/usr/lib/python2.7/dist-packages/xpra/client/gl/gl_check.py is in xpra 0.15.8+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# This file is part of Xpra.
# Copyright (C) 2012 Serviware (Arthur Huillet, <ahuillet@serviware.com>)
# Copyright (C) 2012-2014 Antoine Martin <antoine@devloop.org.uk>
# Xpra is released under the terms of the GNU GPL v2, or, at your option, any
# later version. See the file COPYING for details.
import sys, os
import logging
from xpra.log import Logger, CaptureHandler
log = Logger("opengl")
required_extensions = ["GL_ARB_texture_rectangle", "GL_ARB_vertex_program"]
WHITELIST = {}
GREYLIST = {}
BLACKLIST = {"vendor" : ["nouveau", "Humper", "VMware, Inc."],
"renderer" : ["Software Rasterizer"]}
if False:
#for testing:
BLACKLIST["vendor"].append("NVIDIA Corporation")
WHITELIST["renderer"] = ["GeForce GTX 760/PCIe/SSE2"]
if sys.platform.startswith("darwin") or sys.platform.startswith("win"):
#crashes were reported with the Intel driver on OSX and win32:
GREYLIST.setdefault("vendor", []).append("Intel Inc.")
if sys.platform.startswith("darwin"):
#frequent crashes on osx with GT 650M: (see ticket #808)
GREYLIST.setdefault("vendor", []).append("NVIDIA Corporation")
#alpha requires gtk3 or *nix only for gtk2:
DEFAULT_ALPHA = sys.version>'3' or (not sys.platform.startswith("win") and not sys.platform.startswith("darwin"))
GL_ALPHA_SUPPORTED = os.environ.get("XPRA_ALPHA", DEFAULT_ALPHA) in (True, "1")
#not working with gtk3 yet?
CAN_DOUBLE_BUFFER = True
#needed on win32?:
DEFAULT_DOUBLE_BUFFERED = sys.platform.startswith("win") and CAN_DOUBLE_BUFFER
DOUBLE_BUFFERED = os.environ.get("XPRA_OPENGL_DOUBLE_BUFFERED", str(int(DEFAULT_DOUBLE_BUFFERED)))=="1"
def get_visual_name(visual):
from xpra.gtk_common.gtk_util import STATIC_GRAY, GRAYSCALE, STATIC_COLOR, PSEUDO_COLOR, TRUE_COLOR, DIRECT_COLOR
if not visual:
return ""
return {
STATIC_GRAY : "STATIC_GRAY",
GRAYSCALE : "GRAYSCALE",
STATIC_COLOR : "STATIC_COLOR",
PSEUDO_COLOR : "PSEUDO_COLOR",
TRUE_COLOR : "TRUE_COLOR",
DIRECT_COLOR : "DIRECT_COLOR"}.get(visual.type, "unknown")
def get_visual_byte_order(visual):
from xpra.gtk_common.gtk_util import LSB_FIRST, MSB_FIRST
if not visual:
return ""
return {
LSB_FIRST : "LSB",
MSB_FIRST : "MSB"}.get(visual.byte_order, "unknown")
def visual_to_str(visual):
if not visual:
return ""
d = {"type" : get_visual_name(visual),
"byte_order" : get_visual_byte_order(visual)}
for k in ("bits_per_rgb", "depth"):
d[k] = getattr(visual, k)
return str(d)
def get_DISPLAY_MODE(want_alpha=GL_ALPHA_SUPPORTED):
from xpra.client.gl.gtk_compat import MODE_RGBA, MODE_ALPHA, MODE_RGB, MODE_DOUBLE, MODE_SINGLE
#MODE_DEPTH
if want_alpha:
mode = MODE_RGBA | MODE_ALPHA
else:
mode = MODE_RGB
if DOUBLE_BUFFERED:
mode = mode | MODE_DOUBLE
else:
mode = mode | MODE_SINGLE
return mode
def get_MODE_names(mode):
from xpra.client.gl.gtk_compat import MODE_RGB, MODE_RGBA, MODE_ALPHA, MODE_DEPTH, MODE_DOUBLE, MODE_SINGLE
friendly_mode_names = {MODE_RGB : "RGB",
MODE_RGBA : "RGBA",
MODE_ALPHA : "ALPHA",
MODE_DEPTH : "DEPTH",
MODE_DOUBLE : "DOUBLE",
MODE_SINGLE : "SINGLE"}
friendly_modes = [v for k,v in friendly_mode_names.items() if k>0 and (k&mode)==k]
#special case for single (value is zero!)
if not (mode&MODE_DOUBLE==MODE_DOUBLE):
friendly_modes.append("SINGLE")
return friendly_modes
#by default, we raise an ImportError as soon as we find something missing:
def raise_error(msg):
raise ImportError(msg)
gl_check_error = raise_error
#support for memory views requires Python 2.7 and PyOpenGL 3.1
def is_pyopengl_memoryview_safe(pyopengl_version):
if sys.version_info[:2]<(2,7):
#memoryview type requires python 2.7
return False
vsplit = pyopengl_version.split('.')
if vsplit[:2]<['3','1']:
#requires PyOpenGL >= 3.1, earlier versions will not work
return False
if vsplit[:2]>=['3','2']:
#assume that newer versions are OK too
return True
#at this point, we know we have a 3.1.x version, but which one?
if len(vsplit)<3:
#not enough parts to know for sure, assume it's not supported
return False
micro = vsplit[2]
#ie: '0', '1' or '0b2'
if micro=='0':
return True #3.1.0 is OK
if micro>='1':
return True #3.1.1 onwards should be too
return False #probably something like '0b2' which is broken
def check_functions(*functions):
missing = []
available = []
for x in functions:
try:
name = x.__name__
except:
name = str(x)
if not bool(x):
missing.append(name)
else:
available.append(name)
if len(missing)>0:
gl_check_error("some required OpenGL functions are not available: %s" % (", ".join(missing)))
else:
log("All the required OpenGL functions are available: %s " % (", ".join(available)))
#sanity checks: OpenGL version and fragment program support:
def check_GL_support(widget, force_enable=False):
from xpra.client.gl.gtk_compat import GLContextManager
with GLContextManager(widget):
return do_check_GL_support(force_enable)
def do_check_GL_support(force_enable):
props = {}
try:
#log redirection:
def redirect_log(logger_name):
logger = logging.getLogger(logger_name)
assert logger is not None
logger.saved_handlers = logger.handlers
logger.saved_propagate = logger.propagate
logger.handlers = [CaptureHandler()]
logger.propagate = 0
return logger
fhlogger = redirect_log('OpenGL.formathandler')
elogger = redirect_log('OpenGL.extensions')
alogger = redirect_log('OpenGL.acceleratesupport')
arlogger = redirect_log('OpenGL.arrays')
clogger = redirect_log('OpenGL.converters')
import OpenGL
props["pyopengl"] = OpenGL.__version__
from OpenGL.GL import GL_VERSION, GL_EXTENSIONS
from OpenGL.GL import glGetString, glGetInteger
gl_version_str = glGetString(GL_VERSION)
if gl_version_str is None:
gl_check_error("OpenGL version is missing - cannot continue")
return {}
gl_major = int(gl_version_str[0])
gl_minor = int(gl_version_str[2])
props["opengl"] = gl_major, gl_minor
MIN_VERSION = (1,1)
if (gl_major, gl_minor) < MIN_VERSION:
gl_check_error("OpenGL output requires version %s or greater, not %s.%s" %
(".".join([str(x) for x in MIN_VERSION]), gl_major, gl_minor))
else:
log("found valid OpenGL version: %s.%s", gl_major, gl_minor)
from OpenGL import version as OpenGL_version
try:
import OpenGL_accelerate
except:
OpenGL_accelerate = None
props["zerocopy"] = is_pyopengl_memoryview_safe(OpenGL_version.__version__) and bool(OpenGL_accelerate)
try:
extensions = glGetString(GL_EXTENSIONS).decode().split(" ")
except:
log("error querying extensions", exc_info=True)
extensions = []
gl_check_error("OpenGL could not find the list of GL extensions - does the graphics driver support OpenGL?")
log("OpenGL extensions found: %s", ", ".join(extensions))
props["extensions"] = extensions
from OpenGL.arrays.arraydatatype import ArrayDatatype
try:
log("found the following array handlers: %s", set(ArrayDatatype.getRegistry().values()))
except:
pass
from OpenGL.GL import GL_RENDERER, GL_VENDOR, GL_SHADING_LANGUAGE_VERSION
for d,s,fatal in (("vendor", GL_VENDOR, True),
("renderer", GL_RENDERER, True),
("shading language version", GL_SHADING_LANGUAGE_VERSION, False)):
try:
v = glGetString(s)
v = v.decode()
log("%s: %s", d, v)
except:
if fatal:
gl_check_error("OpenGL property '%s' is missing" % d)
else:
log("OpenGL property '%s' is missing", d)
v = ""
props[d] = v
from OpenGL.GLU import gluGetString, GLU_VERSION, GLU_EXTENSIONS
for d,s in {"GLU version": GLU_VERSION, "GLU extensions":GLU_EXTENSIONS}.items():
v = gluGetString(s)
v = v.decode()
log("%s: %s", d, v)
props[d] = v
blacklisted = None
whitelisted = None
greylisted = None
for k,vlist in BLACKLIST.items():
v = props.get(k)
if v in vlist:
log("%s '%s' found in blacklist: %s", k, v, vlist)
blacklisted = k, v
for k,vlist in GREYLIST.items():
v = props.get(k)
if v in vlist:
log("%s '%s' found in greylist: %s", k, v, vlist)
greylisted = k, v
for k,vlist in WHITELIST.items():
v = props.get(k)
if v in vlist:
log("%s '%s' found in whitelist: %s", k, v, vlist)
whitelisted = k, v
if blacklisted:
if whitelisted:
log.info("%s '%s' enabled (found in both blacklist and whitelist)", *whitelisted)
elif force_enable:
log.warn("Warning: %s '%s' is blacklisted!", *blacklisted)
else:
gl_check_error("%s '%s' is blacklisted!" % (blacklisted))
safe = bool(whitelisted) or not (bool(greylisted) or bool(blacklisted))
if safe and sys.version_info[0]>2:
log.warn("Warning: OpenGL python3 support is not enabled by default")
safe = False
props["safe"] = safe
#check for specific functions we need:
from OpenGL.GL import glActiveTexture, glTexSubImage2D, glTexCoord2i, \
glViewport, glMatrixMode, glLoadIdentity, glOrtho, \
glEnableClientState, glGenTextures, glDisable, \
glBindTexture, glPixelStorei, glEnable, glBegin, glFlush, \
glTexParameteri, glTexEnvi, glHint, glBlendFunc, glLineStipple, \
glTexImage2D, \
glMultiTexCoord2i, \
glVertex2i, glEnd
check_functions(glActiveTexture, glTexSubImage2D, glTexCoord2i, \
glViewport, glMatrixMode, glLoadIdentity, glOrtho, \
glEnableClientState, glGenTextures, glDisable, \
glBindTexture, glPixelStorei, glEnable, glBegin, glFlush, \
glTexParameteri, glTexEnvi, glHint, glBlendFunc, glLineStipple, \
glTexImage2D, \
glMultiTexCoord2i, \
glVertex2i, glEnd)
glEnablei = None
try:
from OpenGL.GL import glEnablei
except:
pass
if not bool(glEnablei):
log.warn("OpenGL glEnablei is not available, disabling transparency")
global GL_ALPHA_SUPPORTED
GL_ALPHA_SUPPORTED = False
#check for framebuffer functions we need:
from OpenGL.GL.ARB.framebuffer_object import GL_FRAMEBUFFER, \
GL_COLOR_ATTACHMENT0, glGenFramebuffers, glBindFramebuffer, glFramebufferTexture2D
check_functions(GL_FRAMEBUFFER, \
GL_COLOR_ATTACHMENT0, glGenFramebuffers, glBindFramebuffer, glFramebufferTexture2D)
for ext in required_extensions:
if ext not in extensions:
gl_check_error("OpenGL driver lacks support for extension: %s" % ext)
else:
log("Extension %s is present", ext)
#this allows us to do CSC via OpenGL:
#see http://www.opengl.org/registry/specs/ARB/fragment_program.txt
from OpenGL.GL.ARB.fragment_program import glInitFragmentProgramARB
if not glInitFragmentProgramARB():
gl_check_error("OpenGL output requires glInitFragmentProgramARB")
else:
log("glInitFragmentProgramARB works")
from OpenGL.GL.ARB.texture_rectangle import glInitTextureRectangleARB
if not glInitTextureRectangleARB():
gl_check_error("OpenGL output requires glInitTextureRectangleARB")
else:
log("glInitTextureRectangleARB works")
from OpenGL.GL.ARB.vertex_program import glGenProgramsARB, glDeleteProgramsARB, \
glBindProgramARB, glProgramStringARB
check_functions(glGenProgramsARB, glDeleteProgramsARB, glBindProgramARB, glProgramStringARB)
try:
from OpenGL.GL import GL_MAX_TEXTURE_SIZE
texture_size = glGetInteger(GL_MAX_TEXTURE_SIZE)
#this one may be missing?
rect_texture_size = texture_size
try:
from OpenGL.GL import GL_MAX_RECTANGLE_TEXTURE_SIZE
rect_texture_size = glGetInteger(GL_MAX_RECTANGLE_TEXTURE_SIZE)
except ImportError as e:
log("OpenGL: %s", e)
log("using GL_MAX_TEXTURE_SIZE=%s as default", texture_size)
except Exception as e:
emsg = str(e)
if hasattr(e, "description"):
emsg = e.description
gl_check_error("unable to query max texture size: %s" % emsg)
return props
log("Texture size GL_MAX_RECTANGLE_TEXTURE_SIZE=%s, GL_MAX_TEXTURE_SIZE=%s", rect_texture_size, texture_size)
props["texture-size-limit"] = min(rect_texture_size, texture_size)
return props
finally:
for x in alogger.handlers[0].records:
#strip default message prefix:
msg = x.getMessage().replace("No OpenGL_accelerate module loaded: ", "")
if msg=="No module named OpenGL_accelerate":
msg = "missing accelerate module"
if msg!="OpenGL_accelerate module loaded":
msg = "PyOpenGL warning: %s" % msg
log.info(msg)
#format handler messages:
STRIP_LOG_MESSAGE = "Unable to load registered array format handler "
missing_handlers = []
for x in fhlogger.handlers[0].records:
msg = x.getMessage()
p = msg.find(STRIP_LOG_MESSAGE)
if p<0:
#unknown message, log it:
log.info(msg)
continue
format_handler = msg[p+len(STRIP_LOG_MESSAGE):]
p = format_handler.find(":")
if p>0:
format_handler = format_handler[:p]
missing_handlers.append(format_handler)
if len(missing_handlers)>0:
log.warn("PyOpenGL warning: missing array format handlers: %s", ", ".join(missing_handlers))
for x in elogger.handlers[0].records:
msg = x.getMessage()
#ignore extension messages:
p = msg.startswith("GL Extension ") and msg.endswith("available")
if not p:
log.info(msg)
missing_accelerators = []
STRIP_AR_HEAD = "Unable to load"
STRIP_AR_TAIL = "from OpenGL_accelerate"
for x in arlogger.handlers[0].records+clogger.handlers[0].records:
msg = x.getMessage()
if msg.startswith(STRIP_AR_HEAD) and msg.endswith(STRIP_AR_TAIL):
m = msg[len(STRIP_AR_HEAD):-len(STRIP_AR_TAIL)].strip()
m = m.replace("accelerators", "").replace("accelerator", "").strip()
missing_accelerators.append(m)
continue
log.info(msg)
if missing_accelerators:
log.info("OpenGL accelerate missing: %s", ", ".join(missing_accelerators))
def restore_logger(logger):
logger.handlers = logger.saved_handlers
logger.propagate = logger.saved_propagate
restore_logger(fhlogger)
restore_logger(elogger)
restore_logger(alogger)
restore_logger(arlogger)
restore_logger(clogger)
def check_support(force_enable=False, check_colormap=False):
#platform checks:
from xpra.platform.gui import gl_check
warning = gl_check()
if warning:
if force_enable:
log.warn("Warning: trying to continue despite '%s'" % warning)
else:
gl_check_error(warning)
props = {}
#this will import gtk.gtkgl / gdkgl or gi.repository.GtkGLExt / GdkGLExt:
from xpra.client.gl.gtk_compat import get_info, gdkgl, Config_new_by_mode, MODE_DOUBLE, GLDrawingArea
props.update(get_info())
display_mode = get_DISPLAY_MODE()
glconfig = Config_new_by_mode(display_mode)
if glconfig is None and CAN_DOUBLE_BUFFER:
log("trying to toggle double-buffering")
display_mode &= ~MODE_DOUBLE
glconfig = Config_new_by_mode(display_mode)
if not glconfig:
gl_check_error("cannot setup an OpenGL context")
props["display_mode"] = get_MODE_names(display_mode)
props["glconfig"] = glconfig
props["has_alpha"] = glconfig.has_alpha()
props["rgba"] = glconfig.is_rgba()
log("GL props=%s", props)
from xpra.gtk_common.gtk_util import import_gtk, gdk_window_process_all_updates
gtk = import_gtk()
assert gdkgl.query_extension()
glext, w = None, None
try:
#ugly code for win32 and others (virtualbox broken GL drivers)
#for getting a GL drawable and context: we must use a window...
#(which we do not even show on screen)
#
#here is the old simpler alternative which does not work on some platforms:
# glext = gtk.gdkgl.ext(gdk.Pixmap(gdk.get_default_root_window(), 1, 1))
# gldrawable = glext.set_gl_capability(glconfig)
# glcontext = gtk.gdkgl.Context(gldrawable, direct=True)
w = gtk.Window()
w.set_decorated(False)
vbox = gtk.VBox()
glarea = GLDrawingArea(glconfig)
glarea.set_size_request(32, 32)
vbox.add(glarea)
vbox.show_all()
w.add(vbox)
#we don't need to actually show the window!
#w.show_all()
glarea.realize()
gdk_window_process_all_updates()
gl_props = check_GL_support(glarea, force_enable)
if check_colormap:
s = w.get_screen()
for x in ("rgb_visual", "rgba_visual", "system_visual"):
try:
visual = getattr(s, "get_%s" % x)()
gl_props[x] = visual_to_str(visual)
except:
pass
#i = 0
#for v in s.list_visuals():
# gl_props["visual[%s]" % i] = visual_to_str(v)
# i += 1
finally:
if w:
w.destroy()
del glext, glconfig
props.update(gl_props)
return props
def main():
from xpra.platform import init,clean
from xpra.platform.gui import init as gui_init
from xpra.util import pver
try:
init("OpenGL-Check")
gui_init()
verbose = "-v" in sys.argv or "--verbose" in sys.argv
if verbose:
log.enable_debug()
from xpra.client.gl.gtk_compat import log as clog
clog.enable_debug()
#replace ImportError with a log message:
global gl_check_error
errors = []
def log_error(msg):
log.error("ERROR: %s", msg)
errors.append(msg)
gl_check_error = log_error
props = check_support(True, verbose)
log.info("")
if len(errors)>0:
log.info("OpenGL errors:")
for e in errors:
log.info(" %s", e)
log.info("")
log.info("OpenGL properties:")
for k in sorted(props.keys()):
v = props[k]
#skip not human readable:
if k not in ("extensions", "glconfig"):
log.info("* %s : %s", str(k).ljust(24), pver(v))
return len(errors)
finally:
clean()
if __name__ == "__main__":
sys.exit(main())
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