| commit | a1906301b0e6be0e3b37ba44758b88989691ee66 | [log] [tgz] |
|---|---|---|
| author | Jason Ekstrand <jason.ekstrand@intel.com> | Sun Dec 03 20:16:32 2017 -0800 |
| committer | Mark Lobodzinski <mark@lunarg.com> | Tue Dec 05 13:55:16 2017 -0700 |
| tree | bce764ed928b010602390bf7a9730bad57f5c308 | |
| parent | 3d570cd75197bc62c11cf8ef02fb4c3867665bb8 [diff] |
layers: Add warning for LOAD_OP_LOAD+LAYOUT_UNDEFINED While not technically an error (VK_IMAGE_LAYOUT_UNDEFINED is always allowed as an initial layout), this combination is almost never what you actually want. If nothing else, it's a potential performance problem because VK_ATTACHMENT_LOAD_OP_LOAD is liable to be more expensive than VK_ATTACHMENT_LOAD_OP_DONT_CARE. Give developers a helpful warning in this case. This would have caught an actual bug in some of the Sascha Willems demos as fixed in this PR: https://github.com/SaschaWillems/Vulkan/pull/400 Change-Id: I73c64ae60a65cfb200db00707d650ec8da7ba130
- build-android/
- cmake/
- common/
- external_revisions/
- include/
- layers/
- loader/
- scripts/
- tests/
- windowsRuntimeInstaller/
- .appveyor.yml
- .clang-format
- .gitattributes
- .gitignore
- .travis.yml
- BUILD.md
- build_windows_targets.bat
- CMakeLists.txt
- CONTRIBUTING.md
- COPYRIGHT.txt
- LICENSE.txt
- README.md
- update_external_sources.bat
- update_external_sources.sh
Vulkan Ecosystem Components
This project provides Khronos official ICD loader and validation layers for Vulkan developers on Windows and Linux.
CI Build Status
| Platform | Build Status |
|---|---|
| Linux/Android |  |
| Windows |
Introduction
Vulkan is an Explicit API, enabling direct control over how GPUs actually work. No (or very little) validation or error checking is done inside a Vulkan driver. Applications have full control and responsibility. Any errors in how Vulkan is used often result in a crash. This project provides standard validation layers that can be enabled to ease development by helping developers verify their applications correctly use the Vulkan API.
Vulkan supports multiple GPUs and multiple global contexts (VkInstance). The ICD loader is necessary to support multiple GPUs and the VkInstance level Vulkan commands. Additionally, the loader manages inserting Vulkan layer libraries, including validation layers between the application and the ICD.
The following components are available in this repository:
- Vulkan header files
- ICD Loader
- Validation Layers
- Mock ICD
- Demos and tests for the loader and validation layers
Contributing
If you intend to contribute, the preferred work flow is for you to develop your contribution in a fork of this repo in your GitHub account and then submit a pull request. Please see the CONTRIBUTING file in this repository for more details
How to Build and Run
BUILD.md includes directions for building all the components, running the validation tests and running the demo applications.
Information on how to enable the various Validation layers is in layers/README.md.
Architecture and interface information for the loader is in loader/LoaderAndLayerInterface.md.
NOTE: Update Nvidia Drivers
- A recent glslang change exposed a bug in the texel fetch behavior on Nvidia devices under certain situations.
- Previously, we reverted the glslang change which exposed it.
- Nvidia has since resolved the issue, and we are now removing the workaround.
- Driver installs with the fix are available on their download page, just look for:
- Linux Drivers starting with version 367.35
- Windows Drivers starting at version 372.54
License
This work is released as open source under a Apache-style license from Khronos including a Khronos copyright.
See COPYRIGHT.txt for a full list of licenses used in this repository.
Acknowledgements
While this project has been developed primarily by LunarG, Inc; there are many other companies and individuals making this possible: Valve Corporation, funding project development; Google providing significant contributions to the validation layers; Khronos providing oversight and hosting of the project.