d3d10/effect: Implement GetString().

dlls/d3d10/effect.c

@@ -5794,6 +5794,11 @@ static const struct ID3D10EffectMatrixVariableVtbl d3d10_effect_matrix_variable_
 
 /* ID3D10EffectVariable methods */
 
+static inline struct d3d10_effect_variable *impl_from_ID3D10EffectStringVariable(ID3D10EffectStringVariable *iface)
+{
+    return CONTAINING_RECORD(iface, struct d3d10_effect_variable, ID3D10EffectVariable_iface);
+}
+
 static BOOL STDMETHODCALLTYPE d3d10_effect_string_variable_IsValid(ID3D10EffectStringVariable *iface)
 {
     TRACE("iface %p\n", iface);
@@ -5950,9 +5955,20 @@ static HRESULT STDMETHODCALLTYPE d3d10_effect_string_variable_GetRawValue(ID3D10
 static HRESULT STDMETHODCALLTYPE d3d10_effect_string_variable_GetString(ID3D10EffectStringVariable *iface,
         const char **str)
 {
-    FIXME("iface %p, str %p stub!\n", iface, str);
+    struct d3d10_effect_variable *var = impl_from_ID3D10EffectStringVariable(iface);
+    char *value = (char *)var->u.buffer.local_buffer;
 
-    return E_NOTIMPL;
+    TRACE("iface %p, str %p.\n", iface, str);
+
+    if (!value)
+        return E_FAIL;
+
+    if (!str)
+        return E_INVALIDARG;
+
+    *str = value;
+
+    return S_OK;
 }
 
 static HRESULT STDMETHODCALLTYPE d3d10_effect_string_variable_GetStringArray(ID3D10EffectStringVariable *iface,

dlls/d3d10/tests/effect.c

@@ -1422,22 +1422,28 @@ static void test_effect_variable_type_class(void)
     ok(td.Stride == 0x0, "Stride is %#x, expected 0x0\n", td.Stride);
 
     string_var = variable->lpVtbl->AsString(variable);
+    hr = string_var->lpVtbl->GetString(string_var, NULL);
+    ok(hr == E_INVALIDARG, "Unexpected hr %#x.\n", hr);
     hr = string_var->lpVtbl->GetString(string_var, &str1);
-todo_wine
     ok(SUCCEEDED(hr), "GetString failed, hr %#x.\n", hr);
-    if (SUCCEEDED(hr))
-        ok(!strcmp(str1, "STRING"), "Unexpected value %s.\n", str1);
+    ok(!strcmp(str1, "STRING"), "Unexpected value %s.\n", str1);
 
     variable = constantbuffer->lpVtbl->GetAnnotationByIndex(constantbuffer, 1);
     string_var = variable->lpVtbl->AsString(variable);
     hr = string_var->lpVtbl->GetString(string_var, &str2);
-todo_wine
     ok(SUCCEEDED(hr), "GetString failed, hr %#x.\n", hr);
-    if (SUCCEEDED(hr))
-    {
-        ok(str2 != str1, "Unexpected string pointer.\n");
-        ok(!strcmp(str2, "STRING"), "Unexpected value %s.\n", str1);
-    }
+    ok(str2 != str1, "Unexpected string pointer.\n");
+    ok(!strcmp(str2, "STRING"), "Unexpected value %s.\n", str1);
+
+    /* Only two annotations */
+    variable = constantbuffer->lpVtbl->GetAnnotationByIndex(constantbuffer, 2);
+    string_var = variable->lpVtbl->AsString(variable);
+    hr = string_var->lpVtbl->GetString(string_var, NULL);
+    ok(hr == E_FAIL, "Unexpected hr %#x.\n", hr);
+    str1 = (void *)0xdeadbeef;
+    hr = string_var->lpVtbl->GetString(string_var, &str1);
+    ok(hr == E_FAIL, "Unexpected hr %#x.\n", hr);
+    ok(str1 == (void *)0xdeadbeef, "Unexpected pointer.\n");
 
     /* check float f */
     variable = constantbuffer->lpVtbl->GetMemberByIndex(constantbuffer, variable_nr++);