tests: Move the drawing and readback implementation to the d3d12 shader runner.

Signed-off-by: Zebediah Figura <zfigura@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

tests/utils.h

@@ -0,0 +1,58 @@
+/*
+ * Copyright 2016-2018 Józef Kucia for CodeWeavers
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifndef __VKD3D_TEST_UTILS_H
+#define __VKD3D_TEST_UTILS_H
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+struct vec4
+{
+    float x, y, z, w;
+};
+
+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;
+    void *new_elements;
+
+    if (element_count <= *capacity)
+        return true;
+
+    max_capacity = ~(size_t)0 / element_size;
+    if (max_capacity < element_count)
+        return false;
+
+    new_capacity = max(*capacity, 4);
+    while (new_capacity < element_count && new_capacity <= max_capacity / 2)
+        new_capacity *= 2;
+
+    if (new_capacity < element_count)
+        new_capacity = element_count;
+
+    if (!(new_elements = realloc(*elements, new_capacity * element_size)))
+        return false;
+
+    *elements = new_elements;
+    *capacity = new_capacity;
+
+    return true;
+}
+
+#endif