mesa/es: Add OpenGL ES overlay.

This is primitive support for OpenGL ES.  It uses a subset of mesa
sources to build libesXgallium.a and libesXapi.a, where X is 1 for
OpenGL ES 1.x, 2 for OpenGL ES 2.x.  The static libraries serve the same
purpose as libmesagallium.a and libglapi.a do for OpenGL.

This is based on the work of opengl-es branch.

Signed-off-by: Chia-I Wu <[email protected]>

1 files changed, 1117 insertions, 0 deletions

diff --git a/src/mesa/es/main/apiutil.py b/src/mesa/es/main/apiutil.py
new file mode 100644
index 00000000000..7fb1afc3a85
--- /dev/null
+++ b/src/mesa/es/main/apiutil.py
@@ -0,0 +1,1117 @@
+
+# apiutil.py
+#
+# This file defines a bunch of utility functions for OpenGL API code
+# generation.
+
+import sys, string, re
+
+
+#======================================================================
+
+def CopyrightC( ):
+        print """/* Copyright (c) 2001, Stanford University
+        All rights reserved.
+
+        See the file LICENSE.txt for information on redistributing this software. */
+        """
+
+def CopyrightDef( ):
+        print """; Copyright (c) 2001, Stanford University
+        ; All rights reserved.
+        ;
+        ; See the file LICENSE.txt for information on redistributing this software.
+        """
+
+
+#======================================================================
+
+class APIFunction:
+        """Class to represent a GL API function (name, return type,
+        parameters, etc)."""
+        def __init__(self):
+                self.name = ''
+                self.returnType = ''
+                self.category = ''
+                self.categories = []
+                self.offset = -1
+                self.alias = ''
+                self.vectoralias = ''
+                self.convertalias = ''
+                self.aliasprefix = ''
+                self.params = []
+                self.paramlist = []
+                self.paramvec = []
+                self.paramaction = []
+                self.paramprop = []
+                self.paramset = []
+                self.props = []
+                self.chromium = []
+
+def FindParamIndex(params, paramName):
+        """Given a function record, find the index of a named parameter"""
+        for i in range (len(params)):
+                if paramName == params[i][0]:
+                        return i
+        # If we get here, there was no such parameter
+        return None
+
+def SetTupleIndex(tuple, index, value):
+        t = ()
+        for i in range(len(tuple)):
+                if i == index:
+                        t += (value,)
+                else:
+                        t += (tuple[i],)
+        return t
+
+def VersionSpecificValues(category, values):
+        selectedValues = []
+        for value in values:
+                # Version-specific values are prefixed with the version
+                # number, e.g. GLES1.0:GL_TEXTURE_CUBE_MAP_OES
+                splitValue = value.split(":")
+                if len(splitValue) == 2:
+                        if category != None and splitValue[0] != category:
+                                # Don't want this one.
+                                continue
+                        else:
+                                selectedValues.append(splitValue[1])
+                else:
+                        selectedValues.append(value)
+        return selectedValues
+
+def ProcessSpecFile(filename, userFunc, category = None):
+        """Open the named API spec file and call userFunc(record, category) for each record
+        processed."""
+        specFile = open(filename, "r")
+        if not specFile:
+                print >>sys.stderr, "Error: couldn't open %s file!" % filename
+                sys.exit()
+
+        record = APIFunction()
+
+        for line in specFile.readlines():
+
+                # split line into tokens
+                tokens = string.split(line)
+
+                if len(tokens) > 0 and line[0] != '#':
+
+                        if tokens[0] == 'name':
+                                if record.name != '':
+                                        # process the old function now
+                                        userFunc(record, category)
+                                        # reset the record
+                                        record = APIFunction()
+
+                                record.name = tokens[1]
+
+                        elif tokens[0] == 'return':
+                                record.returnType = string.join(tokens[1:], ' ')
+                        
+                        elif tokens[0] == 'param':
+                                name = tokens[1]
+                                type = string.join(tokens[2:], ' ')
+                                vecSize = 0
+                                record.params.append((name, type, vecSize, None, [], None))
+
+                        elif tokens[0] == 'paramprop':
+                                name = tokens[1]
+                                str = tokens[2:]
+                                enums = []
+                                for i in range(len(str)):
+                                        enums.append(str[i]) 
+                                record.paramprop.append((name, enums))
+
+                        elif tokens[0] == 'paramlist':
+                                name = tokens[1]
+                                str = tokens[2:]
+                                list = []
+                                for i in range(len(str)):
+                                        list.append(str[i]) 
+                                record.paramlist.append((name,list))
+
+                        elif tokens[0] == 'paramvec':
+                                name = tokens[1]
+                                str = tokens[2:]
+                                vec = []
+                                for i in range(len(str)):
+                                        vec.append(str[i]) 
+                                record.paramvec.append((name,vec))
+
+                        elif tokens[0] == 'paramset':
+                                line = tokens[1:]
+                                result = []
+                                for i in range(len(line)):
+                                        tset = line[i]
+                                        if tset == '[':
+                                                nlist = []
+                                        elif tset == ']':
+                                                result.append(nlist)
+                                                nlist = []
+                                        else:
+                                                nlist.append(tset)
+                                if result != []:
+                                        record.paramset.append(result)
+
+                        elif tokens[0] == 'paramaction':
+                                name = tokens[1]
+                                str = tokens[2:]
+                                list = []
+                                for i in range(len(str)):
+                                        list.append(str[i]) 
+                                record.paramaction.append((name,list))
+
+                        elif tokens[0] == 'category':
+                                record.category = tokens[1]
+                                record.categories = tokens[1:]
+
+                        elif tokens[0] == 'offset':
+                                if tokens[1] == '?':
+                                        record.offset = -2
+                                else:
+                                        record.offset = int(tokens[1])
+
+                        elif tokens[0] == 'alias':
+                                record.alias = tokens[1]
+
+                        elif tokens[0] == 'vectoralias':
+                                record.vectoralias = tokens[1]
+
+                        elif tokens[0] == 'convertalias':
+                                record.convertalias = tokens[1]
+
+                        elif tokens[0] == 'aliasprefix':
+                                record.aliasprefix = tokens[1]
+
+                        elif tokens[0] == 'props':
+                                record.props = tokens[1:]
+
+                        elif tokens[0] == 'chromium':
+                                record.chromium = tokens[1:]
+
+                        elif tokens[0] == 'vector':
+                                vecName = tokens[1]
+                                vecSize = int(tokens[2])
+                                index = FindParamIndex(record.params, vecName)
+                                if index == None:
+                                        print >>sys.stderr, "Can't find vector '%s' for function '%s'" % (vecName, record.name)
+                                # Adjust just the vector size
+                                record.params[index] = SetTupleIndex(record.params[index], 2, vecSize)
+
+                        elif tokens[0] == 'dependentvector':
+                                dependentVecName = tokens[1]
+                                # the dependentVecSize may be an int
+                                # expression
+                                dependentVecSize = tokens[2]
+                                controllingParam = tokens[3]
+                                controllingParamIndex = FindParamIndex(record.params, controllingParam)
+                                if controllingParamIndex == None:
+                                        print >>sys.stderr, "Can't find controlling param '%s' for function '%s'" % (controllingParam, record.name)
+                                controllingValues = tokens[4:]
+
+                                # Remember that all of the controllingValues
+                                # are valid values for the controllingParam.
+                                # We may be duplicating controllingValues
+                                # here (i.e. if we get them from different
+                                # places); we'll sort them out later.
+                                validValues = record.params[controllingParamIndex][4]
+                                for value in VersionSpecificValues(category, controllingValues):
+                                        validValues.append((value, dependentVecSize, dependentVecName, [], None, None))
+                                # Don't need to reassign validValues back
+                                # to the tuple - it's a shallow pointer,
+                                # so the tuple is already modified.  
+                                # (And attempting to do so would produce an
+                                # error anyway.)
+
+                        elif tokens[0] == "dependentnovalueconvert":
+                                paramName = tokens[1]
+                                controllingParamName = tokens[2]
+                                controllingValues = tokens[3:]
+
+                                controllingParamIndex = FindParamIndex(record.params, controllingParamName)
+                                if controllingParamIndex == None:
+                                        print >>sys.stderr, "Can't find controlling param '%s' for function '%s'" % (controllingParamName, record.name)
+
+                                validValues = record.params[controllingParamIndex][4]
+                                for value in VersionSpecificValues(category, controllingValues):
+                                        validValues.append((value, None, None, [], None, "noconvert"))
+
+
+
+                        elif tokens[0] == 'checkparam':
+                                paramName = tokens[1]
+                                values = tokens[2:]
+                                paramIndex = FindParamIndex(record.params, paramName)
+                                if paramIndex == None:
+                                        print >>sys.stderr, "Can't find checked param '%s' for function '%s'" % (paramName, record.name)
+
+                                errorCode = None
+
+                                # We may be duplicating valid values here;
+                                # just add all values to the existing
+                                # record, and we'll prune out duplicates
+                                # later
+                                validValues = record.params[paramIndex][4]
+
+                                # A /GL_* value represents an error, not
+                                # a real value.  Look through the values
+                                # and only append the non-error values.
+                                for v in VersionSpecificValues(category, values):
+                                        if v[0] == "/":
+                                                errorCode = v[1:]
+                                        else:
+                                            validValues.append((v, None, None, [], errorCode, None))
+                                # Don't need to reassign validValues back
+                                # to the parameter tuple - it's a shallow pointer,
+                                # so the tuple is already modified.  
+                                # (And attempting to do so would produce an
+                                # error anyway.)
+
+                        elif tokens[0] == 'checkdependentparam':
+                                paramName = tokens[1]
+                                controllingValue = tokens[2]
+                                dependentParamName = tokens[3]
+                                validDependentValues = tokens[4:]
+                                errorCode = None
+
+                                # A /GL_* value represents an error, not
+                                # a real value.  Look through the values
+                                # and only append the non-error values.
+                                validDependentValues = []
+                                for v in tokens[4:]:
+                                        if v[0] == "/":
+                                                errorCode = v[1:]
+                                        else:
+                                            validDependentValues.append(v)
+
+                                paramIndex = FindParamIndex(record.params, paramName)
+                                if paramIndex == None:
+                                        print >>sys.stderr, "Can't find dependent param '%s' for function '%s'" % (paramName, record.name)
+
+                                validValues = record.params[paramIndex][4]
+                                # We may be duplicating valid values here;
+                                # we'll sort them out later.  Avoid
+                                # adding a controlling value record
+                                # at all if there are no values
+                                # in the list of values (so that
+                                # controlling values with only
+                                # version-specific values listed
+                                # end up as version-specific
+                                # themselves).
+                                versionSpecificValues = VersionSpecificValues(category, validDependentValues)
+                                if versionSpecificValues != []:
+                                        validValues.append((controllingValue, None, dependentParamName, versionSpecificValues, errorCode, None))
+                                # Don't need to reassign validValues back
+                                # to the tuple - it's a shallow pointer,
+                                # so the tuple is already modified.  
+                                # (And attempting to do so would produce an
+                                # error anyway.)
+
+                        elif tokens[0] == 'convertparams':
+                                convertToType = tokens[1]
+                                # Replace the conversion type in each named
+                                # parameter
+                                for paramName in tokens[2:]:
+                                        paramIndex = FindParamIndex(record.params, paramName)
+                                        if paramIndex == None:
+                                            print >>sys.stderr, "Can't find converted param '%s' for function '%s'" % (paramName, record.name)
+                                        # Tuples don't support item assignment,
+                                        # so to replace scalar values in a
+                                        # tuple, you have to reassign the
+                                        # whole friggin' thing.
+                                        record.params[paramIndex] = SetTupleIndex(record.params[paramIndex], 3, convertToType)
+
+                        else:
+                                print >>sys.stderr, 'Invalid token %s after function %s' % (tokens[0], record.name)
+                        #endif
+                #endif
+        #endfor
+
+        # Call the user function for the last record, if we still have one
+        # lying around nearly finished
+        if record.name != '':
+                # process the function now
+                userFunc(record, category)
+        specFile.close()
+#enddef
+
+
+# Dictionary [name] of APIFunction:
+__FunctionDict = {}
+
+# Dictionary [name] of name
+__VectorVersion = {}
+
+# Reverse mapping of function name aliases
+__ReverseAliases = {}
+
+def CheckCategories(category, categories):
+    for c in categories:
+        if category == c.split(":")[0]:
+            return 1
+
+    return 0
+
+def AddFunction(record, category):
+        # If there is a category, we only want records from that category.
+        # Note that a category may be in the form "GLES1.1:OES_extension_name",
+        # which means that the function is supported as an extension in 
+        # GLES1.1...
+        if category and not CheckCategories(category, record.categories):
+                return
+
+        # Don't allow duplicates
+        if __FunctionDict.has_key(record.name):
+                print >>sys.stderr, "Duplicate record name '%s' ignored" % record.name
+                return
+
+        # Clean up a bit.  We collected valid values for parameters
+        # on the fly; it's quite possible that there are duplicates.
+        # If there are, collect them together.
+        # 
+        # We're also going to keep track of all the dependent values
+        # that can show up for a parameter; the number of GLenum values
+        # (identified with a prefixed "GL_") affects how parameter
+        # value conversion happens, as GLenum values are not scaled
+        # when converted to or from GLfixed values, the way integer
+        # and floating point values are.
+        paramValueConversion = {}
+
+        for i in range(len(record.params)):
+                foundValidValues = {}
+
+                (name, type, maxVecSize, convertToType, validValues, valueConversion) = record.params[i]
+                for (controllingValue, vecSize, dependentParamName, dependentValues, errorCode, valueConvert) in validValues:
+                        # Keep track of the maximum vector size for the
+                        # *dependent* parameter, not for the controlling
+                        # parameter.  Note that the dependent parameter
+                        # may be an expression - in this case, don't
+                        # consider it.
+                        if dependentParamName != None and vecSize != None and vecSize.isdigit():
+                                dependentParamIndex = FindParamIndex(record.params, dependentParamName)
+                                if dependentParamIndex == None:
+                                        print >>sys.stderr, "Couldn't find dependent parameter '%s' of function '%s'" % (dependentParamName, record.name)
+                                (dName, dType, dMaxVecSize, dConvert, dValid, dValueConversion) = record.params[dependentParamIndex]
+                                if dMaxVecSize == None or int(vecSize) > dMaxVecSize:
+                                        dMaxVecSize = int(vecSize)
+                                        record.params[dependentParamIndex] = (dName, dType, dMaxVecSize, dConvert, dValid, dValueConversion)
+
+                        # Make sure an entry for the controlling value
+                        # exists in the foundValidValues dictionary
+                        if controllingValue in foundValidValues:
+                                # The value was already there.  Merge the
+                                # two together, giving errors if needed.
+                                (oldControllingValue, oldVecSize, oldDependentParamName, oldDependentValues, oldErrorCode, oldValueConvert) = foundValidValues[controllingValue]
+
+                                # Make sure the vector sizes are compatible;
+                                # either one should be None (and be 
+                                # overridden by the other), or they should
+                                # match exactly.  If one is not an
+                                # integer (this can happen if the 
+                                # dependent value is an integer expression,
+                                # which occurs a couple of times), don't
+                                # use it.
+                                if oldVecSize == None:
+                                        oldVecSize = vecSize
+                                elif vecSize != None and vecSize != oldVecSize:
+                                        print >>sys.stderr, "Found two different vector sizes (%s and %s) for the same controlling value '%s' of the same parameter '%s' of function '%s'" % (oldVecSize, vecSize, controllingValue, name, record.name)
+
+                                # Same for the dependent parameter name.
+                                if oldDependentParamName == None:
+                                        oldDependentParamName = dependentParamName
+                                elif dependentParamName != None and dependentParamName != oldDependentParamName:
+                                        print >>sys.stderr, "Found two different dependent parameter names (%s and %s) for the same controlling value '%s' of the same parameter '%s' of function '%s'" % (oldDependentParamName, dependentParamName, controllingValue, name, record.name)
+
+                                # And for the error code.
+                                if oldErrorCode == None:
+                                        oldErrorCode = errorCode
+                                elif errorCode != None and errorCode != oldErrorCode:
+                                        print >>sys.stderr, "Found two different error codes(%s and %s) for the same controlling value '%s' of the same parameter '%s' of function '%s'" % (oldErrorCode, errorCode, controllingValue, name, record.name)
+
+                                # And for the value conversion flag
+                                if oldValueConvert == None:
+                                        oldValueConvert = valueConvert
+                                elif valueConvert != None and valueConvert != oldValueConvert:
+                                        print >>sys.stderr, "Found two different value conversions(%s and %s) for the same controlling value '%s' of the same parameter '%s' of function '%s'" % (oldValueConvert, valueConvert, controllingValue, name, record.name)
+
+                                # Combine the dependentValues together
+                                # directly, but uniquely
+                                for value in dependentValues:
+                                        if value not in oldDependentValues:
+                                                oldDependentValues.append(value)
+
+                                # Stick the combined value back into the
+                                # dictionary.  We'll sort it back to the
+                                # array later.
+                                foundValidValues[oldControllingValue] = (oldControllingValue, oldVecSize, oldDependentParamName, oldDependentValues, oldErrorCode, oldValueConvert)
+                        else: # new controlling value
+                                # Just add it to the dictionary so we don't
+                                # add the same value more than once.
+                                foundValidValues[controllingValue] = (controllingValue, vecSize, dependentParamName, dependentValues, errorCode, valueConvert)
+                        # endif a new controlling value
+
+                # endfor all valid values for this parameter
+
+                # Now the foundValidValues[] dictionary holds all the
+                # pruned values (at most one for each valid value).
+                # But the validValues[] array still holds the order,
+                # which we want to maintain.  Go through the validValues
+                # array just for the names of the controlling values; 
+                # add any uncopied values to the prunedValidValues array.
+                prunedValidValues = []
+
+                for (controllingValue, vecSize, dependentParamName, dependentValues, errorCode, valueConvert) in validValues:
+                        if controllingValue in foundValidValues:
+                                prunedValidValues.append(foundValidValues[controllingValue])
+                                # Delete it from the dictionary so it isn't
+                                # copied again.
+                                del foundValidValues[controllingValue]
+
+                # Each parameter that is being converted may have a
+                # subset of values that are GLenums and are never
+                # converted.  In some cases, the parameter will 
+                # be implicitly determined to be such, by examining
+                # the listed possible values and determining for
+                # any particular controlling value whether there are
+                # any GLenum-valued allowed values.
+                #
+                # In other cases, the parameter will be explicitly
+                # marked as such with the "dependentnovalueconvert" flag;
+                # this is the way it has to be done with queries (which
+                # cannot list a valid list of values to be passed,
+                # because values are returned, not passed).
+                #
+                # For each value of controlling GLenum, we'll also
+                # need to know whether its dependent values are
+                # always converted (none of its values require
+                # GLenums to be passed in dependent parameters),
+                # never converted (all of its values require GLenums),
+                # or sometimes converted.
+                numNoConvertValues = 0
+                allDependentParams = []
+                for j in range(len(prunedValidValues)):
+                        (controllingValue, vecSize, dependentParamName, dependentValues, errorCode, valueConvert) = prunedValidValues[j]
+                        if dependentParamName != None and dependentParamName not in allDependentParams:
+                                allDependentParams.append(dependentParamName)
+
+                        # Check for an explicit noconvert marking...
+                        if valueConvert == "noconvert":
+                                numNoConvertValues += 1
+                        else:
+                                # Or check for an implicit one.
+                                for value in dependentValues:
+                                        if value[0:3] == "GL_":
+                                                valueConvert = "noconvert"
+                                                prunedValidValues[j] = (controllingValue, vecSize, dependentParamName, dependentValues, errorCode, valueConvert)
+                                                numNoConvertValues += 1
+                                                break
+
+                # For each named dependent param, set the value conversion
+                # flag based on whether all values, none, or some need
+                # value conversion.  This value is set stepwise
+                # for each parameter examined - 
+                for dp in allDependentParams:
+                        if numNoConvertValues == 0:
+                                if not paramValueConversion.has_key(dp):
+                                        paramValueConversion[dp] = "all"
+                                elif paramValueConversion[dp] == "none":
+                                        paramValueConversion[dp] = "some"
+                        elif numNoConvertValues == len(prunedValidValues):
+                                if not paramValueConversion.has_key(dp):
+                                        paramValueConversion[dp] = "none"
+                                elif paramValueConversion[dp] == "all":
+                                        paramValueConversion[dp] = "some"
+                        else:
+                                paramValueConversion[dp] = "some"
+
+                # Save away the record.  Save a placeholder in the
+                # valueConversion field - we can't set that until we've
+                # examined all the parameters.
+                record.params[i] = (name, type, maxVecSize, convertToType, prunedValidValues, None)
+
+        # endfor each param of the passed-in function record
+
+        # One more pass: for each parameter, if it is a parameter that
+        # needs conversion, save its value conversion type ("all", "none",
+        # or "some").  We only have to worry about conditional value 
+        # conversion for GLfixed parameters; in all other cases, we
+        # either don't convert at all (for non-converting parameters) or
+        # we convert everything.
+        for i in range(len(record.params)):
+                (name, type, maxVecSize, convertToType, validValues, valueConversion) = record.params[i]
+                if convertToType == None:
+                    valueConversion = None
+                elif paramValueConversion.has_key(name):
+                    valueConversion = paramValueConversion[name]
+                else:
+                    valueConversion = "all"
+
+                record.params[i] = (name, type, maxVecSize, convertToType, validValues, valueConversion)
+                                        
+        # We're done cleaning up!
+        # Add the function to the permanent record and we're done.
+        __FunctionDict[record.name] = record
+
+
+def GetFunctionDict(specFile = "", category = None):
+        if not specFile:
+                specFile = "../glapi_parser/APIspec.txt"
+        if len(__FunctionDict) == 0:
+                ProcessSpecFile(specFile, AddFunction, category)
+                # Look for vector aliased functions
+                for func in __FunctionDict.keys():
+                        va = __FunctionDict[func].vectoralias
+                        if va != '':
+                                __VectorVersion[va] = func
+                        #endif
+
+                        # and look for regular aliases (for glloader)
+                        a = __FunctionDict[func].alias
+                        if a:
+                                __ReverseAliases[a] = func
+                        #endif
+                #endfor
+        #endif
+        return __FunctionDict
+
+
+def GetAllFunctions(specFile = "", category = None):
+        """Return sorted list of all functions known to Chromium."""
+        d = GetFunctionDict(specFile, category)
+        funcs = []
+        for func in d.keys():
+                rec = d[func]
+                if not "omit" in rec.chromium:
+                        funcs.append(func)
+        funcs.sort()
+        return funcs
+        
+
+def GetDispatchedFunctions(specFile = "", category = None):
+        """Return sorted list of all functions handled by SPU dispatch table."""
+        d = GetFunctionDict(specFile, category)
+        funcs = []
+        for func in d.keys():
+                rec = d[func]
+                if (not "omit" in rec.chromium and
+                        not "stub" in rec.chromium and
+                        rec.alias == ''):
+                        funcs.append(func)
+        funcs.sort()
+        return funcs
+
+#======================================================================
+
+def ReturnType(funcName):
+        """Return the C return type of named function.
+        Examples: "void" or "const GLubyte *". """
+        d = GetFunctionDict()
+        return d[funcName].returnType
+
+
+def Parameters(funcName):
+        """Return list of tuples (name, type, vecSize) of function parameters.
+        Example: if funcName=="ClipPlane" return
+        [ ("plane", "GLenum", 0), ("equation", "const GLdouble *", 4) ] """
+        d = GetFunctionDict()
+        return d[funcName].params
+
+def ParamAction(funcName):
+        """Return list of names of actions for testing.
+        For PackerTest only."""
+        d = GetFunctionDict()
+        return d[funcName].paramaction
+
+def ParamList(funcName):
+        """Return list of tuples (name, list of values) of function parameters.
+        For PackerTest only."""
+        d = GetFunctionDict()
+        return d[funcName].paramlist
+
+def ParamVec(funcName):
+        """Return list of tuples (name, vector of values) of function parameters.
+        For PackerTest only."""
+        d = GetFunctionDict()
+        return d[funcName].paramvec
+
+def ParamSet(funcName):
+        """Return list of tuples (name, list of values) of function parameters.
+        For PackerTest only."""
+        d = GetFunctionDict()
+        return d[funcName].paramset
+
+
+def Properties(funcName):
+        """Return list of properties of the named GL function."""
+        d = GetFunctionDict()
+        return d[funcName].props
+
+def AllWithProperty(property):
+        """Return list of functions that have the named property."""
+        funcs = []
+        for funcName in GetDispatchedFunctions():
+                if property in Properties(funcName):
+                        funcs.append(funcName)
+        return funcs
+
+def Category(funcName):
+        """Return the primary category of the named GL function."""
+        d = GetFunctionDict()
+        return d[funcName].category
+
+def Categories(funcName):
+        """Return all the categories of the named GL function."""
+        d = GetFunctionDict()
+        return d[funcName].categories
+
+def ChromiumProps(funcName):
+        """Return list of Chromium-specific properties of the named GL function."""
+        d = GetFunctionDict()
+        return d[funcName].chromium
+
+def ParamProps(funcName):
+        """Return list of Parameter-specific properties of the named GL function."""
+        d = GetFunctionDict()
+        return d[funcName].paramprop
+
+def Alias(funcName):
+        """Return the function that the named function is an alias of.
+        Ex: Alias('DrawArraysEXT') = 'DrawArrays'.
+        """
+        d = GetFunctionDict()
+        return d[funcName].alias
+
+def AliasPrefix(funcName):
+        """Return the function that the named function is an alias of.
+        Ex: Alias('DrawArraysEXT') = 'DrawArrays'.
+        """
+        d = GetFunctionDict()
+        if d[funcName].aliasprefix == '':
+            return "_mesa_"
+        else:
+            return d[funcName].aliasprefix
+
+def ReverseAlias(funcName):
+        """Like Alias(), but the inverse."""
+        d = GetFunctionDict()
+        if funcName in __ReverseAliases.keys():
+                return __ReverseAliases[funcName]
+        else:
+                return ''
+
+def NonVectorFunction(funcName):
+        """Return the non-vector version of the given function, or ''.
+        For example: NonVectorFunction("Color3fv") = "Color3f"."""
+        d = GetFunctionDict()
+        return d[funcName].vectoralias
+
+def ConversionFunction(funcName):
+        """Return a function that can be used to implement the
+        given function, using different types.
+        For example: ConvertedFunction("Color4x") = "Color4f"."""
+        d = GetFunctionDict()
+        return d[funcName].convertalias
+
+def VectorFunction(funcName):
+        """Return the vector version of the given non-vector-valued function,
+        or ''.
+        For example: VectorVersion("Color3f") = "Color3fv"."""
+        d = GetFunctionDict()
+        if funcName in __VectorVersion.keys():
+                return __VectorVersion[funcName]
+        else:
+                return ''
+
+def GetCategoryWrapper(func_name):
+        """Return a C preprocessor token to test in order to wrap code.
+        This handles extensions.
+        Example: GetTestWrapper("glActiveTextureARB") = "CR_multitexture"
+        Example: GetTestWrapper("glBegin") = ""
+        """
+        cat = Category(func_name)
+        if (cat == "1.0" or
+                cat == "1.1" or
+                cat == "1.2" or
+                cat == "Chromium" or
+                cat == "GL_chromium"):
+                return ''
+        elif cat[0] =='1':
+                # i.e. OpenGL 1.3 or 1.4 or 1.5
+                return "OPENGL_VERSION_" + string.replace(cat, ".", "_")
+        else:
+                assert cat != ''
+                return string.replace(cat, "GL_", "")
+
+
+def CanCompile(funcName):
+        """Return 1 if the function can be compiled into display lists, else 0."""
+        props = Properties(funcName)
+        if ("nolist" in props or
+                "get" in props or
+                "setclient" in props):
+                return 0
+        else:
+                return 1
+
+def HasChromiumProperty(funcName, propertyList):
+        """Return 1 if the function or any alias has any property in the
+        propertyList"""
+        for funcAlias in [funcName, NonVectorFunction(funcName), VectorFunction(funcName)]:
+                if funcAlias:
+                        props = ChromiumProps(funcAlias)
+                        for p in propertyList:
+                                if p in props:
+                                        return 1
+        return 0
+
+def CanPack(funcName):
+        """Return 1 if the function can be packed, else 0."""
+        return HasChromiumProperty(funcName, ['pack', 'extpack', 'expandpack'])
+
+def HasPackOpcode(funcName):
+        """Return 1 if the function has a true pack opcode"""
+        return HasChromiumProperty(funcName, ['pack', 'extpack'])
+
+def SetsState(funcName):
+        """Return 1 if the function sets server-side state, else 0."""
+        props = Properties(funcName)
+
+        # Exceptions.  The first set of these functions *do* have 
+        # server-side state-changing  effects, but will be missed 
+        # by the general query, because they either render (e.g. 
+        # Bitmap) or do not compile into display lists (e.g. all the others).
+        # 
+        # The second set do *not* have server-side state-changing
+        # effects, despite the fact that they do not render
+        # and can be compiled.  They are control functions
+        # that are not trackable via state.
+        if funcName in ['Bitmap', 'DeleteTextures', 'FeedbackBuffer', 
+                'RenderMode', 'BindBufferARB', 'DeleteFencesNV']:
+                return 1
+        elif funcName in ['ExecuteProgramNV']:
+                return 0
+
+        # All compilable functions that do not render and that do
+        # not set or use client-side state (e.g. DrawArrays, et al.), set
+        # server-side state.
+        if CanCompile(funcName) and "render" not in props and "useclient" not in props and "setclient" not in props:
+                return 1
+
+        # All others don't set server-side state.
+        return 0
+
+def SetsClientState(funcName):
+        """Return 1 if the function sets client-side state, else 0."""
+        props = Properties(funcName)
+        if "setclient" in props:
+                return 1
+        return 0
+
+def SetsTrackedState(funcName):
+        """Return 1 if the function sets state that is tracked by
+        the state tracker, else 0."""
+        # These functions set state, but aren't tracked by the state
+        # tracker for various reasons: 
+        # - because the state tracker doesn't manage display lists
+        #   (e.g. CallList and CallLists)
+        # - because the client doesn't have information about what
+        #   the server supports, so the function has to go to the
+        #   server (e.g. CompressedTexImage calls)
+        # - because they require a round-trip to the server (e.g.
+        #   the CopyTexImage calls, SetFenceNV, TrackMatrixNV)
+        if funcName in [
+                'CopyTexImage1D', 'CopyTexImage2D',
+                'CopyTexSubImage1D', 'CopyTexSubImage2D', 'CopyTexSubImage3D',
+                'CallList', 'CallLists',
+                'CompressedTexImage1DARB', 'CompressedTexSubImage1DARB',
+                'CompressedTexImage2DARB', 'CompressedTexSubImage2DARB',
+                'CompressedTexImage3DARB', 'CompressedTexSubImage3DARB',
+                'SetFenceNV'
+                ]:
+                return 0
+
+        # Anything else that affects client-side state is trackable.
+        if SetsClientState(funcName):
+                return 1
+
+        # Anything else that doesn't set state at all is certainly
+        # not trackable.
+        if not SetsState(funcName):
+                return 0
+
+        # Per-vertex state isn't tracked the way other state is
+        # tracked, so it is specifically excluded.
+        if "pervertex" in Properties(funcName):
+                return 0
+
+        # Everything else is fine
+        return 1
+
+def UsesClientState(funcName):
+        """Return 1 if the function uses client-side state, else 0."""
+        props = Properties(funcName)
+        if "pixelstore" in props or "useclient" in props:
+                return 1
+        return 0
+
+def IsQuery(funcName):
+        """Return 1 if the function returns information to the user, else 0."""
+        props = Properties(funcName)
+        if "get" in props:
+                return 1
+        return 0
+
+def FuncGetsState(funcName):
+        """Return 1 if the function gets GL state, else 0."""
+        d = GetFunctionDict()
+        props = Properties(funcName)
+        if "get" in props:
+                return 1
+        else:
+                return 0
+
+def IsPointer(dataType):
+        """Determine if the datatype is a pointer.  Return 1 or 0."""
+        if string.find(dataType, "*") == -1:
+                return 0
+        else:
+                return 1
+
+
+def PointerType(pointerType):
+        """Return the type of a pointer.
+        Ex: PointerType('const GLubyte *') = 'GLubyte'
+        """
+        t = string.split(pointerType, ' ')
+        if t[0] == "const":
+                t[0] = t[1]
+        return t[0]
+
+
+
+
+def OpcodeName(funcName):
+        """Return the C token for the opcode for the given function."""
+        return "CR_" + string.upper(funcName) + "_OPCODE"
+
+
+def ExtendedOpcodeName(funcName):
+        """Return the C token for the extended opcode for the given function."""
+        return "CR_" + string.upper(funcName) + "_EXTEND_OPCODE"
+
+
+
+
+#======================================================================
+
+def MakeCallString(params):
+        """Given a list of (name, type, vectorSize) parameters, make a C-style
+        formal parameter string.
+        Ex return: 'index, x, y, z'.
+        """
+        result = ''
+        i = 1
+        n = len(params)
+        for (name, type, vecSize, convertToType, validValues, valueConversion) in params:
+                result += name
+                if i < n:
+                        result = result + ', '
+                i += 1
+        #endfor
+        return result
+#enddef
+
+
+def MakeDeclarationString(params):
+        """Given a list of (name, type, vectorSize) parameters, make a C-style
+        parameter declaration string.
+        Ex return: 'GLuint index, GLfloat x, GLfloat y, GLfloat z'.
+        """
+        n = len(params)
+        if n == 0:
+                return 'void'
+        else:
+                result = ''
+                i = 1
+                for (name, type, vecSize, convertToType, validValues, valueConversion) in params:
+                        result = result + type + ' ' + name
+                        if i < n:
+                                result = result + ', '
+                        i += 1
+                #endfor
+                return result
+        #endif
+#enddef
+
+
+def MakePrototypeString(params):
+        """Given a list of (name, type, vectorSize) parameters, make a C-style
+        parameter prototype string (types only).
+        Ex return: 'GLuint, GLfloat, GLfloat, GLfloat'.
+        """
+        n = len(params)
+        if n == 0:
+                return 'void'
+        else:
+                result = ''
+                i = 1
+                for (name, type, vecSize, convertToType, validValues, valueConversion) in params:
+                        result = result + type
+                        # see if we need a comma separator
+                        if i < n:
+                                result = result + ', '
+                        i += 1
+                #endfor
+                return result
+        #endif
+#enddef
+
+
+#======================================================================
+        
+__lengths = {
+        'GLbyte': 1,
+        'GLubyte': 1,
+        'GLshort': 2,
+        'GLushort': 2,
+        'GLint': 4,
+        'GLuint': 4,
+        'GLfloat': 4,
+        'GLclampf': 4,
+        'GLdouble': 8,
+        'GLclampd': 8,
+        'GLenum': 4,
+        'GLboolean': 1,
+        'GLsizei': 4,
+        'GLbitfield': 4,
+        'void': 0,  # XXX why?
+        'int': 4,
+        'GLintptrARB': 4,   # XXX or 8 bytes?
+        'GLsizeiptrARB': 4  # XXX or 8 bytes?
+}
+
+def sizeof(type):
+        """Return size of C datatype, in bytes."""
+        if not type in __lengths.keys():
+                print >>sys.stderr, "%s not in lengths!" % type
+        return __lengths[type]
+
+
+#======================================================================
+align_types = 1
+
+def FixAlignment( pos, alignment ):
+        # if we want double-alignment take word-alignment instead,
+        # yes, this is super-lame, but we know what we are doing
+        if alignment > 4:
+                alignment = 4
+        if align_types and alignment and ( pos % alignment ):
+                pos += alignment - ( pos % alignment )
+        return pos
+
+def WordAlign( pos ):
+        return FixAlignment( pos, 4 )
+
+def PointerSize():
+        return 8 # Leave room for a 64 bit pointer
+
+def PacketLength( params ):
+        len = 0
+        for (name, type, vecSize, convertToType, validValues, valueConversion) in params:
+                if IsPointer(type):
+                        size = PointerSize()
+                else:
+                        assert string.find(type, "const") == -1
+                        size = sizeof(type)
+                len = FixAlignment( len, size ) + size
+        len = WordAlign( len )
+        return len
+
+#======================================================================
+
+__specials = {}
+
+def LoadSpecials( filename ):
+        table = {}
+        try:
+                f = open( filename, "r" )
+        except:
+                __specials[filename] = {}
+                print >>sys.stderr, "%s not present" % filename
+                return {}
+        
+        for line in f.readlines():
+                line = string.strip(line)
+                if line == "" or line[0] == '#':
+                        continue
+                table[line] = 1
+        
+        __specials[filename] = table
+        return table
+
+
+def FindSpecial( filename, glName ):
+        table = {}
+        try:
+                table = __specials[filename]
+        except KeyError:
+                table = LoadSpecials( filename )
+        
+        try:
+                if (table[glName] == 1):
+                        return 1
+                else:
+                        return 0 #should never happen
+        except KeyError:
+                return 0
+
+
+def AllSpecials( table_file ):
+        table = {}
+        filename = table_file + "_special"
+        try:
+                table = __specials[filename]
+        except KeyError:
+                table = LoadSpecials( filename )
+        
+        keys = table.keys()
+        keys.sort()
+        return keys
+
+
+def AllSpecials( table_file ):
+        filename = table_file + "_special"
+        table = {}
+        try:
+                table = __specials[filename]
+        except KeyError:
+                table = LoadSpecials(filename)
+        
+        ret = table.keys()
+        ret.sort()
+        return ret
+        
+
+def NumSpecials( table_file ):
+        filename = table_file + "_special"
+        table = {}
+        try:
+                table = __specials[filename]
+        except KeyError:
+                table = LoadSpecials(filename)
+        return len(table.keys())
+
+def PrintRecord(record):
+        argList = MakeDeclarationString(record.params)
+        if record.category == "Chromium":
+                prefix = "cr"
+        else:
+                prefix = "gl"
+        print '%s %s%s(%s);' % (record.returnType, prefix, record.name, argList )
+        if len(record.props) > 0:
+                print '   /* %s */' % string.join(record.props, ' ')
+
+#ProcessSpecFile("APIspec.txt", PrintRecord)
+