ASTC TEXTURE COMPRESSION PDF

ASTC TEXTURE COMPRESSION PDF

2D Bit Rates. 3D Bit Rates. 4×4 bpp 10×5 bpp 3x3x3 bpp 5x5x4 bpp. 5×4 bpp 10×6 bpp 4x3x3 bpp 5x5x5 bpp. 5×5 . Adaptive Scalable Texture Compression (ASTC) technology developed by Arm and AMD has been adopted as an official extension to both the OpenGLĀ® and. Adaptative Scalable Texture Compression (ASTC) is a new texture com- pression format which is set to take the world by storm. Having been accepted as a new.

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Hardware supporting ASTC has achieved sufficient enough market share that developers should seriously consider how to leverage ckmpression in their titles: In addition, at the end is a more detailed walk through of some real-world compression testing results.

Leveraging a large variety of square and non-square block sizes, ASTC delivers a wide range of derived compression ratios, scaling from 8bpp down to just under 1bpp, as follows: For each category choose if you want:.

You can use ETC1 for Textures that have an cmpression channelbut only if the build is for Android and the Textures are placed on an atlas by specifying the packing tag.

Using ASTC Texture Compression for Game Assets

Compression formats used for textures are based on compressing specific blocks of pixels. The table below shows supported platforms for each compression format.

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Third, astx added sRGB data support. When this happens, time is lost decompressing Textures, and memory is lost because you are storing them twice.

Texture compression formats for platform-specific overrides

asgc Try to find a “baseline” for each class of asset, so you can take a “quick pass” at the entire project. Note that this conversion is not affected by the number of channels used, so you can use a single-channel compressed image with sRGB conversion. Views Read View source View history.

Crunch compression format updated in Whether floats larger than 1. How can we deal with these topics? This article is a stub. The following is a brief selection of tools available on compressoin internet to help developers deal with texture compression.

With BPTC, you pick an image format based on the channel properties: Again, this is handled on a per-block basis, rather than as an assumption of the format. Today, you must think carefully about your market.

Using ASTC Texture Compression for Game Assets | NVIDIA Developer

Or even for all of them. Please check with the Issue Tracker at issuetracker. More info See in Glossary by 3D graphics hardware such as a graphics card or mobile device. Block size WxH Bits per Pixel 4×4 8. Pixel lighting is calculated at every screen pixel.

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The key to ASTC is that while it uses a fixed bits-per-block, each texture can have a different size block fit in those bits, unlike the fixed 4×4 block of prior formats. This resulted in the mid launch of the ASTC texture compression format.

Unity – Manual: Texture compression formats for platform-specific overrides

ASTC is a bit different. More info See in Glossary.

Please give it a rating: By using this site, you agree to the Terms of Use and Privacy Policy. Low quality, but lower size, resulting in higher performance. Please tell us more about what you found unclear or confusing, or let us know how we could make it clearer:. Please tell us what’s wrong: For your product, you need to decide overall, as well as per asset, whether quality vs the raw asset or shrinking the file size is most important. ASTC is a major step forward in terms of image quality, compession memory bandwidth and thus energy use.