sampler_factory.rs - source

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use crate::graphics::{Device, Graphics};

use anyhow::{Context, Result};
use ash::{version::DeviceV1_0, vk};

/// Types which implement this trait can create and destroy raw vulkan samplers.
pub trait SamplerFactory {
    /// Create a new sampler.
    ///
    /// # Unsafe Because
    ///
    /// - the caller must remember to destroy the sampler when they're done
    ///   with it.
    unsafe fn create_sampler(
        &self,
        debug_name: impl Into<String>,
        sampler_create_info: vk::SamplerCreateInfo,
    ) -> Result<vk::Sampler>;

    /// Destroy a sampler.
    ///
    /// # Unsafe Because
    ///
    /// - the caller must ensure that the sampler is not in use by the GPU when
    ///   it is destroyed.
    unsafe fn destroy_sampler(&self, sampler: vk::Sampler);
}

impl SamplerFactory for Graphics {
    /// Create a new sampler using the Graphics subsystem's logical device.
    unsafe fn create_sampler(
        &self,
        debug_name: impl Into<String>,
        sampler_create_info: vk::SamplerCreateInfo,
    ) -> Result<vk::Sampler> {
        self.device.create_sampler(debug_name, sampler_create_info)
    }

    unsafe fn destroy_sampler(&self, sampler: vk::Sampler) {
        self.device.destroy_sampler(sampler)
    }
}

impl SamplerFactory for Device {
    unsafe fn create_sampler(
        &self,
        debug_name: impl Into<String>,
        sampler_create_info: vk::SamplerCreateInfo,
    ) -> Result<vk::Sampler> {
        let owned_name = debug_name.into();
        let sampler = self
            .logical_device
            .create_sampler(&sampler_create_info, None)
            .with_context(|| {
                format!("unable to create sampler {:?}", owned_name.clone())
            })?;

        self.name_vulkan_object(owned_name, vk::ObjectType::SAMPLER, &sampler)?;

        Ok(sampler)
    }

    unsafe fn destroy_sampler(&self, sampler: vk::Sampler) {
        self.logical_device.destroy_sampler(sampler, None);
    }
}