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-rw-r--r--src/mesa/glapi/glX_doc.py278
1 files changed, 278 insertions, 0 deletions
diff --git a/src/mesa/glapi/glX_doc.py b/src/mesa/glapi/glX_doc.py
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+++ b/src/mesa/glapi/glX_doc.py
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+#!/usr/bin/python2
+
+# (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 <[email protected]>
+
+from xml.sax import saxutils
+from xml.sax import make_parser
+from xml.sax.handler import feature_namespaces
+
+import gl_XML
+import glX_XML
+import license
+import sys, getopt
+
+
+class glXDocItemFactory(glX_XML.glXItemFactory):
+ """Factory to create GLX protocol documentation oriented objects derived from glItem."""
+
+ def create(self, context, name, attrs):
+ if name == "param":
+ return glXDocParameter(context, name, attrs)
+ else:
+ return glX_XML.glXItemFactory.create(self, context, name, attrs)
+
+class glXDocParameter(gl_XML.glParameter):
+ def __init__(self, context, name, attrs):
+ self.order = 1;
+ gl_XML.glParameter.__init__(self, context, name, attrs);
+
+
+ def packet_type(self):
+ """Get the type string for the packet header
+
+ GLX protocol documentation uses type names like CARD32,
+ FLOAT64, LISTofCARD8, and ENUM. This function converts the
+ type of the parameter to one of these names."""
+
+ list_of = ""
+ if self.is_array():
+ list_of = "LISTof"
+
+ if self.p_type.glx_name == "":
+ type_name = "CARD8"
+ else:
+ type_name = self.p_type.glx_name
+
+ return "%s%s" % (list_of, type_name)
+
+ def packet_size(self):
+ p = None
+ s = self.size()
+ if s == 0:
+ a_prod = "n"
+ b_prod = self.p_type.size
+
+ if self.p_count_parameters == None and self.counter != None:
+ a_prod = self.counter
+ elif (self.p_count_parameters != None and self.counter == None) or (self.is_output):
+ pass
+ elif self.p_count_parameters != None and self.counter != None:
+ b_prod = self.counter
+ else:
+ raise RuntimeError("Parameter '%s' to function '%s' has size 0." % (self.name, self.context.name))
+
+ ss = "%s*%s" % (a_prod, b_prod)
+
+ return [ss, p]
+ else:
+ if s % 4 != 0:
+ p = "p"
+
+ return [str(s), p]
+
+class PrintGlxProtoText(glX_XML.GlxProto):
+ def __init__(self):
+ glX_XML.GlxProto.__init__(self)
+ self.factory = glXDocItemFactory()
+ self.last_category = ""
+ self.license = ""
+
+ def printHeader(self):
+ return
+
+ def body_size(self, f):
+ # At some point, refactor this function and
+ # glXFunction::command_payload_length.
+
+ size = 0;
+ size_str = ""
+ pad_str = ""
+ plus = ""
+ for p in f.parameterIterator(1, 2):
+ [s, pad] = p.packet_size()
+ try:
+ size += int(s)
+ except Exception,e:
+ size_str += "%s%s" % (plus, s)
+ plus = "+"
+
+ if pad != None:
+ pad_str = pad
+
+ return [size, size_str, pad_str]
+
+ def print_render_header(self, f):
+ [size, size_str, pad_str] = self.body_size(f)
+ size += 4;
+
+ if size_str == "":
+ s = "%u" % ((size + 3) & ~3)
+ elif pad_str != "":
+ s = "%u+%s+%s" % (size, size_str, pad_str)
+ else:
+ s = "%u+%s" % (size, size_str)
+
+ print ' 2 %-15s rendering command length' % (s)
+ print ' 2 %-4u rendering command opcode' % (f.glx_rop)
+ return
+
+
+ def print_single_header(self, f):
+ [size, size_str, pad_str] = self.body_size(f)
+ size = ((size + 3) / 4) + 2;
+
+ if f.glx_vendorpriv != 0:
+ size += 1
+
+ print ' 1 CARD8 opcode (X assigned)'
+ print ' 1 %-4u GLX opcode (%s)' % (f.opcode_real_value(), f.opcode_real_name())
+
+ if size_str == "":
+ s = "%u" % (size)
+ elif pad_str != "":
+ s = "%u+((%s+%s)/4)" % (size, size_str, pad_str)
+ else:
+ s = "%u+((%s)/4)" % (size, size_str)
+
+ print ' 2 %-15s request length' % (s)
+
+ if f.glx_vendorpriv != 0:
+ print ' 4 %-4u vendor specific opcode' % (f.opcode_value())
+
+ print ' 4 GLX_CONTEXT_TAG context tag'
+
+ return
+
+ def print_reply(self, f):
+ print ' =>'
+ print ' 1 1 reply'
+ print ' 1 unused'
+ print ' 2 CARD16 sequence number'
+
+ if f.output == None:
+ print ' 4 0 reply length'
+ elif f.reply_always_array:
+ print ' 4 m reply length'
+ else:
+ print ' 4 m reply length, m = (n == 1 ? 0 : n)'
+
+
+ unused = 24
+ if f.fn_return_type != 'void':
+ print ' 4 %-15s return value' % (f.fn_return_type)
+ unused -= 4
+ elif f.output != None:
+ print ' 4 unused'
+ unused -= 4
+
+ if f.output != None:
+ print ' 4 CARD32 n'
+ unused -= 4
+
+ if f.output != None:
+ if not f.reply_always_array:
+ print ''
+ print ' if (n = 1) this follows:'
+ print ''
+ print ' 4 CARD32 %s' % (f.output.name)
+ print ' %-2u unused' % (unused - 4)
+ print ''
+ print ' otherwise this follows:'
+ print ''
+
+ print ' %-2u unused' % (unused)
+ p = f.output
+ [s, pad] = p.packet_size()
+ print ' %-8s %-15s %s' % (s, p.packet_type(), p.name)
+ if pad != None:
+ try:
+ bytes = int(s)
+ bytes = 4 - (bytes & 3)
+ print ' %-8u %-15s unused' % (bytes, "")
+ except Exception,e:
+ print ' %-8s %-15s unused, %s=pad(%s)' % (pad, "", pad, s)
+ else:
+ print ' %-2u unused' % (unused)
+
+
+ def print_body(self, f):
+ for p in f.parameterIterator(1, 2):
+ [s, pad] = p.packet_size()
+ print ' %-8s %-15s %s' % (s, p.packet_type(), p.name)
+ if pad != None:
+ try:
+ bytes = int(s)
+ bytes = 4 - (bytes & 3)
+ print ' %-8u %-15s unused' % (bytes, "")
+ except Exception,e:
+ print ' %-8s %-15s unused, %s=pad(%s)' % (pad, "", pad, s)
+
+ def printFunction(self, f):
+ # At some point this should be expanded to support pixel
+ # functions, but I'm not going to lose any sleep over it now.
+
+ if f.fn_offset < 0 or f.handcode or f.ignore or f.vectorequiv or f.image:
+ return
+
+ print ' %s' % (f.name)
+
+ if f.glx_rop != 0:
+ self.print_render_header(f)
+ else:
+ self.print_single_header(f)
+
+ self.print_body(f)
+
+ if f.needs_reply():
+ self.print_reply(f)
+
+ print ''
+ return
+
+
+if __name__ == '__main__':
+ file_name = "gl_API.xml"
+
+ try:
+ (args, trail) = getopt.getopt(sys.argv[1:], "f:")
+ except Exception,e:
+ show_usage()
+
+ for (arg,val) in args:
+ if arg == "-f":
+ file_name = val
+
+ dh = PrintGlxProtoText()
+
+ parser = make_parser()
+ parser.setFeature(feature_namespaces, 0)
+ parser.setContentHandler(dh)
+
+ f = open(file_name)
+
+ dh.printHeader()
+ parser.parse(f)
+ dh.printFooter()
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