diff --git a/Makefile.am b/Makefile.am
index a790243a..b08e50ce 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -457,15 +457,20 @@ LDADD = libvkd3d.la libvkd3d-shader.la libvkd3d-utils.la
 AM_DEFAULT_SOURCE_EXT = .c
 
 TEST_EXTENSIONS = .shader_test
+TEST_CPPFLAGS = -I$(builddir)/tests
 
 if BUILD_TESTS
 check_PROGRAMS = $(vkd3d_tests) $(vkd3d_cross_tests) tests/shader_runner
 dist_check_SCRIPTS = tests/test-driver.sh
 TESTS = $(vkd3d_tests) $(vkd3d_cross_tests) $(vkd3d_shader_tests)
+tests_d3d12_CPPFLAGS = $(AM_CPPFLAGS) $(TEST_CPPFLAGS)
 tests_d3d12_LDADD = $(LDADD) @PTHREAD_LIBS@ @DL_LIBS@
+tests_d3d12_invalid_usage_CPPFLAGS = $(AM_CPPFLAGS) $(TEST_CPPFLAGS)
 tests_d3d12_invalid_usage_LDADD = $(LDADD) @DL_LIBS@
+tests_hlsl_d3d12_CPPFLAGS = $(AM_CPPFLAGS) $(TEST_CPPFLAGS)
 tests_hlsl_d3d12_LDADD = $(LDADD) @DL_LIBS@
-tests_shader_runner_CFLAGS = $(AM_CFLAGS) -I$(builddir)/tests @OPENGL_CFLAGS@
+tests_shader_runner_CPPFLAGS = $(AM_CPPFLAGS) $(TEST_CPPFLAGS)
+tests_shader_runner_CFLAGS = $(AM_CFLAGS) @OPENGL_CFLAGS@
 tests_shader_runner_LDADD = $(LDADD) @OPENGL_LIBS@ @DL_LIBS@
 tests_shader_runner_SOURCES = \
 	tests/shader_runner.c \
@@ -474,7 +479,9 @@ tests_shader_runner_SOURCES = \
 	tests/shader_runner_d3d12.c \
 	tests/shader_runner_gl.c \
 	tests/shader_runner_vulkan.c
+tests_vkd3d_api_CPPFLAGS = $(AM_CPPFLAGS) $(TEST_CPPFLAGS)
 tests_vkd3d_api_LDADD = libvkd3d.la @DL_LIBS@
+tests_vkd3d_shader_api_CPPFLAGS = $(AM_CPPFLAGS) $(TEST_CPPFLAGS)
 tests_vkd3d_shader_api_CFLAGS = $(AM_CFLAGS) @OPENGL_CFLAGS@
 tests_vkd3d_shader_api_LDADD = libvkd3d-shader.la @OPENGL_LIBS@
 SHADER_TEST_LOG_COMPILER = tests/shader_runner
diff --git a/tests/shader_runner.c b/tests/shader_runner.c
index 692ff90a..cf881b6a 100644
--- a/tests/shader_runner.c
+++ b/tests/shader_runner.c
@@ -62,7 +62,6 @@ typedef int HRESULT;
 #include "vkd3d_d3dcompiler.h"
 #include "vkd3d_test.h"
 #include "shader_runner.h"
-#include "dxcompiler.h"
 
 struct test_options test_options = {0};
 
@@ -1391,55 +1390,28 @@ const char *shader_type_string(enum shader_type type)
     return shader_types[type];
 }
 
-/* Avoid issues with calling convention mismatch and different methods for string
- * retrieval by copying all IDxcBlob objects to a new ID3D10Blob. */
-
-static void d3d10_blob_from_dxc_blob_utf8(IDxcBlobUtf8 *blob, ID3D10Blob **blob_out)
+static HRESULT d3d10_blob_from_vkd3d_shader_code(const struct vkd3d_shader_code *blob, ID3D10Blob **blob_out)
 {
     ID3D10Blob *d3d_blob;
-    size_t size;
     HRESULT hr;
 
-    size = IDxcBlobUtf8_GetStringLength(blob) + 1;
-    if (FAILED(hr = D3DCreateBlob(size, (ID3DBlob **)&d3d_blob)))
-    {
-        trace("Failed to create blob, hr %#x.\n", hr);
-        return;
-    }
-
-    memcpy(ID3D10Blob_GetBufferPointer(d3d_blob), IDxcBlobUtf8_GetStringPointer(blob), size);
-    *blob_out = d3d_blob;
-}
-
-static HRESULT d3d10_blob_from_dxc_blob(IDxcBlob *blob, ID3D10Blob **blob_out)
-{
-    ID3D10Blob *d3d_blob;
-    size_t size;
-    HRESULT hr;
-
-    size = IDxcBlob_GetBufferSize(blob);
-    if (FAILED(hr = D3DCreateBlob(size, (ID3DBlob **)&d3d_blob)))
+    if (FAILED(hr = D3DCreateBlob(blob->size, (ID3DBlob **)&d3d_blob)))
     {
         trace("Failed to create blob, hr %#x.\n", hr);
         return hr;
     }
 
-    memcpy(ID3D10Blob_GetBufferPointer(d3d_blob), IDxcBlob_GetBufferPointer(blob), size);
+    memcpy(ID3D10Blob_GetBufferPointer(d3d_blob), blob->code, blob->size);
     *blob_out = d3d_blob;
 
     return S_OK;
 }
 
-HRESULT dxc_compiler_compile_shader(void *dxc_compiler, enum shader_type type, unsigned int compile_options,
-        const char *hlsl, ID3D10Blob **blob_out, ID3D10Blob **errors_out)
+HRESULT dxc_compiler_compile_shader(void *dxc_compiler, enum shader_type type,
+        unsigned int compile_options, const char *hlsl, ID3D10Blob **blob_out)
 {
-    DxcBuffer src_buf = {hlsl, strlen(hlsl), 65001};
-    IDxcCompiler3 *compiler = dxc_compiler;
-    HRESULT hr, compile_hr;
-    IDxcBlobUtf8 *errors;
-    IDxcResult *result;
-    size_t arg_count;
-    IDxcBlob *blob;
+    struct vkd3d_shader_code blob;
+    HRESULT hr;
 
     static const WCHAR *const shader_profiles[] =
     {
@@ -1450,62 +1422,15 @@ HRESULT dxc_compiler_compile_shader(void *dxc_compiler, enum shader_type type, u
         [SHADER_TYPE_DS] = L"ds_6_0",
         [SHADER_TYPE_GS] = L"gs_6_0",
     };
-    const WCHAR *args[] =
-    {
-        L"/T",
-        shader_profiles[type],
-        L"/Qstrip_reflect",
-        L"/Qstrip_debug",
-        L"/flegacy-macro-expansion",
-        L"/flegacy-resource-reservation",
-        NULL,
-        NULL,
-        NULL,
-    };
 
     *blob_out = NULL;
-    *errors_out = NULL;
 
-    arg_count = ARRAY_SIZE(args) - 3;
-    if (compile_options & D3DCOMPILE_PACK_MATRIX_ROW_MAJOR)
-        args[arg_count++] = L"/Zpr";
-    if (compile_options & D3DCOMPILE_PACK_MATRIX_COLUMN_MAJOR)
-        args[arg_count++] = L"/Zpc";
-    if (compile_options & D3DCOMPILE_ENABLE_BACKWARDS_COMPATIBILITY)
-        args[arg_count++] = L"/Gec";
-
-    if (FAILED(hr = IDxcCompiler3_Compile(compiler, &src_buf, args, arg_count, NULL, &IID_IDxcResult, (void **)&result)))
-    {
-        trace("Failed to compile shader, hr %#x.\n", hr);
+    if (FAILED(hr = dxc_compile(dxc_compiler, shader_profiles[type], compile_options, hlsl, &blob)))
         return hr;
-    }
 
-    if (IDxcResult_HasOutput(result, DXC_OUT_ERRORS)
-            && SUCCEEDED(hr = IDxcResult_GetOutput(result, DXC_OUT_ERRORS, &IID_IDxcBlobUtf8, (void **)&errors, NULL)))
-    {
-        if (IDxcBlobUtf8_GetStringLength(errors))
-            d3d10_blob_from_dxc_blob_utf8(errors, errors_out);
-        IDxcBlobUtf8_Release(errors);
-    }
+    hr = d3d10_blob_from_vkd3d_shader_code(&blob, blob_out);
+    free((void *)blob.code);
 
-    if (FAILED(hr = IDxcResult_GetStatus(result, &compile_hr)) || FAILED((hr = compile_hr)))
-    {
-        if (hr == DXC_E_LLVM_CAST_ERROR)
-            hr = E_FAIL;
-        goto result_release;
-    }
-
-    if (FAILED(hr = IDxcResult_GetOutput(result, DXC_OUT_OBJECT, &IID_IDxcBlob, (void **)&blob, NULL)))
-        goto result_release;
-
-    IDxcResult_Release(result);
-
-    hr = d3d10_blob_from_dxc_blob(blob, blob_out);
-    IDxcBlob_Release(blob);
-    return hr;
-
-result_release:
-    IDxcResult_Release(result);
     return hr;
 }
 
@@ -1539,7 +1464,7 @@ static void compile_shader(struct shader_runner *runner, IDxcCompiler3 *dxc_comp
     if (use_dxcompiler)
     {
         assert(dxc_compiler);
-        hr = dxc_compiler_compile_shader(dxc_compiler, type, runner->compile_options, source, &blob, &errors);
+        hr = dxc_compiler_compile_shader(dxc_compiler, type, runner->compile_options, source, &blob);
     }
     else
     {
@@ -1558,7 +1483,8 @@ static void compile_shader(struct shader_runner *runner, IDxcCompiler3 *dxc_comp
     else
     {
         assert_that(!blob, "Expected no compiled shader blob.\n");
-        assert_that(!!errors, "Expected non-NULL error blob.\n");
+        if (!use_dxcompiler)
+            assert_that(!!errors, "Expected non-NULL error blob.\n");
     }
     if (errors)
     {
@@ -2299,46 +2225,6 @@ out:
 }
 #endif
 
-#if (defined(SONAME_LIBDXCOMPILER) || defined(VKD3D_CROSSTEST))
-static IDxcCompiler3 *dxcompiler_create(void)
-{
-    DxcCreateInstanceProc create_instance;
-    IDxcCompiler3 *compiler;
-    const char *skip_dxc;
-    HRESULT hr;
-    void *dll;
-
-    if ((skip_dxc = getenv("VKD3D_TEST_SKIP_DXC")) && strcmp(skip_dxc, "") != 0)
-        return NULL;
-
-#ifdef VKD3D_CROSSTEST
-    dll = vkd3d_dlopen("dxcompiler.dll");
-#else
-    dll = vkd3d_dlopen(SONAME_LIBDXCOMPILER);
-#endif
-    ok(dll, "Failed to load dxcompiler library, %s.\n", vkd3d_dlerror());
-    if (!dll)
-        return NULL;
-
-    create_instance = (DxcCreateInstanceProc)vkd3d_dlsym(dll, "DxcCreateInstance");
-    ok(create_instance, "Failed to get DxcCreateInstance() pointer.\n");
-    if (!create_instance)
-        return NULL;
-
-    hr = create_instance(&CLSID_DxcCompiler, &IID_IDxcCompiler3, (void **)&compiler);
-    ok(SUCCEEDED(hr), "Failed to create instance, hr %#x.\n", hr);
-    if (FAILED(hr))
-        return NULL;
-
-    return compiler;
-}
-#else
-static IDxcCompiler3 *dxcompiler_create(void)
-{
-    return NULL;
-}
-#endif
-
 START_TEST(shader_runner)
 {
     IDxcCompiler3 *dxc_compiler;
diff --git a/tests/shader_runner.h b/tests/shader_runner.h
index a4ae8b95..99078cc6 100644
--- a/tests/shader_runner.h
+++ b/tests/shader_runner.h
@@ -242,8 +242,8 @@ void fatal_error(const char *format, ...) VKD3D_NORETURN VKD3D_PRINTF_FUNC(1, 2)
 
 unsigned int get_vb_stride(const struct shader_runner *runner, unsigned int slot);
 void init_resource(struct resource *resource, const struct resource_params *params);
-HRESULT dxc_compiler_compile_shader(void *dxc_compiler, enum shader_type type, unsigned int compile_options,
-        const char *hlsl, ID3D10Blob **blob_out, ID3D10Blob **errors_out);
+HRESULT dxc_compiler_compile_shader(void *dxc_compiler, enum shader_type type,
+        unsigned int compile_options, const char *hlsl, ID3D10Blob **blob_out);
 struct sampler *shader_runner_get_sampler(struct shader_runner *runner, unsigned int slot);
 struct resource *shader_runner_get_resource(struct shader_runner *runner, enum resource_type type, unsigned int slot);
 
diff --git a/tests/shader_runner_d3d12.c b/tests/shader_runner_d3d12.c
index 0d0ef4cf..f16e4c7d 100644
--- a/tests/shader_runner_d3d12.c
+++ b/tests/shader_runner_d3d12.c
@@ -85,12 +85,13 @@ static ID3D10Blob *compile_shader(const struct d3d12_shader_runner *runner, cons
     if (runner->r.minimum_shader_model >= SHADER_MODEL_6_0)
     {
         assert(runner->dxc_compiler);
-        hr = dxc_compiler_compile_shader(runner->dxc_compiler, type, runner->r.compile_options, source, &blob, &errors);
+        hr = dxc_compiler_compile_shader(runner->dxc_compiler, type, runner->r.compile_options, source, &blob);
     }
     else
     {
         sprintf(profile, "%s_%s", shader_type_string(type), shader_models[runner->r.minimum_shader_model]);
-        hr = D3DCompile(source, strlen(source), NULL, NULL, NULL, "main", profile, runner->r.compile_options, 0, &blob, &errors);
+        hr = D3DCompile(source, strlen(source), NULL, NULL, NULL, "main",
+                profile, runner->r.compile_options, 0, &blob, &errors);
     }
     ok(FAILED(hr) == !blob, "Got unexpected hr %#x, blob %p.\n", hr, blob);
     if (errors)
diff --git a/tests/utils.h b/tests/utils.h
index 081c4cd9..ae042a37 100644
--- a/tests/utils.h
+++ b/tests/utils.h
@@ -44,6 +44,9 @@
 #include <stdlib.h>
 #include "vkd3d_test.h"
 #include "vkd3d_d3d12.h"
+#include "vkd3d_d3dcompiler.h"
+#include "vkd3d_shader.h"
+#include "dxcompiler.h"
 
 struct vec2
 {
@@ -453,4 +456,129 @@ static inline void parse_args(int argc, char **argv)
     }
 }
 
+static inline HRESULT vkd3d_shader_code_from_dxc_blob(IDxcBlob *blob, struct vkd3d_shader_code *blob_out)
+{
+    size_t size;
+
+    size = IDxcBlob_GetBufferSize(blob);
+    if (!(blob_out->code = malloc(size)))
+    {
+        trace("Failed to allocate shader code.\n");
+        return E_OUTOFMEMORY;
+    }
+
+    memcpy((void *)blob_out->code, IDxcBlob_GetBufferPointer(blob), size);
+    blob_out->size = size;
+
+    return S_OK;
+}
+
+static inline HRESULT dxc_compile(void *dxc_compiler, const WCHAR *profile,
+        unsigned int compile_options, const char *hlsl, struct vkd3d_shader_code *blob_out)
+{
+    DxcBuffer src_buf = {hlsl, strlen(hlsl), 65001};
+    IDxcCompiler3 *compiler = dxc_compiler;
+    IDxcBlobUtf8 *errors;
+    IDxcResult *result;
+    HRESULT compile_hr;
+    size_t arg_count;
+    IDxcBlob *blob;
+    int hr;
+
+    const WCHAR *args[] =
+    {
+        L"/T",
+        profile,
+        L"/Qstrip_reflect",
+        L"/Qstrip_debug",
+        L"/flegacy-macro-expansion",
+        L"/flegacy-resource-reservation",
+        NULL,
+        NULL,
+        NULL,
+    };
+
+    memset(blob_out, 0, sizeof(*blob_out));
+
+    arg_count = ARRAY_SIZE(args) - 3;
+    if (compile_options & D3DCOMPILE_PACK_MATRIX_ROW_MAJOR)
+        args[arg_count++] = L"/Zpr";
+    if (compile_options & D3DCOMPILE_PACK_MATRIX_COLUMN_MAJOR)
+        args[arg_count++] = L"/Zpc";
+    if (compile_options & D3DCOMPILE_ENABLE_BACKWARDS_COMPATIBILITY)
+        args[arg_count++] = L"/Gec";
+
+    if (FAILED(hr = IDxcCompiler3_Compile(compiler, &src_buf, args,
+            arg_count, NULL, &IID_IDxcResult, (void **)&result)))
+        return hr;
+
+    if (IDxcResult_HasOutput(result, DXC_OUT_ERRORS)
+            && SUCCEEDED(hr = IDxcResult_GetOutput(result, DXC_OUT_ERRORS, &IID_IDxcBlobUtf8, (void **)&errors, NULL)))
+    {
+        if (IDxcBlobUtf8_GetStringLength(errors) && vkd3d_test_state.debug_level)
+            trace("%s\n", (char *)IDxcBlobUtf8_GetStringPointer(errors));
+        IDxcBlobUtf8_Release(errors);
+    }
+
+    if (FAILED(hr = IDxcResult_GetStatus(result, &compile_hr)) || FAILED((hr = compile_hr)))
+    {
+        if (hr == DXC_E_LLVM_CAST_ERROR)
+            hr = E_FAIL;
+        goto result_release;
+    }
+
+    if (FAILED(hr = IDxcResult_GetOutput(result, DXC_OUT_OBJECT, &IID_IDxcBlob, (void **)&blob, NULL)))
+        goto result_release;
+
+    IDxcResult_Release(result);
+
+    hr = vkd3d_shader_code_from_dxc_blob(blob, blob_out);
+    IDxcBlob_Release(blob);
+    return hr;
+
+result_release:
+    IDxcResult_Release(result);
+    return hr;
+}
+
+#if (defined(SONAME_LIBDXCOMPILER) || defined(VKD3D_CROSSTEST))
+static inline IDxcCompiler3 *dxcompiler_create(void)
+{
+    DxcCreateInstanceProc create_instance;
+    IDxcCompiler3 *compiler;
+    const char *skip_dxc;
+    void *dll;
+    int hr;
+
+    if ((skip_dxc = getenv("VKD3D_TEST_SKIP_DXC")) && strcmp(skip_dxc, "") != 0)
+        return NULL;
+
+# ifdef VKD3D_CROSSTEST
+    dll = vkd3d_dlopen("dxcompiler.dll");
+# else
+    dll = vkd3d_dlopen(SONAME_LIBDXCOMPILER);
+# endif
+    ok(dll, "Failed to load dxcompiler library, %s.\n", vkd3d_dlerror());
+    if (!dll)
+        return NULL;
+
+    create_instance = (DxcCreateInstanceProc)vkd3d_dlsym(dll, "DxcCreateInstance");
+    ok(create_instance, "Failed to get DxcCreateInstance() pointer.\n");
+    if (!create_instance)
+        return NULL;
+
+    hr = create_instance(&CLSID_DxcCompiler, &IID_IDxcCompiler3, (void **)&compiler);
+    ok(SUCCEEDED(hr), "Failed to create instance, hr %#x.\n", hr);
+    if (FAILED(hr))
+        return NULL;
+
+    return compiler;
+}
+#else
+static inline IDxcCompiler3 *dxcompiler_create(void)
+{
+    return NULL;
+}
+#endif
+
 #endif