update travis to have lunarg sdk installed

diff --git a/.travis.yml b/.travis.yml
index ce0f5775c4fdb0bc2b6012ad9ea27ee9c2228f5e..408fa8a282be93e8ee020617ced16cf0751216c0 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,12 @@ dist: bionic
 dotnet: 2.2.401-1
 mono: latest
 
+before_install:
+    - wget -qO - http://packages.lunarg.com/lunarg-signing-key-pub.asc | sudo apt-key add -
+    - sudo wget -qO /etc/apt/sources.list.d/lunarg-vulkan-1.1.121-bionic.list http://packages.lunarg.com/vulkan/1.1.121/lunarg-vulkan-1.1.121-bionic.list
+    - sudo apt update
+    - sudo apt install vulkan-sdk
+
 script:
     - msbuild /t:restore
     - msbuild