private void EnsureBufferSize(int dataSizeInBytes) { if (_bufferCapacity < (ulong)dataSizeInBytes) { VkBufferCreateInfo newBufferCI = VkBufferCreateInfo.New(); newBufferCI.size = (ulong)dataSizeInBytes; newBufferCI.usage = _usage | VkBufferUsageFlags.TransferDst; VkResult result = vkCreateBuffer(_rc.Device, ref newBufferCI, null, out VkBuffer newBuffer); CheckResult(result); vkGetBufferMemoryRequirements(_rc.Device, newBuffer, out VkMemoryRequirements newMemoryRequirements); uint memoryType = FindMemoryType(_rc.PhysicalDevice, newMemoryRequirements.memoryTypeBits, _memoryProperties); VkMemoryBlock newMemory = _rc.MemoryManager.Allocate( memoryType, newMemoryRequirements.size, newMemoryRequirements.alignment); result = vkBindBufferMemory(_rc.Device, newBuffer, newMemory.DeviceMemory, newMemory.Offset); CheckResult(result); if (_bufferDataSize > 0) { VkCommandBuffer copyCmd = _rc.BeginOneTimeCommands(); VkBufferCopy region = new VkBufferCopy(); region.size = _bufferDataSize; vkCmdCopyBuffer(copyCmd, _buffer, newBuffer, 1, ref region); _rc.EndOneTimeCommands(copyCmd, VkFence.Null); } _rc.MemoryManager.Free(_memory); vkDestroyBuffer(_rc.Device, _buffer, null); _buffer = newBuffer; _memory = newMemory; _bufferCapacity = (ulong)dataSizeInBytes; } }
private void CopyDataSingleStagingBuffer(IntPtr pixelsFront, IntPtr pixelsBack, IntPtr pixelsLeft, IntPtr pixelsRight, IntPtr pixelsTop, IntPtr pixelsBottom, VkMemoryRequirements memReqs) { VkBufferCreateInfo bufferCI = VkBufferCreateInfo.New(); bufferCI.size = memReqs.size; bufferCI.usage = VkBufferUsageFlags.TransferSrc; vkCreateBuffer(_device, ref bufferCI, null, out VkBuffer stagingBuffer); vkGetBufferMemoryRequirements(_device, stagingBuffer, out VkMemoryRequirements stagingMemReqs); VkMemoryBlock stagingMemory = _memoryManager.Allocate( FindMemoryType( _physicalDevice, stagingMemReqs.memoryTypeBits, VkMemoryPropertyFlags.HostVisible | VkMemoryPropertyFlags.HostCoherent), stagingMemReqs.size, stagingMemReqs.alignment); VkResult result = vkBindBufferMemory(_device, stagingBuffer, stagingMemory.DeviceMemory, 0); CheckResult(result); StackList <IntPtr, Size6IntPtr> faces = new StackList <IntPtr, Size6IntPtr>(); faces.Add(pixelsRight); faces.Add(pixelsLeft); faces.Add(pixelsTop); faces.Add(pixelsBottom); faces.Add(pixelsBack); faces.Add(pixelsFront); for (uint i = 0; i < 6; i++) { VkImageSubresource subresource; subresource.aspectMask = VkImageAspectFlags.Color; subresource.arrayLayer = i; subresource.mipLevel = 0; vkGetImageSubresourceLayout(_device, _image, ref subresource, out VkSubresourceLayout faceLayout); void *mappedPtr; result = vkMapMemory(_device, stagingMemory.DeviceMemory, faceLayout.offset, faceLayout.size, 0, &mappedPtr); CheckResult(result); Buffer.MemoryCopy((void *)faces[i], mappedPtr, faceLayout.size, faceLayout.size); vkUnmapMemory(_device, stagingMemory.DeviceMemory); } StackList <VkBufferImageCopy, Size512Bytes> copyRegions = new StackList <VkBufferImageCopy, Size512Bytes>(); for (uint i = 0; i < 6; i++) { VkImageSubresource subres; subres.aspectMask = VkImageAspectFlags.Color; subres.mipLevel = 0; subres.arrayLayer = i; vkGetImageSubresourceLayout(_device, _image, ref subres, out VkSubresourceLayout layout); VkBufferImageCopy copyRegion; copyRegion.bufferOffset = layout.offset; copyRegion.bufferImageHeight = 0; copyRegion.bufferRowLength = 0; copyRegion.imageExtent.width = (uint)Width; copyRegion.imageExtent.height = (uint)Height; copyRegion.imageExtent.depth = 1; copyRegion.imageOffset.x = 0; copyRegion.imageOffset.y = 0; copyRegion.imageOffset.z = 0; copyRegion.imageSubresource.baseArrayLayer = i; copyRegion.imageSubresource.aspectMask = VkImageAspectFlags.Color; copyRegion.imageSubresource.layerCount = 1; copyRegion.imageSubresource.mipLevel = 0; copyRegions.Add(copyRegion); } VkFenceCreateInfo fenceCI = VkFenceCreateInfo.New(); result = vkCreateFence(_device, ref fenceCI, null, out VkFence copyFence); CheckResult(result); TransitionImageLayout(_image, (uint)MipLevels, 0, 6, _imageLayout, VkImageLayout.TransferDstOptimal); VkCommandBuffer copyCmd = _rc.BeginOneTimeCommands(); vkCmdCopyBufferToImage(copyCmd, stagingBuffer, _image, VkImageLayout.TransferDstOptimal, copyRegions.Count, (IntPtr)copyRegions.Data); _rc.EndOneTimeCommands(copyCmd, copyFence); result = vkWaitForFences(_device, 1, ref copyFence, true, ulong.MaxValue); CheckResult(result); vkDestroyBuffer(_device, stagingBuffer, null); _memoryManager.Free(stagingMemory); }