1#!/usr/bin/env python
2
3# (C) Copyright IBM Corporation 2004, 2005
4# All Rights Reserved.
5#
6# Permission is hereby granted, free of charge, to any person obtaining a
7# copy of this software and associated documentation files (the "Software"),
8# to deal in the Software without restriction, including without limitation
9# on the rights to use, copy, modify, merge, publish, distribute, sub
10# license, and/or sell copies of the Software, and to permit persons to whom
11# the Software is furnished to do so, subject to the following conditions:
12#
13# The above copyright notice and this permission notice (including the next
14# paragraph) shall be included in all copies or substantial portions of the
15# Software.
16#
17# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
20# IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
23# IN THE SOFTWARE.
24#
25# Authors:
26#    Ian Romanick <idr@us.ibm.com>
27
28import gl_XML, glX_XML
29import string
30
31
32class glx_proto_item_factory(glX_XML.glx_item_factory):
33	"""Factory to create GLX protocol oriented objects derived from gl_item."""
34
35	def create_item(self, name, element, context):
36		if name == "type":
37			return glx_proto_type(element, context)
38		else:
39			return glX_XML.glx_item_factory.create_item(self, name, element, context)
40
41
42class glx_proto_type(gl_XML.gl_type):
43	def __init__(self, element, context):
44		gl_XML.gl_type.__init__(self, element, context)
45
46		self.glx_name = element.nsProp( "glx_name", None )
47		return
48
49
50class glx_print_proto(gl_XML.gl_print_base):
51	def size_call(self, func, outputs_also = 0):
52		"""Create C code to calculate 'compsize'.
53
54		Creates code to calculate 'compsize'.  If the function does
55		not need 'compsize' to be calculated, None will be
56		returned."""
57
58		compsize = None
59
60		for param in func.parameterIterator():
61			if outputs_also or not param.is_output:
62				if param.is_image():
63					[dim, w, h, d, junk] = param.get_dimensions()
64
65					compsize = '__glImageSize(%s, %s, %s, %s, %s, %s)' % (w, h, d, param.img_format, param.img_type, param.img_target)
66					if not param.img_send_null:
67						compsize = '(%s != NULL) ? %s : 0' % (param.name, compsize)
68
69					return compsize
70
71				elif len(param.count_parameter_list):
72					parameters = string.join( param.count_parameter_list, "," )
73					compsize = "__gl%s_size(%s)" % (func.name, parameters)
74
75					return compsize
76
77		return None
78
79
80	def emit_packet_size_calculation(self, f, bias):
81		# compsize is only used in the command size calculation if
82		# the function has a non-output parameter that has a non-empty
83		# counter_parameter_list.
84
85		compsize = self.size_call(f)
86		if compsize:
87			print '    const GLuint compsize = %s;' % (compsize)
88
89		if bias:
90			print '    const GLuint cmdlen = %s - %u;' % (f.command_length(), bias)
91		else:
92			print '    const GLuint cmdlen = %s;' % (f.command_length())
93
94		#print ''
95		return compsize
96