/// <summary>
/// Unload previously loaded shader
/// </summary>
/// <param name="asset">Shader asset</param>
public void ShaderUnload(ShaderAsset asset)
{
if (asset == null)
{
return;
}
// Abort any existing async load for this asset
AbortAsyncShaderLoad(asset);
asset.InternalSetErrorStatus(RB.AssetStatus.Invalid, RB.Result.Undefined);
if (asset.shader != null)
{
asset.shader = null;
}
}
/// <summary>
/// Load a shader asset from given location
/// </summary>
/// <param name="fileName">Filename</param>
/// <param name="asset">Asset object to load into</param>
/// <param name="source">Source type</param>
/// <returns>True if successful</returns>
public bool ShaderLoad(string fileName, ShaderAsset asset, RB.AssetSource source)
{
if (asset == null)
{
return(false);
}
asset.progress = 0;
if (asset.shader != null)
{
asset.shader = null;
}
// Abort any existing async load for this asset
AbortAsyncShaderLoad(asset);
if (fileName == null)
{
Debug.LogError("Shader filename is null!");
asset.InternalSetErrorStatus(RB.AssetStatus.Failed, RB.Result.BadParam);
return(false);
}
fileName.Replace('\\', '/');
var asyncResource = new RBShaderLoader();
asyncResource.Load(fileName, asset, source);
if (asset.status == RB.AssetStatus.Ready)
{
return(true);
}
// Always add to async queue, even if immediately failed. This gives out consistent async method of error checking
mASyncShaders.Add(asyncResource);
return(true);
}
/// <summary>
/// Update asynchronous loading
/// </summary>
public void Update()
{
// If not loading then there is nothing to update
if (shaderAsset == null || shaderAsset.status != RB.AssetStatus.Loading)
{
return;
}
if (mResourceRequest != null)
{
if (mResourceRequest.isDone)
{
if (mResourceRequest.asset == null)
{
Debug.LogError("Could not load shader from " + path + ", make sure the resource is placed somehwere in Assets/Resources folder");
shaderAsset.InternalSetErrorStatus(RB.AssetStatus.Failed, RB.Result.Undefined);
}
else
{
var shader = (Shader)mResourceRequest.asset;
if (shader == null)
{
Debug.LogError("Could not load shader from " + path + ", make sure the resource is placed somehwere in Assets/Resources folder");
shaderAsset.InternalSetErrorStatus(RB.AssetStatus.Failed, RB.Result.NotFound);
return;
}
FinalizeShader(shader);
}
}
else
{
shaderAsset.progress = mResourceRequest.progress;
}
}
#if ADDRESSABLES_PACKAGE_AVAILABLE
else if (mAddressableRequest.IsValid())
{
if (mAddressableRequest.Status == AsyncOperationStatus.Failed)
{
// Can't really figure out failure reason
Addressables.Release(mAddressableRequest);
shaderAsset.SetErrorStatus(RB.AssetStatus.Failed, RB.Result.Undefined);
return;
}
else if (mAddressableRequest.Status == AsyncOperationStatus.Succeeded)
{
shaderAsset.progress = 1;
var shader = mAddressableRequest.Result;
if (shader == null)
{
Debug.Log("Could not load shader from " + path);
Addressables.Release(mAddressableRequest);
shaderAsset.SetErrorStatus(RB.AssetStatus.Failed, RB.Result.NotFound);
}
else
{
FinalizeShader(shader);
shaderAsset.addressableHandle = mAddressableRequest;
shaderAsset.SetErrorStatus(RB.AssetStatus.Ready, RB.Result.Success);
}
return;
}
if (!mAddressableRequest.IsDone)
{
shaderAsset.progress = mAddressableRequest.PercentComplete;
return;
}
}
#endif
// WWW not supported for shaders
}
/// <summary>
/// Load shader asset
/// </summary>
/// <param name="path">Path to load from</param>
/// <param name="asset">ShaderAsset to load into</param>
/// <param name="source">Source type</param>
/// <returns>True if successful</returns>
public bool Load(string path, ShaderAsset asset, RB.AssetSource source)
{
shaderAsset = asset;
this.path = path;
if (path == null)
{
shaderAsset.InternalSetErrorStatus(RB.AssetStatus.Failed, RB.Result.BadParam);
}
if (asset == null)
{
Debug.LogError("ShaderAsset is null!");
return(false);
}
if (source == RB.AssetSource.Resources)
{
// Synchronous load
if (path == null)
{
Debug.LogError("Shader filename is null!");
shaderAsset.InternalSetErrorStatus(RB.AssetStatus.Failed, RB.Result.BadParam);
return(false);
}
var shader = Resources.Load <Shader>(path);
if (shader == null)
{
Debug.LogError("Could not load shader from " + path + ", make sure the resource is placed somehwere in Assets/Resources folder");
shaderAsset.InternalSetErrorStatus(RB.AssetStatus.Failed, RB.Result.NotFound);
return(false);
}
return(FinalizeShader(shader));
}
else if (source == RB.AssetSource.WWW)
{
// Not a supported source, should never get here
shaderAsset.InternalSetErrorStatus(RB.AssetStatus.Failed, RB.Result.NotSupported);
return(false);
}
else if (source == RB.AssetSource.ResourcesAsync)
{
// Finally attempt async resource load
mResourceRequest = Resources.LoadAsync <Shader>(this.path);
if (mResourceRequest == null)
{
shaderAsset.InternalSetErrorStatus(RB.AssetStatus.Failed, RB.Result.NoResources);
return(false);
}
shaderAsset.progress = 0;
shaderAsset.InternalSetErrorStatus(RB.AssetStatus.Loading, RB.Result.Pending);
}
#if ADDRESSABLES_PACKAGE_AVAILABLE
else if (source == RB.AssetSource.AddressableAssets)
{
// Exceptions on LoadAssetAsync can't actually be caught... this might work in the future so leaving it here
try
{
mAddressableRequest = Addressables.LoadAssetAsync <Shader>(this.path);
}
catch (UnityEngine.AddressableAssets.InvalidKeyException e)
{
RBUtil.Unused(e);
shaderAsset.SetErrorStatus(RB.AssetStatus.Failed, RB.Result.NotFound);
return(false);
}
catch (Exception e)
{
RBUtil.Unused(e);
shaderAsset.SetErrorStatus(RB.AssetStatus.Failed, RB.Result.Undefined);
return(false);
}
// Check for an immediate failure
if (mAddressableRequest.Status == AsyncOperationStatus.Failed)
{
Addressables.Release(mAddressableRequest);
shaderAsset.SetErrorStatus(RB.AssetStatus.Failed, RB.Result.Undefined);
return(false);
}
shaderAsset.SetErrorStatus(RB.AssetStatus.Loading, RB.Result.Pending);
shaderAsset.progress = 0;
return(true);
}
#endif
else
{
shaderAsset.InternalSetErrorStatus(RB.AssetStatus.Failed, RB.Result.NotSupported);
return(false);
}
return(true);
}