def tkCreateContext(self): self.__window = XOpenDisplay(self.winfo_screen().encode('utf-8')) # Check glx version: major = c_int(0) minor = c_int(0) GLX.glXQueryVersion(self.__window, major, minor) print("GLX version: %d.%d" % (major.value, minor.value)) if major.value == 1 and minor.value < 3: # e.g. 1.2 and down visual = GLX.glXChooseVisual(self.__window, 0, (GL.GLint * len(att))(*att)) if not visual: _log.error("glXChooseVisual call failed") self.__context = GLX.glXCreateContext(self.__window, visual, None, GL.GL_TRUE) GLX.glXMakeCurrent(self.__window, self._wid, self.__context) return # OUT HERE FOR 1.2 and less else: # 1.3 or higher # which screen - should it be winfo_screen instead ?? XDefaultScreen = _x11lib.XDefaultScreen XDefaultScreen.argtypes = [POINTER(Display)] XDefaultScreen.restype = c_int screen = XDefaultScreen(self.__window) print("Screen is ", screen) # Look at framebuffer configs ncfg = GL.GLint(0) cfgs = GLX.glXChooseFBConfig(self.__window, screen, (GL.GLint * len(fbatt))(*fbatt), ncfg) print("Number of FBconfigs", ncfg.value) # # Try to match to the current window # ... might also be possible to set this for the frame # ... but for now we just take what Tk gave us ideal = int(self.winfo_visualid(), 16) # convert from hex best = -1 for i in range(ncfg.value): vis = GLX.glXGetVisualFromFBConfig(self.__window, cfgs[i]) if ideal == vis.contents.visualid: best = i print("Got a matching visual: index %d %d xid %s" % (best, vis.contents.visualid, hex(ideal))) if best < 0: print("oh dear - visual does not match") # Take the first in the list (should be another I guess) best = 0 # Here we insist on RGBA - but didn't check earlier self.__context = GLX.glXCreateNewContext( self.__window, cfgs[best], GLX.GLX_RGBA_TYPE, None, # share list GL.GL_TRUE) # direct print("Is Direct?: ", GLX.glXIsDirect(self.__window, self.__context)) # Not creating another window ... some tutorials do # print("wid: ",self._wid) # self._wid = GLX.glXCreateWindow( self.__window, cfgs[best], self._wid, None) # print("wid: ",self._wid) GLX.glXMakeContextCurrent(self.__window, self._wid, self._wid, self.__context) print("Done making a first context") extensions = GLX.glXQueryExtensionsString( self.__window, screen) # Here we quit - getting a modern context needs further work below return if "GLX_ARB_create_context" in extensions: # We can try to upgrade it ?? print("Trying to upgrade context") s = "glXCreateContextAttribsARB" p = GLX.glXGetProcAddress(c_char_p(s)) print(p) if not p: p = GLX.glXGetProcAddressARB( (GL.GLubyte * len(s)).from_buffer_copy(s)) print(p) if p: print(" p is true") p.restype = GLX.GLXContext p.argtypes = [ POINTER(Display), GLX.GLXFBConfig, GLX.GLXContext, c_bool, POINTER(c_int) ] arb_attrs = fbatt[:-1] + [] # GLX.GLX_CONTEXT_MAJOR_VERSION_ARB , 3 # GLX.GLX_CONTEXT_MINOR_VERSION_ARB , 1, # 0 ] # # GLX.GLX_CONTEXT_FLAGS_ARB # GLX.GLX_CONTEXT_PROFILE_MASK_ARB #] # import pdb # pdb.set_trace() self.__context = p(self.__window, cfgs[best], None, GL.GL_TRUE, (GL.GLint * len(arb_attrs))(*arb_attrs))
def get_process_address(name): address = GLX.glXGetProcAddress(name.decode("utf-8")) return ctypes.cast(address, ctypes.c_void_p).value