From 4977fa66a345fd1faea8c0d027b3ef320b0714fd Mon Sep 17 00:00:00 2001
From: Corentin Wallez <cwallez@chromium.org>
Date: Tue, 17 Apr 2018 16:39:14 -0400
Subject: [PATCH] VulkanDevice: Request indenpendentBlend.

This is a core NXT feature but wasn't enabled, causing the Vulkan
validation layers to produce an error.
---
 src/backend/vulkan/VulkanBackend.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/backend/vulkan/VulkanBackend.cpp b/src/backend/vulkan/VulkanBackend.cpp
index 44efd0b445..9396de411b 100644
--- a/src/backend/vulkan/VulkanBackend.cpp
+++ b/src/backend/vulkan/VulkanBackend.cpp
@@ -471,6 +471,9 @@ namespace backend { namespace vulkan {
             usedKnobs->swapchain = true;
         }
 
+        // Always require independentBlend because it is a core NXT feature,
+        usedKnobs->features.independentBlend = VK_TRUE;
+
         // Find a universal queue family
         {
             constexpr uint32_t kUniversalFlags =