hwdec_vulkan: simplify requirement checks for Vulkan interop

I originally wrote this trying to avoid doing an explicit version check
on the headers, but it just makes things more confusing, and the
requirements harder to understand.

So, Vulkan interop now takes a dependency on the header release where
they finalised the video decode headers. VK_EXT_descriptor_buffer was
added in 1.3.235, so that's covered as well.

Along the way I fixed a bug in the waf build where it was depending
on libplacebo-next instead of libplacebo-decode.

1 files changed, 6 insertions, 1 deletions

diff --git a/wscript b/wscript
index f40fdad9d1..8ee61e0d7b 100644
--- a/wscript
+++ b/wscript
@@ -815,9 +815,14 @@ video_output_features = [
         'func': check_statement('vulkan/vulkan_core.h', 'vkCreateDisplayPlaneSurfaceKHR(0, 0, 0, 0)',
                                 use='vulkan')
     }, {
+        'name': 'vulkan-decode-headers',
+        'desc': 'Vulkan headers with decode support',
+        'deps': 'vulkan',
+        'func': check_pkg_config('vulkan', '>= 1.3.238'),
+    }, {
         'name': '--vulkan-interop',
         'desc': 'Vulkan graphics interop',
-        'deps': 'vulkan && libplacebo-next',
+        'deps': 'vulkan-decode-headers && libplacebo-decode',
         'func': check_pkg_config('libavutil', '>= 58.11.100'),
     }, {
         'name': 'vaapi-libplacebo',