Vulkan PostVS ignore primmitive restart indexes when restart is active

Compute primitive restart using VulkanRenderState not pipeline, to account for dynamic state.
Ignore primitive restart indexes, handles primitive restart indexes being used when there are no active vertex buffer bindings

renderdoc/driver/vulkan/vk_postvs.cpp

@@ -1749,7 +1749,7 @@ void VulkanReplay::FetchVSOut(uint32_t eventId, VulkanRenderState &state)
 
   if(action->flags & ActionFlags::Indexed)
   {
-    const bool restart = pipeCreateInfo.pInputAssemblyState->primitiveRestartEnable == VK_TRUE;
+    const bool restart = state.primRestartEnable != VK_FALSE;
     bytebuf idxdata;
     rdcarray<uint32_t> indices;
     uint8_t *idx8 = NULL;
@@ -1838,6 +1838,10 @@ void VulkanReplay::FetchVSOut(uint32_t eventId, VulkanRenderState &state)
       // buffers which is generally much more reasonable
       i32 = RDCMIN(maxIdx, i32);
 
+      // ignore primitive restart indices
+      if(restart && i32 == (0xffffffff >> ((4 - idxsize) * 8)))
+        continue;
+
       auto it = std::lower_bound(indices.begin(), indices.end(), i32);
 
       if(it != indices.end() && *it == i32)