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Texel Density

If anyone still uses this method (I’m pretty sure it’s still widely used). I am just wondering the best possible way to find out the correct measurements to determine the resolution for my UV maps. Due to UE4 now by default being in cm.

I’ve been reading this article.

Article: http://www.3dtotal.com/index_tutorial_detailed.php?id=1813

And I saw these measurements. But they are for UDK.

• 16 units = 1 foot = 128x128
• 32 units = 2 feet = 256x256
• 64 units = 4 feet = 512x512
• 128 units = 8 feet = 1024x1024]
• 256 units = 16 feet = 2048x2048
• 512 units = 32 feet = 4096x4096

I am trying to figure out the best way to get these measurements correct for my circumstances. All my models have been made in cm.

Hi David,
Im afraid the best idea I can find is that the UE4 market submission requirements say the texture should tile once per meter, however, I’m not sure how much help that will be.
Did you manage to find any better of an answer yourself?

1 unit in UE4 = 1cm, in UDK/UE3 16 Units = 1 foot so about 31cm = 1 foot in UE4 which means it’s just about half the scale in UE4 as it was in UDK/UE3.

I haven’t seen a direct conversion formula but hopefully this helps.

Hey guys,

I was researching about texel density for a personal project in UE4 and I bumped into a couple of interesting threads (including this one) that can help about the topic.

In particular in this one here Standardizing Texture Density TeriyakiStyle proposed to standardize the texture density measures for UT environment art.

Based on those information and on CharlestonS reply I wrote down for myself the following notes (cause I am little dumb with math and proportions) :smiley:
Note: bear in mind that the measure in cm have been rounded and are not exact (because have been converted from the feet measure): they simply helped me to have a rough idea about the measure (because I am not accustom to feet units).

[UDK/UE3]
In UDK/UE3 the scale was the double as it is in UE4.
1 unit = 1.95 cm
1 foot = ~30 cm = 16 units

Texel Density: 8 pixels x unit

• 8 units = 0.5 foot = 15 cm = 64x64
• 16 units = 1 foot = 30 cm = 128x128
• 32 units = 2 feet = 61 cm = 256x256
• 64 units = 4 feet = 121 cm = 512x512
• 128 units = 8 feet = 243 cm = 1024x1024
• 256 units = 16 feet = 487 cm = 2048x2048
• 512 units = 32 feet = 975 cm = 4096x4096

[UE4]
In UE4 the scale is half as it was in UDK/UE3.
1 unit = 1 cm
1 foot = ~30 cm = 30 units

Texel Density: 8 pixels x unit

• 8 units = 0.25 foot = 7,6 cm = 64x64
• 16 units = 0.5 foot = 15 cm = 128x128
• 32 units = 1 foot = 30 cm = 256x256
• 64 units = 2 feet = 61 cm = 512x512
• 128 units = 4 feet = 121 cm = 1024x1024
• 256 units = 8 feet = 243 cm = 2048x2048
• 512 units = 16 feet = 487 cm = 4096x4096

This should answer the initial question I hope. :slight_smile: