mirror of
https://github.com/charles-lunarg/vk-bootstrap.git
synced 2024-11-14 04:11:49 +00:00
158 lines
6.4 KiB
Markdown
158 lines
6.4 KiB
Markdown
# `vk-bootstrap`
|
|
|
|
A utility library that jump starts initialization of Vulkan
|
|
|
|
This library simplifies the tedious process of:
|
|
|
|
* Instance creation
|
|
* Physical Device selection
|
|
* Device creation
|
|
* Getting queues
|
|
* Swapchain creation
|
|
|
|
It also adds several conveniences for:
|
|
|
|
* Enabling validation layers
|
|
* Adding a debug callback messenger
|
|
* Enabling extensions on a physical device
|
|
* Select a gpu based on a set of criteria like features, extensions, memory, etc
|
|
|
|
Read the [Getting Started](docs/getting_started.md) guide for a quick start on using `vk-bootstrap`
|
|
|
|
## Basic Usage
|
|
|
|
```cpp
|
|
|
|
#include "VkBootstrap.h"
|
|
|
|
bool init_vulkan () {
|
|
vkb::InstanceBuilder builder;
|
|
auto inst_ret = builder.set_app_name ("Example Vulkan Application")
|
|
.request_validation_layers ()
|
|
.use_default_debug_messenger ()
|
|
.build ();
|
|
if (!inst_ret) {
|
|
std::cerr << "Failed to create Vulkan instance. Error: " << inst_ret.error().message() << "\n";
|
|
return false;
|
|
}
|
|
vkb::Instance vkb_inst = inst_ret.value ();
|
|
|
|
vkb::PhysicalDeviceSelector selector{ vkb_inst };
|
|
auto phys_ret = selector.set_surface (/* from user created window*/)
|
|
.set_minimum_version (1, 1) // require a vulkan 1.1 capable device
|
|
.require_dedicated_transfer_queue ()
|
|
.select ();
|
|
if (!phys_ret) {
|
|
std::cerr << "Failed to select Vulkan Physical Device. Error: " << phys_ret.error().message() << "\n";
|
|
return false;
|
|
}
|
|
|
|
vkb::DeviceBuilder device_builder{ phys_ret.value () };
|
|
// automatically propagate needed data from instance & physical device
|
|
auto dev_ret = device_builder.build ();
|
|
if (!dev_ret) {
|
|
std::cerr << "Failed to create Vulkan device. Error: " << dev_ret.error().message() << "\n";
|
|
return false;
|
|
}
|
|
vkb::Device vkb_device = dev_ret.value ();
|
|
|
|
// Get the VkDevice handle used in the rest of a vulkan application
|
|
VkDevice device = vkb_device.device;
|
|
|
|
// Get the graphics queue with a helper function
|
|
auto graphics_queue_ret = vkb_device.get_queue (vkb::QueueType::graphics);
|
|
if (!graphics_queue_ret) {
|
|
std::cerr << "Failed to get graphics queue. Error: " << graphics_queue_ret.error().message() << "\n";
|
|
return false;
|
|
}
|
|
VkQueue graphics_queue = graphics_queue_ret.value ();
|
|
|
|
// Turned 400-500 lines of boilerplate into less than fifty.
|
|
return true;
|
|
}
|
|
```
|
|
|
|
See `example/triangle.cpp` for an example that renders a triangle to the screen.
|
|
|
|
## Setting up `vk-bootstrap`
|
|
|
|
This library has no external dependencies beyond C++17, its standard library, and at least the 1.1 version of the Vulkan Headers.
|
|
|
|
Note: on Unix platforms, `vk-bootstrap` will require the dynamic linker in order to compile as the library doesn't link against `vulkan-1.dll`/`libvulkan.so` directly.
|
|
|
|
### Copy-Paste
|
|
|
|
Copy the `src/VkBootstrap.h`, `src/VkBootstrapDispatch.h`, and `src/VkBootstrap.cpp` files into your project, include them into your build, then compile as you normally would.
|
|
|
|
`vk-bootstrap` is *not* a header only library, so no need to worry about macros in the header.
|
|
|
|
#### Linux specific
|
|
|
|
vk-bootstrap will load the required symbols at runtime, which requires that the application is linked to the system dynamic link.
|
|
How the dynamic linker is linked into the project depends on the build system in question.
|
|
If CMake is being used, link vk-bootstrap with `${CMAKE_DL_LIBS}`.
|
|
|
|
### git-submodule + CMake
|
|
|
|
Add this project as a git-submodule into the root directory. Suggested is using a subdirectory to hold all submodules.
|
|
|
|
```bash
|
|
git submodule add https://github.com/charles-lunarg/vk-bootstrap
|
|
```
|
|
|
|
With CMake, add the subdirectory to include the project
|
|
|
|
```cmake
|
|
add_subdirectory(vk-bootstrap)
|
|
```
|
|
|
|
Then use `target_link_libraries` to use the library in whichever target needs it.
|
|
|
|
```cmake
|
|
target_link_libraries(your_application_name vk-bootstrap::vk-bootstrap)
|
|
```
|
|
|
|
### CMake Fetch Content
|
|
If cmake 3.12 is available, use the FetchContent capability of cmake to directly download and build the library for you.
|
|
|
|
```cmake
|
|
include(FetchContent)
|
|
FetchContent_Declare(
|
|
fetch_vk_bootstrap
|
|
GIT_REPOSITORY https://github.com/charles-lunarg/vk-bootstrap
|
|
GIT_TAG BRANCH_OR_TAG #suggest using a tag so the library doesn't update whenever new commits are pushed to a branch
|
|
)
|
|
FetchContent_MakeAvailable(fetch_vk_bootstrap)
|
|
target_link_libraries(your_application_name vk-bootstrap::vk-bootstrap)
|
|
```
|
|
|
|
### Manually Building
|
|
|
|
```bash
|
|
git clone https://github.com/charles-lunarg/vk-bootstrap
|
|
cd vk-bootstrap
|
|
mkdir build
|
|
cd build
|
|
cmake ..
|
|
```
|
|
|
|
### Vulkan-Headers dependency
|
|
|
|
By default, when using vk-bootstrap through CMake, it will attempt to locate the Vulkan-Headers on the system and fall back to downloading them directly if they aren't present. If the `VK_BOOTSTRAP_VULKAN_HEADER_DIR` option is specified, it will use that directory instead.
|
|
|
|
|
|
### Testing
|
|
|
|
Tests will be enabled if you open this project standalone. If you include this project as a subdirectory or sub-project, you can force enable tests by setting the option `VK_BOOTSTRAP_TEST` to `ON`. Testing requires GLFW and Catch2 but are acquired automatically using cmake fetch content.
|
|
|
|
```bash
|
|
cmake ../path/to/your_project/ -DVK_BOOTSTRAP_TEST=ON
|
|
```
|
|
|
|
### Build Options
|
|
| Name | Type | Default Value | Description |
|
|
| -------------------------------- | ------ | ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
|
|
| `VK_BOOTSTRAP_WERROR` | bool | `OFF` | Enable warnings as errors during compilation. |
|
|
| `VK_BOOTSTRAP_TEST` | bool | `OFF` | Enable building of the tests in this project. Will download GLFW and Catch2 automatically if enabled. |
|
|
| `VK_BOOTSTRAP_VULKAN_HEADER_DIR` | string | `""` | Optional. Specify the directory that contains the Vulkan Headers. Useful if you are downloading the headers manually and don't want vk-bootstrap to download them itself. |
|