diff --git a/wiiu/input/wpad_driver.c b/wiiu/input/wpad_driver.c index fa552d2543..8b4e7e0032 100644 --- a/wiiu/input/wpad_driver.c +++ b/wiiu/input/wpad_driver.c @@ -86,18 +86,50 @@ static void apply_clamping(VPADTouchData *point, struct video_viewport *viewport } } -static void get_touch_coordinates(VPADTouchData *point, VPADStatus *vpad, bool *clamped) +static void get_touch_coordinates(VPADTouchData *point, VPADStatus *vpad, struct video_viewport *viewport, bool *clamped) { - struct video_viewport viewport = {0}; - - video_driver_get_viewport_info(&viewport); - get_calibrated_point(point, &viewport, vpad); - apply_clamping(point, &viewport, clamped); + get_calibrated_point(point, viewport, vpad); + apply_clamping(point, viewport, clamped); } +#if 0 +/** + * Get absolute value of a signed integer using bit manipulation. + */ +static int16_t bitwise_abs(int16_t value) +{ + bool is_negative = value & 0x8000; + if(!is_negative) + return value; + + value = value &~ 0x8000; + return (~value & 0x7fff)+1; +} + +/** + * printf doesn't have a concept of a signed hex digit, so we fake it. + */ +static void log_coords(int16_t x, int16_t y) +{ + bool x_negative = x & 0x8000; + bool y_negative = y & 0x8000; + + int16_t x_digit = bitwise_abs(x); + int16_t y_digit = bitwise_abs(y); + + RARCH_LOG("[wpad]: calibrated point: %s%04x, %s%04x\n", + x_negative ? "-" : "", + x_digit, + y_negative ? "-" : "", + y_digit); +} +#endif + static void update_touch_state(int16_t state[3][2], uint64_t *buttons, VPADStatus *vpad) { VPADTouchData point = {0}; + struct video_viewport viewport = {0}; + bool touch_clamped = false; if(!vpad->tpNormal.touched || vpad->tpNormal.validity != VPAD_VALID) @@ -106,10 +138,17 @@ static void update_touch_state(int16_t state[3][2], uint64_t *buttons, VPADStatu return; } - get_touch_coordinates(&point, vpad, &touch_clamped); + video_driver_get_viewport_info(&viewport); + get_touch_coordinates(&point, vpad, &viewport, &touch_clamped); + + state[WIIU_DEVICE_INDEX_TOUCHPAD][RETRO_DEVICE_ID_ANALOG_X] = scale_touchpad(viewport.x, viewport.x + viewport.width, -0x7fff, 0x7fff, point.x); + state[WIIU_DEVICE_INDEX_TOUCHPAD][RETRO_DEVICE_ID_ANALOG_Y] = scale_touchpad(viewport.y, viewport.y + viewport.height, -0x7fff, 0x7fff, point.y); + +#if 0 + log_coords(state[WIIU_DEVICE_INDEX_TOUCHPAD][RETRO_DEVICE_ID_ANALOG_X], + state[WIIU_DEVICE_INDEX_TOUCHPAD][RETRO_DEVICE_ID_ANALOG_Y]); +#endif - state[WIIU_DEVICE_INDEX_TOUCHPAD][RETRO_DEVICE_ID_ANALOG_X] = point.x; - state[WIIU_DEVICE_INDEX_TOUCHPAD][RETRO_DEVICE_ID_ANALOG_Y] = point.y; if(!touch_clamped) *buttons |= VPAD_BUTTON_TOUCH;