odin-vk-bootstrap

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odin-vk-bootstrap

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A utility wrapper that jump starts initialization of Vulkan for Odin Language.

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# Odin vk-bootstrap

Inspired by [vk-bootstrap][] for C++, this is a utility library in [Odin Language][] that jump
starts initialization of Vulkan.

Read the [Getting Started](./docs/getting_started.md) guide for a quick start on using
`odin-vk-bootstrap`

## Basic Usage

Just copy the `vkbootstrap.odin` file to your project.

```odin
import "core:fmt"
import vkb "."
import vk "vendor:vulkan"

main :: proc() {
    instance_builder: vkb.Instance_Builder
    vkb.instance_builder_init(&instance_builder)
    defer vkb.instance_builder_uninit(&instance_builder)

// Require the minimum Vulkan api version 1.1
    vkb.instance_builder_require_api_version(&instance_builder, vk.API_VERSION_1_1)

when ODIN_DEBUG {
        // Enable `VK_LAYER_KHRONOS_validation` layer
        vkb.instance_builder_enable_validation_layers(&instance_builder)

// Enable debug reporting with a default messenger callback
        vkb.instance_builder_use_default_debug_messenger(&instance_builder)
    }

vkb_instance: vkb.Instance
    vkb_instance_err := vkb.instance_builder_build(&instance_builder, &vkb_instance)
    if vkb_instance_err != nil {
        fmt.eprintfln("Failed to build instance: %#v", vkb_instance_err)
        return
    }
    defer vkb.destroy_instance(&vkb_instance)

// Create a new physical device selector
    selector: vkb.Physical_Device_Selector
    vkb.physical_device_selector_init(&selector, vkb_instance)
    defer vkb.physical_device_selector_uninit(&selector)

// We want a GPU that can render to current Window surface
    vkb.physical_device_selector_set_surface(&selector, /* from user created window*/)

// Require a vulkan 1.1 capable device
    vkb.physical_device_selector_set_minimum_version(&selector, vk.API_VERSION_1_1)

// Try to select a suitable device
    vkb_physical_device: vkb.Physical_Device
    vkb_physical_device_err := vkb.physical_device_selector_select(&selector, &vkb_physical_device)
    if vkb_physical_device_err != nil {
        fmt.eprintfln("Failed to select physical device: %#v", vkb_physical_device_err)
        return
    }
    // In Vulkan you don't need to destroy a physical device, but here you need
    // to free some resources when the physical device was created.
    defer vkb.destroy_physical_device(&vkb_physical_device)

// Create a device builder
    device_builder: vkb.Device_Builder
    vkb.device_builder_init(&device_builder)
    defer vkb.device_builder_uninit(&device_builder)

// Automatically propagate needed data from instance & physical device
    vkb_device: vkb.Device
    vkb_device_err := vkb.device_builder_build(&device_builder, &vkb_physical_device, &vkb_device)
    if vkb_device_err != nil {
        fmt.eprintfln("Failed to get logical device: %#v", vkb_device_err)
        return
    }
    defer vkb.destroy_device(&vkb_device)

// Get the graphics queue with a helper function
    graphics_queue, graphics_queue_err := vkb.device_get_queue(&vkb_device, .Graphics)
    if graphics_queue_err != nil {
        fmt.eprintfln("Failed to get graphics queue: %#v", graphics_queue_err)
        return
    }
}
```

See [Triangle Example](./examples//triangle//triangle.odin) for an example that renders a triangle
to the screen.

[Odin Language]: https://odin-lang.org/
[vk-bootstrap]: https://github.com/charles-lunarg/vk-bootstrap/tree/main

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