void init_final_pl()
{
descriptorPool = new DescriptorPool(dev, 3,
new VkDescriptorPoolSize(VkDescriptorType.CombinedImageSampler, 2),
new VkDescriptorPoolSize(VkDescriptorType.StorageImage, 4)
);
GraphicPipelineConfig cfg = GraphicPipelineConfig.CreateDefault(VkPrimitiveTopology.TriangleList, DeferredPbrRenderer.NUM_SAMPLES);
if (DeferredPbrRenderer.NUM_SAMPLES != VkSampleCountFlags.SampleCount1)
{
cfg.multisampleState.sampleShadingEnable = true;
cfg.multisampleState.minSampleShading = 0.5f;
}
cfg.Layout = new PipelineLayout(dev,
new VkPushConstantRange(VkShaderStageFlags.Fragment, 2 * sizeof(float)),
new DescriptorSetLayout(dev, 0,
new VkDescriptorSetLayoutBinding(0, VkShaderStageFlags.Fragment, VkDescriptorType.CombinedImageSampler)
));
cfg.RenderPass = new RenderPass(dev, swapChain.ColorFormat, DeferredPbrRenderer.NUM_SAMPLES);
cfg.AddShaders(new ShaderInfo(dev, VkShaderStageFlags.Vertex, "#vke.FullScreenQuad.vert.spv"));
cfg.AddShaders(new ShaderInfo(dev, VkShaderStageFlags.Fragment, "#shaders.tone_mapping.frag.spv"));
plToneMap = new GraphicPipeline(cfg);
cfg.DisposeShaders();
descriptorSet = descriptorPool.Allocate(cfg.Layout.DescriptorSetLayouts[0]);
}
public EnvironmentCube(string cubemapPath, PipelineLayout plLayout, Queue staggingQ, RenderPass renderPass, PipelineCache cache = null)
: base(renderPass, cache, "EnvCube pipeline")
{
using (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.AddShaders(
new ShaderInfo(Dev, VkShaderStageFlags.Vertex, "#EnvironmentPipeline.skybox.vert.spv"),
new ShaderInfo(Dev, VkShaderStageFlags.Fragment, STR_FRAG_PATH)
);
cfg.multisampleState.rasterizationSamples = Samples;
layout = cfg.Layout;
init(cfg);
}
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;
generateBRDFLUT(staggingQ, cmdPool);
generateCubemaps(staggingQ, cmdPool);
}
}
protected override void initVulkan()
{
base.initVulkan();
//first create the needed buffers
vbo = new HostBuffer <Vertex> (dev, VkBufferUsageFlags.VertexBuffer, vertices);
ibo = new HostBuffer <ushort> (dev, VkBufferUsageFlags.IndexBuffer, indices);
//because mvp matrice may be updated by mouse move, we keep it mapped after creation.
uboMats = new HostBuffer(dev, VkBufferUsageFlags.UniformBuffer, mvp, true);
//a descriptor pool to allocate the mvp matrice descriptor from.
descriptorPool = new DescriptorPool(dev, 1, new VkDescriptorPoolSize(VkDescriptorType.UniformBuffer));
//Graphic pipeline configuration are predefined by the GraphicPipelineConfig class, which ease sharing config for several pipelines having lots in common.
using (GraphicPipelineConfig cfg = GraphicPipelineConfig.CreateDefault(VkPrimitiveTopology.TriangleList, VkSampleCountFlags.SampleCount1, false)) {
//Create the pipeline layout, it will be automatically activated on pipeline creation, so that sharing layout among different pipelines will benefit
//from the reference counting to automatically dispose unused layout on pipeline clean up. It's the same for DescriptorSetLayout.
cfg.Layout = new PipelineLayout(dev,
new DescriptorSetLayout(dev, new VkDescriptorSetLayoutBinding(0, VkShaderStageFlags.Vertex, VkDescriptorType.UniformBuffer)));
//create a default renderpass with just a color attachment for the swapchain image, a default subpass is automatically created and the renderpass activation
//will follow the pipeline life cicle and will be automatically disposed when no longuer used.
cfg.RenderPass = new RenderPass(dev, swapChain.ColorFormat, cfg.Samples);
//configuration of vertex bindings and attributes
cfg.AddVertexBinding <Vertex> (0);
cfg.AddVertexAttributes(0, VkFormat.R32g32b32Sfloat, VkFormat.R32g32b32Sfloat); //position + color
//shader are automatically compiled by SpirVTasks if added to the project. The resulting shaders are automatically embedded in the assembly.
//To specifiy that the shader path is a resource name, put the '#' prefix. Else the path will be search on disk.
cfg.AddShaders(
new ShaderInfo(dev, VkShaderStageFlags.Vertex, "#shaders.main.vert.spv"),
new ShaderInfo(dev, VkShaderStageFlags.Fragment, "#shaders.main.frag.spv")
);
//create and activate the pipeline with the configuration we've just done.
pipeline = new GraphicPipeline(cfg);
}
//because descriptor layout used for a pipeline are only activated on pipeline activation, descriptor set must not be allocated before, except if the layout has been manually activated,
//but in this case, layout will need also to be explicitly disposed.
descriptorSet = descriptorPool.Allocate(pipeline.Layout.DescriptorSetLayouts[0]);
//Write the content of the descriptor, the mvp matrice.
DescriptorSetWrites uboUpdate = new DescriptorSetWrites(descriptorSet, pipeline.Layout.DescriptorSetLayouts[0]);
//Descriptor property of the mvp buffer will return a default descriptor with no offset of the full size of the buffer.
uboUpdate.Write(dev, uboMats.Descriptor);
//allocate the default VkWindow buffers, one per swapchain image. Their will be only reset when rebuilding and not reallocated.
cmds = cmdPool.AllocateCommandBuffer(swapChain.ImageCount);
}
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, dim, dim);
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.AddShaders(
new ShaderInfo(Dev, VkShaderStageFlags.Vertex, "#EnvironmentPipeline.genbrdflut.vert.spv"),
new ShaderInfo(Dev, VkShaderStageFlags.Fragment, "#EnvironmentPipeline.genbrdflut.frag.spv"));
using (GraphicPipeline pl = new GraphicPipeline(cfg)) {
cfg.Dispose();
using (FrameBuffer fb = new FrameBuffer(cfg.RenderPass, dim, dim, lutBrdf)) {
PrimaryCommandBuffer cmd = cmdPool.AllocateCommandBuffer();
cmd.Start(VkCommandBufferUsageFlags.OneTimeSubmit);
pl.RenderPass.Begin(cmd, fb);
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;
}
void init(float nearPlane, float farPlane)
{
init_renderpass();
descLayoutMain = new DescriptorSetLayout(dev,
new VkDescriptorSetLayoutBinding(0, VkShaderStageFlags.Vertex | VkShaderStageFlags.Fragment, VkDescriptorType.UniformBuffer),//matrices and params
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), //lights
new VkDescriptorSetLayoutBinding(5, VkShaderStageFlags.Fragment, VkDescriptorType.UniformBuffer)); //materials
#if WITH_SHADOWS
descLayoutMain.Bindings.Add(new VkDescriptorSetLayoutBinding(6, VkShaderStageFlags.Fragment, VkDescriptorType.CombinedImageSampler));
#endif
if (TEXTURE_ARRAY)
{
descLayoutMain.Bindings.Add(new VkDescriptorSetLayoutBinding(7, VkShaderStageFlags.Fragment, VkDescriptorType.CombinedImageSampler)); //texture array
//descLayoutMain.Bindings.Add (new VkDescriptorSetLayoutBinding (8, VkShaderStageFlags.Fragment, VkDescriptorType.CombinedImageSampler));//down sampled hdr
}
else
{
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)
);
}
descLayoutGBuff = new DescriptorSetLayout(dev,
new VkDescriptorSetLayoutBinding(0, VkShaderStageFlags.Fragment, VkDescriptorType.InputAttachment), //color + roughness
new VkDescriptorSetLayoutBinding(1, VkShaderStageFlags.Fragment, VkDescriptorType.InputAttachment), //emit + metal
new VkDescriptorSetLayoutBinding(2, VkShaderStageFlags.Fragment, VkDescriptorType.InputAttachment), //normals + AO
new VkDescriptorSetLayoutBinding(3, VkShaderStageFlags.Fragment, VkDescriptorType.InputAttachment)); //Pos + depth
GraphicPipelineConfig cfg = GraphicPipelineConfig.CreateDefault(VkPrimitiveTopology.TriangleList, NUM_SAMPLES);
cfg.rasterizationState.cullMode = VkCullModeFlags.Back;
if (NUM_SAMPLES != VkSampleCountFlags.SampleCount1)
{
cfg.multisampleState.sampleShadingEnable = true;
cfg.multisampleState.minSampleShading = 0.5f;
}
cfg.Cache = pipelineCache;
if (TEXTURE_ARRAY)
{
cfg.Layout = new PipelineLayout(dev, descLayoutMain, descLayoutGBuff);
}
else
{
cfg.Layout = new PipelineLayout(dev, descLayoutMain, descLayoutGBuff, descLayoutTextures);
}
cfg.Layout.AddPushConstants(
new VkPushConstantRange(VkShaderStageFlags.Vertex, (uint)Marshal.SizeOf <Matrix4x4> ()),
new VkPushConstantRange(VkShaderStageFlags.Fragment, sizeof(int), 64)
);
cfg.RenderPass = renderPass;
cfg.SubpassIndex = SP_MODELS;
cfg.blendAttachments.Add(new VkPipelineColorBlendAttachmentState(false));
cfg.blendAttachments.Add(new VkPipelineColorBlendAttachmentState(false));
cfg.blendAttachments.Add(new VkPipelineColorBlendAttachmentState(false));
//cfg.blendAttachments.Add (new VkPipelineColorBlendAttachmentState (false));
cfg.AddVertex <PbrModelTexArray.Vertex> ();
using (SpecializationInfo constants = new SpecializationInfo(
new SpecializationConstant <float> (0, nearPlane),
new SpecializationConstant <float> (1, farPlane),
new SpecializationConstant <float> (2, MAX_MATERIAL_COUNT))) {
cfg.AddShaders(new ShaderInfo(dev, VkShaderStageFlags.Vertex, "#shaders.GBuffPbr.vert.spv"));
if (TEXTURE_ARRAY)
{
cfg.AddShaders(new ShaderInfo(dev, VkShaderStageFlags.Fragment, "#shaders.GBuffPbrTexArray.frag.spv", constants));
}
else
{
cfg.AddShaders(new ShaderInfo(dev, VkShaderStageFlags.Fragment, "#shaders.GBuffPbr.frag.spv", constants));
}
gBuffPipeline = new GraphicPipeline(cfg);
}
cfg.rasterizationState.cullMode = VkCullModeFlags.Front;
//COMPOSE PIPELINE
cfg.blendAttachments.Clear();
cfg.blendAttachments.Add(new VkPipelineColorBlendAttachmentState(false));
cfg.ResetShadersAndVerticesInfos();
cfg.SubpassIndex = SP_COMPOSE;
cfg.Layout = gBuffPipeline.Layout;
cfg.depthStencilState.depthTestEnable = false;
cfg.depthStencilState.depthWriteEnable = false;
using (SpecializationInfo constants = new SpecializationInfo(
new SpecializationConstant <uint> (0, (uint)lights.Length))) {
cfg.AddShaders(new ShaderInfo(dev, VkShaderStageFlags.Vertex, "#vke.FullScreenQuad.vert.spv"));
#if WITH_SHADOWS
cfg.AddShaders(new ShaderInfo(dev, VkShaderStageFlags.Fragment, "#shaders.compose_with_shadows.frag.spv", constants));
#else
cfg.AddShader(VkShaderStageFlags.Fragment, "#shaders.compose.frag.spv", constants);
#endif
composePipeline = new GraphicPipeline(cfg);
}
cfg.Shaders[1].Dispose();
//DEBUG DRAW use subpass of compose
cfg.Shaders[1] = new ShaderInfo(dev, VkShaderStageFlags.Fragment, "#shaders.show_gbuff.frag.spv");
cfg.SubpassIndex = SP_COMPOSE;
debugPipeline = new GraphicPipeline(cfg);
cfg.DisposeShaders();
////TONE MAPPING
//cfg.shaders[1] = new ShaderInfo (VkShaderStageFlags.Fragment, "#shaders.tone_mapping.frag.spv");
//cfg.SubpassIndex = SP_TONE_MAPPING;
//toneMappingPipeline = new GraphicPipeline (cfg);
dsMain = descriptorPool.Allocate(descLayoutMain);
dsGBuff = descriptorPool.Allocate(descLayoutGBuff);
envCube = new EnvironmentCube(cubemapPath, gBuffPipeline.Layout, gQueue, renderPass);
matrices.prefilteredCubeMipLevels = envCube.prefilterCube.CreateInfo.mipLevels;
DescriptorSetWrites dsMainWrite = new DescriptorSetWrites(dsMain, descLayoutMain.Bindings.GetRange(0, 5).ToArray());
dsMainWrite.Write(dev,
uboMatrices.Descriptor,
envCube.irradianceCube.Descriptor,
envCube.prefilterCube.Descriptor,
envCube.lutBrdf.Descriptor,
uboLights.Descriptor);
#if WITH_SHADOWS
dsMainWrite = new DescriptorSetWrites(dsMain, descLayoutMain.Bindings[6]);
dsMainWrite.Write(dev, shadowMapRenderer.shadowMap.Descriptor);
#endif
}
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.AddShaders(new ShaderInfo(Dev, VkShaderStageFlags.Vertex, "#EnvironmentPipeline.filtercube.vert.spv"));
if (target == CBTarget.PREFILTEREDENV)
{
cfg.AddShaders(new ShaderInfo(Dev, VkShaderStageFlags.Fragment, "#EnvironmentPipeline.prefilterenvmap.frag.spv"));
}
else
{
cfg.AddShaders(new ShaderInfo(Dev, VkShaderStageFlags.Fragment, "#EnvironmentPipeline.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)) {
cfg.Dispose();
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)) {
PrimaryCommandBuffer 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 init()
{
//Shadow map renderpass
shadowPass = new RenderPass(dev, VkSampleCountFlags.SampleCount1);
shadowPass.AddAttachment(SHADOWMAP_FORMAT, VkImageLayout.DepthStencilReadOnlyOptimal, SHADOWMAP_NUM_SAMPLES);
shadowPass.ClearValues.Add(new VkClearValue {
depthStencil = new VkClearDepthStencilValue(1.0f, 0)
});
SubPass subpass0 = new SubPass();
subpass0.SetDepthReference(0);
shadowPass.AddSubpass(subpass0);
shadowPass.AddDependency(Vk.SubpassExternal, 0,
VkPipelineStageFlags.FragmentShader, VkPipelineStageFlags.EarlyFragmentTests,
VkAccessFlags.ShaderRead, VkAccessFlags.DepthStencilAttachmentWrite);
shadowPass.AddDependency(0, Vk.SubpassExternal,
VkPipelineStageFlags.LateFragmentTests, VkPipelineStageFlags.FragmentShader,
VkAccessFlags.DepthStencilAttachmentWrite, VkAccessFlags.ShaderRead);
descLayoutShadow = new DescriptorSetLayout(dev,
new VkDescriptorSetLayoutBinding(0, VkShaderStageFlags.Geometry, VkDescriptorType.UniformBuffer), //matrices
new VkDescriptorSetLayoutBinding(1, VkShaderStageFlags.Geometry, VkDescriptorType.UniformBuffer)); //lights
GraphicPipelineConfig cfg = GraphicPipelineConfig.CreateDefault(VkPrimitiveTopology.TriangleList);
cfg.rasterizationState.cullMode = VkCullModeFlags.Back;
cfg.rasterizationState.depthBiasEnable = true;
cfg.dynamicStates.Add(VkDynamicState.DepthBias);
cfg.RenderPass = shadowPass;
cfg.Layout = new PipelineLayout(dev, descLayoutShadow);
cfg.Layout.AddPushConstants(
new VkPushConstantRange(VkShaderStageFlags.Vertex, (uint)Marshal.SizeOf <Matrix4x4> ())
);
cfg.AddVertexBinding <PbrModelTexArray.Vertex> (0);
cfg.AddVertexAttributes(0, VkFormat.R32g32b32Sfloat);
cfg.AddShaders(new ShaderInfo(dev, VkShaderStageFlags.Vertex, "#shaders.shadow.vert.spv"));
cfg.AddShaders(new ShaderInfo(dev, VkShaderStageFlags.Geometry, "#shaders.shadow.geom.spv"));
shadowPipeline = new GraphicPipeline(cfg);
cfg.DisposeShaders();
//shadow map image
shadowMap = new Image(dev, SHADOWMAP_FORMAT, VkImageUsageFlags.DepthStencilAttachment | VkImageUsageFlags.Sampled, VkMemoryPropertyFlags.DeviceLocal, SHADOWMAP_SIZE, SHADOWMAP_SIZE,
VkImageType.Image2D, SHADOWMAP_NUM_SAMPLES, VkImageTiling.Optimal, 1, (uint)renderer.lights.Length);
shadowMap.CreateView(VkImageViewType.ImageView2DArray, VkImageAspectFlags.Depth, shadowMap.CreateInfo.arrayLayers);
shadowMap.CreateSampler(VkSamplerAddressMode.ClampToBorder);
shadowMap.Descriptor.imageLayout = VkImageLayout.DepthStencilReadOnlyOptimal;
fbShadowMap = new FrameBuffer(shadowPass, SHADOWMAP_SIZE, SHADOWMAP_SIZE, (uint)renderer.lights.Length);
fbShadowMap.attachments.Add(shadowMap);
fbShadowMap.Activate();
dsShadow = descriptorPool.Allocate(descLayoutShadow);
DescriptorSetWrites dsWrite = new DescriptorSetWrites(dsShadow, descLayoutShadow);
dsWrite.Write(dev, renderer.uboMatrices.Descriptor, renderer.uboLights.Descriptor);
}