diff --git a/doc/resources/vulkan.md b/doc/resources/vulkan.md
index 25b1e83..a228c84 100644
--- a/doc/resources/vulkan.md
+++ b/doc/resources/vulkan.md
@@ -4,3 +4,4 @@
 <https://vulkan-tutorial.com/Vertex_buffers/Vertex_buffer_creation>
 <https://registry.khronos.org/vulkan/specs/1.3-extensions/html/vkspec.html>
 <https://www.youtube.com/watch?v=rXSdDE7NWmA>
+<https://blogs.igalia.com/itoral/2018/03/20/improving-shader-performance-with-vulkans-specialization-constants/>