Attempts to fix hdr_texture_loader.rs

crates/bevy_render/src/texture/hdr_texture_loader.rs

@@ -3,6 +3,7 @@ use crate::{
     texture::{Image, TextureFormatPixelInfo},
 };
 use bevy_asset::{io::Reader, AssetLoader, AsyncReadExt, LoadContext};
+use image::ImageDecoder;
 use serde::{Deserialize, Serialize};
 use thiserror::Error;
 use wgpu::{Extent3d, TextureDimension, TextureFormat};
@@ -47,17 +48,9 @@ impl AssetLoader for HdrTextureLoader {
             reader.read_to_end(&mut bytes).await?;
             let decoder = image::codecs::hdr::HdrDecoder::new(bytes.as_slice())?;
             let info = decoder.metadata();
-            let rgb_data = decoder.read_image_hdr()?;
-            let mut rgba_data = Vec::with_capacity(rgb_data.len() * format.pixel_size());
-
-            for rgb in rgb_data {
-                let alpha = 1.0f32;
-
-                rgba_data.extend_from_slice(&rgb.0[0].to_ne_bytes());
-                rgba_data.extend_from_slice(&rgb.0[1].to_ne_bytes());
-                rgba_data.extend_from_slice(&rgb.0[2].to_ne_bytes());
-                rgba_data.extend_from_slice(&alpha.to_ne_bytes());
-            }
+            let buffer_size = decoder.total_bytes().try_into().unwrap();
+            let mut rgba_data = Vec::with_capacity(buffer_size);
+            decoder.read_image(rgba_data.as_mut_slice())?;
 
             Ok(Image::new(
                 Extent3d {