<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#c15">Comment # 15</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:atomnuker@gmail.com" title="atomnuker@gmail.com">atomnuker@gmail.com</a> <pre>(In reply to Lionel Landwerlin from <a href="show_bug.cgi?id=105496#c14">comment #14</a>) > The ffmpeg repo I built locally had the image below bound to a G8_B8_R8 > image. Yes, the one before I pushed. I only used 1 plane in order to test easily without modifying lots of code. > layout (set = 0, binding = 0, rgba8) uniform readonly image2D input_img; > > But somehow it should contain all the planes? Like I said, no, just one: the one with the aspect (plane) you chose via the VkImageView. To illustrate: VkImage (VK_FORMAT_G8_B8R8_2PLANE_420_UNORM_KHR) -> create VkImageView (VK_FORMAT_R8_UNORM and aspect VK_IMAGE_ASPECT_PLANE_0_BIT_KHR) -> bind to descriptor which describes a storage image inside the shader -> imageLoad(input_img, vec2(0)).r will output the pixel of the image at location x=0, y=0. To have access to all planes you need to create separate imageviews and bind them to different images inside the shader, like: > layout (set = 0, binding = 0, rgba8) uniform readonly image2D input_img[3]; > layout (set = 0, binding = 1, rgba8) uniform writeonly image2D output_img[3]; When you do a read into one of the source images you'll get the pixel value inside the .r component of the resulting vec4. The rest of the components contain 0.0f, as expected when the format contains 1 component.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>