zink: hook up VK_EXT_legacy_vertex_attributes

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29069>

src/gallium/drivers/zink/VP_ZINK_requirements.json

@@ -447,7 +447,8 @@
             "extensions": {
                 "VK_EXT_provoking_vertex": 1,
                 "VK_KHR_dynamic_rendering": 1,
-                "VK_EXT_dynamic_rendering_unused_attachments": 1
+                "VK_EXT_dynamic_rendering_unused_attachments": 1,
+                "VK_EXT_legacy_vertex_attributes": 1
             },
             "features": {
                 "VkPhysicalDeviceDynamicRenderingFeatures": {
@@ -455,6 +456,9 @@
                 },
                 "VkPhysicalDeviceDynamicRenderingUnusedAttachmentsFeaturesEXT": {
                     "dynamicRenderingUnusedAttachments": true
+                },
+                "VkPhysicalDeviceLegacyVertexAttributesFeaturesEXT": {
+                    "legacyVertexAttributes": true
                 }
             }
         },

src/gallium/drivers/zink/zink_device_info.py

@@ -111,6 +111,7 @@ EXTENSIONS = [
               features=True),
     Extension("VK_EXT_shader_subgroup_ballot"),
     Extension("VK_EXT_shader_subgroup_vote"),
+    Extension("VK_EXT_legacy_vertex_attributes", alias="legacyverts", features=True, properties=True),
     Extension("VK_EXT_shader_atomic_float",
               alias="atomic_float",
               features=True),

src/gallium/drivers/zink/zink_screen.c

@@ -742,7 +742,7 @@ zink_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
       return 1;
 
    case PIPE_CAP_VERTEX_ATTRIB_ELEMENT_ALIGNED_ONLY:
-      return 1;
+      return !screen->info.have_EXT_legacy_vertex_attributes;
 
    case PIPE_CAP_GL_CLAMP:
       return 0;