<div dir="ltr"><p class="gmail-md-end-block gmail-md-p gmail-md-focus" style="box-sizing:border-box;line-height:inherit;margin:0.8em 0px;white-space:pre-wrap;color:rgb(51,51,51);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px">Dear Developers:<p class="gmail-md-end-block gmail-md-p" style="box-sizing:border-box;line-height:inherit;margin:0.8em 0px;white-space:pre-wrap;color:rgb(51,51,51);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px">I am referring to this document <a href="https://docs.mesa3d.org/drivers/venus.html#vtest" style="box-sizing:border-box;color:rgb(65,131,196)">https://docs.mesa3d.org/drivers/venus.html#vtest</a> to develop vulkan related functions, but every time I run <code style="box-sizing:border-box;vertical-align:initial;border:1px solid rgb(231,234,237);background-color:rgb(243,244,244);border-radius:3px;padding:0px 2px;font-size:0.9em">vulkaninfo</code> or <code style="box-sizing:border-box;vertical-align:initial;border:1px solid rgb(231,234,237);background-color:rgb(243,244,244);border-radius:3px;padding:0px 2px;font-size:0.9em">vkcube</code> some errors occur.<p class="gmail-md-end-block gmail-md-p" style="box-sizing:border-box;line-height:inherit;margin:0.8em 0px;white-space:pre-wrap;color:rgb(51,51,51);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px"><code style="box-sizing:border-box;vertical-align:initial;border:1px solid rgb(231,234,237);background-color:rgb(243,244,244);border-radius:3px;padding:0px 2px;font-size:0.9em">virgl_test_server</code> prints the following:<blockquote style="box-sizing:border-box;margin:0.8em 0px;border-left:4px solid rgb(223,226,229);padding:0px 15px;color:rgb(119,119,119);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px">gl_version 46 - core profile enabled vtest_client_dispatch_commands: client context created. client failed: VTEST_CLIENT_ERROR_INPUT_READ</blockquote><p class="gmail-md-end-block gmail-md-p" style="box-sizing:border-box;line-height:inherit;margin:0.8em 0px;white-space:pre-wrap;color:rgb(51,51,51);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px">Running <code style="box-sizing:border-box;vertical-align:initial;border:1px solid rgb(231,234,237);background-color:rgb(243,244,244);border-radius:3px;padding:0px 2px;font-size:0.9em">vulkaninfo</code> prints the following:<blockquote style="box-sizing:border-box;margin:0.8em 0px;border-left:4px solid rgb(223,226,229);padding:0px 15px;color:rgb(119,119,119);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px">WARNING: [Loader Message] Code 0 : terminator_CreateInstance: Failed to CreateInstance in ICD 0. Skipping ICD. Cannot create Vulkan instance. This problem is often caused by a faulty installation of the Vulkan driver or attempting to use a GPU that does not support Vulkan. ERROR at ./vulkaninfo/vulkaninfo.h:649:vkCreateInstance failed with ERROR_INCOMPATIBLE_DRIVER</blockquote><p class="gmail-md-end-block gmail-md-p" style="box-sizing:border-box;line-height:inherit;margin:0.8em 0px;white-space:pre-wrap;color:rgb(51,51,51);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px">Running <code style="box-sizing:border-box;vertical-align:initial;border:1px solid rgb(231,234,237);background-color:rgb(243,244,244);border-radius:3px;padding:0px 2px;font-size:0.9em">vkcube</code> prints the following:<blockquote style="box-sizing:border-box;margin:0.8em 0px;border-left:4px solid rgb(223,226,229);padding:0px 15px;color:rgb(119,119,119);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px">Cannot find a compatible Vulkan installable client driver (ICD). Please look at the Getting Started guide for additional information.</blockquote><p class="gmail-md-end-block gmail-md-p" style="box-sizing:border-box;line-height:inherit;margin:0.8em 0px;white-space:pre-wrap;color:rgb(51,51,51);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px">After debugging, I found that the error occurred when calling the system function <code style="box-sizing:border-box;vertical-align:initial;border:1px solid rgb(231,234,237);background-color:rgb(243,244,244);border-radius:3px;padding:0px 2px;font-size:0.9em">res = read(fd, ptr, left)</code> in the <code style="box-sizing:border-box;vertical-align:initial;border:1px solid rgb(231,234,237);background-color:rgb(243,244,244);border-radius:3px;padding:0px 2px;font-size:0.9em">vtest_block_read(struct vtest_input *input, void *buf, int size)</code> function, it returned 0 to the variable <code style="box-sizing:border-box;vertical-align:initial;border:1px solid rgb(231,234,237);background-color:rgb(243,244,244);border-radius:3px;padding:0px 2px;font-size:0.9em">res</code>, but The variable <code style="box-sizing:border-box;vertical-align:initial;border:1px solid rgb(231,234,237);background-color:rgb(243,244,244);border-radius:3px;padding:0px 2px;font-size:0.9em">left</code> passed in is 8. This is only true <code style="box-sizing:border-box;vertical-align:initial;border:1px solid rgb(231,234,237);background-color:rgb(243,244,244);border-radius:3px;padding:0px 2px;font-size:0.9em">if(res == left)</code>.<p class="gmail-md-end-block gmail-md-p" style="box-sizing:border-box;line-height:inherit;margin:0.8em 0px;white-space:pre-wrap;color:rgb(51,51,51);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px">And I checked the Requirements by running below command:<pre class="gmail-md-fences gmail-md-end-block gmail-md-fences-with-lineno gmail-ty-contain-cm gmail-modeLoaded" lang="" style="box-sizing:border-box;overflow:visible;font-size:0.9em;break-inside:avoid;white-space:normal;background-image:inherit;background-position:inherit;background-size:inherit;background-repeat:inherit;background-origin:inherit;background-clip:inherit;background-color:rgb(248,248,248);border:1px solid rgb(231,234,237);border-radius:3px;padding:8px 4px 6px 0px;margin-bottom:15px;margin-top:15px;width:inherit;color:rgb(51,51,51)"> vulkaninfo | grep "Vulkan Instance Version" vulkaninfo | grep VK_EXT_external_memory_dma_buf vulkaninfo | grep VK_EXT_image_drm_format_modifier vulkaninfo | grep VK_EXT_queue_family_foreign uname -r</pre><p class="gmail-md-end-block gmail-md-p" style="box-sizing:border-box;line-height:inherit;margin:0.8em 0px;white-space:pre-wrap;color:rgb(51,51,51);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px">the output:<blockquote style="box-sizing:border-box;margin:0.8em 0px;border-left:4px solid rgb(223,226,229);padding:0px 15px;color:rgb(119,119,119);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px">Vulkan Instance Version: 1.3.204 VK_EXT_external_memory_dma_buf : extension revision 1 VK_EXT_image_drm_format_modifier : extension revision 2 VK_EXT_queue_family_foreign : extension revision 1 5.15.0-52-generic</blockquote><p class="gmail-md-end-block gmail-md-p" style="box-sizing:border-box;line-height:inherit;margin:0.8em 0px;white-space:pre-wrap;color:rgb(51,51,51);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px">Except the graphics card is GTX 1060 3GB, I think my other requirements are met. I use vtest, which can ignore the kernel version according to the documentation.<ul class="gmail-ul-list" style="box-sizing:border-box;margin:0.8em 0px;padding-left:30px;color:rgb(51,51,51);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px"><li class="gmail-md-list-item" style="box-sizing:border-box;margin:0px">When you were testing, what versions of virglrenderer and mesa were you using? If you guys know, please let me know and I will try it again.</li></ul><ul class="gmail-ul-list" style="box-sizing:border-box;margin:0.8em 0px;padding-left:30px;color:rgb(51,51,51);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px"><li class="gmail-md-list-item" style="box-sizing:border-box;margin:0px">If you don't know the specific version, can you give me some debugging or method suggestions?</li></ul><p class="gmail-md-end-block gmail-md-p" style="box-sizing:border-box;line-height:inherit;margin:0.8em 0px;white-space:pre-wrap;color:rgb(51,51,51);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px"><p class="gmail-md-end-block gmail-md-p" style="box-sizing:border-box;line-height:inherit;margin:0.8em 0px;white-space:pre-wrap;color:rgb(51,51,51);font-family:"Open Sans","Clear Sans","Helvetica Neue",Helvetica,Arial,"Segoe UI Emoji",sans-serif;font-size:16px">Looking forward to your reply, thank you very much</div>