X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=scripts%2Fextgen.py;h=b3ed9c8f6d6fa033fc9916cebbf778d98a7f61b6;hb=e79c72cf90dacaa47d82d65d3e6c4252f055f454;hp=ec57e2efb912fd9287185d7d5f0ab5bd9aa8609c;hpb=bdced13c0814d1a860573a0ac19964da2ac4d5e1;p=libs%2Fgl.git

diff --git a/scripts/extgen.py b/scripts/extgen.py
index ec57e2ef..b3ed9c8f 100755
--- a/scripts/extgen.py
+++ b/scripts/extgen.py
@@ -31,7 +31,10 @@ if sys.argv[i].startswith("gl"):
 	i += 1
 
 target_ext = sys.argv[i]
+backport_ext = None
+deprecated_version = None
 out_base = None
+ignore_things = []
 if target_ext.endswith(".glext"):
 	fn = target_ext
 	target_ext = None
@@ -44,8 +47,15 @@ if target_ext.endswith(".glext"):
 		elif parts[0]=="core_version":
 			if parts[1]==target_api:
 				core_version = parts[2]
+		elif parts[0]=="deprecated":
+			if parts[1]==target_api:
+				deprecated_version = parts[2]
 		elif parts[0]=="secondary":
 			secondary.append(parts[1])
+		elif parts[0]=="backport":
+			backport_ext = parts[1]
+		elif parts[0]=="ignore":
+			ignore_things.append(parts[1])
 	if i+1<len(sys.argv):
 		out_base = os.path.splitext(sys.argv[i+1])[0]
 else:
@@ -55,11 +65,13 @@ else:
 		core_version = secondary.pop(0)
 
 ext_type = target_ext.split('_')[0]
-backport_ext = None
 
 if core_version:
 	core_version = map(int, core_version.split('.'))
 
+if deprecated_version:
+	deprecated_version = map(int, deprecated_version.split('.'))
+
 if not out_base:
 	out_base = target_ext.lower()
 
@@ -73,8 +85,10 @@ class Thing:
 		self.name = name
 		self.kind = kind
 		self.version = None
+		self.deprecated_version = None
 		self.extension = None
 		self.supported_apis = {}
+		self.deprecated = {}
 		self.aliases = []
 		self.sources = []
 
@@ -95,7 +109,9 @@ class Extension:
 	def __init__(self, name):
 		self.name = name
 		self.supported_apis = []
-		self.ext_type = name[0:name.find('_')]
+		underscore = name.find('_')
+		self.ext_type = name[0:underscore]
+		self.base_name = name[underscore+1:]
 
 extensions = {}
 things = {}
@@ -186,8 +202,11 @@ def parse_feature(feat):
 
 			for t in itertools.chain(commands, enums):
 				name = t.getAttribute("name")
-				if profile!="core" and name in things:
-					del things[name]
+				if name in things:
+					if profile!="core":
+						del things[name]
+					else:
+						things[name].deprecated.setdefault(api, version)
 
 def parse_extension(ext):
 	ext_name = ext.getAttribute("name")
@@ -217,6 +236,9 @@ def parse_extension(ext):
 		enums = get_nested_elements(req, "enum")
 		for t in itertools.chain(commands, enums):
 			name = t.getAttribute("name")
+			if name in ignore_things:
+				continue
+
 			thing = things.get(name)
 			if thing:
 				if thing.extension and extension.name!=target_ext:
@@ -315,15 +337,58 @@ enums = filter(is_relevant, enums)
 enums.sort(key=(lambda e: e.value))
 
 # Some final preparations for creating the files
+core_version_candidates = {}
+min_deprecated_version = [999, 0]
+backport_ext_candidates = []
 for t in itertools.chain(funcs, enums):
 	if target_api in t.supported_apis and t.supported_apis[target_api]!="ext":
 		t.version = t.supported_apis[target_api]
-	if not core_version:
-		core_version = t.version
+		if t.version:
+			ver_tuple = tuple(t.version)
+			core_version_candidates[ver_tuple] = core_version_candidates.get(ver_tuple, 0)+1
+
+	if target_api in t.deprecated:
+		t.deprecated_version = t.deprecated[target_api]
+		min_deprecated_version = min(min_deprecated_version, t.deprecated_version)
+	else:
+		min_deprecated_version = None
 
 	# Things in backport extensions don't acquire an extension suffix
 	if t.extension and not t.name.endswith(ext_type) and target_api in t.supported_apis:
-		backport_ext = t.extension
+		if t.extension not in backport_ext_candidates:
+			backport_ext_candidates.append(t.extension)
+
+if not core_version and core_version_candidates:
+	core_version_candidates = list((v, k) for k, v in core_version_candidates.items())
+	if len(core_version_candidates)>1:
+		core_version_candidates.sort(reverse=True)
+		if core_version_candidates[1][0]+1>=core_version_candidates[0][0]:
+			ver0 = core_version_candidates[0][1]
+			ver1 = core_version_candidates[1][1]
+			print "Warning: multiple likely core version candidates: %d.%d %d.%d"%(ver0[0], ver0[1], ver1[0], ver1[1])
+	core_version = core_version_candidates[0][1]
+
+if not deprecated_version:
+	deprecated_version = min_deprecated_version
+
+if backport_ext:
+	if backport_ext=="none":
+		backport_ext = None
+	else:
+		backport_ext = extensions[backport_ext]
+
+		if backport_ext not in backport_ext_candidates:
+			print "Warning: explicitly specified backport extension %s does not look like a backport extension"
+elif backport_ext_candidates:
+	if len(backport_ext_candidates)>1:
+		print "Warning: multiple backport extension candidates: %s"%(" ".join(e.name for e in backport_ext_candidates))
+
+	for e in backport_ext_candidates:
+		if e.base_name==target_ext.base_name:
+			backport_ext = e
+
+	if not backport_ext and len(backport_ext_candidates)==1:
+		print "Warning: potential backport extension has mismatched name: %s"%backport_ext_candidates[0].name
 
 for f in funcs:
 	f.typedef = "FPtr_%s"%f.name
@@ -452,14 +517,18 @@ for f in funcs:
 
 out.write("\nExtension::SupportLevel init_%s()\n{\n"%target_ext.name.lower())
 if core_version:
-	out.write("\tif(is_version_at_least(%d, %d)"%tuple(core_version))
+	out.write("\tif(is_disabled(\"GL_%s\"))\n\t\treturn Extension::UNSUPPORTED;\n"%target_ext.name)
+	out.write("\tif(")
 	if backport_ext:
-		out.write(" || is_supported(\"GL_%s\")"%backport_ext.name)
-	out.write(")\n\t{\n")
+		out.write("is_supported(\"GL_%s\") || "%backport_ext.name)
+	out.write("is_supported(Version(%d, %d)"%tuple(core_version))
+	if deprecated_version:
+		out.write(", Version(%d, %d)"%tuple(deprecated_version))
+	out.write("))\n\t{\n")
 	for f in funcs:
 		if target_api in f.supported_apis:
 			gpa_suffix = ""
-			if f.version<=[1, 1]:
+			if f.version is not None and f.version<=[1, 1]:
 				gpa_suffix = "_1_1"
 			out.write("\t\t%s = reinterpret_cast<%s>(GET_PROC_ADDRESS%s(%s));\n"%(f.name, f.typedef, gpa_suffix, f.name))
 	out.write("\t\treturn Extension::CORE;\n")
@@ -467,11 +536,21 @@ if core_version:
 if source_ext and source_ext!=backport_ext:
 	out.write("\tif(is_supported(\"GL_%s\"))\n\t{\n"%(source_ext.name))
 	for f in funcs:
-		s = f
 		if f.sources:
-			s = f.sources[0]
-		if target_api in s.supported_apis:
-			out.write("\t\t%s = reinterpret_cast<%s>(GET_PROC_ADDRESS(%s));\n"%(f.name, f.typedef, s.name))
+			src = None
+			for s in f.sources:
+				if s.name.endswith(source_ext.ext_type):
+					src = s
+					break
+			if not src:
+				src = f.sources[0]
+		else:
+			src = f
+
+		if target_api in src.supported_apis:
+			if not src.name.endswith(source_ext.ext_type):
+				print "Warning: %s does not match extension type %s"%(src.name, source_ext.ext_type)
+			out.write("\t\t%s = reinterpret_cast<%s>(GET_PROC_ADDRESS(%s));\n"%(f.name, f.typedef, src.name))
 	out.write("\t\treturn Extension::EXTENSION;\n")
 	out.write("\t}\n")
 out.write("\treturn Extension::UNSUPPORTED;\n")