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Question by Draco18s · Aug 09, 2014 at 08:24 PM · materialpropertyblock

MaterialPropertyBlock Main Texture Offset?

I've gotten into the habit of using MaterialPropertyBlocks to tweak shader properties at runtime, as to avoid creating new material instances for simple things.

The question I have, though, is how can I do this to tweak the material's main texture offset, so I can use a spritesheet of icons and not end up with a bunch of instanced materials (as that would cause the icons not to batch).

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Answer by il88 · May 17, 2016 at 12:57 PM

I've found that you can modify texture transforms (offset and tiling) by setting _STs (uniform float4 _MainTexture_ST for example) like any other Vector4:

propertyBlock.SetVector("_MainTex_ST", new Vector4(0.5f, 0.5f, 0.25f, 0.25f));

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avatar image Dargon_huihui · Apr 22, 2019 at 05:40 AM 0
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so good!!!

avatar image billw2011 · Sep 28, 2020 at 10:56 AM 1
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The order of the values to pass to SetVector is scale.x, scale.y, offset.x, offset.y, e.g. propertyBlock.SetVector("_$$anonymous$$ainTex_ST", new Vector4(scale.x, scale.y, offset.x, offset.y));

avatar image Draco18s billw2011 · Sep 28, 2020 at 01:16 PM 0
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Not for a $$anonymous$$aterialPropertyBlock it isn't. $$anonymous$$aterialPropertyBlocks use strings to reference a shader value. https://docs.unity3d.com/ScriptReference/$$anonymous$$aterialPropertyBlock.html

avatar image billw2011 Draco18s · Sep 28, 2020 at 01:33 PM 0
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I mean that is the order of the values for the vector.

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avatar image Wothanar · Nov 25, 2020 at 04:46 PM 0
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im doing this and is not working to me , I'm using standard shader , whats wrong with what I'm doing I cant understand but I don't see the offset to be changed so far :S

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