a-game

commit 37aa6660f10d03de812a8be52781024cf9fc72a8
parent e39c05aa093cdef610e327ca3b1f62db11be9d18
Author: Amin Mesbah <dev@aminmesbah.com>
Date:   Tue, 19 Nov 2019 21:53:42 -0800

Add comment about GLFW input bug and its effects

The culmination of multiple hours of debuggig my software and hardware
and questioning my sanity.

Diffstat:
M
src/platform_linux.c
 | 
16
++++++++++++++++

1 file changed, 16 insertions(+), 0 deletions(-)
diff --git a/src/platform_linux.c b/src/platform_linux.c
@@ -130,6 +130,22 @@ int main(void)
 
         // TODO: Do something sane when vsync is disabled
         glfwSwapBuffers(window);
+
+        // ಠ_ಠ: We are affected here by a GLFW bug [1]. On my Thinkpad X220, if
+        // I use the built-in keyboard, simultaneous key events sometimes get
+        // dropped. This causes, for example, a press of the jump key to often
+        // not be registered when the left or right arrow key is pressed
+        // simultaneously.
+        //
+        // If I plug in my beloved Leopold FC750R, the problem does not
+        // manifest.
+        //
+        // I have reproduced this behavior using glfw/tests/events.c
+        //
+        // TODO: Ditch GLFW on Linux, hope this gets fixed soon, or build it
+        // from source and apply the workaround discussed in [1].
+        //
+        // [1] https://github.com/glfw/glfw/issues/1112
         glfwPollEvents();
     }