Mesa (master): anv: Return correct result in EnumeratePhysicalDevices

[Jason Ekstrand]

Module: Mesa
Branch: master
Commit: fd27d5fd92b0ea42854edc59768e2e04709e179a
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=fd27d5fd92b0ea42854edc59768e2e04709e179a

Author: Nicolas Koch <nioko1337 at gmail.com>
Date:   Thu Oct  6 21:21:32 2016 +0200

anv: Return correct result in EnumeratePhysicalDevices

If pPhysicalDevices is too small for all physical devices,
the driver must return VK_INCOMPLETE.
Since only a single physical device is supported, this is only the case
when pPhysicalDeviceCount == 0 && pPhysicalDevices != NULL.

Reviewed-by: Anuj Phogat <anuj.phogat at gmail.com>
Reviewed-by: Jason Ekstrand <jason at jlekstrand.net>

---

 src/intel/vulkan/anv_device.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/intel/vulkan/anv_device.c b/src/intel/vulkan/anv_device.c
index 02246ba..24f7227 100644
--- a/src/intel/vulkan/anv_device.c
+++ b/src/intel/vulkan/anv_device.c
@@ -385,6 +385,8 @@ VkResult anv_EnumeratePhysicalDevices(
    } else if (*pPhysicalDeviceCount >= 1) {
       pPhysicalDevices[0] = anv_physical_device_to_handle(&instance->physicalDevice);
       *pPhysicalDeviceCount = 1;
+   } else if (*pPhysicalDeviceCount < instance->physicalDeviceCount) {
+      return VK_INCOMPLETE;
    } else {
       *pPhysicalDeviceCount = 0;
    }