--- /dev/null
+#!/usr/bin/env python
+
+# (C) Copyright IBM Corporation 2004, 2005
+# All Rights Reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# on the rights to use, copy, modify, merge, publish, distribute, sub
+# license, and/or sell copies of the Software, and to permit persons to whom
+# the Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice (including the next
+# paragraph) shall be included in all copies or substantial portions of the
+# Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+# IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+#
+# Authors:
+# Ian Romanick <idr@us.ibm.com>
+
+import gl_XML
+import license
+import sys, getopt, string
+
+
+class glx_item_factory(gl_XML.gl_item_factory):
+ """Factory to create GLX protocol oriented objects derived from gl_item."""
+
+ def create_item(self, name, element, context):
+ if name == "function":
+ return glx_function(element, context)
+ elif name == "enum":
+ return glx_enum(element, context)
+ elif name == "api":
+ return glx_api(self)
+ else:
+ return gl_XML.gl_item_factory.create_item(self, name, element, context)
+
+
+class glx_enum(gl_XML.gl_enum):
+ def __init__(self, element, context):
+ gl_XML.gl_enum.__init__(self, element, context)
+
+ self.functions = {}
+
+ child = element.children
+ while child:
+ if child.type == "element" and child.name == "size":
+ n = child.nsProp( "name", None )
+ c = child.nsProp( "count", None )
+ m = child.nsProp( "mode", None )
+
+ if not c:
+ c = self.default_count
+ else:
+ c = int(c)
+
+ if m == "get":
+ mode = 0
+ else:
+ mode = 1
+
+ if not self.functions.has_key(n):
+ self.functions[ n ] = [c, mode]
+
+ child = child.next
+
+ return
+
+
+class glx_function(gl_XML.gl_function):
+ def __init__(self, element, context):
+ self.glx_rop = 0
+ self.glx_sop = 0
+ self.glx_vendorpriv = 0
+
+ self.glx_vendorpriv_names = []
+
+ # If this is set to true, it means that GLdouble parameters should be
+ # written to the GLX protocol packet in the order they appear in the
+ # prototype. This is different from the "classic" ordering. In the
+ # classic ordering GLdoubles are written to the protocol packet first,
+ # followed by non-doubles. NV_vertex_program was the first extension
+ # to break with this tradition.
+
+ self.glx_doubles_in_order = 0
+
+ self.vectorequiv = None
+ self.output = None
+ self.can_be_large = 0
+ self.reply_always_array = 0
+ self.dimensions_in_reply = 0
+ self.img_reset = None
+
+ self.server_handcode = 0
+ self.client_handcode = 0
+ self.ignore = 0
+
+ self.count_parameter_list = []
+ self.counter_list = []
+ self.parameters_by_name = {}
+ self.offsets_calculated = 0
+
+ gl_XML.gl_function.__init__(self, element, context)
+ return
+
+
+ def process_element(self, element):
+ gl_XML.gl_function.process_element(self, element)
+
+ # If the function already has a vector equivalent set, don't
+ # set it again. This can happen if an alias to a function
+ # appears after the function that it aliases.
+
+ if not self.vectorequiv:
+ self.vectorequiv = element.nsProp("vectorequiv", None)
+
+
+ name = element.nsProp("name", None)
+ if name == self.name:
+ for param in self.parameters:
+ self.parameters_by_name[ param.name ] = param
+
+ if len(param.count_parameter_list):
+ self.count_parameter_list.extend( param.count_parameter_list )
+
+ if param.counter and param.counter not in self.counter_list:
+ self.counter_list.append(param.counter)
+
+
+ child = element.children
+ while child:
+ if child.type == "element" and child.name == "glx":
+ rop = child.nsProp( 'rop', None )
+ sop = child.nsProp( 'sop', None )
+ vop = child.nsProp( 'vendorpriv', None )
+
+ if rop:
+ self.glx_rop = int(rop)
+
+ if sop:
+ self.glx_sop = int(sop)
+
+ if vop:
+ self.glx_vendorpriv = int(vop)
+ self.glx_vendorpriv_names.append(name)
+
+ self.img_reset = child.nsProp( 'img_reset', None )
+
+ # The 'handcode' attribute can be one of 'true',
+ # 'false', 'client', or 'server'.
+
+ handcode = child.nsProp( 'handcode', None )
+ if handcode == "false":
+ self.server_handcode = 0
+ self.client_handcode = 0
+ elif handcode == "true":
+ self.server_handcode = 1
+ self.client_handcode = 1
+ elif handcode == "client":
+ self.server_handcode = 0
+ self.client_handcode = 1
+ elif handcode == "server":
+ self.server_handcode = 1
+ self.client_handcode = 0
+ else:
+ raise RuntimeError('Invalid handcode mode "%s" in function "%s".' % (handcode, self.name))
+
+ self.ignore = gl_XML.is_attr_true( child, 'ignore' )
+ self.can_be_large = gl_XML.is_attr_true( child, 'large' )
+ self.glx_doubles_in_order = gl_XML.is_attr_true( child, 'doubles_in_order' )
+ self.reply_always_array = gl_XML.is_attr_true( child, 'always_array' )
+ self.dimensions_in_reply = gl_XML.is_attr_true( child, 'dimensions_in_reply' )
+
+ child = child.next
+
+
+ # Do some validation of the GLX protocol information. As
+ # new tests are discovered, they should be added here.
+
+ for param in self.parameters:
+ if param.is_output and self.glx_rop != 0:
+ raise RuntimeError("Render / RenderLarge commands cannot have outputs (%s)." % (self.name))
+
+ return
+
+
+ def has_variable_size_request(self):
+ """Determine if the GLX request packet is variable sized.
+
+ The GLX request packet is variable sized in several common
+ situations.
+
+ 1. The function has a non-output parameter that is counted
+ by another parameter (e.g., the 'textures' parameter of
+ glDeleteTextures).
+
+ 2. The function has a non-output parameter whose count is
+ determined by another parameter that is an enum (e.g., the
+ 'params' parameter of glLightfv).
+
+ 3. The function has a non-output parameter that is an
+ image.
+
+ 4. The function must be hand-coded on the server.
+ """
+
+ if self.glx_rop == 0:
+ return 0
+
+ if self.server_handcode or self.images:
+ return 1
+
+ for param in self.parameters:
+ if not param.is_output:
+ if param.counter or len(param.count_parameter_list):
+ return 1
+
+ return 0
+
+
+ def variable_length_parameter(self):
+ for param in self.parameters:
+ if not param.is_output:
+ if param.counter or len(param.count_parameter_list):
+ return param
+
+ return None
+
+
+ def calculate_offsets(self):
+ if not self.offsets_calculated:
+ # Calculate the offset of the first function parameter
+ # in the GLX command packet. This byte offset is
+ # measured from the end of the Render / RenderLarge
+ # header. The offset for all non-pixel commends is
+ # zero. The offset for pixel commands depends on the
+ # number of dimensions of the pixel data.
+
+ if len(self.images) and not self.images[0].is_output:
+ [dim, junk, junk, junk, junk] = self.images[0].get_dimensions()
+
+ # The base size is the size of the pixel pack info
+ # header used by images with the specified number
+ # of dimensions.
+
+ if dim <= 2:
+ offset = 20
+ elif dim <= 4:
+ offset = 36
+ else:
+ raise RuntimeError('Invalid number of dimensions %u for parameter "%s" in function "%s".' % (dim, self.image.name, self.name))
+ else:
+ offset = 0
+
+ for param in self.parameterIterateGlxSend():
+ if param.img_null_flag:
+ offset += 4
+
+ if param.name != self.img_reset:
+ param.offset = offset
+ if not param.is_variable_length() and not param.is_client_only:
+ offset += param.size()
+
+ if self.pad_after( param ):
+ offset += 4
+
+
+ self.offsets_calculated = 1
+ return
+
+
+ def offset_of(self, param_name):
+ self.calculate_offsets()
+ return self.parameters_by_name[ param_name ].offset
+
+
+ def parameterIterateGlxSend(self, include_variable_parameters = 1):
+ """Create an iterator for parameters in GLX request order."""
+
+ # The parameter lists are usually quite short, so it's easier
+ # (i.e., less code) to just generate a new list with the
+ # required elements than it is to create a new iterator class.
+
+ temp = [ [], [], [] ]
+ for param in self.parameters:
+ if param.is_output: continue
+
+ if param.is_variable_length():
+ temp[2].append( param )
+ elif not self.glx_doubles_in_order and param.is_64_bit():
+ temp[0].append( param )
+ else:
+ temp[1].append( param )
+
+ parameters = temp[0]
+ parameters.extend( temp[1] )
+ if include_variable_parameters:
+ parameters.extend( temp[2] )
+ return parameters.__iter__()
+
+
+ def parameterIterateCounters(self):
+ temp = []
+ for name in self.counter_list:
+ temp.append( self.parameters_by_name[ name ] )
+
+ return temp.__iter__()
+
+
+ def parameterIterateOutputs(self):
+ temp = []
+ for p in self.parameters:
+ if p.is_output:
+ temp.append( p )
+
+ return temp
+
+
+ def command_fixed_length(self):
+ """Return the length, in bytes as an integer, of the
+ fixed-size portion of the command."""
+
+ if len(self.parameters) == 0:
+ return 0
+
+ self.calculate_offsets()
+
+ size = 0
+ for param in self.parameterIterateGlxSend(0):
+ if param.name != self.img_reset and not param.is_client_only:
+ if size == 0:
+ size = param.offset + param.size()
+ else:
+ size += param.size()
+
+ if self.pad_after( param ):
+ size += 4
+
+ for param in self.images:
+ if param.img_null_flag or param.is_output:
+ size += 4
+
+ return size
+
+
+ def command_variable_length(self):
+ """Return the length, as a string, of the variable-sized
+ portion of the command."""
+
+ size_string = ""
+ for p in self.parameterIterateGlxSend():
+ if (not p.is_output) and (p.is_variable_length() or p.is_image()):
+ # FIXME Replace the 1 in the size_string call
+ # FIXME w/0 to eliminate some un-needed parnes
+ # FIXME This would already be done, but it
+ # FIXME adds some extra diffs to the generated
+ # FIXME code.
+
+ size_string = size_string + " + __GLX_PAD(%s)" % (p.size_string(1))
+
+ return size_string
+
+
+ def command_length(self):
+ size = self.command_fixed_length()
+
+ if self.glx_rop != 0:
+ size += 4
+
+ size = ((size + 3) & ~3)
+ return "%u%s" % (size, self.command_variable_length())
+
+
+ def opcode_real_value(self):
+ """Get the true numeric value of the GLX opcode
+
+ Behaves similarly to opcode_value, except for
+ X_GLXVendorPrivate and X_GLXVendorPrivateWithReply commands.
+ In these cases the value for the GLX opcode field (i.e.,
+ 16 for X_GLXVendorPrivate or 17 for
+ X_GLXVendorPrivateWithReply) is returned. For other 'single'
+ commands, the opcode for the command (e.g., 101 for
+ X_GLsop_NewList) is returned."""
+
+ if self.glx_vendorpriv != 0:
+ if self.needs_reply():
+ return 17
+ else:
+ return 16
+ else:
+ return self.opcode_value()
+
+
+ def opcode_value(self):
+ """Get the unique protocol opcode for the glXFunction"""
+
+ if (self.glx_rop == 0) and self.vectorequiv:
+ equiv = self.context.functions_by_name[ self.vectorequiv ]
+ self.glx_rop = equiv.glx_rop
+
+
+ if self.glx_rop != 0:
+ return self.glx_rop
+ elif self.glx_sop != 0:
+ return self.glx_sop
+ elif self.glx_vendorpriv != 0:
+ return self.glx_vendorpriv
+ else:
+ return -1
+
+
+ def opcode_rop_basename(self):
+ """Return either the name to be used for GLX protocol enum.
+
+ Returns either the name of the function or the name of the
+ name of the equivalent vector (e.g., glVertex3fv for
+ glVertex3f) function."""
+
+ if self.vectorequiv == None:
+ return self.name
+ else:
+ return self.vectorequiv
+
+
+ def opcode_name(self):
+ """Get the unique protocol enum name for the glXFunction"""
+
+ if (self.glx_rop == 0) and self.vectorequiv:
+ equiv = self.context.functions_by_name[ self.vectorequiv ]
+ self.glx_rop = equiv.glx_rop
+ self.glx_doubles_in_order = equiv.glx_doubles_in_order
+
+
+ if self.glx_rop != 0:
+ return "X_GLrop_%s" % (self.opcode_rop_basename())
+ elif self.glx_sop != 0:
+ return "X_GLsop_%s" % (self.name)
+ elif self.glx_vendorpriv != 0:
+ return "X_GLvop_%s" % (self.name)
+ else:
+ raise RuntimeError('Function "%s" has no opcode.' % (self.name))
+
+
+ def opcode_vendor_name(self, name):
+ if name in self.glx_vendorpriv_names:
+ return "X_GLvop_%s" % (name)
+ else:
+ raise RuntimeError('Function "%s" has no VendorPrivate opcode.' % (name))
+
+
+ def opcode_real_name(self):
+ """Get the true protocol enum name for the GLX opcode
+
+ Behaves similarly to opcode_name, except for
+ X_GLXVendorPrivate and X_GLXVendorPrivateWithReply commands.
+ In these cases the string 'X_GLXVendorPrivate' or
+ 'X_GLXVendorPrivateWithReply' is returned. For other
+ single or render commands 'X_GLsop' or 'X_GLrop' plus the
+ name of the function returned."""
+
+ if self.glx_vendorpriv != 0:
+ if self.needs_reply():
+ return "X_GLXVendorPrivateWithReply"
+ else:
+ return "X_GLXVendorPrivate"
+ else:
+ return self.opcode_name()
+
+
+ def needs_reply(self):
+ try:
+ x = self._needs_reply
+ except Exception, e:
+ x = 0
+ if self.return_type != 'void':
+ x = 1
+
+ for param in self.parameters:
+ if param.is_output:
+ x = 1
+ break
+
+ self._needs_reply = x
+
+ return x
+
+
+ def pad_after(self, p):
+ """Returns the name of the field inserted after the
+ specified field to pad out the command header."""
+
+ for image in self.images:
+ if image.img_pad_dimensions:
+ if not image.height:
+ if p.name == image.width:
+ return "height"
+ elif p.name == image.img_xoff:
+ return "yoffset"
+ elif not image.extent:
+ if p.name == image.depth:
+ # Should this be "size4d"?
+ return "extent"
+ elif p.name == image.img_zoff:
+ return "woffset"
+
+ return None
+
+
+ def has_different_protocol(self, name):
+ """Returns true if the named version of the function uses different protocol from the other versions.
+
+ Some functions, such as glDeleteTextures and
+ glDeleteTexturesEXT are functionally identical, but have
+ different protocol. This function returns true if the
+ named function is an alias name and that named version uses
+ different protocol from the function that is aliased.
+ """
+
+ return (name in self.glx_vendorpriv_names) and self.glx_sop
+
+
+ def static_glx_name(self, name):
+ if self.has_different_protocol(name):
+ for n in self.glx_vendorpriv_names:
+ if n in self.static_entry_points:
+ return n
+
+ return self.static_name(name)
+
+
+ def client_supported_for_indirect(self):
+ """Returns true if the function is supported on the client
+ side for indirect rendering."""
+
+ return not self.ignore and (self.offset != -1) and (self.glx_rop or self.glx_sop or self.glx_vendorpriv or self.vectorequiv or self.client_handcode)
+
+
+class glx_function_iterator:
+ """Class to iterate over a list of glXFunctions"""
+
+ def __init__(self, context):
+ self.iterator = context.functionIterateByOffset()
+ return
+
+
+ def __iter__(self):
+ return self
+
+
+ def next(self):
+ f = self.iterator.next()
+
+ if f.client_supported_for_indirect():
+ return f
+ else:
+ return self.next()
+
+
+class glx_api(gl_XML.gl_api):
+ def functionIterateGlx(self):
+ return glx_function_iterator(self)
+
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