wined3d: Just return the shader from wined3d_device_get_vertex_shader().

dlls/d3d8/device.c

@@ -2174,7 +2174,6 @@ static HRESULT WINAPI d3d8_device_DeleteVertexShader(IDirect3DDevice8 *iface, DW
 {
     struct d3d8_device *device = impl_from_IDirect3DDevice8(iface);
     struct d3d8_vertex_shader *shader_impl;
-    struct wined3d_shader *cur;
 
     TRACE("iface %p, shader %#x.\n", iface, shader);
 
@@ -2187,12 +2186,9 @@ static HRESULT WINAPI d3d8_device_DeleteVertexShader(IDirect3DDevice8 *iface, DW
         return D3DERR_INVALIDCALL;
     }
 
-    if ((cur = wined3d_device_get_vertex_shader(device->wined3d_device)))
-    {
-        if (cur == shader_impl->wined3d_shader)
-            IDirect3DDevice8_SetVertexShader(iface, 0);
-        wined3d_shader_decref(cur);
-    }
+    if (shader_impl->wined3d_shader
+            && wined3d_device_get_vertex_shader(device->wined3d_device) == shader_impl->wined3d_shader)
+        IDirect3DDevice8_SetVertexShader(iface, 0);
 
     wined3d_mutex_unlock();
 

dlls/d3d9/device.c

@@ -2286,13 +2286,11 @@ static HRESULT WINAPI d3d9_device_GetVertexShader(IDirect3DDevice9Ex *iface, IDi
     TRACE("iface %p, shader %p.\n", iface, shader);
 
     wined3d_mutex_lock();
-    wined3d_shader = wined3d_device_get_vertex_shader(device->wined3d_device);
-    if (wined3d_shader)
+    if ((wined3d_shader = wined3d_device_get_vertex_shader(device->wined3d_device)))
     {
         shader_impl = wined3d_shader_get_parent(wined3d_shader);
         *shader = &shader_impl->IDirect3DVertexShader9_iface;
         IDirect3DVertexShader9_AddRef(*shader);
-        wined3d_shader_decref(wined3d_shader);
     }
     else
     {

dlls/wined3d/device.c

@@ -2480,16 +2480,9 @@ void CDECL wined3d_device_set_vertex_shader(struct wined3d_device *device, struc
 
 struct wined3d_shader * CDECL wined3d_device_get_vertex_shader(const struct wined3d_device *device)
 {
-    struct wined3d_shader *shader;
-
     TRACE("device %p.\n", device);
 
-    shader = device->stateBlock->state.vertex_shader;
-    if (shader)
-        wined3d_shader_incref(shader);
-
-    TRACE("Returning %p.\n", shader);
-    return shader;
+    return device->stateBlock->state.vertex_shader;
 }
 
 HRESULT CDECL wined3d_device_set_vs_consts_b(struct wined3d_device *device,