[godot] Add Live++ support via patch.

spine-godot/livepp.patch

@@ -0,0 +1,132 @@
+From 3077827d8145f4689b6f43db9924dd71d9963b5d Mon Sep 17 00:00:00 2001
+From: badlogic <badlogicgames@gmail.com>
+Date: Mon, 11 Apr 2022 13:33:10 +0200
+Subject: [PATCH] Add support for Live++ on Windows
+
+When the LIVEPP_PATH environment variable is set, the build adds a CPPDEFINE called LIVEPP_PATH, which then triggers setup, synchronization, and tear down of Live++.
+
+Improve inclusion of Live++ API header as per PR review.
+
+Still requires a separate wide char version of _MKSTR as that's what lpp::lppLoadAndRegister requires.
+
+Use build option livepp instead of environment variable LIVEPP_PATH
+
+E.g. `scons livepp=c:/tools/LivePP`
+---
+ platform/windows/detect.py         | 13 ++++++++++++-
+ platform/windows/godot_windows.cpp | 20 ++++++++++++++++++++
+ platform/windows/os_windows.cpp    |  8 ++++++++
+ 3 files changed, 40 insertions(+), 1 deletion(-)
+
+diff --git a/platform/windows/detect.py b/platform/windows/detect.py
+index 249a0d2e79..fb42edff8b 100644
+--- a/platform/windows/detect.py
++++ b/platform/windows/detect.py
+@@ -44,7 +44,7 @@ def can_build():
+ 
+ 
+ def get_opts():
+-    from SCons.Variables import BoolVariable, EnumVariable
++    from SCons.Variables import BoolVariable, EnumVariable, PathVariable
+ 
+     mingw32 = ""
+     mingw64 = ""
+@@ -73,6 +73,7 @@ def get_opts():
+         BoolVariable("use_thinlto", "Use ThinLTO", False),
+         BoolVariable("use_static_cpp", "Link MinGW/MSVC C++ runtime libraries statically", True),
+         BoolVariable("use_asan", "Use address sanitizer (ASAN)", False),
++        PathVariable("livepp", "Path to the Live++ installation", "", PathVariable.PathAccept),
+     ]
+ 
+ 
+@@ -309,6 +310,16 @@ def configure_msvc(env, manual_msvc_config):
+ 
+     env.AppendUnique(LINKFLAGS=["/STACK:" + str(STACK_SIZE)])
+ 
++    # Check if LIVEPP_PATH is set and add #define. Perform
++    # some sanity checks.
++    if env.get("livepp"):
++        if env["target"] == "release_debug" or env["target"] == "debug":
++            print("Found Live++ at %s" % env.get("livepp"))
++            env.AppendUnique(CPPDEFINES=["LIVEPP_PATH=%s" % env.get("livepp")])
++            env.AppendUnique(CPPPATH=[env.get("livepp")])
++            env.AppendUnique(LINKFLAGS=["/FUNCTIONPADMIN"])
++        else:
++            print("Live++ can only be used with targets 'debug' and 'release_debug'")
+ 
+ def configure_mingw(env):
+     # Workaround for MinGW. See:
+diff --git a/platform/windows/godot_windows.cpp b/platform/windows/godot_windows.cpp
+index ad4e3ae77c..0974d3d9ae 100644
+--- a/platform/windows/godot_windows.cpp
++++ b/platform/windows/godot_windows.cpp
+@@ -34,6 +34,11 @@
+ #include <locale.h>
+ #include <stdio.h>
+ 
++#ifdef LIVEPP_PATH
++#include "API/LPP_API.h"
++HMODULE livePP;
++#endif
++
+ // For export templates, add a section; the exporter will patch it to enclose
+ // the data appended to the executable (bundled PCK)
+ #ifndef TOOLS_ENABLED
+@@ -136,6 +141,16 @@ char *wc_to_utf8(const wchar_t *wc) {
+ }
+ 
+ int widechar_main(int argc, wchar_t **argv) {
++#ifdef LIVEPP_PATH
++#define _MKSTR_L(x) _STR_L(x)
++#define _STR_L(x) L#x
++	livePP = lpp::lppLoadAndRegister(_MKSTR_L(LIVEPP_PATH), "Godot");
++	lpp::lppEnableAllCallingModulesSync(livePP);
++	lpp::lppInstallExceptionHandler(livePP);
++#undef _MKSTR_L
++#undef _STR_L
++#endif
++
+ 	OS_Windows os(nullptr);
+ 
+ 	setlocale(LC_CTYPE, "");
+@@ -173,6 +188,11 @@ int widechar_main(int argc, wchar_t **argv) {
+ 	}
+ 	delete[] argv_utf8;
+ 
++#ifdef LIVEPP_PATH
++	lpp::lppShutdown(livePP);
++	::FreeLibrary(livePP);
++#endif
++
+ 	return os.get_exit_code();
+ }
+ 
+diff --git a/platform/windows/os_windows.cpp b/platform/windows/os_windows.cpp
+index b4669e452a..42f675598a 100644
+--- a/platform/windows/os_windows.cpp
++++ b/platform/windows/os_windows.cpp
+@@ -53,6 +53,11 @@
+ #include <regstr.h>
+ #include <shlobj.h>
+ 
++#ifdef LIVEPP_PATH
++#include "API/LPP_API.h"
++extern HMODULE livePP;
++#endif
++
+ extern "C" {
+ __declspec(dllexport) DWORD NvOptimusEnablement = 1;
+ __declspec(dllexport) int AmdPowerXpressRequestHighPerformance = 1;
+@@ -677,6 +682,9 @@ void OS_Windows::run() {
+ 		if (Main::iteration()) {
+ 			break;
+ 		}
++#ifdef LIVEPP_PATH
++		lpp::lppSyncPoint(livePP);
++#endif
+ 	}
+ 
+ 	main_loop->finalize();
+-- 
+2.27.0.windows.1
+

spine-godot/setup.bat

@@ -4,4 +4,4 @@ git clone --depth 1 https://github.com/godotengine/godot.git -b 3.4.4-stable
 xcopy /E /I .idea godot\.idea
 copy custom.py godot
 xcopy /E /I ..\spine-cpp\spine-cpp spine_godot\spine-cpp
-cd godot & scons target=debug custom_modules=..\spine_godot vsproj=yes --jobs=16 & cd ..
+cd godot & git apply ../livepp.patch scons target=debug custom_modules=..\spine_godot vsproj=yes --jobs=16 & cd ..