计算带宽

Basic rendering can consume surprisingly significant amounts of memory bandwidth. Assume the framebuffer has 16-bit color with 16-bit depth [Android 11] and a 1024 × 768 resolution. Accessing every pixel in the framebuffer 60 times a second takes 94MB/s of bandwidth, so to write all the pixels’ colors every frame at 60 frames a second with 0% overdraw, takes 94MB/s of bandwidth.

这段真坑 我算了半天也算不出来

后来 想到 MB KB 它都是1000。。。不是1024

1024x768x60x16/(1000x1000x8) 他应该只算了color 没算depth