+ 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.get("vectorequiv")
+
+
+ name = element.get("name")
+ 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)
+
+
+ for child in element.getchildren():
+ if child.tag == "glx":
+ rop = child.get( 'rop' )
+ sop = child.get( 'sop' )
+ vop = child.get( 'vendorpriv' )
+
+ 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.get( 'img_reset' )
+
+ # The 'handcode' attribute can be one of 'true',
+ # 'false', 'client', or 'server'.
+
+ handcode = child.get( 'handcode', 'false' )
+ 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' )
+
+
+ # 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
+