128 lines
4.8 KiB
Python
128 lines
4.8 KiB
Python
from optparse import OptionParser
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import os
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import re
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import subprocess
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import sys
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GLXINFO_RE = re.compile(r"^(\S.*):\s*\n((?:^\s+.*\n)*)", re.MULTILINE)
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def _get_glx_extensions():
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"""Return a tuple of server, client, and effective GLX extensions"""
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glxinfo = subprocess.Popen(["glxinfo"], stdout=subprocess.PIPE)
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glxinfo_output = glxinfo.communicate()[0]
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glxinfo.wait()
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glxinfo_map = {}
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for m in GLXINFO_RE.finditer(glxinfo_output):
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glxinfo_map[m.group(1)] = m.group(2)
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server_glx_extensions = set(re.split("\s*,\s*", glxinfo_map['server glx extensions'].strip()))
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client_glx_extensions = set(re.split("\s*,\s*", glxinfo_map['client glx extensions'].strip()))
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glx_extensions = set(re.split("\s*,\s*", glxinfo_map['GLX extensions'].strip()))
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return (server_glx_extensions, client_glx_extensions, glx_extensions)
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class Launcher:
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def __init__(self):
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self.use_tfp = True
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# Figure out the path to the plugin when uninstalled
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scripts_dir = os.path.dirname(os.path.abspath(sys.argv[0]))
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top_dir = os.path.dirname(scripts_dir)
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self.plugin_dir = os.path.join(top_dir, "src")
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self.js_dir = os.path.join(top_dir, "js")
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self.data_dir = os.path.join(top_dir, "data")
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parser = OptionParser()
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parser.add_option("-g", "--debug", action="store_true",
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help="Run under a debugger")
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parser.add_option("", "--debug-command", metavar="COMMAND",
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help="Command to use for debugging (defaults to 'gdb --args')")
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parser.add_option("-v", "--verbose", action="store_true")
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self.options, args = parser.parse_args()
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if args:
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parser.print_usage()
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sys.exit(1)
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if self.options.debug_command:
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self.options.debug = True
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self.debug_command = self.options.debug_command.split()
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else:
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self.debug_command = ["gdb", "--args"]
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def set_use_tfp(self, use_tfp):
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"""Sets whether we try to use GLX_EXT_texture_for_pixmap"""
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self.use_tfp = use_tfp
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def start_shell(self):
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"""Starts gnome-shell. Returns a subprocess.Popen object"""
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use_tfp = self.use_tfp
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force_indirect = False
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# Allow disabling usage of the EXT_texture_for_pixmap extension.
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# FIXME: Move this to ClutterGlxPixmap like
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# CLUTTER_PIXMAP_TEXTURE_RECTANGLE=disable.
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if 'GNOME_SHELL_DISABLE_TFP' in os.environ and \
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os.environ['GNOME_SHELL_DISABLE_TFP'] != '':
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use_tfp = False
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if use_tfp:
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# Decide if we need to set LIBGL_ALWAYS_INDIRECT=1 to get the texture_from_pixmap
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# extension; we take having the extension be supported on both the client and
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# server but not in the list of effective extensions as a signal of needing
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# to force indirect rendering.
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#
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# (The Xepyhr DRI support confuses this heuristic but we disable TFP in
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# start-in-Xepyhr)
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#
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(server_glx_extensions, client_glx_extensions, glx_extensions) = _get_glx_extensions()
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if ("GLX_EXT_texture_from_pixmap" in server_glx_extensions and
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"GLX_EXT_texture_from_pixmap" in client_glx_extensions and
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(not "GLX_EXT_texture_from_pixmap" in glx_extensions)):
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force_indirect = True
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# Now launch metacity-clutter with our plugin
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env=dict(os.environ)
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env.update({'GNOME_SHELL_JS' : self.js_dir,
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'GNOME_SHELL_DATADIR' : self.data_dir,
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'GI_TYPELIB_PATH' : self.plugin_dir,
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'LD_LIBRARY_PATH' : os.environ.get('LD_LIBRARY_PATH', '') + ':' + self.plugin_dir,
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'GNOME_DISABLE_CRASH_DIALOG' : '1'})
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if force_indirect:
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if self.options.verbose:
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print "Forcing indirect GL"
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# This is Mesa specific; the NVIDIA proprietary drivers drivers use
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# __GL_FORCE_INDIRECT=1 instead. But we don't need to force indirect
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# rendering for NVIDIA.
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env['LIBGL_ALWAYS_INDIRECT'] = '1'
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if not self.options.verbose:
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# Unless verbose() is specified, only let gjs show errors and things that are
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# explicitly logged via log() from javascript
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env['GJS_DEBUG_TOPICS'] = 'JS ERROR;JS LOG'
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if self.options.debug:
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args = list(self.debug_command)
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else:
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args = []
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plugin = os.path.join(self.plugin_dir, "libgnome-shell.la")
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args.extend(['metacity', '--mutter-plugins=' + plugin, '--replace'])
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return subprocess.Popen(args, env=env)
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def is_verbose (self):
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"""Returns whether the Launcher was started in verbose mode"""
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return self.options.verbose
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