Initial Commit

1 files changed, 763 insertions, 0 deletions

diff --git a/glfw-3.2.1/src/win32_joystick.c b/glfw-3.2.1/src/win32_joystick.c
new file mode 100644
index 0000000..49f3b87
--- /dev/null
+++ b/glfw-3.2.1/src/win32_joystick.c
@@ -0,0 +1,763 @@
+//========================================================================
+// GLFW 3.1 Win32 - www.glfw.org
+//------------------------------------------------------------------------
+// Copyright (c) 2002-2006 Marcus Geelnard
+// Copyright (c) 2006-2016 Camilla Berglund <elmindreda@glfw.org>
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//    claim that you wrote the original software. If you use this software
+//    in a product, an acknowledgment in the product documentation would
+//    be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such, and must not
+//    be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source
+//    distribution.
+//
+//========================================================================
+
+#include "internal.h"
+
+#include <math.h>
+
+#include <initguid.h>
+
+#define _GLFW_PRESENCE_ONLY 1
+#define _GLFW_UPDATE_STATE  2
+
+#define _GLFW_TYPE_AXIS     0
+#define _GLFW_TYPE_SLIDER   1
+#define _GLFW_TYPE_BUTTON   2
+#define _GLFW_TYPE_POV      3
+
+// Data produced with DirectInput device object enumeration
+//
+typedef struct _GLFWobjenumWin32
+{
+    IDirectInputDevice8W*   device;
+    _GLFWjoyobjectWin32*    objects;
+    int                     objectCount;
+    int                     axisCount;
+    int                     sliderCount;
+    int                     buttonCount;
+    int                     povCount;
+} _GLFWobjenumWin32;
+
+// Define only the necessary GUIDs (it's bad enough that we're exporting these)
+//
+DEFINE_GUID(IID_IDirectInput8W,0xbf798031,0x483a,0x4da2,0xaa,0x99,0x5d,0x64,0xed,0x36,0x97,0x00);
+DEFINE_GUID(GUID_XAxis,0xa36d02e0,0xc9f3,0x11cf,0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00);
+DEFINE_GUID(GUID_YAxis,0xa36d02e1,0xc9f3,0x11cf,0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00);
+DEFINE_GUID(GUID_ZAxis,0xa36d02e2,0xc9f3,0x11cf,0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00);
+DEFINE_GUID(GUID_RxAxis,0xa36d02f4,0xc9f3,0x11cf,0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00);
+DEFINE_GUID(GUID_RyAxis,0xa36d02f5,0xc9f3,0x11cf,0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00);
+DEFINE_GUID(GUID_RzAxis,0xa36d02e3,0xc9f3,0x11cf,0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00);
+DEFINE_GUID(GUID_Slider,0xa36d02e4,0xc9f3,0x11cf,0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00);
+DEFINE_GUID(GUID_Button,0xa36d02f0,0xc9f3,0x11cf,0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00);
+DEFINE_GUID(GUID_POV,0xa36d02f2,0xc9f3,0x11cf,0xbf,0xc7,0x44,0x45,0x53,0x54,0x00,0x00);
+
+// Object data array for our clone of c_dfDIJoystick
+// Generated with https://github.com/elmindreda/c_dfDIJoystick2
+//
+static DIOBJECTDATAFORMAT _glfwObjectDataFormats[] =
+{
+    { &GUID_XAxis,DIJOFS_X,DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
+    { &GUID_YAxis,DIJOFS_Y,DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
+    { &GUID_ZAxis,DIJOFS_Z,DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
+    { &GUID_RxAxis,DIJOFS_RX,DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
+    { &GUID_RyAxis,DIJOFS_RY,DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
+    { &GUID_RzAxis,DIJOFS_RZ,DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
+    { &GUID_Slider,DIJOFS_SLIDER(0),DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
+    { &GUID_Slider,DIJOFS_SLIDER(1),DIDFT_AXIS|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,DIDOI_ASPECTPOSITION },
+    { &GUID_POV,DIJOFS_POV(0),DIDFT_POV|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { &GUID_POV,DIJOFS_POV(1),DIDFT_POV|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { &GUID_POV,DIJOFS_POV(2),DIDFT_POV|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { &GUID_POV,DIJOFS_POV(3),DIDFT_POV|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(0),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(1),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(2),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(3),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(4),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(5),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(6),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(7),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(8),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(9),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(10),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(11),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(12),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(13),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(14),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(15),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(16),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(17),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(18),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(19),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(20),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(21),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(22),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(23),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(24),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(25),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(26),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(27),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(28),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(29),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(30),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+    { NULL,DIJOFS_BUTTON(31),DIDFT_BUTTON|DIDFT_OPTIONAL|DIDFT_ANYINSTANCE,0 },
+};
+
+// Our clone of c_dfDIJoystick
+//
+static const DIDATAFORMAT _glfwDataFormat =
+{
+    sizeof(DIDATAFORMAT),
+    sizeof(DIOBJECTDATAFORMAT),
+    DIDFT_ABSAXIS,
+    sizeof(DIJOYSTATE),
+    sizeof(_glfwObjectDataFormats) / sizeof(DIOBJECTDATAFORMAT),
+    _glfwObjectDataFormats
+};
+
+// Returns a description fitting the specified XInput capabilities
+//
+static const char* getDeviceDescription(const XINPUT_CAPABILITIES* xic)
+{
+    switch (xic->SubType)
+    {
+        case XINPUT_DEVSUBTYPE_WHEEL:
+            return "XInput Wheel";
+        case XINPUT_DEVSUBTYPE_ARCADE_STICK:
+            return "XInput Arcade Stick";
+        case XINPUT_DEVSUBTYPE_FLIGHT_STICK:
+            return "XInput Flight Stick";
+        case XINPUT_DEVSUBTYPE_DANCE_PAD:
+            return "XInput Dance Pad";
+        case XINPUT_DEVSUBTYPE_GUITAR:
+            return "XInput Guitar";
+        case XINPUT_DEVSUBTYPE_DRUM_KIT:
+            return "XInput Drum Kit";
+        case XINPUT_DEVSUBTYPE_GAMEPAD:
+        {
+            if (xic->Flags & XINPUT_CAPS_WIRELESS)
+                return "Wireless Xbox 360 Controller";
+            else
+                return "Xbox 360 Controller";
+        }
+    }
+
+    return "Unknown XInput Device";
+}
+
+// Lexically compare device objects
+//
+static int compareJoystickObjects(const void* first, const void* second)
+{
+    const _GLFWjoyobjectWin32* fo = first;
+    const _GLFWjoyobjectWin32* so = second;
+
+    if (fo->type != so->type)
+        return fo->type - so->type;
+
+    return fo->offset - so->offset;
+}
+
+// Checks whether the specified device supports XInput
+// Technique from FDInputJoystickManager::IsXInputDeviceFast in ZDoom
+//
+static GLFWbool supportsXInput(const GUID* guid)
+{
+    UINT i, count = 0;
+    RAWINPUTDEVICELIST* ridl;
+    GLFWbool result = GLFW_FALSE;
+
+    if (GetRawInputDeviceList(NULL, &count, sizeof(RAWINPUTDEVICELIST)) != 0)
+        return GLFW_FALSE;
+
+    ridl = calloc(count, sizeof(RAWINPUTDEVICELIST));
+
+    if (GetRawInputDeviceList(ridl, &count, sizeof(RAWINPUTDEVICELIST)) == (UINT) -1)
+    {
+        free(ridl);
+        return GLFW_FALSE;
+    }
+
+    for (i = 0;  i < count;  i++)
+    {
+        RID_DEVICE_INFO rdi;
+        char name[256];
+        UINT size;
+
+        if (ridl[i].dwType != RIM_TYPEHID)
+            continue;
+
+        ZeroMemory(&rdi, sizeof(rdi));
+        rdi.cbSize = sizeof(rdi);
+        size = sizeof(rdi);
+
+        if ((INT) GetRawInputDeviceInfoA(ridl[i].hDevice,
+                                         RIDI_DEVICEINFO,
+                                         &rdi, &size) == -1)
+        {
+            continue;
+        }
+
+        if (MAKELONG(rdi.hid.dwVendorId, rdi.hid.dwProductId) != (LONG) guid->Data1)
+            continue;
+
+        memset(name, 0, sizeof(name));
+        size = sizeof(name);
+
+        if ((INT) GetRawInputDeviceInfoA(ridl[i].hDevice,
+                                         RIDI_DEVICENAME,
+                                         name, &size) == -1)
+        {
+            break;
+        }
+
+        name[sizeof(name) - 1] = '\0';
+        if (strstr(name, "IG_"))
+        {
+            result = GLFW_TRUE;
+            break;
+        }
+    }
+
+    free(ridl);
+    return result;
+}
+
+// Frees all resources associated with the specified joystick
+//
+static void closeJoystick(_GLFWjoystickWin32* js)
+{
+    if (js->device)
+    {
+        IDirectInputDevice8_Unacquire(js->device);
+        IDirectInputDevice8_Release(js->device);
+    }
+
+    free(js->name);
+    free(js->axes);
+    free(js->buttons);
+    free(js->objects);
+    memset(js, 0, sizeof(_GLFWjoystickWin32));
+
+    _glfwInputJoystickChange((int) (js - _glfw.win32_js), GLFW_DISCONNECTED);
+}
+
+// DirectInput device object enumeration callback
+// Insights gleaned from SDL2
+//
+static BOOL CALLBACK deviceObjectCallback(const DIDEVICEOBJECTINSTANCEW* doi,
+                                          void* user)
+{
+    _GLFWobjenumWin32* data = user;
+    _GLFWjoyobjectWin32* object = data->objects + data->objectCount;
+
+    if (DIDFT_GETTYPE(doi->dwType) & DIDFT_AXIS)
+    {
+        DIPROPRANGE dipr;
+
+        if (memcmp(&doi->guidType, &GUID_Slider, sizeof(GUID)) == 0)
+            object->offset = DIJOFS_SLIDER(data->sliderCount);
+        else if (memcmp(&doi->guidType, &GUID_XAxis, sizeof(GUID)) == 0)
+            object->offset = DIJOFS_X;
+        else if (memcmp(&doi->guidType, &GUID_YAxis, sizeof(GUID)) == 0)
+            object->offset = DIJOFS_Y;
+        else if (memcmp(&doi->guidType, &GUID_ZAxis, sizeof(GUID)) == 0)
+            object->offset = DIJOFS_Z;
+        else if (memcmp(&doi->guidType, &GUID_RxAxis, sizeof(GUID)) == 0)
+            object->offset = DIJOFS_RX;
+        else if (memcmp(&doi->guidType, &GUID_RyAxis, sizeof(GUID)) == 0)
+            object->offset = DIJOFS_RY;
+        else if (memcmp(&doi->guidType, &GUID_RzAxis, sizeof(GUID)) == 0)
+            object->offset = DIJOFS_RZ;
+        else
+            return DIENUM_CONTINUE;
+
+        ZeroMemory(&dipr, sizeof(dipr));
+        dipr.diph.dwSize = sizeof(dipr);
+        dipr.diph.dwHeaderSize = sizeof(dipr.diph);
+        dipr.diph.dwObj = doi->dwType;
+        dipr.diph.dwHow = DIPH_BYID;
+        dipr.lMin = -32768;
+        dipr.lMax =  32767;
+
+        if (FAILED(IDirectInputDevice8_SetProperty(data->device,
+                                                   DIPROP_RANGE,
+                                                   &dipr.diph)))
+        {
+            return DIENUM_CONTINUE;
+        }
+
+        if (memcmp(&doi->guidType, &GUID_Slider, sizeof(GUID)) == 0)
+        {
+            object->type = _GLFW_TYPE_SLIDER;
+            data->sliderCount++;
+        }
+        else
+        {
+            object->type = _GLFW_TYPE_AXIS;
+            data->axisCount++;
+        }
+    }
+    else if (DIDFT_GETTYPE(doi->dwType) & DIDFT_BUTTON)
+    {
+        object->offset = DIJOFS_BUTTON(data->buttonCount);
+        object->type = _GLFW_TYPE_BUTTON;
+        data->buttonCount++;
+    }
+    else if (DIDFT_GETTYPE(doi->dwType) & DIDFT_POV)
+    {
+        object->offset = DIJOFS_POV(data->povCount);
+        object->type = _GLFW_TYPE_POV;
+        data->povCount++;
+    }
+
+    data->objectCount++;
+    return DIENUM_CONTINUE;
+}
+
+// DirectInput device enumeration callback
+//
+static BOOL CALLBACK deviceCallback(const DIDEVICEINSTANCE* di, void* user)
+{
+    int joy = 0;
+    DIDEVCAPS dc;
+    DIPROPDWORD dipd;
+    IDirectInputDevice8* device;
+    _GLFWobjenumWin32 data;
+    _GLFWjoystickWin32* js;
+
+    for (joy = GLFW_JOYSTICK_1;  joy <= GLFW_JOYSTICK_LAST;  joy++)
+    {
+        if (memcmp(&_glfw.win32_js[joy].guid, &di->guidInstance, sizeof(GUID)) == 0)
+            return DIENUM_CONTINUE;
+    }
+
+    for (joy = GLFW_JOYSTICK_1;  joy <= GLFW_JOYSTICK_LAST;  joy++)
+    {
+        if (!_glfw.win32_js[joy].present)
+            break;
+    }
+
+    if (joy > GLFW_JOYSTICK_LAST)
+        return DIENUM_STOP;
+
+    if (supportsXInput(&di->guidProduct))
+        return DIENUM_CONTINUE;
+
+    if (FAILED(IDirectInput8_CreateDevice(_glfw.win32.dinput8.api,
+                                          &di->guidInstance,
+                                          &device,
+                                          NULL)))
+    {
+        _glfwInputError(GLFW_PLATFORM_ERROR, "DI: Failed to create device");
+        return DIENUM_CONTINUE;
+    }
+
+    if (FAILED(IDirectInputDevice8_SetDataFormat(device, &_glfwDataFormat)))
+    {
+        _glfwInputError(GLFW_PLATFORM_ERROR,
+                        "DI: Failed to set device data format");
+
+        IDirectInputDevice8_Release(device);
+        return DIENUM_CONTINUE;
+    }
+
+    ZeroMemory(&dc, sizeof(dc));
+    dc.dwSize = sizeof(dc);
+
+    if (FAILED(IDirectInputDevice8_GetCapabilities(device, &dc)))
+    {
+        _glfwInputError(GLFW_PLATFORM_ERROR,
+                        "DI: Failed to query device capabilities");
+
+        IDirectInputDevice8_Release(device);
+        return DIENUM_CONTINUE;
+    }
+
+    ZeroMemory(&dipd, sizeof(dipd));
+    dipd.diph.dwSize = sizeof(dipd);
+    dipd.diph.dwHeaderSize = sizeof(dipd.diph);
+    dipd.diph.dwHow = DIPH_DEVICE;
+    dipd.dwData = DIPROPAXISMODE_ABS;
+
+    if (FAILED(IDirectInputDevice8_SetProperty(device,
+                                               DIPROP_AXISMODE,
+                                               &dipd.diph)))
+    {
+        _glfwInputError(GLFW_PLATFORM_ERROR,
+                        "DI: Failed to set device axis mode");
+
+        IDirectInputDevice8_Release(device);
+        return DIENUM_CONTINUE;
+    }
+
+    memset(&data, 0, sizeof(data));
+    data.device = device;
+    data.objects = calloc(dc.dwAxes + dc.dwButtons + dc.dwPOVs,
+                          sizeof(_GLFWjoyobjectWin32));
+
+    if (FAILED(IDirectInputDevice8_EnumObjects(device,
+                                               deviceObjectCallback,
+                                               &data,
+                                               DIDFT_AXIS | DIDFT_BUTTON | DIDFT_POV)))
+    {
+        _glfwInputError(GLFW_PLATFORM_ERROR,
+                        "DI: Failed to enumerate device objects");
+
+        IDirectInputDevice8_Release(device);
+        free(data.objects);
+        return DIENUM_CONTINUE;
+    }
+
+    qsort(data.objects, data.objectCount,
+          sizeof(_GLFWjoyobjectWin32),
+          compareJoystickObjects);
+
+    js = _glfw.win32_js + joy;
+    js->device = device;
+    js->guid = di->guidInstance;
+    js->axisCount = data.axisCount + data.sliderCount;
+    js->axes = calloc(js->axisCount, sizeof(float));
+    js->buttonCount += data.buttonCount + data.povCount * 4;
+    js->buttons = calloc(js->buttonCount, 1);
+    js->objects = data.objects;
+    js->objectCount = data.objectCount;
+    js->name = _glfwCreateUTF8FromWideStringWin32(di->tszInstanceName);
+    js->present = GLFW_TRUE;
+
+    _glfwInputJoystickChange(joy, GLFW_CONNECTED);
+    return DIENUM_CONTINUE;
+}
+
+// Attempt to open the specified joystick device
+// TODO: Pack state arrays for non-gamepad devices
+//
+static GLFWbool openXinputDevice(DWORD index)
+{
+    int joy;
+    XINPUT_CAPABILITIES xic;
+    _GLFWjoystickWin32* js;
+
+    for (joy = GLFW_JOYSTICK_1;  joy <= GLFW_JOYSTICK_LAST;  joy++)
+    {
+        if (_glfw.win32_js[joy].present &&
+            _glfw.win32_js[joy].device == NULL &&
+            _glfw.win32_js[joy].index == index)
+        {
+            return GLFW_FALSE;
+        }
+    }
+
+    for (joy = GLFW_JOYSTICK_1;  joy <= GLFW_JOYSTICK_LAST;  joy++)
+    {
+        if (!_glfw.win32_js[joy].present)
+            break;
+    }
+
+    if (joy > GLFW_JOYSTICK_LAST)
+        return GLFW_FALSE;
+
+    if (_glfw_XInputGetCapabilities(index, 0, &xic) != ERROR_SUCCESS)
+        return GLFW_FALSE;
+
+    js = _glfw.win32_js + joy;
+    js->axisCount = 6;
+    js->axes = calloc(js->axisCount, sizeof(float));
+    js->buttonCount = 14;
+    js->buttons = calloc(js->buttonCount, 1);
+    js->present = GLFW_TRUE;
+    js->name = strdup(getDeviceDescription(&xic));
+    js->index = index;
+
+    _glfwInputJoystickChange(joy, GLFW_CONNECTED);
+
+    return GLFW_TRUE;
+}
+
+// Polls for and processes events the specified joystick
+//
+static GLFWbool pollJoystickState(_GLFWjoystickWin32* js, int mode)
+{
+    if (!js->present)
+        return GLFW_FALSE;
+
+    if (js->device)
+    {
+        int i, j, ai = 0, bi = 0;
+        HRESULT result;
+        DIJOYSTATE state;
+
+        IDirectInputDevice8_Poll(js->device);
+        result = IDirectInputDevice8_GetDeviceState(js->device,
+                                                    sizeof(state),
+                                                    &state);
+        if (result == DIERR_NOTACQUIRED || result == DIERR_INPUTLOST)
+        {
+            IDirectInputDevice8_Acquire(js->device);
+            IDirectInputDevice8_Poll(js->device);
+            result = IDirectInputDevice8_GetDeviceState(js->device,
+                                                        sizeof(state),
+                                                        &state);
+        }
+
+        if (FAILED(result))
+        {
+            closeJoystick(js);
+            return GLFW_FALSE;
+        }
+
+        if (mode == _GLFW_PRESENCE_ONLY)
+            return GLFW_TRUE;
+
+        for (i = 0;  i < js->objectCount;  i++)
+        {
+            const void* data = (char*) &state + js->objects[i].offset;
+
+            switch (js->objects[i].type)
+            {
+                case _GLFW_TYPE_AXIS:
+                case _GLFW_TYPE_SLIDER:
+                {
+                    js->axes[ai++] = (*((LONG*) data) + 0.5f) / 32767.5f;
+                    break;
+                }
+
+                case _GLFW_TYPE_BUTTON:
+                {
+                    if (*((BYTE*) data) & 0x80)
+                        js->buttons[bi++] = GLFW_PRESS;
+                    else
+                        js->buttons[bi++] = GLFW_RELEASE;
+
+                    break;
+                }
+
+                case _GLFW_TYPE_POV:
+                {
+                    const int directions[9] = { 1, 3, 2, 6, 4, 12, 8, 9, 0 };
+                    // Screams of horror are appropriate at this point
+                    int value = LOWORD(*(DWORD*) data) / (45 * DI_DEGREES);
+                    if (value < 0 || value > 8)
+                        value = 8;
+
+                    for (j = 0;  j < 4;  j++)
+                    {
+                        if (directions[value] & (1 << j))
+                            js->buttons[bi++] = GLFW_PRESS;
+                        else
+                            js->buttons[bi++] = GLFW_RELEASE;
+                    }
+
+                    break;
+                }
+            }
+        }
+
+        return GLFW_TRUE;
+    }
+    else
+    {
+        int i;
+        DWORD result;
+        XINPUT_STATE xis;
+        const WORD buttons[14] =
+        {
+            XINPUT_GAMEPAD_A,
+            XINPUT_GAMEPAD_B,
+            XINPUT_GAMEPAD_X,
+            XINPUT_GAMEPAD_Y,
+            XINPUT_GAMEPAD_LEFT_SHOULDER,
+            XINPUT_GAMEPAD_RIGHT_SHOULDER,
+            XINPUT_GAMEPAD_BACK,
+            XINPUT_GAMEPAD_START,
+            XINPUT_GAMEPAD_LEFT_THUMB,
+            XINPUT_GAMEPAD_RIGHT_THUMB,
+            XINPUT_GAMEPAD_DPAD_UP,
+            XINPUT_GAMEPAD_DPAD_RIGHT,
+            XINPUT_GAMEPAD_DPAD_DOWN,
+            XINPUT_GAMEPAD_DPAD_LEFT
+        };
+
+        result = _glfw_XInputGetState(js->index, &xis);
+        if (result != ERROR_SUCCESS)
+        {
+            if (result == ERROR_DEVICE_NOT_CONNECTED)
+                closeJoystick(js);
+
+            return GLFW_FALSE;
+        }
+
+        if (mode == _GLFW_PRESENCE_ONLY)
+            return GLFW_TRUE;
+
+        if (sqrt((double) (xis.Gamepad.sThumbLX * xis.Gamepad.sThumbLX +
+                           xis.Gamepad.sThumbLY * xis.Gamepad.sThumbLY)) >
+            (double) XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE)
+        {
+            js->axes[0] = (xis.Gamepad.sThumbLX + 0.5f) / 32767.f;
+            js->axes[1] = (xis.Gamepad.sThumbLY + 0.5f) / 32767.f;
+        }
+        else
+        {
+            js->axes[0] = 0.f;
+            js->axes[1] = 0.f;
+        }
+
+        if (sqrt((double) (xis.Gamepad.sThumbRX * xis.Gamepad.sThumbRX +
+                           xis.Gamepad.sThumbRY * xis.Gamepad.sThumbRY)) >
+            (double) XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE)
+        {
+            js->axes[2] = (xis.Gamepad.sThumbRX + 0.5f) / 32767.f;
+            js->axes[3] = (xis.Gamepad.sThumbRY + 0.5f) / 32767.f;
+        }
+        else
+        {
+            js->axes[2] = 0.f;
+            js->axes[3] = 0.f;
+        }
+
+        if (xis.Gamepad.bLeftTrigger > XINPUT_GAMEPAD_TRIGGER_THRESHOLD)
+            js->axes[4] = xis.Gamepad.bLeftTrigger / 127.5f - 1.f;
+        else
+            js->axes[4] = -1.f;
+
+        if (xis.Gamepad.bRightTrigger > XINPUT_GAMEPAD_TRIGGER_THRESHOLD)
+            js->axes[5] = xis.Gamepad.bRightTrigger / 127.5f - 1.f;
+        else
+            js->axes[5] = -1.f;
+
+        for (i = 0;  i < 14;  i++)
+            js->buttons[i] = (xis.Gamepad.wButtons & buttons[i]) ? 1 : 0;
+
+        return GLFW_TRUE;
+    }
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+//////                       GLFW internal API                      //////
+//////////////////////////////////////////////////////////////////////////
+
+// Initialize joystick interface
+//
+void _glfwInitJoysticksWin32(void)
+{
+    if (_glfw.win32.dinput8.instance)
+    {
+        if (FAILED(_glfw_DirectInput8Create(GetModuleHandle(NULL),
+                                            DIRECTINPUT_VERSION,
+                                            &IID_IDirectInput8W,
+                                            (void**) &_glfw.win32.dinput8.api,
+                                            NULL)))
+        {
+            _glfwInputError(GLFW_PLATFORM_ERROR,
+                            "DI: Failed to create interface");
+        }
+    }
+
+    _glfwDetectJoystickConnectionWin32();
+}
+
+// Close all opened joystick handles
+//
+void _glfwTerminateJoysticksWin32(void)
+{
+    int joy;
+
+    for (joy = GLFW_JOYSTICK_1;  joy <= GLFW_JOYSTICK_LAST;  joy++)
+        closeJoystick(_glfw.win32_js + joy);
+
+    if (_glfw.win32.dinput8.api)
+        IDirectInput8_Release(_glfw.win32.dinput8.api);
+}
+
+// Checks for new joysticks after DBT_DEVICEARRIVAL
+//
+void _glfwDetectJoystickConnectionWin32(void)
+{
+    if (_glfw.win32.xinput.instance)
+    {
+        DWORD i;
+
+        for (i = 0;  i < XUSER_MAX_COUNT;  i++)
+            openXinputDevice(i);
+    }
+
+    if (_glfw.win32.dinput8.api)
+    {
+        if (FAILED(IDirectInput8_EnumDevices(_glfw.win32.dinput8.api,
+                                             DI8DEVCLASS_GAMECTRL,
+                                             deviceCallback,
+                                             NULL,
+                                             DIEDFL_ALLDEVICES)))
+        {
+            _glfwInputError(GLFW_PLATFORM_ERROR,
+                            "Failed to enumerate DirectInput8 devices");
+            return;
+        }
+    }
+}
+
+// Checks for joystick disconnection after DBT_DEVICEREMOVECOMPLETE
+//
+void _glfwDetectJoystickDisconnectionWin32(void)
+{
+    int joy;
+
+    for (joy = GLFW_JOYSTICK_1;  joy <= GLFW_JOYSTICK_LAST;  joy++)
+        pollJoystickState(_glfw.win32_js + joy, _GLFW_PRESENCE_ONLY);
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+//////                       GLFW platform API                      //////
+//////////////////////////////////////////////////////////////////////////
+
+int _glfwPlatformJoystickPresent(int joy)
+{
+    _GLFWjoystickWin32* js = _glfw.win32_js + joy;
+    return pollJoystickState(js, _GLFW_PRESENCE_ONLY);
+}
+
+const float* _glfwPlatformGetJoystickAxes(int joy, int* count)
+{
+    _GLFWjoystickWin32* js = _glfw.win32_js + joy;
+    if (!pollJoystickState(js, _GLFW_UPDATE_STATE))
+        return NULL;
+
+    *count = js->axisCount;
+    return js->axes;
+}
+
+const unsigned char* _glfwPlatformGetJoystickButtons(int joy, int* count)
+{
+    _GLFWjoystickWin32* js = _glfw.win32_js + joy;
+    if (!pollJoystickState(js, _GLFW_UPDATE_STATE))
+        return NULL;
+
+    *count = js->buttonCount;
+    return js->buttons;
+}
+
+const char* _glfwPlatformGetJoystickName(int joy)
+{
+    _GLFWjoystickWin32* js = _glfw.win32_js + joy;
+    if (!pollJoystickState(js, _GLFW_PRESENCE_ONLY))
+        return NULL;
+
+    return js->name;
+}
+