tree 5bc7dd86c9fcd786ba5d815bb7ed251d47e57df1
parent 755b78dc66b2362621a78b6964a9df3af94e960c
author Nicolas Capens <capn@google.com> 1632287502 -0400
committer Nicolas Capens <nicolascapens@google.com> 1632319160 +0000

Compute the image size in 64-bit arithmetic

The size of a 2D 'slice' is returned in a 32-bit value, which is
sufficient for the maximum supported dimensions of 8192x8192, but for
3D images we need to multiply by the depth in 64-bit to avoid numerical
overflow.

Note that currently we only allow memory allocations up to 1 GiB, but
this change fixes correctly reporting how much memory would be required,
from a call to vkGetImageMemoryRequirements().

Bug: chromium:1248567
Change-Id: Ic055790b4ae53355a90a173b824e94e3c5933316
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/57268
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>