d3dx9/effect: Reset output handle for next after last technique in FindNextValidTechnique().

dlls/d3dx9_36/effect.c

@@ -3816,7 +3816,7 @@ static HRESULT WINAPI d3dx_effect_FindNextValidTechnique(ID3DXEffect *iface, D3D
         }
     }
 
-    *next_technique = get_technique_handle(&effect->techniques[0]);
+    *next_technique = NULL;
     return S_FALSE;
 }
 

dlls/d3dx9_36/tests/effect.c

@@ -7892,9 +7892,9 @@ static void test_effect_find_next_valid_technique(void)
     D3DPRESENT_PARAMETERS present_parameters = {0};
     IDirect3DDevice9 *device;
     D3DXTECHNIQUE_DESC desc;
+    D3DXHANDLE tech, tech2;
     ID3DXEffect *effect;
     IDirect3D9 *d3d;
-    D3DXHANDLE tech;
     ULONG refcount;
     HWND window;
     HRESULT hr;
@@ -7939,9 +7939,12 @@ static void test_effect_find_next_valid_technique(void)
     ok(hr == D3D_OK, "Got result %#x.\n", hr);
     ok(!strcmp(desc.Name, "tech1"), "Got unexpected technique %s.\n", desc.Name);
 
-    hr = effect->lpVtbl->FindNextValidTechnique(effect, tech, &tech);
+    tech2 = tech;
+    hr = effect->lpVtbl->FindNextValidTechnique(effect, tech, &tech2);
     ok(hr == S_FALSE, "Got result %#x.\n", hr);
-    hr = effect->lpVtbl->GetTechniqueDesc(effect, tech, &desc);
+    ok(!tech2, "Unexpected technique handle %p.\n", tech2);
+    /* Test GetTechniqueDesc() with a NULL handle. */
+    hr = effect->lpVtbl->GetTechniqueDesc(effect, tech2, &desc);
     ok(hr == D3D_OK, "Got result %#x.\n", hr);
     ok(!strcmp(desc.Name, "tech0"), "Got unexpected technique %s.\n", desc.Name);
 
@@ -7957,9 +7960,10 @@ static void test_effect_find_next_valid_technique(void)
     ok(hr == D3D_OK, "Got result %#x.\n", hr);
     ok(!strcmp(desc.Name, "tech1"), "Got unexpected technique %s.\n", desc.Name);
 
-    hr = effect->lpVtbl->FindNextValidTechnique(effect, tech, &tech);
+    hr = effect->lpVtbl->FindNextValidTechnique(effect, tech, &tech2);
     ok(hr == S_FALSE, "Got result %#x.\n", hr);
-    hr = effect->lpVtbl->GetTechniqueDesc(effect, tech, &desc);
+    ok(!tech2, "Unexpected technique handle %p.\n", tech2);
+    hr = effect->lpVtbl->GetTechniqueDesc(effect, tech2, &desc);
     ok(hr == D3D_OK, "Got result %#x.\n", hr);
     ok(!strcmp(desc.Name, "tech0"), "Got unexpected technique %s.\n", desc.Name);
 
@@ -7985,8 +7989,9 @@ static void test_effect_find_next_valid_technique(void)
     ok(hr == D3D_OK, "Got result %#x.\n", hr);
     ok(!strcmp(desc.Name, "tech1"), "Got unexpected technique %s.\n", desc.Name);
 
-    hr = effect->lpVtbl->FindNextValidTechnique(effect, tech, &tech);
+    hr = effect->lpVtbl->FindNextValidTechnique(effect, tech, &tech2);
     ok(hr == S_FALSE, "Got result %#x.\n", hr);
+    ok(!tech2, "Unexpected technique handle %p.\n", tech2);
 
     hr = effect->lpVtbl->FindNextValidTechnique(effect, "nope", &tech);
     ok(hr == D3DERR_INVALIDCALL, "Got result %#x.\n", hr);