<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - Using a single-plane imageview from a multi-plane image is broken" href="https://bugs.freedesktop.org/show_bug.cgi?id=105496#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - Using a single-plane imageview from a multi-plane image is broken" href="https://bugs.freedesktop.org/show_bug.cgi?id=105496">bug 105496</a> from <a class="email" href="mailto:lionel.g.landwerlin@linux.intel.com" title="Lionel Landwerlin <lionel.g.landwerlin@linux.intel.com>"> Lionel Landwerlin</a> <pre>(In reply to atomnuker from <a href="show_bug.cgi?id=105496#c3">comment #3</a>) > (In reply to Lionel Landwerlin from <a href="show_bug.cgi?id=105496#c1">comment #1</a>) > > I think the mistake here is that you're using a single image with 2 > > different view. This requires a compatible format between the 2 views. R8 & > > G8_B8_R8_3PLANE_420 are not compatible. > > Yes they are. Read this. It's right at the top. > <a href="https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/vkspec">https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/vkspec</a>. > html#features-formats-compatible-planes > > > > > > The feature you want to use is VK_IMAGE_CREATE_ALIAS_BIT. You'll need to > > create 2 image & 2 views and have the 2 images share the same memory. > > It's a solution, though not the one I want, is recommended by the spec or > something I'd like to waste time just to find out it doesn't work. > One thing that was also missing on the traces is that no image seem to be created with VK_IMAGE_USAGE_STORAGE_BIT, which what is needed for descriptors of type VK_DESCRIPTOR_TYPE_STORAGE_IMAGE. That seems to hit an assert in my debug build. > > > > > This is a bit confusing to be fair :) I had to reread the spec, even I > > implemented this... > > That would explain why it doesn't work. > > > > > > Consider running your application with the validation layers, it'll help > > spotting potential mistakes like this. > > I am running it through validation layers every time and I've reported all > of the issues on multiplane images, including the one where they don't list > R8 and G8_B8_R8 as compatible. It'll get fixed. > Though considering how many assertions have been made in the validation > layers that no one will ever bother with multiplane images I'm getting > tired. Though the fact that they're slowly getting fixed one at a time gives > me hope.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>