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Sort the raw input axes by usage, so X comes before Y, etc.

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This commit is contained in:
Sam Lantinga 2020-11-27 11:33:53 -08:00
parent 4ddac485db
commit 4fbefbe20d
2 changed files with 15 additions and 10 deletions
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23
src/joystick/windows/SDL_rawinputjoystick.c
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@ -1032,6 +1032,16 @@ RAWINPUT_JoystickGetDeviceInstanceID(int device_index)
return RAWINPUT_GetDeviceByIndex(device_index)->joystick_id;
}
static int
RAWINPUT_SortValueCaps(const void *A, const void *B)
{
HIDP_VALUE_CAPS *capsA = (HIDP_VALUE_CAPS *)A;
HIDP_VALUE_CAPS *capsB = (HIDP_VALUE_CAPS *)B;
/* Sort by Usage for single values, or UsageMax for range of values */
return (int)capsA->NotRange.Usage - capsB->NotRange.Usage;
}
static int
RAWINPUT_JoystickOpen(SDL_Joystick *joystick, int device_index)
{
@ -1092,6 +1102,9 @@ RAWINPUT_JoystickOpen(SDL_Joystick *joystick, int device_index)
return SDL_SetError("Couldn't get device value capabilities");
}
/* Sort the axes by usage, so X comes before Y, etc. */
SDL_qsort(value_caps, caps.NumberInputValueCaps, sizeof(*value_caps), RAWINPUT_SortValueCaps);
for (i = 0; i < caps.NumberInputButtonCaps; ++i) {
HIDP_BUTTON_CAPS *cap = &button_caps[i];
@ -1360,20 +1373,12 @@ RAWINPUT_HandleStatePacket(SDL_Joystick *joystick, Uint8 *data, int size)
(1 << SDL_CONTROLLER_BUTTON_DPAD_LEFT),
(1 << SDL_CONTROLLER_BUTTON_DPAD_UP) | (1 << SDL_CONTROLLER_BUTTON_DPAD_LEFT),
};
#ifdef SDL_JOYSTICK_RAWINPUT_MATCH_AXES
static const int axis_map[] = {
SDL_CONTROLLER_AXIS_LEFTY,
SDL_CONTROLLER_AXIS_LEFTX,
SDL_CONTROLLER_AXIS_RIGHTY,
SDL_CONTROLLER_AXIS_RIGHTX
};
#endif
Uint32 match_state = ctx->match_state;
/* Update match_state with button bit, then fall through */
#define SDL_PrivateJoystickButton(joystick, button, state) if (button < SDL_arraysize(button_map)) { if (state) match_state |= 1 << button_map[button]; else match_state &= ~(1 << button_map[button]); } SDL_PrivateJoystickButton(joystick, button, state)
#ifdef SDL_JOYSTICK_RAWINPUT_MATCH_AXES
/* Grab high 4 bits of value, then fall through */
#define SDL_PrivateJoystickAxis(joystick, axis, value) if (axis < SDL_arraysize(axis_map)) match_state = (match_state & ~(0xF << (4 * axis_map[axis] + 16))) | ((value) & 0xF000) << (4 * axis_map[axis] + 4); SDL_PrivateJoystickAxis(joystick, axis, value)
#define SDL_PrivateJoystickAxis(joystick, axis, value) if (axis < 4) match_state = (match_state & ~(0xF << (4 * axis + 16))) | ((value) & 0xF000) << (4 * axis + 4); SDL_PrivateJoystickAxis(joystick, axis, value)
#endif
#endif /* SDL_JOYSTICK_RAWINPUT_MATCHING */