From aacb1091dff2235f7d0d5b52c2ec06ff5b3eb86a Mon Sep 17 00:00:00 2001
From: Charlie Birks <charlie@daftgames.net>
Date: Tue, 29 Jan 2019 12:19:00 +0000
Subject: [PATCH] Emscripten: call emscripten_sample_gamepad_data

---
 src/joystick/emscripten/SDL_sysjoystick.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/joystick/emscripten/SDL_sysjoystick.c b/src/joystick/emscripten/SDL_sysjoystick.c
index cf9e7d96b..92b831a05 100644
--- a/src/joystick/emscripten/SDL_sysjoystick.c
+++ b/src/joystick/emscripten/SDL_sysjoystick.c
@@ -189,13 +189,16 @@ EMSCRIPTEN_JoystickInit(void)
     EmscriptenGamepadEvent gamepadState;
 
     numjoysticks = 0;
-    numjs = emscripten_get_num_gamepads();
+
+    retval = emscripten_sample_gamepad_data();
 
     /* Check if gamepad is supported by browser */
-    if (numjs == EMSCRIPTEN_RESULT_NOT_SUPPORTED) {
+    if (retval == EMSCRIPTEN_RESULT_NOT_SUPPORTED) {
         return SDL_SetError("Gamepads not supported");
     }
 
+    numjs = emscripten_get_num_gamepads();
+
     /* handle already connected gamepads */
     if (numjs > 0) {
         for(i = 0; i < numjs; i++) {
@@ -335,6 +338,8 @@ EMSCRIPTEN_JoystickUpdate(SDL_Joystick * joystick)
     SDL_joylist_item *item = (SDL_joylist_item *) joystick->hwdata;
     int i, result, buttonState;
 
+    emscripten_sample_gamepad_data();
+
     if (item) {
         result = emscripten_get_gamepad_status(item->index, &gamepadState);
         if( result == EMSCRIPTEN_RESULT_SUCCESS) {