d3d8: Validate vertex stride in Draw[Indexed]PrimitiveUP().

dlls/d3d8/device.c

@@ -2432,9 +2432,9 @@ static HRESULT WINAPI d3d8_device_DrawPrimitiveUP(IDirect3DDevice8 *iface,
     TRACE("iface %p, primitive_type %#x, primitive_count %u, data %p, stride %u.\n",
             iface, primitive_type, primitive_count, data, stride);
 
-    if (!primitive_count)
+    if (!primitive_count || !stride)
     {
-        WARN("primitive_count is 0, returning D3D_OK\n");
+        WARN("primitive_count or stride is 0, returning D3D_OK.\n");
         return D3D_OK;
     }
 
@@ -2532,9 +2532,9 @@ static HRESULT WINAPI d3d8_device_DrawIndexedPrimitiveUP(IDirect3DDevice8 *iface
             iface, primitive_type, min_vertex_idx, vertex_count, primitive_count,
             index_data, index_format, vertex_data, vertex_stride);
 
-    if (!primitive_count)
+    if (!primitive_count || !vertex_stride)
     {
-        WARN("primitive_count is 0, returning D3D_OK\n");
+        WARN("primitive_count or vertex_stride is 0, returning D3D_OK.\n");
         return D3D_OK;
     }
 

dlls/d3d8/tests/device.c

@@ -9512,6 +9512,11 @@ static void test_draw_primitive(void)
     ok(stride == sizeof(*quad), "Unexpected stride %u.\n", stride);
     IDirect3DVertexBuffer8_Release(current_vb);
 
+    hr = IDirect3DDevice8_DrawPrimitiveUP(device, D3DPT_TRIANGLELIST, 0, quad, 0);
+    ok(hr == D3D_OK, "DrawPrimitiveUP failed, hr %#x.\n", hr);
+    hr = IDirect3DDevice8_DrawPrimitiveUP(device, D3DPT_TRIANGLELIST, 0, quad, sizeof(*quad));
+    ok(hr == D3D_OK, "DrawPrimitiveUP failed, hr %#x.\n", hr);
+
     hr = IDirect3DDevice8_DrawPrimitiveUP(device, D3DPT_TRIANGLELIST, 2, quad, sizeof(*quad));
     ok(SUCCEEDED(hr), "DrawPrimitiveUP failed, hr %#x.\n", hr);
 
@@ -9538,6 +9543,13 @@ static void test_draw_primitive(void)
     ok(base_vertex_index == 1, "Unexpected base vertex index %u.\n", base_vertex_index);
     IDirect3DIndexBuffer8_Release(current_ib);
 
+    hr = IDirect3DDevice8_DrawIndexedPrimitiveUP(device, D3DPT_TRIANGLELIST, 0, 4, 0,
+            indices, D3DFMT_INDEX16, quad, 0);
+    ok(SUCCEEDED(hr), "DrawIndexedPrimitiveUP failed, hr %#x.\n", hr);
+    hr = IDirect3DDevice8_DrawIndexedPrimitiveUP(device, D3DPT_TRIANGLELIST, 0, 4, 2,
+            indices, D3DFMT_INDEX16, quad, 0);
+    ok(SUCCEEDED(hr), "DrawIndexedPrimitiveUP failed, hr %#x.\n", hr);
+
     hr = IDirect3DDevice8_DrawIndexedPrimitiveUP(device, D3DPT_TRIANGLELIST, 0, 4, 2,
             indices, D3DFMT_INDEX16, quad, sizeof(*quad));
     ok(SUCCEEDED(hr), "DrawIndexedPrimitiveUP failed, hr %#x.\n", hr);