/// <summary>
/// Processes a shader cache background operation.
/// </summary>
/// <param name="task">Task to process</param>
private void ProcessTask(CacheFileOperationTask task)
{
switch (task.Type)
{
case CacheFileOperation.AddShader:
AddShaderData data = (AddShaderData)task.Data;
try
{
_hostStorage.AddShader(_context, data.Program, data.HostCode);
}
catch (DiskCacheLoadException diskCacheLoadException)
{
Logger.Error?.Print(LogClass.Gpu, $"Error writing shader to disk cache. {diskCacheLoadException.Message}");
}
catch (IOException ioException)
{
Logger.Error?.Print(LogClass.Gpu, $"Error writing shader to disk cache. {ioException.Message}");
}
break;
}
}
/// <summary>
/// Loads all shaders from the cache.
/// </summary>
public void LoadShaders()
{
Thread[] workThreads = new Thread[ThreadCount];
for (int index = 0; index < ThreadCount; index++)
{
workThreads[index] = new Thread(ProcessAsyncQueue)
{
Name = $"Gpu.AsyncTranslationThread.{index}"
};
}
int programCount = _hostStorage.GetProgramCount();
_compiledCount = 0;
_totalCount = programCount;
_stateChangeCallback(ShaderCacheState.Start, 0, programCount);
Logger.Info?.Print(LogClass.Gpu, $"Loading {programCount} shaders from the cache...");
for (int index = 0; index < ThreadCount; index++)
{
workThreads[index].Start(_cancellationToken);
}
try
{
_hostStorage.LoadShaders(_context, this);
}
catch (DiskCacheLoadException diskCacheLoadException)
{
Logger.Warning?.Print(LogClass.Gpu, $"Error loading the shader cache. {diskCacheLoadException.Message}");
// If we can't even access the file, then we also can't rebuild.
if (diskCacheLoadException.Result != DiskCacheLoadResult.NoAccess)
{
_needsHostRegen = true;
}
}
catch (InvalidDataException invalidDataException)
{
Logger.Warning?.Print(LogClass.Gpu, $"Error decompressing the shader cache file. {invalidDataException.Message}");
_needsHostRegen = true;
}
catch (IOException ioException)
{
Logger.Warning?.Print(LogClass.Gpu, $"Error reading the shader cache file. {ioException.Message}");
_needsHostRegen = true;
}
_asyncTranslationQueue.CompleteAdding();
for (int index = 0; index < ThreadCount; index++)
{
workThreads[index].Join();
}
CheckCompilationBlocking();
if (_needsHostRegen)
{
// Rebuild both shared and host cache files.
// Rebuilding shared is required because the shader information returned by the translator
// might have changed, and so we have to reconstruct the file with the new information.
try
{
_hostStorage.ClearSharedCache();
_hostStorage.ClearHostCache(_context);
if (_programList.Count != 0)
{
Logger.Info?.Print(LogClass.Gpu, $"Rebuilding {_programList.Count} shaders...");
using var streams = _hostStorage.GetOutputStreams(_context);
foreach (var kv in _programList)
{
if (!Active)
{
break;
}
CachedShaderProgram program = kv.Value;
_hostStorage.AddShader(_context, program, program.HostProgram.GetBinary(), streams);
}
Logger.Info?.Print(LogClass.Gpu, $"Rebuilt {_programList.Count} shaders successfully.");
}
else
{
_hostStorage.ClearGuestCache();
Logger.Info?.Print(LogClass.Gpu, "Shader cache deleted due to corruption.");
}
}
catch (DiskCacheLoadException diskCacheLoadException)
{
Logger.Warning?.Print(LogClass.Gpu, $"Error deleting the shader cache. {diskCacheLoadException.Message}");
}
catch (IOException ioException)
{
Logger.Warning?.Print(LogClass.Gpu, $"Error deleting the shader cache file. {ioException.Message}");
}
}
Logger.Info?.Print(LogClass.Gpu, "Shader cache loaded.");
_stateChangeCallback(ShaderCacheState.Loaded, programCount, programCount);
}