Pepper2 Graphics3D implementation - browser side.

BUG=46374
TEST=opengl demos work on Pepper2

Review URL: http://codereview.chromium.org/3020049

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@56401 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 135 insertions, 24 deletions

diff --git a/gpu/command_buffer/build_gles2_cmd_buffer.py b/gpu/command_buffer/build_gles2_cmd_buffer.py
index f747f7a..d1c7935 100755
--- a/gpu/command_buffer/build_gles2_cmd_buffer.py
+++ b/gpu/command_buffer/build_gles2_cmd_buffer.py
@@ -16,7 +16,7 @@ _SIZE_OF_UINT32 = 4
 _SIZE_OF_COMMAND_HEADER = 4
 _FIRST_SPECIFIC_COMMAND_ID = 256
 
-_LICENSE = """// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+_LICENSE = """// Copyright (c) 2010 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.
 
@@ -32,6 +32,25 @@ _LICENSE = """// Copyright (c) 2009 The Chromium Authors. All rights reserved.
 #
 # *) All GLenums have been changed to GLenumTypeOfEnum
 #
+_GL_TYPES = {
+  'GLenum': 'unsigned int',
+  'GLboolean': 'unsigned char',
+  'GLbitfield': 'unsigned int',
+  'GLbyte': 'signed char',
+  'GLshort': 'short',
+  'GLint': 'int',
+  'GLsizei': 'int',
+  'GLubyte': 'unsigned char',
+  'GLushort': 'unsigned short',
+  'GLuint': 'unsigned int',
+  'GLfloat': 'float',
+  'GLclampf': 'float',
+  'GLvoid': 'void',
+  'GLfixed': 'int',
+  'GLclampx': 'int',
+  'GLintptr': 'khronos_intptr_t',
+  'GLsizeiptr': 'khronos_ssize_t',
+}
 _GL_FUNCTIONS = """
 GL_APICALL void         GL_APIENTRY glActiveTexture (GLenum texture);
 GL_APICALL void         GL_APIENTRY glAttachShader (GLidProgram program, GLidShader shader);
@@ -1565,11 +1584,15 @@ class CWriter(object):
     if splitter >= 0 and not string[splitter + 1] == '=' and splitter < 80:
       return splitter
     parts = string.split('(')
+    fptr = re.compile('\*\w*\)')
     if len(parts) > 1:
       splitter = len(parts[0])
       for ii in range(1, len(parts)):
+        # Don't split on the dot in "if (.condition)".
         if (not parts[ii - 1][-3:] == "if " and
-            (len(parts[ii]) > 0 and not parts[ii][0] == ")")
+            # Don't split "(.)" or "(.*fptr)".
+            (len(parts[ii]) > 0 and
+                not parts[ii][0] == ")" and not fptr.match(parts[ii]))
             and splitter < 80):
           return splitter
         splitter += len(parts[ii]) + 1
@@ -1621,12 +1644,17 @@ class CHeaderWriter(CWriter):
 
   _non_alnum_re = re.compile(r'[^a-zA-Z0-9]')
 
-  def __init__(self, filename, file_comment = None):
+  def __init__(self, filename, file_comment = None, guard_depth = None):
     CWriter.__init__(self, filename)
 
-    base = os.path.dirname(
-        os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-    hpath = os.path.abspath(filename)[len(base) + 1:]
+    if guard_depth == None:
+        hpath = os.path.relpath(filename)
+    else:
+        base = os.path.abspath(filename)
+        for i in xrange(0, guard_depth):
+            base = os.path.dirname(base)
+        hpath = os.path.relpath(base)
+
     self.guard = self._non_alnum_re.sub('_', hpath).upper() + '_'
 
     self.Write(_LICENSE)
@@ -5056,9 +5084,78 @@ class GLGenerator(object):
           'post': post,
         })
       pre = '  '
-    file.Write("}\n");
+    file.Write("}\n\n");
+    file.Close()
+
+  def WritePepperGLES2Interface(self, filename):
+    """Writes the Pepper OpenGLES interface definition."""
+    file = CHeaderWriter(
+        filename,
+        "// This interface is used to access common and lite profile OpenGL ES "
+        "2.0\n// functions.\n")
+
+    file.Write("#include \"../GLES2/khrplatform.h\"\n\n")
+
+    file.Write("#define PPB_OPENGLES_INTERFACE \"PPB_OpenGLES;2.0\"\n\n")
+
+    for (k, v) in _GL_TYPES.iteritems():
+      file.Write("typedef %s %s;\n" % (v, k))
+
+    file.Write("\ntypedef struct _ppb_OpenGLES {\n")
+    for func in self.original_functions:
+      file.Write("  %s (*%s)(%s);\n" %
+                 (func.return_type, func.name,
+                  func.MakeTypedOriginalArgString("")))
+    file.Write("} PPB_OpenGLES;\n\n")
+
     file.Close()
 
+  def WritePepperGLES2Implementation(self, filename):
+    """Writes the Pepper OpenGLES interface implementation."""
+
+    file = CWriter(filename)
+    file.Write(_LICENSE)
+    file.Write("// This file is auto-generated. DO NOT EDIT!\n\n")
+
+    file.Write("#include \"webkit/glue/plugins/pepper_graphics_3d.h\"\n\n")
+
+    file.Write("#include \"gpu/command_buffer/client/gles2_implementation.h\"")
+    file.Write("\n#include \"third_party/ppapi/c/ppb_opengles.h\"\n\n")
+
+    file.Write("namespace pepper {\n\n")
+    file.Write("namespace {\n\n")
+
+    for func in self.original_functions:
+      file.Write("%s %s(%s) {\n" %
+                 (func.return_type, func.name,
+                  func.MakeTypedOriginalArgString("")))
+      return_string = "return "
+      if func.return_type == "void":
+        return_string = ""
+      file.Write("  %sGraphics3D::GetCurrent()->impl()->%s(%s);\n" %
+                 (return_string, func.original_name,
+                  func.MakeOriginalArgString("")))
+      file.Write("}\n")
+
+
+    file.Write("\nconst PPB_OpenGLES ppb_opengles = {\n")
+
+    file.Write("  &")
+    file.Write(",\n  &".join(f.name for f in self.original_functions))
+    file.Write("\n")
+
+    file.Write("};\n\n")
+    file.Write("}  // namespace\n")
+
+    file.Write("""
+const PPB_OpenGLES* Graphics3D::GetOpenGLESInterface() {
+  return &ppb_opengles;
+}
+
+""")
+    file.Write("}  // namespace pepper\n")
+
+    file.Close()
 
 def main(argv):
   """This is the main function."""
@@ -5073,6 +5170,12 @@ def main(argv):
       "--generate-docs", action="store_true",
       help="generate a docs friendly version of the command formats.")
   parser.add_option(
+      "--alternate-mode", type="choice", choices=("ppapi", "chrome_ppapi"),
+      help="generate files for other projects. \"ppapi\" must be run from the "
+      "directory containing the ppapi directory, and will generate ppapi "
+      "bindings. \"chrome_ppapi\" must be run from chrome src directory and "
+      "will generate chrome plumbing for ppapi")
+  parser.add_option(
       "-v", "--verbose", action="store_true",
       help="prints more output.")
 
@@ -5080,23 +5183,31 @@ def main(argv):
 
   gen = GLGenerator(options.verbose)
   gen.ParseGLH("common/GLES2/gl2.h")
-  gen.WriteCommandIds("common/gles2_cmd_ids_autogen.h")
-  gen.WriteFormat("common/gles2_cmd_format_autogen.h")
-  gen.WriteFormatTest("common/gles2_cmd_format_test_autogen.h")
-  gen.WriteGLES2ImplementationHeader("client/gles2_implementation_autogen.h")
-  gen.WriteGLES2CLibImplementation("client/gles2_c_lib_autogen.h")
-  gen.WriteCmdHelperHeader("client/gles2_cmd_helper_autogen.h")
-  gen.WriteServiceImplementation("service/gles2_cmd_decoder_autogen.h")
-  gen.WriteServiceUnitTests("service/gles2_cmd_decoder_unittest_%d_autogen.h")
-  gen.WriteServiceUtilsHeader("service/gles2_cmd_validation_autogen.h")
-  gen.WriteServiceUtilsImplementation(
-      "service/gles2_cmd_validation_implementation_autogen.h")
-
-  if options.generate_command_id_tests:
-    gen.WriteCommandIdTest("common/gles2_cmd_id_test_autogen.h")
-
-  if options.generate_docs:
-    gen.WriteDocs("docs/gles2_cmd_format_docs_autogen.h")
+
+  if options.alternate_mode == "ppapi":
+    gen.WritePepperGLES2Interface("ppapi/c/ppb_opengles.h")
+
+  elif options.alternate_mode == "chrome_ppapi":
+    gen.WritePepperGLES2Implementation("webkit/glue/plugins/pepper_graphics_3d_gl.cc")
+
+  else:
+    gen.WriteCommandIds("common/gles2_cmd_ids_autogen.h")
+    gen.WriteFormat("common/gles2_cmd_format_autogen.h")
+    gen.WriteFormatTest("common/gles2_cmd_format_test_autogen.h")
+    gen.WriteGLES2ImplementationHeader("client/gles2_implementation_autogen.h")
+    gen.WriteGLES2CLibImplementation("client/gles2_c_lib_autogen.h")
+    gen.WriteCmdHelperHeader("client/gles2_cmd_helper_autogen.h")
+    gen.WriteServiceImplementation("service/gles2_cmd_decoder_autogen.h")
+    gen.WriteServiceUnitTests("service/gles2_cmd_decoder_unittest_%d_autogen.h")
+    gen.WriteServiceUtilsHeader("service/gles2_cmd_validation_autogen.h")
+    gen.WriteServiceUtilsImplementation(
+        "service/gles2_cmd_validation_implementation_autogen.h")
+
+    if options.generate_command_id_tests:
+      gen.WriteCommandIdTest("common/gles2_cmd_id_test_autogen.h")
+
+    if options.generate_docs:
+      gen.WriteDocs("docs/gles2_cmd_format_docs_autogen.h")
 
   if gen.errors > 0:
     print "%d errors" % gen.errors