protected virtual void CreateRenderPass()
{
if (renderPassCreator != null)
{
RenderPass = renderPassCreator.Invoke();
}
else if (!renderTextureInfos.Empty())
{
var attachmentDescriptions = new VkAttachmentDescription[renderTextureInfos.Count];
var subpassDescriptions = new SubpassDescription[subpasses.Count];
var dependencies = new VkSubpassDependency[subpasses.Count + 1];
for (int i = 0; i < renderTextureInfos.Count; i++)
{
attachmentDescriptions[i] = renderTextureInfos[i].attachmentDescription;
}
dependencies[0] = new VkSubpassDependency
{
srcSubpass = Vulkan.SubpassExternal,
dstSubpass = 0,
srcStageMask = VkPipelineStageFlags.BottomOfPipe,
dstStageMask = VkPipelineStageFlags.ColorAttachmentOutput,
srcAccessMask = VkAccessFlags.MemoryRead,
dstAccessMask = (VkAccessFlags.ColorAttachmentRead | VkAccessFlags.ColorAttachmentWrite),
dependencyFlags = VkDependencyFlags.ByRegion
};
for (int i = 0; i < subpasses.Count; i++)
{
subpasses[i].GetDescription(attachmentDescriptions, ref subpassDescriptions[i]);
if (i > 0)
{
//dependencies[i] = subpasses[i].Dependency;
dependencies[i].srcSubpass = (uint)(i - 1);
dependencies[i].dstSubpass = (uint)i;
dependencies[i].srcStageMask = VkPipelineStageFlags.ColorAttachmentOutput;
dependencies[i].dstStageMask = VkPipelineStageFlags.FragmentShader;
dependencies[i].srcAccessMask = VkAccessFlags.ColorAttachmentWrite;
dependencies[i].dstAccessMask = VkAccessFlags.InputAttachmentRead;
dependencies[i].dependencyFlags = VkDependencyFlags.ByRegion;
}
}
dependencies[subpasses.Count] = new VkSubpassDependency
{
srcSubpass = (uint)(subpasses.Count - 1),
dstSubpass = Vulkan.SubpassExternal,
srcStageMask = VkPipelineStageFlags.ColorAttachmentOutput,
dstStageMask = VkPipelineStageFlags.BottomOfPipe,
srcAccessMask = VkAccessFlags.ColorAttachmentRead | VkAccessFlags.ColorAttachmentWrite,
dstAccessMask = VkAccessFlags.MemoryRead,
dependencyFlags = VkDependencyFlags.ByRegion
};
RenderPass = new RenderPass(attachmentDescriptions, subpassDescriptions, dependencies);
}
if (RenderPass == null)
{
RenderPass = Graphics.RenderPass;
}
}
public void BeginRenderPass(ref RenderPassBeginInfo renderPassBeginInfo, VkSubpassContents contents)
{
vkCmdBeginRenderPass(commandBuffer, Utilities.AsPtr(ref renderPassBeginInfo.native), contents);
renderPass = renderPassBeginInfo.renderPass;
ClearDescriptorSets();
}
public RenderPass CreateRenderPass(bool clearColor = false, bool clearDepth = false)
{
VkAttachmentDescription[] attachments =
{
// Color attachment
new VkAttachmentDescription(ColorFormat)
{
loadOp = clearColor? VkAttachmentLoadOp.Clear : VkAttachmentLoadOp.DontCare, // AttachmentLoadOp.Load,
storeOp = VkAttachmentStoreOp.Store,
finalLayout = VkImageLayout.PresentSrcKHR
},
// Depth attachment
new VkAttachmentDescription(DepthFormat)
{
loadOp = clearDepth? VkAttachmentLoadOp.Clear: VkAttachmentLoadOp.DontCare,
storeOp = VkAttachmentStoreOp.DontCare,
finalLayout = VkImageLayout.DepthStencilAttachmentOptimal
}
};
SubpassDescription[] subpassDescription =
{
new SubpassDescription
{
pipelineBindPoint = VkPipelineBindPoint.Graphics,
pColorAttachments = new []
{
new VkAttachmentReference(0, VkImageLayout.ColorAttachmentOptimal)
},
pDepthStencilAttachment = new []
{
new VkAttachmentReference(1, VkImageLayout.DepthStencilAttachmentOptimal)
},
}
};
// Subpass dependencies for layout transitions
VkSubpassDependency[] dependencies =
{
new VkSubpassDependency
{
srcSubpass = Vulkan.SubpassExternal,
dstSubpass = 0,
srcStageMask = VkPipelineStageFlags.BottomOfPipe,
dstStageMask = VkPipelineStageFlags.ColorAttachmentOutput,
srcAccessMask = VkAccessFlags.MemoryRead,
dstAccessMask = (VkAccessFlags.ColorAttachmentRead | VkAccessFlags.ColorAttachmentWrite),
dependencyFlags = VkDependencyFlags.ByRegion
},
new VkSubpassDependency
{
srcSubpass = 0,
dstSubpass = Vulkan.SubpassExternal,
srcStageMask = VkPipelineStageFlags.ColorAttachmentOutput,
dstStageMask = VkPipelineStageFlags.BottomOfPipe,
srcAccessMask = (VkAccessFlags.ColorAttachmentRead | VkAccessFlags.ColorAttachmentWrite),
dstAccessMask = VkAccessFlags.MemoryRead,
dependencyFlags = VkDependencyFlags.ByRegion
},
};
renderPass = new RenderPass(attachments, subpassDescription, dependencies);
return(renderPass);
}