From e1761cc6385ef0332e4d8d3259f7b9ee3af1171e Mon Sep 17 00:00:00 2001
From: Courtney Goeltzenleuchter <courtney@LunarG.com>
Date: Mon, 6 Jul 2015 17:45:08 -0600
Subject: loader: Validate global layers requested by app

---
 loader/loader.c     | 22 ++++++++++++++++++++++
 loader/loader.h     |  7 ++++++-
 loader/trampoline.c | 10 ++++++++++
 3 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/loader/loader.c b/loader/loader.c
index 62584ac0..b8454575 100644
--- a/loader/loader.c
+++ b/loader/loader.c
@@ -2227,6 +2227,28 @@ static uint32_t loader_activate_device_layers(
     return dev->activated_layer_list.count;
 }
 
+VkResult loader_validate_instance_layers(
+        const VkInstanceCreateInfo*     pCreateInfo)
+{
+    struct loader_layer_properties *prop;
+
+    for (uint32_t i = 0; i < pCreateInfo->layerCount; i++) {
+        prop = get_layer_property(pCreateInfo->ppEnabledLayerNames[i],
+                                  &loader.global_layer_list);
+        if (!prop) {
+            return VK_ERROR_INVALID_LAYER;
+        }
+    }
+
+    return VK_SUCCESS;
+}
+
+VkResult loader_validate_instance_extensions(
+        const VkInstanceCreateInfo*     pCreateInfo)
+{
+    return VK_SUCCESS;
+}
+
 VkResult loader_CreateInstance(
         const VkInstanceCreateInfo*     pCreateInfo,
         VkInstance*                     pInstance)
diff --git a/loader/loader.h b/loader/loader.h
index a336238a..8982bf17 100644
--- a/loader/loader.h
+++ b/loader/loader.h
@@ -335,6 +335,12 @@ bool compare_vk_extension_properties(
         const VkExtensionProperties*            op1,
         const VkExtensionProperties*            op2);
 
+VkResult loader_validate_instance_layers(
+        const VkInstanceCreateInfo*             pCreateInfo);
+
+VkResult loader_validate_instance_extensions(
+        const VkInstanceCreateInfo*             pCreateInfo);
+
 /* instance layer chain termination entrypoint definitions */
 VkResult loader_CreateInstance(
         const VkInstanceCreateInfo*             pCreateInfo,
@@ -415,7 +421,6 @@ void loader_add_to_layer_list(
         struct loader_layer_list *list,
         uint32_t prop_list_count,
         const struct loader_layer_properties *props);
-bool loader_is_extension_scanned(const VkExtensionProperties *ext_prop);
 void loader_icd_scan(void);
 void loader_layer_scan(void);
 void loader_coalesce_extensions(void);
diff --git a/loader/trampoline.c b/loader/trampoline.c
index 0afa9e1d..b3df9bd3 100644
--- a/loader/trampoline.c
+++ b/loader/trampoline.c
@@ -53,6 +53,16 @@ LOADER_EXPORT VkResult VKAPI vkCreateInstance(
     /* merge any duplicate extensions */
     loader_platform_thread_once(&once_exts, loader_coalesce_extensions);
 
+    res = loader_validate_instance_layers(pCreateInfo);
+    if (res != VK_SUCCESS) {
+        return res;
+    }
+
+    res = loader_validate_instance_extensions(pCreateInfo);
+    if (res != VK_SUCCESS) {
+        return res;
+    }
+
     if (pCreateInfo->pAllocCb
             && pCreateInfo->pAllocCb->pfnAlloc
             && pCreateInfo->pAllocCb->pfnFree) {
-- 
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