Update README.md

README.md

@@ -115,7 +115,7 @@ Also, this shader moved all matrix mul() inside the fragment shader to vertex sh
 I need LOTs of decals in my game, is there performance best practice?
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 - make all decal cube as thin/small as possible
-- don't overlap decals(overdraw)
+- don't overlap decals too much for each pixel(overdraw)
 - If your camera never goes into decal's cube volume, you should set ZTest to LessEqual, and Cull to Back in the material inspector, doing this will improve GPU performance a lot! (due to effective early-Z, GPU only need to render visible decals)
 - disable _ProjectionAngleDiscardEnable, doing this will improve GPU performance a lot!
 - enable "generate mipmap" for your decal texture, else a high resolution decal texture will make your game slow due to cache miss in GPU memory