/// <summary>
/// Adds write info with a destination descriptor set, it could be overriden by calling Write
/// with another descriptorSet in parametters
/// </summary>
public void AddWriteInfo(DescriptorSet destSet, params VkDescriptorSetLayoutBinding[] bindings)
{
foreach (VkDescriptorSetLayoutBinding binding in bindings)
{
AddWriteInfo(destSet, binding);
}
}
public EnvironmentCube(string cubemapPath, DescriptorSet dsSkybox, PipelineLayout plLayout, Queue staggingQ, RenderPass renderPass, PipelineCache cache = null)
: base(renderPass, cache, "EnvCube pipeline")
{
using (CommandPool cmdPool = new CommandPool(staggingQ.Dev, staggingQ.index)) {
vboSkybox = new GPUBuffer <float> (staggingQ, cmdPool, VkBufferUsageFlags.VertexBuffer, box_vertices);
cubemap = KTX.KTX.Load(staggingQ, cmdPool, cubemapPath,
VkImageUsageFlags.Sampled, VkMemoryPropertyFlags.DeviceLocal, true);
cubemap.CreateView(VkImageViewType.Cube, VkImageAspectFlags.Color);
cubemap.CreateSampler(VkSamplerAddressMode.ClampToEdge);
cubemap.SetName("skybox Texture");
cubemap.Descriptor.imageLayout = VkImageLayout.ShaderReadOnlyOptimal;
GraphicPipelineConfig cfg = GraphicPipelineConfig.CreateDefault(VkPrimitiveTopology.TriangleList, renderPass.Samples, false);
cfg.RenderPass = renderPass;
cfg.Layout = plLayout;
cfg.AddVertexBinding(0, 3 * sizeof(float));
cfg.AddVertexAttributes(0, VkFormat.R32g32b32Sfloat);
cfg.AddShader(VkShaderStageFlags.Vertex, "#deferred.skybox.vert.spv");
cfg.AddShader(VkShaderStageFlags.Fragment, "#deferred.skybox.frag.spv");
cfg.multisampleState.rasterizationSamples = Samples;
layout = cfg.Layout;
init(cfg);
generateBRDFLUT(staggingQ, cmdPool);
generateCubemaps(staggingQ, cmdPool);
}
}
/// <summary>
/// Allocate a new DescriptorSet from this pool.
/// </summary>
/// <returns>A managed descriptor set.</returns>
/// <param name="layouts">a variable sized array of descriptor layout(s) to allocate the descriptor for.</param>
public DescriptorSet Allocate(params DescriptorSetLayout[] layouts)
{
DescriptorSet ds = new DescriptorSet(this, layouts);
Allocate(ds);
return(ds);
}
/// <summary>
/// Configure the Write to update the full layout at once
/// </summary>
public DescriptorSetWrites(DescriptorSet destSet, DescriptorSetLayout layout)
{
foreach (VkDescriptorSetLayoutBinding binding in layout.Bindings)
{
AddWriteInfo(destSet, binding);
}
}
/// <summary>
/// Adds write info with a destination descriptor set, it could be overriden by calling Write
/// with another descriptorSet in parametters
/// </summary>
public void AddWriteInfo(DescriptorSet destSet, VkDescriptorSetLayoutBinding binding)
{
VkWriteDescriptorSet wds = VkWriteDescriptorSet.New();
wds.descriptorType = binding.descriptorType;
wds.descriptorCount = binding.descriptorCount;
wds.dstBinding = binding.binding;
wds.dstSet = destSet.handle;
WriteDescriptorSets.Add(wds);
}
public void Allocate(DescriptorSet descriptorSet)
{
VkDescriptorSetAllocateInfo allocInfo = VkDescriptorSetAllocateInfo.New();
allocInfo.descriptorPool = handle;
allocInfo.descriptorSetCount = (uint)descriptorSet.descriptorSetLayouts.Count;
allocInfo.pSetLayouts = descriptorSet.descriptorSetLayouts.Pin();
Utils.CheckResult(vkAllocateDescriptorSets(Dev.VkDev, ref allocInfo, out descriptorSet.handle));
descriptorSet.descriptorSetLayouts.Unpin();
}
public void AddWriteInfo(DescriptorSet destSet, VkDescriptorSetLayoutBinding binding, VkDescriptorImageInfo descriptor)
{
if (!descriptors.Contains(descriptor))
{
descriptors.Add(descriptor);
}
VkWriteDescriptorSet wds = VkWriteDescriptorSet.New();
wds.descriptorType = binding.descriptorType;
wds.descriptorCount = binding.descriptorCount;
wds.dstBinding = binding.binding;
wds.dstSet = destSet.handle;
wds.pImageInfo = descriptor.Pin();
WriteDescriptorSets.Add(wds);
}
protected override void initVulkan()
{
base.initVulkan();
iFace = new Interface((int)Width, (int)Height, WindowHandle);
iFace.Init();
CreateRenderPass();
fsqPl = new FSQPipeline(renderPass,
new PipelineLayout(dev, new DescriptorSetLayout(dev, dslBinding)));
cmdPoolCrow = new CommandPool(presentQueue, VkCommandPoolCreateFlags.ResetCommandBuffer);
cmdUpdateCrow = cmdPoolCrow.AllocateCommandBuffer();
dsPool = new DescriptorPool(dev, 1, new VkDescriptorPoolSize(VkDescriptorType.CombinedImageSampler));
descSet = dsPool.Allocate(fsqPl.Layout.DescriptorSetLayouts[0]);
Thread ui = new Thread(crowThread);
ui.IsBackground = true;
ui.Start();
}
public override void BindDescriptorSet(CommandBuffer cmd, DescriptorSet dset, uint firstSet = 0)
{
cmd.BindDescriptorSet(VkPipelineBindPoint.Graphics, layout, dset, firstSet);
}
public void BindDescriptorSet(VkPipelineBindPoint bindPoint, PipelineLayout pipelineLayout, DescriptorSet descriptorSet, uint firstSet = 0)
{
vkCmdBindDescriptorSets(handle, bindPoint, pipelineLayout.handle, firstSet, 1, ref descriptorSet.handle, 0, IntPtr.Zero);
}
/// <summary>
/// bind pipeline and descriptor set with default pipeline layout
/// </summary>
/// <param name="pl">pipeline to bind</param>
/// <param name="ds">descriptor set</param>
/// <param name="firstset">first set to bind</param>
public void BindPipeline(Pipeline pl, DescriptorSet ds, uint firstset = 0)
{
pl.Bind(this);
pl.BindDescriptorSet(this, ds, firstset);
}
public Image generateCubeMap(Queue staggingQ, CommandPool cmdPool, CBTarget target)
{
const float deltaPhi = (2.0f * (float)Math.PI) / 180.0f;
const float deltaTheta = (0.5f * (float)Math.PI) / 64.0f;
VkFormat format = VkFormat.R32g32b32a32Sfloat;
uint dim = 64;
if (target == CBTarget.PREFILTEREDENV)
{
format = VkFormat.R16g16b16a16Sfloat;
dim = 512;
}
uint numMips = (uint)Math.Floor(Math.Log(dim, 2)) + 1;
Image imgFbOffscreen = new Image(Dev, format, VkImageUsageFlags.TransferSrc | VkImageUsageFlags.ColorAttachment,
VkMemoryPropertyFlags.DeviceLocal, dim, dim);
imgFbOffscreen.SetName("offscreenfb");
imgFbOffscreen.CreateView();
Image cmap = new Image(Dev, format, VkImageUsageFlags.TransferDst | VkImageUsageFlags.Sampled,
VkMemoryPropertyFlags.DeviceLocal, dim, dim, VkImageType.Image2D, VkSampleCountFlags.SampleCount1, VkImageTiling.Optimal,
numMips, 6, 1, VkImageCreateFlags.CubeCompatible);
if (target == CBTarget.PREFILTEREDENV)
{
cmap.SetName("prefilterenvmap");
}
else
{
cmap.SetName("irradianceCube");
}
cmap.CreateView(VkImageViewType.Cube, VkImageAspectFlags.Color, 6, 0);
cmap.CreateSampler(VkSamplerAddressMode.ClampToEdge);
DescriptorPool dsPool = new DescriptorPool(Dev, 2, new VkDescriptorPoolSize(VkDescriptorType.CombinedImageSampler));
DescriptorSetLayout dsLayout = new DescriptorSetLayout(Dev,
new VkDescriptorSetLayoutBinding(0, VkShaderStageFlags.Fragment, VkDescriptorType.CombinedImageSampler));
GraphicPipelineConfig cfg = GraphicPipelineConfig.CreateDefault(VkPrimitiveTopology.TriangleList, VkSampleCountFlags.SampleCount1, false);
cfg.Layout = new PipelineLayout(Dev, dsLayout);
cfg.Layout.AddPushConstants(
new VkPushConstantRange(VkShaderStageFlags.Vertex | VkShaderStageFlags.Fragment, (uint)Marshal.SizeOf <Matrix4x4> () + 8));
cfg.RenderPass = new RenderPass(Dev);
cfg.RenderPass.AddAttachment(format, VkImageLayout.ColorAttachmentOptimal);
cfg.RenderPass.ClearValues.Add(new VkClearValue {
color = new VkClearColorValue(0, 0, 0)
});
cfg.RenderPass.AddSubpass(new SubPass(VkImageLayout.ColorAttachmentOptimal));
cfg.AddVertexBinding(0, 3 * sizeof(float));
cfg.AddVertexAttributes(0, VkFormat.R32g32b32Sfloat);
cfg.AddShader(VkShaderStageFlags.Vertex, "#deferred.filtercube.vert.spv");
if (target == CBTarget.PREFILTEREDENV)
{
cfg.AddShader(VkShaderStageFlags.Fragment, "#deferred.prefilterenvmap.frag.spv");
}
else
{
cfg.AddShader(VkShaderStageFlags.Fragment, "#deferred.irradiancecube.frag.spv");
}
Matrix4x4[] matrices =
{
// POSITIVE_X
Matrix4x4.CreateRotationX(Utils.DegreesToRadians(180)) * Matrix4x4.CreateRotationY(Utils.DegreesToRadians(90)),
// NEGATIVE_X
Matrix4x4.CreateRotationX(Utils.DegreesToRadians(180)) * Matrix4x4.CreateRotationY(Utils.DegreesToRadians(-90)),
// POSITIVE_Y
Matrix4x4.CreateRotationX(Utils.DegreesToRadians(-90)),
// NEGATIVE_Y
Matrix4x4.CreateRotationX(Utils.DegreesToRadians(90)),
// POSITIVE_Z
Matrix4x4.CreateRotationX(Utils.DegreesToRadians(180)),
// NEGATIVE_Z
Matrix4x4.CreateRotationZ(Utils.DegreesToRadians(180))
};
VkImageSubresourceRange subRes = new VkImageSubresourceRange(VkImageAspectFlags.Color, 0, numMips, 0, 6);
using (GraphicPipeline pl = new GraphicPipeline(cfg)) {
DescriptorSet dset = dsPool.Allocate(dsLayout);
DescriptorSetWrites dsUpdate = new DescriptorSetWrites(dsLayout);
dsUpdate.Write(Dev, dset, cubemap.Descriptor);
Dev.WaitIdle();
using (FrameBuffer fb = new FrameBuffer(pl.RenderPass, dim, dim, imgFbOffscreen)) {
CommandBuffer cmd = cmdPool.AllocateCommandBuffer();
cmd.Start(VkCommandBufferUsageFlags.OneTimeSubmit);
cmap.SetLayout(cmd, VkImageLayout.Undefined, VkImageLayout.TransferDstOptimal, subRes);
float roughness = 0;
cmd.SetScissor(dim, dim);
cmd.SetViewport((float)(dim), (float)dim);
for (int m = 0; m < numMips; m++)
{
roughness = (float)m / ((float)numMips - 1f);
for (int f = 0; f < 6; f++)
{
pl.RenderPass.Begin(cmd, fb);
pl.Bind(cmd);
float viewPortSize = (float)Math.Pow(0.5, m) * dim;
cmd.SetViewport(viewPortSize, viewPortSize);
cmd.PushConstant(pl.Layout, VkShaderStageFlags.Vertex | VkShaderStageFlags.Fragment,
matrices[f] * Matrix4x4.CreatePerspectiveFieldOfView(Utils.DegreesToRadians(90), 1f, 0.1f, 512f));
if (target == CBTarget.IRRADIANCE)
{
cmd.PushConstant(pl.Layout, VkShaderStageFlags.Vertex | VkShaderStageFlags.Fragment, deltaPhi, (uint)Marshal.SizeOf <Matrix4x4> ());
cmd.PushConstant(pl.Layout, VkShaderStageFlags.Vertex | VkShaderStageFlags.Fragment, deltaTheta, (uint)Marshal.SizeOf <Matrix4x4> () + 4);
}
else
{
cmd.PushConstant(pl.Layout, VkShaderStageFlags.Vertex | VkShaderStageFlags.Fragment, roughness, (uint)Marshal.SizeOf <Matrix4x4> ());
cmd.PushConstant(pl.Layout, VkShaderStageFlags.Vertex | VkShaderStageFlags.Fragment, 64u, (uint)Marshal.SizeOf <Matrix4x4> () + 4);
}
cmd.BindDescriptorSet(pl.Layout, dset);
cmd.BindVertexBuffer(vboSkybox);
cmd.Draw(36);
pl.RenderPass.End(cmd);
imgFbOffscreen.SetLayout(cmd, VkImageAspectFlags.Color,
VkImageLayout.ColorAttachmentOptimal, VkImageLayout.TransferSrcOptimal);
VkImageCopy region = new VkImageCopy();
region.srcSubresource = new VkImageSubresourceLayers(VkImageAspectFlags.Color, 1);
region.dstSubresource = new VkImageSubresourceLayers(VkImageAspectFlags.Color, 1, (uint)m, (uint)f);
region.extent = new VkExtent3D {
width = (uint)viewPortSize, height = (uint)viewPortSize, depth = 1
};
Vk.vkCmdCopyImage(cmd.Handle,
imgFbOffscreen.Handle, VkImageLayout.TransferSrcOptimal,
cmap.Handle, VkImageLayout.TransferDstOptimal,
1, region.Pin());
region.Unpin();
imgFbOffscreen.SetLayout(cmd, VkImageAspectFlags.Color,
VkImageLayout.TransferSrcOptimal, VkImageLayout.ColorAttachmentOptimal);
}
}
cmap.SetLayout(cmd, VkImageLayout.TransferDstOptimal, VkImageLayout.ShaderReadOnlyOptimal, subRes);
cmd.End();
staggingQ.Submit(cmd);
staggingQ.WaitIdle();
cmd.Free();
}
}
cmap.Descriptor.imageLayout = VkImageLayout.ShaderReadOnlyOptimal;
dsLayout.Dispose();
imgFbOffscreen.Dispose();
dsPool.Dispose();
return(cmap);
}
/// <summary> /// /// </summary> /// <param name="cmd">Recording command buffer</param> /// <param name="dset"></param> /// <param name="firstSet">first descriptor set to bind</param> public abstract void BindDescriptorSet(CommandBuffer cmd, DescriptorSet dset, uint firstSet = 0);
public DescriptorSetWrites(DescriptorSet destSet, params VkDescriptorSetLayoutBinding[] bindings)
{
AddWriteInfo(destSet, bindings);
}
public DescriptorSetWrites(DescriptorSet destSet, VkDescriptorSetLayoutBinding binding)
{
AddWriteInfo(destSet, binding);
}
/// <summary>
/// execute the descriptors writes providing a target descriptorSet
/// </summary>
public void Write(Device dev, DescriptorSet set, params object[] descriptors)
{
dstSetOverride = set.handle;
Write(dev, descriptors);
}