vulkan: add a comment explaining upstream version policy

(From OE-Core rev: 7484c71ca3a932bcb4c3679e25b0233c06be4404)

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/meta/recipes-graphics/glslang/glslang_1.3.239.0.bb b/meta/recipes-graphics/glslang/glslang_1.3.239.0.bb
index 6bcde521e2..295a8fe190 100644
--- a/meta/recipes-graphics/glslang/glslang_1.3.239.0.bb
+++ b/meta/recipes-graphics/glslang/glslang_1.3.239.0.bb
@@ -13,6 +13,10 @@ SRC_URI = "git://github.com/KhronosGroup/glslang.git;protocol=https;branch=main
            file://0001-generate-glslang-pkg-config.patch \
            "
 PE = "1"
+# These recipes need to be updated in lockstep with each other:
+# glslang, vulkan-headers, vulkan-loader, vulkan-tools, spirv-headers, spirv-tools
+# The tags versions should always be sdk-x.y.z, as this is what
+# upstream considers a release.
 UPSTREAM_CHECK_GITTAGREGEX = "sdk-(?P<pver>\d+(\.\d+)+)"
 S = "${WORKDIR}/git"