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# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2022, Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
from OpenGL.EGL.VERSION.EGL_1_0 import EGLNativeDisplayType, eglGetProcAddress, eglQueryString, EGL_EXTENSIONS
from OpenGL.raw.GLES2 import _types as _cs
from OpenGL.GLES2.VERSION.GLES2_2_0 import *
from OpenGL.GLES3.VERSION.GLES3_3_0 import *
from OpenGL import GL as gl
from ctypes import c_int, c_char_p, c_void_p, cdll, POINTER, util, \
pointer, CFUNCTYPE, c_bool
def getEGLNativeDisplay():
_x11lib = cdll.LoadLibrary(util.find_library('X11'))
XOpenDisplay = _x11lib.XOpenDisplay
XOpenDisplay.argtypes = [c_char_p]
XOpenDisplay.restype = POINTER(EGLNativeDisplayType)
return XOpenDisplay(None)
# Hack. PyOpenGL doesn't seem to manage to find glEGLImageTargetTexture2DOES.
def getglEGLImageTargetTexture2DOES():
funcptr = eglGetProcAddress('glEGLImageTargetTexture2DOES')
prototype = CFUNCTYPE(None, _cs.GLenum, _cs.GLeglImageOES)
return prototype(funcptr)
glEGLImageTargetTexture2DOES = getglEGLImageTargetTexture2DOES()
def get_gl_extensions():
n = GLint()
glGetIntegerv(GL_NUM_EXTENSIONS, n)
gl_extensions = []
for i in range(n.value):
gl_extensions.append(gl.glGetStringi(GL_EXTENSIONS, i).decode())
return gl_extensions
def check_gl_extensions(required_extensions):
extensions = get_gl_extensions()
if False:
print('GL EXTENSIONS: ', ' '.join(extensions))
for ext in required_extensions:
if ext not in extensions:
raise Exception(ext + ' missing')
def get_egl_extensions(egl_display):
return eglQueryString(egl_display, EGL_EXTENSIONS).decode().split(' ')
def check_egl_extensions(egl_display, required_extensions):
extensions = get_egl_extensions(egl_display)
if False:
print('EGL EXTENSIONS: ', ' '.join(extensions))
for ext in required_extensions:
if ext not in extensions:
raise Exception(ext + ' missing')
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