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OpenGL ES 3.0 Cookbook by Parminder Singh

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Efficient rendering with the ETC2 compressed texture

For many reasons, compressed texture is desirable over uncompressed textures; the major benefit is reduced memory footprint on the device, smaller size of the downloadable application, and an increase in performance. The OpenGL ES 3.0 specifications made it compulsory for all vendors to support ETC2 and EAC texture compression formats. Prior to this, in OpenGL ES 2.0, texture compression was not standard, as a result of which various hardware specific extensions were evolved. Developers have to support programs of various extensions in order to achieve texture compression on different types of devices.

In this recipe, we will demonstrate ETC2, which is very famous among different texture compression ...

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