Load GLX dynamically with GLAD

This is accomplished through the addition of a GLAD GLX loader in the
`thirdparty` directory.

This is another step towards a nice Wayland/X11 interoperation.

3 files changed, 1002 insertions, 0 deletions

diff --git a/thirdparty/README.md b/thirdparty/README.md
index 2dced503a8..f167ab5974 100644
--- a/thirdparty/README.md
+++ b/thirdparty/README.md
@@ -186,6 +186,8 @@ Files generated from [upstream web instance](https://gen.glad.sh/):
 - `KHR/khrplatform.h`
 - `gl.c`
 - `glad/gl.h`
+- `glx.c`
+- `glad/glx.h`
 
 
 ## glslang
diff --git a/thirdparty/glad/glad/glx.h b/thirdparty/glad/glad/glx.h
new file mode 100644
index 0000000000..ac115fa63b
--- /dev/null
+++ b/thirdparty/glad/glad/glx.h
@@ -0,0 +1,605 @@
+/**
+ * Loader generated by glad 2.0.2 on Tue Nov 15 09:49:49 2022
+ *
+ * SPDX-License-Identifier: (WTFPL OR CC0-1.0) AND Apache-2.0
+ *
+ * Generator: C/C++
+ * Specification: glx
+ * Extensions: 6
+ *
+ * APIs:
+ *  - glx=1.4
+ *
+ * Options:
+ *  - ALIAS = False
+ *  - DEBUG = False
+ *  - HEADER_ONLY = False
+ *  - LOADER = True
+ *  - MX = False
+ *  - ON_DEMAND = False
+ *
+ * Commandline:
+ *    --api='glx=1.4' --extensions='GLX_ARB_create_context,GLX_ARB_create_context_profile,GLX_ARB_get_proc_address,GLX_EXT_swap_control,GLX_MESA_swap_control,GLX_SGI_swap_control' c --loader
+ *
+ * Online:
+ *    http://glad.sh/#api=glx%3D1.4&extensions=GLX_ARB_create_context%2CGLX_ARB_create_context_profile%2CGLX_ARB_get_proc_address%2CGLX_EXT_swap_control%2CGLX_MESA_swap_control%2CGLX_SGI_swap_control&generator=c&options=LOADER
+ *
+ */
+
+#ifndef GLAD_GLX_H_
+#define GLAD_GLX_H_
+
+#ifdef GLX_H
+  #error GLX header already included (API: glx), remove previous include!
+#endif
+#define GLX_H 1
+
+
+#include <X11/X.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+
+#include <glad/gl.h>
+
+#define GLAD_GLX
+#define GLAD_OPTION_GLX_LOADER
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef GLAD_PLATFORM_H_
+#define GLAD_PLATFORM_H_
+
+#ifndef GLAD_PLATFORM_WIN32
+  #if defined(_WIN32) || defined(__WIN32__) || defined(WIN32) || defined(__MINGW32__)
+    #define GLAD_PLATFORM_WIN32 1
+  #else
+    #define GLAD_PLATFORM_WIN32 0
+  #endif
+#endif
+
+#ifndef GLAD_PLATFORM_APPLE
+  #ifdef __APPLE__
+    #define GLAD_PLATFORM_APPLE 1
+  #else
+    #define GLAD_PLATFORM_APPLE 0
+  #endif
+#endif
+
+#ifndef GLAD_PLATFORM_EMSCRIPTEN
+  #ifdef __EMSCRIPTEN__
+    #define GLAD_PLATFORM_EMSCRIPTEN 1
+  #else
+    #define GLAD_PLATFORM_EMSCRIPTEN 0
+  #endif
+#endif
+
+#ifndef GLAD_PLATFORM_UWP
+  #if defined(_MSC_VER) && !defined(GLAD_INTERNAL_HAVE_WINAPIFAMILY)
+    #ifdef __has_include
+      #if __has_include(<winapifamily.h>)
+        #define GLAD_INTERNAL_HAVE_WINAPIFAMILY 1
+      #endif
+    #elif _MSC_VER >= 1700 && !_USING_V110_SDK71_
+      #define GLAD_INTERNAL_HAVE_WINAPIFAMILY 1
+    #endif
+  #endif
+
+  #ifdef GLAD_INTERNAL_HAVE_WINAPIFAMILY
+    #include <winapifamily.h>
+    #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP)
+      #define GLAD_PLATFORM_UWP 1
+    #endif
+  #endif
+
+  #ifndef GLAD_PLATFORM_UWP
+    #define GLAD_PLATFORM_UWP 0
+  #endif
+#endif
+
+#ifdef __GNUC__
+  #define GLAD_GNUC_EXTENSION __extension__
+#else
+  #define GLAD_GNUC_EXTENSION
+#endif
+
+#define GLAD_UNUSED(x) (void)(x)
+
+#ifndef GLAD_API_CALL
+  #if defined(GLAD_API_CALL_EXPORT)
+    #if GLAD_PLATFORM_WIN32 || defined(__CYGWIN__)
+      #if defined(GLAD_API_CALL_EXPORT_BUILD)
+        #if defined(__GNUC__)
+          #define GLAD_API_CALL __attribute__ ((dllexport)) extern
+        #else
+          #define GLAD_API_CALL __declspec(dllexport) extern
+        #endif
+      #else
+        #if defined(__GNUC__)
+          #define GLAD_API_CALL __attribute__ ((dllimport)) extern
+        #else
+          #define GLAD_API_CALL __declspec(dllimport) extern
+        #endif
+      #endif
+    #elif defined(__GNUC__) && defined(GLAD_API_CALL_EXPORT_BUILD)
+      #define GLAD_API_CALL __attribute__ ((visibility ("default"))) extern
+    #else
+      #define GLAD_API_CALL extern
+    #endif
+  #else
+    #define GLAD_API_CALL extern
+  #endif
+#endif
+
+#ifdef APIENTRY
+  #define GLAD_API_PTR APIENTRY
+#elif GLAD_PLATFORM_WIN32
+  #define GLAD_API_PTR __stdcall
+#else
+  #define GLAD_API_PTR
+#endif
+
+#ifndef GLAPI
+#define GLAPI GLAD_API_CALL
+#endif
+
+#ifndef GLAPIENTRY
+#define GLAPIENTRY GLAD_API_PTR
+#endif
+
+#define GLAD_MAKE_VERSION(major, minor) (major * 10000 + minor)
+#define GLAD_VERSION_MAJOR(version) (version / 10000)
+#define GLAD_VERSION_MINOR(version) (version % 10000)
+
+#define GLAD_GENERATOR_VERSION "2.0.2"
+
+typedef void (*GLADapiproc)(void);
+
+typedef GLADapiproc (*GLADloadfunc)(const char *name);
+typedef GLADapiproc (*GLADuserptrloadfunc)(void *userptr, const char *name);
+
+typedef void (*GLADprecallback)(const char *name, GLADapiproc apiproc, int len_args, ...);
+typedef void (*GLADpostcallback)(void *ret, const char *name, GLADapiproc apiproc, int len_args, ...);
+
+#endif /* GLAD_PLATFORM_H_ */
+
+#define GLX_ACCUM_ALPHA_SIZE 17
+#define GLX_ACCUM_BLUE_SIZE 16
+#define GLX_ACCUM_BUFFER_BIT 0x00000080
+#define GLX_ACCUM_GREEN_SIZE 15
+#define GLX_ACCUM_RED_SIZE 14
+#define GLX_ALPHA_SIZE 11
+#define GLX_AUX_BUFFERS 7
+#define GLX_AUX_BUFFERS_BIT 0x00000010
+#define GLX_BACK_LEFT_BUFFER_BIT 0x00000004
+#define GLX_BACK_RIGHT_BUFFER_BIT 0x00000008
+#define GLX_BAD_ATTRIBUTE 2
+#define GLX_BAD_CONTEXT 5
+#define GLX_BAD_ENUM 7
+#define GLX_BAD_SCREEN 1
+#define GLX_BAD_VALUE 6
+#define GLX_BAD_VISUAL 4
+#define GLX_BLUE_SIZE 10
+#define GLX_BUFFER_SIZE 2
+#define GLX_BufferSwapComplete 1
+#define GLX_COLOR_INDEX_BIT 0x00000002
+#define GLX_COLOR_INDEX_TYPE 0x8015
+#define GLX_CONFIG_CAVEAT 0x20
+#define GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB 0x00000002
+#define GLX_CONTEXT_CORE_PROFILE_BIT_ARB 0x00000001
+#define GLX_CONTEXT_DEBUG_BIT_ARB 0x00000001
+#define GLX_CONTEXT_FLAGS_ARB 0x2094
+#define GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x00000002
+#define GLX_CONTEXT_MAJOR_VERSION_ARB 0x2091
+#define GLX_CONTEXT_MINOR_VERSION_ARB 0x2092
+#define GLX_CONTEXT_PROFILE_MASK_ARB 0x9126
+#define GLX_DAMAGED 0x8020
+#define GLX_DEPTH_BUFFER_BIT 0x00000020
+#define GLX_DEPTH_SIZE 12
+#define GLX_DIRECT_COLOR 0x8003
+#define GLX_DONT_CARE 0xFFFFFFFF
+#define GLX_DOUBLEBUFFER 5
+#define GLX_DRAWABLE_TYPE 0x8010
+#define GLX_EVENT_MASK 0x801F
+#define GLX_EXTENSIONS 0x3
+#define GLX_EXTENSION_NAME "GLX"
+#define GLX_FBCONFIG_ID 0x8013
+#define GLX_FRONT_LEFT_BUFFER_BIT 0x00000001
+#define GLX_FRONT_RIGHT_BUFFER_BIT 0x00000002
+#define GLX_GRAY_SCALE 0x8006
+#define GLX_GREEN_SIZE 9
+#define GLX_HEIGHT 0x801E
+#define GLX_LARGEST_PBUFFER 0x801C
+#define GLX_LEVEL 3
+#define GLX_MAX_PBUFFER_HEIGHT 0x8017
+#define GLX_MAX_PBUFFER_PIXELS 0x8018
+#define GLX_MAX_PBUFFER_WIDTH 0x8016
+#define GLX_MAX_SWAP_INTERVAL_EXT 0x20F2
+#define GLX_NONE 0x8000
+#define GLX_NON_CONFORMANT_CONFIG 0x800D
+#define GLX_NO_EXTENSION 3
+#define GLX_PBUFFER 0x8023
+#define GLX_PBUFFER_BIT 0x00000004
+#define GLX_PBUFFER_CLOBBER_MASK 0x08000000
+#define GLX_PBUFFER_HEIGHT 0x8040
+#define GLX_PBUFFER_WIDTH 0x8041
+#define GLX_PIXMAP_BIT 0x00000002
+#define GLX_PRESERVED_CONTENTS 0x801B
+#define GLX_PSEUDO_COLOR 0x8004
+#define GLX_PbufferClobber 0
+#define GLX_RED_SIZE 8
+#define GLX_RENDER_TYPE 0x8011
+#define GLX_RGBA 4
+#define GLX_RGBA_BIT 0x00000001
+#define GLX_RGBA_TYPE 0x8014
+#define GLX_SAMPLES 100001
+#define GLX_SAMPLE_BUFFERS 100000
+#define GLX_SAVED 0x8021
+#define GLX_SCREEN 0x800C
+#define GLX_SLOW_CONFIG 0x8001
+#define GLX_STATIC_COLOR 0x8005
+#define GLX_STATIC_GRAY 0x8007
+#define GLX_STENCIL_BUFFER_BIT 0x00000040
+#define GLX_STENCIL_SIZE 13
+#define GLX_STEREO 6
+#define GLX_SWAP_INTERVAL_EXT 0x20F1
+#define GLX_TRANSPARENT_ALPHA_VALUE 0x28
+#define GLX_TRANSPARENT_BLUE_VALUE 0x27
+#define GLX_TRANSPARENT_GREEN_VALUE 0x26
+#define GLX_TRANSPARENT_INDEX 0x8009
+#define GLX_TRANSPARENT_INDEX_VALUE 0x24
+#define GLX_TRANSPARENT_RED_VALUE 0x25
+#define GLX_TRANSPARENT_RGB 0x8008
+#define GLX_TRANSPARENT_TYPE 0x23
+#define GLX_TRUE_COLOR 0x8002
+#define GLX_USE_GL 1
+#define GLX_VENDOR 0x1
+#define GLX_VERSION 0x2
+#define GLX_VISUAL_ID 0x800B
+#define GLX_WIDTH 0x801D
+#define GLX_WINDOW 0x8022
+#define GLX_WINDOW_BIT 0x00000001
+#define GLX_X_RENDERABLE 0x8012
+#define GLX_X_VISUAL_TYPE 0x22
+#define __GLX_NUMBER_EVENTS 17
+
+
+#ifndef GLEXT_64_TYPES_DEFINED
+/* This code block is duplicated in glext.h, so must be protected */
+#define GLEXT_64_TYPES_DEFINED
+/* Define int32_t, int64_t, and uint64_t types for UST/MSC */
+/* (as used in the GLX_OML_sync_control extension). */
+#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
+#include <inttypes.h>
+#elif defined(__sun__) || defined(__digital__)
+#include <inttypes.h>
+#if defined(__STDC__)
+#if defined(__arch64__) || defined(_LP64)
+typedef long int int64_t;
+typedef unsigned long int uint64_t;
+#else
+typedef long long int int64_t;
+typedef unsigned long long int uint64_t;
+#endif /* __arch64__ */
+#endif /* __STDC__ */
+#elif defined( __VMS ) || defined(__sgi)
+#include <inttypes.h>
+#elif defined(__SCO__) || defined(__USLC__)
+#include <stdint.h>
+#elif defined(__UNIXOS2__) || defined(__SOL64__)
+typedef long int int32_t;
+typedef long long int int64_t;
+typedef unsigned long long int uint64_t;
+#elif defined(_WIN32) && defined(__GNUC__)
+#include <stdint.h>
+#elif defined(_WIN32)
+typedef __int32 int32_t;
+typedef __int64 int64_t;
+typedef unsigned __int64 uint64_t;
+#else
+/* Fallback if nothing above works */
+#include <inttypes.h>
+#endif
+#endif
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+#if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ > 1060)
+
+#else
+
+#endif
+
+#if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ > 1060)
+
+#else
+
+#endif
+
+
+
+
+
+
+
+typedef XID GLXFBConfigID;
+typedef struct __GLXFBConfigRec *GLXFBConfig;
+typedef XID GLXContextID;
+typedef struct __GLXcontextRec *GLXContext;
+typedef XID GLXPixmap;
+typedef XID GLXDrawable;
+typedef XID GLXWindow;
+typedef XID GLXPbuffer;
+typedef void (GLAD_API_PTR *__GLXextFuncPtr)(void);
+typedef XID GLXVideoCaptureDeviceNV;
+typedef unsigned int GLXVideoDeviceNV;
+typedef XID GLXVideoSourceSGIX;
+typedef XID GLXFBConfigIDSGIX;
+typedef struct __GLXFBConfigRec *GLXFBConfigSGIX;
+typedef XID GLXPbufferSGIX;
+typedef struct {
+    int event_type;             /* GLX_DAMAGED or GLX_SAVED */
+    int draw_type;              /* GLX_WINDOW or GLX_PBUFFER */
+    unsigned long serial;       /* # of last request processed by server */
+    Bool send_event;            /* true if this came for SendEvent request */
+    Display *display;           /* display the event was read from */
+    GLXDrawable drawable;       /* XID of Drawable */
+    unsigned int buffer_mask;   /* mask indicating which buffers are affected */
+    unsigned int aux_buffer;    /* which aux buffer was affected */
+    int x, y;
+    int width, height;
+    int count;                  /* if nonzero, at least this many more */
+} GLXPbufferClobberEvent;
+typedef struct {
+    int type;
+    unsigned long serial;       /* # of last request processed by server */
+    Bool send_event;            /* true if this came from a SendEvent request */
+    Display *display;           /* Display the event was read from */
+    GLXDrawable drawable;       /* drawable on which event was requested in event mask */
+    int event_type;
+    int64_t ust;
+    int64_t msc;
+    int64_t sbc;
+} GLXBufferSwapComplete;
+typedef union __GLXEvent {
+    GLXPbufferClobberEvent glxpbufferclobber;
+    GLXBufferSwapComplete glxbufferswapcomplete;
+    long pad[24];
+} GLXEvent;
+typedef struct {
+    int type;
+    unsigned long serial;
+    Bool send_event;
+    Display *display;
+    int extension;
+    int evtype;
+    GLXDrawable window;
+    Bool stereo_tree;
+} GLXStereoNotifyEventEXT;
+typedef struct {
+    int type;
+    unsigned long serial;   /* # of last request processed by server */
+    Bool send_event;        /* true if this came for SendEvent request */
+    Display *display;       /* display the event was read from */
+    GLXDrawable drawable;   /* i.d. of Drawable */
+    int event_type;         /* GLX_DAMAGED_SGIX or GLX_SAVED_SGIX */
+    int draw_type;          /* GLX_WINDOW_SGIX or GLX_PBUFFER_SGIX */
+    unsigned int mask;      /* mask indicating which buffers are affected*/
+    int x, y;
+    int width, height;
+    int count;              /* if nonzero, at least this many more */
+} GLXBufferClobberEventSGIX;
+typedef struct {
+    char    pipeName[80]; /* Should be [GLX_HYPERPIPE_PIPE_NAME_LENGTH_SGIX] */
+    int     networkId;
+} GLXHyperpipeNetworkSGIX;
+typedef struct {
+    char    pipeName[80]; /* Should be [GLX_HYPERPIPE_PIPE_NAME_LENGTH_SGIX] */
+    int     channel;
+    unsigned int participationType;
+    int     timeSlice;
+} GLXHyperpipeConfigSGIX;
+typedef struct {
+    char pipeName[80]; /* Should be [GLX_HYPERPIPE_PIPE_NAME_LENGTH_SGIX] */
+    int srcXOrigin, srcYOrigin, srcWidth, srcHeight;
+    int destXOrigin, destYOrigin, destWidth, destHeight;
+} GLXPipeRect;
+typedef struct {
+    char pipeName[80]; /* Should be [GLX_HYPERPIPE_PIPE_NAME_LENGTH_SGIX] */
+    int XOrigin, YOrigin, maxHeight, maxWidth;
+} GLXPipeRectLimits;
+
+
+#define GLX_VERSION_1_0 1
+GLAD_API_CALL int GLAD_GLX_VERSION_1_0;
+#define GLX_VERSION_1_1 1
+GLAD_API_CALL int GLAD_GLX_VERSION_1_1;
+#define GLX_VERSION_1_2 1
+GLAD_API_CALL int GLAD_GLX_VERSION_1_2;
+#define GLX_VERSION_1_3 1
+GLAD_API_CALL int GLAD_GLX_VERSION_1_3;
+#define GLX_VERSION_1_4 1
+GLAD_API_CALL int GLAD_GLX_VERSION_1_4;
+#define GLX_ARB_create_context 1
+GLAD_API_CALL int GLAD_GLX_ARB_create_context;
+#define GLX_ARB_create_context_profile 1
+GLAD_API_CALL int GLAD_GLX_ARB_create_context_profile;
+#define GLX_ARB_get_proc_address 1
+GLAD_API_CALL int GLAD_GLX_ARB_get_proc_address;
+#define GLX_EXT_swap_control 1
+GLAD_API_CALL int GLAD_GLX_EXT_swap_control;
+#define GLX_MESA_swap_control 1
+GLAD_API_CALL int GLAD_GLX_MESA_swap_control;
+#define GLX_SGI_swap_control 1
+GLAD_API_CALL int GLAD_GLX_SGI_swap_control;
+
+
+typedef GLXFBConfig * (GLAD_API_PTR *PFNGLXCHOOSEFBCONFIGPROC)(Display * dpy, int screen, const int * attrib_list, int * nelements);
+typedef XVisualInfo * (GLAD_API_PTR *PFNGLXCHOOSEVISUALPROC)(Display * dpy, int screen, int * attribList);
+typedef void (GLAD_API_PTR *PFNGLXCOPYCONTEXTPROC)(Display * dpy, GLXContext src, GLXContext dst, unsigned long mask);
+typedef GLXContext (GLAD_API_PTR *PFNGLXCREATECONTEXTPROC)(Display * dpy, XVisualInfo * vis, GLXContext shareList, Bool direct);
+typedef GLXContext (GLAD_API_PTR *PFNGLXCREATECONTEXTATTRIBSARBPROC)(Display * dpy, GLXFBConfig config, GLXContext share_context, Bool direct, const int * attrib_list);
+typedef GLXPixmap (GLAD_API_PTR *PFNGLXCREATEGLXPIXMAPPROC)(Display * dpy, XVisualInfo * visual, Pixmap pixmap);
+typedef GLXContext (GLAD_API_PTR *PFNGLXCREATENEWCONTEXTPROC)(Display * dpy, GLXFBConfig config, int render_type, GLXContext share_list, Bool direct);
+typedef GLXPbuffer (GLAD_API_PTR *PFNGLXCREATEPBUFFERPROC)(Display * dpy, GLXFBConfig config, const int * attrib_list);
+typedef GLXPixmap (GLAD_API_PTR *PFNGLXCREATEPIXMAPPROC)(Display * dpy, GLXFBConfig config, Pixmap pixmap, const int * attrib_list);
+typedef GLXWindow (GLAD_API_PTR *PFNGLXCREATEWINDOWPROC)(Display * dpy, GLXFBConfig config, Window win, const int * attrib_list);
+typedef void (GLAD_API_PTR *PFNGLXDESTROYCONTEXTPROC)(Display * dpy, GLXContext ctx);
+typedef void (GLAD_API_PTR *PFNGLXDESTROYGLXPIXMAPPROC)(Display * dpy, GLXPixmap pixmap);
+typedef void (GLAD_API_PTR *PFNGLXDESTROYPBUFFERPROC)(Display * dpy, GLXPbuffer pbuf);
+typedef void (GLAD_API_PTR *PFNGLXDESTROYPIXMAPPROC)(Display * dpy, GLXPixmap pixmap);
+typedef void (GLAD_API_PTR *PFNGLXDESTROYWINDOWPROC)(Display * dpy, GLXWindow win);
+typedef const char * (GLAD_API_PTR *PFNGLXGETCLIENTSTRINGPROC)(Display * dpy, int name);
+typedef int (GLAD_API_PTR *PFNGLXGETCONFIGPROC)(Display * dpy, XVisualInfo * visual, int attrib, int * value);
+typedef GLXContext (GLAD_API_PTR *PFNGLXGETCURRENTCONTEXTPROC)(void);
+typedef Display * (GLAD_API_PTR *PFNGLXGETCURRENTDISPLAYPROC)(void);
+typedef GLXDrawable (GLAD_API_PTR *PFNGLXGETCURRENTDRAWABLEPROC)(void);
+typedef GLXDrawable (GLAD_API_PTR *PFNGLXGETCURRENTREADDRAWABLEPROC)(void);
+typedef int (GLAD_API_PTR *PFNGLXGETFBCONFIGATTRIBPROC)(Display * dpy, GLXFBConfig config, int attribute, int * value);
+typedef GLXFBConfig * (GLAD_API_PTR *PFNGLXGETFBCONFIGSPROC)(Display * dpy, int screen, int * nelements);
+typedef __GLXextFuncPtr (GLAD_API_PTR *PFNGLXGETPROCADDRESSPROC)(const GLubyte * procName);
+typedef __GLXextFuncPtr (GLAD_API_PTR *PFNGLXGETPROCADDRESSARBPROC)(const GLubyte * procName);
+typedef void (GLAD_API_PTR *PFNGLXGETSELECTEDEVENTPROC)(Display * dpy, GLXDrawable draw, unsigned long * event_mask);
+typedef int (GLAD_API_PTR *PFNGLXGETSWAPINTERVALMESAPROC)(void);
+typedef XVisualInfo * (GLAD_API_PTR *PFNGLXGETVISUALFROMFBCONFIGPROC)(Display * dpy, GLXFBConfig config);
+typedef Bool (GLAD_API_PTR *PFNGLXISDIRECTPROC)(Display * dpy, GLXContext ctx);
+typedef Bool (GLAD_API_PTR *PFNGLXMAKECONTEXTCURRENTPROC)(Display * dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx);
+typedef Bool (GLAD_API_PTR *PFNGLXMAKECURRENTPROC)(Display * dpy, GLXDrawable drawable, GLXContext ctx);
+typedef int (GLAD_API_PTR *PFNGLXQUERYCONTEXTPROC)(Display * dpy, GLXContext ctx, int attribute, int * value);
+typedef void (GLAD_API_PTR *PFNGLXQUERYDRAWABLEPROC)(Display * dpy, GLXDrawable draw, int attribute, unsigned int * value);
+typedef Bool (GLAD_API_PTR *PFNGLXQUERYEXTENSIONPROC)(Display * dpy, int * errorb, int * event);
+typedef const char * (GLAD_API_PTR *PFNGLXQUERYEXTENSIONSSTRINGPROC)(Display * dpy, int screen);
+typedef const char * (GLAD_API_PTR *PFNGLXQUERYSERVERSTRINGPROC)(Display * dpy, int screen, int name);
+typedef Bool (GLAD_API_PTR *PFNGLXQUERYVERSIONPROC)(Display * dpy, int * maj, int * min);
+typedef void (GLAD_API_PTR *PFNGLXSELECTEVENTPROC)(Display * dpy, GLXDrawable draw, unsigned long event_mask);
+typedef void (GLAD_API_PTR *PFNGLXSWAPBUFFERSPROC)(Display * dpy, GLXDrawable drawable);
+typedef void (GLAD_API_PTR *PFNGLXSWAPINTERVALEXTPROC)(Display * dpy, GLXDrawable drawable, int interval);
+typedef int (GLAD_API_PTR *PFNGLXSWAPINTERVALMESAPROC)(unsigned int interval);
+typedef int (GLAD_API_PTR *PFNGLXSWAPINTERVALSGIPROC)(int interval);
+typedef void (GLAD_API_PTR *PFNGLXUSEXFONTPROC)(Font font, int first, int count, int list);
+typedef void (GLAD_API_PTR *PFNGLXWAITGLPROC)(void);
+typedef void (GLAD_API_PTR *PFNGLXWAITXPROC)(void);
+
+GLAD_API_CALL PFNGLXCHOOSEFBCONFIGPROC glad_glXChooseFBConfig;
+#define glXChooseFBConfig glad_glXChooseFBConfig
+GLAD_API_CALL PFNGLXCHOOSEVISUALPROC glad_glXChooseVisual;
+#define glXChooseVisual glad_glXChooseVisual
+GLAD_API_CALL PFNGLXCOPYCONTEXTPROC glad_glXCopyContext;
+#define glXCopyContext glad_glXCopyContext
+GLAD_API_CALL PFNGLXCREATECONTEXTPROC glad_glXCreateContext;
+#define glXCreateContext glad_glXCreateContext
+GLAD_API_CALL PFNGLXCREATECONTEXTATTRIBSARBPROC glad_glXCreateContextAttribsARB;
+#define glXCreateContextAttribsARB glad_glXCreateContextAttribsARB
+GLAD_API_CALL PFNGLXCREATEGLXPIXMAPPROC glad_glXCreateGLXPixmap;
+#define glXCreateGLXPixmap glad_glXCreateGLXPixmap
+GLAD_API_CALL PFNGLXCREATENEWCONTEXTPROC glad_glXCreateNewContext;
+#define glXCreateNewContext glad_glXCreateNewContext
+GLAD_API_CALL PFNGLXCREATEPBUFFERPROC glad_glXCreatePbuffer;
+#define glXCreatePbuffer glad_glXCreatePbuffer
+GLAD_API_CALL PFNGLXCREATEPIXMAPPROC glad_glXCreatePixmap;
+#define glXCreatePixmap glad_glXCreatePixmap
+GLAD_API_CALL PFNGLXCREATEWINDOWPROC glad_glXCreateWindow;
+#define glXCreateWindow glad_glXCreateWindow
+GLAD_API_CALL PFNGLXDESTROYCONTEXTPROC glad_glXDestroyContext;
+#define glXDestroyContext glad_glXDestroyContext
+GLAD_API_CALL PFNGLXDESTROYGLXPIXMAPPROC glad_glXDestroyGLXPixmap;
+#define glXDestroyGLXPixmap glad_glXDestroyGLXPixmap
+GLAD_API_CALL PFNGLXDESTROYPBUFFERPROC glad_glXDestroyPbuffer;
+#define glXDestroyPbuffer glad_glXDestroyPbuffer
+GLAD_API_CALL PFNGLXDESTROYPIXMAPPROC glad_glXDestroyPixmap;
+#define glXDestroyPixmap glad_glXDestroyPixmap
+GLAD_API_CALL PFNGLXDESTROYWINDOWPROC glad_glXDestroyWindow;
+#define glXDestroyWindow glad_glXDestroyWindow
+GLAD_API_CALL PFNGLXGETCLIENTSTRINGPROC glad_glXGetClientString;
+#define glXGetClientString glad_glXGetClientString
+GLAD_API_CALL PFNGLXGETCONFIGPROC glad_glXGetConfig;
+#define glXGetConfig glad_glXGetConfig
+GLAD_API_CALL PFNGLXGETCURRENTCONTEXTPROC glad_glXGetCurrentContext;
+#define glXGetCurrentContext glad_glXGetCurrentContext
+GLAD_API_CALL PFNGLXGETCURRENTDISPLAYPROC glad_glXGetCurrentDisplay;
+#define glXGetCurrentDisplay glad_glXGetCurrentDisplay
+GLAD_API_CALL PFNGLXGETCURRENTDRAWABLEPROC glad_glXGetCurrentDrawable;
+#define glXGetCurrentDrawable glad_glXGetCurrentDrawable
+GLAD_API_CALL PFNGLXGETCURRENTREADDRAWABLEPROC glad_glXGetCurrentReadDrawable;
+#define glXGetCurrentReadDrawable glad_glXGetCurrentReadDrawable
+GLAD_API_CALL PFNGLXGETFBCONFIGATTRIBPROC glad_glXGetFBConfigAttrib;
+#define glXGetFBConfigAttrib glad_glXGetFBConfigAttrib
+GLAD_API_CALL PFNGLXGETFBCONFIGSPROC glad_glXGetFBConfigs;
+#define glXGetFBConfigs glad_glXGetFBConfigs
+GLAD_API_CALL PFNGLXGETPROCADDRESSPROC glad_glXGetProcAddress;
+#define glXGetProcAddress glad_glXGetProcAddress
+GLAD_API_CALL PFNGLXGETPROCADDRESSARBPROC glad_glXGetProcAddressARB;
+#define glXGetProcAddressARB glad_glXGetProcAddressARB
+GLAD_API_CALL PFNGLXGETSELECTEDEVENTPROC glad_glXGetSelectedEvent;
+#define glXGetSelectedEvent glad_glXGetSelectedEvent
+GLAD_API_CALL PFNGLXGETSWAPINTERVALMESAPROC glad_glXGetSwapIntervalMESA;
+#define glXGetSwapIntervalMESA glad_glXGetSwapIntervalMESA
+GLAD_API_CALL PFNGLXGETVISUALFROMFBCONFIGPROC glad_glXGetVisualFromFBConfig;
+#define glXGetVisualFromFBConfig glad_glXGetVisualFromFBConfig
+GLAD_API_CALL PFNGLXISDIRECTPROC glad_glXIsDirect;
+#define glXIsDirect glad_glXIsDirect
+GLAD_API_CALL PFNGLXMAKECONTEXTCURRENTPROC glad_glXMakeContextCurrent;
+#define glXMakeContextCurrent glad_glXMakeContextCurrent
+GLAD_API_CALL PFNGLXMAKECURRENTPROC glad_glXMakeCurrent;
+#define glXMakeCurrent glad_glXMakeCurrent
+GLAD_API_CALL PFNGLXQUERYCONTEXTPROC glad_glXQueryContext;
+#define glXQueryContext glad_glXQueryContext
+GLAD_API_CALL PFNGLXQUERYDRAWABLEPROC glad_glXQueryDrawable;
+#define glXQueryDrawable glad_glXQueryDrawable
+GLAD_API_CALL PFNGLXQUERYEXTENSIONPROC glad_glXQueryExtension;
+#define glXQueryExtension glad_glXQueryExtension
+GLAD_API_CALL PFNGLXQUERYEXTENSIONSSTRINGPROC glad_glXQueryExtensionsString;
+#define glXQueryExtensionsString glad_glXQueryExtensionsString
+GLAD_API_CALL PFNGLXQUERYSERVERSTRINGPROC glad_glXQueryServerString;
+#define glXQueryServerString glad_glXQueryServerString
+GLAD_API_CALL PFNGLXQUERYVERSIONPROC glad_glXQueryVersion;
+#define glXQueryVersion glad_glXQueryVersion
+GLAD_API_CALL PFNGLXSELECTEVENTPROC glad_glXSelectEvent;
+#define glXSelectEvent glad_glXSelectEvent
+GLAD_API_CALL PFNGLXSWAPBUFFERSPROC glad_glXSwapBuffers;
+#define glXSwapBuffers glad_glXSwapBuffers
+GLAD_API_CALL PFNGLXSWAPINTERVALEXTPROC glad_glXSwapIntervalEXT;
+#define glXSwapIntervalEXT glad_glXSwapIntervalEXT
+GLAD_API_CALL PFNGLXSWAPINTERVALMESAPROC glad_glXSwapIntervalMESA;
+#define glXSwapIntervalMESA glad_glXSwapIntervalMESA
+GLAD_API_CALL PFNGLXSWAPINTERVALSGIPROC glad_glXSwapIntervalSGI;
+#define glXSwapIntervalSGI glad_glXSwapIntervalSGI
+GLAD_API_CALL PFNGLXUSEXFONTPROC glad_glXUseXFont;
+#define glXUseXFont glad_glXUseXFont
+GLAD_API_CALL PFNGLXWAITGLPROC glad_glXWaitGL;
+#define glXWaitGL glad_glXWaitGL
+GLAD_API_CALL PFNGLXWAITXPROC glad_glXWaitX;
+#define glXWaitX glad_glXWaitX
+
+
+
+
+
+GLAD_API_CALL int gladLoadGLXUserPtr(Display *display, int screen, GLADuserptrloadfunc load, void *userptr);
+GLAD_API_CALL int gladLoadGLX(Display *display, int screen, GLADloadfunc load);
+
+#ifdef GLAD_GLX
+
+GLAD_API_CALL int gladLoaderLoadGLX(Display *display, int screen);
+
+GLAD_API_CALL void gladLoaderUnloadGLX(void);
+
+#endif
+#ifdef __cplusplus
+}
+#endif
+#endif
diff --git a/thirdparty/glad/glx.c b/thirdparty/glad/glx.c
new file mode 100644
index 0000000000..6391027db2
--- /dev/null
+++ b/thirdparty/glad/glx.c
@@ -0,0 +1,395 @@
+/**
+ * SPDX-License-Identifier: (WTFPL OR CC0-1.0) AND Apache-2.0
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <glad/glx.h>
+
+#ifndef GLAD_IMPL_UTIL_C_
+#define GLAD_IMPL_UTIL_C_
+
+#ifdef _MSC_VER
+#define GLAD_IMPL_UTIL_SSCANF sscanf_s
+#else
+#define GLAD_IMPL_UTIL_SSCANF sscanf
+#endif
+
+#endif /* GLAD_IMPL_UTIL_C_ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+
+int GLAD_GLX_VERSION_1_0 = 0;
+int GLAD_GLX_VERSION_1_1 = 0;
+int GLAD_GLX_VERSION_1_2 = 0;
+int GLAD_GLX_VERSION_1_3 = 0;
+int GLAD_GLX_VERSION_1_4 = 0;
+int GLAD_GLX_ARB_create_context = 0;
+int GLAD_GLX_ARB_create_context_profile = 0;
+int GLAD_GLX_ARB_get_proc_address = 0;
+int GLAD_GLX_EXT_swap_control = 0;
+int GLAD_GLX_MESA_swap_control = 0;
+int GLAD_GLX_SGI_swap_control = 0;
+
+
+
+PFNGLXCHOOSEFBCONFIGPROC glad_glXChooseFBConfig = NULL;
+PFNGLXCHOOSEVISUALPROC glad_glXChooseVisual = NULL;
+PFNGLXCOPYCONTEXTPROC glad_glXCopyContext = NULL;
+PFNGLXCREATECONTEXTPROC glad_glXCreateContext = NULL;
+PFNGLXCREATECONTEXTATTRIBSARBPROC glad_glXCreateContextAttribsARB = NULL;
+PFNGLXCREATEGLXPIXMAPPROC glad_glXCreateGLXPixmap = NULL;
+PFNGLXCREATENEWCONTEXTPROC glad_glXCreateNewContext = NULL;
+PFNGLXCREATEPBUFFERPROC glad_glXCreatePbuffer = NULL;
+PFNGLXCREATEPIXMAPPROC glad_glXCreatePixmap = NULL;
+PFNGLXCREATEWINDOWPROC glad_glXCreateWindow = NULL;
+PFNGLXDESTROYCONTEXTPROC glad_glXDestroyContext = NULL;
+PFNGLXDESTROYGLXPIXMAPPROC glad_glXDestroyGLXPixmap = NULL;
+PFNGLXDESTROYPBUFFERPROC glad_glXDestroyPbuffer = NULL;
+PFNGLXDESTROYPIXMAPPROC glad_glXDestroyPixmap = NULL;
+PFNGLXDESTROYWINDOWPROC glad_glXDestroyWindow = NULL;
+PFNGLXGETCLIENTSTRINGPROC glad_glXGetClientString = NULL;
+PFNGLXGETCONFIGPROC glad_glXGetConfig = NULL;
+PFNGLXGETCURRENTCONTEXTPROC glad_glXGetCurrentContext = NULL;
+PFNGLXGETCURRENTDISPLAYPROC glad_glXGetCurrentDisplay = NULL;
+PFNGLXGETCURRENTDRAWABLEPROC glad_glXGetCurrentDrawable = NULL;
+PFNGLXGETCURRENTREADDRAWABLEPROC glad_glXGetCurrentReadDrawable = NULL;
+PFNGLXGETFBCONFIGATTRIBPROC glad_glXGetFBConfigAttrib = NULL;
+PFNGLXGETFBCONFIGSPROC glad_glXGetFBConfigs = NULL;
+PFNGLXGETPROCADDRESSPROC glad_glXGetProcAddress = NULL;
+PFNGLXGETPROCADDRESSARBPROC glad_glXGetProcAddressARB = NULL;
+PFNGLXGETSELECTEDEVENTPROC glad_glXGetSelectedEvent = NULL;
+PFNGLXGETSWAPINTERVALMESAPROC glad_glXGetSwapIntervalMESA = NULL;
+PFNGLXGETVISUALFROMFBCONFIGPROC glad_glXGetVisualFromFBConfig = NULL;
+PFNGLXISDIRECTPROC glad_glXIsDirect = NULL;
+PFNGLXMAKECONTEXTCURRENTPROC glad_glXMakeContextCurrent = NULL;
+PFNGLXMAKECURRENTPROC glad_glXMakeCurrent = NULL;
+PFNGLXQUERYCONTEXTPROC glad_glXQueryContext = NULL;
+PFNGLXQUERYDRAWABLEPROC glad_glXQueryDrawable = NULL;
+PFNGLXQUERYEXTENSIONPROC glad_glXQueryExtension = NULL;
+PFNGLXQUERYEXTENSIONSSTRINGPROC glad_glXQueryExtensionsString = NULL;
+PFNGLXQUERYSERVERSTRINGPROC glad_glXQueryServerString = NULL;
+PFNGLXQUERYVERSIONPROC glad_glXQueryVersion = NULL;
+PFNGLXSELECTEVENTPROC glad_glXSelectEvent = NULL;
+PFNGLXSWAPBUFFERSPROC glad_glXSwapBuffers = NULL;
+PFNGLXSWAPINTERVALEXTPROC glad_glXSwapIntervalEXT = NULL;
+PFNGLXSWAPINTERVALMESAPROC glad_glXSwapIntervalMESA = NULL;
+PFNGLXSWAPINTERVALSGIPROC glad_glXSwapIntervalSGI = NULL;
+PFNGLXUSEXFONTPROC glad_glXUseXFont = NULL;
+PFNGLXWAITGLPROC glad_glXWaitGL = NULL;
+PFNGLXWAITXPROC glad_glXWaitX = NULL;
+
+
+static void glad_glx_load_GLX_VERSION_1_0( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GLX_VERSION_1_0) return;
+    glad_glXChooseVisual = (PFNGLXCHOOSEVISUALPROC) load(userptr, "glXChooseVisual");
+    glad_glXCopyContext = (PFNGLXCOPYCONTEXTPROC) load(userptr, "glXCopyContext");
+    glad_glXCreateContext = (PFNGLXCREATECONTEXTPROC) load(userptr, "glXCreateContext");
+    glad_glXCreateGLXPixmap = (PFNGLXCREATEGLXPIXMAPPROC) load(userptr, "glXCreateGLXPixmap");
+    glad_glXDestroyContext = (PFNGLXDESTROYCONTEXTPROC) load(userptr, "glXDestroyContext");
+    glad_glXDestroyGLXPixmap = (PFNGLXDESTROYGLXPIXMAPPROC) load(userptr, "glXDestroyGLXPixmap");
+    glad_glXGetConfig = (PFNGLXGETCONFIGPROC) load(userptr, "glXGetConfig");
+    glad_glXGetCurrentContext = (PFNGLXGETCURRENTCONTEXTPROC) load(userptr, "glXGetCurrentContext");
+    glad_glXGetCurrentDrawable = (PFNGLXGETCURRENTDRAWABLEPROC) load(userptr, "glXGetCurrentDrawable");
+    glad_glXIsDirect = (PFNGLXISDIRECTPROC) load(userptr, "glXIsDirect");
+    glad_glXMakeCurrent = (PFNGLXMAKECURRENTPROC) load(userptr, "glXMakeCurrent");
+    glad_glXQueryExtension = (PFNGLXQUERYEXTENSIONPROC) load(userptr, "glXQueryExtension");
+    glad_glXQueryVersion = (PFNGLXQUERYVERSIONPROC) load(userptr, "glXQueryVersion");
+    glad_glXSwapBuffers = (PFNGLXSWAPBUFFERSPROC) load(userptr, "glXSwapBuffers");
+    glad_glXUseXFont = (PFNGLXUSEXFONTPROC) load(userptr, "glXUseXFont");
+    glad_glXWaitGL = (PFNGLXWAITGLPROC) load(userptr, "glXWaitGL");
+    glad_glXWaitX = (PFNGLXWAITXPROC) load(userptr, "glXWaitX");
+}
+static void glad_glx_load_GLX_VERSION_1_1( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GLX_VERSION_1_1) return;
+    glad_glXGetClientString = (PFNGLXGETCLIENTSTRINGPROC) load(userptr, "glXGetClientString");
+    glad_glXQueryExtensionsString = (PFNGLXQUERYEXTENSIONSSTRINGPROC) load(userptr, "glXQueryExtensionsString");
+    glad_glXQueryServerString = (PFNGLXQUERYSERVERSTRINGPROC) load(userptr, "glXQueryServerString");
+}
+static void glad_glx_load_GLX_VERSION_1_2( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GLX_VERSION_1_2) return;
+    glad_glXGetCurrentDisplay = (PFNGLXGETCURRENTDISPLAYPROC) load(userptr, "glXGetCurrentDisplay");
+}
+static void glad_glx_load_GLX_VERSION_1_3( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GLX_VERSION_1_3) return;
+    glad_glXChooseFBConfig = (PFNGLXCHOOSEFBCONFIGPROC) load(userptr, "glXChooseFBConfig");
+    glad_glXCreateNewContext = (PFNGLXCREATENEWCONTEXTPROC) load(userptr, "glXCreateNewContext");
+    glad_glXCreatePbuffer = (PFNGLXCREATEPBUFFERPROC) load(userptr, "glXCreatePbuffer");
+    glad_glXCreatePixmap = (PFNGLXCREATEPIXMAPPROC) load(userptr, "glXCreatePixmap");
+    glad_glXCreateWindow = (PFNGLXCREATEWINDOWPROC) load(userptr, "glXCreateWindow");
+    glad_glXDestroyPbuffer = (PFNGLXDESTROYPBUFFERPROC) load(userptr, "glXDestroyPbuffer");
+    glad_glXDestroyPixmap = (PFNGLXDESTROYPIXMAPPROC) load(userptr, "glXDestroyPixmap");
+    glad_glXDestroyWindow = (PFNGLXDESTROYWINDOWPROC) load(userptr, "glXDestroyWindow");
+    glad_glXGetCurrentReadDrawable = (PFNGLXGETCURRENTREADDRAWABLEPROC) load(userptr, "glXGetCurrentReadDrawable");
+    glad_glXGetFBConfigAttrib = (PFNGLXGETFBCONFIGATTRIBPROC) load(userptr, "glXGetFBConfigAttrib");
+    glad_glXGetFBConfigs = (PFNGLXGETFBCONFIGSPROC) load(userptr, "glXGetFBConfigs");
+    glad_glXGetSelectedEvent = (PFNGLXGETSELECTEDEVENTPROC) load(userptr, "glXGetSelectedEvent");
+    glad_glXGetVisualFromFBConfig = (PFNGLXGETVISUALFROMFBCONFIGPROC) load(userptr, "glXGetVisualFromFBConfig");
+    glad_glXMakeContextCurrent = (PFNGLXMAKECONTEXTCURRENTPROC) load(userptr, "glXMakeContextCurrent");
+    glad_glXQueryContext = (PFNGLXQUERYCONTEXTPROC) load(userptr, "glXQueryContext");
+    glad_glXQueryDrawable = (PFNGLXQUERYDRAWABLEPROC) load(userptr, "glXQueryDrawable");
+    glad_glXSelectEvent = (PFNGLXSELECTEVENTPROC) load(userptr, "glXSelectEvent");
+}
+static void glad_glx_load_GLX_VERSION_1_4( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GLX_VERSION_1_4) return;
+    glad_glXGetProcAddress = (PFNGLXGETPROCADDRESSPROC) load(userptr, "glXGetProcAddress");
+}
+static void glad_glx_load_GLX_ARB_create_context( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GLX_ARB_create_context) return;
+    glad_glXCreateContextAttribsARB = (PFNGLXCREATECONTEXTATTRIBSARBPROC) load(userptr, "glXCreateContextAttribsARB");
+}
+static void glad_glx_load_GLX_ARB_get_proc_address( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GLX_ARB_get_proc_address) return;
+    glad_glXGetProcAddressARB = (PFNGLXGETPROCADDRESSARBPROC) load(userptr, "glXGetProcAddressARB");
+}
+static void glad_glx_load_GLX_EXT_swap_control( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GLX_EXT_swap_control) return;
+    glad_glXSwapIntervalEXT = (PFNGLXSWAPINTERVALEXTPROC) load(userptr, "glXSwapIntervalEXT");
+}
+static void glad_glx_load_GLX_MESA_swap_control( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GLX_MESA_swap_control) return;
+    glad_glXGetSwapIntervalMESA = (PFNGLXGETSWAPINTERVALMESAPROC) load(userptr, "glXGetSwapIntervalMESA");
+    glad_glXSwapIntervalMESA = (PFNGLXSWAPINTERVALMESAPROC) load(userptr, "glXSwapIntervalMESA");
+}
+static void glad_glx_load_GLX_SGI_swap_control( GLADuserptrloadfunc load, void* userptr) {
+    if(!GLAD_GLX_SGI_swap_control) return;
+    glad_glXSwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC) load(userptr, "glXSwapIntervalSGI");
+}
+
+
+
+static int glad_glx_has_extension(Display *display, int screen, const char *ext) {
+#ifndef GLX_VERSION_1_1
+    GLAD_UNUSED(display);
+    GLAD_UNUSED(screen);
+    GLAD_UNUSED(ext);
+#else
+    const char *terminator;
+    const char *loc;
+    const char *extensions;
+
+    if (glXQueryExtensionsString == NULL) {
+        return 0;
+    }
+
+    extensions = glXQueryExtensionsString(display, screen);
+
+    if(extensions == NULL || ext == NULL) {
+        return 0;
+    }
+
+    while(1) {
+        loc = strstr(extensions, ext);
+        if(loc == NULL)
+            break;
+
+        terminator = loc + strlen(ext);
+        if((loc == extensions || *(loc - 1) == ' ') &&
+            (*terminator == ' ' || *terminator == '\0')) {
+            return 1;
+        }
+        extensions = terminator;
+    }
+#endif
+
+    return 0;
+}
+
+static GLADapiproc glad_glx_get_proc_from_userptr(void *userptr, const char* name) {
+    return (GLAD_GNUC_EXTENSION (GLADapiproc (*)(const char *name)) userptr)(name);
+}
+
+static int glad_glx_find_extensions(Display *display, int screen) {
+    GLAD_GLX_ARB_create_context = glad_glx_has_extension(display, screen, "GLX_ARB_create_context");
+    GLAD_GLX_ARB_create_context_profile = glad_glx_has_extension(display, screen, "GLX_ARB_create_context_profile");
+    GLAD_GLX_ARB_get_proc_address = glad_glx_has_extension(display, screen, "GLX_ARB_get_proc_address");
+    GLAD_GLX_EXT_swap_control = glad_glx_has_extension(display, screen, "GLX_EXT_swap_control");
+    GLAD_GLX_MESA_swap_control = glad_glx_has_extension(display, screen, "GLX_MESA_swap_control");
+    GLAD_GLX_SGI_swap_control = glad_glx_has_extension(display, screen, "GLX_SGI_swap_control");
+    return 1;
+}
+
+static int glad_glx_find_core_glx(Display **display, int *screen) {
+    int major = 0, minor = 0;
+    if(*display == NULL) {
+#ifdef GLAD_GLX_NO_X11
+        GLAD_UNUSED(screen);
+        return 0;
+#else
+        *display = XOpenDisplay(0);
+        if (*display == NULL) {
+            return 0;
+        }
+        *screen = XScreenNumberOfScreen(XDefaultScreenOfDisplay(*display));
+#endif
+    }
+    glXQueryVersion(*display, &major, &minor);
+    GLAD_GLX_VERSION_1_0 = (major == 1 && minor >= 0) || major > 1;
+    GLAD_GLX_VERSION_1_1 = (major == 1 && minor >= 1) || major > 1;
+    GLAD_GLX_VERSION_1_2 = (major == 1 && minor >= 2) || major > 1;
+    GLAD_GLX_VERSION_1_3 = (major == 1 && minor >= 3) || major > 1;
+    GLAD_GLX_VERSION_1_4 = (major == 1 && minor >= 4) || major > 1;
+    return GLAD_MAKE_VERSION(major, minor);
+}
+
+int gladLoadGLXUserPtr(Display *display, int screen, GLADuserptrloadfunc load, void *userptr) {
+    int version;
+    glXQueryVersion = (PFNGLXQUERYVERSIONPROC) load(userptr, "glXQueryVersion");
+    if(glXQueryVersion == NULL) return 0;
+    version = glad_glx_find_core_glx(&display, &screen);
+
+    glad_glx_load_GLX_VERSION_1_0(load, userptr);
+    glad_glx_load_GLX_VERSION_1_1(load, userptr);
+    glad_glx_load_GLX_VERSION_1_2(load, userptr);
+    glad_glx_load_GLX_VERSION_1_3(load, userptr);
+    glad_glx_load_GLX_VERSION_1_4(load, userptr);
+
+    if (!glad_glx_find_extensions(display, screen)) return 0;
+    glad_glx_load_GLX_ARB_create_context(load, userptr);
+    glad_glx_load_GLX_ARB_get_proc_address(load, userptr);
+    glad_glx_load_GLX_EXT_swap_control(load, userptr);
+    glad_glx_load_GLX_MESA_swap_control(load, userptr);
+    glad_glx_load_GLX_SGI_swap_control(load, userptr);
+
+
+    return version;
+}
+
+int gladLoadGLX(Display *display, int screen, GLADloadfunc load) {
+    return gladLoadGLXUserPtr(display, screen, glad_glx_get_proc_from_userptr, GLAD_GNUC_EXTENSION (void*) load);
+}
+
+ 
+
+#ifdef GLAD_GLX
+
+#ifndef GLAD_LOADER_LIBRARY_C_
+#define GLAD_LOADER_LIBRARY_C_
+
+#include <stddef.h>
+#include <stdlib.h>
+
+#if GLAD_PLATFORM_WIN32
+#include <windows.h>
+#else
+#include <dlfcn.h>
+#endif
+
+
+static void* glad_get_dlopen_handle(const char *lib_names[], int length) {
+    void *handle = NULL;
+    int i;
+
+    for (i = 0; i < length; ++i) {
+#if GLAD_PLATFORM_WIN32
+  #if GLAD_PLATFORM_UWP
+        size_t buffer_size = (strlen(lib_names[i]) + 1) * sizeof(WCHAR);
+        LPWSTR buffer = (LPWSTR) malloc(buffer_size);
+        if (buffer != NULL) {
+            int ret = MultiByteToWideChar(CP_ACP, 0, lib_names[i], -1, buffer, buffer_size);
+            if (ret != 0) {
+                handle = (void*) LoadPackagedLibrary(buffer, 0);
+            }
+            free((void*) buffer);
+        }
+  #else
+        handle = (void*) LoadLibraryA(lib_names[i]);
+  #endif
+#else
+        handle = dlopen(lib_names[i], RTLD_LAZY | RTLD_LOCAL);
+#endif
+        if (handle != NULL) {
+            return handle;
+        }
+    }
+
+    return NULL;
+}
+
+static void glad_close_dlopen_handle(void* handle) {
+    if (handle != NULL) {
+#if GLAD_PLATFORM_WIN32
+        FreeLibrary((HMODULE) handle);
+#else
+        dlclose(handle);
+#endif
+    }
+}
+
+static GLADapiproc glad_dlsym_handle(void* handle, const char *name) {
+    if (handle == NULL) {
+        return NULL;
+    }
+
+#if GLAD_PLATFORM_WIN32
+    return (GLADapiproc) GetProcAddress((HMODULE) handle, name);
+#else
+    return GLAD_GNUC_EXTENSION (GLADapiproc) dlsym(handle, name);
+#endif
+}
+
+#endif /* GLAD_LOADER_LIBRARY_C_ */
+
+typedef void* (GLAD_API_PTR *GLADglxprocaddrfunc)(const char*);
+
+static GLADapiproc glad_glx_get_proc(void *userptr, const char *name) {
+    return GLAD_GNUC_EXTENSION ((GLADapiproc (*)(const char *name)) userptr)(name);
+}
+
+static void* _glx_handle;
+
+static void* glad_glx_dlopen_handle(void) {
+    static const char *NAMES[] = {
+#if defined __CYGWIN__
+        "libGL-1.so",
+#endif
+        "libGL.so.1",
+        "libGL.so"
+    };
+
+    if (_glx_handle == NULL) {
+        _glx_handle = glad_get_dlopen_handle(NAMES, sizeof(NAMES) / sizeof(NAMES[0]));
+    }
+
+    return _glx_handle;
+}
+
+int gladLoaderLoadGLX(Display *display, int screen) {
+    int version = 0;
+    void *handle = NULL;
+    int did_load = 0;
+    GLADglxprocaddrfunc loader;
+
+    did_load = _glx_handle == NULL;
+    handle = glad_glx_dlopen_handle();
+    if (handle != NULL) {
+        loader = (GLADglxprocaddrfunc) glad_dlsym_handle(handle, "glXGetProcAddressARB");
+        if (loader != NULL) {
+            version = gladLoadGLXUserPtr(display, screen, glad_glx_get_proc, GLAD_GNUC_EXTENSION (void*) loader);
+        }
+
+        if (!version && did_load) {
+            gladLoaderUnloadGLX();
+        }
+    }
+
+    return version;
+}
+
+
+void gladLoaderUnloadGLX() {
+    if (_glx_handle != NULL) {
+        glad_close_dlopen_handle(_glx_handle);
+        _glx_handle = NULL;
+    }
+}
+
+#endif /* GLAD_GLX */
+
+#ifdef __cplusplus
+}
+#endif