public DescriptorSet(DescriptorPool descriptorPool, params DescriptorSetLayout[] layouts)
: this(descriptorPool) {
foreach (DescriptorSetLayout layout in layouts)
{
descriptorSetLayouts.Add(layout.handle);
}
}
public DescriptorSet(DescriptorPool descriptorPool)
{
pool = descriptorPool;
}
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, numMips);
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, "shaders/filtercube.vert.spv");
if (target == CBTarget.PREFILTEREDENV)
{
cfg.AddShader(VkShaderStageFlags.Fragment, "shaders/prefilterenvmap.frag.spv");
}
else
{
cfg.AddShader(VkShaderStageFlags.Fragment, "shaders/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);
}
void loadMaterials(glTFLoader ctx, DescriptorSetLayout layout, params AttachmentType[] attachments)
{
Model.Material[] mats = ctx.LoadMaterial();
materials = new Material[mats.Length];
descriptorSets = new DescriptorSet[mats.Length];
if (attachments.Length == 0)
{
throw new InvalidOperationException("At least one attachment is required for Model.WriteMaterialDescriptor");
}
descriptorPool = new DescriptorPool(dev, (uint)materials.Length,
new VkDescriptorPoolSize(VkDescriptorType.CombinedImageSampler, (uint)(attachments.Length * materials.Length))
);
descriptorPool.SetName("descPool gltfTextures");
for (int i = 0; i < mats.Length; i++)
{
materials[i] = new Material {
workflow = (float)mats[i].workflow,
baseColorFactor = mats[i].baseColorFactor,
emissiveFactor = mats[i].emissiveFactor,
metallicFactor = mats[i].metallicFactor,
roughnessFactor = mats[i].roughnessFactor,
TexCoord0 = mats[i].availableAttachments,
TexCoord1 = mats[i].availableAttachments1,
alphaMask = 0f,
alphaMaskCutoff = 0.0f,
diffuseFactor = new Vector4(0),
specularFactor = new Vector4(0)
};
descriptorSets[i] = descriptorPool.Allocate(layout);
descriptorSets[i].Handle.SetDebugMarkerName(dev, "descSet " + mats[i].Name);
VkDescriptorSetLayoutBinding dslb =
new VkDescriptorSetLayoutBinding(0, VkShaderStageFlags.Fragment, VkDescriptorType.CombinedImageSampler);
using (DescriptorSetWrites2 uboUpdate = new DescriptorSetWrites2(dev)) {
for (uint a = 0; a < attachments.Length; a++)
{
dslb.binding = a;
switch (attachments[a])
{
case AttachmentType.None:
break;
case AttachmentType.Color:
if (mats[i].availableAttachments.HasFlag(AttachmentType.Color))
{
uboUpdate.AddWriteInfo(descriptorSets[i], dslb, textures[(int)mats[i].baseColorTexture].Descriptor);
}
break;
case AttachmentType.Normal:
if (mats[i].availableAttachments.HasFlag(AttachmentType.Normal))
{
uboUpdate.AddWriteInfo(descriptorSets[i], dslb, textures[(int)mats[i].normalTexture].Descriptor);
}
break;
case AttachmentType.AmbientOcclusion:
if (mats[i].availableAttachments.HasFlag(AttachmentType.AmbientOcclusion))
{
uboUpdate.AddWriteInfo(descriptorSets[i], dslb, textures[(int)mats[i].occlusionTexture].Descriptor);
}
break;
case AttachmentType.PhysicalProps:
if (mats[i].availableAttachments.HasFlag(AttachmentType.PhysicalProps))
{
uboUpdate.AddWriteInfo(descriptorSets[i], dslb, textures[(int)mats[i].metallicRoughnessTexture].Descriptor);
}
break;
case AttachmentType.Metal:
break;
case AttachmentType.Roughness:
break;
case AttachmentType.Emissive:
if (mats[i].availableAttachments.HasFlag(AttachmentType.Emissive))
{
uboUpdate.AddWriteInfo(descriptorSets[i], dslb, textures[(int)mats[i].emissiveTexture].Descriptor);
}
break;
}
}
uboUpdate.Update();
}
}
}
public PBRPipeline(Queue staggingQ, RenderPass renderPass, Image uiImage, PipelineCache pipelineCache = null) :
base(renderPass, pipelineCache, "pbr pipeline")
{
descriptorPool = new DescriptorPool(Dev, 2,
new VkDescriptorPoolSize(VkDescriptorType.UniformBuffer, 2),
new VkDescriptorPoolSize(VkDescriptorType.CombinedImageSampler, 9)
);
descLayoutMain = new DescriptorSetLayout(Dev,
new VkDescriptorSetLayoutBinding(0, VkShaderStageFlags.Vertex | VkShaderStageFlags.Fragment, VkDescriptorType.UniformBuffer),
new VkDescriptorSetLayoutBinding(1, VkShaderStageFlags.Fragment, VkDescriptorType.CombinedImageSampler),
new VkDescriptorSetLayoutBinding(2, VkShaderStageFlags.Fragment, VkDescriptorType.CombinedImageSampler),
new VkDescriptorSetLayoutBinding(3, VkShaderStageFlags.Fragment, VkDescriptorType.CombinedImageSampler),
new VkDescriptorSetLayoutBinding(4, VkShaderStageFlags.Fragment, VkDescriptorType.UniformBuffer),
new VkDescriptorSetLayoutBinding(5, VkShaderStageFlags.Fragment, VkDescriptorType.CombinedImageSampler));//ui image
descLayoutTextures = new DescriptorSetLayout(Dev,
new VkDescriptorSetLayoutBinding(0, VkShaderStageFlags.Fragment, VkDescriptorType.CombinedImageSampler),
new VkDescriptorSetLayoutBinding(1, VkShaderStageFlags.Fragment, VkDescriptorType.CombinedImageSampler),
new VkDescriptorSetLayoutBinding(2, VkShaderStageFlags.Fragment, VkDescriptorType.CombinedImageSampler),
new VkDescriptorSetLayoutBinding(3, VkShaderStageFlags.Fragment, VkDescriptorType.CombinedImageSampler),
new VkDescriptorSetLayoutBinding(4, VkShaderStageFlags.Fragment, VkDescriptorType.CombinedImageSampler)
);
GraphicPipelineConfig cfg = GraphicPipelineConfig.CreateDefault(VkPrimitiveTopology.TriangleList, renderPass.Samples);
cfg.Layout = new PipelineLayout(Dev, descLayoutMain, descLayoutTextures);
cfg.Layout.AddPushConstants(
new VkPushConstantRange(VkShaderStageFlags.Vertex, (uint)Marshal.SizeOf <Matrix4x4> ()),
new VkPushConstantRange(VkShaderStageFlags.Fragment, sizeof(int), 64)
);
cfg.RenderPass = renderPass;
cfg.AddVertexBinding <PbrModel2.Vertex> (0);
cfg.AddVertexAttributes(0, VkFormat.R32g32b32Sfloat, VkFormat.R32g32b32Sfloat, VkFormat.R32g32Sfloat, VkFormat.R32g32Sfloat);
cfg.AddShader(VkShaderStageFlags.Vertex, "shaders/pbr.vert.spv");
cfg.AddShader(VkShaderStageFlags.Fragment, "shaders/pbr_khr.frag.spv");
layout = cfg.Layout;
init(cfg);
dsMain = descriptorPool.Allocate(descLayoutMain);
envCube = new EnvironmentCube(dsMain, layout, staggingQ, RenderPass);
matrices.prefilteredCubeMipLevels = envCube.prefilterCube.CreateInfo.mipLevels;
uboMats = new HostBuffer(Dev, VkBufferUsageFlags.UniformBuffer, matrices, true);
string[] modelPathes =
{
"data/models/DamagedHelmet/glTF/DamagedHelmet.gltf",
"/mnt/devel/vulkan/glTF-Sample-Models-master/2.0/Avocado/glTF/Avocado.gltf",
"/mnt/devel/vulkan/glTF-Sample-Models-master/2.0/BarramundiFish/glTF/BarramundiFish.gltf",
"/mnt/devel/vulkan/glTF-Sample-Models-master/2.0/BoomBoxWithAxes/glTF/BoomBoxWithAxes.gltf",
"/mnt/devel/vulkan/glTF-Sample-Models-master/2.0/Box/glTF/Box.gltf",
"/mnt/devel/vulkan/glTF-Sample-Models-master/2.0/EnvironmentTest/glTF/EnvironmentTest.gltf",
"/mnt/devel/vulkan/glTF-Sample-Models-master/2.0/MetalRoughSpheres/glTF/MetalRoughSpheres.gltf",
"/mnt/devel/vulkan/glTF-Sample-Models-master/2.0/OrientationTest/glTF/OrientationTest.gltf",
"/mnt/devel/vulkan/glTF-Sample-Models-master/2.0/Buggy/glTF/Buggy.gltf",
"/mnt/devel/vulkan/glTF-Sample-Models-master/2.0/2CylinderEngine/glTF-Embedded/2CylinderEngine.gltf",
"/mnt/devel/vulkan/glTF-Sample-Models-master/2.0/FlightHelmet/glTF/FlightHelmet.gltf",
"/mnt/devel/vulkan/glTF-Sample-Models-master/2.0/GearboxAssy/glTF/GearboxAssy.gltf",
"/mnt/devel/vulkan/glTF-Sample-Models-master/2.0/Lantern/glTF/Lantern.gltf",
"/mnt/devel/vulkan/glTF-Sample-Models-master/2.0/SciFiHelmet/glTF/SciFiHelmet.gltf",
"/mnt/devel/vulkan/glTF-Sample-Models-master/2.0/Sponza/glTF/Sponza.gltf",
"/mnt/devel/vkChess/data/chess.gltf"
};
model = new PbrModel2(staggingQ, modelPathes[0], descLayoutTextures,
AttachmentType.Color,
AttachmentType.PhysicalProps,
AttachmentType.Normal,
AttachmentType.AmbientOcclusion,
AttachmentType.Emissive);
//model = new Model (Dev, presentQueue, "../data/models/icosphere.gltf");
//model = new Model (Dev, presentQueue, cmdPool, "../data/models/cube.gltf");
DescriptorSetWrites uboUpdate = new DescriptorSetWrites(descLayoutMain);
uboUpdate.Write(Dev, dsMain,
uboMats.Descriptor,
envCube.irradianceCube.Descriptor,
envCube.prefilterCube.Descriptor,
envCube.lutBrdf.Descriptor,
model.materialUBO.Descriptor,
uiImage.Descriptor);
}
