gpu/vulkan: Add binding for vkGetMemoryZirconHandleFUCHSIA

This function is needed for GL/Vulkan interop on Fuchsia.

Bug: 766360

Change-Id: I37645fc29fbadd49f48eefbaf4849daa1be82a91
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2069178
Commit-Queue: Michael Spang <spang@chromium.org>
Reviewed-by: Peng Huang <penghuang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#743820}

gpu/vulkan/generate_bindings.py

@@ -188,6 +188,13 @@ VULKAN_DEVICE_FUNCTIONS = [
       'vkGetSemaphoreZirconHandleFUCHSIA',
     ]
   },
+  {
+    'ifdef': 'defined(OS_FUCHSIA)',
+    'extension': 'VK_FUCHSIA_EXTERNAL_MEMORY_EXTENSION_NAME',
+    'functions': [
+      'vkGetMemoryZirconHandleFUCHSIA',
+    ]
+  },
   {
     'ifdef': 'defined(OS_FUCHSIA)',
     'extension': 'VK_FUCHSIA_BUFFER_COLLECTION_EXTENSION_NAME',

gpu/vulkan/vulkan_function_pointers.cc

@@ -850,6 +850,20 @@ bool VulkanFunctionPointers::BindDeviceFunctionPointers(
   }
 #endif  // defined(OS_FUCHSIA)
 
+#if defined(OS_FUCHSIA)
+  if (gfx::HasExtension(enabled_extensions,
+                        VK_FUCHSIA_EXTERNAL_MEMORY_EXTENSION_NAME)) {
+    vkGetMemoryZirconHandleFUCHSIAFn =
+        reinterpret_cast<PFN_vkGetMemoryZirconHandleFUCHSIA>(
+            vkGetDeviceProcAddrFn(vk_device, "vkGetMemoryZirconHandleFUCHSIA"));
+    if (!vkGetMemoryZirconHandleFUCHSIAFn) {
+      DLOG(WARNING) << "Failed to bind vulkan entrypoint: "
+                    << "vkGetMemoryZirconHandleFUCHSIA";
+      return false;
+    }
+  }
+#endif  // defined(OS_FUCHSIA)
+
 #if defined(OS_FUCHSIA)
   if (gfx::HasExtension(enabled_extensions,
                         VK_FUCHSIA_BUFFER_COLLECTION_EXTENSION_NAME)) {

gpu/vulkan/vulkan_function_pointers.h

@@ -197,6 +197,10 @@ struct VulkanFunctionPointers {
       nullptr;
 #endif  // defined(OS_FUCHSIA)
 
+#if defined(OS_FUCHSIA)
+  PFN_vkGetMemoryZirconHandleFUCHSIA vkGetMemoryZirconHandleFUCHSIAFn = nullptr;
+#endif  // defined(OS_FUCHSIA)
+
 #if defined(OS_FUCHSIA)
   PFN_vkCreateBufferCollectionFUCHSIA vkCreateBufferCollectionFUCHSIAFn =
       nullptr;
@@ -398,6 +402,11 @@ struct VulkanFunctionPointers {
   gpu::GetVulkanFunctionPointers()->vkGetSemaphoreZirconHandleFUCHSIAFn
 #endif  // defined(OS_FUCHSIA)
 
+#if defined(OS_FUCHSIA)
+#define vkGetMemoryZirconHandleFUCHSIA \
+  gpu::GetVulkanFunctionPointers()->vkGetMemoryZirconHandleFUCHSIAFn
+#endif  // defined(OS_FUCHSIA)
+
 #if defined(OS_FUCHSIA)
 #define vkCreateBufferCollectionFUCHSIA \
   gpu::GetVulkanFunctionPointers()->vkCreateBufferCollectionFUCHSIAFn