[PATCH 1/4] d3d10core: Use unsafe_impl_from_ID3D10RenderTargetView for app provided ifaces.

[Michael Stefaniuc]

---
 dlls/d3d10core/d3d10core_private.h |    1 +
 dlls/d3d10core/device.c            |    5 ++---
 dlls/d3d10core/view.c              |   15 +++++++++++++++
 3 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/dlls/d3d10core/d3d10core_private.h b/dlls/d3d10core/d3d10core_private.h
index 457ba09..c53a61b 100644
--- a/dlls/d3d10core/d3d10core_private.h
+++ b/dlls/d3d10core/d3d10core_private.h
@@ -141,6 +141,7 @@ struct d3d10_rendertarget_view
 
 HRESULT d3d10_rendertarget_view_init(struct d3d10_rendertarget_view *view,
         ID3D10Resource *resource, const D3D10_RENDER_TARGET_VIEW_DESC *desc) DECLSPEC_HIDDEN;
+struct d3d10_rendertarget_view *unsafe_impl_from_ID3D10RenderTargetView(ID3D10RenderTargetView *iface) DECLSPEC_HIDDEN;
 
 /* ID3D10ShaderResourceView */
 struct d3d10_shader_resource_view
diff --git a/dlls/d3d10core/device.c b/dlls/d3d10core/device.c
index 4df04f1..1609baf 100644
--- a/dlls/d3d10core/device.c
+++ b/dlls/d3d10core/device.c
@@ -383,14 +383,13 @@ static void STDMETHODCALLTYPE d3d10_device_ClearRenderTargetView(ID3D10Device *i
         ID3D10RenderTargetView *render_target_view, const FLOAT color_rgba[4])
 {
     struct d3d10_device *This = impl_from_ID3D10Device(iface);
-    struct wined3d_rendertarget_view *wined3d_view;
+    struct d3d10_rendertarget_view *view = unsafe_impl_from_ID3D10RenderTargetView(render_target_view);
     const WINED3DCOLORVALUE color = {color_rgba[0], color_rgba[1], color_rgba[2], color_rgba[3]};
 
     TRACE("iface %p, render_target_view %p, color_rgba [%f %f %f %f]\n",
             iface, render_target_view, color_rgba[0], color_rgba[1], color_rgba[2], color_rgba[3]);
 
-    wined3d_view = ((struct d3d10_rendertarget_view *)render_target_view)->wined3d_view;
-    wined3d_device_clear_rendertarget_view(This->wined3d_device, wined3d_view, &color);
+    wined3d_device_clear_rendertarget_view(This->wined3d_device, view->wined3d_view, &color);
 }
 
 static void STDMETHODCALLTYPE d3d10_device_ClearDepthStencilView(ID3D10Device *iface,
diff --git a/dlls/d3d10core/view.c b/dlls/d3d10core/view.c
index fb289a6..75cb4b5 100644
--- a/dlls/d3d10core/view.c
+++ b/dlls/d3d10core/view.c
@@ -19,6 +19,7 @@
 
 #include "config.h"
 #include "wine/port.h"
+#include <assert.h>
 
 #define NONAMELESSUNION
 #include "d3d10core_private.h"
@@ -291,6 +292,11 @@ HRESULT d3d10_depthstencil_view_init(struct d3d10_depthstencil_view *view)
     return S_OK;
 }
 
+static inline struct d3d10_rendertarget_view *impl_from_ID3D10RenderTargetView(ID3D10RenderTargetView *iface)
+{
+    return CONTAINING_RECORD(iface, struct d3d10_rendertarget_view, vtbl);
+}
+
 /* IUnknown methods */
 
 static HRESULT STDMETHODCALLTYPE d3d10_rendertarget_view_QueryInterface(ID3D10RenderTargetView *iface,
@@ -468,6 +474,15 @@ HRESULT d3d10_rendertarget_view_init(struct d3d10_rendertarget_view *view,
     return S_OK;
 }
 
+struct d3d10_rendertarget_view *unsafe_impl_from_ID3D10RenderTargetView(ID3D10RenderTargetView *iface)
+{
+    if (!iface)
+        return NULL;
+    assert(iface->lpVtbl == &d3d10_rendertarget_view_vtbl);
+
+    return impl_from_ID3D10RenderTargetView(iface);
+}
+
 static inline struct d3d10_shader_resource_view *impl_from_ID3D10ShaderResourceView(ID3D10ShaderResourceView *iface)
 {
     return CONTAINING_RECORD(iface, struct d3d10_shader_resource_view, ID3D10ShaderResourceView_iface);
-- 
1.7.4.4