Stefan Dösinger : ddraw: Map ZBIAS values to a smaller depth range.
Alexandre Julliard
julliard at winehq.org
Tue May 10 13:33:39 CDT 2011
Module: wine
Branch: master
Commit: a1519e62f47f2dfa54ca526ee718fe8a936593f2
URL: http://source.winehq.org/git/wine.git/?a=commit;h=a1519e62f47f2dfa54ca526ee718fe8a936593f2
Author: Stefan Dösinger <stefan at codeweavers.com>
Date: Sun May 8 17:23:14 2011 +0200
ddraw: Map ZBIAS values to a smaller depth range.
---
dlls/ddraw/device.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/dlls/ddraw/device.c b/dlls/ddraw/device.c
index 001dff3..d31a629 100644
--- a/dlls/ddraw/device.c
+++ b/dlls/ddraw/device.c
@@ -2249,6 +2249,8 @@ static HRESULT WINAPI IDirect3DDeviceImpl_2_End(IDirect3DDevice2 *iface, DWORD d
* DDERR_INVALIDPARAMS if Value == NULL
*
*****************************************************************************/
+static const float zbias_factor = -0.000005f;
+
static HRESULT
IDirect3DDeviceImpl_7_GetRenderState(IDirect3DDevice7 *iface,
D3DRENDERSTATETYPE RenderStateType,
@@ -2383,7 +2385,7 @@ IDirect3DDeviceImpl_7_GetRenderState(IDirect3DDevice7 *iface,
hr = IWineD3DDevice_GetRenderState(This->wineD3DDevice,
WINED3DRS_DEPTHBIAS,
&wined3d_value.d);
- if (SUCCEEDED(hr)) *Value = -wined3d_value.f * 16.0f;
+ if (SUCCEEDED(hr)) *Value = wined3d_value.f / zbias_factor;
break;
}
@@ -2708,7 +2710,7 @@ IDirect3DDeviceImpl_7_SetRenderState(IDirect3DDevice7 *iface,
DWORD d;
float f;
} wined3d_value;
- wined3d_value.f = Value / -16.0;
+ wined3d_value.f = Value * zbias_factor;
hr = IWineD3DDevice_SetRenderState(This->wineD3DDevice,
WINED3DRS_DEPTHBIAS,
wined3d_value.d);
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