From c48b54f3fb7bbe9046915eb99eca02fa84dc55c9 Mon Sep 17 00:00:00 2001
From: tcmal <me@aria.rip>
Date: Sun, 25 Aug 2024 17:44:22 +0100
Subject: feat(render): multithreaded texture loading

also a bunch of supporting changes
---
 stockton-render/src/draw/texture/block.rs | 63 +++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 stockton-render/src/draw/texture/block.rs

(limited to 'stockton-render/src/draw/texture/block.rs')

diff --git a/stockton-render/src/draw/texture/block.rs b/stockton-render/src/draw/texture/block.rs
new file mode 100644
index 0000000..7735f5c
--- /dev/null
+++ b/stockton-render/src/draw/texture/block.rs
@@ -0,0 +1,63 @@
+use super::{loader::BlockRef, repo::BLOCK_SIZE};
+use crate::types::*;
+
+use arrayvec::ArrayVec;
+use hal::prelude::*;
+use rendy_memory::{Allocator, Block};
+use std::{iter::once, mem::ManuallyDrop};
+
+pub struct TexturesBlock<B: Block<back::Backend>> {
+    pub id: BlockRef,
+    pub descriptor_set: ManuallyDrop<RDescriptorSet>,
+    pub imgs: ArrayVec<[LoadedImage<B>; BLOCK_SIZE]>,
+}
+
+impl<B: Block<back::Backend>> TexturesBlock<B> {
+    pub fn deactivate<T: Allocator<back::Backend, Block = B>>(
+        mut self,
+        device: &mut Device,
+        tex_alloc: &mut T,
+        desc_alloc: &mut DescriptorAllocator,
+    ) {
+        unsafe {
+            use std::ptr::read;
+
+            // Descriptor set
+            desc_alloc.free(once(read(&*self.descriptor_set)));
+
+            // Images
+            self.imgs
+                .drain(..)
+                .map(|x| x.deactivate(device, tex_alloc))
+                .for_each(|_| {});
+        }
+    }
+}
+
+pub struct LoadedImage<B: Block<back::Backend>> {
+    pub mem: ManuallyDrop<B>,
+    pub img: ManuallyDrop<Image>,
+    pub img_view: ManuallyDrop<ImageView>,
+    pub sampler: ManuallyDrop<Sampler>,
+    pub row_size: usize,
+    pub height: u32,
+    pub width: u32,
+}
+
+impl<B: Block<back::Backend>> LoadedImage<B> {
+    pub fn deactivate<T: Allocator<back::Backend, Block = B>>(
+        self,
+        device: &mut Device,
+        alloc: &mut T,
+    ) {
+        unsafe {
+            use std::ptr::read;
+
+            device.destroy_image_view(read(&*self.img_view));
+            device.destroy_image(read(&*self.img));
+            device.destroy_sampler(read(&*self.sampler));
+
+            alloc.free(device, read(&*self.mem));
+        }
+    }
+}
-- 
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