Feature Request: Enable SurfaceAppearance To use thumbnail textures

Bug Reports Engine Bugs
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1

This just recently became a issue where you cannot make a SurfaceAppearance us a thumbnail texture endpoint. (rbxthumb) This feature was useful for compressing textures. It appears that ROBLOX uses these endpoints or something in the software to switch the textures if the player is on a low-memory device. You can use these textures on a SpecialMesh, but no longer can use it. I was running this code on a few directories in the command line and up until a few months ago this no longer works. It cannot be done during runtime because of SurfaceAppearance ColorMap read permissions which is normal but just to clarify the context.

function extractAssetId(url)
	local assetId
	assetId = url:match("rbxassetid://(%d+)")
	if assetId then return assetId end
	assetId = url:match("rbxthumb://type=Asset&id=(%d+)&w=")
	if assetId then return assetId end
	return nil
end
local prefix="rbxassetid://"
local prefix="rbxthumb://type=Asset&id=" 
local size="&w=150&h=150"
local function compression(v)
	if (v.ClassName=="Decal" or v.ClassName=="Texture") then
		local id=extractAssetId(v.Texture)
		if id then
			v.Texture=prefix..id..size
		end
	elseif v.ClassName=="SpecialMesh" and v.TextureId~="" then 
		local id=extractAssetId(v.TextureId)
		if id then
			v.TextureId=prefix..id..size
		end
	elseif v.ClassName=="MeshPart" then 
		if  v.TextureID~="" and v:FindFirstChildOfClass("SurfaceAppearance") then
			v.TextureID=""
		elseif v:FindFirstChildOfClass("SurfaceAppearance")==nil then


			if v.Size.X<5 and v.Size.Z<5 then
				local id=extractAssetId(v.TextureID)
				if id then
					v.TextureID=prefix..id..size
				end	
			elseif v.Size.X<40 and v.Size.Z<40 then
				local id=extractAssetId(v.TextureID)
				if id then
					v.TextureID=prefix..id..size
				end	
			end
		end
	elseif v.ClassName=="SurfaceAppearance" and v.ColorMap~="" then 
		local id=extractAssetId(v.ColorMap)
		if id then
			if v.Parent.ClassName=="MeshPart" then
				if v.Parent.Size.X<5 and v.Parent.Size.Z<5 then			
					v.ColorMap=prefix..id..size			
				elseif v.Parent.Size.X<40 and v.Parent.Size.Z<40 then
					v.ColorMap=prefix..id..size			
				end
			else 
				v.ColorMap=prefix..id..size
			end
		end
	elseif v.ClassName=="ImageLabel" then
		local id=extractAssetId(v.Image)
		if id then
			v.Image=prefix..id..size	
		end
	elseif v.ClassName=="Tool" then 
		local id=extractAssetId(v.TextureId)
		if id then
			v.TextureId=prefix..id..size
		end
	end	

end

So the gist is that you use to be able to use rbxthumb endpoints for surfaceappearances and meshparts but this is no longer possible for some reason.

Expected behavior

I expect that when I use a rbxthumb texture on a meshpart or surfaceappearance I can load the texture like any normal texture.

2

Closed for review.

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