public RenderPass(Device device, RenderPassCreateInfo info)
{
if (device == null)
{
throw new ArgumentNullException(nameof(device));
}
if (info == null)
{
throw new ArgumentNullException(nameof(info));
}
Device = device;
CreateRenderPass(info);
}
void CreateRenderPass(RenderPassCreateInfo mInfo)
{
unsafe
{
var info = new VkRenderPassCreateInfo();
info.sType = VkStructureType.RenderPassCreateInfo;
//for CreateInfo
int attachmentCount = 0;
int subpassCount = 0;
int dependencyCount = 0;
//for CreateInfo.subpasses
int totalInputAttachments = 0;
int totalColorAttachments = 0;
int totalResolveAttachments = 0;
int totalDepthStencilAttachments = 0;
int totalPreserveAttachments = 0;
if (mInfo.attachments != null)
{
attachmentCount = mInfo.attachments.Count;
}
if (mInfo.subpasses != null)
{
subpassCount = mInfo.subpasses.Count;
}
if (mInfo.dependencies != null)
{
dependencyCount = mInfo.dependencies.Count;
}
for (int i = 0; i < subpassCount; i++)
{
var subpass = mInfo.subpasses[i];
if (subpass.inputAttachments != null)
{
totalInputAttachments += subpass.inputAttachments.Count;
}
if (subpass.colorAttachments != null)
{
totalColorAttachments += subpass.colorAttachments.Count;
}
if (subpass.resolveAttachments != null)
{
totalResolveAttachments += subpass.resolveAttachments.Count;
}
if (subpass.depthStencilAttachment != null)
{
totalDepthStencilAttachments += 1;
}
if (subpass.preserveAttachments != null)
{
totalPreserveAttachments += subpass.preserveAttachments.Count;
}
}
//for CreateInfo
var attachments = stackalloc VkAttachmentDescription[attachmentCount];
var subpasses = stackalloc VkSubpassDescription[subpassCount];
var dependencies = stackalloc VkSubpassDependency[dependencyCount];
//for CreateInfo.subpasses
var inputAttachments = stackalloc VkAttachmentReference[totalInputAttachments];
var colorAttachments = stackalloc VkAttachmentReference[totalColorAttachments];
var resolveAttachments = stackalloc VkAttachmentReference[totalResolveAttachments];
var depthAttachments = stackalloc VkAttachmentReference[totalDepthStencilAttachments];
var preserveAttachments = stackalloc uint[totalPreserveAttachments];
int inputIndex = 0;
int colorIndex = 0;
int resolveIndex = 0;
int depthIndex = 0;
int preserveIndex = 0;
//marshal CreateInfo.attachments
for (int i = 0; i < attachmentCount; i++)
{
attachments[i].flags = mInfo.attachments[i].flags;
attachments[i].format = mInfo.attachments[i].format;
attachments[i].samples = mInfo.attachments[i].samples;
attachments[i].loadOp = mInfo.attachments[i].loadOp;
attachments[i].storeOp = mInfo.attachments[i].storeOp;
attachments[i].stencilLoadOp = mInfo.attachments[i].stencilLoadOp;
attachments[i].stencilStoreOp = mInfo.attachments[i].stencilStoreOp;
attachments[i].initialLayout = mInfo.attachments[i].initialLayout;
attachments[i].finalLayout = mInfo.attachments[i].finalLayout;
}
//marshal CreateInfo.subpasses
for (int i = 0; i < subpassCount; i++)
{
var subpass = mInfo.subpasses[i];
if (subpass.inputAttachments != null)
{
for (int j = 0; j < subpass.inputAttachments.Count; j++)
{
inputAttachments[j + inputIndex] = new VkAttachmentReference {
attachment = subpass.inputAttachments[j].attachment,
layout = subpass.inputAttachments[j].layout
};
}
subpasses[i].inputAttachmentCount = (uint)subpass.inputAttachments.Count;
subpasses[i].pInputAttachments = (IntPtr)(&inputAttachments[inputIndex]);
inputIndex += subpass.inputAttachments.Count;
}
if (subpass.colorAttachments != null)
{
for (int j = 0; j < subpass.colorAttachments.Count; j++)
{
colorAttachments[j + colorIndex] = new VkAttachmentReference {
attachment = subpass.colorAttachments[j].attachment,
layout = subpass.colorAttachments[j].layout
};
}
subpasses[i].colorAttachmentCount = (uint)subpass.colorAttachments.Count;
subpasses[i].pColorAttachments = (IntPtr)(&colorAttachments[colorIndex]);
colorIndex += subpass.colorAttachments.Count;
}
if (subpass.resolveAttachments != null)
{
for (int j = 0; j < subpass.resolveAttachments.Count; j++)
{
resolveAttachments[j + resolveIndex] = new VkAttachmentReference {
attachment = subpass.resolveAttachments[j].attachment,
layout = subpass.resolveAttachments[j].layout
};
}
subpasses[i].pResolveAttachments = (IntPtr)(&resolveAttachments[resolveIndex]);
resolveIndex += subpass.resolveAttachments.Count;
}
if (subpass.depthStencilAttachment != null)
{
depthAttachments[depthIndex] = new VkAttachmentReference {
attachment = subpass.depthStencilAttachment.attachment,
layout = subpass.depthStencilAttachment.layout
};
subpasses[i].pDepthStencilAttachment = (IntPtr)(&depthAttachments[depthIndex]);
depthIndex += 1;
}
if (subpass.preserveAttachments != null)
{
for (int j = 0; j < subpass.preserveAttachments.Count; j++)
{
preserveAttachments[j + preserveIndex] = subpass.preserveAttachments[j];
}
subpasses[i].preserveAttachmentCount = (uint)subpass.preserveAttachments.Count;
subpasses[i].pPreserveAttachments = (IntPtr)(&preserveAttachments[preserveIndex]);
preserveIndex += subpass.preserveAttachments.Count;
}
subpasses[i].pipelineBindPoint = subpass.pipelineBindPoint;
}
//marshal CreateInfo.dependencies
for (int i = 0; i < dependencyCount; i++)
{
dependencies[i].srcSubpass = mInfo.dependencies[i].srcSubpass;
dependencies[i].dstSubpass = mInfo.dependencies[i].dstSubpass;
dependencies[i].srcStageMask = mInfo.dependencies[i].srcStageMask;
dependencies[i].dstStageMask = mInfo.dependencies[i].dstStageMask;
dependencies[i].srcAccessMask = mInfo.dependencies[i].srcAccessMask;
dependencies[i].dependencyFlags = mInfo.dependencies[i].dependencyFlags;
}
//marshal CreateInfo
info.attachmentCount = (uint)attachmentCount;
info.pAttachments = (IntPtr)attachments;
info.subpassCount = (uint)subpassCount;
info.pSubpasses = (IntPtr)subpasses;
info.dependencyCount = (uint)dependencyCount;
info.pDependencies = (IntPtr)dependencies;
var result = Device.Commands.createRenderPass(Device.Native, ref info, Device.Instance.AllocationCallbacks, out renderPass);
if (result != VkResult.Success)
{
throw new RenderPassException(string.Format("Error creating render pass: {0}"));
}
GetGranularity();
}
}