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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_type(self, element, context, category):
36        return glx_proto_type(element, context, category)
37
38
39class glx_proto_type(gl_XML.gl_type):
40    def __init__(self, element, context, category):
41        gl_XML.gl_type.__init__(self, element, context, category)
42
43        self.glx_name = element.get( "glx_name" )
44        return
45
46
47class glx_print_proto(gl_XML.gl_print_base):
48    def size_call(self, func, outputs_also = 0):
49        """Create C code to calculate 'compsize'.
50
51        Creates code to calculate 'compsize'.  If the function does
52        not need 'compsize' to be calculated, None will be
53        returned."""
54
55        compsize = None
56
57        for param in func.parameterIterator():
58            if outputs_also or not param.is_output:
59                if param.is_image():
60                    [dim, w, h, d, junk] = param.get_dimensions()
61
62                    compsize = '__glImageSize(%s, %s, %s, %s, %s, %s)' % (w, h, d, param.img_format, param.img_type, param.img_target)
63                    if not param.img_send_null:
64                        compsize = '(%s != NULL) ? %s : 0' % (param.name, compsize)
65
66                    return compsize
67
68                elif len(param.count_parameter_list):
69                    parameters = string.join( param.count_parameter_list, "," )
70                    compsize = "__gl%s_size(%s)" % (func.name, parameters)
71
72                    return compsize
73
74        return None
75
76
77    def emit_packet_size_calculation(self, f, bias):
78        # compsize is only used in the command size calculation if
79        # the function has a non-output parameter that has a non-empty
80        # counter_parameter_list.
81
82        compsize = self.size_call(f)
83        if compsize:
84            print '    const GLuint compsize = %s;' % (compsize)
85
86        if bias:
87            print '    const GLuint cmdlen = %s - %u;' % (f.command_length(), bias)
88        else:
89            print '    const GLuint cmdlen = %s;' % (f.command_length())
90
91        #print ''
92        return compsize
93