Matteo Bruni : ddraw: Forbid setting viewport extents larger than the render target in SetViewport ().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 700394f5ff748bd949c12120ee6c15150dc8cbb9
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=700394f5ff748bd949c12120e...

Author: Matteo Bruni 
Date:   Fri Apr 20 00:55:40 2018 +0200

ddraw: Forbid setting viewport extents larger than the render target in SetViewport().

Signed-off-by: Matteo Bruni 
Signed-off-by: Henri Verbeet 
Signed-off-by: Alexandre Julliard

---

dlls/ddraw/viewport.c | 39 ++++++++++++++++++++++++++++++++-------
 1 file changed, 32 insertions(+), 7 deletions(-)

diff --git a/dlls/ddraw/viewport.c b/dlls/ddraw/viewport.c
index 0bc746e..fad079f 100644
--- a/dlls/ddraw/viewport.c
+++ b/dlls/ddraw/viewport.c
@@ -299,7 +299,10 @@ static HRESULT WINAPI d3d_viewport_SetViewport(IDirect3DViewport3 *iface, D3DVIE
 {
     struct d3d_viewport *viewport = impl_from_IDirect3DViewport3(iface);
     struct d3d_device *device = viewport->active_device;
+    struct wined3d_sub_resource_desc rt_desc;
+    struct wined3d_rendertarget_view *rtv;
     IDirect3DViewport3 *current_viewport;
+    struct ddraw_surface *surface;

TRACE("iface %p, vp %p.\n", iface, vp);

@@ -312,8 +315,33 @@ static HRESULT WINAPI d3d_viewport_SetViewport(IDirect3DViewport3 *iface, D3DVIE
         _dump_D3DVIEWPORT(vp);
     }

+    if (!device)
+    {
+        WARN("Viewport not bound to a device, returning D3DERR_VIEWPORTHASNODEVICE.\n");
+        return D3DERR_VIEWPORTHASNODEVICE;
+    }
+
     wined3d_mutex_lock();

+    if (device->version > 1)
+    {
+        if (!(rtv = wined3d_device_get_rendertarget_view(device->wined3d_device, 0)))
+        {
+            wined3d_mutex_unlock();
+            return DDERR_INVALIDCAPS;
+        }
+        surface = wined3d_rendertarget_view_get_sub_resource_parent(rtv);
+        wined3d_texture_get_sub_resource_desc(surface->wined3d_texture, surface->sub_resource_idx, &rt_desc);
+
+        if (vp->dwX > rt_desc.width || vp->dwWidth > rt_desc.width - vp->dwX
+            || vp->dwY > rt_desc.height || vp->dwHeight > rt_desc.height - vp->dwY)
+        {
+            WARN("Invalid viewport, returning DDERR_INVALIDPARAMS.\n");
+            wined3d_mutex_unlock();
+            return DDERR_INVALIDPARAMS;
+        }
+    }
+
     viewport->use_vp2 = 0;
     memset(&viewport->viewports.vp1, 0, sizeof(viewport->viewports.vp1));
     memcpy(&viewport->viewports.vp1, vp, vp->dwSize);
@@ -323,14 +351,11 @@ static HRESULT WINAPI d3d_viewport_SetViewport(IDirect3DViewport3 *iface, D3DVIE
     viewport->viewports.vp1.dvMinZ = 0.0;
     viewport->viewports.vp1.dvMaxZ = 1.0;

-    if (device)
+    if (SUCCEEDED(IDirect3DDevice3_GetCurrentViewport(&device->IDirect3DDevice3_iface, &current_viewport)))
     {
-        if (SUCCEEDED(IDirect3DDevice3_GetCurrentViewport(&device->IDirect3DDevice3_iface, &current_viewport)))
-        {
-            if (current_viewport == iface)
-                viewport_activate(viewport, FALSE);
-            IDirect3DViewport3_Release(current_viewport);
-        }
+        if (current_viewport == iface)
+            viewport_activate(viewport, FALSE);
+        IDirect3DViewport3_Release(current_viewport);
     }

wined3d_mutex_unlock();