I used the AMD Radeon™ Software Beta for Vulkan™ Version 16.15.1009 Beta 4 in my pc, my gfx card is a Radeon R7 200 and Cemu 1.3.2 (and even the 1.3.1) only displayed a black screen, also Xenia (that needs GLSL 4.5).
After I downgraded it to the last stable driver, and cemu was running well.