyObject *submodule, PyObject *dict)
{
  /* GL_VERSION_3_1 */
  PY_MOD_ADD_METHOD(BindBufferBase);
  PY_MOD_ADD_METHOD(BindBufferRange);
  PY_MOD_ADD_METHOD(GetActiveUniformBlockName);
  PY_MOD_ADD_METHOD(GetActiveUniformBlockiv);
  PY_MOD_ADD_METHOD(GetActiveUniformName);
  PY_MOD_ADD_METHOD(GetActiveUniformsiv);
  PY_MOD_ADD_METHOD(GetIntegeri_v);
  PY_MOD_ADD_METHOD(GetUniformBlockIndex);
  PY_MOD_ADD_METHOD(GetUniformIndices);
  PY_MOD_ADD_METHOD(UniformBlockBinding);
}
static void init_bgl_version_3_2_methods(PyObject *submodule, PyObject *dict)
{
  /* GL_VERSION_3_2 */
  PY_MOD_ADD_METHOD(FramebufferTexture);
  PY_MOD_ADD_METHOD(GetBufferParameteri64v);
  PY_MOD_ADD_METHOD(GetInteger64i_v);
  PY_MOD_ADD_METHOD(GetMultisamplefv);
  PY_MOD_ADD_METHOD(SampleMaski);
  PY_MOD_ADD_METHOD(TexImage2DMultisample);
  PY_MOD_ADD_METHOD(TexImage3DMultisample);
}
static void init_bgl_version_3_3_methods(PyObject * /*submodule*/, PyObject * /*dict*/)
{
  /* GL_VERSION_3_3 */
}

#define PY_DICT_ADD_INT(x) py_module_dict_add_int(dict, #x, x)
#define PY_DICT_ADD_INT64(x) py_module_dict_add_int64(dict, #x, x)

static void init_bgl_version_1_1_constants(PyObject *dict)
{
  /* GL_VERSION_1_1 */
  PY_DICT_ADD_INT(GL_ALPHA);
  PY_DICT_ADD_INT(GL_ALWAYS);
  PY_DICT_ADD_INT(GL_AND);
  PY_DICT_ADD_INT(GL_AND_INVERTED);
  PY_DICT_ADD_INT(GL_AND_REVERSE);
  PY_DICT_ADD_INT(GL_BACK);
  PY_DICT_ADD_INT(GL_BACK_LEFT);
  PY_DICT_ADD_INT(GL_BACK_RIGHT);
  PY_DICT_ADD_INT(GL_BLEND);
  PY_DICT_ADD_INT(GL_BLEND_DST);
  PY_DICT_ADD_INT(GL_BLEND_SRC);
  PY_DICT_ADD_INT(GL_BLUE);
  PY_DICT_ADD_INT(GL_BYTE);
  PY_DICT_ADD_INT(GL_CCW);
  PY_DICT_ADD_INT(GL_CLEAR);
  PY_DICT_ADD_INT(GL_COLOR);
  PY_DICT_ADD_INT(GL_COLOR_BUFFER_BIT);
  PY_DICT_ADD_INT(GL_COLOR_CLEAR_VALUE);
  PY_DICT_ADD_INT(GL_COLOR_LOGIC_OP);
  PY_DICT_ADD_INT(GL_COLOR_WRITEMASK);
  PY_DICT_ADD_INT(GL_COPY);
  PY_DICT_ADD_INT(GL_COPY_INVERTED);
  PY_DICT_ADD_INT(GL_CULL_FACE);
  PY_DICT_ADD_INT(GL_CULL_FACE_MODE);
  PY_DICT_ADD_INT(GL_CW);
  PY_DICT_ADD_INT(GL_DECR);
  PY_DICT_ADD_INT(GL_DEPTH);
  PY_DICT_ADD_INT(GL_DEPTH_BUFFER_BIT);
  PY_DICT_ADD_INT(GL_DEPTH_CLEAR_VALUE);
  PY_DICT_ADD_INT(GL_DEPTH_COMPONENT);
  PY_DICT_ADD_INT(GL_DEPTH_FUNC);
  PY_DICT_ADD_INT(GL_DEPTH_RANGE);
  PY_DICT_ADD_INT(GL_DEPTH_TEST);
  PY_DICT_ADD_INT(GL_DEPTH_WRITEMASK);
  PY_DICT_ADD_INT(GL_DITHER);
  PY_DICT_ADD_INT(GL_DONT_CARE);
  PY_DICT_ADD_INT(GL_DOUBLE);
  PY_DICT_ADD_INT(GL_DOUBLEBUFFER);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER);
  PY_DICT_ADD_INT(GL_DST_ALPHA);
  PY_DICT_ADD_INT(GL_DST_COLOR);
  PY_DICT_ADD_INT(GL_EQUAL);
  PY_DICT_ADD_INT(GL_EQUIV);
  PY_DICT_ADD_INT(GL_EXTENSIONS);
  PY_DICT_ADD_INT(GL_FALSE);
  PY_DICT_ADD_INT(GL_FASTEST);
  PY_DICT_ADD_INT(GL_FILL);
  PY_DICT_ADD_INT(GL_FLOAT);
  PY_DICT_ADD_INT(GL_FRONT);
  PY_DICT_ADD_INT(GL_FRONT_AND_BACK);
  PY_DICT_ADD_INT(GL_FRONT_FACE);
  PY_DICT_ADD_INT(GL_FRONT_LEFT);
  PY_DICT_ADD_INT(GL_FRONT_RIGHT);
  PY_DICT_ADD_INT(GL_GEQUAL);
  PY_DICT_ADD_INT(GL_GREATER);
  PY_DICT_ADD_INT(GL_GREEN);
  PY_DICT_ADD_INT(GL_INCR);
  PY_DICT_ADD_INT(GL_INT);
  PY_DICT_ADD_INT(GL_INVALID_ENUM);
  PY_DICT_ADD_INT(GL_INVALID_OPERATION);
  PY_DICT_ADD_INT(GL_INVALID_VALUE);
  PY_DICT_ADD_INT(GL_INVERT);
  PY_DICT_ADD_INT(GL_KEEP);
  PY_DICT_ADD_INT(GL_LEFT);
  PY_DICT_ADD_INT(GL_LEQUAL);
  PY_DICT_ADD_INT(GL_LESS);
  PY_DICT_ADD_INT(GL_LINE);
  PY_DICT_ADD_INT(GL_LINEAR);
  PY_DICT_ADD_INT(GL_LINEAR_MIPMAP_LINEAR);
  PY_DICT_ADD_INT(GL_LINEAR_MIPMAP_NEAREST);
  PY_DICT_ADD_INT(GL_LINES);
  PY_DICT_ADD_INT(GL_LINE_LOOP);
  PY_DICT_ADD_INT(GL_LINE_SMOOTH);
  PY_DICT_ADD_INT(GL_LINE_SMOOTH_HINT);
  PY_DICT_ADD_INT(GL_LINE_STRIP);
  PY_DICT_ADD_INT(GL_LINE_WIDTH);
  PY_DICT_ADD_INT(GL_LINE_WIDTH_GRANULARITY);
  PY_DICT_ADD_INT(GL_LINE_WIDTH_RANGE);
  PY_DICT_ADD_INT(GL_LOGIC_OP_MODE);
  PY_DICT_ADD_INT(GL_MAX_TEXTURE_SIZE);
  PY_DICT_ADD_INT(GL_MAX_VIEWPORT_DIMS);
  PY_DICT_ADD_INT(GL_NAND);
  PY_DICT_ADD_INT(GL_NEAREST);
  PY_DICT_ADD_INT(GL_NEAREST_MIPMAP_LINEAR);
  PY_DICT_ADD_INT(GL_NEAREST_MIPMAP_NEAREST);
  PY_DICT_ADD_INT(GL_NEVER);
  PY_DICT_ADD_INT(GL_NICEST);
  PY_DICT_ADD_INT(GL_NONE);
  PY_DICT_ADD_INT(GL_NOOP);
  PY_DICT_ADD_INT(GL_NOR);
  PY_DICT_ADD_INT(GL_NOTEQUAL);
  PY_DICT_ADD_INT(GL_NO_ERROR);
  PY_DICT_ADD_INT(GL_ONE);
  PY_DICT_ADD_INT(GL_ONE_MINUS_DST_ALPHA);
  PY_DICT_ADD_INT(GL_ONE_MINUS_DST_COLOR);
  PY_DICT_ADD_INT(GL_ONE_MINUS_SRC_ALPHA);
  PY_DICT_ADD_INT(GL_ONE_MINUS_SRC_COLOR);
  PY_DICT_ADD_INT(GL_OR);
  PY_DICT_ADD_INT(GL_OR_INVERTED);
  PY_DICT_ADD_INT(GL_OR_REVERSE);
  PY_DICT_ADD_INT(GL_OUT_OF_MEMORY);
  PY_DICT_ADD_INT(GL_PACK_ALIGNMENT);
  PY_DICT_ADD_INT(GL_PACK_LSB_FIRST);
  PY_DICT_ADD_INT(GL_PACK_ROW_LENGTH);
  PY_DICT_ADD_INT(GL_PACK_SKIP_PIXELS);
  PY_DICT_ADD_INT(GL_PACK_SKIP_ROWS);
  PY_DICT_ADD_INT(GL_PACK_SWAP_BYTES);
  PY_DICT_ADD_INT(GL_POINT);
  PY_DICT_ADD_INT(GL_POINTS);
  PY_DICT_ADD_INT(GL_POINT_SIZE);
  PY_DICT_ADD_INT(GL_POLYGON_MODE);
  PY_DICT_ADD_INT(GL_POLYGON_OFFSET_FACTOR);
  PY_DICT_ADD_INT(GL_POLYGON_OFFSET_FILL);
  PY_DICT_ADD_INT(GL_POLYGON_OFFSET_LINE);
  PY_DICT_ADD_INT(GL_POLYGON_OFFSET_POINT);
  PY_DICT_ADD_INT(GL_POLYGON_OFFSET_UNITS);
  PY_DICT_ADD_INT(GL_POLYGON_SMOOTH);
  PY_DICT_ADD_INT(GL_POLYGON_SMOOTH_HINT);
  PY_DICT_ADD_INT(GL_PROXY_TEXTURE_1D);
  PY_DICT_ADD_INT(GL_PROXY_TEXTURE_2D);
  PY_DICT_ADD_INT(GL_R3_G3_B2);
  PY_DICT_ADD_INT(GL_READ_BUFFER);
  PY_DICT_ADD_INT(GL_RED);
  PY_DICT_ADD_INT(GL_RENDERER);
  PY_DICT_ADD_INT(GL_REPEAT);
  PY_DICT_ADD_INT(GL_REPLACE);
  PY_DICT_ADD_INT(GL_RGB);
  PY_DICT_ADD_INT(GL_RGB10);
  PY_DICT_ADD_INT(GL_RGB10_A2);
  PY_DICT_ADD_INT(GL_RGB12);
  PY_DICT_ADD_INT(GL_RGB16);
  PY_DICT_ADD_INT(GL_RGB4);
  PY_DICT_ADD_INT(GL_RGB5);
  PY_DICT_ADD_INT(GL_RGB5_A1);
  PY_DICT_ADD_INT(GL_RGB8);
  PY_DICT_ADD_INT(GL_RGBA);
  PY_DICT_ADD_INT(GL_RGBA12);
  PY_DICT_ADD_INT(GL_RGBA16);
  PY_DICT_ADD_INT(GL_RGBA2);
  PY_DICT_ADD_INT(GL_RGBA4);
  PY_DICT_ADD_INT(GL_RGBA8);
  PY_DICT_ADD_INT(GL_RIGHT);
  PY_DICT_ADD_INT(GL_SCISSOR_BOX);
  PY_DICT_ADD_INT(GL_SCISSOR_TEST);
  PY_DICT_ADD_INT(GL_SET);
  PY_DICT_ADD_INT(GL_SHORT);
  PY_DICT_ADD_INT(GL_SRC_ALPHA);
  PY_DICT_ADD_INT(GL_SRC_ALPHA_SATURATE);
  PY_DICT_ADD_INT(GL_SRC_COLOR);
  PY_DICT_ADD_INT(GL_STENCIL);
  PY_DICT_ADD_INT(GL_STENCIL_BUFFER_BIT);
  PY_DICT_ADD_INT(GL_STENCIL_CLEAR_VALUE);
  PY_DICT_ADD_INT(GL_STENCIL_FAIL);
  PY_DICT_ADD_INT(GL_STENCIL_FUNC);
  PY_DICT_ADD_INT(GL_STENCIL_INDEX);
  PY_DICT_ADD_INT(GL_STENCIL_PASS_DEPTH_FAIL);
  PY_DICT_ADD_INT(GL_STENCIL_PASS_DEPTH_PASS);
  PY_DICT_ADD_INT(GL_STENCIL_REF);
  PY_DICT_ADD_INT(GL_STENCIL_TEST);
  PY_DICT_ADD_INT(GL_STENCIL_VALUE_MASK);
  PY_DICT_ADD_INT(GL_STENCIL_WRITEMASK);
  PY_DICT_ADD_INT(GL_STEREO);
  PY_DICT_ADD_INT(GL_SUBPIXEL_BITS);
  PY_DICT_ADD_INT(GL_TEXTURE);
  PY_DICT_ADD_INT(GL_TEXTURE_1D);
  PY_DICT_ADD_INT(GL_TEXTURE_2D);
  PY_DICT_ADD_INT(GL_TEXTURE_ALPHA_SIZE);
  PY_DICT_ADD_INT(GL_TEXTURE_BINDING_1D);
  PY_DICT_ADD_INT(GL_TEXTURE_BINDING_2D);
  PY_DICT_ADD_INT(GL_TEXTURE_BLUE_SIZE);
  PY_DICT_ADD_INT(GL_TEXTURE_BORDER_COLOR);
  PY_DICT_ADD_INT(GL_TEXTURE_GREEN_SIZE);
  PY_DICT_ADD_INT(GL_TEXTURE_HEIGHT);
  PY_DICT_ADD_INT(GL_TEXTURE_INTERNAL_FORMAT);
  PY_DICT_ADD_INT(GL_TEXTURE_MAG_FILTER);
  PY_DICT_ADD_INT(GL_TEXTURE_MIN_FILTER);
  PY_DICT_ADD_INT(GL_TEXTURE_RED_SIZE);
  PY_DICT_ADD_INT(GL_TEXTURE_WIDTH);
  PY_DICT_ADD_INT(GL_TEXTURE_WRAP_S);
  PY_DICT_ADD_INT(GL_TEXTURE_WRAP_T);
  PY_DICT_ADD_INT(GL_TRIANGLES);
  PY_DICT_ADD_INT(GL_TRIANGLE_FAN);
  PY_DICT_ADD_INT(GL_TRIANGLE_STRIP);
  PY_DICT_ADD_INT(GL_TRUE);
  PY_DICT_ADD_INT(GL_UNPACK_ALIGNMENT);
  PY_DICT_ADD_INT(GL_UNPACK_LSB_FIRST);
  PY_DICT_ADD_INT(GL_UNPACK_ROW_LENGTH);
  PY_DICT_ADD_INT(GL_UNPACK_SKIP_PIXELS);
  PY_DICT_ADD_INT(GL_UNPACK_SKIP_ROWS);
  PY_DICT_ADD_INT(GL_UNPACK_SWAP_BYTES);
  PY_DICT_ADD_INT(GL_UNSIGNED_BYTE);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT);
  PY_DICT_ADD_INT(GL_UNSIGNED_SHORT);
  PY_DICT_ADD_INT(GL_VENDOR);
  PY_DICT_ADD_INT(GL_VERSION);
  PY_DICT_ADD_INT(GL_VIEWPORT);
  PY_DICT_ADD_INT(GL_XOR);
  PY_DICT_ADD_INT(GL_ZERO);
}
static void init_bgl_version_1_2_constants(PyObject *dict)
{
  /* GL_VERSION_1_2 */
  PY_DICT_ADD_INT(GL_ALIASED_LINE_WIDTH_RANGE);
  PY_DICT_ADD_INT(GL_BGR);
  PY_DICT_ADD_INT(GL_BGRA);
  PY_DICT_ADD_INT(GL_CLAMP_TO_EDGE);
  PY_DICT_ADD_INT(GL_MAX_3D_TEXTURE_SIZE);
  PY_DICT_ADD_INT(GL_MAX_ELEMENTS_INDICES);
  PY_DICT_ADD_INT(GL_MAX_ELEMENTS_VERTICES);
  PY_DICT_ADD_INT(GL_PACK_IMAGE_HEIGHT);
  PY_DICT_ADD_INT(GL_PACK_SKIP_IMAGES);
  PY_DICT_ADD_INT(GL_PROXY_TEXTURE_3D);
  PY_DICT_ADD_INT(GL_SMOOTH_LINE_WIDTH_GRANULARITY);
  PY_DICT_ADD_INT(GL_SMOOTH_LINE_WIDTH_RANGE);
  PY_DICT_ADD_INT(GL_SMOOTH_POINT_SIZE_GRANULARITY);
  PY_DICT_ADD_INT(GL_SMOOTH_POINT_SIZE_RANGE);
  PY_DICT_ADD_INT(GL_TEXTURE_3D);
  PY_DICT_ADD_INT(GL_TEXTURE_BASE_LEVEL);
  PY_DICT_ADD_INT(GL_TEXTURE_BINDING_3D);
  PY_DICT_ADD_INT(GL_TEXTURE_DEPTH);
  PY_DICT_ADD_INT(GL_TEXTURE_MAX_LEVEL);
  PY_DICT_ADD_INT(GL_TEXTURE_MAX_LOD);
  PY_DICT_ADD_INT(GL_TEXTURE_MIN_LOD);
  PY_DICT_ADD_INT(GL_TEXTURE_WRAP_R);
  PY_DICT_ADD_INT(GL_UNPACK_IMAGE_HEIGHT);
  PY_DICT_ADD_INT(GL_UNPACK_SKIP_IMAGES);
  PY_DICT_ADD_INT(GL_UNSIGNED_BYTE_2_3_3_REV);
  PY_DICT_ADD_INT(GL_UNSIGNED_BYTE_3_3_2);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_10_10_10_2);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_2_10_10_10_REV);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_8_8_8_8);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_8_8_8_8_REV);
  PY_DICT_ADD_INT(GL_UNSIGNED_SHORT_1_5_5_5_REV);
  PY_DICT_ADD_INT(GL_UNSIGNED_SHORT_4_4_4_4);
  PY_DICT_ADD_INT(GL_UNSIGNED_SHORT_4_4_4_4_REV);
  PY_DICT_ADD_INT(GL_UNSIGNED_SHORT_5_5_5_1);
  PY_DICT_ADD_INT(GL_UNSIGNED_SHORT_5_6_5);
  PY_DICT_ADD_INT(GL_UNSIGNED_SHORT_5_6_5_REV);
}
static void init_bgl_version_1_3_constants(PyObject *dict)
{
  /* GL_VERSION_1_3 */
  PY_DICT_ADD_INT(GL_ACTIVE_TEXTURE);
  PY_DICT_ADD_INT(GL_CLAMP_TO_BORDER);
  PY_DICT_ADD_INT(GL_COMPRESSED_RGB);
  PY_DICT_ADD_INT(GL_COMPRESSED_RGBA);
  PY_DICT_ADD_INT(GL_COMPRESSED_TEXTURE_FORMATS);
  PY_DICT_ADD_INT(GL_MAX_CUBE_MAP_TEXTURE_SIZE);
  PY_DICT_ADD_INT(GL_MULTISAMPLE);
  PY_DICT_ADD_INT(GL_NUM_COMPRESSED_TEXTURE_FORMATS);
  PY_DICT_ADD_INT(GL_PROXY_TEXTURE_CUBE_MAP);
  PY_DICT_ADD_INT(GL_SAMPLES);
  PY_DICT_ADD_INT(GL_SAMPLE_ALPHA_TO_COVERAGE);
  PY_DICT_ADD_INT(GL_SAMPLE_ALPHA_TO_ONE);
  PY_DICT_ADD_INT(GL_SAMPLE_BUFFERS);
  PY_DICT_ADD_INT(GL_SAMPLE_COVERAGE);
  PY_DICT_ADD_INT(GL_SAMPLE_COVERAGE_INVERT);
  PY_DICT_ADD_INT(GL_SAMPLE_COVERAGE_VALUE);
  PY_DICT_ADD_INT(GL_TEXTURE0);
  PY_DICT_ADD_INT(GL_TEXTURE1);
  PY_DICT_ADD_INT(GL_TEXTURE10);
  PY_DICT_ADD_INT(GL_TEXTURE11);
  PY_DICT_ADD_INT(GL_TEXTURE12);
  PY_DICT_ADD_INT(GL_TEXTURE13);
  PY_DICT_ADD_INT(GL_TEXTURE14);
  PY_DICT_ADD_INT(GL_TEXTURE15);
  PY_DICT_ADD_INT(GL_TEXTURE16);
  PY_DICT_ADD_INT(GL_TEXTURE17);
  PY_DICT_ADD_INT(GL_TEXTURE18);
  PY_DICT_ADD_INT(GL_TEXTURE19);
  PY_DICT_ADD_INT(GL_TEXTURE2);
  PY_DICT_ADD_INT(GL_TEXTURE20);
  PY_DICT_ADD_INT(GL_TEXTURE21);
  PY_DICT_ADD_INT(GL_TEXTURE22);
  PY_DICT_ADD_INT(GL_TEXTURE23);
  PY_DICT_ADD_INT(GL_TEXTURE24);
  PY_DICT_ADD_INT(GL_TEXTURE25);
  PY_DICT_ADD_INT(GL_TEXTURE26);
  PY_DICT_ADD_INT(GL_TEXTURE27);
  PY_DICT_ADD_INT(GL_TEXTURE28);
  PY_DICT_ADD_INT(GL_TEXTURE29);
  PY_DICT_ADD_INT(GL_TEXTURE3);
  PY_DICT_ADD_INT(GL_TEXTURE30);
  PY_DICT_ADD_INT(GL_TEXTURE31);
  PY_DICT_ADD_INT(GL_TEXTURE4);
  PY_DICT_ADD_INT(GL_TEXTURE5);
  PY_DICT_ADD_INT(GL_TEXTURE6);
  PY_DICT_ADD_INT(GL_TEXTURE7);
  PY_DICT_ADD_INT(GL_TEXTURE8);
  PY_DICT_ADD_INT(GL_TEXTURE9);
  PY_DICT_ADD_INT(GL_TEXTURE_BINDING_CUBE_MAP);
  PY_DICT_ADD_INT(GL_TEXTURE_COMPRESSED);
  PY_DICT_ADD_INT(GL_TEXTURE_COMPRESSED_IMAGE_SIZE);
  PY_DICT_ADD_INT(GL_TEXTURE_COMPRESSION_HINT);
  PY_DICT_ADD_INT(GL_TEXTURE_CUBE_MAP);
  PY_DICT_ADD_INT(GL_TEXTURE_CUBE_MAP_NEGATIVE_X);
  PY_DICT_ADD_INT(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y);
  PY_DICT_ADD_INT(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z);
  PY_DICT_ADD_INT(GL_TEXTURE_CUBE_MAP_POSITIVE_X);
  PY_DICT_ADD_INT(GL_TEXTURE_CUBE_MAP_POSITIVE_Y);
  PY_DICT_ADD_INT(GL_TEXTURE_CUBE_MAP_POSITIVE_Z);
}
static void init_bgl_version_1_4_constants(PyObject *dict)
{
  /* GL_VERSION_1_4 */
  PY_DICT_ADD_INT(GL_BLEND_DST_ALPHA);
  PY_DICT_ADD_INT(GL_BLEND_DST_RGB);
  PY_DICT_ADD_INT(GL_BLEND_SRC_ALPHA);
  PY_DICT_ADD_INT(GL_BLEND_SRC_RGB);
  PY_DICT_ADD_INT(GL_CONSTANT_ALPHA);
  PY_DICT_ADD_INT(GL_CONSTANT_COLOR);
  PY_DICT_ADD_INT(GL_DECR_WRAP);
  PY_DICT_ADD_INT(GL_DEPTH_COMPONENT16);
  PY_DICT_ADD_INT(GL_DEPTH_COMPONENT24);
  PY_DICT_ADD_INT(GL_DEPTH_COMPONENT32);
  PY_DICT_ADD_INT(GL_FUNC_ADD);
  PY_DICT_ADD_INT(GL_FUNC_REVERSE_SUBTRACT);
  PY_DICT_ADD_INT(GL_FUNC_SUBTRACT);
  PY_DICT_ADD_INT(GL_INCR_WRAP);
  PY_DICT_ADD_INT(GL_MAX);
  PY_DICT_ADD_INT(GL_MAX_TEXTURE_LOD_BIAS);
  PY_DICT_ADD_INT(GL_MIN);
  PY_DICT_ADD_INT(GL_MIRRORED_REPEAT);
  PY_DICT_ADD_INT(GL_ONE_MINUS_CONSTANT_ALPHA);
  PY_DICT_ADD_INT(GL_ONE_MINUS_CONSTANT_COLOR);
  PY_DICT_ADD_INT(GL_POINT_FADE_THRESHOLD_SIZE);
  PY_DICT_ADD_INT(GL_TEXTURE_COMPARE_FUNC);
  PY_DICT_ADD_INT(GL_TEXTURE_COMPARE_MODE);
  PY_DICT_ADD_INT(GL_TEXTURE_DEPTH_SIZE);
  PY_DICT_ADD_INT(GL_TEXTURE_LOD_BIAS);
}
static void init_bgl_version_1_5_constants(PyObject *dict)
{
  /* GL_VERSION_1_5 */
  PY_DICT_ADD_INT(GL_ARRAY_BUFFER);
  PY_DICT_ADD_INT(GL_ARRAY_BUFFER_BINDING);
  PY_DICT_ADD_INT(GL_BUFFER_ACCESS);
  PY_DICT_ADD_INT(GL_BUFFER_MAPPED);
  PY_DICT_ADD_INT(GL_BUFFER_MAP_POINTER);
  PY_DICT_ADD_INT(GL_BUFFER_SIZE);
  PY_DICT_ADD_INT(GL_BUFFER_USAGE);
  PY_DICT_ADD_INT(GL_CURRENT_QUERY);
  PY_DICT_ADD_INT(GL_DYNAMIC_COPY);
  PY_DICT_ADD_INT(GL_DYNAMIC_DRAW);
  PY_DICT_ADD_INT(GL_DYNAMIC_READ);
  PY_DICT_ADD_INT(GL_ELEMENT_ARRAY_BUFFER);
  PY_DICT_ADD_INT(GL_ELEMENT_ARRAY_BUFFER_BINDING);
  PY_DICT_ADD_INT(GL_QUERY_COUNTER_BITS);
  PY_DICT_ADD_INT(GL_QUERY_RESULT);
  PY_DICT_ADD_INT(GL_QUERY_RESULT_AVAILABLE);
  PY_DICT_ADD_INT(GL_READ_ONLY);
  PY_DICT_ADD_INT(GL_READ_WRITE);
  PY_DICT_ADD_INT(GL_SAMPLES_PASSED);
  PY_DICT_ADD_INT(GL_STATIC_COPY);
  PY_DICT_ADD_INT(GL_STATIC_DRAW);
  PY_DICT_ADD_INT(GL_STATIC_READ);
  PY_DICT_ADD_INT(GL_STREAM_COPY);
  PY_DICT_ADD_INT(GL_STREAM_DRAW);
  PY_DICT_ADD_INT(GL_STREAM_READ);
  PY_DICT_ADD_INT(GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING);
  PY_DICT_ADD_INT(GL_WRITE_ONLY);
}
static void init_bgl_version_2_0_constants(PyObject *dict)
{
  /* GL_VERSION_2_0 */
  PY_DICT_ADD_INT(GL_ACTIVE_ATTRIBUTES);
  PY_DICT_ADD_INT(GL_ACTIVE_ATTRIBUTE_MAX_LENGTH);
  PY_DICT_ADD_INT(GL_ACTIVE_UNIFORMS);
  PY_DICT_ADD_INT(GL_ACTIVE_UNIFORM_MAX_LENGTH);
  PY_DICT_ADD_INT(GL_ATTACHED_SHADERS);
  PY_DICT_ADD_INT(GL_BLEND_EQUATION_ALPHA);
  PY_DICT_ADD_INT(GL_BLEND_EQUATION_RGB);
  PY_DICT_ADD_INT(GL_BOOL);
  PY_DICT_ADD_INT(GL_BOOL_VEC2);
  PY_DICT_ADD_INT(GL_BOOL_VEC3);
  PY_DICT_ADD_INT(GL_BOOL_VEC4);
  PY_DICT_ADD_INT(GL_COMPILE_STATUS);
  PY_DICT_ADD_INT(GL_CURRENT_PROGRAM);
  PY_DICT_ADD_INT(GL_CURRENT_VERTEX_ATTRIB);
  PY_DICT_ADD_INT(GL_DELETE_STATUS);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER0);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER1);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER10);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER11);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER12);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER13);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER14);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER15);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER2);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER3);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER4);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER5);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER6);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER7);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER8);
  PY_DICT_ADD_INT(GL_DRAW_BUFFER9);
  PY_DICT_ADD_INT(GL_FLOAT_MAT2);
  PY_DICT_ADD_INT(GL_FLOAT_MAT3);
  PY_DICT_ADD_INT(GL_FLOAT_MAT4);
  PY_DICT_ADD_INT(GL_FLOAT_VEC2);
  PY_DICT_ADD_INT(GL_FLOAT_VEC3);
  PY_DICT_ADD_INT(GL_FLOAT_VEC4);
  PY_DICT_ADD_INT(GL_FRAGMENT_SHADER);
  PY_DICT_ADD_INT(GL_FRAGMENT_SHADER_DERIVATIVE_HINT);
  PY_DICT_ADD_INT(GL_INFO_LOG_LENGTH);
  PY_DICT_ADD_INT(GL_INT_VEC2);
  PY_DICT_ADD_INT(GL_INT_VEC3);
  PY_DICT_ADD_INT(GL_INT_VEC4);
  PY_DICT_ADD_INT(GL_LINK_STATUS);
  PY_DICT_ADD_INT(GL_LOWER_LEFT);
  PY_DICT_ADD_INT(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS);
  PY_DICT_ADD_INT(GL_MAX_DRAW_BUFFERS);
  PY_DICT_ADD_INT(GL_MAX_FRAGMENT_UNIFORM_COMPONENTS);
  PY_DICT_ADD_INT(GL_MAX_TEXTURE_IMAGE_UNITS);
  PY_DICT_ADD_INT(GL_MAX_VARYING_FLOATS);
  PY_DICT_ADD_INT(GL_MAX_VERTEX_ATTRIBS);
  PY_DICT_ADD_INT(GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS);
  PY_DICT_ADD_INT(GL_MAX_VERTEX_UNIFORM_COMPONENTS);
  PY_DICT_ADD_INT(GL_POINT_SPRITE_COORD_ORIGIN);
  PY_DICT_ADD_INT(GL_SAMPLER_1D);
  PY_DICT_ADD_INT(GL_SAMPLER_1D_SHADOW);
  PY_DICT_ADD_INT(GL_SAMPLER_2D);
  PY_DICT_ADD_INT(GL_SAMPLER_2D_SHADOW);
  PY_DICT_ADD_INT(GL_SAMPLER_3D);
  PY_DICT_ADD_INT(GL_SAMPLER_CUBE);
  PY_DICT_ADD_INT(GL_SHADER_SOURCE_LENGTH);
  PY_DICT_ADD_INT(GL_SHADER_TYPE);
  PY_DICT_ADD_INT(GL_SHADING_LANGUAGE_VERSION);
  PY_DICT_ADD_INT(GL_STENCIL_BACK_FAIL);
  PY_DICT_ADD_INT(GL_STENCIL_BACK_FUNC);
  PY_DICT_ADD_INT(GL_STENCIL_BACK_PASS_DEPTH_FAIL);
  PY_DICT_ADD_INT(GL_STENCIL_BACK_PASS_DEPTH_PASS);
  PY_DICT_ADD_INT(GL_STENCIL_BACK_REF);
  PY_DICT_ADD_INT(GL_STENCIL_BACK_VALUE_MASK);
  PY_DICT_ADD_INT(GL_STENCIL_BACK_WRITEMASK);
  PY_DICT_ADD_INT(GL_UPPER_LEFT);
  PY_DICT_ADD_INT(GL_VALIDATE_STATUS);
  PY_DICT_ADD_INT(GL_VERTEX_ATTRIB_ARRAY_ENABLED);
  PY_DICT_ADD_INT(GL_VERTEX_ATTRIB_ARRAY_NORMALIZED);
  PY_DICT_ADD_INT(GL_VERTEX_ATTRIB_ARRAY_POINTER);
  PY_DICT_ADD_INT(GL_VERTEX_ATTRIB_ARRAY_SIZE);
  PY_DICT_ADD_INT(GL_VERTEX_ATTRIB_ARRAY_STRIDE);
  PY_DICT_ADD_INT(GL_VERTEX_ATTRIB_ARRAY_TYPE);
  PY_DICT_ADD_INT(GL_VERTEX_PROGRAM_POINT_SIZE);
  PY_DICT_ADD_INT(GL_VERTEX_SHADER);
}
static void init_bgl_version_2_1_constants(PyObject *dict)
{
  /* GL_VERSION_2_1 */
  PY_DICT_ADD_INT(GL_COMPRESSED_SRGB);
  PY_DICT_ADD_INT(GL_COMPRESSED_SRGB_ALPHA);
  PY_DICT_ADD_INT(GL_FLOAT_MAT2x3);
  PY_DICT_ADD_INT(GL_FLOAT_MAT2x4);
  PY_DICT_ADD_INT(GL_FLOAT_MAT3x2);
  PY_DICT_ADD_INT(GL_FLOAT_MAT3x4);
  PY_DICT_ADD_INT(GL_FLOAT_MAT4x2);
  PY_DICT_ADD_INT(GL_FLOAT_MAT4x3);
  PY_DICT_ADD_INT(GL_PIXEL_PACK_BUFFER);
  PY_DICT_ADD_INT(GL_PIXEL_PACK_BUFFER_BINDING);
  PY_DICT_ADD_INT(GL_PIXEL_UNPACK_BUFFER);
  PY_DICT_ADD_INT(GL_PIXEL_UNPACK_BUFFER_BINDING);
  PY_DICT_ADD_INT(GL_SRGB);
  PY_DICT_ADD_INT(GL_SRGB8);
  PY_DICT_ADD_INT(GL_SRGB8_ALPHA8);
  PY_DICT_ADD_INT(GL_SRGB_ALPHA);
}
static void init_bgl_version_3_0_constants(PyObject *dict)
{
  /* GL_VERSION_3_0 */
  PY_DICT_ADD_INT(GL_BGRA_INTEGER);
  PY_DICT_ADD_INT(GL_BGR_INTEGER);
  PY_DICT_ADD_INT(GL_BLUE_INTEGER);
  PY_DICT_ADD_INT(GL_BUFFER_ACCESS_FLAGS);
  PY_DICT_ADD_INT(GL_BUFFER_MAP_LENGTH);
  PY_DICT_ADD_INT(GL_BUFFER_MAP_OFFSET);
  PY_DICT_ADD_INT(GL_CLAMP_READ_COLOR);
  PY_DICT_ADD_INT(GL_CLIP_DISTANCE0);
  PY_DICT_ADD_INT(GL_CLIP_DISTANCE1);
  PY_DICT_ADD_INT(GL_CLIP_DISTANCE2);
  PY_DICT_ADD_INT(GL_CLIP_DISTANCE3);
  PY_DICT_ADD_INT(GL_CLIP_DISTANCE4);
  PY_DICT_ADD_INT(GL_CLIP_DISTANCE5);
#if 0
  PY_DICT_ADD_INT(GL_CLIP_DISTANCE6);
  PY_DICT_ADD_INT(GL_CLIP_DISTANCE7);
#endif
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT0);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT1);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT2);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT3);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT4);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT5);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT6);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT7);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT8);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT9);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT10);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT11);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT12);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT13);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT14);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT15);
#if 0
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT16);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT17);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT18);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT19);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT20);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT21);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT22);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT23);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT24);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT25);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT26);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT27);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT28);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT29);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT30);
  PY_DICT_ADD_INT(GL_COLOR_ATTACHMENT31);
#endif
  PY_DICT_ADD_INT(GL_COMPARE_REF_TO_TEXTURE);
  PY_DICT_ADD_INT(GL_COMPRESSED_RED);
  PY_DICT_ADD_INT(GL_COMPRESSED_RED_RGTC1);
  PY_DICT_ADD_INT(GL_COMPRESSED_RG);
  PY_DICT_ADD_INT(GL_COMPRESSED_RG_RGTC2);
  PY_DICT_ADD_INT(GL_COMPRESSED_SIGNED_RED_RGTC1);
  PY_DICT_ADD_INT(GL_COMPRESSED_SIGNED_RG_RGTC2);
  PY_DICT_ADD_INT(GL_CONTEXT_FLAGS);
  PY_DICT_ADD_INT(GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT);
  PY_DICT_ADD_INT(GL_DEPTH24_STENCIL8);
  PY_DICT_ADD_INT(GL_DEPTH32F_STENCIL8);
  PY_DICT_ADD_INT(GL_DEPTH_ATTACHMENT);
  PY_DICT_ADD_INT(GL_DEPTH_COMPONENT32F);
  PY_DICT_ADD_INT(GL_DEPTH_STENCIL);
  PY_DICT_ADD_INT(GL_DEPTH_STENCIL_ATTACHMENT);
  PY_DICT_ADD_INT(GL_DRAW_FRAMEBUFFER);
  PY_DICT_ADD_INT(GL_DRAW_FRAMEBUFFER_BINDING);
  PY_DICT_ADD_INT(GL_FIXED_ONLY);
  PY_DICT_ADD_INT(GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_BINDING);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_COMPLETE);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_DEFAULT);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_SRGB);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_UNDEFINED);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_UNSUPPORTED);
  PY_DICT_ADD_INT(GL_GREEN_INTEGER);
  PY_DICT_ADD_INT(GL_HALF_FLOAT);
  PY_DICT_ADD_INT(GL_INDEX);
  PY_DICT_ADD_INT(GL_INTERLEAVED_ATTRIBS);
  PY_DICT_ADD_INT(GL_INT_SAMPLER_1D);
  PY_DICT_ADD_INT(GL_INT_SAMPLER_1D_ARRAY);
  PY_DICT_ADD_INT(GL_INT_SAMPLER_2D);
  PY_DICT_ADD_INT(GL_INT_SAMPLER_2D_ARRAY);
  PY_DICT_ADD_INT(GL_INT_SAMPLER_3D);
  PY_DICT_ADD_INT(GL_INT_SAMPLER_CUBE);
  PY_DICT_ADD_INT(GL_INVALID_FRAMEBUFFER_OPERATION);
  PY_DICT_ADD_INT(GL_MAJOR_VERSION);
  PY_DICT_ADD_INT(GL_MAP_FLUSH_EXPLICIT_BIT);
  PY_DICT_ADD_INT(GL_MAP_INVALIDATE_BUFFER_BIT);
  PY_DICT_ADD_INT(GL_MAP_INVALIDATE_RANGE_BIT);
  PY_DICT_ADD_INT(GL_MAP_READ_BIT);
  PY_DICT_ADD_INT(GL_MAP_UNSYNCHRONIZED_BIT);
  PY_DICT_ADD_INT(GL_MAP_WRITE_BIT);
  PY_DICT_ADD_INT(GL_MAX_ARRAY_TEXTURE_LAYERS);
  PY_DICT_ADD_INT(GL_MAX_CLIP_DISTANCES);
  PY_DICT_ADD_INT(GL_MAX_COLOR_ATTACHMENTS);
  PY_DICT_ADD_INT(GL_MAX_PROGRAM_TEXEL_OFFSET);
  PY_DICT_ADD_INT(GL_MAX_RENDERBUFFER_SIZE);
  PY_DICT_ADD_INT(GL_MAX_SAMPLES);
  PY_DICT_ADD_INT(GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS);
  PY_DICT_ADD_INT(GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS);
  PY_DICT_ADD_INT(GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS);
  PY_DICT_ADD_INT(GL_MAX_VARYING_COMPONENTS);
  PY_DICT_ADD_INT(GL_MINOR_VERSION);
  PY_DICT_ADD_INT(GL_MIN_PROGRAM_TEXEL_OFFSET);
  PY_DICT_ADD_INT(GL_NUM_EXTENSIONS);
  PY_DICT_ADD_INT(GL_PRIMITIVES_GENERATED);
  PY_DICT_ADD_INT(GL_PROXY_TEXTURE_1D_ARRAY);
  PY_DICT_ADD_INT(GL_PROXY_TEXTURE_2D_ARRAY);
  PY_DICT_ADD_INT(GL_QUERY_BY_REGION_NO_WAIT);
  PY_DICT_ADD_INT(GL_QUERY_BY_REGION_WAIT);
  PY_DICT_ADD_INT(GL_QUERY_NO_WAIT);
  PY_DICT_ADD_INT(GL_QUERY_WAIT);
  PY_DICT_ADD_INT(GL_R11F_G11F_B10F);
  PY_DICT_ADD_INT(GL_R16);
  PY_DICT_ADD_INT(GL_R16F);
  PY_DICT_ADD_INT(GL_R16I);
  PY_DICT_ADD_INT(GL_R16UI);
  PY_DICT_ADD_INT(GL_R32F);
  PY_DICT_ADD_INT(GL_R32I);
  PY_DICT_ADD_INT(GL_R32UI);
  PY_DICT_ADD_INT(GL_R8);
  PY_DICT_ADD_INT(GL_R8I);
  PY_DICT_ADD_INT(GL_R8UI);
  PY_DICT_ADD_INT(GL_RASTERIZER_DISCARD);
  PY_DICT_ADD_INT(GL_READ_FRAMEBUFFER);
  PY_DICT_ADD_INT(GL_READ_FRAMEBUFFER_BINDING);
  PY_DICT_ADD_INT(GL_RED_INTEGER);
  PY_DICT_ADD_INT(GL_RENDERBUFFER);
  PY_DICT_ADD_INT(GL_RENDERBUFFER_ALPHA_SIZE);
  PY_DICT_ADD_INT(GL_RENDERBUFFER_BINDING);
  PY_DICT_ADD_INT(GL_RENDERBUFFER_BLUE_SIZE);
  PY_DICT_ADD_INT(GL_RENDERBUFFER_DEPTH_SIZE);
  PY_DICT_ADD_INT(GL_RENDERBUFFER_GREEN_SIZE);
  PY_DICT_ADD_INT(GL_RENDERBUFFER_HEIGHT);
  PY_DICT_ADD_INT(GL_RENDERBUFFER_INTERNAL_FORMAT);
  PY_DICT_ADD_INT(GL_RENDERBUFFER_RED_SIZE);
  PY_DICT_ADD_INT(GL_RENDERBUFFER_SAMPLES);
  PY_DICT_ADD_INT(GL_RENDERBUFFER_STENCIL_SIZE);
  PY_DICT_ADD_INT(GL_RENDERBUFFER_WIDTH);
  PY_DICT_ADD_INT(GL_RG);
  PY_DICT_ADD_INT(GL_RG16);
  PY_DICT_ADD_INT(GL_RG16F);
  PY_DICT_ADD_INT(GL_RG16I);
  PY_DICT_ADD_INT(GL_RG16UI);
  PY_DICT_ADD_INT(GL_RG32F);
  PY_DICT_ADD_INT(GL_RG32I);
  PY_DICT_ADD_INT(GL_RG32UI);
  PY_DICT_ADD_INT(GL_RG8);
  PY_DICT_ADD_INT(GL_RG8I);
  PY_DICT_ADD_INT(GL_RG8UI);
  PY_DICT_ADD_INT(GL_RGB16F);
  PY_DICT_ADD_INT(GL_RGB16I);
  PY_DICT_ADD_INT(GL_RGB16UI);
  PY_DICT_ADD_INT(GL_RGB32F);
  PY_DICT_ADD_INT(GL_RGB32I);
  PY_DICT_ADD_INT(GL_RGB32UI);
  PY_DICT_ADD_INT(GL_RGB8I);
  PY_DICT_ADD_INT(GL_RGB8UI);
  PY_DICT_ADD_INT(GL_RGB9_E5);
  PY_DICT_ADD_INT(GL_RGBA16F);
  PY_DICT_ADD_INT(GL_RGBA16I);
  PY_DICT_ADD_INT(GL_RGBA16UI);
  PY_DICT_ADD_INT(GL_RGBA32F);
  PY_DICT_ADD_INT(GL_RGBA32I);
  PY_DICT_ADD_INT(GL_RGBA32UI);
  PY_DICT_ADD_INT(GL_RGBA8I);
  PY_DICT_ADD_INT(GL_RGBA8UI);
  PY_DICT_ADD_INT(GL_RGBA_INTEGER);
  PY_DICT_ADD_INT(GL_RGB_INTEGER);
  PY_DICT_ADD_INT(GL_RG_INTEGER);
  PY_DICT_ADD_INT(GL_SAMPLER_1D_ARRAY);
  PY_DICT_ADD_INT(GL_SAMPLER_1D_ARRAY_SHADOW);
  PY_DICT_ADD_INT(GL_SAMPLER_2D_ARRAY);
  PY_DICT_ADD_INT(GL_SAMPLER_2D_ARRAY_SHADOW);
  PY_DICT_ADD_INT(GL_SAMPLER_CUBE_SHADOW);
  PY_DICT_ADD_INT(GL_SEPARATE_ATTRIBS);
  PY_DICT_ADD_INT(GL_STENCIL_ATTACHMENT);
  PY_DICT_ADD_INT(GL_STENCIL_INDEX1);
  PY_DICT_ADD_INT(GL_STENCIL_INDEX16);
  PY_DICT_ADD_INT(GL_STENCIL_INDEX4);
  PY_DICT_ADD_INT(GL_STENCIL_INDEX8);
  PY_DICT_ADD_INT(GL_TEXTURE_1D_ARRAY);
  PY_DICT_ADD_INT(GL_TEXTURE_2D_ARRAY);
  PY_DICT_ADD_INT(GL_TEXTURE_ALPHA_TYPE);
  PY_DICT_ADD_INT(GL_TEXTURE_BINDING_1D_ARRAY);
  PY_DICT_ADD_INT(GL_TEXTURE_BINDING_2D_ARRAY);
  PY_DICT_ADD_INT(GL_TEXTURE_BLUE_TYPE);
  PY_DICT_ADD_INT(GL_TEXTURE_DEPTH_TYPE);
  PY_DICT_ADD_INT(GL_TEXTURE_GREEN_TYPE);
  PY_DICT_ADD_INT(GL_TEXTURE_RED_TYPE);
  PY_DICT_ADD_INT(GL_TEXTURE_SHARED_SIZE);
  PY_DICT_ADD_INT(GL_TEXTURE_STENCIL_SIZE);
  PY_DICT_ADD_INT(GL_TRANSFORM_FEEDBACK_BUFFER);
  PY_DICT_ADD_INT(GL_TRANSFORM_FEEDBACK_BUFFER_BINDING);
  PY_DICT_ADD_INT(GL_TRANSFORM_FEEDBACK_BUFFER_MODE);
  PY_DICT_ADD_INT(GL_TRANSFORM_FEEDBACK_BUFFER_SIZE);
  PY_DICT_ADD_INT(GL_TRANSFORM_FEEDBACK_BUFFER_START);
  PY_DICT_ADD_INT(GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN);
  PY_DICT_ADD_INT(GL_TRANSFORM_FEEDBACK_VARYINGS);
  PY_DICT_ADD_INT(GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_10F_11F_11F_REV);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_24_8);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_5_9_9_9_REV);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_SAMPLER_1D);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_SAMPLER_1D_ARRAY);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_SAMPLER_2D);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_SAMPLER_2D_ARRAY);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_SAMPLER_3D);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_SAMPLER_CUBE);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_VEC2);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_VEC3);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_VEC4);
  PY_DICT_ADD_INT(GL_UNSIGNED_NORMALIZED);
  PY_DICT_ADD_INT(GL_VERTEX_ARRAY_BINDING);
  PY_DICT_ADD_INT(GL_VERTEX_ATTRIB_ARRAY_INTEGER);
}
static void init_bgl_version_3_1_constants(PyObject *dict)
{
  /* GL_VERSION_3_1 */
  PY_DICT_ADD_INT(GL_ACTIVE_UNIFORM_BLOCKS);
  PY_DICT_ADD_INT(GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH);
  PY_DICT_ADD_INT(GL_COPY_READ_BUFFER);
  PY_DICT_ADD_INT(GL_COPY_WRITE_BUFFER);
  PY_DICT_ADD_INT(GL_INT_SAMPLER_2D_RECT);
  PY_DICT_ADD_INT(GL_INT_SAMPLER_BUFFER);
  PY_DICT_ADD_INT(GL_INVALID_INDEX);
  PY_DICT_ADD_INT(GL_MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS);
  PY_DICT_ADD_INT(GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS);
  PY_DICT_ADD_INT(GL_MAX_COMBINED_UNIFORM_BLOCKS);
  PY_DICT_ADD_INT(GL_MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS);
  PY_DICT_ADD_INT(GL_MAX_FRAGMENT_UNIFORM_BLOCKS);
  PY_DICT_ADD_INT(GL_MAX_GEOMETRY_UNIFORM_BLOCKS);
  PY_DICT_ADD_INT(GL_MAX_RECTANGLE_TEXTURE_SIZE);
  PY_DICT_ADD_INT(GL_MAX_TEXTURE_BUFFER_SIZE);
  PY_DICT_ADD_INT(GL_MAX_UNIFORM_BLOCK_SIZE);
  PY_DICT_ADD_INT(GL_MAX_UNIFORM_BUFFER_BINDINGS);
  PY_DICT_ADD_INT(GL_MAX_VERTEX_UNIFORM_BLOCKS);
  PY_DICT_ADD_INT(GL_PRIMITIVE_RESTART);
  PY_DICT_ADD_INT(GL_PRIMITIVE_RESTART_INDEX);
  PY_DICT_ADD_INT(GL_PROXY_TEXTURE_RECTANGLE);
  PY_DICT_ADD_INT(GL_R16_SNORM);
  PY_DICT_ADD_INT(GL_R8_SNORM);
  PY_DICT_ADD_INT(GL_RG16_SNORM);
  PY_DICT_ADD_INT(GL_RG8_SNORM);
  PY_DICT_ADD_INT(GL_RGB16_SNORM);
  PY_DICT_ADD_INT(GL_RGB8_SNORM);
  PY_DICT_ADD_INT(GL_RGBA16_SNORM);
  PY_DICT_ADD_INT(GL_RGBA8_SNORM);
  PY_DICT_ADD_INT(GL_SAMPLER_2D_RECT);
  PY_DICT_ADD_INT(GL_SAMPLER_2D_RECT_SHADOW);
  PY_DICT_ADD_INT(GL_SAMPLER_BUFFER);
  PY_DICT_ADD_INT(GL_SIGNED_NORMALIZED);
  PY_DICT_ADD_INT(GL_TEXTURE_BINDING_BUFFER);
  PY_DICT_ADD_INT(GL_TEXTURE_BINDING_RECTANGLE);
  PY_DICT_ADD_INT(GL_TEXTURE_BUFFER);
  PY_DICT_ADD_INT(GL_TEXTURE_BUFFER_DATA_STORE_BINDING);
  PY_DICT_ADD_INT(GL_TEXTURE_RECTANGLE);
  PY_DICT_ADD_INT(GL_UNIFORM_ARRAY_STRIDE);
  PY_DICT_ADD_INT(GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS);
  PY_DICT_ADD_INT(GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES);
  PY_DICT_ADD_INT(GL_UNIFORM_BLOCK_BINDING);
  PY_DICT_ADD_INT(GL_UNIFORM_BLOCK_DATA_SIZE);
  PY_DICT_ADD_INT(GL_UNIFORM_BLOCK_INDEX);
  PY_DICT_ADD_INT(GL_UNIFORM_BLOCK_NAME_LENGTH);
  PY_DICT_ADD_INT(GL_UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER);
  PY_DICT_ADD_INT(GL_UNIFORM_BLOCK_REFERENCED_BY_GEOMETRY_SHADER);
  PY_DICT_ADD_INT(GL_UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER);
  PY_DICT_ADD_INT(GL_UNIFORM_BUFFER);
  PY_DICT_ADD_INT(GL_UNIFORM_BUFFER_BINDING);
  PY_DICT_ADD_INT(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT);
  PY_DICT_ADD_INT(GL_UNIFORM_BUFFER_SIZE);
  PY_DICT_ADD_INT(GL_UNIFORM_BUFFER_START);
  PY_DICT_ADD_INT(GL_UNIFORM_IS_ROW_MAJOR);
  PY_DICT_ADD_INT(GL_UNIFORM_MATRIX_STRIDE);
  PY_DICT_ADD_INT(GL_UNIFORM_NAME_LENGTH);
  PY_DICT_ADD_INT(GL_UNIFORM_OFFSET);
  PY_DICT_ADD_INT(GL_UNIFORM_SIZE);
  PY_DICT_ADD_INT(GL_UNIFORM_TYPE);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_SAMPLER_2D_RECT);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_SAMPLER_BUFFER);
}
static void init_bgl_version_3_2_constants(PyObject *dict)
/* GL_VERSION_3_2 */
{
  PY_DICT_ADD_INT(GL_ALREADY_SIGNALED);
  PY_DICT_ADD_INT(GL_CONDITION_SATISFIED);
  PY_DICT_ADD_INT(GL_CONTEXT_COMPATIBILITY_PROFILE_BIT);
  PY_DICT_ADD_INT(GL_CONTEXT_CORE_PROFILE_BIT);
  PY_DICT_ADD_INT(GL_CONTEXT_PROFILE_MASK);
  PY_DICT_ADD_INT(GL_DEPTH_CLAMP);
  PY_DICT_ADD_INT(GL_FIRST_VERTEX_CONVENTION);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_ATTACHMENT_LAYERED);
  PY_DICT_ADD_INT(GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS);
  PY_DICT_ADD_INT(GL_GEOMETRY_INPUT_TYPE);
  PY_DICT_ADD_INT(GL_GEOMETRY_OUTPUT_TYPE);
  PY_DICT_ADD_INT(GL_GEOMETRY_SHADER);
  PY_DICT_ADD_INT(GL_GEOMETRY_VERTICES_OUT);
  PY_DICT_ADD_INT(GL_INT_SAMPLER_2D_MULTISAMPLE);
  PY_DICT_ADD_INT(GL_INT_SAMPLER_2D_MULTISAMPLE_ARRAY);
  PY_DICT_ADD_INT(GL_LAST_VERTEX_CONVENTION);
  PY_DICT_ADD_INT(GL_LINES_ADJACENCY);
  PY_DICT_ADD_INT(GL_LINE_STRIP_ADJACENCY);
  PY_DICT_ADD_INT(GL_MAX_COLOR_TEXTURE_SAMPLES);
  PY_DICT_ADD_INT(GL_MAX_DEPTH_TEXTURE_SAMPLES);
  PY_DICT_ADD_INT(GL_MAX_FRAGMENT_INPUT_COMPONENTS);
  PY_DICT_ADD_INT(GL_MAX_GEOMETRY_INPUT_COMPONENTS);
  PY_DICT_ADD_INT(GL_MAX_GEOMETRY_OUTPUT_COMPONENTS);
  PY_DICT_ADD_INT(GL_MAX_GEOMETRY_OUTPUT_VERTICES);
  PY_DICT_ADD_INT(GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS);
  PY_DICT_ADD_INT(GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
  PY_DICT_ADD_INT(GL_MAX_GEOMETRY_UNIFORM_COMPONENTS);
  PY_DICT_ADD_INT(GL_MAX_INTEGER_SAMPLES);
  PY_DICT_ADD_INT(GL_MAX_SAMPLE_MASK_WORDS);
  PY_DICT_ADD_INT(GL_MAX_SERVER_WAIT_TIMEOUT);
  PY_DICT_ADD_INT(GL_MAX_VERTEX_OUTPUT_COMPONENTS);
  PY_DICT_ADD_INT(GL_OBJECT_TYPE);
  PY_DICT_ADD_INT(GL_PROGRAM_POINT_SIZE);
  PY_DICT_ADD_INT(GL_PROVOKING_VERTEX);
  PY_DICT_ADD_INT(GL_PROXY_TEXTURE_2D_MULTISAMPLE);
  PY_DICT_ADD_INT(GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY);
  PY_DICT_ADD_INT(GL_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION);
  PY_DICT_ADD_INT(GL_SAMPLER_2D_MULTISAMPLE);
  PY_DICT_ADD_INT(GL_SAMPLER_2D_MULTISAMPLE_ARRAY);
  PY_DICT_ADD_INT(GL_SAMPLE_MASK);
  PY_DICT_ADD_INT(GL_SAMPLE_MASK_VALUE);
  PY_DICT_ADD_INT(GL_SAMPLE_POSITION);
  PY_DICT_ADD_INT(GL_SIGNALED);
  PY_DICT_ADD_INT(GL_SYNC_CONDITION);
  PY_DICT_ADD_INT(GL_SYNC_FENCE);
  PY_DICT_ADD_INT(GL_SYNC_FLAGS);
  PY_DICT_ADD_INT(GL_SYNC_FLUSH_COMMANDS_BIT);
  PY_DICT_ADD_INT(GL_SYNC_GPU_COMMANDS_COMPLETE);
  PY_DICT_ADD_INT(GL_SYNC_STATUS);
  PY_DICT_ADD_INT(GL_TEXTURE_2D_MULTISAMPLE);
  PY_DICT_ADD_INT(GL_TEXTURE_2D_MULTISAMPLE_ARRAY);
  PY_DICT_ADD_INT(GL_TEXTURE_BINDING_2D_MULTISAMPLE);
  PY_DICT_ADD_INT(GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY);
  PY_DICT_ADD_INT(GL_TEXTURE_CUBE_MAP_SEAMLESS);
  PY_DICT_ADD_INT(GL_TEXTURE_FIXED_SAMPLE_LOCATIONS);
  PY_DICT_ADD_INT(GL_TEXTURE_SAMPLES);
  PY_DICT_ADD_INT(GL_TIMEOUT_EXPIRED);
  PY_DICT_ADD_INT64(GL_TIMEOUT_IGNORED);
  PY_DICT_ADD_INT(GL_TRIANGLES_ADJACENCY);
  PY_DICT_ADD_INT(GL_TRIANGLE_STRIP_ADJACENCY);
  PY_DICT_ADD_INT(GL_UNSIGNALED);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE);
  PY_DICT_ADD_INT(GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE_ARRAY);
  PY_DICT_ADD_INT(GL_WAIT_FAILED);
}
static void init_bgl_version_3_3_constants(PyObject *dict)
{
  /* GL_VERSION_3_3 */
  PY_DICT_ADD_INT(GL_ANY_SAMPLES_PASSED);
  PY_DICT_ADD_INT(GL_INT_2_10_10_10_REV);
  PY_DICT_ADD_INT(GL_MAX_DUAL_SOURCE_DRAW_BUFFERS);
  PY_DICT_ADD_INT(GL_ONE_MINUS_SRC1_ALPHA);
  PY_DICT_ADD_INT(GL_ONE_MINUS_SRC1_COLOR);
  PY_DICT_ADD_INT(GL_RGB10_A2UI);
  PY_DICT_ADD_INT(GL_SAMPLER_BINDING);
  PY_DICT_ADD_INT(GL_SRC1_COLOR);
  PY_DICT_ADD_INT(GL_TEXTURE_SWIZZLE_A);
  PY_DICT_ADD_INT(GL_TEXTURE_SWIZZLE_B);
  PY_DICT_ADD_INT(GL_TEXTURE_SWIZZLE_G);
  PY_DICT_ADD_INT(GL_TEXTURE_SWIZZLE_R);
  PY_DICT_ADD_INT(GL_TEXTURE_SWIZZLE_RGBA);
  PY_DICT_ADD_INT(GL_TIMESTAMP);
  PY_DICT_ADD_INT(GL_TIME_ELAPSED);
  PY_DICT_ADD_INT(GL_VERTEX_ATTRIB_ARRAY_DIVISOR);
}

PyObject *BPyInit_bgl()
{
  PyObject *submodule, *dict;
  submodule = PyModule_Create(&BGL_module_def);
  dict = PyModule_GetDict(submodule);

  if (PyType_Ready(&BGL_bufferType) < 0) {
    return nullptr; /* should never happen */
  }

/* Building as a Python module loads all modules
 * (see code comment around #PyImport_ExtendInittab usage).
 * The result of this is the `bgl` warning would always show when importing `bpy`.
 * In the case of Blender as a Python module, suppress the warning. */
#ifndef WITH_PYTHON_MODULE
  if (GPU_backend_get_type() != GPU_BACKEND_OPENGL) {
    CLOG_WARN(&LOG,
              "'bgl' imported without an OpenGL backend. Please update your add-ons to use the "
              "'gpu' module.");
  }
#else
  UNUSED_VARS(LOG);
#endif

  PyModule_AddObjectRef(submodule, "Buffer", (PyObject *)&BGL_bufferType);

  init_bgl_version_1_0_methods(submodule, dict);
  init_bgl_version_1_1_methods(submodule, dict);
  init_bgl_version_1_2_methods(submodule, dict);
  init_bgl_version_1_3_methods(submodule, dict);
  init_bgl_version_1_4_methods(submodule, dict);
  init_bgl_version_1_5_methods(submodule, dict);
  init_bgl_version_2_0_methods(submodule, dict);
  init_bgl_version_2_1_methods(submodule, dict);
  init_bgl_version_3_0_methods(submodule, dict);
  init_bgl_version_3_1_methods(submodule, dict);
  init_bgl_version_3_2_methods(submodule, dict);
  init_bgl_version_3_3_methods(submodule, dict);

  init_bgl_version_1_1_constants(dict);
  init_bgl_version_1_2_constants(dict);
  init_bgl_version_1_3_constants(dict);
  init_bgl_version_1_4_constants(dict);
  init_bgl_version_1_5_constants(dict);
  init_bgl_version_2_0_constants(dict);
  init_bgl_version_2_1_constants(dict);
  init_bgl_version_3_0_constants(dict);
  init_bgl_version_3_1_constants(dict);
  init_bgl_version_3_2_constants(dict);
  init_bgl_version_3_3_constants(dict);

  return submodule;
}

static PyObject *Method_ShaderSource(PyObject * /*self*/, PyObject *args)
{
  uint shader;
  const char *source;

  if (!PyArg_ParseTuple(args, "Is", &shader, &source)) {
    return nullptr;
  }

#ifdef WITH_OPENGL
  glShaderSource(shader, 1, (const char **)&source, nullptr);
  Py_RETURN_NONE;
#else
  bgl_no_opengl_error();
  return nullptr;
#endif
}

/** \} */
