1 files changed, 56 insertions, 0 deletions
diff --git a/lib/mesa/src/vulkan/util/vk_descriptors.c b/lib/mesa/src/vulkan/util/vk_descriptors.c
new file mode 100644
index 000000000..7aee7e821
--- /dev/null
+++ b/lib/mesa/src/vulkan/util/vk_descriptors.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright © 2016 Red Hat.
+ * Copyright © 2016 Bas Nieuwenhuizen
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include "vk_descriptors.h"
+#include "util/macros.h"
+
+static int
+binding_compare(const void* av, const void *bv)
+{
+   const VkDescriptorSetLayoutBinding *a = (const VkDescriptorSetLayoutBinding*)av;
+   const VkDescriptorSetLayoutBinding *b = (const VkDescriptorSetLayoutBinding*)bv;
+ 
+   return (a->binding < b->binding) ? -1 : (a->binding > b->binding) ? 1 : 0;
+}
+ 
+VkResult
+vk_create_sorted_bindings(const VkDescriptorSetLayoutBinding *bindings, unsigned count,
+                          VkDescriptorSetLayoutBinding **sorted_bindings)
+{
+   if (!count) {
+      *sorted_bindings = NULL;
+      return VK_SUCCESS;
+   }
+
+   *sorted_bindings = malloc(count * sizeof(VkDescriptorSetLayoutBinding));
+   if (!*sorted_bindings)
+      return VK_ERROR_OUT_OF_HOST_MEMORY;
+
+   memcpy(*sorted_bindings, bindings, count * sizeof(VkDescriptorSetLayoutBinding));
+   qsort(*sorted_bindings, count, sizeof(VkDescriptorSetLayoutBinding), binding_compare);
+ 
+   return VK_SUCCESS;
+}