diff --git a/vulkan/api/templates/vulkan_h.tmpl b/vulkan/api/templates/vulkan_h.tmpl
index 2dee541..c55107d 100644
--- a/vulkan/api/templates/vulkan_h.tmpl
+++ b/vulkan/api/templates/vulkan_h.tmpl
@@ -53,7 +53,7 @@
 #define VK_API_VERSION \
     VK_MAKE_VERSION({{Global "VERSION_MAJOR"}}, {{Global "VERSION_MINOR"}}, {{Global "VERSION_PATCH"}})
 ¶
-#if defined(__cplusplus) && (_MSC_VER >= 1800 || __cplusplus >= 201103L)
+#if defined(__cplusplus) && ((defined(_MSC_VER) && _MSC_VER >= 1800 || __cplusplus >= 201103L)
     #define VK_NULL_HANDLE nullptr
 #else
     #define VK_NULL_HANDLE 0
diff --git a/vulkan/api/vulkan.api b/vulkan/api/vulkan.api
index 7ab0e86..2b499fd 100644
--- a/vulkan/api/vulkan.api
+++ b/vulkan/api/vulkan.api
@@ -27,7 +27,7 @@
 
 // API version (major.minor.patch)
 define VERSION_MAJOR 0
-define VERSION_MINOR 174
+define VERSION_MINOR 177
 define VERSION_PATCH 0
 
 // API limits
@@ -695,8 +695,7 @@
     VK_MEMORY_PROPERTY_HOST_NON_COHERENT_BIT                = 0x00000002,    /// Memory may not have i/o coherency so vkFlushMappedMemoryRanges and vkInvalidateMappedMemoryRanges must be used flush/invalidate host cache
                                                                              /// vkInvalidateMappedMemoryRanges must be used flush/invalidate host cache
     VK_MEMORY_PROPERTY_HOST_UNCACHED_BIT                    = 0x00000004,    /// Memory should not be cached by the host
-    VK_MEMORY_PROPERTY_HOST_WRITE_COMBINED_BIT              = 0x00000008,    /// Memory should support host write combining
-    VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT                 = 0x00000010,    /// Memory may be allocated by the driver when it is required
+    VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT                 = 0x00000008,    /// Memory may be allocated by the driver when it is required
 }
 
 /// Memory heap flags
@@ -932,7 +931,6 @@
 
 /// Subpass description flags
 bitfield VkSubpassDescriptionFlags {
-    VK_SUBPASS_DESCRIPTION_NO_OVERDRAW_BIT                  = 0x00000001,
 }
 
 /// Command pool creation flags
@@ -1108,7 +1106,7 @@
 class VkQueueFamilyProperties {
     VkQueueFlags                                queueFlags                 /// Queue flags
     u32                                         queueCount
-    VkBool32                                    supportsTimestamps
+    u32                                         timestampValidBits
 }
 
 class VkPhysicalDeviceMemoryProperties {
@@ -1522,6 +1520,8 @@
     VkBool32                                    sampleShadingEnable        /// optional (GL45)
     f32                                         minSampleShading           /// optional (GL45)
     const VkSampleMask*                         pSampleMask
+    VkBool32                                    alphaToCoverageEnable
+    VkBool32                                    alphaToOneEnable
 }
 
 class VkPipelineColorBlendAttachmentState {
@@ -1538,8 +1538,6 @@
 class VkPipelineColorBlendStateCreateInfo {
     VkStructureType                             sType      /// Must be VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO
     const void*                                 pNext      /// Pointer to next structure
-    VkBool32                                    alphaToCoverageEnable
-    VkBool32                                    alphaToOneEnable
     VkBool32                                    logicOpEnable
     VkLogicOp                                   logicOp
     u32                                         attachmentCount    /// # of pAttachments
diff --git a/vulkan/include/vulkan/vulkan.h b/vulkan/include/vulkan/vulkan.h
index 5d884cd..124d088 100644
--- a/vulkan/include/vulkan/vulkan.h
+++ b/vulkan/include/vulkan/vulkan.h
@@ -41,10 +41,10 @@
     ((major << 22) | (minor << 12) | patch)
 
 // Vulkan API version supported by this file
-#define VK_API_VERSION VK_MAKE_VERSION(0, 174, 0)
+#define VK_API_VERSION VK_MAKE_VERSION(0, 177, 0)
 
 
-#if defined(__cplusplus) && (_MSC_VER >= 1800 || __cplusplus >= 201103L)
+#if defined(__cplusplus) && ((defined(_MSC_VER) && _MSC_VER >= 1800) || __cplusplus >= 201103L)
     #define VK_NULL_HANDLE nullptr
 #else
     #define VK_NULL_HANDLE 0
@@ -711,10 +711,10 @@
     VK_TEX_ADDRESS_MODE_CLAMP = 2,
     VK_TEX_ADDRESS_MODE_MIRROR_ONCE = 3,
     VK_TEX_ADDRESS_MODE_CLAMP_BORDER = 4,
-    VK_TEX_ADDRESS_BEGIN_RANGE = VK_TEX_ADDRESS_MODE_WRAP,
-    VK_TEX_ADDRESS_END_RANGE = VK_TEX_ADDRESS_MODE_CLAMP_BORDER,
-    VK_TEX_ADDRESS_NUM = (VK_TEX_ADDRESS_MODE_CLAMP_BORDER - VK_TEX_ADDRESS_MODE_WRAP + 1),
-    VK_TEX_ADDRESS_MAX_ENUM = 0x7FFFFFFF
+    VK_TEX_ADDRESS_MODE_BEGIN_RANGE = VK_TEX_ADDRESS_MODE_WRAP,
+    VK_TEX_ADDRESS_MODE_END_RANGE = VK_TEX_ADDRESS_MODE_CLAMP_BORDER,
+    VK_TEX_ADDRESS_MODE_NUM = (VK_TEX_ADDRESS_MODE_CLAMP_BORDER - VK_TEX_ADDRESS_MODE_WRAP + 1),
+    VK_TEX_ADDRESS_MODE_MAX_ENUM = 0x7FFFFFFF
 } VkTexAddressMode;
 
 typedef enum {
@@ -893,8 +893,7 @@
     VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT = 0x00000001,
     VK_MEMORY_PROPERTY_HOST_NON_COHERENT_BIT = 0x00000002,
     VK_MEMORY_PROPERTY_HOST_UNCACHED_BIT = 0x00000004,
-    VK_MEMORY_PROPERTY_HOST_WRITE_COMBINED_BIT = 0x00000008,
-    VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT = 0x00000010,
+    VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT = 0x00000008,
 } VkMemoryPropertyFlagBits;
 typedef VkFlags VkMemoryPropertyFlags;
 
@@ -1013,10 +1012,6 @@
     VK_ATTACHMENT_DESCRIPTION_MAY_ALIAS_BIT = 0x00000001,
 } VkAttachmentDescriptionFlagBits;
 typedef VkFlags VkAttachmentDescriptionFlags;
-
-typedef enum {
-    VK_SUBPASS_DESCRIPTION_NO_OVERDRAW_BIT = 0x00000001,
-} VkSubpassDescriptionFlagBits;
 typedef VkFlags VkSubpassDescriptionFlags;
 
 typedef enum {
@@ -1336,7 +1331,7 @@
 typedef struct {
     VkQueueFlags                                queueFlags;
     uint32_t                                    queueCount;
-    VkBool32                                    supportsTimestamps;
+    uint32_t                                    timestampValidBits;
 } VkQueueFamilyProperties;
 
 typedef struct {
@@ -1684,6 +1679,8 @@
     VkBool32                                    sampleShadingEnable;
     float                                       minSampleShading;
     const VkSampleMask*                         pSampleMask;
+    VkBool32                                    alphaToCoverageEnable;
+    VkBool32                                    alphaToOneEnable;
 } VkPipelineMultisampleStateCreateInfo;
 
 typedef struct {
@@ -1724,8 +1721,6 @@
 typedef struct {
     VkStructureType                             sType;
     const void*                                 pNext;
-    VkBool32                                    alphaToCoverageEnable;
-    VkBool32                                    alphaToOneEnable;
     VkBool32                                    logicOpEnable;
     VkLogicOp                                   logicOp;
     uint32_t                                    attachmentCount;
diff --git a/vulkan/nulldrv/null_driver.cpp b/vulkan/nulldrv/null_driver.cpp
index 9d028eb..8992db4 100644
--- a/vulkan/nulldrv/null_driver.cpp
+++ b/vulkan/nulldrv/null_driver.cpp
@@ -288,7 +288,7 @@
         properties->queueFlags =
             VK_QUEUE_GRAPHICS_BIT | VK_QUEUE_COMPUTE_BIT | VK_QUEUE_DMA_BIT;
         properties->queueCount = 1;
-        properties->supportsTimestamps = VK_FALSE;
+        properties->timestampValidBits = 64;
     }
     *count = 1;
     return VK_SUCCESS;
diff --git a/vulkan/tools/vkinfo.cpp b/vulkan/tools/vkinfo.cpp
index 583e607..2af04ad 100644
--- a/vulkan/tools/vkinfo.cpp
+++ b/vulkan/tools/vkinfo.cpp
@@ -124,8 +124,6 @@
                 strbuf << " NON_COHERENT";
             if ((flags & VK_MEMORY_PROPERTY_HOST_UNCACHED_BIT) != 0)
                 strbuf << " UNCACHED";
-            if ((flags & VK_MEMORY_PROPERTY_HOST_WRITE_COMBINED_BIT) != 0)
-                strbuf << " WRITE_COMBINED";
             if ((flags & VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT) != 0)
                 strbuf << " LAZILY_ALLOCATED";
             printf("       Type %u: %s\n", type, strbuf.str().c_str());
@@ -154,9 +152,9 @@
             queue_flags &= ~flag;
             sep = "+";
         }
-        printf("     Queue Family %u: %2ux %s timestamps:%s\n", family,
+        printf("     Queue Family %u: %2ux %s timestamps:%ub\n", family,
                qprops.queueCount, strbuf.str().c_str(),
-               qprops.supportsTimestamps ? "YES" : "NO");
+               qprops.timestampValidBits);
         strbuf.str(std::string());
     }
 }