Port of 1e41d7f7b0855934744fe578ba4eae9209ee69f7:
"anv: Support loader interface version 3 (patch v2)"
Signed-off-by: Bas Nieuwenhuizen <ba...@google.com>
Cc: mesa-sta...@lists.freedesktop.org
---
src/amd/vulkan/radv_device.c | 45 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/src/amd/vulkan/radv_device.c b/src/amd/vulkan/radv_device.c
index 05d8888ac8f..64fbce8ce65 100644
--- a/src/amd/vulkan/radv_device.c
+++ b/src/amd/vulkan/radv_device.c
@@ -2032,3 +2032,48 @@ void radv_DestroySampler(
return;
vk_free2(&device->alloc, pAllocator, sampler);
}
+
+
+/* vk_icd.h does not declare this function, so we declare it here to
+ * suppress Wmissing-prototypes.
+ */
+PUBLIC VKAPI_ATTR VkResult VKAPI_CALL
+vk_icdNegotiateLoaderICDInterfaceVersion(uint32_t *pSupportedVersion);
+
+PUBLIC VKAPI_ATTR VkResult VKAPI_CALL
+vk_icdNegotiateLoaderICDInterfaceVersion(uint32_t *pSupportedVersion)
+{
+ /* For the full details on loader interface versioning, see
+ *
<https://github.com/KhronosGroup/Vulkan-LoaderAndValidationLayers/blob/master/loader/LoaderAndLayerInterface.md>.
+ * What follows is a condensed summary, to help you navigate the large
and
+ * confusing official doc.
+ *
+ * - Loader interface v0 is incompatible with later versions. We don't
+ * support it.
+ *
+ * - In loader interface v1:
+ * - The first ICD entrypoint called by the loader is
+ * vk_icdGetInstanceProcAddr(). The ICD must statically expose
this
+ * entrypoint.
+ * - The ICD must statically expose no other Vulkan symbol unless
it is
+ * linked with -Bsymbolic.
+ * - Each dispatchable Vulkan handle created by the ICD must be
+ * a pointer to a struct whose first member is VK_LOADER_DATA.
The
+ * ICD must initialize VK_LOADER_DATA.loadMagic to
ICD_LOADER_MAGIC.
+ * - The loader implements vkCreate{PLATFORM}SurfaceKHR() and
+ * vkDestroySurfaceKHR(). The ICD must be capable of working with
+ * such loader-managed surfaces.
+ *
+ * - Loader interface v2 differs from v1 in:
+ * - The first ICD entrypoint called by the loader is
+ * vk_icdNegotiateLoaderICDInterfaceVersion(). The ICD must
+ * statically expose this entrypoint.
+ *
+ * - Loader interface v3 differs from v2 in:
+ * - The ICD must implement vkCreate{PLATFORM}SurfaceKHR(),
+ * vkDestroySurfaceKHR(), and other API which uses VKSurfaceKHR,
+ * because the loader no longer does so.
+ */
+ *pSupportedVersion = MIN2(*pSupportedVersion, 3u);
+ return VK_SUCCESS;
+}
--
2.11.0
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