Examples: Fix batch files (amend b1a18d82, #3513), standardize them + DirectX12: Move ImGui::Render() call above the first barrier to clarify its lack of effect on the graphics pipe.

backends/imgui_impl_dx12.cpp

@@ -7,7 +7,7 @@
 
 // Important: to compile on 32-bit systems, this backend requires code to be compiled with '#define ImTextureID ImU64'.
 // This is because we need ImTextureID to carry a 64-bit value and by default ImTextureID is defined as void*.
-// This define is done in the example .vcxproj file and need to be replicated in your app (by e.g. editing imconfig.h)
+// This define is set in the example .vcxproj file and need to be replicated in your app or by adding it to your imconfig.h file.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.

backends/imgui_impl_dx12.h

@@ -7,7 +7,7 @@
 
 // Important: to compile on 32-bit systems, this backend requires code to be compiled with '#define ImTextureID ImU64'.
 // This is because we need ImTextureID to carry a 64-bit value and by default ImTextureID is defined as void*.
-// This define is done in the example .vcxproj file and need to be replicated in your app (by e.g. editing imconfig.h)
+// This define is set in the example .vcxproj file and need to be replicated in your app or by adding it to your imconfig.h file.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.