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(DInput) Optimize array loop iterations

This commit is contained in:
twinaphex 2020-08-19 04:04:44 +02:00
parent 07244d484c
commit 2ca12718f1
1 changed files with 22 additions and 9 deletions
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31
input/drivers/dinput.c
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@ -185,14 +185,19 @@ static void *dinput_init(const char *joypad_driver)
static void dinput_poll(void *data) static void dinput_poll(void *data)
{ {
unsigned i;
struct dinput_input *di = (struct dinput_input*)data; struct dinput_input *di = (struct dinput_input*)data;
uint8_t *kb_state = NULL;
if (!di) if (!di)
return; return;
for (i = 0; i < 256; i++) kb_state = &di->state[0];
di->state[i] = 0;
for (
; kb_state < di->state + 256
; kb_state++)
*kb_state = 0;
if (di->keyboard) if (di->keyboard)
{ {
if (FAILED(IDirectInputDevice8_GetDeviceState( if (FAILED(IDirectInputDevice8_GetDeviceState(
@ -202,8 +207,10 @@ static void dinput_poll(void *data)
if (FAILED(IDirectInputDevice8_GetDeviceState( if (FAILED(IDirectInputDevice8_GetDeviceState(
di->keyboard, sizeof(di->state), di->state))) di->keyboard, sizeof(di->state), di->state)))
{ {
for (i = 0; i < 256; i++) for (
di->state[i] = 0; ; kb_state < di->state + 256
; kb_state++)
*kb_state = 0;
} }
} }
} }
@ -212,6 +219,7 @@ static void dinput_poll(void *data)
{ {
POINT point; POINT point;
DIMOUSESTATE2 mouse_state; DIMOUSESTATE2 mouse_state;
BYTE *rgb_buttons_ptr = &mouse_state.rgbButtons[0];
point.x = 0; point.x = 0;
point.y = 0; point.y = 0;
@ -219,8 +227,11 @@ static void dinput_poll(void *data)
mouse_state.lX = 0; mouse_state.lX = 0;
mouse_state.lY = 0; mouse_state.lY = 0;
mouse_state.lZ = 0; mouse_state.lZ = 0;
for (i = 0; i < 8; i++)
mouse_state.rgbButtons[i] = 0; for (
; rgb_buttons_ptr < mouse_state.rgbButtons + 8
; rgb_buttons_ptr++)
*rgb_buttons_ptr = 0;
if (FAILED(IDirectInputDevice8_GetDeviceState( if (FAILED(IDirectInputDevice8_GetDeviceState(
di->mouse, sizeof(mouse_state), &mouse_state))) di->mouse, sizeof(mouse_state), &mouse_state)))
@ -232,8 +243,10 @@ static void dinput_poll(void *data)
mouse_state.lX = 0; mouse_state.lX = 0;
mouse_state.lY = 0; mouse_state.lY = 0;
mouse_state.lZ = 0; mouse_state.lZ = 0;
for (i = 0; i < 8; i++) for (
mouse_state.rgbButtons[i] = 0; ; rgb_buttons_ptr < mouse_state.rgbButtons + 8
; rgb_buttons_ptr++)
*rgb_buttons_ptr = 0;
} }
} }