def _get_egl_func(func_name, res_type, *arg_types):
address = egl.eglGetProcAddress(func_name)
if address is None:
return None
proto = ctypes.CFUNCTYPE(res_type)
proto.argtypes = arg_types
func = proto(address)
return func
def define_egl_ext_function(func_name, res_type, *arg_types):
if hasattr(egl, func_name):
return # function already exists
addr = egl.eglGetProcAddress(func_name)
if addr is None:
return # function is not available
else:
proto = ctypes.CFUNCTYPE(res_type)
proto.argtypes = arg_types
globals()['proto__' + func_name] = proto # avoid garbage collection
func = proto(addr)
setattr(egl, func_name, func)
def gl_get_proc(self, proc):
"""This function is used to get a pointer to an OpenGL extension
function. This is only necessary on the Windows platform, because the
OpenGL implementation shipped with Windows only supports OpenGL
version 1.1.
PROTOTYPE:
void * VidExt_GL_GetProcAddress(const char* Proc)"""
address = egl.eglGetProcAddress(proc)
if address is not None:
return address
else:
log.error(f"Vidext: gl_get_proc({proc.decode()}) returns None")
def define_egl_ext_function(func_name, res_type, *arg_types):
if hasattr(egl, func_name):
return # function already exists
addr = egl.eglGetProcAddress(func_name)
if addr is None:
return # function is not available
else:
proto = ctypes.CFUNCTYPE(res_type)
proto.argtypes = arg_types
globals()['proto__' + func_name] = proto # avoid garbage collection
func = proto(addr)
setattr(egl, func_name, func)
pass
# pylint: disable=g-import-not-at-top
from OpenGL import EGL
from OpenGL import error
from six.moves import range
# From the EGL_EXT_device_enumeration extension.
EGLDeviceEXT = ctypes.c_void_p
PFNEGLQUERYDEVICESEXTPROC = ctypes.CFUNCTYPE(EGL.EGLBoolean, EGL.EGLint,
ctypes.POINTER(EGLDeviceEXT),
ctypes.POINTER(EGL.EGLint))
try:
_eglQueryDevicesEXT = PFNEGLQUERYDEVICESEXTPROC( # pylint: disable=invalid-name
EGL.eglGetProcAddress('eglQueryDevicesEXT'))
except TypeError:
raise ImportError('eglQueryDevicesEXT is not available.')
# From the EGL_EXT_platform_device extension.
EGL_PLATFORM_DEVICE_EXT = 0x313F
PFNEGLGETPLATFORMDISPLAYEXTPROC = ctypes.CFUNCTYPE(EGL.EGLDisplay, EGL.EGLenum,
ctypes.c_void_p,
ctypes.POINTER(EGL.EGLint))
try:
eglGetPlatformDisplayEXT = PFNEGLGETPLATFORMDISPLAYEXTPROC( # pylint: disable=invalid-name
EGL.eglGetProcAddress('eglGetPlatformDisplayEXT'))
except TypeError:
raise ImportError('eglGetPlatformDisplayEXT is not available.')
def get_proc_address(self, s):
return egl.eglGetProcAddress(s)
def get_proc_address(self, s):
return egl.eglGetProcAddress(s)