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|
use super::{
block::LoadedImage, block::TexturesBlock, repo::BLOCK_SIZE, resolver::TextureResolver,
staging_buffer::StagingBuffer, LoadableImage, PIXEL_SIZE,
};
use crate::types::*;
use anyhow::{Context, Result};
use arrayvec::ArrayVec;
use hal::{
format::{Aspects, Format, Swizzle},
image::{
Filter, SamplerDesc, SubresourceLayers, SubresourceRange, Usage as ImgUsage, ViewKind,
WrapMode,
},
memory::SparseFlags,
MemoryTypeId,
};
use rendy_memory::{Allocator, Block};
use std::mem::ManuallyDrop;
use thiserror::Error;
#[derive(Error, Debug)]
pub enum TextureLoadError {
#[error("No available resources")]
NoResources,
}
pub const FORMAT: Format = Format::Rgba8Srgb;
pub const RESOURCES: SubresourceRange = SubresourceRange {
aspects: Aspects::COLOR,
level_start: 0,
level_count: Some(1),
layer_start: 0,
layer_count: Some(1),
};
pub const LAYERS: SubresourceLayers = SubresourceLayers {
aspects: Aspects::COLOR,
level: 0,
layers: 0..1,
};
pub struct TextureLoadConfig<R: TextureResolver> {
pub resolver: R,
pub filter: Filter,
pub wrap_mode: WrapMode,
}
pub struct QueuedLoad<B: Block<back::Backend>> {
pub fence: FenceT,
pub buf: CommandBufferT,
pub block: TexturesBlock<B>,
pub staging_bufs: ArrayVec<[StagingBuffer; BLOCK_SIZE]>,
}
impl<B: Block<back::Backend>> QueuedLoad<B> {
pub fn dissolve(
self,
) -> (
(FenceT, CommandBufferT),
ArrayVec<[StagingBuffer; BLOCK_SIZE]>,
TexturesBlock<B>,
) {
((self.fence, self.buf), self.staging_bufs, self.block)
}
}
pub fn tex_size_info<T: LoadableImage>(img: &T, obcpa: hal::buffer::Offset) -> (usize, usize) {
let initial_row_size = PIXEL_SIZE * img.width() as usize;
let row_alignment_mask = obcpa as u32 - 1;
let row_size = ((initial_row_size as u32 + row_alignment_mask) & !row_alignment_mask) as usize;
let total_size = (row_size * (img.height() as usize)) as u64;
debug_assert!(row_size as usize >= initial_row_size);
(row_size, total_size as usize)
}
pub fn create_image_view<T, I>(
device: &mut DeviceT,
allocator: &mut T,
format: Format,
usage: ImgUsage,
img: &I,
) -> Result<(T::Block, ImageT)>
where
T: Allocator<back::Backend>,
I: LoadableImage,
{
// Make the image
let mut image_ref = unsafe {
use hal::image::{Kind, Tiling, ViewCapabilities};
device.create_image(
Kind::D2(img.width(), img.height(), 1, 1),
1,
format,
Tiling::Optimal,
usage,
SparseFlags::empty(),
ViewCapabilities::empty(),
)
}
.context("Error creating image")?;
// Allocate memory
let (block, _) = unsafe {
let requirements = device.get_image_requirements(&image_ref);
allocator.alloc(device, requirements.size, requirements.alignment)
}
.context("Error allocating memory")?;
unsafe {
device
.bind_image_memory(block.memory(), block.range().start, &mut image_ref)
.context("Error binding memory to image")?;
}
Ok((block, image_ref))
}
pub unsafe fn load_image<I: LoadableImage, R: TextureResolver>(
device: &mut DeviceT,
staging_allocator: &mut DynamicAllocator,
tex_allocator: &mut DynamicAllocator,
staging_memory_type: MemoryTypeId,
obcpa: u64,
img_data: I,
config: &TextureLoadConfig<R>,
) -> Result<(StagingBuffer, LoadedImage<DynamicBlock>)> {
// Calculate buffer size
let (row_size, total_size) = tex_size_info(&img_data, obcpa);
// Create staging buffer
let mut staging_buffer = StagingBuffer::new(
device,
staging_allocator,
total_size as u64,
staging_memory_type,
)
.context("Error creating staging buffer")?;
// Write to staging buffer
let mapped_memory = staging_buffer
.map_memory(device)
.context("Error mapping staged memory")?;
img_data.copy_into(mapped_memory, row_size);
staging_buffer.unmap_memory(device);
// Create image
let (img_mem, img) = create_image_view(
device,
tex_allocator,
FORMAT,
ImgUsage::SAMPLED | ImgUsage::TRANSFER_DST,
&img_data,
)
.context("Error creating image")?;
// Create image view
let img_view = device
.create_image_view(
&img,
ViewKind::D2,
FORMAT,
Swizzle::NO,
ImgUsage::SAMPLED | ImgUsage::TRANSFER_DST,
RESOURCES,
)
.context("Error creating image view")?;
// Create sampler
let sampler = device
.create_sampler(&SamplerDesc::new(config.filter, config.wrap_mode))
.context("Error creating sampler")?;
Ok((
staging_buffer,
LoadedImage {
mem: ManuallyDrop::new(img_mem),
img: ManuallyDrop::new(img),
img_view: ManuallyDrop::new(img_view),
sampler: ManuallyDrop::new(sampler),
row_size,
height: img_data.height(),
width: img_data.width(),
},
))
}
|
