Convert command buffer autogen to python3

The python scripts to generate GLES2/raster/WebGPU command buffer was
still running with vpython which is 2.7. Update the PRESUBMIT to run
with python3 and fix python3 compatibility issues.

Bug: none
Change-Id: Ibe11208afb11bfe9870dc261865a7c909f76bde2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3577186
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Reviewed-by: Derek Schuff <dschuff@chromium.org>
Commit-Queue: Kyle Charbonneau <kylechar@chromium.org>
Cr-Commit-Position: refs/heads/main@{#991501}

gpu/command_buffer/PRESUBMIT.py

@@ -65,7 +65,7 @@ def CommonChecks(input_api, output_api):
           input_api.Command(
               name='build_gles2_cmd_buffer',
               cmd=[
-                  input_api.python_executable, 'build_gles2_cmd_buffer.py',
+                  input_api.python3_executable, 'build_gles2_cmd_buffer.py',
                   '--check', '--output-dir=' + temp_dir
               ],
               kwargs={},
@@ -75,7 +75,7 @@ def CommonChecks(input_api, output_api):
           input_api.Command(
               name='build_raster_cmd_buffer',
               cmd=[
-                  input_api.python_executable, 'build_raster_cmd_buffer.py',
+                  input_api.python3_executable, 'build_raster_cmd_buffer.py',
                   '--check', '--output-dir=' + temp_dir
               ],
               kwargs={},
@@ -85,7 +85,7 @@ def CommonChecks(input_api, output_api):
           input_api.Command(
               name='build_webgpu_cmd_buffer',
               cmd=[
-                  input_api.python_executable, 'build_webgpu_cmd_buffer.py',
+                  input_api.python3_executable, 'build_webgpu_cmd_buffer.py',
                   '--check', '--output-dir=' + temp_dir
               ],
               kwargs={},

gpu/command_buffer/build_cmd_buffer_lib.py

@@ -682,7 +682,7 @@ def _Namespace():
 def Grouper(n, iterable, fillvalue=None):
   """Collect data into fixed-length chunks or blocks"""
   args = [iter(iterable)] * n
-  return itertools.izip_longest(fillvalue=fillvalue, *args)
+  return itertools.zip_longest(fillvalue=fillvalue, *args)
 
 
 def SplitWords(input_string):
@@ -831,7 +831,7 @@ def __init__(self, filename, year):
     except OSError as e:
       if e.errno == errno.EEXIST:
         pass
-    self._file = open(filename, 'wb')
+    self._file = open(filename, 'w')
 
   def __enter__(self):
     self._file.write(self._ENTER_MSG)
@@ -1477,7 +1477,7 @@ def WriteGLES2ImplementationUnitTest(self, func, f):
 """
         for invalid_arg in constants:
           gl_arg_strings = []
-          invalid = invalid_arg.GetInvalidArg(func)
+          invalid = invalid_arg.GetInvalidArg(0)
           for arg in func.GetOriginalArgs():
             if arg is invalid_arg:
               gl_arg_strings.append(invalid[0])
@@ -5923,7 +5923,7 @@ def WriteCmdFlag(self, f):
     """Writes the cmd cmd_flags constant."""
     # By default trace only at the highest level 3.
     trace_level = int(self.GetInfo('trace_level', default = 3))
-    if trace_level not in xrange(0, 4):
+    if trace_level not in range(0, 4):
       raise KeyError("Unhandled trace_level: %d" % trace_level)
 
     cmd_flags = ('CMD_FLAG_SET_TRACE_LEVEL(%d)' % trace_level)
@@ -6351,11 +6351,11 @@ def GetFunctionInfo(self, name):
   def Log(self, msg):
     """Prints something if verbose is true."""
     if self.verbose:
-      print msg
+      print(msg)
 
   def Error(self, msg):
     """Prints an error."""
-    print "Error: %s" % msg
+    print("Error: %s" % msg)
     self.errors += 1
 
   def ParseGLH(self, filename):
@@ -6703,7 +6703,7 @@ def WriteStates(test_prev):
             continue
           if state['type'] == 'FrontBack':
             num_states = len(state['states'])
-            for ndx, group in enumerate(Grouper(num_states / 2,
+            for ndx, group in enumerate(Grouper(num_states // 2,
                                         state['states'])):
               if test_prev:
                 f.write("  if (")
@@ -6992,7 +6992,7 @@ def WriteServiceContextStateTestHelpers(self, filename):
         state = _STATE_INFO[state_name]
         if state['type'] == 'FrontBack':
           num_states = len(state['states'])
-          for ndx, group in enumerate(Grouper(num_states / 2,
+          for ndx, group in enumerate(Grouper(num_states // 2,
                                               state['states'])):
             args = []
             for item in group:
@@ -7424,13 +7424,13 @@ def WritePepperGLES2Interface(self, filename, dev):
         f.write("#include \"ppapi/c/ppb_opengles2.h\"\n\n")
       else:
         f.write("\n#ifndef __gl2_h_\n")
-        for (k, v) in _GL_TYPES.iteritems():
+        for (k, v) in _GL_TYPES.items():
           f.write("typedef %s %s;\n" % (v, k))
         f.write("#ifdef _WIN64\n")
-        for (k, v) in _GL_TYPES_64.iteritems():
+        for (k, v) in _GL_TYPES_64.items():
           f.write("typedef %s %s;\n" % (v, k))
         f.write("#else\n")
-        for (k, v) in _GL_TYPES_32.iteritems():
+        for (k, v) in _GL_TYPES_32.items():
           f.write("typedef %s %s;\n" % (v, k))
         f.write("#endif  // _WIN64\n")
         f.write("#endif  // __gl2_h_\n\n")

gpu/command_buffer/build_gles2_cmd_buffer.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
@@ -4318,7 +4318,7 @@ def main(argv):
                               chromium_root_dir)
 
   if gen.errors > 0:
-    print "build_gles2_cmd_buffer.py: Failed with %d errors" % gen.errors
+    print("build_gles2_cmd_buffer.py: Failed with %d errors" % gen.errors)
     return 1
 
   check_failed_filenames = []
@@ -4329,10 +4329,10 @@ def main(argv):
         check_failed_filenames.append(filename)
 
   if len(check_failed_filenames) > 0:
-    print 'Please run gpu/command_buffer/build_gles2_cmd_buffer.py'
-    print 'Failed check on autogenerated command buffer files:'
+    print('Please run gpu/command_buffer/build_gles2_cmd_buffer.py')
+    print('Failed check on autogenerated command buffer files:')
     for filename in check_failed_filenames:
-      print filename
+      print(filename)
     return 1
 
   return 0

gpu/command_buffer/build_raster_cmd_buffer.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Copyright 2018 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
@@ -468,7 +468,7 @@ def main(argv):
                               chromium_root_dir)
 
   if gen.errors > 0:
-    print "build_raster_cmd_buffer.py: Failed with %d errors" % gen.errors
+    print("build_raster_cmd_buffer.py: Failed with %d errors" % gen.errors)
     return 1
 
   check_failed_filenames = []
@@ -479,10 +479,10 @@ def main(argv):
         check_failed_filenames.append(filename)
 
   if len(check_failed_filenames) > 0:
-    print 'Please run gpu/command_buffer/build_raster_cmd_buffer.py'
-    print 'Failed check on autogenerated command buffer files:'
+    print('Please run gpu/command_buffer/build_raster_cmd_buffer.py')
+    print('Failed check on autogenerated command buffer files:')
     for filename in check_failed_filenames:
-      print filename
+      print(filename)
     return 1
 
   return 0

gpu/command_buffer/build_webgpu_cmd_buffer.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Copyright 2018 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
@@ -168,7 +168,7 @@ def main(argv):
                               chromium_root_dir)
 
   if gen.errors > 0:
-    print "build_webgpu_cmd_buffer.py: Failed with %d errors" % gen.errors
+    print("build_webgpu_cmd_buffer.py: Failed with %d errors" % gen.errors)
     return 1
 
   check_failed_filenames = []
@@ -179,10 +179,10 @@ def main(argv):
         check_failed_filenames.append(filename)
 
   if len(check_failed_filenames) > 0:
-    print 'Please run gpu/command_buffer/build_webgpu_cmd_buffer.py'
-    print 'Failed check on autogenerated command buffer files:'
+    print('Please run gpu/command_buffer/build_webgpu_cmd_buffer.py')
+    print('Failed check on autogenerated command buffer files:')
     for filename in check_failed_filenames:
-      print filename
+      print(filename)
     return 1
 
   return 0

gpu/command_buffer/common/gles2_cmd_format_autogen.h

@@ -11,9 +11,9 @@
 #ifndef GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_AUTOGEN_H_
 #define GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_AUTOGEN_H_
 
-#define GL_SYNC_FLUSH_COMMANDS_BIT 0x00000001
-#define GL_SYNC_GPU_COMMANDS_COMPLETE 0x9117
 #define GL_SCANOUT_CHROMIUM 0x6000
+#define GL_SYNC_GPU_COMMANDS_COMPLETE 0x9117
+#define GL_SYNC_FLUSH_COMMANDS_BIT 0x00000001
 
 struct ActiveTexture {
   typedef ActiveTexture ValueType;

ppapi/api/ppb_opengles2.idl

@@ -52,19 +52,19 @@ describe {
 #include "ppapi/c/pp_resource.h"
 
 #ifndef __gl2_h_
-typedef void GLvoid;
-typedef int GLsizei;
-typedef unsigned short GLushort;
-typedef short GLshort;
-typedef unsigned char GLubyte;
 typedef unsigned int GLenum;
-typedef int GLint;
 typedef unsigned char GLboolean;
 typedef unsigned int GLbitfield;
-typedef float GLfloat;
-typedef float GLclampf;
 typedef signed char GLbyte;
+typedef short GLshort;
+typedef int GLint;
+typedef int GLsizei;
+typedef unsigned char GLubyte;
+typedef unsigned short GLushort;
 typedef unsigned int GLuint;
+typedef float GLfloat;
+typedef float GLclampf;
+typedef void GLvoid;
 typedef int GLfixed;
 typedef int GLclampx;
 #ifdef _WIN64