Effective DisplayServer separation, rename X11 -> LinuxBSD

platform/linuxbsd/SCsub

@@ -0,0 +1,23 @@
+#!/usr/bin/env python
+
+Import('env')
+
+from platform_methods import run_in_subprocess
+import platform_linuxbsd_builders
+
+common_x11 = [
+    "crash_handler_linuxbsd.cpp",
+    "os_linuxbsd.cpp",
+    "joypad_linux.cpp",
+    "context_gl_x11.cpp",
+    "detect_prime_x11.cpp",
+    "display_server_x11.cpp",
+    "vulkan_context_x11.cpp",
+    "key_mapping_x11.cpp",
+
+]
+
+prog = env.add_program('#bin/godot', ['godot_linuxbsd.cpp'] + common_x11)
+
+if (env["debug_symbols"] == "full" or env["debug_symbols"] == "yes") and env["separate_debug_symbols"]:
+    env.AddPostAction(prog, run_in_subprocess(platform_linuxbsd_builders.make_debug_linuxbsd))

platform/linuxbsd/context_gl_x11.cpp

@@ -0,0 +1,265 @@
+/*************************************************************************/
+/*  context_gl_x11.cpp                                                   */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "context_gl_x11.h"
+
+#ifdef X11_ENABLED
+#if defined(OPENGL_ENABLED)
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define GLX_GLXEXT_PROTOTYPES
+#include <GL/glx.h>
+#include <GL/glxext.h>
+
+#define GLX_CONTEXT_MAJOR_VERSION_ARB 0x2091
+#define GLX_CONTEXT_MINOR_VERSION_ARB 0x2092
+
+typedef GLXContext (*GLXCREATECONTEXTATTRIBSARBPROC)(Display *, GLXFBConfig, GLXContext, Bool, const int *);
+
+struct ContextGL_X11_Private {
+
+	::GLXContext glx_context;
+};
+
+void ContextGL_X11::release_current() {
+
+	glXMakeCurrent(x11_display, None, NULL);
+}
+
+void ContextGL_X11::make_current() {
+
+	glXMakeCurrent(x11_display, x11_window, p->glx_context);
+}
+
+void ContextGL_X11::swap_buffers() {
+
+	glXSwapBuffers(x11_display, x11_window);
+}
+
+static bool ctxErrorOccurred = false;
+static int ctxErrorHandler(Display *dpy, XErrorEvent *ev) {
+	ctxErrorOccurred = true;
+	return 0;
+}
+
+static void set_class_hint(Display *p_display, Window p_window) {
+	XClassHint *classHint;
+
+	/* set the name and class hints for the window manager to use */
+	classHint = XAllocClassHint();
+	if (classHint) {
+		classHint->res_name = (char *)"Godot_Engine";
+		classHint->res_class = (char *)"Godot";
+	}
+	XSetClassHint(p_display, p_window, classHint);
+	XFree(classHint);
+}
+
+Error ContextGL_X11::initialize() {
+
+	//const char *extensions = glXQueryExtensionsString(x11_display, DefaultScreen(x11_display));
+
+	GLXCREATECONTEXTATTRIBSARBPROC glXCreateContextAttribsARB = (GLXCREATECONTEXTATTRIBSARBPROC)glXGetProcAddress((const GLubyte *)"glXCreateContextAttribsARB");
+
+	ERR_FAIL_COND_V(!glXCreateContextAttribsARB, ERR_UNCONFIGURED);
+
+	static int visual_attribs[] = {
+		GLX_RENDER_TYPE, GLX_RGBA_BIT,
+		GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
+		GLX_DOUBLEBUFFER, true,
+		GLX_RED_SIZE, 1,
+		GLX_GREEN_SIZE, 1,
+		GLX_BLUE_SIZE, 1,
+		GLX_DEPTH_SIZE, 24,
+		None
+	};
+
+	static int visual_attribs_layered[] = {
+		GLX_RENDER_TYPE, GLX_RGBA_BIT,
+		GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
+		GLX_DOUBLEBUFFER, true,
+		GLX_RED_SIZE, 8,
+		GLX_GREEN_SIZE, 8,
+		GLX_BLUE_SIZE, 8,
+		GLX_ALPHA_SIZE, 8,
+		GLX_DEPTH_SIZE, 24,
+		None
+	};
+
+	int fbcount;
+	GLXFBConfig fbconfig = 0;
+	XVisualInfo *vi = NULL;
+
+	XSetWindowAttributes swa;
+	swa.event_mask = StructureNotifyMask;
+	swa.border_pixel = 0;
+	unsigned long valuemask = CWBorderPixel | CWColormap | CWEventMask;
+
+	if (OS::get_singleton()->is_layered_allowed()) {
+		GLXFBConfig *fbc = glXChooseFBConfig(x11_display, DefaultScreen(x11_display), visual_attribs_layered, &fbcount);
+		ERR_FAIL_COND_V(!fbc, ERR_UNCONFIGURED);
+
+		for (int i = 0; i < fbcount; i++) {
+			vi = (XVisualInfo *)glXGetVisualFromFBConfig(x11_display, fbc[i]);
+			if (!vi)
+				continue;
+
+			XRenderPictFormat *pict_format = XRenderFindVisualFormat(x11_display, vi->visual);
+			if (!pict_format) {
+				XFree(vi);
+				vi = NULL;
+				continue;
+			}
+
+			fbconfig = fbc[i];
+			if (pict_format->direct.alphaMask > 0) {
+				break;
+			}
+		}
+		XFree(fbc);
+		ERR_FAIL_COND_V(!fbconfig, ERR_UNCONFIGURED);
+
+		swa.background_pixmap = None;
+		swa.background_pixel = 0;
+		swa.border_pixmap = None;
+		valuemask |= CWBackPixel;
+
+	} else {
+		GLXFBConfig *fbc = glXChooseFBConfig(x11_display, DefaultScreen(x11_display), visual_attribs, &fbcount);
+		ERR_FAIL_COND_V(!fbc, ERR_UNCONFIGURED);
+
+		vi = glXGetVisualFromFBConfig(x11_display, fbc[0]);
+
+		fbconfig = fbc[0];
+		XFree(fbc);
+	}
+
+	int (*oldHandler)(Display *, XErrorEvent *) = XSetErrorHandler(&ctxErrorHandler);
+
+	switch (context_type) {
+		case GLES_2_0_COMPATIBLE: {
+
+			p->glx_context = glXCreateNewContext(x11_display, fbconfig, GLX_RGBA_TYPE, 0, true);
+			ERR_FAIL_COND_V(!p->glx_context, ERR_UNCONFIGURED);
+		} break;
+	}
+
+	swa.colormap = XCreateColormap(x11_display, RootWindow(x11_display, vi->screen), vi->visual, AllocNone);
+	x11_window = XCreateWindow(x11_display, RootWindow(x11_display, vi->screen), 0, 0, OS::get_singleton()->get_video_mode().width, OS::get_singleton()->get_video_mode().height, 0, vi->depth, InputOutput, vi->visual, valuemask, &swa);
+	XStoreName(x11_display, x11_window, "Godot Engine");
+
+	ERR_FAIL_COND_V(!x11_window, ERR_UNCONFIGURED);
+	set_class_hint(x11_display, x11_window);
+	XMapWindow(x11_display, x11_window);
+
+	XSync(x11_display, False);
+	XSetErrorHandler(oldHandler);
+
+	glXMakeCurrent(x11_display, x11_window, p->glx_context);
+
+	XFree(vi);
+
+	return OK;
+}
+
+int ContextGL_X11::get_window_width() {
+
+	XWindowAttributes xwa;
+	XGetWindowAttributes(x11_display, x11_window, &xwa);
+
+	return xwa.width;
+}
+
+int ContextGL_X11::get_window_height() {
+	XWindowAttributes xwa;
+	XGetWindowAttributes(x11_display, x11_window, &xwa);
+
+	return xwa.height;
+}
+
+void ContextGL_X11::set_use_vsync(bool p_use) {
+	static bool setup = false;
+	static PFNGLXSWAPINTERVALEXTPROC glXSwapIntervalEXT = NULL;
+	static PFNGLXSWAPINTERVALSGIPROC glXSwapIntervalMESA = NULL;
+	static PFNGLXSWAPINTERVALSGIPROC glXSwapIntervalSGI = NULL;
+
+	if (!setup) {
+		setup = true;
+		String extensions = glXQueryExtensionsString(x11_display, DefaultScreen(x11_display));
+		if (extensions.find("GLX_EXT_swap_control") != -1)
+			glXSwapIntervalEXT = (PFNGLXSWAPINTERVALEXTPROC)glXGetProcAddressARB((const GLubyte *)"glXSwapIntervalEXT");
+		if (extensions.find("GLX_MESA_swap_control") != -1)
+			glXSwapIntervalMESA = (PFNGLXSWAPINTERVALSGIPROC)glXGetProcAddressARB((const GLubyte *)"glXSwapIntervalMESA");
+		if (extensions.find("GLX_SGI_swap_control") != -1)
+			glXSwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC)glXGetProcAddressARB((const GLubyte *)"glXSwapIntervalSGI");
+	}
+	int val = p_use ? 1 : 0;
+	if (glXSwapIntervalMESA) {
+		glXSwapIntervalMESA(val);
+	} else if (glXSwapIntervalSGI) {
+		glXSwapIntervalSGI(val);
+	} else if (glXSwapIntervalEXT) {
+		GLXDrawable drawable = glXGetCurrentDrawable();
+		glXSwapIntervalEXT(x11_display, drawable, val);
+	} else
+		return;
+	use_vsync = p_use;
+}
+bool ContextGL_X11::is_using_vsync() const {
+
+	return use_vsync;
+}
+
+ContextGL_X11::ContextGL_X11(::Display *p_x11_display, ::Window &p_x11_window, const OS::VideoMode &p_default_video_mode, ContextType p_context_type) :
+		x11_window(p_x11_window) {
+
+	default_video_mode = p_default_video_mode;
+	x11_display = p_x11_display;
+
+	context_type = p_context_type;
+
+	double_buffer = false;
+	direct_render = false;
+	glx_minor = glx_major = 0;
+	p = memnew(ContextGL_X11_Private);
+	p->glx_context = 0;
+	use_vsync = false;
+}
+
+ContextGL_X11::~ContextGL_X11() {
+	release_current();
+	glXDestroyContext(x11_display, p->glx_context);
+	memdelete(p);
+}
+
+#endif
+#endif

platform/linuxbsd/context_gl_x11.h

@@ -0,0 +1,81 @@
+/*************************************************************************/
+/*  context_gl_x11.h                                                     */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef CONTEXT_GL_X11_H
+#define CONTEXT_GL_X11_H
+
+#ifdef X11_ENABLED
+
+#if defined(OPENGL_ENABLED)
+
+#include "core/os/os.h"
+#include <X11/Xlib.h>
+#include <X11/extensions/Xrender.h>
+
+struct ContextGL_X11_Private;
+
+class ContextGL_X11 {
+
+public:
+	enum ContextType {
+		GLES_2_0_COMPATIBLE,
+	};
+
+private:
+	ContextGL_X11_Private *p;
+	OS::VideoMode default_video_mode;
+	::Display *x11_display;
+	::Window &x11_window;
+	bool double_buffer;
+	bool direct_render;
+	int glx_minor, glx_major;
+	bool use_vsync;
+	ContextType context_type;
+
+public:
+	void release_current();
+	void make_current();
+	void swap_buffers();
+	int get_window_width();
+	int get_window_height();
+
+	Error initialize();
+
+	void set_use_vsync(bool p_use);
+	bool is_using_vsync() const;
+
+	ContextGL_X11(::Display *p_x11_display, ::Window &p_x11_window, const OS::VideoMode &p_default_video_mode, ContextType p_context_type);
+	~ContextGL_X11();
+};
+
+#endif
+
+#endif
+#endif

platform/linuxbsd/crash_handler_linuxbsd.cpp

@@ -0,0 +1,149 @@
+/*************************************************************************/
+/*  crash_handler_linuxbsd.cpp                                           */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "crash_handler_linuxbsd.h"
+
+#include "core/os/os.h"
+#include "core/project_settings.h"
+#include "main/main.h"
+
+#ifdef DEBUG_ENABLED
+#define CRASH_HANDLER_ENABLED 1
+#endif
+
+#ifdef CRASH_HANDLER_ENABLED
+#include <cxxabi.h>
+#include <dlfcn.h>
+#include <execinfo.h>
+#include <signal.h>
+#include <stdlib.h>
+
+static void handle_crash(int sig) {
+	if (OS::get_singleton() == NULL) {
+		abort();
+	}
+
+	void *bt_buffer[256];
+	size_t size = backtrace(bt_buffer, 256);
+	String _execpath = OS::get_singleton()->get_executable_path();
+
+	String msg;
+	const ProjectSettings *proj_settings = ProjectSettings::get_singleton();
+	if (proj_settings) {
+		msg = proj_settings->get("debug/settings/crash_handler/message");
+	}
+
+	// Dump the backtrace to stderr with a message to the user
+	fprintf(stderr, "%s: Program crashed with signal %d\n", __FUNCTION__, sig);
+
+	if (OS::get_singleton()->get_main_loop())
+		OS::get_singleton()->get_main_loop()->notification(MainLoop::NOTIFICATION_CRASH);
+
+	fprintf(stderr, "Dumping the backtrace. %ls\n", msg.c_str());
+	char **strings = backtrace_symbols(bt_buffer, size);
+	if (strings) {
+		for (size_t i = 1; i < size; i++) {
+			char fname[1024];
+			Dl_info info;
+
+			snprintf(fname, 1024, "%s", strings[i]);
+
+			// Try to demangle the function name to provide a more readable one
+			if (dladdr(bt_buffer[i], &info) && info.dli_sname) {
+				if (info.dli_sname[0] == '_') {
+					int status;
+					char *demangled = abi::__cxa_demangle(info.dli_sname, NULL, 0, &status);
+
+					if (status == 0 && demangled) {
+						snprintf(fname, 1024, "%s", demangled);
+					}
+
+					if (demangled)
+						free(demangled);
+				}
+			}
+
+			List<String> args;
+
+			char str[1024];
+			snprintf(str, 1024, "%p", bt_buffer[i]);
+			args.push_back(str);
+			args.push_back("-e");
+			args.push_back(_execpath);
+
+			String output = "";
+
+			// Try to get the file/line number using addr2line
+			int ret;
+			Error err = OS::get_singleton()->execute(String("addr2line"), args, true, NULL, &output, &ret);
+			if (err == OK) {
+				output.erase(output.length() - 1, 1);
+			}
+
+			fprintf(stderr, "[%ld] %s (%ls)\n", (long int)i, fname, output.c_str());
+		}
+
+		free(strings);
+	}
+	fprintf(stderr, "-- END OF BACKTRACE --\n");
+
+	// Abort to pass the error to the OS
+	abort();
+}
+#endif
+
+CrashHandler::CrashHandler() {
+	disabled = false;
+}
+
+CrashHandler::~CrashHandler() {
+	disable();
+}
+
+void CrashHandler::disable() {
+	if (disabled)
+		return;
+
+#ifdef CRASH_HANDLER_ENABLED
+	signal(SIGSEGV, NULL);
+	signal(SIGFPE, NULL);
+	signal(SIGILL, NULL);
+#endif
+
+	disabled = true;
+}
+
+void CrashHandler::initialize() {
+#ifdef CRASH_HANDLER_ENABLED
+	signal(SIGSEGV, handle_crash);
+	signal(SIGFPE, handle_crash);
+	signal(SIGILL, handle_crash);
+#endif
+}

platform/linuxbsd/crash_handler_linuxbsd.h

@@ -0,0 +1,48 @@
+/*************************************************************************/
+/*  crash_handler_linuxbsd.h                                             */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef CRASH_HANDLER_X11_H
+#define CRASH_HANDLER_X11_H
+
+class CrashHandler {
+
+	bool disabled;
+
+public:
+	void initialize();
+
+	void disable();
+	bool is_disabled() const { return disabled; };
+
+	CrashHandler();
+	~CrashHandler();
+};
+
+#endif // CRASH_HANDLER_X11_H

platform/linuxbsd/detect.py

@@ -0,0 +1,368 @@
+import os
+import platform
+import sys
+
+
+def is_active():
+    return True
+
+
+def get_name():
+    return "LinuxBSD"
+
+
+def can_build():
+
+    if (os.name != "posix" or sys.platform == "darwin"):
+        return False
+
+    # Check the minimal dependencies
+    x11_error = os.system("pkg-config --version > /dev/null")
+    if (x11_error):
+        return False
+
+    x11_error = os.system("pkg-config x11 --modversion > /dev/null ")
+    if (x11_error):
+        return False
+
+    x11_error = os.system("pkg-config xcursor --modversion > /dev/null ")
+    if (x11_error):
+        print("xcursor not found.. x11 disabled.")
+        return False
+
+    x11_error = os.system("pkg-config xinerama --modversion > /dev/null ")
+    if (x11_error):
+        print("xinerama not found.. x11 disabled.")
+        return False
+
+    x11_error = os.system("pkg-config xrandr --modversion > /dev/null ")
+    if (x11_error):
+        print("xrandr not found.. x11 disabled.")
+        return False
+
+    x11_error = os.system("pkg-config xrender --modversion > /dev/null ")
+    if (x11_error):
+        print("xrender not found.. x11 disabled.")
+        return False
+
+    x11_error = os.system("pkg-config xi --modversion > /dev/null ")
+    if (x11_error):
+        print("xi not found.. Aborting.")
+        return False
+
+    return True
+
+def get_opts():
+    from SCons.Variables import BoolVariable, EnumVariable
+
+    return [
+        BoolVariable('use_llvm', 'Use the LLVM compiler', False),
+        BoolVariable('use_lld', 'Use the LLD linker', False),
+        BoolVariable('use_thinlto', 'Use ThinLTO', False),
+        BoolVariable('use_static_cpp', 'Link libgcc and libstdc++ statically for better portability', False),
+        BoolVariable('use_coverage', 'Test Godot coverage', False),
+        BoolVariable('use_ubsan', 'Use LLVM/GCC compiler undefined behavior sanitizer (UBSAN)', False),
+        BoolVariable('use_asan', 'Use LLVM/GCC compiler address sanitizer (ASAN))', False),
+        BoolVariable('use_lsan', 'Use LLVM/GCC compiler leak sanitizer (LSAN))', False),
+        BoolVariable('use_tsan', 'Use LLVM/GCC compiler thread sanitizer (TSAN))', False),
+        BoolVariable('pulseaudio', 'Detect and use PulseAudio', True),
+        BoolVariable('udev', 'Use udev for gamepad connection callbacks', False),
+        EnumVariable('debug_symbols', 'Add debugging symbols to release builds', 'yes', ('yes', 'no', 'full')),
+        BoolVariable('separate_debug_symbols', 'Create a separate file containing debugging symbols', False),
+        BoolVariable('touch', 'Enable touch events', True),
+        BoolVariable('execinfo', 'Use libexecinfo on systems where glibc is not available', False),
+    ]
+
+
+def get_flags():
+
+    return []
+
+
+def configure(env):
+
+    ## Build type
+
+    if (env["target"] == "release"):
+        if (env["optimize"] == "speed"): #optimize for speed (default)
+            env.Prepend(CCFLAGS=['-O3'])
+        else: #optimize for size
+            env.Prepend(CCFLAGS=['-Os'])
+
+        if (env["debug_symbols"] == "yes"):
+            env.Prepend(CCFLAGS=['-g1'])
+        if (env["debug_symbols"] == "full"):
+            env.Prepend(CCFLAGS=['-g2'])
+
+    elif (env["target"] == "release_debug"):
+        if (env["optimize"] == "speed"): #optimize for speed (default)
+            env.Prepend(CCFLAGS=['-O2'])
+        else: #optimize for size
+            env.Prepend(CCFLAGS=['-Os'])
+        env.Prepend(CPPDEFINES=['DEBUG_ENABLED'])
+
+        if (env["debug_symbols"] == "yes"):
+            env.Prepend(CCFLAGS=['-g1'])
+        if (env["debug_symbols"] == "full"):
+            env.Prepend(CCFLAGS=['-g2'])
+
+    elif (env["target"] == "debug"):
+        env.Prepend(CCFLAGS=['-g3'])
+        env.Prepend(CPPDEFINES=['DEBUG_ENABLED', 'DEBUG_MEMORY_ENABLED'])
+        env.Append(LINKFLAGS=['-rdynamic'])
+
+    ## Architecture
+
+    is64 = sys.maxsize > 2**32
+    if (env["bits"] == "default"):
+        env["bits"] = "64" if is64 else "32"
+
+    ## Compiler configuration
+
+    if 'CXX' in env and 'clang' in os.path.basename(env['CXX']):
+        # Convenience check to enforce the use_llvm overrides when CXX is clang(++)
+        env['use_llvm'] = True
+
+    if env['use_llvm']:
+        if ('clang++' not in os.path.basename(env['CXX'])):
+            env["CC"] = "clang"
+            env["CXX"] = "clang++"
+            env["LINK"] = "clang++"
+        env.Append(CPPDEFINES=['TYPED_METHOD_BIND'])
+        env.extra_suffix = ".llvm" + env.extra_suffix
+
+    if env['use_lld']:
+        if env['use_llvm']:
+            env.Append(LINKFLAGS=['-fuse-ld=lld'])
+            if env['use_thinlto']:
+                # A convenience so you don't need to write use_lto too when using SCons
+                env['use_lto'] = True
+        else:
+            print("Using LLD with GCC is not supported yet, try compiling with 'use_llvm=yes'.")
+            sys.exit(255)
+
+    if env['use_coverage']:
+        env.Append(CCFLAGS=['-ftest-coverage', '-fprofile-arcs'])
+        env.Append(LINKFLAGS=['-ftest-coverage', '-fprofile-arcs'])
+
+    if env['use_ubsan'] or env['use_asan'] or env['use_lsan'] or env['use_tsan']:
+        env.extra_suffix += "s"
+
+        if env['use_ubsan']:
+            env.Append(CCFLAGS=['-fsanitize=undefined'])
+            env.Append(LINKFLAGS=['-fsanitize=undefined'])
+
+        if env['use_asan']:
+            env.Append(CCFLAGS=['-fsanitize=address'])
+            env.Append(LINKFLAGS=['-fsanitize=address'])
+
+        if env['use_lsan']:
+            env.Append(CCFLAGS=['-fsanitize=leak'])
+            env.Append(LINKFLAGS=['-fsanitize=leak'])
+
+        if env['use_tsan']:
+            env.Append(CCFLAGS=['-fsanitize=thread'])
+            env.Append(LINKFLAGS=['-fsanitize=thread'])
+
+    if env['use_lto']:
+        if not env['use_llvm'] and env.GetOption("num_jobs") > 1:
+            env.Append(CCFLAGS=['-flto'])
+            env.Append(LINKFLAGS=['-flto=' + str(env.GetOption("num_jobs"))])
+        else:
+            if env['use_lld'] and env['use_thinlto']:
+                env.Append(CCFLAGS=['-flto=thin'])
+                env.Append(LINKFLAGS=['-flto=thin'])
+            else:
+                env.Append(CCFLAGS=['-flto'])
+                env.Append(LINKFLAGS=['-flto'])
+
+        if not env['use_llvm']:
+            env['RANLIB'] = 'gcc-ranlib'
+            env['AR'] = 'gcc-ar'
+
+    env.Append(CCFLAGS=['-pipe'])
+    env.Append(LINKFLAGS=['-pipe'])
+
+    # -fpie and -no-pie is supported on GCC 6+ and Clang 4+, both below our
+    # minimal requirements.
+    env.Append(CCFLAGS=['-fpie'])
+    env.Append(LINKFLAGS=['-no-pie'])
+
+    ## Dependencies
+
+    env.ParseConfig('pkg-config x11 --cflags --libs')
+    env.ParseConfig('pkg-config xcursor --cflags --libs')
+    env.ParseConfig('pkg-config xinerama --cflags --libs')
+    env.ParseConfig('pkg-config xrandr --cflags --libs')
+    env.ParseConfig('pkg-config xrender --cflags --libs')
+    env.ParseConfig('pkg-config xi --cflags --libs')
+
+    if (env['touch']):
+        env.Append(CPPDEFINES=['TOUCH_ENABLED'])
+
+    # FIXME: Check for existence of the libs before parsing their flags with pkg-config
+
+    # freetype depends on libpng and zlib, so bundling one of them while keeping others
+    # as shared libraries leads to weird issues
+    if env['builtin_freetype'] or env['builtin_libpng'] or env['builtin_zlib']:
+        env['builtin_freetype'] = True
+        env['builtin_libpng'] = True
+        env['builtin_zlib'] = True
+
+    if not env['builtin_freetype']:
+        env.ParseConfig('pkg-config freetype2 --cflags --libs')
+
+    if not env['builtin_libpng']:
+        env.ParseConfig('pkg-config libpng16 --cflags --libs')
+
+    if not env['builtin_bullet']:
+        # We need at least version 2.89
+        import subprocess
+        bullet_version = subprocess.check_output(['pkg-config', 'bullet', '--modversion']).strip()
+        if str(bullet_version) < "2.89":
+            # Abort as system bullet was requested but too old
+            print("Bullet: System version {0} does not match minimal requirements ({1}). Aborting.".format(bullet_version, "2.89"))
+            sys.exit(255)
+        env.ParseConfig('pkg-config bullet --cflags --libs')
+
+    if False:  # not env['builtin_assimp']:
+        # FIXME: Add min version check
+        env.ParseConfig('pkg-config assimp --cflags --libs')
+
+    if not env['builtin_enet']:
+        env.ParseConfig('pkg-config libenet --cflags --libs')
+
+    if not env['builtin_squish']:
+        env.ParseConfig('pkg-config libsquish --cflags --libs')
+
+    if not env['builtin_zstd']:
+        env.ParseConfig('pkg-config libzstd --cflags --libs')
+
+    # Sound and video libraries
+    # Keep the order as it triggers chained dependencies (ogg needed by others, etc.)
+
+    if not env['builtin_libtheora']:
+        env['builtin_libogg'] = False  # Needed to link against system libtheora
+        env['builtin_libvorbis'] = False  # Needed to link against system libtheora
+        env.ParseConfig('pkg-config theora theoradec --cflags --libs')
+    else:
+        list_of_x86 = ['x86_64', 'x86', 'i386', 'i586']
+        if any(platform.machine() in s for s in list_of_x86):
+            env["x86_libtheora_opt_gcc"] = True
+
+    if not env['builtin_libvpx']:
+        env.ParseConfig('pkg-config vpx --cflags --libs')
+
+    if not env['builtin_libvorbis']:
+        env['builtin_libogg'] = False  # Needed to link against system libvorbis
+        env.ParseConfig('pkg-config vorbis vorbisfile --cflags --libs')
+
+    if not env['builtin_opus']:
+        env['builtin_libogg'] = False  # Needed to link against system opus
+        env.ParseConfig('pkg-config opus opusfile --cflags --libs')
+
+    if not env['builtin_libogg']:
+        env.ParseConfig('pkg-config ogg --cflags --libs')
+
+    if not env['builtin_libwebp']:
+        env.ParseConfig('pkg-config libwebp --cflags --libs')
+
+    if not env['builtin_mbedtls']:
+        # mbedTLS does not provide a pkgconfig config yet. See https://github.com/ARMmbed/mbedtls/issues/228
+        env.Append(LIBS=['mbedtls', 'mbedcrypto', 'mbedx509'])
+
+    if not env['builtin_wslay']:
+        env.ParseConfig('pkg-config libwslay --cflags --libs')
+
+    if not env['builtin_miniupnpc']:
+        # No pkgconfig file so far, hardcode default paths.
+        env.Prepend(CPPPATH=["/usr/include/miniupnpc"])
+        env.Append(LIBS=["miniupnpc"])
+
+    # On Linux wchar_t should be 32-bits
+    # 16-bit library shouldn't be required due to compiler optimisations
+    if not env['builtin_pcre2']:
+        env.ParseConfig('pkg-config libpcre2-32 --cflags --libs')
+
+    ## Flags
+
+    if (os.system("pkg-config --exists alsa") == 0): # 0 means found
+        print("Enabling ALSA")
+        env.Append(CPPDEFINES=["ALSA_ENABLED", "ALSAMIDI_ENABLED"])
+	# Don't parse --cflags, we don't need to add /usr/include/alsa to include path
+        env.ParseConfig('pkg-config alsa --libs')
+    else:
+        print("ALSA libraries not found, disabling driver")
+
+    if env['pulseaudio']:
+        if (os.system("pkg-config --exists libpulse") == 0): # 0 means found
+            print("Enabling PulseAudio")
+            env.Append(CPPDEFINES=["PULSEAUDIO_ENABLED"])
+            env.ParseConfig('pkg-config --cflags --libs libpulse')
+        else:
+            print("PulseAudio development libraries not found, disabling driver")
+
+    if (platform.system() == "Linux"):
+        env.Append(CPPDEFINES=["JOYDEV_ENABLED"])
+
+        if env['udev']:
+            if (os.system("pkg-config --exists libudev") == 0): # 0 means found
+                print("Enabling udev support")
+                env.Append(CPPDEFINES=["UDEV_ENABLED"])
+                env.ParseConfig('pkg-config libudev --cflags --libs')
+            else:
+                print("libudev development libraries not found, disabling udev support")
+
+    # Linkflags below this line should typically stay the last ones
+    if not env['builtin_zlib']:
+        env.ParseConfig('pkg-config zlib --cflags --libs')
+
+    env.Prepend(CPPPATH=['#platform/linuxbsd'])
+    env.Append(CPPDEFINES=['X11_ENABLED', 'UNIX_ENABLED'])
+
+    env.Append(CPPDEFINES=['VULKAN_ENABLED'])
+    if not env['builtin_vulkan']:
+        env.ParseConfig('pkg-config vulkan --cflags --libs')
+    if not env['builtin_glslang']:
+        # No pkgconfig file for glslang so far
+        env.Append(LIBS=['glslang', 'SPIRV'])
+
+    #env.Append(CPPDEFINES=['OPENGL_ENABLED'])
+    env.Append(LIBS=['GL'])
+
+    env.Append(LIBS=['pthread'])
+
+    if (platform.system() == "Linux"):
+        env.Append(LIBS=['dl'])
+
+    if (platform.system().find("BSD") >= 0):
+        env["execinfo"] = True
+
+    if env["execinfo"]:
+        env.Append(LIBS=['execinfo'])
+
+    if not env['tools']:
+        import subprocess
+        import re
+        linker_version_str = subprocess.check_output([env.subst(env["LINK"]), '-Wl,--version']).decode("utf-8")
+        gnu_ld_version = re.search('^GNU ld [^$]*(\d+\.\d+)$', linker_version_str, re.MULTILINE)
+        if not gnu_ld_version:
+            print("Warning: Creating template binaries enabled for PCK embedding is currently only supported with GNU ld")
+        else:
+            if float(gnu_ld_version.group(1)) >= 2.30:
+                env.Append(LINKFLAGS=['-T', 'platform/linuxbsd/pck_embed.ld'])
+            else:
+                env.Append(LINKFLAGS=['-T', 'platform/linuxbsd/pck_embed.legacy.ld'])
+
+    ## Cross-compilation
+
+    if (is64 and env["bits"] == "32"):
+        env.Append(CCFLAGS=['-m32'])
+        env.Append(LINKFLAGS=['-m32', '-L/usr/lib/i386-linux-gnu'])
+    elif (not is64 and env["bits"] == "64"):
+        env.Append(CCFLAGS=['-m64'])
+        env.Append(LINKFLAGS=['-m64', '-L/usr/lib/i686-linux-gnu'])
+
+    # Link those statically for portability
+    if env['use_static_cpp']:
+        env.Append(LINKFLAGS=['-static-libgcc', '-static-libstdc++'])

platform/linuxbsd/detect_prime_x11.cpp

@@ -0,0 +1,238 @@
+/*************************************************************************/
+/*  detect_prime_x11.cpp                                                 */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifdef X11_ENABLED
+#if defined(OPENGL_ENABLED)
+
+#include "detect_prime.h"
+
+#include "core/print_string.h"
+#include "core/ustring.h"
+
+#include <stdlib.h>
+
+#include <GL/gl.h>
+#include <GL/glx.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+
+#include <cstring>
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#define GLX_CONTEXT_MAJOR_VERSION_ARB 0x2091
+#define GLX_CONTEXT_MINOR_VERSION_ARB 0x2092
+
+typedef GLXContext (*GLXCREATECONTEXTATTRIBSARBPROC)(Display *, GLXFBConfig, GLXContext, Bool, const int *);
+
+struct vendor {
+	const char *glxvendor;
+	int priority;
+};
+
+vendor vendormap[] = {
+	{ "Advanced Micro Devices, Inc.", 30 },
+	{ "NVIDIA Corporation", 30 },
+	{ "X.Org", 30 },
+	{ "Intel Open Source Technology Center", 20 },
+	{ "Intel", 20 },
+	{ "nouveau", 10 },
+	{ "Mesa Project", 0 },
+	{ NULL, 0 }
+};
+
+// Runs inside a child. Exiting will not quit the engine.
+void create_context() {
+	Display *x11_display = XOpenDisplay(NULL);
+	Window x11_window;
+	GLXContext glx_context;
+
+	GLXCREATECONTEXTATTRIBSARBPROC glXCreateContextAttribsARB = (GLXCREATECONTEXTATTRIBSARBPROC)glXGetProcAddress((const GLubyte *)"glXCreateContextAttribsARB");
+
+	static int visual_attribs[] = {
+		GLX_RENDER_TYPE, GLX_RGBA_BIT,
+		GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
+		GLX_DOUBLEBUFFER, true,
+		GLX_RED_SIZE, 1,
+		GLX_GREEN_SIZE, 1,
+		GLX_BLUE_SIZE, 1,
+		GLX_DEPTH_SIZE, 24,
+		None
+	};
+
+	int fbcount;
+	GLXFBConfig fbconfig = 0;
+	XVisualInfo *vi = NULL;
+
+	XSetWindowAttributes swa;
+	swa.event_mask = StructureNotifyMask;
+	swa.border_pixel = 0;
+	unsigned long valuemask = CWBorderPixel | CWColormap | CWEventMask;
+
+	GLXFBConfig *fbc = glXChooseFBConfig(x11_display, DefaultScreen(x11_display), visual_attribs, &fbcount);
+	if (!fbc)
+		exit(1);
+
+	vi = glXGetVisualFromFBConfig(x11_display, fbc[0]);
+
+	fbconfig = fbc[0];
+
+	static int context_attribs[] = {
+		GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
+		GLX_CONTEXT_MINOR_VERSION_ARB, 3,
+		GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
+		GLX_CONTEXT_FLAGS_ARB, GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
+		None
+	};
+
+	glx_context = glXCreateContextAttribsARB(x11_display, fbconfig, NULL, true, context_attribs);
+
+	swa.colormap = XCreateColormap(x11_display, RootWindow(x11_display, vi->screen), vi->visual, AllocNone);
+	x11_window = XCreateWindow(x11_display, RootWindow(x11_display, vi->screen), 0, 0, 10, 10, 0, vi->depth, InputOutput, vi->visual, valuemask, &swa);
+
+	if (!x11_window)
+		exit(1);
+
+	glXMakeCurrent(x11_display, x11_window, glx_context);
+	XFree(vi);
+}
+
+int detect_prime() {
+	pid_t p;
+	int priorities[2];
+	String vendors[2];
+	String renderers[2];
+
+	vendors[0] = "Unknown";
+	vendors[1] = "Unknown";
+	renderers[0] = "Unknown";
+	renderers[1] = "Unknown";
+
+	for (int i = 0; i < 2; ++i) {
+		int fdset[2];
+
+		if (pipe(fdset) == -1) {
+			print_verbose("Failed to pipe(), using default GPU");
+			return 0;
+		}
+
+		// Fork so the driver initialization can crash without taking down the engine.
+		p = fork();
+
+		if (p > 0) {
+			// Main thread
+
+			int stat_loc = 0;
+			char string[201];
+			string[200] = '\0';
+
+			close(fdset[1]);
+
+			waitpid(p, &stat_loc, 0);
+
+			if (!stat_loc) {
+				// No need to do anything complicated here. Anything less than
+				// PIPE_BUF will be delivered in one read() call.
+				// Leave it 'Unknown' otherwise.
+				if (read(fdset[0], string, sizeof(string) - 1) > 0) {
+					vendors[i] = string;
+					renderers[i] = string + strlen(string) + 1;
+				}
+			}
+
+			close(fdset[0]);
+
+		} else {
+			// In child, exit() here will not quit the engine.
+
+			char string[201];
+
+			close(fdset[0]);
+
+			if (i) setenv("DRI_PRIME", "1", 1);
+			create_context();
+
+			const char *vendor = (const char *)glGetString(GL_VENDOR);
+			const char *renderer = (const char *)glGetString(GL_RENDERER);
+
+			unsigned int vendor_len = strlen(vendor) + 1;
+			unsigned int renderer_len = strlen(renderer) + 1;
+
+			if (vendor_len + renderer_len >= sizeof(string)) {
+				renderer_len = 200 - vendor_len;
+			}
+
+			memcpy(&string, vendor, vendor_len);
+			memcpy(&string[vendor_len], renderer, renderer_len);
+
+			if (write(fdset[1], string, vendor_len + renderer_len) == -1) {
+				print_verbose("Couldn't write vendor/renderer string.");
+			}
+			close(fdset[1]);
+			exit(0);
+		}
+	}
+
+	int preferred = 0;
+	int priority = 0;
+
+	if (vendors[0] == vendors[1]) {
+		print_verbose("Only one GPU found, using default.");
+		return 0;
+	}
+
+	for (int i = 1; i >= 0; --i) {
+		vendor *v = vendormap;
+		while (v->glxvendor) {
+			if (v->glxvendor == vendors[i]) {
+				priorities[i] = v->priority;
+
+				if (v->priority >= priority) {
+					priority = v->priority;
+					preferred = i;
+				}
+			}
+			++v;
+		}
+	}
+
+	print_verbose("Found renderers:");
+	for (int i = 0; i < 2; ++i) {
+		print_verbose("Renderer " + itos(i) + ": " + renderers[i] + " with priority: " + itos(priorities[i]));
+	}
+
+	print_verbose("Using renderer: " + renderers[preferred]);
+	return preferred;
+}
+
+#endif
+#endif

platform/linuxbsd/detect_prime_x11.h

@@ -0,0 +1,37 @@
+/*************************************************************************/
+/*  detect_prime_x11.h                                                   */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifdef X11_ENABLED
+#if defined(OPENGL_ENABLED)
+
+int detect_prime();
+
+#endif
+#endif

platform/linuxbsd/display_server_x11.h

@@ -0,0 +1,323 @@
+/*************************************************************************/
+/*  display_server_x11.h                                                 */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef DISPLAY_SERVER_X11_H
+#define DISPLAY_SERVER_X11_H
+
+#ifdef X11_ENABLED
+
+#include "servers/display_server.h"
+
+#include "core/input/input.h"
+
+#include "drivers/alsa/audio_driver_alsa.h"
+#include "drivers/alsamidi/midi_driver_alsamidi.h"
+#include "drivers/pulseaudio/audio_driver_pulseaudio.h"
+#include "drivers/unix/os_unix.h"
+#include "joypad_linux.h"
+#include "servers/audio_server.h"
+#include "servers/visual/rasterizer.h"
+#include "servers/visual_server.h"
+
+#if defined(OPENGL_ENABLED)
+#include "context_gl_x11.h"
+#endif
+
+#if defined(VULKAN_ENABLED)
+#include "drivers/vulkan/rendering_device_vulkan.h"
+#include "platform/linuxbsd/vulkan_context_x11.h"
+#endif
+
+#include <X11/Xcursor/Xcursor.h>
+#include <X11/Xlib.h>
+#include <X11/extensions/XInput2.h>
+#include <X11/extensions/Xrandr.h>
+#include <X11/keysym.h>
+
+// Hints for X11 fullscreen
+typedef struct {
+	unsigned long flags;
+	unsigned long functions;
+	unsigned long decorations;
+	long inputMode;
+	unsigned long status;
+} Hints;
+
+typedef struct _xrr_monitor_info {
+	Atom name;
+	Bool primary;
+	Bool automatic;
+	int noutput;
+	int x;
+	int y;
+	int width;
+	int height;
+	int mwidth;
+	int mheight;
+	RROutput *outputs;
+} xrr_monitor_info;
+
+#undef CursorShape
+
+class DisplayServerX11 : public DisplayServer {
+	//No need to register, it's platform-specific and nothing is added
+	//GDCLASS(DisplayServerX11, DisplayServer)
+
+	Atom wm_delete;
+	Atom xdnd_enter;
+	Atom xdnd_position;
+	Atom xdnd_status;
+	Atom xdnd_action_copy;
+	Atom xdnd_drop;
+	Atom xdnd_finished;
+	Atom xdnd_selection;
+	Atom xdnd_aware;
+	Atom requested;
+	int xdnd_version;
+
+#if defined(OPENGL_ENABLED)
+	ContextGL_X11 *context_gles2;
+#endif
+#if defined(VULKAN_ENABLED)
+	VulkanContextX11 *context_vulkan;
+	RenderingDeviceVulkan *rendering_device_vulkan;
+#endif
+
+	struct WindowData {
+		Window x11_window;
+		::XIC xic;
+#if defined(VULKAN_ENABLED)
+		int vulkan_window;
+#endif
+		Size2i min_size;
+		Size2i max_size;
+		Size2i size;
+		Size2i im_position;
+		bool im_active = false;
+
+		//better to guess on the fly, given WM can change it
+		//WindowMode mode;
+		bool fullscreen = false; //OS can't exit from this mode
+		bool on_top = false;
+		bool borderless = false;
+		bool resize_disabled = false;
+		Vector2i last_position_before_fs;
+	};
+
+	Map<WindowID, WindowData> windows;
+
+	WindowID window_id_counter = MAIN_WINDOW_ID;
+	WindowID _create_window(WindowMode p_mode, const Vector2i &p_resolution);
+
+	String internal_clipboard;
+	Window xdnd_source_window;
+	::Display *x11_display;
+	char *xmbstring;
+	int xmblen;
+	unsigned long last_timestamp;
+	::Time last_keyrelease_time;
+	::XIM xim;
+	::XIMStyle xim_style;
+	static void _xim_destroy_callback(::XIM im, ::XPointer client_data,
+			::XPointer call_data);
+
+	Point2i last_mouse_pos;
+	bool last_mouse_pos_valid;
+	Point2i last_click_pos;
+	uint64_t last_click_ms;
+	int last_click_button_index;
+	uint32_t last_button_state;
+
+	struct {
+		int opcode;
+		Vector<int> touch_devices;
+		Map<int, Vector2> absolute_devices;
+		Map<int, Vector3> pen_devices;
+		XIEventMask all_event_mask;
+		Map<int, Vector2> state;
+		double pressure;
+		Vector2 tilt;
+		Vector2 mouse_pos_to_filter;
+		Vector2 relative_motion;
+		Vector2 raw_pos;
+		Vector2 old_raw_pos;
+		::Time last_relative_time;
+	} xi;
+
+	bool _refresh_device_info();
+
+	unsigned int _get_mouse_button_state(unsigned int p_x11_button, int p_x11_type);
+	void _get_key_modifier_state(unsigned int p_x11_state, Ref<InputEventWithModifiers> state);
+	void _flush_mouse_motion();
+
+	MouseMode mouse_mode;
+	Point2i center;
+
+	void _handle_key_event(WindowID p_window, XKeyEvent *p_event, bool p_echo = false);
+
+	bool force_quit;
+	bool minimized;
+	bool window_has_focus;
+	bool do_mouse_warp;
+
+	const char *cursor_theme;
+	int cursor_size;
+	XcursorImage *img[CURSOR_MAX];
+	Cursor cursors[CURSOR_MAX];
+	Cursor null_cursor;
+	CursorShape current_cursor;
+	Map<CursorShape, Vector<Variant>> cursors_cache;
+
+	bool layered_window;
+
+	String rendering_driver;
+	bool window_focused;
+	//void set_wm_border(bool p_enabled);
+	void set_wm_fullscreen(bool p_enabled);
+	void set_wm_above(bool p_enabled);
+
+	typedef xrr_monitor_info *(*xrr_get_monitors_t)(Display *dpy, Window window, Bool get_active, int *nmonitors);
+	typedef void (*xrr_free_monitors_t)(xrr_monitor_info *monitors);
+	xrr_get_monitors_t xrr_get_monitors;
+	xrr_free_monitors_t xrr_free_monitors;
+	void *xrandr_handle;
+	Bool xrandr_ext_ok;
+
+	struct Property {
+		unsigned char *data;
+		int format, nitems;
+		Atom type;
+	};
+	static Property _read_property(Display *p_display, Window p_window, Atom p_property);
+
+	void _update_real_mouse_position(const WindowData &wd);
+	void _set_wm_fullscreen(WindowID p_window, bool p_enabled);
+	void _set_wm_maximized(WindowID p_window, bool p_enabled);
+
+	void _update_context(WindowData &wd);
+
+	Context context = CONTEXT_ENGINE;
+
+protected:
+	void _window_changed(XEvent *event);
+
+public:
+	virtual bool has_feature(Feature p_feature) const;
+	virtual String get_name() const;
+
+	virtual void alert(const String &p_alert, const String &p_title = "ALERT!");
+
+	virtual void mouse_set_mode(MouseMode p_mode);
+	virtual MouseMode mouse_get_mode() const;
+
+	virtual void mouse_warp_to_position(const Point2i &p_to);
+	virtual Point2i mouse_get_position() const;
+	virtual int mouse_get_button_state() const;
+
+	virtual void clipboard_set(const String &p_text);
+	virtual String clipboard_get() const;
+
+	virtual int get_screen_count() const;
+	virtual Point2i screen_get_position(int p_screen = SCREEN_OF_MAIN_WINDOW) const;
+	virtual Size2i screen_get_size(int p_screen = SCREEN_OF_MAIN_WINDOW) const;
+	virtual int screen_get_dpi(int p_screen = SCREEN_OF_MAIN_WINDOW) const;
+	virtual bool screen_is_touchscreen(int p_screen = SCREEN_OF_MAIN_WINDOW) const;
+
+	virtual Vector<int> get_window_list() const;
+
+	virtual WindowID create_sub_window(WindowMode p_mode, uint32_t p_flags, const Rect2i &p_rect = Rect2i());
+	virtual void delete_sub_window(WindowID p_id);
+
+	virtual void window_set_title(const String &p_title, WindowID p_window = MAIN_WINDOW_ID);
+
+	virtual int window_get_current_screen(WindowID p_window = MAIN_WINDOW_ID) const;
+	virtual void window_set_current_screen(int p_screen, WindowID p_window = MAIN_WINDOW_ID);
+
+	virtual Point2i window_get_position(WindowID p_window = MAIN_WINDOW_ID) const;
+	virtual void window_set_position(const Point2i &p_position, WindowID p_window = MAIN_WINDOW_ID);
+
+	virtual void window_set_max_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID);
+	virtual Size2i window_get_max_size(WindowID p_window = MAIN_WINDOW_ID) const;
+
+	virtual void window_set_min_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID);
+	virtual Size2i window_get_min_size(WindowID p_window = MAIN_WINDOW_ID) const;
+
+	virtual void window_set_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID);
+	virtual Size2i window_get_size(WindowID p_window = MAIN_WINDOW_ID) const;
+	virtual Size2i window_get_real_size(WindowID p_window = MAIN_WINDOW_ID) const;
+
+	virtual void window_set_mode(WindowMode p_mode, WindowID p_window = MAIN_WINDOW_ID);
+	virtual WindowMode window_get_mode(WindowID p_window = MAIN_WINDOW_ID) const;
+
+	virtual bool window_is_maximize_allowed(WindowID p_window = MAIN_WINDOW_ID) const;
+
+	virtual void window_set_flag(WindowFlags p_flag, bool p_enabled, WindowID p_window = MAIN_WINDOW_ID);
+	virtual bool window_get_flag(WindowFlags p_flag, WindowID p_window = MAIN_WINDOW_ID) const;
+
+	virtual void window_request_attention(WindowID p_window = MAIN_WINDOW_ID);
+
+	virtual void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID);
+
+	virtual bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const;
+
+	virtual bool can_any_window_draw() const;
+
+	virtual void window_set_ime_active(const bool p_active, WindowID p_window = MAIN_WINDOW_ID);
+	virtual void window_set_ime_position(const Point2i &p_pos, WindowID p_window = MAIN_WINDOW_ID);
+
+	virtual void cursor_set_shape(CursorShape p_shape);
+	virtual CursorShape cursor_get_shape() const;
+	virtual void cursor_set_custom_image(const RES &p_cursor, CursorShape p_shape, const Vector2 &p_hotspot);
+
+	virtual LatinKeyboardVariant get_latin_keyboard_variant() const;
+
+	virtual void process_events();
+
+	virtual void release_rendering_thread();
+	virtual void make_rendering_thread();
+	virtual void swap_buffers();
+
+	virtual void set_context(Context p_context);
+
+	virtual void set_native_icon(const String &p_filename);
+	virtual void set_icon(const Ref<Image> &p_icon);
+
+	static DisplayServer *create_func(const String &p_rendering_driver, WindowMode p_mode, uint32_t p_flags, const Vector2i &p_resolution, Error &r_error);
+	static Vector<String> get_rendering_drivers_func();
+
+	static void register_x11_driver();
+
+	DisplayServerX11(const String &p_rendering_driver, WindowMode p_mode, uint32_t p_flags, const Vector2i &p_resolution, Error &r_error);
+	~DisplayServerX11();
+};
+
+#endif // X11 enabled
+
+#endif // DISPLAY_SERVER_X11_H

platform/linuxbsd/export/export.cpp

@@ -0,0 +1,169 @@
+/*************************************************************************/
+/*  export.cpp                                                           */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "export.h"
+
+#include "core/os/file_access.h"
+#include "editor/editor_export.h"
+#include "platform/linuxbsd/logo.gen.h"
+#include "scene/resources/texture.h"
+
+static Error fixup_embedded_pck(const String &p_path, int64_t p_embedded_start, int64_t p_embedded_size);
+
+void register_linuxbsd_exporter() {
+
+	Ref<EditorExportPlatformPC> platform;
+	platform.instance();
+
+	Ref<Image> img = memnew(Image(_linuxbsd_logo));
+	Ref<ImageTexture> logo;
+	logo.instance();
+	logo->create_from_image(img);
+	platform->set_logo(logo);
+	platform->set_name("Linux/X11");
+	platform->set_extension("x86");
+	platform->set_extension("x86_64", "binary_format/64_bits");
+	platform->set_release_32("linux_x11_32_release");
+	platform->set_debug_32("linux_x11_32_debug");
+	platform->set_release_64("linux_x11_64_release");
+	platform->set_debug_64("linux_x11_64_debug");
+	platform->set_os_name("X11");
+	platform->set_chmod_flags(0755);
+	platform->set_fixup_embedded_pck_func(&fixup_embedded_pck);
+
+	EditorExport::get_singleton()->add_export_platform(platform);
+}
+
+static Error fixup_embedded_pck(const String &p_path, int64_t p_embedded_start, int64_t p_embedded_size) {
+
+	// Patch the header of the "pck" section in the ELF file so that it corresponds to the embedded data
+
+	FileAccess *f = FileAccess::open(p_path, FileAccess::READ_WRITE);
+	if (!f) {
+		return ERR_CANT_OPEN;
+	}
+
+	// Read and check ELF magic number
+	{
+		uint32_t magic = f->get_32();
+		if (magic != 0x464c457f) { // 0x7F + "ELF"
+			f->close();
+			return ERR_FILE_CORRUPT;
+		}
+	}
+
+	// Read program architecture bits from class field
+
+	int bits = f->get_8() * 32;
+
+	if (bits == 32 && p_embedded_size >= 0x100000000) {
+		f->close();
+		ERR_FAIL_V_MSG(ERR_INVALID_DATA, "32-bit executables cannot have embedded data >= 4 GiB.");
+	}
+
+	// Get info about the section header table
+
+	int64_t section_table_pos;
+	int64_t section_header_size;
+	if (bits == 32) {
+		section_header_size = 40;
+		f->seek(0x20);
+		section_table_pos = f->get_32();
+		f->seek(0x30);
+	} else { // 64
+		section_header_size = 64;
+		f->seek(0x28);
+		section_table_pos = f->get_64();
+		f->seek(0x3c);
+	}
+	int num_sections = f->get_16();
+	int string_section_idx = f->get_16();
+
+	// Load the strings table
+	uint8_t *strings;
+	{
+		// Jump to the strings section header
+		f->seek(section_table_pos + string_section_idx * section_header_size);
+
+		// Read strings data size and offset
+		int64_t string_data_pos;
+		int64_t string_data_size;
+		if (bits == 32) {
+			f->seek(f->get_position() + 0x10);
+			string_data_pos = f->get_32();
+			string_data_size = f->get_32();
+		} else { // 64
+			f->seek(f->get_position() + 0x18);
+			string_data_pos = f->get_64();
+			string_data_size = f->get_64();
+		}
+
+		// Read strings data
+		f->seek(string_data_pos);
+		strings = (uint8_t *)memalloc(string_data_size);
+		if (!strings) {
+			f->close();
+			return ERR_OUT_OF_MEMORY;
+		}
+		f->get_buffer(strings, string_data_size);
+	}
+
+	// Search for the "pck" section
+
+	bool found = false;
+	for (int i = 0; i < num_sections; ++i) {
+
+		int64_t section_header_pos = section_table_pos + i * section_header_size;
+		f->seek(section_header_pos);
+
+		uint32_t name_offset = f->get_32();
+		if (strcmp((char *)strings + name_offset, "pck") == 0) {
+			// "pck" section found, let's patch!
+
+			if (bits == 32) {
+				f->seek(section_header_pos + 0x10);
+				f->store_32(p_embedded_start);
+				f->store_32(p_embedded_size);
+			} else { // 64
+				f->seek(section_header_pos + 0x18);
+				f->store_64(p_embedded_start);
+				f->store_64(p_embedded_size);
+			}
+
+			found = true;
+			break;
+		}
+	}
+
+	memfree(strings);
+	f->close();
+
+	return found ? OK : ERR_FILE_CORRUPT;
+}

platform/linuxbsd/export/export.h

@@ -0,0 +1,36 @@
+/*************************************************************************/
+/*  export.h                                                             */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef LINUXBSD_EXPORT_H
+#define LINUXBSD_EXPORT_H
+
+void register_linuxbsd_exporter();
+
+#endif // LINUXBSD_EXPORT_H

platform/linuxbsd/godot_linuxbsd.cpp

@@ -0,0 +1,67 @@
+/*************************************************************************/
+/*  godot_linuxbsd.cpp                                                   */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include <limits.h>
+#include <locale.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "main/main.h"
+#include "os_linuxbsd.h"
+
+int main(int argc, char *argv[]) {
+
+	OS_LinuxBSD os;
+
+	setlocale(LC_CTYPE, "");
+
+	char *cwd = (char *)malloc(PATH_MAX);
+	ERR_FAIL_COND_V(!cwd, ERR_OUT_OF_MEMORY);
+	char *ret = getcwd(cwd, PATH_MAX);
+
+	Error err = Main::setup(argv[0], argc - 1, &argv[1]);
+	if (err != OK) {
+		free(cwd);
+		return 255;
+	}
+
+	if (Main::start())
+		os.run(); // it is actually the OS that decides how to run
+	Main::cleanup();
+
+	if (ret) { // Previous getcwd was successful
+		if (chdir(cwd) != 0) {
+			ERR_PRINT("Couldn't return to previous working directory.");
+		}
+	}
+	free(cwd);
+
+	return os.get_exit_code();
+}

platform/linuxbsd/joypad_linux.cpp

@@ -0,0 +1,554 @@
+/*************************************************************************/
+/*  joypad_linux.cpp                                                     */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifdef JOYDEV_ENABLED
+
+#include "joypad_linux.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <linux/input.h>
+#include <unistd.h>
+
+#ifdef UDEV_ENABLED
+#include <libudev.h>
+#endif
+
+#define LONG_BITS (sizeof(long) * 8)
+#define test_bit(nr, addr) (((1UL << ((nr) % LONG_BITS)) & ((addr)[(nr) / LONG_BITS])) != 0)
+#define NBITS(x) ((((x)-1) / LONG_BITS) + 1)
+
+#ifdef UDEV_ENABLED
+static const char *ignore_str = "/dev/input/js";
+#endif
+
+JoypadLinux::Joypad::Joypad() {
+	fd = -1;
+	dpad = 0;
+	devpath = "";
+	for (int i = 0; i < MAX_ABS; i++) {
+		abs_info[i] = NULL;
+	}
+}
+
+JoypadLinux::Joypad::~Joypad() {
+
+	for (int i = 0; i < MAX_ABS; i++) {
+		if (abs_info[i]) {
+			memdelete(abs_info[i]);
+		}
+	}
+}
+
+void JoypadLinux::Joypad::reset() {
+	dpad = 0;
+	fd = -1;
+
+	Input::JoyAxis jx;
+	jx.min = -1;
+	jx.value = 0.0f;
+	for (int i = 0; i < MAX_ABS; i++) {
+		abs_map[i] = -1;
+		curr_axis[i] = jx;
+	}
+}
+
+JoypadLinux::JoypadLinux(Input *in) {
+	exit_udev = false;
+	input = in;
+	joy_thread = Thread::create(joy_thread_func, this);
+}
+
+JoypadLinux::~JoypadLinux() {
+	exit_udev = true;
+	Thread::wait_to_finish(joy_thread);
+	memdelete(joy_thread);
+	close_joypad();
+}
+
+void JoypadLinux::joy_thread_func(void *p_user) {
+
+	if (p_user) {
+		JoypadLinux *joy = (JoypadLinux *)p_user;
+		joy->run_joypad_thread();
+	}
+}
+
+void JoypadLinux::run_joypad_thread() {
+#ifdef UDEV_ENABLED
+	udev *_udev = udev_new();
+	ERR_FAIL_COND(!_udev);
+	enumerate_joypads(_udev);
+	monitor_joypads(_udev);
+	udev_unref(_udev);
+#else
+	monitor_joypads();
+#endif
+}
+
+#ifdef UDEV_ENABLED
+void JoypadLinux::enumerate_joypads(udev *p_udev) {
+
+	udev_enumerate *enumerate;
+	udev_list_entry *devices, *dev_list_entry;
+	udev_device *dev;
+
+	enumerate = udev_enumerate_new(p_udev);
+	udev_enumerate_add_match_subsystem(enumerate, "input");
+
+	udev_enumerate_scan_devices(enumerate);
+	devices = udev_enumerate_get_list_entry(enumerate);
+	udev_list_entry_foreach(dev_list_entry, devices) {
+
+		const char *path = udev_list_entry_get_name(dev_list_entry);
+		dev = udev_device_new_from_syspath(p_udev, path);
+		const char *devnode = udev_device_get_devnode(dev);
+
+		if (devnode) {
+
+			String devnode_str = devnode;
+			if (devnode_str.find(ignore_str) == -1) {
+				MutexLock lock(joy_mutex);
+				open_joypad(devnode);
+			}
+		}
+		udev_device_unref(dev);
+	}
+	udev_enumerate_unref(enumerate);
+}
+
+void JoypadLinux::monitor_joypads(udev *p_udev) {
+
+	udev_device *dev = NULL;
+	udev_monitor *mon = udev_monitor_new_from_netlink(p_udev, "udev");
+	udev_monitor_filter_add_match_subsystem_devtype(mon, "input", NULL);
+	udev_monitor_enable_receiving(mon);
+	int fd = udev_monitor_get_fd(mon);
+
+	while (!exit_udev) {
+
+		fd_set fds;
+		struct timeval tv;
+		int ret;
+
+		FD_ZERO(&fds);
+		FD_SET(fd, &fds);
+		tv.tv_sec = 0;
+		tv.tv_usec = 0;
+
+		ret = select(fd + 1, &fds, NULL, NULL, &tv);
+
+		/* Check if our file descriptor has received data. */
+		if (ret > 0 && FD_ISSET(fd, &fds)) {
+			/* Make the call to receive the device.
+			   select() ensured that this will not block. */
+			dev = udev_monitor_receive_device(mon);
+
+			if (dev && udev_device_get_devnode(dev) != 0) {
+
+				MutexLock lock(joy_mutex);
+				String action = udev_device_get_action(dev);
+				const char *devnode = udev_device_get_devnode(dev);
+				if (devnode) {
+
+					String devnode_str = devnode;
+					if (devnode_str.find(ignore_str) == -1) {
+
+						if (action == "add")
+							open_joypad(devnode);
+						else if (String(action) == "remove")
+							close_joypad(get_joy_from_path(devnode));
+					}
+				}
+
+				udev_device_unref(dev);
+			}
+		}
+		usleep(50000);
+	}
+	udev_monitor_unref(mon);
+}
+#endif
+
+void JoypadLinux::monitor_joypads() {
+
+	while (!exit_udev) {
+		{
+			MutexLock lock(joy_mutex);
+
+			for (int i = 0; i < 32; i++) {
+				char fname[64];
+				sprintf(fname, "/dev/input/event%d", i);
+				if (attached_devices.find(fname) == -1) {
+					open_joypad(fname);
+				}
+			}
+		}
+		usleep(1000000); // 1s
+	}
+}
+
+int JoypadLinux::get_joy_from_path(String p_path) const {
+
+	for (int i = 0; i < JOYPADS_MAX; i++) {
+
+		if (joypads[i].devpath == p_path) {
+			return i;
+		}
+	}
+	return -2;
+}
+
+void JoypadLinux::close_joypad(int p_id) {
+	if (p_id == -1) {
+		for (int i = 0; i < JOYPADS_MAX; i++) {
+
+			close_joypad(i);
+		};
+		return;
+	} else if (p_id < 0)
+		return;
+
+	Joypad &joy = joypads[p_id];
+
+	if (joy.fd != -1) {
+
+		close(joy.fd);
+		joy.fd = -1;
+		attached_devices.remove(attached_devices.find(joy.devpath));
+		input->joy_connection_changed(p_id, false, "");
+	};
+}
+
+static String _hex_str(uint8_t p_byte) {
+
+	static const char *dict = "0123456789abcdef";
+	char ret[3];
+	ret[2] = 0;
+
+	ret[0] = dict[p_byte >> 4];
+	ret[1] = dict[p_byte & 0xF];
+
+	return ret;
+}
+
+void JoypadLinux::setup_joypad_properties(int p_id) {
+
+	Joypad *joy = &joypads[p_id];
+
+	unsigned long keybit[NBITS(KEY_MAX)] = { 0 };
+	unsigned long absbit[NBITS(ABS_MAX)] = { 0 };
+
+	int num_buttons = 0;
+	int num_axes = 0;
+
+	if ((ioctl(joy->fd, EVIOCGBIT(EV_KEY, sizeof(keybit)), keybit) < 0) ||
+			(ioctl(joy->fd, EVIOCGBIT(EV_ABS, sizeof(absbit)), absbit) < 0)) {
+		return;
+	}
+	for (int i = BTN_JOYSTICK; i < KEY_MAX; ++i) {
+
+		if (test_bit(i, keybit)) {
+
+			joy->key_map[i] = num_buttons++;
+		}
+	}
+	for (int i = BTN_MISC; i < BTN_JOYSTICK; ++i) {
+
+		if (test_bit(i, keybit)) {
+
+			joy->key_map[i] = num_buttons++;
+		}
+	}
+	for (int i = 0; i < ABS_MISC; ++i) {
+		/* Skip hats */
+		if (i == ABS_HAT0X) {
+			i = ABS_HAT3Y;
+			continue;
+		}
+		if (test_bit(i, absbit)) {
+
+			joy->abs_map[i] = num_axes++;
+			joy->abs_info[i] = memnew(input_absinfo);
+			if (ioctl(joy->fd, EVIOCGABS(i), joy->abs_info[i]) < 0) {
+				memdelete(joy->abs_info[i]);
+				joy->abs_info[i] = NULL;
+			}
+		}
+	}
+
+	joy->force_feedback = false;
+	joy->ff_effect_timestamp = 0;
+	unsigned long ffbit[NBITS(FF_CNT)];
+	if (ioctl(joy->fd, EVIOCGBIT(EV_FF, sizeof(ffbit)), ffbit) != -1) {
+		if (test_bit(FF_RUMBLE, ffbit)) {
+			joy->force_feedback = true;
+		}
+	}
+}
+
+void JoypadLinux::open_joypad(const char *p_path) {
+
+	int joy_num = input->get_unused_joy_id();
+	int fd = open(p_path, O_RDWR | O_NONBLOCK);
+	if (fd != -1 && joy_num != -1) {
+
+		unsigned long evbit[NBITS(EV_MAX)] = { 0 };
+		unsigned long keybit[NBITS(KEY_MAX)] = { 0 };
+		unsigned long absbit[NBITS(ABS_MAX)] = { 0 };
+
+		// add to attached devices so we don't try to open it again
+		attached_devices.push_back(String(p_path));
+
+		if ((ioctl(fd, EVIOCGBIT(0, sizeof(evbit)), evbit) < 0) ||
+				(ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybit)), keybit) < 0) ||
+				(ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbit)), absbit) < 0)) {
+			close(fd);
+			return;
+		}
+
+		//check if the device supports basic gamepad events, prevents certain keyboards from
+		//being detected as joypads
+		if (!(test_bit(EV_KEY, evbit) && test_bit(EV_ABS, evbit) &&
+					(test_bit(ABS_X, absbit) || test_bit(ABS_Y, absbit) || test_bit(ABS_HAT0X, absbit) ||
+							test_bit(ABS_GAS, absbit) || test_bit(ABS_RUDDER, absbit)) &&
+					(test_bit(BTN_A, keybit) || test_bit(BTN_THUMBL, keybit) ||
+							test_bit(BTN_TRIGGER, keybit) || test_bit(BTN_1, keybit))) &&
+				!(test_bit(EV_ABS, evbit) &&
+						test_bit(ABS_X, absbit) && test_bit(ABS_Y, absbit) &&
+						test_bit(ABS_RX, absbit) && test_bit(ABS_RY, absbit))) {
+			close(fd);
+			return;
+		}
+
+		char uid[128];
+		char namebuf[128];
+		String name = "";
+		input_id inpid;
+		if (ioctl(fd, EVIOCGNAME(sizeof(namebuf)), namebuf) >= 0) {
+			name = namebuf;
+		}
+
+		if (ioctl(fd, EVIOCGID, &inpid) < 0) {
+			close(fd);
+			return;
+		}
+
+		joypads[joy_num].reset();
+
+		Joypad &joy = joypads[joy_num];
+		joy.fd = fd;
+		joy.devpath = String(p_path);
+		setup_joypad_properties(joy_num);
+		sprintf(uid, "%04x%04x", BSWAP16(inpid.bustype), 0);
+		if (inpid.vendor && inpid.product && inpid.version) {
+
+			uint16_t vendor = BSWAP16(inpid.vendor);
+			uint16_t product = BSWAP16(inpid.product);
+			uint16_t version = BSWAP16(inpid.version);
+
+			sprintf(uid + String(uid).length(), "%04x%04x%04x%04x%04x%04x", vendor, 0, product, 0, version, 0);
+			input->joy_connection_changed(joy_num, true, name, uid);
+		} else {
+			String uidname = uid;
+			int uidlen = MIN(name.length(), 11);
+			for (int i = 0; i < uidlen; i++) {
+
+				uidname = uidname + _hex_str(name[i]);
+			}
+			uidname += "00";
+			input->joy_connection_changed(joy_num, true, name, uidname);
+		}
+	}
+}
+
+void JoypadLinux::joypad_vibration_start(int p_id, float p_weak_magnitude, float p_strong_magnitude, float p_duration, uint64_t p_timestamp) {
+	Joypad &joy = joypads[p_id];
+	if (!joy.force_feedback || joy.fd == -1 || p_weak_magnitude < 0.f || p_weak_magnitude > 1.f || p_strong_magnitude < 0.f || p_strong_magnitude > 1.f) {
+		return;
+	}
+	if (joy.ff_effect_id != -1) {
+		joypad_vibration_stop(p_id, p_timestamp);
+	}
+
+	struct ff_effect effect;
+	effect.type = FF_RUMBLE;
+	effect.id = -1;
+	effect.u.rumble.weak_magnitude = floor(p_weak_magnitude * (float)0xffff);
+	effect.u.rumble.strong_magnitude = floor(p_strong_magnitude * (float)0xffff);
+	effect.replay.length = floor(p_duration * 1000);
+	effect.replay.delay = 0;
+
+	if (ioctl(joy.fd, EVIOCSFF, &effect) < 0) {
+		return;
+	}
+
+	struct input_event play;
+	play.type = EV_FF;
+	play.code = effect.id;
+	play.value = 1;
+	if (write(joy.fd, (const void *)&play, sizeof(play)) == -1) {
+		print_verbose("Couldn't write to Joypad device.");
+	}
+
+	joy.ff_effect_id = effect.id;
+	joy.ff_effect_timestamp = p_timestamp;
+}
+
+void JoypadLinux::joypad_vibration_stop(int p_id, uint64_t p_timestamp) {
+	Joypad &joy = joypads[p_id];
+	if (!joy.force_feedback || joy.fd == -1 || joy.ff_effect_id == -1) {
+		return;
+	}
+
+	if (ioctl(joy.fd, EVIOCRMFF, joy.ff_effect_id) < 0) {
+		return;
+	}
+
+	joy.ff_effect_id = -1;
+	joy.ff_effect_timestamp = p_timestamp;
+}
+
+Input::JoyAxis JoypadLinux::axis_correct(const input_absinfo *p_abs, int p_value) const {
+
+	int min = p_abs->minimum;
+	int max = p_abs->maximum;
+	Input::JoyAxis jx;
+
+	if (min < 0) {
+		jx.min = -1;
+		if (p_value < 0) {
+			jx.value = (float)-p_value / min;
+		} else {
+			jx.value = (float)p_value / max;
+		}
+	} else if (min == 0) {
+		jx.min = 0;
+		jx.value = 0.0f + (float)p_value / max;
+	}
+	return jx;
+}
+
+void JoypadLinux::process_joypads() {
+
+	if (joy_mutex.try_lock() != OK) {
+		return;
+	}
+	for (int i = 0; i < JOYPADS_MAX; i++) {
+
+		if (joypads[i].fd == -1) continue;
+
+		input_event events[32];
+		Joypad *joy = &joypads[i];
+
+		int len;
+
+		while ((len = read(joy->fd, events, (sizeof events))) > 0) {
+			len /= sizeof(events[0]);
+			for (int j = 0; j < len; j++) {
+
+				input_event &ev = events[j];
+
+				// ev may be tainted and out of MAX_KEY range, which will cause
+				// joy->key_map[ev.code] to crash
+				if (ev.code >= MAX_KEY)
+					return;
+
+				switch (ev.type) {
+					case EV_KEY:
+						input->joy_button(i, joy->key_map[ev.code], ev.value);
+						break;
+
+					case EV_ABS:
+
+						switch (ev.code) {
+							case ABS_HAT0X:
+								if (ev.value != 0) {
+									if (ev.value < 0)
+										joy->dpad |= Input::HAT_MASK_LEFT;
+									else
+										joy->dpad |= Input::HAT_MASK_RIGHT;
+								} else
+									joy->dpad &= ~(Input::HAT_MASK_LEFT | Input::HAT_MASK_RIGHT);
+
+								input->joy_hat(i, joy->dpad);
+								break;
+
+							case ABS_HAT0Y:
+								if (ev.value != 0) {
+									if (ev.value < 0)
+										joy->dpad |= Input::HAT_MASK_UP;
+									else
+										joy->dpad |= Input::HAT_MASK_DOWN;
+								} else
+									joy->dpad &= ~(Input::HAT_MASK_UP | Input::HAT_MASK_DOWN);
+
+								input->joy_hat(i, joy->dpad);
+								break;
+
+							default:
+								if (ev.code >= MAX_ABS)
+									return;
+								if (joy->abs_map[ev.code] != -1 && joy->abs_info[ev.code]) {
+									Input::JoyAxis value = axis_correct(joy->abs_info[ev.code], ev.value);
+									joy->curr_axis[joy->abs_map[ev.code]] = value;
+								}
+								break;
+						}
+						break;
+				}
+			}
+		}
+		for (int j = 0; j < MAX_ABS; j++) {
+			int index = joy->abs_map[j];
+			if (index != -1) {
+				input->joy_axis(i, index, joy->curr_axis[index]);
+			}
+		}
+		if (len == 0 || (len < 0 && errno != EAGAIN)) {
+			close_joypad(i);
+		};
+
+		if (joy->force_feedback) {
+			uint64_t timestamp = input->get_joy_vibration_timestamp(i);
+			if (timestamp > joy->ff_effect_timestamp) {
+				Vector2 strength = input->get_joy_vibration_strength(i);
+				float duration = input->get_joy_vibration_duration(i);
+				if (strength.x == 0 && strength.y == 0) {
+					joypad_vibration_stop(i, timestamp);
+				} else {
+					joypad_vibration_start(i, strength.x, strength.y, duration, timestamp);
+				}
+			}
+		}
+	}
+	joy_mutex.unlock();
+}
+#endif

platform/linuxbsd/joypad_linux.h

@@ -0,0 +1,102 @@
+/*************************************************************************/
+/*  joypad_linux.h                                                       */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+//author: Andreas Haas <hondres,  liugam3@gmail.com>
+#ifndef JOYPAD_LINUX_H
+#define JOYPAD_LINUX_H
+
+#ifdef JOYDEV_ENABLED
+#include "core/input/input.h"
+#include "core/os/mutex.h"
+#include "core/os/thread.h"
+
+struct input_absinfo;
+
+class JoypadLinux {
+public:
+	JoypadLinux(Input *in);
+	~JoypadLinux();
+	void process_joypads();
+
+private:
+	enum {
+		JOYPADS_MAX = 16,
+		MAX_ABS = 63,
+		MAX_KEY = 767, // Hack because <linux/input.h> can't be included here
+	};
+
+	struct Joypad {
+		Input::JoyAxis curr_axis[MAX_ABS];
+		int key_map[MAX_KEY];
+		int abs_map[MAX_ABS];
+		int dpad;
+		int fd;
+
+		String devpath;
+		input_absinfo *abs_info[MAX_ABS];
+
+		bool force_feedback;
+		int ff_effect_id;
+		uint64_t ff_effect_timestamp;
+
+		Joypad();
+		~Joypad();
+		void reset();
+	};
+
+	bool exit_udev;
+	Mutex joy_mutex;
+	Thread *joy_thread;
+	Input *input;
+	Joypad joypads[JOYPADS_MAX];
+	Vector<String> attached_devices;
+
+	static void joy_thread_func(void *p_user);
+
+	int get_joy_from_path(String p_path) const;
+
+	void setup_joypad_properties(int p_id);
+	void close_joypad(int p_id = -1);
+#ifdef UDEV_ENABLED
+	void enumerate_joypads(struct udev *p_udev);
+	void monitor_joypads(struct udev *p_udev);
+#endif
+	void monitor_joypads();
+	void run_joypad_thread();
+	void open_joypad(const char *p_path);
+
+	void joypad_vibration_start(int p_id, float p_weak_magnitude, float p_strong_magnitude, float p_duration, uint64_t p_timestamp);
+	void joypad_vibration_stop(int p_id, uint64_t p_timestamp);
+
+	Input::JoyAxis axis_correct(const input_absinfo *p_abs, int p_value) const;
+};
+
+#endif
+#endif // JOYPAD_LINUX_H

platform/linuxbsd/key_mapping_x11.h

@@ -0,0 +1,54 @@
+/*************************************************************************/
+/*  key_mapping_x11.h                                                    */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef KEY_MAPPING_X11_H
+#define KEY_MAPPING_X11_H
+
+#include <X11/XF86keysym.h>
+#include <X11/Xlib.h>
+#define XK_MISCELLANY
+#define XK_LATIN1
+#define XK_XKB_KEYS
+#include <X11/keysymdef.h>
+
+#include "core/os/keyboard.h"
+
+class KeyMappingX11 {
+	KeyMappingX11(){};
+
+public:
+	static unsigned int get_keycode(KeySym p_keysym);
+	static unsigned int get_scancode(unsigned int p_code);
+	static KeySym get_keysym(unsigned int p_code);
+	static unsigned int get_unicode_from_keysym(KeySym p_keysym);
+	static KeySym get_keysym_from_unicode(unsigned int p_unicode);
+};
+
+#endif

platform/linuxbsd/os_linuxbsd.cpp

@@ -0,0 +1,381 @@
+/*************************************************************************/
+/*  os_linuxbsd.cpp                                                      */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "os_linuxbsd.h"
+
+#include "core/os/dir_access.h"
+#include "core/print_string.h"
+#include "errno.h"
+
+#ifdef HAVE_MNTENT
+#include <mntent.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <dlfcn.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "main/main.h"
+
+#ifdef X11_ENABLED
+#include "display_server_x11.h"
+#endif
+
+void OS_LinuxBSD::initialize() {
+
+	crash_handler.initialize();
+
+	OS_Unix::initialize_core();
+}
+
+void OS_LinuxBSD::initialize_joypads() {
+
+#ifdef JOYDEV_ENABLED
+	joypad = memnew(JoypadLinux(Input::get_singleton()));
+#endif
+}
+
+String OS_LinuxBSD::get_unique_id() const {
+
+	static String machine_id;
+	if (machine_id.empty()) {
+		if (FileAccess *f = FileAccess::open("/etc/machine-id", FileAccess::READ)) {
+			while (machine_id.empty() && !f->eof_reached()) {
+				machine_id = f->get_line().strip_edges();
+			}
+			f->close();
+			memdelete(f);
+		}
+	}
+	return machine_id;
+}
+
+void OS_LinuxBSD::finalize() {
+
+	if (main_loop)
+		memdelete(main_loop);
+	main_loop = NULL;
+
+#ifdef ALSAMIDI_ENABLED
+	driver_alsamidi.close();
+#endif
+
+#ifdef JOYDEV_ENABLED
+	memdelete(joypad);
+#endif
+}
+
+MainLoop *OS_LinuxBSD::get_main_loop() const {
+
+	return main_loop;
+}
+
+void OS_LinuxBSD::delete_main_loop() {
+
+	if (main_loop)
+		memdelete(main_loop);
+	main_loop = NULL;
+}
+
+void OS_LinuxBSD::set_main_loop(MainLoop *p_main_loop) {
+
+	main_loop = p_main_loop;
+}
+
+String OS_LinuxBSD::get_name() const {
+
+#ifdef __linux__
+	return "Linux";
+#elif defined(__FreeBSD__)
+	return "FreeBSD";
+#elif defined(__NetBSD__)
+	return "NetBSD";
+#else
+	return "BSD";
+#endif
+}
+
+Error OS_LinuxBSD::shell_open(String p_uri) {
+
+	Error ok;
+	List<String> args;
+	args.push_back(p_uri);
+	ok = execute("xdg-open", args, false);
+	if (ok == OK)
+		return OK;
+	ok = execute("gnome-open", args, false);
+	if (ok == OK)
+		return OK;
+	ok = execute("kde-open", args, false);
+	return ok;
+}
+
+bool OS_LinuxBSD::_check_internal_feature_support(const String &p_feature) {
+
+	return p_feature == "pc";
+}
+
+String OS_LinuxBSD::get_config_path() const {
+
+	if (has_environment("XDG_CONFIG_HOME")) {
+		return get_environment("XDG_CONFIG_HOME");
+	} else if (has_environment("HOME")) {
+		return get_environment("HOME").plus_file(".config");
+	} else {
+		return ".";
+	}
+}
+
+String OS_LinuxBSD::get_data_path() const {
+
+	if (has_environment("XDG_DATA_HOME")) {
+		return get_environment("XDG_DATA_HOME");
+	} else if (has_environment("HOME")) {
+		return get_environment("HOME").plus_file(".local/share");
+	} else {
+		return get_config_path();
+	}
+}
+
+String OS_LinuxBSD::get_cache_path() const {
+
+	if (has_environment("XDG_CACHE_HOME")) {
+		return get_environment("XDG_CACHE_HOME");
+	} else if (has_environment("HOME")) {
+		return get_environment("HOME").plus_file(".cache");
+	} else {
+		return get_config_path();
+	}
+}
+
+String OS_LinuxBSD::get_system_dir(SystemDir p_dir) const {
+
+	String xdgparam;
+
+	switch (p_dir) {
+		case SYSTEM_DIR_DESKTOP: {
+
+			xdgparam = "DESKTOP";
+		} break;
+		case SYSTEM_DIR_DCIM: {
+
+			xdgparam = "PICTURES";
+
+		} break;
+		case SYSTEM_DIR_DOCUMENTS: {
+
+			xdgparam = "DOCUMENTS";
+
+		} break;
+		case SYSTEM_DIR_DOWNLOADS: {
+
+			xdgparam = "DOWNLOAD";
+
+		} break;
+		case SYSTEM_DIR_MOVIES: {
+
+			xdgparam = "VIDEOS";
+
+		} break;
+		case SYSTEM_DIR_MUSIC: {
+
+			xdgparam = "MUSIC";
+
+		} break;
+		case SYSTEM_DIR_PICTURES: {
+
+			xdgparam = "PICTURES";
+
+		} break;
+		case SYSTEM_DIR_RINGTONES: {
+
+			xdgparam = "MUSIC";
+
+		} break;
+	}
+
+	String pipe;
+	List<String> arg;
+	arg.push_back(xdgparam);
+	Error err = const_cast<OS_LinuxBSD *>(this)->execute("xdg-user-dir", arg, true, NULL, &pipe);
+	if (err != OK)
+		return ".";
+	return pipe.strip_edges();
+}
+
+void OS_LinuxBSD::run() {
+
+	force_quit = false;
+
+	if (!main_loop)
+		return;
+
+	main_loop->init();
+
+	//uint64_t last_ticks=get_ticks_usec();
+
+	//int frames=0;
+	//uint64_t frame=0;
+
+	while (!force_quit) {
+
+		DisplayServer::get_singleton()->process_events(); // get rid of pending events
+#ifdef JOYDEV_ENABLED
+		joypad->process_joypads();
+#endif
+		if (Main::iteration())
+			break;
+	};
+
+	main_loop->finish();
+}
+
+void OS_LinuxBSD::disable_crash_handler() {
+	crash_handler.disable();
+}
+
+bool OS_LinuxBSD::is_disable_crash_handler() const {
+	return crash_handler.is_disabled();
+}
+
+static String get_mountpoint(const String &p_path) {
+	struct stat s;
+	if (stat(p_path.utf8().get_data(), &s)) {
+		return "";
+	}
+
+#ifdef HAVE_MNTENT
+	dev_t dev = s.st_dev;
+	FILE *fd = setmntent("/proc/mounts", "r");
+	if (!fd) {
+		return "";
+	}
+
+	struct mntent mnt;
+	char buf[1024];
+	size_t buflen = 1024;
+	while (getmntent_r(fd, &mnt, buf, buflen)) {
+		if (!stat(mnt.mnt_dir, &s) && s.st_dev == dev) {
+			endmntent(fd);
+			return String(mnt.mnt_dir);
+		}
+	}
+
+	endmntent(fd);
+#endif
+	return "";
+}
+
+Error OS_LinuxBSD::move_to_trash(const String &p_path) {
+	String trash_can = "";
+	String mnt = get_mountpoint(p_path);
+
+	// If there is a directory "[Mountpoint]/.Trash-[UID]/files", use it as the trash can.
+	if (mnt != "") {
+		String path(mnt + "/.Trash-" + itos(getuid()) + "/files");
+		struct stat s;
+		if (!stat(path.utf8().get_data(), &s)) {
+			trash_can = path;
+		}
+	}
+
+	// Otherwise, if ${XDG_DATA_HOME} is defined, use "${XDG_DATA_HOME}/Trash/files" as the trash can.
+	if (trash_can == "") {
+		char *dhome = getenv("XDG_DATA_HOME");
+		if (dhome) {
+			trash_can = String(dhome) + "/Trash/files";
+		}
+	}
+
+	// Otherwise, if ${HOME} is defined, use "${HOME}/.local/share/Trash/files" as the trash can.
+	if (trash_can == "") {
+		char *home = getenv("HOME");
+		if (home) {
+			trash_can = String(home) + "/.local/share/Trash/files";
+		}
+	}
+
+	// Issue an error if none of the previous locations is appropriate for the trash can.
+	if (trash_can == "") {
+		ERR_PRINT("move_to_trash: Could not determine the trash can location");
+		return FAILED;
+	}
+
+	// Create needed directories for decided trash can location.
+	DirAccess *dir_access = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
+	Error err = dir_access->make_dir_recursive(trash_can);
+	memdelete(dir_access);
+
+	// Issue an error if trash can is not created proprely.
+	if (err != OK) {
+		ERR_PRINT("move_to_trash: Could not create the trash can \"" + trash_can + "\"");
+		return err;
+	}
+
+	// The trash can is successfully created, now move the given resource to it.
+	// Do not use DirAccess:rename() because it can't move files across multiple mountpoints.
+	List<String> mv_args;
+	mv_args.push_back(p_path);
+	mv_args.push_back(trash_can);
+	int retval;
+	err = execute("mv", mv_args, true, NULL, NULL, &retval);
+
+	// Issue an error if "mv" failed to move the given resource to the trash can.
+	if (err != OK || retval != 0) {
+		ERR_PRINT("move_to_trash: Could not move the resource \"" + p_path + "\" to the trash can \"" + trash_can + "\"");
+		return FAILED;
+	}
+
+	return OK;
+}
+
+OS_LinuxBSD::OS_LinuxBSD() {
+
+	main_loop = NULL;
+	force_quit = false;
+
+#ifdef PULSEAUDIO_ENABLED
+	AudioDriverManager::add_driver(&driver_pulseaudio);
+#endif
+
+#ifdef ALSA_ENABLED
+	AudioDriverManager::add_driver(&driver_alsa);
+#endif
+
+#ifdef X11_ENABLED
+	DisplayServerX11::register_x11_driver();
+#endif
+}

platform/linuxbsd/os_linuxbsd.h

@@ -0,0 +1,106 @@
+/*************************************************************************/
+/*  os_linuxbsd.h                                                        */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef OS_LINUXBSD_H
+#define OS_LINUXBSD_H
+
+#include "core/input/input.h"
+#include "crash_handler_linuxbsd.h"
+#include "drivers/alsa/audio_driver_alsa.h"
+#include "drivers/alsamidi/midi_driver_alsamidi.h"
+#include "drivers/pulseaudio/audio_driver_pulseaudio.h"
+#include "drivers/unix/os_unix.h"
+#include "joypad_linux.h"
+#include "servers/audio_server.h"
+#include "servers/visual/rasterizer.h"
+#include "servers/visual_server.h"
+
+class OS_LinuxBSD : public OS_Unix {
+
+	virtual void delete_main_loop();
+
+	bool force_quit;
+
+#ifdef JOYDEV_ENABLED
+	JoypadLinux *joypad;
+#endif
+
+#ifdef ALSA_ENABLED
+	AudioDriverALSA driver_alsa;
+#endif
+
+#ifdef ALSAMIDI_ENABLED
+	MIDIDriverALSAMidi driver_alsamidi;
+#endif
+
+#ifdef PULSEAUDIO_ENABLED
+	AudioDriverPulseAudio driver_pulseaudio;
+#endif
+
+	CrashHandler crash_handler;
+
+	MainLoop *main_loop;
+
+protected:
+	virtual void initialize();
+	virtual void finalize();
+
+	virtual void initialize_joypads();
+
+	virtual void set_main_loop(MainLoop *p_main_loop);
+
+public:
+	virtual String get_name() const;
+
+	virtual MainLoop *get_main_loop() const;
+
+	virtual String get_config_path() const;
+	virtual String get_data_path() const;
+	virtual String get_cache_path() const;
+
+	virtual String get_system_dir(SystemDir p_dir) const;
+
+	virtual Error shell_open(String p_uri);
+
+	virtual String get_unique_id() const;
+
+	virtual bool _check_internal_feature_support(const String &p_feature);
+
+	void run();
+
+	void disable_crash_handler();
+	bool is_disable_crash_handler() const;
+
+	virtual Error move_to_trash(const String &p_path);
+
+	OS_LinuxBSD();
+};
+
+#endif

platform/linuxbsd/pck_embed.ld

@@ -0,0 +1,10 @@
+SECTIONS
+{
+	/* Add a zero-sized section; the exporter will patch it to enclose the data appended to the executable (embedded PCK) */
+	pck 0 (INFO) :
+	{
+		/* binutils >= 2.30 allow it being zero-sized, but needs something between the braces to keep the section */
+		. = ALIGN(8);
+	}
+}
+INSERT AFTER .rodata;

platform/linuxbsd/pck_embed.legacy.ld

@@ -0,0 +1,10 @@
+SECTIONS
+{
+	/* The exporter will patch this section to enclose the data appended to the executable (embedded PCK) */
+	pck 0 (INFO) : AT ( ADDR (.rodata) + SIZEOF (.rodata) )
+	{
+		/* binutils < 2.30 need some actual content for the linker not to discard the section */
+		BYTE(0);
+	}
+}
+INSERT AFTER .rodata;

platform/linuxbsd/platform_config.h

@@ -0,0 +1,39 @@
+/*************************************************************************/
+/*  platform_config.h                                                    */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifdef __linux__
+#include <alloca.h>
+#endif
+#if defined(__FreeBSD__) || defined(__OpenBSD__)
+#include <stdlib.h>
+#define PTHREAD_BSD_SET_NAME
+#endif
+
+#define GLES2_INCLUDE_H "thirdparty/glad/glad/glad.h"

platform/linuxbsd/platform_linuxbsd_builders.py

@@ -0,0 +1,17 @@
+"""Functions used to generate source files during build time
+
+All such functions are invoked in a subprocess on Windows to prevent build flakiness.
+
+"""
+import os
+from platform_methods import subprocess_main
+
+
+def make_debug_linuxbsd(target, source, env):
+    os.system('objcopy --only-keep-debug {0} {0}.debugsymbols'.format(target[0]))
+    os.system('strip --strip-debug --strip-unneeded {0}'.format(target[0]))
+    os.system('objcopy --add-gnu-debuglink={0}.debugsymbols {0}'.format(target[0]))
+
+
+if __name__ == '__main__':
+    subprocess_main(globals())

platform/linuxbsd/vulkan_context_x11.cpp

@@ -0,0 +1,57 @@
+/*************************************************************************/
+/*  vulkan_context_x11.cpp                                               */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "vulkan_context_x11.h"
+#include <vulkan/vulkan_xlib.h>
+
+const char *VulkanContextX11::_get_platform_surface_extension() const {
+	return VK_KHR_XLIB_SURFACE_EXTENSION_NAME;
+}
+
+int VulkanContextX11::window_create(::Window p_window, Display *p_display, int p_width, int p_height) {
+
+	VkXlibSurfaceCreateInfoKHR createInfo;
+	createInfo.sType = VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR;
+	createInfo.pNext = NULL;
+	createInfo.flags = 0;
+	createInfo.dpy = p_display;
+	createInfo.window = p_window;
+
+	VkSurfaceKHR surface;
+	VkResult err = vkCreateXlibSurfaceKHR(_get_instance(), &createInfo, NULL, &surface);
+	ERR_FAIL_COND_V(err, -1);
+	return _window_create(surface, p_width, p_height);
+}
+
+VulkanContextX11::VulkanContextX11() {
+}
+
+VulkanContextX11::~VulkanContextX11() {
+}

platform/linuxbsd/vulkan_context_x11.h

@@ -0,0 +1,48 @@
+/*************************************************************************/
+/*  vulkan_context_x11.h                                                 */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef VULKAN_DEVICE_X11_H
+#define VULKAN_DEVICE_X11_H
+
+#include "drivers/vulkan/vulkan_context.h"
+#include <X11/Xlib.h>
+
+class VulkanContextX11 : public VulkanContext {
+
+	virtual const char *_get_platform_surface_extension() const;
+
+public:
+	int window_create(::Window p_window, Display *p_display, int p_width, int p_height);
+
+	VulkanContextX11();
+	~VulkanContextX11();
+};
+
+#endif // VULKAN_DEVICE_X11_H