iOS pvrtc 이미지 포맷 변경시 반드시 주의할 것-ngui

알파맵과 불투명 맵 두가지를 만들어서 아틀라스 material을 unlit/transprent mask 로 변경하여 두가지를 적용해야 깔끔한 이미지 가 나온다. - 노가다..

https://gametorrahod.com/pvrtc-vs-astc-texture-compression-on-an-ios-device-38278a2345d

PVRTC vs ASTC texture compression on an iOS device

PVRTC texture compression format has been a long time default, but did you know from A8 processor onwards the device now supports ASTC texture compression? (and perhaps you are not taking advantage of it)

In this blog post we will compare it against PVRTC. The long time default for Unity iOS was PVRTC so you might have to manually set the compression format.

“Supports” means it can use the compressed image as-is in the graphic cards without decompressing them. (which is the point of comprssing to these format rather than PNG, etc.) If Unity see that the device does not support the format the size in RAM will be equal to RGBA32, the uncompressed, pixel-to-pixel perfect of your image.

References

Here’s various reference images that you can comeback to look at later. Click on it to zoom in. Pay attention to the text at bottom of each one.

Import settings

<figure name="7f9e" id="7f9e" class="graf graf--figure graf-after--h4" style="margin: 44px 0px 0px; position: relative; clear: both; outline: 0px; box-sizing: border-box; user-select: auto; z-index: 100;">

<canvas class="progressiveMedia-canvas js-progressiveMedia-canvas" width="75" height="46" style="display: block; vertical-align: baseline; position: absolute; top: 0px; left: 0px; width: 700px; height: 437.5px; margin: auto; box-sizing: border-box; visibility: hidden; opacity: 0; backface-visibility: hidden; transition: visibility 0s linear 0.5s, opacity 0.1s ease 0.4s;"></canvas>

</figure>