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use super::RenderGraphError; use crate::renderer::{RenderResourceId, RenderResourceType}; use std::borrow::Cow; #[derive(Debug, Clone)] pub struct ResourceSlot { pub resource: Option<RenderResourceId>, pub info: ResourceSlotInfo, } #[derive(Default, Debug, Clone)] pub struct ResourceSlots { slots: Vec<ResourceSlot>, } #[derive(Debug, Clone, Eq, PartialEq)] pub enum SlotLabel { Index(usize), Name(Cow<'static, str>), } impl From<&SlotLabel> for SlotLabel { fn from(value: &SlotLabel) -> Self { value.clone() } } impl From<String> for SlotLabel { fn from(value: String) -> Self { SlotLabel::Name(value.into()) } } impl From<&'static str> for SlotLabel { fn from(value: &'static str) -> Self { SlotLabel::Name(value.into()) } } impl From<usize> for SlotLabel { fn from(value: usize) -> Self { SlotLabel::Index(value) } } impl ResourceSlots { pub fn set(&mut self, label: impl Into<SlotLabel>, resource: RenderResourceId) { let mut slot = self.get_slot_mut(label).unwrap(); slot.resource = Some(resource); } pub fn get(&self, label: impl Into<SlotLabel>) -> Option<RenderResourceId> { let slot = self.get_slot(label).unwrap(); slot.resource.clone() } pub fn get_slot(&self, label: impl Into<SlotLabel>) -> Result<&ResourceSlot, RenderGraphError> { let label = label.into(); let index = self.get_slot_index(&label)?; self.slots .get(index) .ok_or(RenderGraphError::InvalidNodeSlot(label)) } pub fn get_slot_mut( &mut self, label: impl Into<SlotLabel>, ) -> Result<&mut ResourceSlot, RenderGraphError> { let label = label.into(); let index = self.get_slot_index(&label)?; self.slots .get_mut(index) .ok_or(RenderGraphError::InvalidNodeSlot(label)) } pub fn get_slot_index(&self, label: impl Into<SlotLabel>) -> Result<usize, RenderGraphError> { let label = label.into(); match label { SlotLabel::Index(index) => Ok(index), SlotLabel::Name(ref name) => self .slots .iter() .enumerate() .find(|(_i, s)| s.info.name == *name) .map(|(i, _s)| i) .ok_or(RenderGraphError::InvalidNodeSlot(label)), } } pub fn iter(&self) -> impl Iterator<Item = &ResourceSlot> { self.slots.iter() } pub fn iter_mut(&mut self) -> impl Iterator<Item = &mut ResourceSlot> { self.slots.iter_mut() } pub fn len(&self) -> usize { self.slots.len() } pub fn is_empty(&self) -> bool { self.slots.is_empty() } } impl From<&ResourceSlotInfo> for ResourceSlot { fn from(slot: &ResourceSlotInfo) -> Self { ResourceSlot { resource: None, info: slot.clone(), } } } impl From<&[ResourceSlotInfo]> for ResourceSlots { fn from(slots: &[ResourceSlotInfo]) -> Self { ResourceSlots { slots: slots .iter() .map(|s| s.into()) .collect::<Vec<ResourceSlot>>(), } } } #[derive(Clone, Debug)] pub struct ResourceSlotInfo { pub name: Cow<'static, str>, pub resource_type: RenderResourceType, } impl ResourceSlotInfo { pub fn new(name: impl Into<Cow<'static, str>>, resource_type: RenderResourceType) -> Self { ResourceSlotInfo { name: name.into(), resource_type, } } }