commit 9420e6f0d090f2f3fe61f71d5e05220f5245c861
author Camilla Löwy <elmindreda@glfw.org> Wed Mar 27 19:35:19 2019 +0100
committer Camilla Löwy <elmindreda@glfw.org> Wed Mar 27 19:35:19 2019 +0100
tree a01ed9809669cc7c6e0d22c4b0ba40479a86fb26
parent 980fc9b52f397ec54ce65f69abe9ff694622b4ab

Fix invalid ranges for gamepad axis sources

Buttons and hat bits were mapped to [0,1] instead of [-1,1].

Fixes #1293.

src/input.c

diff --git a/src/input.c b/src/input.c
index 7ee4281..680de6e 100644
--- a/src/input.c
+++ b/src/input.c
@@ -1286,9 +1286,11 @@
             const unsigned int bit = e->index & 0xf;
             if (js->hats[hat] & bit)
                 state->axes[i] = 1.f;
+            else
+                state->axes[i] = -1.f;
         }
         else if (e->type == _GLFW_JOYSTICK_BUTTON)
-            state->axes[i] = (float) js->buttons[e->index];
+            state->axes[i] = js->buttons[e->index] * 2.f - 1.f;
     }
 
     return GLFW_TRUE;