Mesa (master): anv: implement ICD interface v4

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Module: Mesa
Branch: master
Commit: 3c1a24de076ac47417d8942e3d8c7168006fc94f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=3c1a24de076ac47417d8942e3d8c7168006fc94f

Author: Eric Engestrom <eric.engestrom at intel.com>
Date:   Sun Sep  8 00:11:01 2019 +0300

anv: implement ICD interface v4

Signed-off-by: Eric Engestrom <eric.engestrom at intel.com>
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
Reviewed-by: Jason Ekstrand <jason at jlekstrand.net>

---

 src/intel/vulkan/anv_device.c | 30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/src/intel/vulkan/anv_device.c b/src/intel/vulkan/anv_device.c
index 391a5576306..7382f057629 100644
--- a/src/intel/vulkan/anv_device.c
+++ b/src/intel/vulkan/anv_device.c
@@ -2021,6 +2021,31 @@ PFN_vkVoidFunction anv_GetDeviceProcAddr(
    return device->dispatch.entrypoints[idx];
 }
 
+/* With version 4+ of the loader interface the ICD should expose
+ * vk_icdGetPhysicalDeviceProcAddr()
+ */
+PUBLIC
+VKAPI_ATTR PFN_vkVoidFunction VKAPI_CALL vk_icdGetPhysicalDeviceProcAddr(
+    VkInstance  _instance,
+    const char* pName);
+
+PFN_vkVoidFunction vk_icdGetPhysicalDeviceProcAddr(
+    VkInstance  _instance,
+    const char* pName)
+{
+   ANV_FROM_HANDLE(anv_instance, instance, _instance);
+
+   if (!pName || !instance)
+      return NULL;
+
+   int idx = anv_get_physical_device_entrypoint_index(pName);
+   if (idx < 0)
+      return NULL;
+
+   return instance->physicalDevice.dispatch.entrypoints[idx];
+}
+
+
 VkResult
 anv_CreateDebugReportCallbackEXT(VkInstance _instance,
                                  const VkDebugReportCallbackCreateInfoEXT* pCreateInfo,
@@ -4090,7 +4115,10 @@ vk_icdNegotiateLoaderICDInterfaceVersion(uint32_t* pSupportedVersion)
     *        - The ICD must implement vkCreate{PLATFORM}SurfaceKHR(),
     *          vkDestroySurfaceKHR(), and other API which uses VKSurfaceKHR,
     *          because the loader no longer does so.
+    *
+    *    - Loader interface v4 differs from v3 in:
+    *        - The ICD must implement vk_icdGetPhysicalDeviceProcAddr().
     */
-   *pSupportedVersion = MIN2(*pSupportedVersion, 3u);
+   *pSupportedVersion = MIN2(*pSupportedVersion, 4u);
    return VK_SUCCESS;
 }