diff options
Diffstat (limited to 'src/mesa/glapi/gen/gl_XML.py')
| -rw-r--r-- | src/mesa/glapi/gen/gl_XML.py | 967 |
1 files changed, 967 insertions, 0 deletions
diff --git a/src/mesa/glapi/gen/gl_XML.py b/src/mesa/glapi/gen/gl_XML.py new file mode 100644 index 00000000000..a10a35e513c --- /dev/null +++ b/src/mesa/glapi/gen/gl_XML.py @@ -0,0 +1,967 @@ +#!/usr/bin/env python + +# (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]> + +import libxml2 +import re, sys, string +import typeexpr + + +def parse_GL_API( file_name, factory = None ): + doc = libxml2.readFile( file_name, None, libxml2.XML_PARSE_XINCLUDE + libxml2.XML_PARSE_NOBLANKS + libxml2.XML_PARSE_DTDVALID + libxml2.XML_PARSE_DTDATTR + libxml2.XML_PARSE_DTDLOAD + libxml2.XML_PARSE_NOENT ) + ret = doc.xincludeProcess() + + if not factory: + factory = gl_item_factory() + + api = factory.create_item( "api", None, None ) + api.process_element( doc ) + + # After the XML has been processed, we need to go back and assign + # dispatch offsets to the functions that request that their offsets + # be assigned by the scripts. Typically this means all functions + # that are not part of the ABI. + + for func in api.functionIterateByCategory(): + if func.assign_offset: + func.offset = api.next_offset; + api.next_offset += 1 + + doc.freeDoc() + + return api + + +def is_attr_true( element, name ): + """Read a name value from an element's attributes. + + The value read from the attribute list must be either 'true' or + 'false'. If the value is 'false', zero will be returned. If the + value is 'true', non-zero will be returned. An exception will be + raised for any other value.""" + + value = element.nsProp( name, None ) + if value == "true": + return 1 + elif value == "false": + return 0 + else: + raise RuntimeError('Invalid value "%s" for boolean "%s".' % (value, name)) + + +class gl_print_base: + """Base class of all API pretty-printers. + + In the model-view-controller pattern, this is the view. Any derived + class will want to over-ride the printBody, printRealHader, and + printRealFooter methods. Some derived classes may want to over-ride + printHeader and printFooter, or even Print (though this is unlikely). + """ + + def __init__(self): + # Name of the script that is generating the output file. + # Every derived class should set this to the name of its + # source file. + + self.name = "a" + + + # License on the *generated* source file. This may differ + # from the license on the script that is generating the file. + # Every derived class should set this to some reasonable + # value. + # + # See license.py for an example of a reasonable value. + + self.license = "The license for this file is unspecified." + + + # The header_tag is the name of the C preprocessor define + # used to prevent multiple inclusion. Typically only + # generated C header files need this to be set. Setting it + # causes code to be generated automatically in printHeader + # and printFooter. + + self.header_tag = None + + + # List of file-private defines that must be undefined at the + # end of the file. This can be used in header files to define + # names for use in the file, then undefine them at the end of + # the header file. + + self.undef_list = [] + return + + + def Print(self, api): + self.printHeader() + self.printBody(api) + self.printFooter() + return + + + def printHeader(self): + """Print the header associated with all files and call the printRealHeader method.""" + + print '/* DO NOT EDIT - This file generated automatically by %s script */' \ + % (self.name) + print '' + print '/*' + print ' * ' + self.license.replace('\n', '\n * ') + print ' */' + print '' + if self.header_tag: + print '#if !defined( %s )' % (self.header_tag) + print '# define %s' % (self.header_tag) + print '' + self.printRealHeader(); + return + + + def printFooter(self): + """Print the header associated with all files and call the printRealFooter method.""" + + self.printRealFooter() + + if self.undef_list: + print '' + for u in self.undef_list: + print "# undef %s" % (u) + + if self.header_tag: + print '' + print '#endif /* !defined( %s ) */' % (self.header_tag) + + + def printRealHeader(self): + """Print the "real" header for the created file. + + In the base class, this function is empty. All derived + classes should over-ride this function.""" + return + + + def printRealFooter(self): + """Print the "real" footer for the created file. + + In the base class, this function is empty. All derived + classes should over-ride this function.""" + return + + + def printPure(self): + """Conditionally define `PURE' function attribute. + + Conditionally defines a preprocessor macro `PURE' that wraps + GCC's `pure' function attribute. The conditional code can be + easilly adapted to other compilers that support a similar + feature. + + The name is also added to the file's undef_list. + """ + self.undef_list.append("PURE") + print """# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590)) +# define PURE __attribute__((pure)) +# else +# define PURE +# endif""" + return + + + def printFastcall(self): + """Conditionally define `FASTCALL' function attribute. + + Conditionally defines a preprocessor macro `FASTCALL' that + wraps GCC's `fastcall' function attribute. The conditional + code can be easilly adapted to other compilers that support a + similar feature. + + The name is also added to the file's undef_list. + """ + + self.undef_list.append("FASTCALL") + print """# if defined(__i386__) && defined(__GNUC__) && !defined(__CYGWIN__) && !defined(__MINGW32__) +# define FASTCALL __attribute__((fastcall)) +# else +# define FASTCALL +# endif""" + return + + + def printVisibility(self, S, s): + """Conditionally define visibility function attribute. + + Conditionally defines a preprocessor macro name S that wraps + GCC's visibility function attribute. The visibility used is + the parameter s. The conditional code can be easilly adapted + to other compilers that support a similar feature. + + The name is also added to the file's undef_list. + """ + + self.undef_list.append(S) + print """# if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))) && defined(__ELF__) +# define %s __attribute__((visibility("%s"))) +# else +# define %s +# endif""" % (S, s, S) + return + + + def printNoinline(self): + """Conditionally define `NOINLINE' function attribute. + + Conditionally defines a preprocessor macro `NOINLINE' that + wraps GCC's `noinline' function attribute. The conditional + code can be easilly adapted to other compilers that support a + similar feature. + + The name is also added to the file's undef_list. + """ + + self.undef_list.append("NOINLINE") + print """# if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590)) +# define NOINLINE __attribute__((noinline)) +# else +# define NOINLINE +# endif""" + return + + +def real_function_name(element): + name = element.nsProp( "name", None ) + alias = element.nsProp( "alias", None ) + + if alias: + return alias + else: + return name + + +def real_category_name(c): + if re.compile("[1-9][0-9]*[.][0-9]+").match(c): + return "GL_VERSION_" + c.replace(".", "_") + else: + return c + + +def classify_category(name, number): + """Based on the category name and number, select a numerical class for it. + + Categories are divided into four classes numbered 0 through 3. The + classes are: + + 0. Core GL versions, sorted by version number. + 1. ARB extensions, sorted by extension number. + 2. Non-ARB extensions, sorted by extension number. + 3. Un-numbered extensions, sorted by extension name. + """ + + try: + core_version = float(name) + except Exception,e: + core_version = 0.0 + + if core_version > 0.0: + cat_type = 0 + key = name + elif name.startswith("GL_ARB_") or name.startswith("GLX_ARB_") or name.startswith("WGL_ARB_"): + cat_type = 1 + key = int(number) + else: + if number != None: + cat_type = 2 + key = int(number) + else: + cat_type = 3 + key = name + + + return [cat_type, key] + + +def create_parameter_string(parameters, include_names): + """Create a parameter string from a list of gl_parameters.""" + + list = [] + for p in parameters: + if p.is_padding: + continue + + if include_names: + list.append( p.string() ) + else: + list.append( p.type_string() ) + + if len(list) == 0: list = ["void"] + + return string.join(list, ", ") + + +class gl_item: + def __init__(self, element, context): + self.context = context + self.name = element.nsProp( "name", None ) + self.category = real_category_name( element.parent.nsProp( "name", None ) ) + return + + +class gl_type( gl_item ): + def __init__(self, element, context): + gl_item.__init__(self, element, context) + self.size = int( element.nsProp( "size", None ), 0 ) + + te = typeexpr.type_expression( None ) + tn = typeexpr.type_node() + tn.size = int( element.nsProp( "size", None ), 0 ) + tn.integer = not is_attr_true( element, "float" ) + tn.unsigned = is_attr_true( element, "unsigned" ) + tn.name = "GL" + self.name + te.set_base_type_node( tn ) + + self.type_expr = te + return + + + def get_type_expression(self): + return self.type_expr + + +class gl_enum( gl_item ): + def __init__(self, element, context): + gl_item.__init__(self, element, context) + self.value = int( element.nsProp( "value", None ), 0 ) + + temp = element.nsProp( "count", None ) + if not temp or temp == "?": + self.default_count = -1 + else: + try: + c = int(temp) + except Exception,e: + raise RuntimeError('Invalid count value "%s" for enum "%s" in function "%s" when an integer was expected.' % (temp, self.name, n)) + + self.default_count = c + + return + + + def priority(self): + """Calculate a 'priority' for this enum name. + + When an enum is looked up by number, there may be many + possible names, but only one is the 'prefered' name. The + priority is used to select which name is the 'best'. + + Highest precedence is given to core GL name. ARB extension + names have the next highest, followed by EXT extension names. + Vendor extension names are the lowest. + """ + + if self.name.endswith( "_BIT" ): + bias = 1 + else: + bias = 0 + + if self.category.startswith( "GL_VERSION_" ): + priority = 0 + elif self.category.startswith( "GL_ARB_" ): + priority = 2 + elif self.category.startswith( "GL_EXT_" ): + priority = 4 + else: + priority = 6 + + return priority + bias + + + +class gl_parameter: + def __init__(self, element, context): + self.name = element.nsProp( "name", None ) + + ts = element.nsProp( "type", None ) + self.type_expr = typeexpr.type_expression( ts, context ) + + temp = element.nsProp( "variable_param", None ) + if temp: + self.count_parameter_list = temp.split( ' ' ) + else: + self.count_parameter_list = [] + + # The count tag can be either a numeric string or the name of + # a variable. If it is the name of a variable, the int(c) + # statement will throw an exception, and the except block will + # take over. + + c = element.nsProp( "count", None ) + try: + count = int(c) + self.count = count + self.counter = None + except Exception,e: + count = 1 + self.count = 0 + self.counter = c + + self.count_scale = int(element.nsProp( "count_scale", None )) + + elements = (count * self.count_scale) + if elements == 1: + elements = 0 + + #if ts == "GLdouble": + # print '/* stack size -> %s = %u (before)*/' % (self.name, self.type_expr.get_stack_size()) + # print '/* # elements = %u */' % (elements) + self.type_expr.set_elements( elements ) + #if ts == "GLdouble": + # print '/* stack size -> %s = %u (after) */' % (self.name, self.type_expr.get_stack_size()) + + self.is_client_only = is_attr_true( element, 'client_only' ) + self.is_counter = is_attr_true( element, 'counter' ) + self.is_output = is_attr_true( element, 'output' ) + + + # Pixel data has special parameters. + + self.width = element.nsProp('img_width', None) + self.height = element.nsProp('img_height', None) + self.depth = element.nsProp('img_depth', None) + self.extent = element.nsProp('img_extent', None) + + self.img_xoff = element.nsProp('img_xoff', None) + self.img_yoff = element.nsProp('img_yoff', None) + self.img_zoff = element.nsProp('img_zoff', None) + self.img_woff = element.nsProp('img_woff', None) + + self.img_format = element.nsProp('img_format', None) + self.img_type = element.nsProp('img_type', None) + self.img_target = element.nsProp('img_target', None) + + self.img_pad_dimensions = is_attr_true( element, 'img_pad_dimensions' ) + self.img_null_flag = is_attr_true( element, 'img_null_flag' ) + self.img_send_null = is_attr_true( element, 'img_send_null' ) + + self.is_padding = is_attr_true( element, 'padding' ) + return + + + def compatible(self, other): + return 1 + + + def is_array(self): + return self.is_pointer() + + + def is_pointer(self): + return self.type_expr.is_pointer() + + + def is_image(self): + if self.width: + return 1 + else: + return 0 + + + def is_variable_length(self): + return len(self.count_parameter_list) or self.counter + + + def is_64_bit(self): + count = self.type_expr.get_element_count() + if count: + if (self.size() / count) == 8: + return 1 + else: + if self.size() == 8: + return 1 + + return 0 + + + def string(self): + return self.type_expr.original_string + " " + self.name + + + def type_string(self): + return self.type_expr.original_string + + + def get_base_type_string(self): + return self.type_expr.get_base_name() + + + def get_dimensions(self): + if not self.width: + return [ 0, "0", "0", "0", "0" ] + + dim = 1 + w = self.width + h = "1" + d = "1" + e = "1" + + if self.height: + dim = 2 + h = self.height + + if self.depth: + dim = 3 + d = self.depth + + if self.extent: + dim = 4 + e = self.extent + + return [ dim, w, h, d, e ] + + + def get_stack_size(self): + return self.type_expr.get_stack_size() + + + def size(self): + if self.is_image(): + return 0 + else: + return self.type_expr.get_element_size() + + + def get_element_count(self): + c = self.type_expr.get_element_count() + if c == 0: + return 1 + + return c + + + def size_string(self, use_parens = 1): + s = self.size() + if self.counter or self.count_parameter_list: + list = [ "compsize" ] + + if self.counter and self.count_parameter_list: + list.append( self.counter ) + elif self.counter: + list = [ self.counter ] + + if s > 1: + list.append( str(s) ) + + if len(list) > 1 and use_parens : + return "(%s)" % (string.join(list, " * ")) + else: + return string.join(list, " * ") + + elif self.is_image(): + return "compsize" + else: + return str(s) + + + def format_string(self): + if self.type_expr.original_string == "GLenum": + return "0x%x" + else: + return self.type_expr.format_string() + + + +class gl_function( gl_item ): + def __init__(self, element, context): + self.context = context + self.name = None + + self.entry_points = [] + self.return_type = "void" + self.parameters = [] + self.offset = -1 + self.initialized = 0 + self.images = [] + + self.assign_offset = 0 + + self.static_entry_points = [] + + # Track the parameter string (for the function prototype) + # for each entry-point. This is done because some functions + # change their prototype slightly when promoted from extension + # to ARB extension to core. glTexImage3DEXT and glTexImage3D + # are good examples of this. Scripts that need to generate + # code for these differing aliases need to real prototype + # for each entry-point. Otherwise, they may generate code + # that won't compile. + + self.parameter_strings = {} + + self.process_element( element ) + + return + + + def process_element(self, element): + name = element.nsProp( "name", None ) + alias = element.nsProp( "alias", None ) + + if is_attr_true(element, "static_dispatch"): + self.static_entry_points.append(name) + + self.entry_points.append( name ) + if alias: + true_name = alias + else: + true_name = name + + # Only try to set the offset when a non-alias + # entry-point is being processes. + + offset = element.nsProp( "offset", None ) + if offset: + try: + o = int( offset ) + self.offset = o + except Exception, e: + self.offset = -1 + if offset == "assign": + self.assign_offset = 1 + + + if not self.name: + self.name = true_name + elif self.name != true_name: + raise RuntimeError("Function true name redefined. Was %s, now %s." % (self.name, true_name)) + + + # There are two possible cases. The first time an entry-point + # with data is seen, self.initialized will be 0. On that + # pass, we just fill in the data. The next time an + # entry-point with data is seen, self.initialized will be 1. + # On that pass we have to make that the new values match the + # valuse from the previous entry-point. + + parameters = [] + return_type = "void" + child = element.children + while child: + if child.type == "element": + if child.name == "return": + return_type = child.nsProp( "type", None ) + elif child.name == "param": + param = self.context.factory.create_item( "parameter", child, self.context) + parameters.append( param ) + + child = child.next + + + if self.initialized: + if self.return_type != return_type: + raise RuntimeError( "Return type changed in %s. Was %s, now %s." % (name, self.return_type, return_type)) + + if len(parameters) != len(self.parameters): + raise RuntimeError( "Parameter count mismatch in %s. Was %d, now %d." % (name, len(self.parameters), len(parameters))) + + for j in range(0, len(parameters)): + p1 = parameters[j] + p2 = self.parameters[j] + if not p1.compatible( p2 ): + raise RuntimeError( 'Parameter type mismatch in %s. "%s" was "%s", now "%s".' % (name, p2.name, p2.type_expr.original_string, p1.type_expr.original_string)) + + + if true_name == name or not self.initialized: + self.return_type = return_type + self.parameters = parameters + + for param in self.parameters: + if param.is_image(): + self.images.append( param ) + + if element.children: + self.initialized = 1 + self.parameter_strings[name] = create_parameter_string(parameters, 1) + else: + self.parameter_strings[name] = None + + return + + + def get_images(self): + """Return potentially empty list of input images.""" + return self.images + + + def parameterIterator(self): + return self.parameters.__iter__(); + + + def get_parameter_string(self, entrypoint = None): + if entrypoint: + s = self.parameter_strings[ entrypoint ] + if s: + return s + + return create_parameter_string( self.parameters, 1 ) + + def get_called_parameter_string(self): + p_string = "" + comma = "" + + for p in self.parameterIterator(): + p_string = p_string + comma + p.name + comma = ", " + + return p_string + + + def is_abi(self): + return (self.offset >= 0 and not self.assign_offset) + + def is_static_entry_point(self, name): + return name in self.static_entry_points + + def dispatch_name(self): + if self.name in self.static_entry_points: + return self.name + else: + return "_dispatch_stub_%u" % (self.offset) + + def static_name(self, name): + if name in self.static_entry_points: + return name + else: + return "_dispatch_stub_%u" % (self.offset) + + +class gl_item_factory: + """Factory to create objects derived from gl_item.""" + + def create_item(self, item_name, element, context): + if item_name == "function": + return gl_function(element, context) + if item_name == "type": + return gl_type(element, context) + elif item_name == "enum": + return gl_enum(element, context) + elif item_name == "parameter": + return gl_parameter(element, context) + elif item_name == "api": + return gl_api(self) + else: + return None + + +class gl_api: + def __init__(self, factory): + self.functions_by_name = {} + self.enums_by_name = {} + self.types_by_name = {} + + self.category_dict = {} + self.categories = [{}, {}, {}, {}] + + self.factory = factory + + self.next_offset = 0 + + typeexpr.create_initial_types() + return + + + def process_element(self, doc): + element = doc.children + while element.type != "element" or element.name != "OpenGLAPI": + element = element.next + + if element: + self.process_OpenGLAPI(element) + return + + + def process_OpenGLAPI(self, element): + child = element.children + while child: + if child.type == "element": + if child.name == "category": + self.process_category( child ) + elif child.name == "OpenGLAPI": + self.process_OpenGLAPI( child ) + + child = child.next + + return + + + def process_category(self, cat): + cat_name = cat.nsProp( "name", None ) + cat_number = cat.nsProp( "number", None ) + + [cat_type, key] = classify_category(cat_name, cat_number) + self.categories[cat_type][key] = [cat_name, cat_number] + + child = cat.children + while child: + if child.type == "element": + if child.name == "function": + func_name = real_function_name( child ) + + temp_name = child.nsProp( "name", None ) + self.category_dict[ temp_name ] = [cat_name, cat_number] + + if self.functions_by_name.has_key( func_name ): + func = self.functions_by_name[ func_name ] + func.process_element( child ) + else: + func = self.factory.create_item( "function", child, self ) + self.functions_by_name[ func_name ] = func + + if func.offset >= self.next_offset: + self.next_offset = func.offset + 1 + + + elif child.name == "enum": + enum = self.factory.create_item( "enum", child, self ) + self.enums_by_name[ enum.name ] = enum + elif child.name == "type": + t = self.factory.create_item( "type", child, self ) + self.types_by_name[ "GL" + t.name ] = t + + + child = child.next + + return + + + def functionIterateByCategory(self, cat = None): + """Iterate over functions by category. + + If cat is None, all known functions are iterated in category + order. See classify_category for details of the ordering. + Within a category, functions are sorted by name. If cat is + not None, then only functions in that category are iterated. + """ + lists = [{}, {}, {}, {}] + + for func in self.functionIterateAll(): + [cat_name, cat_number] = self.category_dict[func.name] + + if (cat == None) or (cat == cat_name): + [func_cat_type, key] = classify_category(cat_name, cat_number) + + if not lists[func_cat_type].has_key(key): + lists[func_cat_type][key] = {} + + lists[func_cat_type][key][func.name] = func + + + functions = [] + for func_cat_type in range(0,4): + keys = lists[func_cat_type].keys() + keys.sort() + + for key in keys: + names = lists[func_cat_type][key].keys() + names.sort() + + for name in names: + functions.append(lists[func_cat_type][key][name]) + + return functions.__iter__() + + + def functionIterateByOffset(self): + max_offset = -1 + for func in self.functions_by_name.itervalues(): + if func.offset > max_offset: + max_offset = func.offset + + + temp = [None for i in range(0, max_offset + 1)] + for func in self.functions_by_name.itervalues(): + if func.offset != -1: + temp[ func.offset ] = func + + + list = [] + for i in range(0, max_offset + 1): + if temp[i]: + list.append(temp[i]) + + return list.__iter__(); + + + def functionIterateAll(self): + return self.functions_by_name.itervalues() + + + def enumIterateByName(self): + keys = self.enums_by_name.keys() + keys.sort() + + list = [] + for enum in keys: + list.append( self.enums_by_name[ enum ] ) + + return list.__iter__() + + + def categoryIterate(self): + """Iterate over categories. + + Iterate over all known categories in the order specified by + classify_category. Each iterated value is a tuple of the + name and number (which may be None) of the category. + """ + + list = [] + for cat_type in range(0,4): + keys = self.categories[cat_type].keys() + keys.sort() + + for key in keys: + list.append(self.categories[cat_type][key]) + + return list.__iter__() + + + def get_category_for_name( self, name ): + if self.category_dict.has_key(name): + return self.category_dict[name] + else: + return ["<unknown category>", None] + + + def typeIterate(self): + return self.types_by_name.itervalues() + + + def find_type( self, type_name ): + if type_name in self.types_by_name: + return self.types_by_name[ type_name ].type_expr + else: + print "Unable to find base type matching \"%s\"." % (type_name) + return None |