diff --git a/miniwin/include/miniwin/d3drm.h b/miniwin/include/miniwin/d3drm.h
index a77b1ca3..28260a41 100644
--- a/miniwin/include/miniwin/d3drm.h
+++ b/miniwin/include/miniwin/d3drm.h
@@ -318,7 +318,7 @@ struct IDirect3DRMDevice : virtual public IDirect3DRMObject {
 	virtual HRESULT SetBufferCount(int count) = 0;
 	virtual DWORD GetBufferCount() = 0;
 	virtual HRESULT SetShades(DWORD shadeCount) = 0;
-	virtual HRESULT GetShades() = 0;
+	virtual DWORD GetShades() = 0;
 	virtual HRESULT SetQuality(D3DRMRENDERQUALITY quality) = 0;
 	virtual D3DRMRENDERQUALITY GetQuality() = 0;
 	virtual HRESULT SetDither(BOOL dither) = 0;
diff --git a/miniwin/include/miniwin/ddraw.h b/miniwin/include/miniwin/ddraw.h
index 7b403259..fedabab4 100644
--- a/miniwin/include/miniwin/ddraw.h
+++ b/miniwin/include/miniwin/ddraw.h
@@ -252,6 +252,7 @@ struct DDPIXELFORMAT {
 	DWORD dwRBitMask;    // Red bit mask (0xF800)
 	DWORD dwGBitMask;    // Green bit mask (0x07E0)
 	DWORD dwBBitMask;    // Blue bit mask (0x001F)
+	DWORD dwRGBAlphaBitMask;
 };
 typedef struct DDPIXELFORMAT* LPDDPIXELFORMAT;
 
diff --git a/miniwin/src/d3drm/d3drmdevice.cpp b/miniwin/src/d3drm/d3drmdevice.cpp
index 67857bd7..be850823 100644
--- a/miniwin/src/d3drm/d3drmdevice.cpp
+++ b/miniwin/src/d3drm/d3drmdevice.cpp
@@ -67,31 +67,35 @@ DWORD Direct3DRMDevice2Impl::GetBufferCount()
 
 HRESULT Direct3DRMDevice2Impl::SetShades(DWORD shadeCount)
 {
-	MINIWIN_NOT_IMPLEMENTED();
+	if (shadeCount != 256) {
+		MINIWIN_NOT_IMPLEMENTED();
+	}
 	return DD_OK;
 }
 
-HRESULT Direct3DRMDevice2Impl::GetShades()
+DWORD Direct3DRMDevice2Impl::GetShades()
 {
-	MINIWIN_NOT_IMPLEMENTED();
-	return DD_OK;
+	return 256;
 }
 
 HRESULT Direct3DRMDevice2Impl::SetQuality(D3DRMRENDERQUALITY quality)
 {
-	MINIWIN_NOT_IMPLEMENTED();
+	if (quality != D3DRMRENDER_GOURAUD && quality != D3DRMRENDER_PHONG) {
+		MINIWIN_NOT_IMPLEMENTED();
+	}
 	return DD_OK;
 }
 
 D3DRMRENDERQUALITY Direct3DRMDevice2Impl::GetQuality()
 {
-	MINIWIN_NOT_IMPLEMENTED();
 	return D3DRMRENDERQUALITY::GOURAUD;
 }
 
 HRESULT Direct3DRMDevice2Impl::SetDither(BOOL dither)
 {
-	MINIWIN_NOT_IMPLEMENTED();
+	if (dither) {
+		MINIWIN_NOT_IMPLEMENTED();
+	}
 	return DD_OK;
 }
 
diff --git a/miniwin/src/ddraw/ddraw.cpp b/miniwin/src/ddraw/ddraw.cpp
index fc81ddd3..6789c5c4 100644
--- a/miniwin/src/ddraw/ddraw.cpp
+++ b/miniwin/src/ddraw/ddraw.cpp
@@ -182,6 +182,7 @@ HRESULT DirectDrawImpl::EnumDisplayModes(
 		ddsd.ddpfPixelFormat.dwRBitMask = details->Rmask;
 		ddsd.ddpfPixelFormat.dwGBitMask = details->Gmask;
 		ddsd.ddpfPixelFormat.dwBBitMask = details->Bmask;
+		ddsd.ddpfPixelFormat.dwRGBAlphaBitMask = details->Amask;
 
 		if (!lpEnumModesCallback(&ddsd, lpContext)) {
 			status = DDERR_GENERIC;
@@ -270,6 +271,7 @@ HRESULT DirectDrawImpl::GetDisplayMode(LPDDSURFACEDESC lpDDSurfaceDesc)
 	lpDDSurfaceDesc->ddpfPixelFormat.dwRBitMask = details->Rmask;
 	lpDDSurfaceDesc->ddpfPixelFormat.dwGBitMask = details->Gmask;
 	lpDDSurfaceDesc->ddpfPixelFormat.dwBBitMask = details->Bmask;
+	lpDDSurfaceDesc->ddpfPixelFormat.dwRGBAlphaBitMask = details->Amask;
 
 	return DD_OK;
 }
diff --git a/miniwin/src/ddraw/ddsurface.cpp b/miniwin/src/ddraw/ddsurface.cpp
index 7a767e87..6424e826 100644
--- a/miniwin/src/ddraw/ddsurface.cpp
+++ b/miniwin/src/ddraw/ddsurface.cpp
@@ -210,6 +210,7 @@ HRESULT DirectDrawSurfaceImpl::GetPixelFormat(LPDDPIXELFORMAT lpDDPixelFormat)
 	lpDDPixelFormat->dwRBitMask = details->Rmask;
 	lpDDPixelFormat->dwGBitMask = details->Gmask;
 	lpDDPixelFormat->dwBBitMask = details->Bmask;
+	lpDDPixelFormat->dwRGBAlphaBitMask = details->Amask;
 	return DD_OK;
 }
 
diff --git a/miniwin/src/internal/d3drmdevice_impl.h b/miniwin/src/internal/d3drmdevice_impl.h
index 7c0187cc..ad30f75a 100644
--- a/miniwin/src/internal/d3drmdevice_impl.h
+++ b/miniwin/src/internal/d3drmdevice_impl.h
@@ -16,7 +16,7 @@ struct Direct3DRMDevice2Impl : public Direct3DRMObjectBaseImpl<IDirect3DRMDevice
 	HRESULT SetBufferCount(int count) override;
 	DWORD GetBufferCount() override;
 	HRESULT SetShades(DWORD shadeCount) override;
-	HRESULT GetShades() override;
+	DWORD GetShades() override;
 	HRESULT SetQuality(D3DRMRENDERQUALITY quality) override;
 	D3DRMRENDERQUALITY GetQuality() override;
 	HRESULT SetDither(BOOL dither) override;