diff --git a/tests/shader_runner_d3d11.c b/tests/shader_runner_d3d11.c
index b1038bd4c..c3e77ef85 100644
--- a/tests/shader_runner_d3d11.c
+++ b/tests/shader_runner_d3d11.c
@@ -451,15 +451,11 @@ static void create_identity_view(ID3D11Device *device,
 static bool init_resource_2d(struct d3d11_shader_runner *runner, struct d3d11_resource *resource,
         const struct resource_params *params)
 {
-    D3D11_SUBRESOURCE_DATA resource_data[6];
     ID3D11Device *device = runner->device;
     D3D11_TEXTURE2D_DESC desc = {0};
     UINT quality_levels;
     HRESULT hr;
 
-    if (params->desc.level_count > ARRAY_SIZE(resource_data))
-        fatal_error("Level count %u is too high.\n", params->desc.level_count);
-
     if (params->desc.sample_count > 1)
     {
         if (params->desc.level_count > 1)
@@ -488,11 +484,15 @@ static bool init_resource_2d(struct d3d11_shader_runner *runner, struct d3d11_re
 
     if (params->data)
     {
+        D3D11_SUBRESOURCE_DATA *resource_data;
+
         if (params->desc.sample_count > 1)
             fatal_error("Cannot upload data to a multisampled texture.\n");
 
+        resource_data = calloc(params->desc.layer_count * params->desc.level_count, sizeof(*resource_data));
         init_subresource_data(resource_data, params);
         hr = ID3D11Device_CreateTexture2D(device, &desc, resource_data, &resource->texture);
+        free(resource_data);
     }
     else
     {
diff --git a/tests/shader_runner_d3d12.c b/tests/shader_runner_d3d12.c
index 4c88ba5a1..e4debd681 100644
--- a/tests/shader_runner_d3d12.c
+++ b/tests/shader_runner_d3d12.c
@@ -83,14 +83,12 @@ static struct resource *d3d12_runner_create_resource(struct shader_runner *r, co
     struct d3d12_shader_runner *runner = d3d12_shader_runner(r);
     struct test_context *test_context = &runner->test_context;
     ID3D12Device *device = test_context->device;
-    D3D12_SUBRESOURCE_DATA resource_data[6] = {0};
     D3D12_RESOURCE_STATES initial_state, state;
+    D3D12_SUBRESOURCE_DATA *resource_data;
     struct d3d12_resource *resource;
     unsigned int buffer_offset = 0;
 
-    if (params->desc.level_count > ARRAY_SIZE(resource_data))
-        fatal_error("Level count %u is too high.\n", params->desc.level_count);
-
+    resource_data = calloc(params->desc.layer_count * params->desc.level_count, sizeof(*resource_data));
     resource = calloc(1, sizeof(*resource));
     init_resource(&resource->r, params);
 
@@ -294,6 +292,7 @@ static struct resource *d3d12_runner_create_resource(struct shader_runner *r, co
             break;
     }
 
+    free(resource_data);
     return &resource->r;
 }