glapi: Add OpenGL ES compatibility mode to scripts.

[android-x86/external-mesa.git] / src / mesa / glapi / gl_offsets.py

diff --git a/src/mesa/glapi/gl_offsets.py b/src/mesa/glapi/gl_offsets.py
index 59f8d37..07db370 100644 (file)
--- 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 % ( \
@@ -45,6 +46,7 @@ class PrintGlOffsets(gl_XML.gl_print_base):
 
                functions = []
                abi_functions = []
+               alias_functions = []
                count = 0
                for f in api.functionIterateByOffset():
                        [category, num] = api.get_category_for_name( f.name )
@@ -54,6 +56,10 @@ class PrintGlOffsets(gl_XML.gl_print_base):
                        else:
                                abi_functions.append( f )
 
+                       if self.es:
+                               # remember functions with aliases
+                               if [f.name] != f.entry_points:
+                                       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(IN_DRI_DRIVER) */'
 
+               if self.es and 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 )