MrUnknownDE/examples-image-loading
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Reorganizes scene

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Adds comments, renamed methods in `SlideshowFrame.cs`
Moved materials to `Materials\` folder
Simplifies shaders (Standard Lite -> Diffuse, Alpha Blended Particle-> Unlit
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2023-02-21 20:38:40 +01:00
parent e709a98c2d
commit ca1271c269
14 changed files with 288 additions and 174 deletions
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61
Assets/_Project/Frame/SlideshowFrame.cs
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@@ -1,42 +1,50 @@
using UdonSharp;
using UnityEngine;
using UnityEngine.Serialization;
using UnityEngine.UI;
using VRC.SDK3.Image;
using VRC.SDK3.StringLoading;
using VRC.SDKBase;
using VRC.Udon.Common.Interfaces;
[UdonBehaviourSyncMode(BehaviourSyncMode.None)]
public class SlideshowFrame : UdonSharpBehaviour
{
public VRCUrl[] imageUrls;
public VRCUrl stringUrl;
public new Renderer renderer;
public Text field;
public float slideDurationSeconds = 10f;
[SerializeField, Tooltip("URLs of images to load")]
private VRCUrl[] imageUrls;
[SerializeField, Tooltip("URL of text file containing captions for images, one caption per line.")]
private VRCUrl stringUrl;
[SerializeField, Tooltip("Renderer to show downloaded images on.")]
private new Renderer renderer;
[SerializeField, Tooltip("Text field for captions.")]
private Text field;
[SerializeField, Tooltip("Duration in seconds until the next image is shown.")]
private float slideDurationSeconds = 10f;
// Private Variables
private int _loadedIndex = -1;
private VRCImageDownloader _imageDownloader;
private IUdonEventReceiver udonEventReceiver;
private IUdonEventReceiver _udonEventReceiver;
private string[] _captions = new string[0];
private Texture2D[] _textures;
private Texture2D[] _downloadedTextures;
void Start()
private void Start()
{
// Cast self to the type needed for Image and String Loading methods
udonEventReceiver = (IUdonEventReceiver)this;
// Downloaded textures will be cached in a texture array.
_downloadedTextures = new Texture2D[imageUrls.Length];
// Track which downloads have been completed already
// _downloadsComplete = new bool[rgbUrl.Length];
_textures = new Texture2D[imageUrls.Length];
// Construct Image Downloader to reuse
// It's important to store the VRCImageDownloader as a variable, to stop it from being garbage collected!
_imageDownloader = new VRCImageDownloader();
// Load Captions
VRCStringDownloader.LoadUrl(stringUrl, udonEventReceiver);
// To receive Image and String loading events, 'this' is casted to the type needed
_udonEventReceiver = (IUdonEventReceiver)this;
// Captions are downloaded once. On success, OnImageLoadSuccess() will be called.
VRCStringDownloader.LoadUrl(stringUrl, _udonEventReceiver);
// Load the next image. Then do it again, and again, and...
LoadNextRecursive();
}
@@ -48,22 +56,28 @@ public class SlideshowFrame : UdonSharpBehaviour
private void LoadNext()
{
// All clients share the same server time. That's used to sync the currently displayed image.
_loadedIndex = (int)(Networking.GetServerTimeInMilliseconds() / 1000f / slideDurationSeconds) % imageUrls.Length;
var nextTexture = _textures[_loadedIndex];
var nextTexture = _downloadedTextures[_loadedIndex];
if (nextTexture != null)
{
// Image already downloaded! No need to download it again.
renderer.sharedMaterial.mainTexture = nextTexture;
}
else
{
var rgbInfo = new TextureInfo();
rgbInfo.GenerateMipMaps = true;
_imageDownloader.DownloadImage(imageUrls[_loadedIndex], renderer.material, udonEventReceiver, rgbInfo);
_imageDownloader.DownloadImage(imageUrls[_loadedIndex], renderer.material, _udonEventReceiver, rgbInfo);
}
UpdateCaptionText();
}
// Set caption if one is provided
private void UpdateCaptionText()
{
if (_loadedIndex < _captions.Length)
{
field.text = _captions[_loadedIndex];
@@ -77,6 +91,7 @@ public class SlideshowFrame : UdonSharpBehaviour
public override void OnStringLoadSuccess(IVRCStringDownload result)
{
_captions = result.Result.Split('\n');
UpdateCaptionText();
}
public override void OnStringLoadError(IVRCStringDownload result)
@@ -88,7 +103,7 @@ public class SlideshowFrame : UdonSharpBehaviour
{
Debug.Log($"Image loaded: {result.SizeInMemoryBytes} bytes.");
_textures[_loadedIndex] = result.Result;
_downloadedTextures[_loadedIndex] = result.Result;
}
public override void OnImageLoadError(IVRCImageDownload result)