diff --git a/tests/d3d12_test_utils.h b/tests/d3d12_test_utils.h
index 061931c2..d8220409 100644
--- a/tests/d3d12_test_utils.h
+++ b/tests/d3d12_test_utils.h
@@ -411,15 +411,6 @@ static inline unsigned int format_block_height(DXGI_FORMAT format)
     }
 }
 
-struct resource_readback
-{
-    uint64_t width;
-    unsigned int height;
-    unsigned int depth;
-    uint64_t row_pitch;
-    void *data;
-};
-
 struct d3d12_resource_readback
 {
     struct resource_readback rb;
diff --git a/tests/shader_runner_d3d11.c b/tests/shader_runner_d3d11.c
index 9d1ed09b..c8304ce6 100644
--- a/tests/shader_runner_d3d11.c
+++ b/tests/shader_runner_d3d11.c
@@ -540,15 +540,16 @@ static bool d3d11_runner_draw(struct shader_runner *r,
     return true;
 }
 
-struct resource_readback
+struct d3d11_resource_readback
 {
+    struct resource_readback rb;
     ID3D11Resource *resource;
-    D3D11_MAPPED_SUBRESOURCE map_desc;
 };
 
-static void init_readback(struct d3d11_shader_runner *runner, struct resource_readback *rb)
+static void init_readback(struct d3d11_shader_runner *runner, struct d3d11_resource_readback *rb)
 {
     D3D11_TEXTURE2D_DESC texture_desc;
+    D3D11_MAPPED_SUBRESOURCE map_desc;
     HRESULT hr;
 
     ID3D11Texture2D_GetDesc(runner->rt, &texture_desc);
@@ -560,11 +561,17 @@ static void init_readback(struct d3d11_shader_runner *runner, struct resource_re
     ok(hr == S_OK, "Failed to create texture, hr %#lx.\n", hr);
 
     ID3D11DeviceContext_CopyResource(runner->immediate_context, rb->resource, (ID3D11Resource *)runner->rt);
-    hr = ID3D11DeviceContext_Map(runner->immediate_context, rb->resource, 0, D3D11_MAP_READ, 0, &rb->map_desc);
+    hr = ID3D11DeviceContext_Map(runner->immediate_context, rb->resource, 0, D3D11_MAP_READ, 0, &map_desc);
     ok(hr == S_OK, "Failed to map texture, hr %#lx.\n", hr);
+
+    rb->rb.data = map_desc.pData;
+    rb->rb.row_pitch = map_desc.RowPitch;
+    rb->rb.width = texture_desc.Width;
+    rb->rb.height = texture_desc.Height;
+    rb->rb.depth = 1;
 }
 
-static void release_readback(struct d3d11_shader_runner *runner, struct resource_readback *rb)
+static void release_readback(struct d3d11_shader_runner *runner, struct d3d11_resource_readback *rb)
 {
     ID3D11DeviceContext_Unmap(runner->immediate_context, rb->resource, 0);
     ID3D11Resource_Release(rb->resource);
@@ -572,7 +579,7 @@ static void release_readback(struct d3d11_shader_runner *runner, struct resource
 
 static const struct vec4 *get_readback_vec4(struct resource_readback *rb, unsigned int x, unsigned int y)
 {
-    return (struct vec4 *)((BYTE *)rb->map_desc.pData + y * rb->map_desc.RowPitch) + x;
+    return (struct vec4 *)((BYTE *)rb->data + y * rb->row_pitch) + x;
 }
 
 static void check_readback_data_vec4(struct resource_readback *rb,
@@ -603,10 +610,10 @@ static void check_readback_data_vec4(struct resource_readback *rb,
 static void d3d11_runner_probe_vec4(struct shader_runner *r, const RECT *rect, const struct vec4 *v, unsigned int ulps)
 {
     struct d3d11_shader_runner *runner = d3d11_shader_runner(r);
-    struct resource_readback rb;
+    struct d3d11_resource_readback rb;
 
     init_readback(runner, &rb);
-    check_readback_data_vec4(&rb, rect, v, ulps);
+    check_readback_data_vec4(&rb.rb, rect, v, ulps);
     release_readback(runner, &rb);
 }
 
diff --git a/tests/shader_runner_d3d9.c b/tests/shader_runner_d3d9.c
index f2875d42..14f8184a 100644
--- a/tests/shader_runner_d3d9.c
+++ b/tests/shader_runner_d3d9.c
@@ -449,14 +449,15 @@ static bool d3d9_runner_draw(struct shader_runner *r,
     return true;
 }
 
-struct resource_readback
+struct d3d9_resource_readback
 {
+    struct resource_readback rb;
     IDirect3DSurface9 *surface;
-    D3DLOCKED_RECT rect;
 };
 
-static void init_readback(struct d3d9_shader_runner *runner, struct resource_readback *rb)
+static void init_readback(struct d3d9_shader_runner *runner, struct d3d9_resource_readback *rb)
 {
+    D3DLOCKED_RECT map_desc;
     D3DSURFACE_DESC desc;
     HRESULT hr;
 
@@ -469,13 +470,19 @@ static void init_readback(struct d3d9_shader_runner *runner, struct resource_rea
     hr = IDirect3DDevice9Ex_GetRenderTargetData(runner->device, runner->rt, rb->surface);
     ok(hr == D3D_OK, "Failed to get render target data, hr %#lx.\n", hr);
 
-    hr = IDirect3DSurface9_LockRect(rb->surface, &rb->rect, NULL, D3DLOCK_READONLY);
+    hr = IDirect3DSurface9_LockRect(rb->surface, &map_desc, NULL, D3DLOCK_READONLY);
     ok(hr == D3D_OK, "Failed to lock surface, hr %#lx.\n", hr);
+
+    rb->rb.data = map_desc.pBits;
+    rb->rb.row_pitch = map_desc.Pitch;
+    rb->rb.width = desc.Width;
+    rb->rb.height = desc.Height;
+    rb->rb.depth = 1;
 }
 
 static const struct vec4 *get_readback_vec4(const struct resource_readback *rb, unsigned int x, unsigned int y)
 {
-    return (struct vec4 *)((BYTE *)rb->rect.pBits + y * rb->rect.Pitch + x * sizeof(struct vec4));
+    return (struct vec4 *)((BYTE *)rb->data + y * rb->row_pitch + x * sizeof(struct vec4));
 }
 
 static void check_readback_data_vec4(struct resource_readback *rb,
@@ -503,7 +510,7 @@ static void check_readback_data_vec4(struct resource_readback *rb,
             got.x, got.y, got.z, got.w, expected->x, expected->y, expected->z, expected->w, x, y);
 }
 
-static void release_readback(struct resource_readback *rb)
+static void release_readback(struct d3d9_resource_readback *rb)
 {
     IDirect3DSurface9_UnlockRect(rb->surface);
     IDirect3DSurface9_Release(rb->surface);
@@ -512,10 +519,10 @@ static void release_readback(struct resource_readback *rb)
 static void d3d9_runner_probe_vec4(struct shader_runner *r, const RECT *rect, const struct vec4 *v, unsigned int ulps)
 {
     struct d3d9_shader_runner *runner = d3d9_shader_runner(r);
-    struct resource_readback rb;
+    struct d3d9_resource_readback rb;
 
     init_readback(runner, &rb);
-    check_readback_data_vec4(&rb, rect, v, ulps);
+    check_readback_data_vec4(&rb.rb, rect, v, ulps);
     release_readback(&rb);
 }
 
diff --git a/tests/utils.h b/tests/utils.h
index 563f0b0f..2cb9511f 100644
--- a/tests/utils.h
+++ b/tests/utils.h
@@ -21,6 +21,7 @@
 
 #include <limits.h>
 #include <stdbool.h>
+#include <stdint.h>
 #include <stdlib.h>
 
 struct vec2
@@ -33,6 +34,15 @@ struct vec4
     float x, y, z, w;
 };
 
+struct resource_readback
+{
+    uint64_t width;
+    unsigned int height;
+    unsigned int depth;
+    uint64_t row_pitch;
+    void *data;
+};
+
 static inline bool vkd3d_array_reserve(void **elements, size_t *capacity, size_t element_count, size_t element_size)
 {
     size_t new_capacity, max_capacity;