示例#1
0
        /// <summary>
        /// Gets a writable region from GPU mapped memory.
        /// </summary>
        /// <param name="range">Range</param>
        /// <param name="tracked">True if write tracking is triggered on the span</param>
        /// <returns>A writable region with the data at the specified memory location</returns>
        public WritableRegion GetWritableRegion(MultiRange range, bool tracked = false)
        {
            if (range.Count == 1)
            {
                MemoryRange subrange = range.GetSubRange(0);

                return(GetWritableRegion(subrange.Address, (int)subrange.Size, tracked));
            }
            else
            {
                Memory <byte> memory = new byte[range.GetSize()];

                int offset = 0;
                for (int i = 0; i < range.Count; i++)
                {
                    var currentRange = range.GetSubRange(i);
                    int size         = (int)currentRange.Size;
                    if (currentRange.Address != MemoryManager.PteUnmapped)
                    {
                        GetSpan(currentRange.Address, size).CopyTo(memory.Span.Slice(offset, size));
                    }
                    offset += size;
                }

                return(new WritableRegion(new MultiRangeWritableBlock(range, this), 0, memory, tracked));
            }
        }
示例#2
0
        /// <summary>
        /// Gets a span of data from the application process.
        /// </summary>
        /// <param name="range">Ranges of physical memory where the data is located</param>
        /// <param name="tracked">True if read tracking is triggered on the span</param>
        /// <returns>A read only span of the data at the specified memory location</returns>
        public ReadOnlySpan <byte> GetSpan(MultiRange range, bool tracked = false)
        {
            if (range.Count == 1)
            {
                var singleRange = range.GetSubRange(0);
                if (singleRange.Address != MemoryManager.PteUnmapped)
                {
                    return(_cpuMemory.GetSpan(singleRange.Address, (int)singleRange.Size, tracked));
                }
            }

            Span <byte> data = new byte[range.GetSize()];

            int offset = 0;

            for (int i = 0; i < range.Count; i++)
            {
                var currentRange = range.GetSubRange(i);
                int size         = (int)currentRange.Size;
                if (currentRange.Address != MemoryManager.PteUnmapped)
                {
                    _cpuMemory.GetSpan(currentRange.Address, size, tracked).CopyTo(data.Slice(offset, size));
                }
                offset += size;
            }

            return(data);
        }