[PATCH 4/5] windows.gaming.input: Fix magnitude sign for constant and ramp effects.

[Rémi Bernon]

From: Rémi Bernon

The magnitude already carries the sign of X direction. Having a signed
direction will inverse the effective direction. The Y and Z direction
sign and magnitude seem to be ignored.
---
 dlls/dinput/tests/force_feedback.c         | 18 ------------------
 dlls/windows.gaming.input/force_feedback.c |  9 +++++++--
 2 files changed, 7 insertions(+), 20 deletions(-)

diff --git a/dlls/dinput/tests/force_feedback.c b/dlls/dinput/tests/force_feedback.c
index 6fdfa20c130..5ffc6a43471 100644
--- a/dlls/dinput/tests/force_feedback.c
+++ b/dlls/dinput/tests/force_feedback.c
@@ -5806,21 +5806,12 @@ static void test_windows_gaming_input(void)
             .report_len = 4,
             .report_buf = {9,0x01,0x18,0xfc},
         },
-        /* update effect (wine) */
-        {
-            .code = IOCTL_HID_WRITE_REPORT,
-            .report_id = 3,
-            .report_len = 18,
-            .report_buf = {3,0x01,0x04,0x04,0x28,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xff,0x7f,0x99,0x00,0x00,0x00},
-            .wine_only = TRUE, .todo = TRUE,
-        },
         /* update effect */
         {
             .code = IOCTL_HID_WRITE_REPORT,
             .report_id = 3,
             .report_len = 18,
             .report_buf = {3,0x01,0x04,0x04,0x28,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xff,0x7f,0x4e,0x01,0x00,0x00},
-            .todo = TRUE,
         },
     };
     struct hid_expect expect_create_ramp[] =
@@ -5915,21 +5906,12 @@ static void test_windows_gaming_input(void)
             .report_len = 6,
             .report_buf = {10,0x01,0x18,0xfc,0x60,0xf0},
         },
-        /* update effect (wine) */
-        {
-            .code = IOCTL_HID_WRITE_REPORT,
-            .report_id = 3,
-            .report_len = 18,
-            .report_buf = {3,0x01,0x05,0x04,0x8f,0xe4,0x00,0x00,0x00,0x00,0x00,0x00,0xff,0xff,0x99,0x00,0x00,0x00},
-            .wine_only = TRUE, .todo = TRUE,
-        },
         /* update effect */
         {
             .code = IOCTL_HID_WRITE_REPORT,
             .report_id = 3,
             .report_len = 18,
             .report_buf = {3,0x01,0x05,0x04,0xff,0xff,0x00,0x00,0x00,0x00,0x00,0x00,0xff,0xff,0x4e,0x01,0x00,0x00},
-            .todo = TRUE,
         },
     };
     struct hid_expect expect_effect_start =
diff --git a/dlls/windows.gaming.input/force_feedback.c b/dlls/windows.gaming.input/force_feedback.c
index 20b022ff317..cff3c184bf9 100644
--- a/dlls/windows.gaming.input/force_feedback.c
+++ b/dlls/windows.gaming.input/force_feedback.c
@@ -117,10 +117,12 @@ static int effect_reorient_direction( const WineForceFeedbackEffectParameters *p
     {
     case WineForceFeedbackEffectType_Constant:
         *direction = params->constant.direction;
+        sign = params->constant.direction.X < 0 ? -1 : +1;
         break;

case WineForceFeedbackEffectType_Ramp:
         *direction = params->ramp.start_vector;
+        sign = params->ramp.start_vector.X < 0 ? -1 : +1;
         break;

case WineForceFeedbackEffectType_Periodic_SineWave:
@@ -152,6 +154,7 @@ static HRESULT WINAPI effect_impl_put_Parameters( IWineForceFeedbackEffectImpl *
 {
     struct effect *impl = impl_from_IWineForceFeedbackEffectImpl( iface );
     Vector3 direction = {0};
+    double magnitude = 0;
     DWORD count = 0;
     HRESULT hr;
     int sign;
@@ -161,19 +164,21 @@ static HRESULT WINAPI effect_impl_put_Parameters( IWineForceFeedbackEffectImpl *
     EnterCriticalSection( &impl->cs );

sign = effect_reorient_direction( &params, &direction );
+    /* Y and Z axes seems to be always ignored, is it really the case? */
+    magnitude += direction.X * direction.X;

switch (params.type)
     {
     case WineForceFeedbackEffectType_Constant:
         impl->repeat_count = params.constant.repeat_count;
-        impl->constant_force.lMagnitude = -sign * round( params.constant.gain * direction.X * 10000 );
+        impl->constant_force.lMagnitude = sign * round( params.constant.gain * sqrt( magnitude ) * 10000 );
         impl->params.dwDuration = min( max( params.constant.duration.Duration / 10, 0 ), INFINITE );
         impl->params.dwStartDelay = min( max( params.constant.start_delay.Duration / 10, 0 ), INFINITE );
         break;

case WineForceFeedbackEffectType_Ramp:
         impl->repeat_count = params.ramp.repeat_count;
-        impl->ramp_force.lStart = -sign * round( params.ramp.gain * direction.X * 10000 );
+        impl->ramp_force.lStart = sign * round( params.ramp.gain * sqrt( magnitude ) * 10000 );
         impl->ramp_force.lEnd = round( params.ramp.gain * params.ramp.end_vector.X * 10000 );
         impl->params.dwDuration = min( max( params.ramp.duration.Duration / 10, 0 ), INFINITE );
         impl->params.dwStartDelay = min( max( params.ramp.start_delay.Duration / 10, 0 ), INFINITE );