feat(tur/luanti): perform the migration from SDL2+GLX to libxi+EGL

I am pretty sure upstream Luanti has mostly already done this on **all its X11-based official targets**, but I did not yet do this to Luanti-on-TUR because I have not had time to finish fixing + testing this mode. In particular I believe that this mode has a unique potential to possibly engage with twaik's `termux-wsi-layer` and possibly benefit from an extremely huge performance boost on some specific devices, if it can be made to work with it. termux/termux-packages#22353 However, unfortunately right now when I try to use this PR with `termux-wsi-layer` installed on a device where it works with `glmark2-es2`, I see this error ``` Thread 1 "luanti" received signal SIGSEGV, Segmentation fault. 0x0000007fad9782b0 in XGetVisualInfo () from /data/data/com.termux/files/usr/lib/libX11.so (gdb) bt from /data/data/com.termux/files/usr/lib/libX11.so config=0xb400007d1ca54f00, attribute=12334, value=0x7fffffd464) at /data/data/com.termux/files/home/termux-packages/packages/termux-wsi-layer/egl.c:133 this=0xb400007daca1c9b0) at /data/data/com.termux/files/home/.termux-build/luanti/src/irr/src/CEGLManager.cpp:185 this=this@entry=0xb400007ddca220d0) at /data/data/com.termux/files/home/.termux-build/luanti/src/irr/src/CIrrDeviceLinux.cpp:414 this=0xb400007ddca220d0, param=...) at /data/data/com.termux/files/home/.termux-build/luanti/src/irr/src/CIrrDeviceLinux.cpp:166 at /data/data/com.termux/files/home/.termux-build/luanti/src/irr/src/Irrlicht.cpp:66 at /data/data/com.termux/files/home/.termux-build/luanti/src/src/client/renderingengine.cpp:151 receiver=0xb400007d9ca1d630) at /data/data/com.termux/files/home/.termux-build/luanti/src/src/client/renderingengine.cpp:206 at /data/data/com.termux/files/home/.termux-build/luanti/src/src/client/clientlauncher.cpp:290 cmd_args=...) at /data/data/com.termux/files/home/.termux-build/luanti/src/src/client/clientlauncher.cpp:98 at /data/data/com.termux/files/home/.termux-build/luanti/src/src/main.cpp:264 (gdb) ``` `0001-force-egl-priority-over-glx.patch`: this is minetest/minetest#15286 but applied to Luanti-on-TUR `0005-toggle-on-the-recent-migration-away-from-sdl2.patch`: this is minetest/minetest#15284 but applied to Luanti-on-TUR `0006-fix-incompatible-type-ekey-code.patch`: I wrote this, this is necessary to fix a minor build error when SDL2 is disabled in Luanti
robertkirkman · Nov 24, 2024 · 6ef875a · 6ef875a
1 parent 95f975f
commit 6ef875a
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diff --git a/tur/luanti/0001-force-egl-priority-over-glx.patch b/tur/luanti/0001-force-egl-priority-over-glx.patch
@@ -0,0 +1,374 @@
+This is https://github.com/minetest/minetest/pull/15286
+which is currently disabled upstream, because of
+https://github.com/minetest/minetest/issues/15313
+which is an NVIDIA-specific issue.
+--- a/irr/src/CEGLManager.cpp
++++ b/irr/src/CEGLManager.cpp
+@@ -40,29 +40,26 @@ bool CEGLManager::initialize(const SIrrlichtCreationParameters &params, const SE
+ 	if (EglWindow != 0 && EglDisplay != EGL_NO_DISPLAY)
+ 		return true;
+
+-		// Window is depend on platform.
++	// Window is depend on platform.
++	setWindow(Data);
+ #if defined(_IRR_COMPILE_WITH_WINDOWS_DEVICE_)
+-	EglWindow = (NativeWindowType)Data.OpenGLWin32.HWnd;
+-	Data.OpenGLWin32.HDc = GetDC((HWND)EglWindow);
+ 	EglDisplay = eglGetDisplay((NativeDisplayType)Data.OpenGLWin32.HDc);
+ #elif defined(_IRR_EMSCRIPTEN_PLATFORM_)
+-	EglWindow = 0;
+ 	EglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+ #elif defined(_IRR_COMPILE_WITH_X11_DEVICE_)
+-	EglWindow = (NativeWindowType)Data.OpenGLLinux.X11Window;
+ 	EglDisplay = eglGetDisplay((NativeDisplayType)Data.OpenGLLinux.X11Display);
+ #endif
+
+ 	// We must check if EGL display is valid.
+ 	if (EglDisplay == EGL_NO_DISPLAY) {
+-		os::Printer::log("Could not get EGL display.");
++		os::Printer::log("Could not get EGL display.", ELL_ERROR);
+ 		terminate();
+ 		return false;
+ 	}
+
+ 	// Initialize EGL here.
+ 	if (!eglInitialize(EglDisplay, &MajorVersion, &MinorVersion)) {
+-		os::Printer::log("Could not initialize EGL display.");
++		os::Printer::log("Could not initialize EGL display.", ELL_ERROR);
+
+ 		EglDisplay = EGL_NO_DISPLAY;
+ 		terminate();
+@@ -73,6 +70,22 @@ bool CEGLManager::initialize(const SIrrlichtCreationParameters &params, const SE
+ 	return true;
+ }
+
++void CEGLManager::setWindow(const SExposedVideoData &inData)
++{
++#if defined(_IRR_COMPILE_WITH_WINDOWS_DEVICE_)
++	Data.OpenGLWin32.HWnd = inData.OpenGLWin32.HWnd;
++	if (Data.OpenGLWin32.HWnd) {
++		EglWindow = (NativeWindowType)Data.OpenGLWin32.HWnd;
++		Data.OpenGLWin32.HDc = GetDC((HWND)EglWindow);
++	}
++#elif defined(_IRR_EMSCRIPTEN_PLATFORM_)
++	EglWindow = 0;
++#elif defined(_IRR_COMPILE_WITH_X11_DEVICE_)
++	Data.OpenGLLinux.X11Window = inData.OpenGLLinux.X11Window;
++	EglWindow = (NativeWindowType)Data.OpenGLLinux.X11Window;
++#endif
++}
++
+ void CEGLManager::terminate()
+ {
+ 	if (EglWindow == 0 && EglDisplay == EGL_NO_DISPLAY)
+@@ -105,20 +118,16 @@ bool CEGLManager::generateSurface()
+ 	if (EglSurface != EGL_NO_SURFACE)
+ 		return true;
+
+-		// We should assign new WindowID on platforms, where WindowID may change at runtime,
+-		// at this time only Android support this feature.
+-		// this needs an update method instead!
+-
++	if (!EglConfig) {
+ #if defined(_IRR_EMSCRIPTEN_PLATFORM_)
+-	// eglChooseConfig is currently only implemented as stub in emscripten (version 1.37.22 at point of writing)
+-	// But the other solution would also be fine as it also only generates a single context so there is not much to choose from.
+-	EglConfig = chooseConfig(ECS_IRR_CHOOSE);
++		EglConfig = chooseConfig(ECS_IRR_CHOOSE);
+ #else
+-	EglConfig = chooseConfig(ECS_EGL_CHOOSE_FIRST_LOWER_EXPECTATIONS);
++		EglConfig = chooseConfig(ECS_EGL_CHOOSE_FIRST_LOWER_EXPECTATIONS);
+ #endif
++	}
+
+-	if (EglConfig == 0) {
+-		os::Printer::log("Could not get config for EGL display.");
++	if (!EglConfig) {
++		os::Printer::log("Could not choose EGL config.", ELL_ERROR);
+ 		return false;
+ 	}
+
+@@ -129,11 +138,26 @@ bool CEGLManager::generateSurface()
+ 		EglSurface = eglCreateWindowSurface(EglDisplay, EglConfig, 0, 0);
+
+ 	if (EGL_NO_SURFACE == EglSurface)
+-		os::Printer::log("Could not create EGL surface.");
++		os::Printer::log("Could not create EGL surface.", ELL_ERROR);
+
+ #ifdef EGL_VERSION_1_2
+-	if (MinorVersion > 1)
+-		eglBindAPI(EGL_OPENGL_ES_API);
++	if (MinorVersion > 1) {
++		EGLBoolean ok = 0;
++		switch (Params.DriverType) {
++		case EDT_OGLES2:
++		case EDT_WEBGL1:
++			ok = eglBindAPI(EGL_OPENGL_ES_API);
++			break;
++		case EDT_OPENGL:
++			ok = eglBindAPI(EGL_OPENGL_API);
++		default:
++			break;
++		}
++		if (!ok) {
++			os::Printer::log("Could not bind EGL API.", ELL_ERROR);
++			return false;
++		}
++	}
+ #endif
+
+ 	if (Params.Vsync)
+@@ -142,6 +166,26 @@ bool CEGLManager::generateSurface()
+ 	return true;
+ }
+
++EGLint CEGLManager::getNativeVisualID()
++{
++	if (!EglConfig) {
++#if defined(_IRR_EMSCRIPTEN_PLATFORM_)
++		EglConfig = chooseConfig(ECS_IRR_CHOOSE);
++#else
++		EglConfig = chooseConfig(ECS_EGL_CHOOSE_FIRST_LOWER_EXPECTATIONS);
++#endif
++	}
++
++	if (!EglConfig) {
++		os::Printer::log("Could not choose EGL config.", ELL_WARNING);
++		return 0;
++	}
++
++	EGLint ret = 0;
++	eglGetConfigAttrib(EglDisplay, EglConfig, EGL_NATIVE_VISUAL_ID, &ret);
++	return ret;
++}
++
+ EGLConfig CEGLManager::chooseConfig(EConfigStyle confStyle)
+ {
+ 	EGLConfig configResult = 0;
+@@ -153,6 +197,8 @@ EGLConfig CEGLManager::chooseConfig(EConfigStyle confStyle)
+ 	case EDT_WEBGL1:
+ 		eglOpenGLBIT = EGL_OPENGL_ES2_BIT;
+ 		break;
++	case EDT_OPENGL:
++		eglOpenGLBIT = EGL_OPENGL_BIT;
+ 	default:
+ 		break;
+ 	}
+@@ -293,6 +339,8 @@ EGLConfig CEGLManager::chooseConfig(EConfigStyle confStyle)
+ 		}
+
+ 		delete[] configs;
++	} else {
++		_IRR_DEBUG_BREAK_IF(1)
+ 	}
+
+ 	return configResult;
+@@ -450,33 +498,36 @@ bool CEGLManager::generateContext()
+ 	if (EglContext != EGL_NO_CONTEXT)
+ 		return true;
+
+-	EGLint OpenGLESVersion = 0;
++	std::vector<EGLint> ContextAttrib;
+
+ 	switch (Params.DriverType) {
+ 	case EDT_OGLES2:
+ 	case EDT_WEBGL1:
+-		OpenGLESVersion = 2;
++#ifdef EGL_VERSION_1_3
++		ContextAttrib.push_back(EGL_CONTEXT_CLIENT_VERSION);
++		ContextAttrib.push_back(2);
++#endif
++		break;
++	case EDT_OPENGL:
++#ifdef EGL_VERSION_1_5
++		ContextAttrib.push_back(EGL_CONTEXT_OPENGL_PROFILE_MASK);
++		ContextAttrib.push_back(EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT);
++#endif
+ 		break;
+ 	default:
+ 		break;
+ 	}
+
+-	EGLint ContextAttrib[] = {
+-#ifdef EGL_VERSION_1_3
+-			EGL_CONTEXT_CLIENT_VERSION, OpenGLESVersion,
+-#endif
+-			EGL_NONE, 0,
+-		};
++	ContextAttrib.push_back(EGL_NONE);
++	ContextAttrib.push_back(0);
+
+-	EglContext = eglCreateContext(EglDisplay, EglConfig, EGL_NO_CONTEXT, ContextAttrib);
++	EglContext = eglCreateContext(EglDisplay, EglConfig, EGL_NO_CONTEXT, ContextAttrib.data());
+
+ 	if (testEGLError()) {
+ 		os::Printer::log("Could not create EGL context.", ELL_ERROR);
+ 		return false;
+ 	}
+
+-	os::Printer::log("EGL context created with OpenGLESVersion: ", core::stringc((int)OpenGLESVersion), ELL_DEBUG);
+-
+ 	return true;
+ }
+
+--- a/irr/src/CEGLManager.h
++++ b/irr/src/CEGLManager.h
+@@ -31,6 +31,10 @@ class CEGLManager : public IContextManager
+ 	aren't create. */
+ 	bool initialize(const SIrrlichtCreationParameters &params, const SExposedVideoData &data) override;
+
++	// Set EGL window.
++	// Call this if window is not known at time of initialize()
++	void setWindow(const SExposedVideoData &data);
++
+ 	// Terminate EGL.
+ 	/* Terminate EGL context. This method break both existed surface and context. */
+ 	void terminate() override;
+@@ -66,6 +70,9 @@ class CEGLManager : public IContextManager
+ 	// Swap buffers.
+ 	bool swapBuffers() override;
+
++	// Returns native visual ID. Will choose config if not already done.
++	EGLint getNativeVisualID();
++
+ protected:
+ 	enum EConfigStyle
+ 	{
+--- a/irr/src/CGLXManager.cpp
++++ /dev/null
+--- a/irr/src/CGLXManager.h
++++ /dev/null
+--- a/irr/src/CIrrDeviceLinux.cpp
++++ b/irr/src/CIrrDeviceLinux.cpp
+@@ -34,14 +34,10 @@
+ #include <X11/extensions/XInput2.h>
+ #endif
+
+-#if defined(_IRR_COMPILE_WITH_OGLES2_)
++#if defined(_IRR_COMPILE_WITH_OPENGL_) || defined(_IRR_COMPILE_WITH_OGLES2_)
+ #include "CEGLManager.h"
+ #endif
+
+-#if defined(_IRR_COMPILE_WITH_OPENGL_)
+-#include "CGLXManager.h"
+-#endif
+-
+ #ifdef _IRR_LINUX_XCURSOR_
+ #include <X11/Xcursor/Xcursor.h>
+ #endif
+@@ -152,8 +148,20 @@ CIrrDeviceLinux::CIrrDeviceLinux(const SIrrlichtCreationParameters &param) :
+ 	// without it, multi-threaded GL drivers may crash
+ 	XInitThreads();
+
+-	// create window
+ 	if (CreationParams.DriverType != video::EDT_NULL) {
++		// initialize EGL so it can choose a config
++#ifdef _IRR_COMPILE_WITH_X11_
++#if defined(_IRR_COMPILE_WITH_OPENGL_) || defined(_IRR_COMPILE_WITH_OGLES2_)
++		video::SExposedVideoData data;
++		data.OpenGLLinux.X11Window = 0; // not created yet, but that's ok
++		data.OpenGLLinux.X11Display = XDisplay;
++
++		ContextManager = new video::CEGLManager();
++		if (!ContextManager->initialize(CreationParams, data))
++			return;
++#endif
++#endif
++
+ 		// create the window, only if we do not use the null device
+ 		if (!createWindow())
+ 			return;
+@@ -397,14 +405,14 @@ bool CIrrDeviceLinux::createWindow()
+ 	if (WMCheck != None)
+ 		HasNetWM = true;
+
+-#if defined(_IRR_COMPILE_WITH_OPENGL_)
+-	// don't use the XVisual with OpenGL, because it ignores all requested
+-	// properties of the CreationParams
+-	if (CreationParams.DriverType == video::EDT_OPENGL) {
+-		video::SExposedVideoData data;
+-		data.OpenGLLinux.X11Display = XDisplay;
+-		ContextManager = new video::CGLXManager(CreationParams, data, Screennr);
+-		VisualInfo = ((video::CGLXManager *)ContextManager)->getVisual();
++#if defined(_IRR_COMPILE_WITH_OPENGL_) || defined(_IRR_COMPILE_WITH_OGLES2_)
++	if (ContextManager) {
++		auto *c = static_cast<video::CEGLManager*>(ContextManager);
++		os::Printer::log("Using X visual from EGL");
++		XVisualInfo templ;
++		int n;
++		templ.visualid = static_cast<VisualID>(c->getNativeVisualID());
++		VisualInfo = XGetVisualInfo(XDisplay, VisualIDMask, &templ, &n);
+ 	}
+ #endif
+
+@@ -543,9 +551,7 @@ void CIrrDeviceLinux::createDriver()
+ 	{
+ 		video::SExposedVideoData data;
+ 		data.OpenGLLinux.X11Window = XWindow;
+-		data.OpenGLLinux.X11Display = XDisplay;
+-
+-		ContextManager->initialize(CreationParams, data);
++		static_cast<video::CEGLManager*>(ContextManager)->setWindow(data);
+
+ 		VideoDriver = video::createOpenGLDriver(CreationParams, FileSystem, ContextManager);
+ 	}
+@@ -558,10 +564,7 @@ void CIrrDeviceLinux::createDriver()
+ 	{
+ 		video::SExposedVideoData data;
+ 		data.OpenGLLinux.X11Window = XWindow;
+-		data.OpenGLLinux.X11Display = XDisplay;
+-
+-		ContextManager = new video::CEGLManager();
+-		ContextManager->initialize(CreationParams, data);
++		static_cast<video::CEGLManager*>(ContextManager)->setWindow(data);
+
+ 		VideoDriver = video::createOGLES2Driver(CreationParams, FileSystem, ContextManager);
+ 	}
+@@ -574,10 +577,7 @@ void CIrrDeviceLinux::createDriver()
+ 	{
+ 		video::SExposedVideoData data;
+ 		data.OpenGLLinux.X11Window = XWindow;
+-		data.OpenGLLinux.X11Display = XDisplay;
+-
+-		ContextManager = new video::CEGLManager();
+-		ContextManager->initialize(CreationParams, data);
++		static_cast<video::CEGLManager*>(ContextManager)->setWindow(data);
+
+ 		VideoDriver = video::createWebGL1Driver(CreationParams, FileSystem, ContextManager);
+ 	}
+--- a/irr/src/CMakeLists.txt
++++ b/irr/src/CMakeLists.txt
+@@ -158,7 +158,7 @@ if(ENABLE_OPENGL)
+ 	if(DEVICE STREQUAL "WINDOWS")
+ 		add_definitions(-D_IRR_COMPILE_WITH_WGL_MANAGER_)
+ 	elseif(DEVICE STREQUAL "X11")
+-		add_definitions(-D_IRR_COMPILE_WITH_GLX_MANAGER_)
++		add_definitions(-D_IRR_COMPILE_WITH_EGL_MANAGER_)
+ 	elseif(DEVICE STREQUAL "OSX")
+ 		add_definitions(-D_IRR_COMPILE_WITH_NSOGL_MANAGER_)
+ 	endif()
+@@ -213,7 +213,15 @@ if(ENABLE_GLES2)
+ 	find_package(OpenGLES2 REQUIRED)
+ endif()
+ if(ENABLE_OPENGL)
+-	find_package(OpenGL REQUIRED)
++	if(DEVICE STREQUAL "X11")
++		# use components so we can grab EGL
++		find_package(OpenGL REQUIRED COMPONENTS EGL OpenGL)
++		set(OPENGL_LIBRARIES OpenGL::GL)
++		set(EGL_INCLUDE_DIR OpenGL::EGL)
++		set(EGL_LIBRARY OpenGL::EGL)
++	else()
++		find_package(OpenGL REQUIRED)
++	endif()
+ endif()
+ if(USE_SDL2)
+ 	if(NOT ANDROID)
+@@ -315,7 +323,6 @@ target_link_libraries(IRRMESHOBJ PUBLIC tiniergltf::tiniergltf)
+
+ set(IRRDRVROBJ
+ 	CNullDriver.cpp
+-	CGLXManager.cpp
+ 	CWGLManager.cpp
+ 	CEGLManager.cpp
+ 	CSDLManager.cpp
diff --git a/...x-elf-directory-for-cross-compiling.patch → ...x-elf-directory-for-cross-compiling.patch b/...x-elf-directory-for-cross-compiling.patch → ...x-elf-directory-for-cross-compiling.patch
diff --git a/...002-bionic-libc-x11-wsi-opengl-es-2.patch → ...003-bionic-libc-x11-wsi-opengl-es-2.patch b/...002-bionic-libc-x11-wsi-opengl-es-2.patch → ...003-bionic-libc-x11-wsi-opengl-es-2.patch
diff --git a/...3-prepend-termux-prefix-to-tmp-path.patch → ...4-prepend-termux-prefix-to-tmp-path.patch b/...3-prepend-termux-prefix-to-tmp-path.patch → ...4-prepend-termux-prefix-to-tmp-path.patch
diff --git a/tur/luanti/0005-toggle-on-the-recent-upstream-migration-away-from-sdl2.patch b/tur/luanti/0005-toggle-on-the-recent-upstream-migration-away-from-sdl2.patch
@@ -0,0 +1,16 @@
+This is https://github.com/minetest/minetest/pull/15284
+but for Termux
+--- a/irr/src/CMakeLists.txt
++++ b/irr/src/CMakeLists.txt
+@@ -1,6 +1,10 @@
+ # When enabling SDL2 by default on macOS, don't forget to change
+ # "NSHighResolutionCapable" to true in "Info.plist".
+-if(ANDROID)
++# luanti has migrated to make SDL2 an optional dependency
++# on all platforms that are not using system APIs that directly interface with
++# normal Android/SurfaceFlinger/ANativeWindow/JNI/ART/DEX/Android SDK/Android without Termux
++# with possibly subtly-different behavior between the mode with SDL2 and the mode without it.
++if(THIS_IS_OPTIONAL)
+ 	set(DEFAULT_SDL2 ON)
+ endif()
+