private void DestroySurface()
{
if (surface != SharpVulkan.Surface.Null)
{
context.Finish();
context.Instance.DestroySurface(surface);
surface = SharpVulkan.Surface.Null;
}
}
internal void GetData(Format dstFormat, int level, int x, int y, int width, int height, IntPtr data)
{
if (IsPvrtc1Format(Format))
{
throw new NotImplementedException();
}
var dataSize = GraphicsUtility.CalculateImageDataSize(Format, width, height);
context.EnsureReadbackBuffer((ulong)dataSize);
context.EndRenderPass();
context.EnsureCommandBuffer();
var preMemoryBarrier = new SharpVulkan.ImageMemoryBarrier {
StructureType = SharpVulkan.StructureType.ImageMemoryBarrier,
Image = image,
OldLayout = SharpVulkan.ImageLayout.ShaderReadOnlyOptimal,
NewLayout = SharpVulkan.ImageLayout.TransferSourceOptimal,
SourceAccessMask = SharpVulkan.AccessFlags.ShaderRead,
DestinationAccessMask = SharpVulkan.AccessFlags.TransferRead,
SubresourceRange = new SharpVulkan.ImageSubresourceRange(SharpVulkan.ImageAspectFlags.Color, 0, 1, (uint)level, 1)
};
context.CommandBuffer.PipelineBarrier(
SharpVulkan.PipelineStageFlags.VertexShader | SharpVulkan.PipelineStageFlags.FragmentShader,
SharpVulkan.PipelineStageFlags.Transfer, SharpVulkan.DependencyFlags.None,
0, null, 0, null, 1, &preMemoryBarrier);
var copyRegion = new SharpVulkan.BufferImageCopy {
BufferOffset = 0,
BufferRowLength = (uint)width,
BufferImageHeight = (uint)height,
ImageOffset = new SharpVulkan.Offset3D(x, y, 0),
ImageExtent = new SharpVulkan.Extent3D((uint)width, (uint)height, 1),
ImageSubresource = new SharpVulkan.ImageSubresourceLayers(SharpVulkan.ImageAspectFlags.Color, 0, 1, (uint)level)
};
context.CommandBuffer.CopyImageToBuffer(
image, SharpVulkan.ImageLayout.TransferSourceOptimal, context.ReadbackBuffer, 1, ©Region);
var postMemoryBarrier = new SharpVulkan.ImageMemoryBarrier {
StructureType = SharpVulkan.StructureType.ImageMemoryBarrier,
Image = image,
OldLayout = SharpVulkan.ImageLayout.TransferSourceOptimal,
NewLayout = SharpVulkan.ImageLayout.ShaderReadOnlyOptimal,
SourceAccessMask = SharpVulkan.AccessFlags.TransferRead,
DestinationAccessMask = SharpVulkan.AccessFlags.ShaderRead,
SubresourceRange = new SharpVulkan.ImageSubresourceRange(SharpVulkan.ImageAspectFlags.Color, 0, 1, (uint)level, 1)
};
context.CommandBuffer.PipelineBarrier(
SharpVulkan.PipelineStageFlags.Transfer,
SharpVulkan.PipelineStageFlags.VertexShader | SharpVulkan.PipelineStageFlags.FragmentShader,
SharpVulkan.DependencyFlags.None, 0, null, 0, null, 1, &postMemoryBarrier);
context.Finish();
var readbackBufferMemory = context.ReadbackBufferMemory;
var readbackBufferMappedMemory = context.MemoryAllocator.Map(readbackBufferMemory);
try {
context.MemoryAllocator.InvalidateMappedMemoryRange(readbackBufferMemory, 0, (ulong)dataSize);
if (dstFormat == Format)
{
GraphicsUtility.CopyMemory(data, readbackBufferMappedMemory, Format.GetSize() * width * height);
}
else
{
var decoder = FormatConverter.GetDecoder(Format);
var encoder = FormatConverter.GetEncoder(dstFormat);
var srcTexelSize = Format.GetSize();
var dstTexelSize = dstFormat.GetSize();
var srcData = readbackBufferMappedMemory;
var dstData = data;
var texelCount = width * height;
while (texelCount-- > 0)
{
encoder(dstData, decoder(srcData));
srcData += srcTexelSize;
dstData += dstTexelSize;
}
}
} finally {
context.MemoryAllocator.Unmap(readbackBufferMemory);
}
}