Function DoLoadResource

engine/resource/src/async/load_queue.cpp:21–72

{

dmResource::Result DoLoadResource(dmResource::HFactory factory, HRequest request, dmResource::LoadBufferType* buffer, LoadResult* result)
{
    dmResource::HResourceType resource_type = request->m_PreloadInfo.m_Type;
    uint32_t preload_size = RESOURCE_INVALID_PRELOAD_SIZE;
    if (ResourceTypeIsStreaming(resource_type))
    {
        preload_size = ResourceTypeGetPreloadSize(resource_type);
    }

    result->m_LoadResult = dmResource::LoadResourceToBuffer(factory, request->m_CanonicalPath, request->m_Name, preload_size, &request->m_ResourceSize, &request->m_BufferSize, buffer);
    result->m_PreloadResult = dmResource::RESULT_PENDING;
    result->m_PreloadData   = 0;
    result->m_IsBufferOwnershipTransferred = false;

    if (result->m_LoadResult == dmResource::RESULT_OK)
    {
        if (request->m_BufferSize == 0)
        {
            // Only happens for unit tests, the buffer must not be null
            // We only check it, but we don't use it
            buffer->SetCapacity(1);
            buffer->SetSize(0);
        }

        assert(buffer->Size() == request->m_BufferSize);
        assert(request->m_BufferSize <= request->m_ResourceSize);
        if (request->m_PreloadInfo.m_CompleteFunction)
        {
            ResourcePreloadParams params;
            params.m_Factory                = factory;
            params.m_Context                = request->m_PreloadInfo.m_Context;
            params.m_Buffer                 = buffer->Begin();
            params.m_BufferSize             = request->m_BufferSize;
            params.m_FileSize               = request->m_ResourceSize;
            params.m_IsBufferPartial        = request->m_BufferSize != request->m_ResourceSize;
            params.m_IsBufferTransferrable  = 1;
            params.m_Filename               = request->m_CanonicalPath;
            params.m_HintInfo               = &request->m_PreloadInfo.m_HintInfo;

            // out
            params.m_PreloadData = &result->m_PreloadData;
            params.m_IsBufferOwnershipTransferred = &result->m_IsBufferOwnershipTransferred;

            result->m_PreloadResult = (dmResource::Result)request->m_PreloadInfo.m_CompleteFunction(&params);
        }
        else
        {
            result->m_PreloadResult = dmResource::RESULT_OK;
        }
    }
    return dmResource::RESULT_OK;
}

} // namespace dmLoadQueue