* vk: separate specular color
rsx: separate front color output from back color output
re-enable front-back diffuse lighting
vk: fix front face selection and actually enable face culling
* dx12: Hide constant-key blended visuals (by common use of factor, 1-factor)
* dx12: Fix 2 sided lighting when the shader does not compute both outputs
* vk/dx12: confirm that src register exists before copying for 2-sided lighting
* gl/vk/dx12: Fix vertex shader code generation for buggy games
dx12: revert vsh attribute changes
* vk: dynamically flush command buffers if we exceed available resources
* dx12: do not prepare flip texture if it has not been initialized
Properly set up vulkan API version when creating instance
Fix gcc error about passing function result by reference
Fix alot of warnings in VKGSRender project
More fixes for gcc
Fix texture create function
Rebase on current master; Refactor vertex upload code
Fix build; Minor fixes
Start preparations for merge
Fix generic indexed drawing bugs
Define WIN32_KHR only for windows
Remove linking against vulkan-1.lib
