Initialize destinations variables before calling GL functions...

gpu/command_buffer/build_gles2_cmd_buffer.py

Index: gpu/command_buffer/build_gles2_cmd_buffer.py
===================================================================
--- gpu/command_buffer/build_gles2_cmd_buffer.py	(revision 68425)
+++ gpu/command_buffer/build_gles2_cmd_buffer.py	(working copy)
@@ -2145,6 +2145,11 @@
     else:
       self.WriteGLES2ImplementationDeclaration(func, file)
 
+  def WriteDestinationInitalizationValidation(self, func, file):
+    """Writes the client side destintion initialization validation."""
+    for arg in func.GetOriginalArgs():
+      arg.WriteDestinationInitalizationValidation(file, func)
+
   def WriteImmediateCmdComputeSize(self, func, file):
     """Writes the size computation code for the immediate version of a cmd."""
     file.Write("  static uint32 ComputeSize(uint32 size_in_bytes) {\n")
@@ -4000,6 +4005,7 @@
     'GLfloat': 'float',
     'GLclampf': 'float',
   }
+  need_validation_ = ['GLsizei*', 'GLboolean*', 'GLenum*', 'GLint*']
 
   def __init__(self, name, type):
     self.name = name
@@ -4049,6 +4055,20 @@
     """Writes the validation code for an argument."""
     pass
 
+  def WriteDestinationInitalizationValidation(self, file, func):
+    """Writes the client side destintion initialization validation."""
+    pass
+
+  def WriteDestinationInitalizationValidatationIfNeeded(self, file, func):
+    """Writes the client side destintion initialization validation if needed."""
+    parts = self.type.split(" ")
+    if len(parts) > 1:
+      return
+    if parts[0] in self.need_validation_:
+      file.Write("  GL_CLIENT_VALIDATE_DESTINATION_INITALIZATION(%s, %s);\n" %
+          (self.type[:-1], self.name))
+
+
   def WriteGetAddress(self, file):
     """Writes the code to get the address this argument refers to."""
     pass
@@ -4233,7 +4253,11 @@
     """Overridden from Argument."""
     return None
 
+  def WriteDestinationInitalizationValidation(self, file, func):
+    """Overridden from Argument."""
+    self.WriteDestinationInitalizationValidatationIfNeeded(file, func)
 
+
 class BucketPointerArgument(Argument):
   """A class that represents an bucket argument to a function."""
 
@@ -4258,7 +4282,11 @@
     """Overridden from Argument."""
     return None
 
+  def WriteDestinationInitalizationValidation(self, file, func):
+    """Overridden from Argument."""
+    self.WriteDestinationInitalizationValidatationIfNeeded(file, func)
 
+
 class PointerArgument(Argument):
   """A class that represents a pointer argument to a function."""
 
@@ -4328,7 +4356,11 @@
       return InputStringBucketArgument(self.name, self.type)
     return BucketPointerArgument(self.name, self.type)
 
+  def WriteDestinationInitalizationValidation(self, file, func):
+    """Overridden from Argument."""
+    self.WriteDestinationInitalizationValidatationIfNeeded(file, func)
 
+
 class InputStringBucketArgument(Argument):
   """An string input argument where the string is passed in a bucket."""
 
@@ -4649,6 +4681,10 @@
     """Writes the GLES2 Implemention declaration."""
     self.type_handler.WriteGLES2ImplementationHeader(self, file)
 
+  def WriteDestinationInitalizationValidation(self, file):
+    """Writes the client side destintion initialization validation."""
+    self.type_handler.WriteDestinationInitalizationValidation(self, file)
+
   def WriteFormatTest(self, file):
     """Writes the cmd's format test."""
     self.type_handler.WriteFormatTest(self, file)
@@ -5136,6 +5172,7 @@
       file.Write("%s GLES2%s(%s) {\n" %
                  (func.return_type, func.name,
                   func.MakeTypedOriginalArgString("")))
+      func.WriteDestinationInitalizationValidation(file)
       comma = ""
       if len(func.GetOriginalArgs()):
         comma = " << "