Renamed vk_apple.mm -> vk_apple_helpers.mm

Support for Xcode project generation.
Distinguish object file between .cpp & .mm versions.
Xcode project build did not work when had the same source file with .cpp and .mm extensions ie. vk_apple.cpp & vk_apple.mm
The makefile generator explicitly distinguishes the targets ie. vk_apple.cpp.o & vk_apple.mm.o

renderdoc/driver/vulkan/CMakeLists.txt

@@ -88,7 +88,7 @@ if(ANDROID)
     list(APPEND sources vk_posix.cpp vk_android.cpp vk_layer_android.cpp)
     list(APPEND definitions PRIVATE -DVK_USE_PLATFORM_ANDROID_KHR)
 elseif(APPLE)
-    list(APPEND sources vk_posix.cpp vk_apple.cpp vk_apple.mm)
+    list(APPEND sources vk_posix.cpp vk_apple.cpp vk_apple_helpers.mm)
 
     add_definitions(-DVK_USE_PLATFORM_MACOS_MVK -DVK_USE_PLATFORM_METAL_EXT)
 elseif(ENABLE_GGP)

renderdoc/driver/vulkan/renderdoc_vulkan.vcxproj

@@ -202,7 +202,7 @@
   </ItemGroup>
   <ItemGroup>
     <None Include="renderdoc.json" />
-    <None Include="vk_apple.mm" />
+    <None Include="vk_apple_helpers.mm" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\shaders\spirv\renderdoc_spirv.vcxproj">

renderdoc/driver/vulkan/renderdoc_vulkan.vcxproj.filters

@@ -283,7 +283,7 @@
     <None Include="renderdoc.json">
       <Filter>Layer</Filter>
     </None>
-    <None Include="vk_apple.mm">
+    <None Include="vk_apple_helpers.mm">
       <Filter>OS\Posix</Filter>
     </None>
   </ItemGroup>

renderdoc/driver/vulkan/vk_apple.cpp

@@ -28,7 +28,7 @@
 
 #include <dlfcn.h>
 
-// helpers defined in vk_apple.mm
+// helpers defined in vk_apple_helpers.mm
 void getMetalLayerSize(void *layerHandle, int &width, int &height);
 
 #if defined(VK_USE_PLATFORM_MACOS_MVK)