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);
}