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use std::sync::Arc;
use erupt::{vk, ExtendableFromConst};
#[cfg(feature = "tracing")]
use tracing1::error;
use crate::context::Context;
use crate::{AscheError, Result};
#[derive(Debug)]
pub struct DescriptorPool {
pub raw: vk::DescriptorPool,
context: Arc<Context>,
}
impl Drop for DescriptorPool {
fn drop(&mut self) {
unsafe {
self.context
.device
.destroy_descriptor_pool(Some(self.raw), None);
};
}
}
impl DescriptorPool {
pub(crate) fn new(context: Arc<Context>, pool: vk::DescriptorPool) -> Self {
Self { context, raw: pool }
}
pub fn create_descriptor_set(
&self,
name: &str,
layout: &DescriptorSetLayout,
descriptor_count: Option<u32>,
) -> Result<DescriptorSet> {
let counts = if let Some(count) = descriptor_count {
vec![count]
} else {
vec![]
};
let layouts = [layout.raw];
let info = vk::DescriptorSetAllocateInfoBuilder::new()
.descriptor_pool(self.raw)
.set_layouts(&layouts);
let variable_info = vk::DescriptorSetVariableDescriptorCountAllocateInfoBuilder::new()
.descriptor_counts(&counts);
let info = if descriptor_count.is_some() {
info.extend_from(&variable_info)
} else {
info
};
let sets =
unsafe { self.context.device.allocate_descriptor_sets(&info) }.map_err(|err| {
#[cfg(feature = "tracing")]
error!("Unable to allocate a descriptor set: {}", err);
AscheError::VkResult(err)
})?;
debug_assert_eq!(sets.len(), 1);
let set = sets[0];
self.context
.set_object_name(name, vk::ObjectType::DESCRIPTOR_SET, set.0)?;
Ok(DescriptorSet {
context: self.context.clone(),
pool: self.raw,
raw: set,
})
}
pub fn free_sets(&self) -> Result<()> {
unsafe { self.context.device.reset_descriptor_pool(self.raw, None) }.map_err(|err| {
#[cfg(feature = "tracing")]
error!("Unable reset a descriptor pool: {}", err);
AscheError::VkResult(err)
})?;
Ok(())
}
}
#[derive(Debug)]
pub struct DescriptorSetLayout {
pub raw: vk::DescriptorSetLayout,
context: Arc<Context>,
}
impl Drop for DescriptorSetLayout {
fn drop(&mut self) {
unsafe {
self.context
.device
.destroy_descriptor_set_layout(Some(self.raw), None);
};
}
}
impl DescriptorSetLayout {
pub(crate) fn new(context: Arc<Context>, layout: vk::DescriptorSetLayout) -> Self {
Self {
context,
raw: layout,
}
}
}
#[derive(Debug)]
pub struct DescriptorSet {
pub raw: vk::DescriptorSet,
pool: vk::DescriptorPool,
context: Arc<Context>,
}
impl DescriptorSet {
pub fn free(&mut self) -> Result<()> {
let sets = [self.raw];
unsafe { self.context.device.free_descriptor_sets(self.pool, &sets) }.map_err(|err| {
#[cfg(feature = "tracing")]
error!("Unable to free a descriptor set: {}", err);
AscheError::VkResult(err)
})?;
Ok(())
}
}