feat(glfw): allow to switch backend

src/args.c

@@ -7,6 +7,8 @@
 
 #include "types.h"
 
+#include "constants.h"
+
 #include "args.h"
 #include "config.h"
 #include "string.h"
@@ -42,6 +44,10 @@ static void print_help(int status_code) {
       "[-mr / -nmr] "
       "[-tm] "
       "[-tf] "
+      "[--x11] "
+      "[--wayland] "
+      "[--cocoa] "
+      "[--win32] "
       "\n\n"
       "Fusion Of Real-time Generative Effects.\n\n"
       "options:\n"
@@ -81,7 +87,11 @@ static void print_help(int status_code) {
       "  -mr, --midi-reconnect       auto-reconnect midi (default)\n"
       "  -nmr, --no-midi-reconnect   do not auto-reconnect midi\n"
       "  -tm, --trace-midi           print midi code and values\n"
-      "  -tf, --trace-fps            print fps status of subsystems\n");
+      "  -tf, --trace-fps            print fps status of subsystems\n"
+      "  --x11                       force X11 GLFW backend\n"
+      "  --wayland                   force Wayland GLFW backend\n"
+      "  --cocoa                     force Cocoa GLFW backend\n"
+      "  --win32                     force Win32 GLFW backend\n");
   exit(status_code);
 }
 
@@ -152,6 +162,7 @@ void args_parse(Parameters *params, int argc, char **argv) {
   params->midi_reconnect = true;
   params->trace_midi = false;
   params->trace_fps = false;
+  params->glfw_backend = GLFW_BACKEND_ANY;
 
   for (int i = 1; i < argc; i++) {
     arg = argv[i];
@@ -220,6 +231,14 @@ void args_parse(Parameters *params, int argc, char **argv) {
       params->trace_midi = true;
     } else if (is_arg(arg, "-tf") || is_arg(arg, "--trace-fps")) {
       params->trace_fps = true;
+    } else if (is_arg(arg, "--x11")) {
+      params->glfw_backend = GLFW_BACKEND_X11;
+    } else if (is_arg(arg, "--wayland")) {
+      params->glfw_backend = GLFW_BACKEND_WAYLAND;
+    } else if (is_arg(arg, "--cocoa")) {
+      params->glfw_backend = GLFW_BACKEND_COCOA;
+    } else if (is_arg(arg, "--win32")) {
+      params->glfw_backend = GLFW_BACKEND_WIN32;
     } else {
 #ifdef VIDEO_IN
       if (is_arg(arg, "-vi") || is_arg(arg, "--video-in")) {