glapi: Add OpenGL ES compatibility mode to scripts.

When the mode is on, the scripts would generate headers that are
suitable for OpenGL ES.  There are two differences.  One is that they
will generate function prototypes for OpenGL ES specific functions.  The
other is that, when a function has multiple names, SET/GET/CALL macros
would be generated for each of names.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>

1 files changed, 21 insertions, 4 deletions

diff --git a/src/mesa/glapi/gl_offsets.py b/src/mesa/glapi/gl_offsets.py
index b8b509d09f..54867b3463 100644
--- a/src/mesa/glapi/gl_offsets.py
+++ b/src/mesa/glapi/gl_offsets.py
@@ -30,9 +30,10 @@ import license
 import sys, getopt
 
 class PrintGlOffsets(gl_XML.gl_print_base):
-	def __init__(self):
+	def __init__(self, es=False):
 		gl_XML.gl_print_base.__init__(self)
 
+		self.es = es
 		self.name = "gl_offsets.py (from Mesa)"
 		self.header_tag = '_GLAPI_OFFSETS_H_'
 		self.license = license.bsd_license_template % ( \
@@ -46,6 +47,7 @@ class PrintGlOffsets(gl_XML.gl_print_base):
 
 		functions = []
 		abi_functions = []
+		alias_functions = []
 		count = 0
 		for f in api.functionIterateByOffset():
 			if not f.is_abi():
@@ -54,6 +56,10 @@ class PrintGlOffsets(gl_XML.gl_print_base):
 			else:
 				abi_functions.append( f )
 
+			if self.es:
+				# remember functions with aliases
+				if len(f.entry_points) > 1:
+					alias_functions.append(f)
 
 		for f in abi_functions:
 			print '#define _gloffset_%s %d' % (f.name, f.offset)
@@ -78,26 +84,37 @@ class PrintGlOffsets(gl_XML.gl_print_base):
 		print ''
 		print '#endif /* !defined(_GLAPI_USE_REMAP_TABLE) */'
 
+		if alias_functions:
+			print ''
+			print '/* define aliases for compatibility */'
+			for f in alias_functions:
+				for name in f.entry_points:
+					if name != f.name:
+						print '#define _gloffset_%s _gloffset_%s' % (name, f.name)
 		return
 
 
 def show_usage():
-	print "Usage: %s [-f input_file_name]" % sys.argv[0]
+	print "Usage: %s [-f input_file_name] [-c]" % sys.argv[0]
+	print "    -c        Enable compatibility with OpenGL ES."
 	sys.exit(1)
 
 if __name__ == '__main__':
 	file_name = "gl_API.xml"
     
 	try:
-		(args, trail) = getopt.getopt(sys.argv[1:], "f:")
+		(args, trail) = getopt.getopt(sys.argv[1:], "f:c")
 	except Exception,e:
 		show_usage()
 
+	es = False
 	for (arg,val) in args:
 		if arg == "-f":
 			file_name = val
+		elif arg == "-c":
+			es = True
 
 	api = gl_XML.parse_GL_API( file_name )
 
-	printer = PrintGlOffsets()
+	printer = PrintGlOffsets(es)
 	printer.Print( api )