Generate Vulkan framework from Vulkan registry

Instead of using the manually created vulkan.api file for generating the
Vulkan framework, we generate it directly from the vulkan registry
(vk.xml)

Bug: 134711355
Test: Build and flash, dEQP tests
Change-Id: I7e85cd4b64d13b8ed2c54678090f405171854a40
diff --git a/vulkan/scripts/generator_common.py b/vulkan/scripts/generator_common.py
new file mode 100644
index 0000000..313357d
--- /dev/null
+++ b/vulkan/scripts/generator_common.py
@@ -0,0 +1,238 @@
+#!/usr/bin/env python3
+#
+# Copyright 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# This script provides the common functions for generating the
+# vulkan framework directly from the vulkan registry (vk.xml).
+
+copyright = """/*
+ * Copyright 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+"""
+
+warning = '// WARNING: This file is generated. See ../README.md for instructions.\n\n'
+
+blacklistedExtensions = [
+    'VK_KHR_display',
+    'VK_KHR_display_swapchain',
+    'VK_KHR_mir_surface',
+    'VK_KHR_xcb_surface',
+    'VK_KHR_xlib_surface',
+    'VK_KHR_wayland_surface',
+    'VK_KHR_win32_surface',
+    'VK_KHR_external_memory_win32',
+    'VK_KHR_win32_keyed_mutex',
+    'VK_KHR_external_semaphore_win32',
+    'VK_KHR_external_fence_win32',
+    'VK_EXT_acquire_xlib_display',
+    'VK_EXT_direct_mode_display',
+    'VK_EXT_display_surface_counter',
+    'VK_EXT_display_control',
+    'VK_FUCHSIA_imagepipe_surface',
+    'VK_MVK_ios_surface',
+    'VK_MVK_macos_surface',
+    'VK_NN_vi_surface',
+    'VK_NV_external_memory_win32',
+    'VK_NV_win32_keyed_mutex',
+    'VK_EXT_metal_surface', #not present in vulkan.api
+    'VK_NVX_image_view_handle', #not present in vulkan.api
+    'VK_NV_cooperative_matrix' #not present in vulkan.api
+]
+
+exportedExtensions = [
+    'VK_KHR_surface',
+    'VK_KHR_swapchain',
+    'VK_KHR_android_surface',
+    'VK_ANDROID_external_memory_android_hardware_buffer'
+]
+
+def isFunctionSupported(functionName):
+  if functionName not in extensionsDict:
+    return True
+  else:
+    if extensionsDict[functionName] not in blacklistedExtensions:
+      return True
+  return False
+
+def isInstanceDispatched(functionName):
+  return isFunctionSupported(functionName) and getDispatchTableType(functionName) == 'Instance'
+
+def isDeviceDispatched(functionName):
+  return isFunctionSupported(functionName) and getDispatchTableType(functionName) == 'Device'
+
+def isGloballyDispatched(functionName):
+  return isFunctionSupported(functionName) and getDispatchTableType(functionName) == 'Global'
+
+def isExtensionExported(extensionName):
+  if extensionName in exportedExtensions:
+    return True
+  return False
+
+def isFunctionExported(functionName):
+  if isFunctionSupported(functionName):
+    if functionName in extensionsDict:
+      return isExtensionExported(extensionsDict[functionName])
+    return True
+  return False
+
+def getDispatchTableType(functionName):
+  if functionName not in paramDict:
+    return None
+
+  switchCase = {
+      'VkInstance ' : 'Instance',
+      'VkPhysicalDevice ' : 'Instance',
+      'VkDevice ' : 'Device',
+      'VkQueue ' : 'Device',
+      'VkCommandBuffer ' : 'Device'
+  }
+
+  if len(paramDict[functionName])>0:
+    return switchCase.get(paramDict[functionName][0][0], 'Global')
+  return 'Global'
+
+def isInstanceDispatchTableEntry(functionName):
+  if functionName == 'vkEnumerateDeviceLayerProperties': # deprecated, unused internally - @dbd33bc
+    return False
+  if isFunctionExported(functionName) and isInstanceDispatched(functionName):
+    return True
+  return False
+
+def isDeviceDispatchTableEntry(functionName):
+  if isFunctionExported(functionName) and isDeviceDispatched(functionName):
+    return True
+  return False
+
+
+def clang_on(f, indent):
+  f.write (clang_off_spaces * indent + '// clang-format on\n')
+
+def clang_off(f, indent):
+  f.write (clang_off_spaces * indent + '// clang-format off\n')
+
+clang_off_spaces = ' '*4
+
+parametersList = []
+paramDict = {}
+allCommandsList = []
+extensionsDict = {}
+returnTypeDict = {}
+versionDict = {}
+aliasDict = {}
+
+def parseVulkanRegistry():
+  import xml.etree.ElementTree as ET
+  import os
+  vulkan_registry = os.path.join(os.path.dirname(__file__),'..','..','..','..','external','vulkan-headers','registry','vk.xml')
+  tree = ET.parse(vulkan_registry)
+  root = tree.getroot()
+  protoset = False
+  fnName = ""
+  fnType = ""
+  for commands in root.iter('commands'):
+    for command in commands:
+      if command.tag == 'command':
+        if protoset == True:
+          paramDict[fnName] = parametersList.copy()
+        parametersList.clear()
+        protoset = False
+        if command.get('alias') != None:
+          alias = command.get('alias')
+          fnName = command.get('name')
+          aliasDict[fnName] = alias
+          allCommandsList.append(fnName)
+          paramDict[fnName] = paramDict[alias].copy()
+        for params in command:
+          if(params.tag == 'param'):
+            paramtype = ""
+            if params.text!=None:
+              paramtype = params.text
+            typeval = params.find('type')
+            paramtype = paramtype + typeval.text
+            if typeval.tail!=None:
+              paramtype = paramtype + typeval.tail
+            pname = params.find('name')
+            paramname = pname.text
+            if pname.tail != None:
+              parametersList.append((paramtype,paramname,pname.tail))
+            else:
+              parametersList.append((paramtype,paramname))
+          if params.tag == 'proto':
+            for c in params:
+              if c.tag == 'type':
+                fnType = c.text
+              if c.tag == 'name':
+                fnName = c.text
+                protoset = True
+                allCommandsList.append(fnName)
+                returnTypeDict[fnName] = fnType
+
+  for exts in root.iter('extensions'):
+    for extension in exts:
+      apiversion = ""
+      if extension.tag == 'extension':
+        extname = extension.get('name')
+        for req in extension:
+          if req.get('feature')!=None:
+            apiversion = req.get('feature')
+          for commands in req:
+            if commands.tag == 'command':
+              commandname = commands.get('name')
+              if commandname not in extensionsDict:
+                extensionsDict[commandname] = extname
+                if apiversion != "":
+                  versionDict[commandname] = apiversion
+
+  for feature in root.iter('feature'):
+    apiversion = feature.get('name')
+    for req in feature:
+      for command in req:
+        if command.tag == 'command':
+          cmdName = command.get('name')
+          if cmdName in allCommandsList:
+            versionDict[cmdName] = apiversion
+
+
+def initProc(name, f):
+  if name in extensionsDict:
+    f.write ('    INIT_PROC_EXT(' + extensionsDict[name][3:] + ', ')
+  else:
+    f.write ('    INIT_PROC(')
+
+  if name in versionDict and versionDict[name] == 'VK_VERSION_1_1':
+    f.write('false, ')
+  else:
+    f.write('true, ')
+
+  if isInstanceDispatched(name):
+    f.write('instance, ')
+  else:
+    f.write('dev, ')
+
+  f.write(name[2:] + ');\n')
+