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);
}
}
public DebugDrawPipeline(RenderPass renderPass, uint maxVertices = 100,
VkSampleCountFlags samples = VkSampleCountFlags.SampleCount1, PipelineCache pipelineCache = null) :
base(renderPass, pipelineCache, "Debug draw pipeline")
{
vboLength = maxVertices * 6 * sizeof(float);
using (GraphicPipelineConfig cfg = GraphicPipelineConfig.CreateDefault(VkPrimitiveTopology.LineList, samples, false)) {
cfg.rasterizationState.lineWidth = 1.0f;
cfg.RenderPass = RenderPass;
cfg.Layout = new PipelineLayout(Dev, new VkPushConstantRange(VkShaderStageFlags.Vertex, (uint)Marshal.SizeOf <Matrix4x4> () * 2));
cfg.AddVertexBinding(0, 6 * sizeof(float));
cfg.AddVertexAttributes(0, VkFormat.R32g32b32Sfloat, VkFormat.R32g32b32Sfloat);
cfg.blendAttachments[0] = new VkPipelineColorBlendAttachmentState(true);
cfg.AddShaders(
new ShaderInfo(Dev, VkShaderStageFlags.Vertex, "#vke.debug.vert.spv"),
new ShaderInfo(Dev, VkShaderStageFlags.Fragment, "#vke.debug.frag.spv")
);
layout = cfg.Layout;
init(cfg);
}
Vertices = new HostBuffer(Dev, VkBufferUsageFlags.VertexBuffer, vboLength);
Vertices.Map();
}
public FSQPipeline(RenderPass renderPass, PipelineLayout pipelineLayout, int attachment = 0, PipelineCache pipelineCache = null)
: base(renderPass, pipelineCache, "FSQ pipeline")
{
using (GraphicPipelineConfig cfg = GraphicPipelineConfig.CreateDefault(VkPrimitiveTopology.TriangleList, this.RenderPass.Samples, false)) {
cfg.RenderPass = RenderPass;
cfg.Layout = pipelineLayout;
cfg.AddShader(Dev, VkShaderStageFlags.Vertex, "#vke.FullScreenQuad.vert.spv");
cfg.AddShader(Dev, VkShaderStageFlags.Fragment, FragPath);
cfg.multisampleState.rasterizationSamples = Samples;
cfg.blendAttachments[attachment] = new VkPipelineColorBlendAttachmentState(true);
layout = cfg.Layout;
init(cfg);
}
}
/// <summary>
/// Create a default pipeline configuration with viewport and scissor as dynamic states. One blend attachment is
/// added automatically with blending disabled. (cfg.blendAttachments[0])
/// If width and height parameter are omitted viewport and scissor dynamic states are automatically added, else
/// a viewport and a vkrect2d are added to the viewport and scissor lists.
/// </summary>
public static GraphicPipelineConfig CreateDefault(VkPrimitiveTopology topology = VkPrimitiveTopology.TriangleList,
VkSampleCountFlags samples = VkSampleCountFlags.SampleCount1, bool depthTestEnabled = true, int width = -1, int height = -1)
{
GraphicPipelineConfig cfg = new GraphicPipelineConfig();
cfg.inputAssemblyState.topology = topology;
cfg.multisampleState.rasterizationSamples = samples;
cfg.rasterizationState.polygonMode = VkPolygonMode.Fill;
cfg.rasterizationState.cullMode = (uint)VkCullModeFlags.None;
cfg.rasterizationState.frontFace = VkFrontFace.CounterClockwise;
cfg.rasterizationState.depthClampEnable = False;
cfg.rasterizationState.rasterizerDiscardEnable = False;
cfg.rasterizationState.depthBiasEnable = False;
cfg.rasterizationState.lineWidth = 1.0f;
cfg.blendAttachments.Add(new VkPipelineColorBlendAttachmentState(false));
if (width < 0)
{
cfg.dynamicStates.Add(VkDynamicState.Viewport);
cfg.dynamicStates.Add(VkDynamicState.Scissor);
}
else
{
cfg.Viewports.Add(new VkViewport {
height = height, width = width, minDepth = 0f, maxDepth = 1f
});
cfg.Scissors.Add(new VkRect2D((uint)width, (uint)height));
}
if (depthTestEnabled)
{
cfg.depthStencilState.depthTestEnable = True;
cfg.depthStencilState.depthWriteEnable = True;
cfg.depthStencilState.depthCompareOp = VkCompareOp.LessOrEqual;
cfg.depthStencilState.depthBoundsTestEnable = False;
cfg.depthStencilState.back.failOp = VkStencilOp.Keep;
cfg.depthStencilState.back.passOp = VkStencilOp.Keep;
cfg.depthStencilState.back.compareOp = VkCompareOp.Always;
cfg.depthStencilState.stencilTestEnable = False;
cfg.depthStencilState.front = cfg.depthStencilState.back;
}
return(cfg);
}
void generateBRDFLUT(Queue staggingQ, CommandPool cmdPool)
{
const VkFormat format = VkFormat.R16g16Sfloat;
const int dim = 512;
lutBrdf = new Image(Dev, format, VkImageUsageFlags.ColorAttachment | VkImageUsageFlags.Sampled,
VkMemoryPropertyFlags.DeviceLocal, dim, dim);
lutBrdf.SetName("lutBrdf");
lutBrdf.CreateView();
lutBrdf.CreateSampler(VkSamplerAddressMode.ClampToEdge);
GraphicPipelineConfig cfg = GraphicPipelineConfig.CreateDefault(VkPrimitiveTopology.TriangleList, VkSampleCountFlags.SampleCount1, false);
cfg.Layout = new PipelineLayout(Dev, new DescriptorSetLayout(Dev));
cfg.RenderPass = new RenderPass(Dev);
cfg.RenderPass.AddAttachment(format, VkImageLayout.ShaderReadOnlyOptimal);
cfg.RenderPass.ClearValues.Add(new VkClearValue {
color = new VkClearColorValue(0, 0, 0)
});
cfg.RenderPass.AddSubpass(new SubPass(VkImageLayout.ColorAttachmentOptimal));
cfg.AddShader(VkShaderStageFlags.Vertex, "#deferred.genbrdflut.vert.spv");
cfg.AddShader(VkShaderStageFlags.Fragment, "#deferred.genbrdflut.frag.spv");
using (GraphicPipeline pl = new GraphicPipeline(cfg)) {
using (FrameBuffer fb = new FrameBuffer(cfg.RenderPass, dim, dim, lutBrdf)) {
CommandBuffer cmd = cmdPool.AllocateCommandBuffer();
cmd.Start(VkCommandBufferUsageFlags.OneTimeSubmit);
pl.RenderPass.Begin(cmd, fb);
cmd.SetViewport(dim, dim);
cmd.SetScissor(dim, dim);
pl.Bind(cmd);
cmd.Draw(3, 1, 0, 0);
pl.RenderPass.End(cmd);
cmd.End();
staggingQ.Submit(cmd);
staggingQ.WaitIdle();
cmd.Free();
}
}
lutBrdf.Descriptor.imageLayout = VkImageLayout.ShaderReadOnlyOptimal;
}
protected void init(GraphicPipelineConfig cfg)
{
if (state != ActivableState.Activated)
{
Layout.Activate();
RenderPass.Activate();
Cache?.Activate();
List <VkPipelineShaderStageCreateInfo> shaderStages = new List <VkPipelineShaderStageCreateInfo> ();
foreach (ShaderInfo shader in cfg.Shaders)
{
shaderStages.Add(shader.Info);
}
using (PinnedObjects pctx = new PinnedObjects()) {
VkPipelineColorBlendStateCreateInfo colorBlendInfo = VkPipelineColorBlendStateCreateInfo.New();
colorBlendInfo.logicOpEnable = cfg.ColorBlendLogicOpEnable;
colorBlendInfo.logicOp = cfg.ColorBlendLogicOp;
unsafe {
colorBlendInfo.blendConstants[0] = cfg.ColorBlendConstants.X;
colorBlendInfo.blendConstants[1] = cfg.ColorBlendConstants.Y;
colorBlendInfo.blendConstants[2] = cfg.ColorBlendConstants.Z;
colorBlendInfo.blendConstants[3] = cfg.ColorBlendConstants.W;
}
colorBlendInfo.attachmentCount = (uint)cfg.blendAttachments.Count;
colorBlendInfo.pAttachments = cfg.blendAttachments.Pin(pctx);
VkPipelineDynamicStateCreateInfo dynStatesInfo = VkPipelineDynamicStateCreateInfo.New();
dynStatesInfo.dynamicStateCount = (uint)cfg.dynamicStates.Count;
dynStatesInfo.pDynamicStates = cfg.dynamicStates.Cast <int> ().ToArray().Pin(pctx);
VkPipelineVertexInputStateCreateInfo vertInputInfo = VkPipelineVertexInputStateCreateInfo.New();
vertInputInfo.vertexBindingDescriptionCount = (uint)cfg.vertexBindings.Count;
vertInputInfo.pVertexBindingDescriptions = cfg.vertexBindings.Pin(pctx);
vertInputInfo.vertexAttributeDescriptionCount = (uint)cfg.vertexAttributes.Count;
vertInputInfo.pVertexAttributeDescriptions = cfg.vertexAttributes.Pin(pctx);
VkPipelineViewportStateCreateInfo viewportState = VkPipelineViewportStateCreateInfo.New();
if (cfg.Viewports.Count > 0)
{
viewportState.viewportCount = (uint)cfg.Viewports.Count;
viewportState.pViewports = cfg.Viewports.Pin(pctx);
}
else
{
viewportState.viewportCount = 1;
}
if (cfg.Scissors.Count > 0)
{
viewportState.scissorCount = (uint)cfg.Scissors.Count;
viewportState.pScissors = cfg.Scissors.Pin(pctx);
}
else
{
viewportState.scissorCount = 1;
}
VkGraphicsPipelineCreateInfo info = VkGraphicsPipelineCreateInfo.New();
info.renderPass = RenderPass.handle;
info.layout = Layout.handle;
info.pVertexInputState = vertInputInfo.Pin(pctx);
info.pInputAssemblyState = cfg.inputAssemblyState.Pin(pctx);
info.pRasterizationState = cfg.rasterizationState.Pin(pctx);
info.pColorBlendState = colorBlendInfo.Pin(pctx);
info.pMultisampleState = cfg.multisampleState.Pin(pctx);
info.pViewportState = viewportState.Pin(pctx);
info.pDepthStencilState = cfg.depthStencilState.Pin(pctx);
info.pDynamicState = dynStatesInfo.Pin(pctx);
info.stageCount = (uint)cfg.Shaders.Count;
info.pStages = shaderStages.Pin(pctx);
info.subpass = cfg.SubpassIndex;
Utils.CheckResult(vkCreateGraphicsPipelines(Dev.VkDev, Cache == null ? VkPipelineCache.Null : Cache.handle, 1, ref info, IntPtr.Zero, out handle));
}
}
base.Activate();
}
/// <summary>
/// Create a new Pipeline with supplied configuration
/// </summary>
public GraphicPipeline(GraphicPipelineConfig cfg, string name = "graphic pipeline") : this(cfg.RenderPass, cfg.Cache, name)
{
layout = cfg.Layout;
init(cfg);
}
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);
}
