This extension is required to support EXT_display_control as it offers
a way to query whether the vblank counter is supported.

v4: Add anv support

Signed-off-by: Keith Packard <kei...@keithp.com>
---
 src/intel/vulkan/anv_extensions.py |  1 +
 src/intel/vulkan/anv_wsi.c         | 12 ++++++++++++
 2 files changed, 13 insertions(+)

diff --git a/src/intel/vulkan/anv_extensions.py 
b/src/intel/vulkan/anv_extensions.py
index 47993f45d41..32643e31045 100644
--- a/src/intel/vulkan/anv_extensions.py
+++ b/src/intel/vulkan/anv_extensions.py
@@ -89,6 +89,7 @@ EXTENSIONS = [
     Extension('VK_KHX_multiview',                         1, True),
     Extension('VK_EXT_debug_report',                      8, True),
     Extension('VK_EXT_external_memory_dma_buf',           1, True),
+    Extension('VK_EXT_display_surface_counter',           1, 
'VK_USE_PLATFORM_DISPLAY_KHR'),
 ]
 
 class VkVersion:
diff --git a/src/intel/vulkan/anv_wsi.c b/src/intel/vulkan/anv_wsi.c
index f86d83589ea..52362adfb71 100644
--- a/src/intel/vulkan/anv_wsi.c
+++ b/src/intel/vulkan/anv_wsi.c
@@ -104,6 +104,18 @@ VkResult anv_GetPhysicalDeviceSurfaceCapabilities2KHR(
                                                pSurfaceCapabilities);
 }
 
+VkResult anv_GetPhysicalDeviceSurfaceCapabilities2EXT(
+       VkPhysicalDevice                            physicalDevice,
+       VkSurfaceKHR                                surface,
+       VkSurfaceCapabilities2EXT*                  pSurfaceCapabilities)
+{
+   ANV_FROM_HANDLE(anv_physical_device, device, physicalDevice);
+
+   return wsi_common_get_surface_capabilities2ext(&device->wsi_device,
+                                                  surface,
+                                                  pSurfaceCapabilities);
+}
+
 VkResult anv_GetPhysicalDeviceSurfaceFormatsKHR(
     VkPhysicalDevice                            physicalDevice,
     VkSurfaceKHR                                surface,
-- 
2.15.1

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