diff --git a/src/main/resources/assets/voxy/shaders/lod/meshext/frag.glsl b/src/main/resources/assets/voxy/shaders/lod/meshext/frag.glsl
index bbec6c8e..d1f3ee55 100644
--- a/src/main/resources/assets/voxy/shaders/lod/meshext/frag.glsl
+++ b/src/main/resources/assets/voxy/shaders/lod/meshext/frag.glsl
@@ -1,13 +1,13 @@
 #version 460 core
 
+#extension GL_EXT_mesh_shader : require
+
 layout(binding = 0) uniform sampler2D blockModelAtlas;
 layout(binding = 2) uniform sampler2D depthTex;
 
-struct PerPrimData {
+layout(location=1) perprimitiveEXT flat in PerPrimData {
     uvec4 data;
-};
-
-layout(location=1) perprimitiveEXT PerPrimData primIn;
+} primIn;
 
 layout(location = 0) out vec4 outColour;
 
diff --git a/src/main/resources/assets/voxy/shaders/lod/meshext/mesh.glsl b/src/main/resources/assets/voxy/shaders/lod/meshext/mesh.glsl
index 5c1b6788..2fcb63d2 100644
--- a/src/main/resources/assets/voxy/shaders/lod/meshext/mesh.glsl
+++ b/src/main/resources/assets/voxy/shaders/lod/meshext/mesh.glsl
@@ -29,11 +29,9 @@ struct Task {
 
 taskPayloadSharedEXT Task task;
 
-struct PerPrimData {
+layout(location=1) perprimitiveEXT flat out PerPrimData {
     uvec4 data;
-};
-
-layout(location=1) perprimitiveEXT PerPrimData primOut[];
+} primOut[];
 
 
 uint getQuadId() {