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-rw-r--r--third_party/rust/gfx-backend-metal/shaders/macros.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/third_party/rust/gfx-backend-metal/shaders/macros.h b/third_party/rust/gfx-backend-metal/shaders/macros.h
new file mode 100644
index 0000000000..b731190479
--- /dev/null
+++ b/third_party/rust/gfx-backend-metal/shaders/macros.h
@@ -0,0 +1,5 @@
+#ifdef __METAL_MACOS__
+# define GFX_RENDER_TARGET_ARRAY_INDEX [[render_target_array_index]]
+#else
+# define GFX_RENDER_TARGET_ARRAY_INDEX
+#endif