From c32dc3a0856e339d8de582582fcbedec430e14b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Camilla=20L=C3=B6wy?= <elmindreda@glfw.org>
Date: Wed, 27 Mar 2019 20:31:32 +0100
Subject: [PATCH] Fix half-axis to gamepad button value mapping

Negative half-axes were not negated when mapped onto gamepad buttons.
---
 src/input.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/input.c b/src/input.c
index 680de6e5..a2ba1249 100644
--- a/src/input.c
+++ b/src/input.c
@@ -1258,8 +1258,18 @@ GLFWAPI int glfwGetGamepadState(int jid, GLFWgamepadstate* state)
         if (e->type == _GLFW_JOYSTICK_AXIS)
         {
             const float value = js->axes[e->index] * e->axisScale + e->axisOffset;
-            if (value > 0.f)
-                state->buttons[i] = GLFW_PRESS;
+            // HACK: This should be baked into the value transform
+            // TODO: Bake into transform when implementing output modifiers
+            if (e->axisScale < 0 || e->axisOffset < 0)
+            {
+                if (value > 0.f)
+                    state->buttons[i] = GLFW_PRESS;
+            }
+            else
+            {
+                if (value < 0.f)
+                    state->buttons[i] = GLFW_PRESS;
+            }
         }
         else if (e->type == _GLFW_JOYSTICK_HATBIT)
         {