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3D-Tech News Around The Web / Vulkan API specifications 1.0.62 released
« Last post by Stefan on October 07, 2017, 04:59:22 PM »
Change log for October 6, 2017 Vulkan 1.0.62 spec update:

  * Bump API patch number and header version number to 62 for this update.

Github Issues:

  * Move asciidoc conditionals for `VK_KHR_maintenance1` in
    slink:VkDescriptorSetAllocateInfo so valid usage statements for
    `VK_KHR_push_descriptor` aren't accidentally removed when the first
    extension isn't enabled (public issue 573).
  * Fixed errors in API example code for
    flink:vkUpdateDescriptorSetWithTemplateKHR and
    flink:vkCmdPushDescriptorSetWithTemplateKHR (public issue 577).

Internal Issues:

  * Specify constraints on concurrent access to fences that share payload in
    the <<synchronization-fences-importing, Importing Fence Payloads>> and
    <<synchronization-semaphores-waiting-state, Semaphore State Requirements
    For Wait Operations>> sections (internal issue 820).
  * Define the term "`retired swapchain`", reorganize some swapchain
    language, and improve language for pname:oldSwapchain in
    flink:VkSwapchainCreateInfoKHR, the <<swapchain-wsi-image-create-info>>
    table, flink:vkDestroySwapchainKHR, and flink:vkAcquireNextImage2KHX
    (internal issue 869).
  * Describe in the <<writing-arrays, Describing Properties of Array
    Elements>> section of the style guide how and when to use "`each`" and
    "`any`" to refer to properties of array elements, and make those uses in
    the specification consistent (internal issue 884).
  * Clarified that events cannot be used for cross-queue synchronization in
    the <<synchronization-events, Events>> section and for
    flink:vkCmdWaitEvents (internal issue 970).
  * Add success and error codes to +vk.xml+ for
    flink:vkCreateValidationCacheEXT (internal issue 995).
  * Clarify aspect mask usage for image memory barriers of multi-plane
    images in slink:VkImageSubresourceRange, slink:VkImageMemoryBarrier, and
    the <<textures-layout-validation, Layout Validation>> section (internal
    issue 996).

Other Issues:

  * Fixed typo in flink:VkRenderPassSampleLocationsBeginInfoEXT (renamed
    field pname:pSubpassSampleLocations to
  * Add missing buffer usage requirements for indirect draws in
    flink:vkCmdDrawIndirect, flink:vkCmdDrawIndirectCountAMD,
    flink:vkCmdDrawIndexedIndirect, and
  * Modify Makefile to allow specification to build in git "`detached HEAD`"
  * Update valid usage ID generation script to allow recursively operating
    on all `.txt` files in a specified directory, and move the `startVUID`
    tracking information into a separate python file that is automatically
    updated by the script.

New Extensions:

  * Add +vk.xml+ entries for pending `VK_ANDROID_native_buffer` extension
    (note, this extension is not yet enabled).
  * `VK_AMD_shader_image_load_store_lod`

Intel UHD Graphics 630 "Coffee Lake" On Linux:

This morning I delivered the initial Linux processor benchmarks of the Core i7 8700K and Core i5 8400 for the just-launched "Coffee Lake" desktop processors. With these Intel "Gen 8" processors, the integrated "HD Graphics" from Kabylake have been rebranded to "UHD Graphics". While there wasn't any real changes architecturally to the graphics hardware, right now the Linux support isn't quite out-of-the-box.
Bullet 2.87 has improved support for robotics, reinforcement learning and VR. In particular, see the “Reinforcement Learning” section in the pybullet quickstart guide at . There are also preliminary C# bindings to allow the use of pybullet inside Unity 3D for robotics and reinforcement learning. In addition, vectorunit Beach Buggy Racing using Bullet has been released for the Nintendo Switch!
You can download the release from

  • Fixed a bug that sometimes prevented the "Reset Default Configuration" button in the nvidia-settings "ECC Settings" page from being available when the ECC configuration is set to a non-default state.
  • Fixed a bug that caused nvidia-settings to enforce overly aggressive limits on display positions in the "X Server Display Configuration" page under some circumstances.
  • Fixed a bug that could cause the "Enable Base Mosaic (Surround)" checkbox in nvidia-settings to disappear when an X screen, rather than a display, is selected in the "X Server Display Configuration" page.
  • Fixed a race condition that could lead to crashes when OpenGL programs manipulated vertex buffer objects from multiple threads simultaneously.
  • Fixed a bug that caused the nvidia-settings control panel to retain some settings that had been applied, but not confirmed. This resulted in unwanted settings being applied to subsequent settings changes.
  • Improved performance of fullscreen Vulkan applications using X11 swapchains.  This optimization will cause more events that trigger an out-of-date swapchain, such as when entering or leaving fullscreen mode.  (This is commonly encountered when using the alt-tab key combination, for example.)   Applications that do not properly respond to the VK_ERROR_OUT_OF_DATE_KHR return code may not function properly when these events occur.  See section 30.8 of the Vulkan specification.
  • Added support for YUV 4:2:0 compression for monitors connected via DisplayPort in configurations where either the display or GPU is incapable of driving the current mode in RGB 4:4:4.  See the description in the "Programming Modes" appendix for details.
  • Added framebuffer console hot plug handling to nvidia-modeset.

     Note that hot plugging is only handled when nvidia-modeset is initialized; for example, when Xorg or nvidia-persistenced is running or when nvidia-drm is loaded with the "modeset=1" parameter.
  • Added an "AllowGSYNC" MetaMode attribute that can be used to disable G-SYNC completely. This can be use to allow enabling features that are incompatible with G-SYNC, such as Ultra Low Motion Blur or Frame Lock.
  • Fixed several problems that prevented the "cc_version_check" sanity test from running correctly when building the NVIDIA kernel modules. As these problems would have masked mismatches between the compiler versions used to build the kernel and the NVIDIA kernel modules for an extended period of time, nvidia-installer has been updated to ignore CC version mismatches by default when they are detected.
  • Updated nvidia-installer to use the init_module syscall directly to test load kernel modules instead of libkmod/insmod. This removes libkmod as a build dependency of nvidia-installer, and insmod as a run-time dependency.
  • Tiled monitors formerly resulted in a separate Xinerama screen being reported for each tile. They will now, by default, be combined into a single large Xinerama screen.
  • The individual panels in a tiled monitor will now be arranged based on the layout information provided in the monitor's EDID. This can be overridden by either manually specifying offsets or using the "MetaModeOrientation" option.
  • Disabled interlaced modes over DisplayPort by default due to incomplete support in the GPU. Added "AllowDpInterlaced" mode validation token to override this default behavior and allow interlaced modes over DisplayPort protocol anyway.
  • Fixed a regression that caused some display connectors on some GPUs to not report a connected HDMI or DisplayPort audio device even if the connected monitor supports audio.
  • Fixed a bug that prevented the NVIDIA kernel modules from building for non-SMP Linux kernels.
  • Updated the output of `nvidia-smi nvlink --status` to include reporting NVLink speed.
  • Fixed a bug that caused incorrect PCI topology reporting in nvidia-smi on Intel Skylake systems. [/uote]
3D-Tech News Around The Web / 3DMark Time Spy Extreme - coming October 11
« Last post by Stefan on October 03, 2017, 05:51:55 PM »
 Time Spy Extreme is a new 4K DirectX 12 benchmark test, and it's coming to 3DMark Advanced and Professional Editions on October 11. You won't need a 4K monitor to run it, though you will need a GPU with at least 4 GB of dedicated memory. With its 4K UHD rendering resolution, Time Spy Extreme is an ideal benchmark test for the latest high-end graphics cards. The CPU test is three times more demanding, redesigned to let processors with 8 or more cores perform to their full potential.
  • World's first 4K DirectX 12 gaming benchmark.
  • Renders at 3840 × 2160 (4K UHD) resolution.
  • New CPU test, ideal for processors with 8 or more cores.
Thank you Darin for your feedback. It's weird because I compiled and tested GeeXLab on Raspbian Stretch and I didn't see this issue. Anyway, I will update the OpenGL ES support for the next release. Thanks!
HW: Raspberry Pi 3
OS: Raspbian 2.1 (Sept. 2017 update)
SW: GeeXLab gles2.0 edition

Typing ./ for instance returns the following error:

./GeeXLab: error while loading shared libraries: cannot open shared object file: No such file or directory

GeeXLab's OpenGL 2.1 works fine.

Pi3d was having the same error/issue and came to this conclusion:

In the most recent version of Raspbian, code name "Stretch", the non-open-source Broadcom OpenGLES 2.0 library was renamed from "" to "" and likewise "" was renamed to "", to avoid name clashes with the MESA library.

Which they resolved by making an update to their files and recompiled.  This issue is currently affecting Urho3d and AppGameKit 2 (AGK2).  Even though I do not use GeeXLab, I thought I'd let you all know what was going on in case anyone uses it with their Raspberry Pis.  Take care now,

Darin Murphy
3D-Tech News Around The Web / OpenGL Extensions Viewer 5.0.3 for Android
« Last post by Stefan on October 01, 2017, 05:08:53 PM »
OpenGL Extensions Viewer for Android displays the vendor name, the version, the renderer name and the extensions for OpenGL ES 1.0 to ES 3.1

 What's New

 Support for Android 8.0 (Oreo)

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