d3dx9: Implement Begin and End methods.

dlls/d3dx9_36/line.c

@@ -29,6 +29,7 @@ typedef struct ID3DXLineImpl {
     LONG ref;
 
     IDirect3DDevice9 *device;
+    IDirect3DStateBlock9 *state;
 } ID3DXLineImpl;
 
 static inline ID3DXLineImpl *impl_from_ID3DXLine(ID3DXLine *iface)
@@ -100,9 +101,62 @@ static HRESULT WINAPI ID3DXLineImpl_Begin(ID3DXLine* iface)
 {
     ID3DXLineImpl *This = impl_from_ID3DXLine(iface);
 
-    FIXME("(%p)->(): stub\n", This);
+    HRESULT hr;
+    D3DXMATRIX identity, projection;
+    D3DVIEWPORT9 vp;
 
-    return E_NOTIMPL;
+    TRACE ("(%p)->()\n", This);
+
+    if (This->state != NULL) /* We already began. Return error. */
+        return D3DERR_INVALIDCALL;
+
+    hr = IDirect3DDevice9_CreateStateBlock(This->device, D3DSBT_ALL, &This->state);
+    if (FAILED(hr)) return D3DXERR_INVALIDDATA;
+
+    hr = IDirect3DDevice9_GetViewport(This->device, &vp);
+    if (FAILED(hr)) goto failed;
+
+    D3DXMatrixIdentity(&identity);
+    D3DXMatrixOrthoOffCenterLH(&projection,
+                               0.0, vp.Width, /* Min and max x */
+                               vp.Height, 0.0, /* Min and max y. Screen y is on top so this is inverted */
+                               0.0, 1.0); /* Min and max z */
+
+    hr = IDirect3DDevice9_SetTransform(This->device, D3DTS_WORLD, &identity);
+    if (FAILED(hr)) goto failed;
+
+    hr = IDirect3DDevice9_SetTransform(This->device, D3DTS_VIEW, &identity);
+    if (FAILED(hr)) goto failed;
+
+    hr = IDirect3DDevice9_SetTransform(This->device, D3DTS_PROJECTION, &projection);
+    if (FAILED(hr)) goto failed;
+
+    /* Windows sets similar states so we do the same */
+
+    hr = IDirect3DDevice9_SetRenderState(This->device, D3DRS_LIGHTING, FALSE);
+    if (FAILED(hr)) goto failed;
+
+    hr = IDirect3DDevice9_SetRenderState(This->device, D3DRS_FOGENABLE, FALSE);
+    if (FAILED(hr)) goto failed;
+
+    hr = IDirect3DDevice9_SetRenderState(This->device, D3DRS_SHADEMODE, D3DSHADE_FLAT);
+    if (FAILED(hr)) goto failed;
+
+    hr = IDirect3DDevice9_SetRenderState(This->device, D3DRS_ALPHABLENDENABLE, TRUE);
+    if (FAILED(hr)) goto failed;
+
+    hr = IDirect3DDevice9_SetRenderState(This->device, D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
+    if (FAILED(hr)) goto failed;
+
+    hr = IDirect3DDevice9_SetRenderState(This->device, D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA);
+    if (FAILED(hr)) goto failed;
+
+    return D3D_OK;
+failed:
+    IDirect3DStateBlock9_Apply(This->state);
+    IDirect3DStateBlock9_Release(This->state);
+    This->state = NULL;
+    return D3DXERR_INVALIDDATA;
 }
 
 static HRESULT WINAPI ID3DXLineImpl_Draw(ID3DXLine* iface, CONST D3DXVECTOR2* vertexlist, DWORD vertexlistcount, D3DCOLOR color)
@@ -218,9 +272,19 @@ static HRESULT WINAPI ID3DXLineImpl_End(ID3DXLine* iface)
 {
     ID3DXLineImpl *This = impl_from_ID3DXLine(iface);
 
-    FIXME("(%p)->(): stub\n", This);
+    HRESULT hr;
 
-    return E_NOTIMPL;
+    TRACE ("(%p)->()\n", This);
+
+    if (This->state == NULL) /* We haven't begun yet. */
+        return D3DERR_INVALIDCALL;
+
+    hr = IDirect3DStateBlock9_Apply(This->state);
+    IDirect3DStateBlock9_Release(This->state);
+    This->state = NULL;
+
+    if (FAILED(hr)) return D3DXERR_INVALIDDATA;
+    else return D3D_OK;
 }
 
 static HRESULT WINAPI ID3DXLineImpl_OnLostDevice(ID3DXLine* iface)
@@ -285,6 +349,7 @@ HRESULT WINAPI D3DXCreateLine(LPDIRECT3DDEVICE9 device, LPD3DXLINE* line)
     object->ID3DXLine_iface.lpVtbl = &ID3DXLine_Vtbl;
     object->ref = 1;
     object->device = device;
+    object->state = NULL; /* We only initialize it on Begin */
     IDirect3DDevice9_AddRef(device);
 
     *line = &object->ID3DXLine_iface;