diff --git a/vulkan/nulldrv/null_driver.cpp b/vulkan/nulldrv/null_driver.cpp
index 3bf3ff7..05ebcac 100644
--- a/vulkan/nulldrv/null_driver.cpp
+++ b/vulkan/nulldrv/null_driver.cpp
@@ -1334,7 +1334,7 @@
 void CmdCopyImageToBuffer(VkCommandBuffer cmdBuffer, VkImage srcImage, VkImageLayout srcImageLayout, VkBuffer destBuffer, uint32_t regionCount, const VkBufferImageCopy* pRegions) {
 }
 
-void CmdUpdateBuffer(VkCommandBuffer cmdBuffer, VkBuffer destBuffer, VkDeviceSize destOffset, VkDeviceSize dataSize, const uint32_t* pData) {
+void CmdUpdateBuffer(VkCommandBuffer cmdBuffer, VkBuffer destBuffer, VkDeviceSize destOffset, VkDeviceSize dataSize, const void* pData) {
 }
 
 void CmdFillBuffer(VkCommandBuffer cmdBuffer, VkBuffer destBuffer, VkDeviceSize destOffset, VkDeviceSize fillSize, uint32_t data) {
diff --git a/vulkan/nulldrv/null_driver.tmpl b/vulkan/nulldrv/null_driver.tmpl
index 3a84971..209d61d 100644
--- a/vulkan/nulldrv/null_driver.tmpl
+++ b/vulkan/nulldrv/null_driver.tmpl
@@ -158,16 +158,7 @@
 }
 ¶
 PFN_vkVoidFunction GetInstanceProcAddr(const char* name) {«
-    PFN_vkVoidFunction pfn;
-    if ((pfn = Lookup(name, kInstanceProcs)))
-        return pfn;
-    if (strcmp(name, "vkGetSwapchainGrallocUsageANDROID") == 0)
-        return reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkGetSwapchainGrallocUsageANDROID>(GetSwapchainGrallocUsageANDROID));
-    if (strcmp(name, "vkAcquireImageANDROID") == 0)
-        return reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkAcquireImageANDROID>(AcquireImageANDROID));
-    if (strcmp(name, "vkQueueSignalReleaseImageANDROID") == 0)
-        return reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkQueueSignalReleaseImageANDROID>(QueueSignalReleaseImageANDROID));
-    return nullptr;
+    return Lookup(name, kInstanceProcs);
 »}
 ¶
 } // namespace null_driver
diff --git a/vulkan/nulldrv/null_driver_gen.cpp b/vulkan/nulldrv/null_driver_gen.cpp
index 10da993..b078ad1 100644
--- a/vulkan/nulldrv/null_driver_gen.cpp
+++ b/vulkan/nulldrv/null_driver_gen.cpp
@@ -54,6 +54,7 @@
 
 const NameProc kInstanceProcs[] = {
     // clang-format off
+    {"vkAcquireImageANDROID", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkAcquireImageANDROID>(AcquireImageANDROID))},
     {"vkAllocateCommandBuffers", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkAllocateCommandBuffers>(AllocateCommandBuffers))},
     {"vkAllocateDescriptorSets", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkAllocateDescriptorSets>(AllocateDescriptorSets))},
     {"vkAllocateMemory", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkAllocateMemory>(AllocateMemory))},
@@ -179,10 +180,12 @@
     {"vkGetPipelineCacheData", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkGetPipelineCacheData>(GetPipelineCacheData))},
     {"vkGetQueryPoolResults", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkGetQueryPoolResults>(GetQueryPoolResults))},
     {"vkGetRenderAreaGranularity", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkGetRenderAreaGranularity>(GetRenderAreaGranularity))},
+    {"vkGetSwapchainGrallocUsageANDROID", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkGetSwapchainGrallocUsageANDROID>(GetSwapchainGrallocUsageANDROID))},
     {"vkInvalidateMappedMemoryRanges", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkInvalidateMappedMemoryRanges>(InvalidateMappedMemoryRanges))},
     {"vkMapMemory", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkMapMemory>(MapMemory))},
     {"vkMergePipelineCaches", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkMergePipelineCaches>(MergePipelineCaches))},
     {"vkQueueBindSparse", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkQueueBindSparse>(QueueBindSparse))},
+    {"vkQueueSignalReleaseImageANDROID", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkQueueSignalReleaseImageANDROID>(QueueSignalReleaseImageANDROID))},
     {"vkQueueSubmit", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkQueueSubmit>(QueueSubmit))},
     {"vkQueueWaitIdle", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkQueueWaitIdle>(QueueWaitIdle))},
     {"vkResetCommandBuffer", reinterpret_cast<PFN_vkVoidFunction>(static_cast<PFN_vkResetCommandBuffer>(ResetCommandBuffer))},
@@ -206,21 +209,7 @@
 }
 
 PFN_vkVoidFunction GetInstanceProcAddr(const char* name) {
-    PFN_vkVoidFunction pfn;
-    if ((pfn = Lookup(name, kInstanceProcs)))
-        return pfn;
-    if (strcmp(name, "vkGetSwapchainGrallocUsageANDROID") == 0)
-        return reinterpret_cast<PFN_vkVoidFunction>(
-            static_cast<PFN_vkGetSwapchainGrallocUsageANDROID>(
-                GetSwapchainGrallocUsageANDROID));
-    if (strcmp(name, "vkAcquireImageANDROID") == 0)
-        return reinterpret_cast<PFN_vkVoidFunction>(
-            static_cast<PFN_vkAcquireImageANDROID>(AcquireImageANDROID));
-    if (strcmp(name, "vkQueueSignalReleaseImageANDROID") == 0)
-        return reinterpret_cast<PFN_vkVoidFunction>(
-            static_cast<PFN_vkQueueSignalReleaseImageANDROID>(
-                QueueSignalReleaseImageANDROID));
-    return nullptr;
+    return Lookup(name, kInstanceProcs);
 }
 
 }  // namespace null_driver
diff --git a/vulkan/nulldrv/null_driver_gen.h b/vulkan/nulldrv/null_driver_gen.h
index 98952b8..4052d26 100644
--- a/vulkan/nulldrv/null_driver_gen.h
+++ b/vulkan/nulldrv/null_driver_gen.h
@@ -145,7 +145,7 @@
 VKAPI_ATTR void CmdBlitImage(VkCommandBuffer commandBuffer, VkImage srcImage, VkImageLayout srcImageLayout, VkImage dstImage, VkImageLayout dstImageLayout, uint32_t regionCount, const VkImageBlit* pRegions, VkFilter filter);
 VKAPI_ATTR void CmdCopyBufferToImage(VkCommandBuffer commandBuffer, VkBuffer srcBuffer, VkImage dstImage, VkImageLayout dstImageLayout, uint32_t regionCount, const VkBufferImageCopy* pRegions);
 VKAPI_ATTR void CmdCopyImageToBuffer(VkCommandBuffer commandBuffer, VkImage srcImage, VkImageLayout srcImageLayout, VkBuffer dstBuffer, uint32_t regionCount, const VkBufferImageCopy* pRegions);
-VKAPI_ATTR void CmdUpdateBuffer(VkCommandBuffer commandBuffer, VkBuffer dstBuffer, VkDeviceSize dstOffset, VkDeviceSize dataSize, const uint32_t* pData);
+VKAPI_ATTR void CmdUpdateBuffer(VkCommandBuffer commandBuffer, VkBuffer dstBuffer, VkDeviceSize dstOffset, VkDeviceSize dataSize, const void* pData);
 VKAPI_ATTR void CmdFillBuffer(VkCommandBuffer commandBuffer, VkBuffer dstBuffer, VkDeviceSize dstOffset, VkDeviceSize size, uint32_t data);
 VKAPI_ATTR void CmdClearColorImage(VkCommandBuffer commandBuffer, VkImage image, VkImageLayout imageLayout, const VkClearColorValue* pColor, uint32_t rangeCount, const VkImageSubresourceRange* pRanges);
 VKAPI_ATTR void CmdClearDepthStencilImage(VkCommandBuffer commandBuffer, VkImage image, VkImageLayout imageLayout, const VkClearDepthStencilValue* pDepthStencil, uint32_t rangeCount, const VkImageSubresourceRange* pRanges);
@@ -165,6 +165,9 @@
 VKAPI_ATTR void CmdNextSubpass(VkCommandBuffer commandBuffer, VkSubpassContents contents);
 VKAPI_ATTR void CmdEndRenderPass(VkCommandBuffer commandBuffer);
 VKAPI_ATTR void CmdExecuteCommands(VkCommandBuffer commandBuffer, uint32_t commandBufferCount, const VkCommandBuffer* pCommandBuffers);
+VKAPI_ATTR VkResult GetSwapchainGrallocUsageANDROID(VkDevice device, VkFormat format, VkImageUsageFlags imageUsage, int* grallocUsage);
+VKAPI_ATTR VkResult AcquireImageANDROID(VkDevice device, VkImage image, int nativeFenceFd, VkSemaphore semaphore, VkFence fence);
+VKAPI_ATTR VkResult QueueSignalReleaseImageANDROID(VkQueue queue, uint32_t waitSemaphoreCount, const VkSemaphore* pWaitSemaphores, VkImage image, int* pNativeFenceFd);
 VKAPI_ATTR VkResult CreateDebugReportCallbackEXT(VkInstance instance, const VkDebugReportCallbackCreateInfoEXT* pCreateInfo, const VkAllocationCallbacks* pAllocator, VkDebugReportCallbackEXT* pCallback);
 VKAPI_ATTR void DestroyDebugReportCallbackEXT(VkInstance instance, VkDebugReportCallbackEXT callback, const VkAllocationCallbacks* pAllocator);
 VKAPI_ATTR void DebugReportMessageEXT(VkInstance instance, VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, uint64_t object, size_t location, int32_t messageCode, const char* pLayerPrefix, const char* pMessage);