meson.build: add vulkan dependency

meson.build

@@ -6,7 +6,21 @@ project('vs-placebo', ['c', 'cpp'],
 
 win32 = host_machine.system() == 'windows' or host_machine.system() == 'cygwin'
 
-placebo = dependency('libplacebo', required: true, version: '>=5.229.0', static: win32)
+libplacebo_default_options = [
+  'default_library=static',
+  'vulkan=enabled',
+  'opengl=disabled',
+  'd3d11=disabled',
+  'glslang=enabled',
+  'shaderc=enabled',
+  'lcms=enabled',
+  'demos=false',
+]
+if win32
+  libplacebo_default_options += ['shaderc=enabled']
+endif
+
+placebo = dependency('libplacebo', default_options: libplacebo_default_options, required: true, version: '>=5.229.0', static: win32)
 dovi = dependency('dovi', required: false)
 
 use_dovi = dovi.found()
@@ -25,8 +39,15 @@ sources = []
 
 subdir('src')
 
+if win32
+  subdir('vulkan')
+  vulkan = declare_dependency(link_args: 'vulkan/libvulkan-1.a')
+else
+  vulkan = declare_dependency()
+endif
+
 shared_module('vs_placebo', sources,
-  dependencies: [placebo, dovi],
+  dependencies: [placebo, vulkan, dovi],
   link_with: [p2p],
   name_prefix: 'lib',
   install: true