From 328c11f4dfd2653f9b6d12633b38d7baa49958da Mon Sep 17 00:00:00 2001 From: Jean-Philippe Bruyère Date: Wed, 17 Oct 2018 18:49:56 +0200 Subject: first commit, splitted from vkChess --- src/pbrrenderer2.cpp | 1054 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1054 insertions(+) create mode 100644 src/pbrrenderer2.cpp (limited to 'src/pbrrenderer2.cpp') diff --git a/src/pbrrenderer2.cpp b/src/pbrrenderer2.cpp new file mode 100644 index 0000000..2161c75 --- /dev/null +++ b/src/pbrrenderer2.cpp @@ -0,0 +1,1054 @@ +#include "pbrrenderer2.h" + +pbrRenderer::pbrRenderer () : vkRenderer() +{ +} + +pbrRenderer::~pbrRenderer() { + if (prepared) + destroy(); +} + +void pbrRenderer::destroy() { + prepared = false; + + vkDestroyPipeline(device->dev, pipelines.skybox, nullptr); + vkDestroyPipeline(device->dev, pipelines.pbr, nullptr); + vkDestroyPipeline(device->dev, pipelines.pbrAlphaBlend, nullptr); + + for (uint i=0; iaddDescriptorSetLayout( + {//scene + { 0, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1, VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },//matrices + { 1, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },//params + { 2, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },//irradiance + { 3, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },//prefiltered cube + { 4, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },//lutBrdf + }); + shadingCtx->addDescriptorSetLayout( + {//meshes + { 0, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },//texture sampler + { 1, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },//material ubo + }); + shadingCtx->addDescriptorSetLayout( + {//meshes + { 0, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr },//vkvg texture + }); + + + shadingCtx->prepare(); + +} +void pbrRenderer::loadRessources() { + textures.environmentCube.loadFromFile("data/textures/papermill_hdr16f_cube.ktx", VK_FORMAT_R16G16B16A16_SFLOAT, device ); + skybox.loadFromFile("data/models/Box/glTF-Embedded/Box.gltf", device); + + generateBRDFLUT(); + generateCubemaps(); +} +void pbrRenderer::freeRessources() { + skybox.destroy(); + + textures.environmentCube.destroy(); + textures.irradianceCube.destroy(); + textures.prefilteredCube.destroy(); + textures.lutBrdf.destroy(); +} +void pbrRenderer::prepareDescriptors() +{ + dsScene = shadingCtx->allocateDescriptorSet(0); + + shadingCtx->updateDescriptorSet (dsScene, + { + {0,0,&sharedUBOs.matrices}, + {0,1,&sharedUBOs.params}, + {0,2,&textures.irradianceCube}, + {0,3,&textures.prefilteredCube}, + {0,4,&textures.lutBrdf} + }); + + descriptorSet = shadingCtx->allocateDescriptorSet (2); + shadingCtx->updateDescriptorSet (descriptorSet, + { + {2,0,&fullScreenTex}, + }); +} +void pbrRenderer::preparePipeline() { + VkPipelineInputAssemblyStateCreateInfo inputAssemblyStateCI = {VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO}; + inputAssemblyStateCI.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST; + + VkPipelineRasterizationStateCreateInfo rasterizationStateCI = {VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO}; + rasterizationStateCI.polygonMode = VK_POLYGON_MODE_FILL; + rasterizationStateCI.cullMode = VK_CULL_MODE_BACK_BIT; + rasterizationStateCI.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE; + rasterizationStateCI.lineWidth = 1.0f; + + VkPipelineColorBlendAttachmentState blendAttachmentState{}; + blendAttachmentState.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT; + blendAttachmentState.blendEnable = VK_FALSE; + + VkPipelineColorBlendStateCreateInfo colorBlendStateCI = {VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO}; + colorBlendStateCI.attachmentCount = 1; + colorBlendStateCI.pAttachments = &blendAttachmentState; + + VkPipelineDepthStencilStateCreateInfo depthStencilStateCI = {VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO}; + depthStencilStateCI.depthTestEnable = VK_FALSE; + depthStencilStateCI.depthWriteEnable = VK_FALSE; + depthStencilStateCI.depthCompareOp = VK_COMPARE_OP_LESS_OR_EQUAL; + depthStencilStateCI.front = depthStencilStateCI.back; + depthStencilStateCI.back.compareOp = VK_COMPARE_OP_ALWAYS; + + VkPipelineViewportStateCreateInfo viewportStateCI = {VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO}; + viewportStateCI.viewportCount = 1; + viewportStateCI.scissorCount = 1; + + VkPipelineMultisampleStateCreateInfo multisampleStateCI = {VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO}; + + if (renderTarget->samples > VK_SAMPLE_COUNT_1_BIT) + multisampleStateCI.rasterizationSamples = renderTarget->samples; + + std::vector dynamicStateEnables = { + VK_DYNAMIC_STATE_VIEWPORT, + VK_DYNAMIC_STATE_SCISSOR + }; + VkPipelineDynamicStateCreateInfo dynamicStateCI = {VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO}; + dynamicStateCI.pDynamicStates = dynamicStateEnables.data(); + dynamicStateCI.dynamicStateCount = static_cast(dynamicStateEnables.size()); + + // Pipeline layout + + VkPipelineLayoutCreateInfo pipelineLayoutCI = {VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO}; + pipelineLayoutCI.setLayoutCount = shadingCtx->layouts.size(); + pipelineLayoutCI.pSetLayouts = shadingCtx->layouts.data(); + VK_CHECK_RESULT(vkCreatePipelineLayout(device->dev, &pipelineLayoutCI, nullptr, &pipelineLayout)); + + // Vertex bindings an attributes + std::vector vertexInputBinding = { + {0, sizeof(vkglTF::Model::Vertex), VK_VERTEX_INPUT_RATE_VERTEX}, + {1, sizeof(vkglTF::InstanceData), VK_VERTEX_INPUT_RATE_INSTANCE}, + }; + std::vector vertexInputAttributes = { + { 0, 0, VK_FORMAT_R32G32B32_SFLOAT, 0 }, + { 1, 0, VK_FORMAT_R32G32B32_SFLOAT, sizeof(float) * 3 }, + { 2, 0, VK_FORMAT_R32G32_SFLOAT, sizeof(float) * 6 }, + //instance + { 3, 1, VK_FORMAT_R32_UINT, 0 }, //material index + { 4, 1, VK_FORMAT_R32G32B32A32_SFLOAT, 4}, //model matrix + { 5, 1, VK_FORMAT_R32G32B32A32_SFLOAT, 20}, + { 6, 1, VK_FORMAT_R32G32B32A32_SFLOAT, 36}, + { 7, 1, VK_FORMAT_R32G32B32A32_SFLOAT, 52}, + { 8, 1, VK_FORMAT_R32G32B32A32_SFLOAT, 68}, //color for selection + }; + VkPipelineVertexInputStateCreateInfo vertexInputStateCI = {VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO}; + vertexInputStateCI.vertexBindingDescriptionCount = 2; + vertexInputStateCI.pVertexBindingDescriptions = vertexInputBinding.data(); + vertexInputStateCI.vertexAttributeDescriptionCount = static_cast(vertexInputAttributes.size()); + vertexInputStateCI.pVertexAttributeDescriptions = vertexInputAttributes.data(); + + // Pipelines + std::array shaderStages; + + VkGraphicsPipelineCreateInfo pipelineCI = {VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO}; + pipelineCI.layout = pipelineLayout; + pipelineCI.renderPass = renderTarget->renderPass; + pipelineCI.pInputAssemblyState = &inputAssemblyStateCI; + pipelineCI.pVertexInputState = &vertexInputStateCI; + pipelineCI.pRasterizationState = &rasterizationStateCI; + pipelineCI.pColorBlendState = &colorBlendStateCI; + pipelineCI.pMultisampleState = &multisampleStateCI; + pipelineCI.pViewportState = &viewportStateCI; + pipelineCI.pDepthStencilState = &depthStencilStateCI; + pipelineCI.pDynamicState = &dynamicStateCI; + pipelineCI.stageCount = static_cast(shaderStages.size()); + pipelineCI.pStages = shaderStages.data(); + + // Skybox pipeline (background cube) + rasterizationStateCI.cullMode = VK_CULL_MODE_FRONT_BIT; + vertexInputStateCI.vertexBindingDescriptionCount = 1; + vertexInputStateCI.vertexAttributeDescriptionCount = 3; + + shaderStages = { + loadShader(device->dev, "skybox.vert.spv", VK_SHADER_STAGE_VERTEX_BIT), + loadShader(device->dev, "skybox.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT) + }; + VK_CHECK_RESULT(vkCreateGraphicsPipelines(device->dev, device->pipelineCache, 1, &pipelineCI, nullptr, &pipelines.skybox)); + + for (auto shaderStage : shaderStages) + vkDestroyShaderModule(device->dev, shaderStage.module, nullptr); + + // PBR pipeline + rasterizationStateCI.cullMode = VK_CULL_MODE_BACK_BIT; + vertexInputStateCI.vertexBindingDescriptionCount = 2; + vertexInputStateCI.vertexAttributeDescriptionCount = static_cast(vertexInputAttributes.size()); + depthStencilStateCI.depthWriteEnable = VK_TRUE; + depthStencilStateCI.depthTestEnable = VK_TRUE; + + shaderStages = { + loadShader(device->dev, "pbr.vert.spv", VK_SHADER_STAGE_VERTEX_BIT), + loadShader(device->dev, "pbr.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT) + }; + VK_CHECK_RESULT(vkCreateGraphicsPipelines(device->dev, device->pipelineCache, 1, &pipelineCI, nullptr, &pipelines.pbr)); + + depthStencilStateCI.depthWriteEnable = VK_FALSE; + depthStencilStateCI.depthTestEnable = VK_FALSE; + + rasterizationStateCI.cullMode = VK_CULL_MODE_NONE; + blendAttachmentState.blendEnable = VK_TRUE; + blendAttachmentState.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT; + blendAttachmentState.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA; + blendAttachmentState.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA; + blendAttachmentState.colorBlendOp = VK_BLEND_OP_ADD; + blendAttachmentState.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA; + blendAttachmentState.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO; + blendAttachmentState.alphaBlendOp = VK_BLEND_OP_ADD; + VK_CHECK_RESULT(vkCreateGraphicsPipelines(device->dev, device->pipelineCache, 1, &pipelineCI, nullptr, &pipelines.pbrAlphaBlend)); + + for (auto shaderStage : shaderStages) + vkDestroyShaderModule(device->dev, shaderStage.module, nullptr); + + //create full screen quad pipeline to render vkvg texture + rasterizationStateCI.cullMode = VK_CULL_MODE_FRONT_BIT; + rasterizationStateCI.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE; + vertexInputStateCI.vertexBindingDescriptionCount = 0; + vertexInputStateCI.vertexAttributeDescriptionCount = 0; + vertexInputStateCI.pVertexBindingDescriptions = nullptr; + vertexInputStateCI.pVertexAttributeDescriptions = nullptr; + + shaderStages = { + loadShader(device->dev, "FullScreenQuad.vert.spv", VK_SHADER_STAGE_VERTEX_BIT), + loadShader(device->dev, "simpletexture.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT) + }; + VK_CHECK_RESULT(vkCreateGraphicsPipelines(device->dev, device->pipelineCache, 1, &pipelineCI, nullptr, &pipeline)); + + for (auto shaderStage : shaderStages) + vkDestroyShaderModule(device->dev, shaderStage.module, nullptr); +} + +void pbrRenderer::draw(VkCommandBuffer cmdBuff) { + vkCmdBindDescriptorSets(cmdBuff, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &dsScene, 0, NULL); + + vkCmdBindPipeline(cmdBuff, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.skybox); + + skybox.buildCommandBuffer (cmdBuff, pipelineLayout); + + // Opaque primitives + vkCmdBindPipeline(cmdBuff, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.pbr); + models[0].buildCommandBuffer (cmdBuff, pipelineLayout); + + //full screen quad + fullScreenTex.setImageLayout(cmdBuff, VK_IMAGE_ASPECT_COLOR_BIT, + VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, + VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT); + + vkCmdBindDescriptorSets(cmdBuff, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 2, 1, &descriptorSet, 0, NULL); + vkCmdBindPipeline(cmdBuff, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline); + + vkCmdDraw(cmdBuff, 3, 1, 0, 0); + + fullScreenTex.setImageLayout(cmdBuff, VK_IMAGE_ASPECT_COLOR_BIT, + VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL, + VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT); +} + +void pbrRenderer::generateBRDFLUT() +{ + auto tStart = std::chrono::high_resolution_clock::now(); + + const VkFormat format = VK_FORMAT_R16G16_SFLOAT; + const int32_t dim = 512; + + // Image + VkImageCreateInfo imageCI{}; + imageCI.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO; + imageCI.imageType = VK_IMAGE_TYPE_2D; + imageCI.format = format; + imageCI.extent.width = dim; + imageCI.extent.height = dim; + imageCI.extent.depth = 1; + imageCI.mipLevels = 1; + imageCI.arrayLayers = 1; + imageCI.samples = VK_SAMPLE_COUNT_1_BIT; + imageCI.tiling = VK_IMAGE_TILING_OPTIMAL; + imageCI.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT; + VK_CHECK_RESULT(vkCreateImage(device->dev, &imageCI, nullptr, &textures.lutBrdf.image)); + VkMemoryRequirements memReqs; + vkGetImageMemoryRequirements(device->dev, textures.lutBrdf.image, &memReqs); + VkMemoryAllocateInfo memAllocInfo{}; + memAllocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO; + memAllocInfo.allocationSize = memReqs.size; + memAllocInfo.memoryTypeIndex = device->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT); + VK_CHECK_RESULT(vkAllocateMemory(device->dev, &memAllocInfo, nullptr, &textures.lutBrdf.deviceMemory)); + VK_CHECK_RESULT(vkBindImageMemory(device->dev, textures.lutBrdf.image, textures.lutBrdf.deviceMemory, 0)); + + // View + VkImageViewCreateInfo viewCI{}; + viewCI.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO; + viewCI.viewType = VK_IMAGE_VIEW_TYPE_2D; + viewCI.format = format; + viewCI.subresourceRange = {}; + viewCI.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + viewCI.subresourceRange.levelCount = 1; + viewCI.subresourceRange.layerCount = 1; + viewCI.image = textures.lutBrdf.image; + VK_CHECK_RESULT(vkCreateImageView(device->dev, &viewCI, nullptr, &textures.lutBrdf.view)); + + // Sampler + VkSamplerCreateInfo samplerCI{}; + samplerCI.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO; + samplerCI.magFilter = VK_FILTER_LINEAR; + samplerCI.minFilter = VK_FILTER_LINEAR; + samplerCI.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR; + samplerCI.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; + samplerCI.addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; + samplerCI.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; + samplerCI.minLod = 0.0f; + samplerCI.maxLod = 1.0f; + samplerCI.maxAnisotropy = 1.0f; + samplerCI.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE; + VK_CHECK_RESULT(vkCreateSampler(device->dev, &samplerCI, nullptr, &textures.lutBrdf.sampler)); + + // FB, Att, RP, Pipe, etc. + VkAttachmentDescription attDesc{}; + // Color attachment + attDesc.format = format; + attDesc.samples = VK_SAMPLE_COUNT_1_BIT; + attDesc.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR; + attDesc.storeOp = VK_ATTACHMENT_STORE_OP_STORE; + attDesc.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE; + attDesc.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE; + attDesc.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; + attDesc.finalLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; + VkAttachmentReference colorReference = { 0, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL }; + + VkSubpassDescription subpassDescription{}; + subpassDescription.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS; + subpassDescription.colorAttachmentCount = 1; + subpassDescription.pColorAttachments = &colorReference; + + // Use subpass dependencies for layout transitions + std::array dependencies; + dependencies[0].srcSubpass = VK_SUBPASS_EXTERNAL; + dependencies[0].dstSubpass = 0; + dependencies[0].srcStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT; + dependencies[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; + dependencies[0].srcAccessMask = VK_ACCESS_MEMORY_READ_BIT; + dependencies[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; + dependencies[0].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT; + dependencies[1].srcSubpass = 0; + dependencies[1].dstSubpass = VK_SUBPASS_EXTERNAL; + dependencies[1].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; + dependencies[1].dstStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT; + dependencies[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; + dependencies[1].dstAccessMask = VK_ACCESS_MEMORY_READ_BIT; + dependencies[1].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT; + + // Create the actual renderpass + VkRenderPassCreateInfo renderPassCI{}; + renderPassCI.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO; + renderPassCI.attachmentCount = 1; + renderPassCI.pAttachments = &attDesc; + renderPassCI.subpassCount = 1; + renderPassCI.pSubpasses = &subpassDescription; + renderPassCI.dependencyCount = 2; + renderPassCI.pDependencies = dependencies.data(); + + VkRenderPass renderpass; + VK_CHECK_RESULT(vkCreateRenderPass(device->dev, &renderPassCI, nullptr, &renderpass)); + + VkFramebufferCreateInfo framebufferCI{}; + framebufferCI.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO; + framebufferCI.renderPass = renderpass; + framebufferCI.attachmentCount = 1; + framebufferCI.pAttachments = &textures.lutBrdf.view; + framebufferCI.width = dim; + framebufferCI.height = dim; + framebufferCI.layers = 1; + + VkFramebuffer framebuffer; + VK_CHECK_RESULT(vkCreateFramebuffer(device->dev, &framebufferCI, nullptr, &framebuffer)); + + // Desriptors + VkDescriptorSetLayout descriptorsetlayout; + VkDescriptorSetLayoutCreateInfo descriptorSetLayoutCI{}; + descriptorSetLayoutCI.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO; + VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device->dev, &descriptorSetLayoutCI, nullptr, &descriptorsetlayout)); + + // Pipeline layout + VkPipelineLayout pipelinelayout; + VkPipelineLayoutCreateInfo pipelineLayoutCI{}; + pipelineLayoutCI.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO; + pipelineLayoutCI.setLayoutCount = 1; + pipelineLayoutCI.pSetLayouts = &descriptorsetlayout; + VK_CHECK_RESULT(vkCreatePipelineLayout(device->dev, &pipelineLayoutCI, nullptr, &pipelinelayout)); + + // Pipeline + VkPipelineInputAssemblyStateCreateInfo inputAssemblyStateCI{}; + inputAssemblyStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO; + inputAssemblyStateCI.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST; + + VkPipelineRasterizationStateCreateInfo rasterizationStateCI{}; + rasterizationStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO; + rasterizationStateCI.polygonMode = VK_POLYGON_MODE_FILL; + rasterizationStateCI.cullMode = VK_CULL_MODE_NONE; + rasterizationStateCI.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE; + rasterizationStateCI.lineWidth = 1.0f; + + VkPipelineColorBlendAttachmentState blendAttachmentState{}; + blendAttachmentState.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT; + blendAttachmentState.blendEnable = VK_FALSE; + + VkPipelineColorBlendStateCreateInfo colorBlendStateCI{}; + colorBlendStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO; + colorBlendStateCI.attachmentCount = 1; + colorBlendStateCI.pAttachments = &blendAttachmentState; + + VkPipelineDepthStencilStateCreateInfo depthStencilStateCI{}; + depthStencilStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO; + depthStencilStateCI.depthTestEnable = VK_FALSE; + depthStencilStateCI.depthWriteEnable = VK_FALSE; + depthStencilStateCI.depthCompareOp = VK_COMPARE_OP_LESS_OR_EQUAL; + depthStencilStateCI.front = depthStencilStateCI.back; + depthStencilStateCI.back.compareOp = VK_COMPARE_OP_ALWAYS; + + VkPipelineViewportStateCreateInfo viewportStateCI{}; + viewportStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO; + viewportStateCI.viewportCount = 1; + viewportStateCI.scissorCount = 1; + + VkPipelineMultisampleStateCreateInfo multisampleStateCI{}; + multisampleStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO; + multisampleStateCI.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT; + + std::vector dynamicStateEnables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR }; + VkPipelineDynamicStateCreateInfo dynamicStateCI{}; + dynamicStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO; + dynamicStateCI.pDynamicStates = dynamicStateEnables.data(); + dynamicStateCI.dynamicStateCount = static_cast(dynamicStateEnables.size()); + + VkPipelineVertexInputStateCreateInfo emptyInputStateCI{}; + emptyInputStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO; + + std::array shaderStages; + + VkGraphicsPipelineCreateInfo pipelineCI{}; + pipelineCI.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO; + pipelineCI.layout = pipelinelayout; + pipelineCI.renderPass = renderpass; + pipelineCI.pInputAssemblyState = &inputAssemblyStateCI; + pipelineCI.pVertexInputState = &emptyInputStateCI; + pipelineCI.pRasterizationState = &rasterizationStateCI; + pipelineCI.pColorBlendState = &colorBlendStateCI; + pipelineCI.pMultisampleState = &multisampleStateCI; + pipelineCI.pViewportState = &viewportStateCI; + pipelineCI.pDepthStencilState = &depthStencilStateCI; + pipelineCI.pDynamicState = &dynamicStateCI; + pipelineCI.stageCount = 2; + pipelineCI.pStages = shaderStages.data(); + + // Look-up-table (from BRDF) pipeline + shaderStages = { + loadShader(device->dev, "genbrdflut.vert.spv", VK_SHADER_STAGE_VERTEX_BIT), + loadShader(device->dev, "genbrdflut.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT) + }; + VkPipeline pipeline; + VK_CHECK_RESULT(vkCreateGraphicsPipelines(device->dev, device->pipelineCache, 1, &pipelineCI, nullptr, &pipeline)); + for (auto shaderStage : shaderStages) { + vkDestroyShaderModule(device->dev, shaderStage.module, nullptr); + } + + // Render + VkClearValue clearValues[1]; + clearValues[0].color = { { 0.0f, 0.0f, 0.0f, 1.0f } }; + + VkRenderPassBeginInfo renderPassBeginInfo{}; + renderPassBeginInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO; + renderPassBeginInfo.renderPass = renderpass; + renderPassBeginInfo.renderArea.extent.width = dim; + renderPassBeginInfo.renderArea.extent.height = dim; + renderPassBeginInfo.clearValueCount = 1; + renderPassBeginInfo.pClearValues = clearValues; + renderPassBeginInfo.framebuffer = framebuffer; + + VkCommandBuffer cmdBuf = device->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true); + vkCmdBeginRenderPass(cmdBuf, &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE); + + VkViewport viewport{}; + viewport.width = (float)dim; + viewport.height = (float)dim; + viewport.minDepth = 0.0f; + viewport.maxDepth = 1.0f; + + VkRect2D scissor{}; + scissor.extent.width = renderTarget->width; + scissor.extent.height = renderTarget->height; + + vkCmdSetViewport(cmdBuf, 0, 1, &viewport); + vkCmdSetScissor(cmdBuf, 0, 1, &scissor); + vkCmdBindPipeline(cmdBuf, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline); + vkCmdDraw(cmdBuf, 3, 1, 0, 0); + vkCmdEndRenderPass(cmdBuf); + device->flushCommandBuffer(cmdBuf, device->queue); + + vkQueueWaitIdle(device->queue); + + vkDestroyPipeline(device->dev, pipeline, nullptr); + vkDestroyPipelineLayout(device->dev, pipelinelayout, nullptr); + vkDestroyRenderPass(device->dev, renderpass, nullptr); + vkDestroyFramebuffer(device->dev, framebuffer, nullptr); + vkDestroyDescriptorSetLayout(device->dev, descriptorsetlayout, nullptr); + + textures.lutBrdf.descriptor.imageView = textures.lutBrdf.view; + textures.lutBrdf.descriptor.sampler = textures.lutBrdf.sampler; + textures.lutBrdf.descriptor.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; + textures.lutBrdf.device = device; + + auto tEnd = std::chrono::high_resolution_clock::now(); + auto tDiff = std::chrono::duration(tEnd - tStart).count(); + std::cout << "Generating BRDF LUT took " << tDiff << " ms" << std::endl; +} +void pbrRenderer::generateCubemaps() +{ + enum Target { IRRADIANCE = 0, PREFILTEREDENV = 1 }; + + for (uint32_t target = 0; target < PREFILTEREDENV + 1; target++) { + + vks::TextureCubeMap cubemap; + + auto tStart = std::chrono::high_resolution_clock::now(); + + VkFormat format; + int32_t dim; + + switch (target) { + case IRRADIANCE: + format = VK_FORMAT_R32G32B32A32_SFLOAT; + dim = 64; + break; + case PREFILTEREDENV: + format = VK_FORMAT_R16G16B16A16_SFLOAT; + dim = 512; + break; + }; + + const uint32_t numMips = static_cast(floor(log2(dim))) + 1; + + // Create target cubemap + { + // Image + VkImageCreateInfo imageCI{}; + imageCI.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO; + imageCI.imageType = VK_IMAGE_TYPE_2D; + imageCI.format = format; + imageCI.extent.width = dim; + imageCI.extent.height = dim; + imageCI.extent.depth = 1; + imageCI.mipLevels = numMips; + imageCI.arrayLayers = 6; + imageCI.samples = VK_SAMPLE_COUNT_1_BIT; + imageCI.tiling = VK_IMAGE_TILING_OPTIMAL; + imageCI.usage = VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT; + imageCI.flags = VK_IMAGE_CREATE_CUBE_COMPATIBLE_BIT; + VK_CHECK_RESULT(vkCreateImage(device->dev, &imageCI, nullptr, &cubemap.image)); + VkMemoryRequirements memReqs; + vkGetImageMemoryRequirements(device->dev, cubemap.image, &memReqs); + VkMemoryAllocateInfo memAllocInfo{}; + memAllocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO; + memAllocInfo.allocationSize = memReqs.size; + memAllocInfo.memoryTypeIndex = device->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT); + VK_CHECK_RESULT(vkAllocateMemory(device->dev, &memAllocInfo, nullptr, &cubemap.deviceMemory)); + VK_CHECK_RESULT(vkBindImageMemory(device->dev, cubemap.image, cubemap.deviceMemory, 0)); + + // View + VkImageViewCreateInfo viewCI{}; + viewCI.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO; + viewCI.viewType = VK_IMAGE_VIEW_TYPE_CUBE; + viewCI.format = format; + viewCI.subresourceRange = {}; + viewCI.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + viewCI.subresourceRange.levelCount = numMips; + viewCI.subresourceRange.layerCount = 6; + viewCI.image = cubemap.image; + VK_CHECK_RESULT(vkCreateImageView(device->dev, &viewCI, nullptr, &cubemap.view)); + + // Sampler + VkSamplerCreateInfo samplerCI{}; + samplerCI.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO; + samplerCI.magFilter = VK_FILTER_LINEAR; + samplerCI.minFilter = VK_FILTER_LINEAR; + samplerCI.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR; + samplerCI.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; + samplerCI.addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; + samplerCI.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; + samplerCI.minLod = 0.0f; + samplerCI.maxLod = static_cast(numMips); + samplerCI.maxAnisotropy = 1.0f; + samplerCI.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE; + VK_CHECK_RESULT(vkCreateSampler(device->dev, &samplerCI, nullptr, &cubemap.sampler)); + } + + // FB, Att, RP, Pipe, etc. + VkAttachmentDescription attDesc{}; + // Color attachment + attDesc.format = format; + attDesc.samples = VK_SAMPLE_COUNT_1_BIT; + attDesc.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR; + attDesc.storeOp = VK_ATTACHMENT_STORE_OP_STORE; + attDesc.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE; + attDesc.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE; + attDesc.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; + attDesc.finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL; + VkAttachmentReference colorReference = { 0, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL }; + + VkSubpassDescription subpassDescription{}; + subpassDescription.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS; + subpassDescription.colorAttachmentCount = 1; + subpassDescription.pColorAttachments = &colorReference; + + // Use subpass dependencies for layout transitions + std::array dependencies; + dependencies[0].srcSubpass = VK_SUBPASS_EXTERNAL; + dependencies[0].dstSubpass = 0; + dependencies[0].srcStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT; + dependencies[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; + dependencies[0].srcAccessMask = VK_ACCESS_MEMORY_READ_BIT; + dependencies[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; + dependencies[0].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT; + dependencies[1].srcSubpass = 0; + dependencies[1].dstSubpass = VK_SUBPASS_EXTERNAL; + dependencies[1].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; + dependencies[1].dstStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT; + dependencies[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; + dependencies[1].dstAccessMask = VK_ACCESS_MEMORY_READ_BIT; + dependencies[1].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT; + + // Renderpass + VkRenderPassCreateInfo renderPassCI{}; + renderPassCI.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO; + renderPassCI.attachmentCount = 1; + renderPassCI.pAttachments = &attDesc; + renderPassCI.subpassCount = 1; + renderPassCI.pSubpasses = &subpassDescription; + renderPassCI.dependencyCount = 2; + renderPassCI.pDependencies = dependencies.data(); + VkRenderPass renderpass; + VK_CHECK_RESULT(vkCreateRenderPass(device->dev, &renderPassCI, nullptr, &renderpass)); + + struct Offscreen { + VkImage image; + VkImageView view; + VkDeviceMemory memory; + VkFramebuffer framebuffer; + } offscreen; + + // Create offscreen framebuffer + { + // Image + VkImageCreateInfo imageCI{}; + imageCI.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO; + imageCI.imageType = VK_IMAGE_TYPE_2D; + imageCI.format = format; + imageCI.extent.width = dim; + imageCI.extent.height = dim; + imageCI.extent.depth = 1; + imageCI.mipLevels = 1; + imageCI.arrayLayers = 1; + imageCI.samples = VK_SAMPLE_COUNT_1_BIT; + imageCI.tiling = VK_IMAGE_TILING_OPTIMAL; + imageCI.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; + imageCI.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT; + imageCI.sharingMode = VK_SHARING_MODE_EXCLUSIVE; + VK_CHECK_RESULT(vkCreateImage(device->dev, &imageCI, nullptr, &offscreen.image)); + VkMemoryRequirements memReqs; + vkGetImageMemoryRequirements(device->dev, offscreen.image, &memReqs); + VkMemoryAllocateInfo memAllocInfo{}; + memAllocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO; + memAllocInfo.allocationSize = memReqs.size; + memAllocInfo.memoryTypeIndex = device->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT); + VK_CHECK_RESULT(vkAllocateMemory(device->dev, &memAllocInfo, nullptr, &offscreen.memory)); + VK_CHECK_RESULT(vkBindImageMemory(device->dev, offscreen.image, offscreen.memory, 0)); + + // View + VkImageViewCreateInfo viewCI{}; + viewCI.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO; + viewCI.viewType = VK_IMAGE_VIEW_TYPE_2D; + viewCI.format = format; + viewCI.flags = 0; + viewCI.subresourceRange = {}; + viewCI.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + viewCI.subresourceRange.baseMipLevel = 0; + viewCI.subresourceRange.levelCount = 1; + viewCI.subresourceRange.baseArrayLayer = 0; + viewCI.subresourceRange.layerCount = 1; + viewCI.image = offscreen.image; + VK_CHECK_RESULT(vkCreateImageView(device->dev, &viewCI, nullptr, &offscreen.view)); + + // Framebuffer + VkFramebufferCreateInfo framebufferCI{}; + framebufferCI.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO; + framebufferCI.renderPass = renderpass; + framebufferCI.attachmentCount = 1; + framebufferCI.pAttachments = &offscreen.view; + framebufferCI.width = dim; + framebufferCI.height = dim; + framebufferCI.layers = 1; + VK_CHECK_RESULT(vkCreateFramebuffer(device->dev, &framebufferCI, nullptr, &offscreen.framebuffer)); + + VkCommandBuffer layoutCmd = device->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true); + VkImageMemoryBarrier imageMemoryBarrier{}; + imageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; + imageMemoryBarrier.image = offscreen.image; + imageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED; + imageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL; + imageMemoryBarrier.srcAccessMask = 0; + imageMemoryBarrier.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; + imageMemoryBarrier.subresourceRange = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 }; + vkCmdPipelineBarrier(layoutCmd, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, 0, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier); + device->flushCommandBuffer(layoutCmd, device->queue, true); + } + + // Descriptors + VkDescriptorSetLayout descriptorsetlayout; + VkDescriptorSetLayoutBinding setLayoutBinding = { 0, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr }; + VkDescriptorSetLayoutCreateInfo descriptorSetLayoutCI{}; + descriptorSetLayoutCI.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO; + descriptorSetLayoutCI.pBindings = &setLayoutBinding; + descriptorSetLayoutCI.bindingCount = 1; + VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device->dev, &descriptorSetLayoutCI, nullptr, &descriptorsetlayout)); + + // Descriptor Pool + VkDescriptorPoolSize poolSize = { VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1 }; + VkDescriptorPoolCreateInfo descriptorPoolCI{}; + descriptorPoolCI.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO; + descriptorPoolCI.poolSizeCount = 1; + descriptorPoolCI.pPoolSizes = &poolSize; + descriptorPoolCI.maxSets = 2; + VkDescriptorPool descriptorpool; + VK_CHECK_RESULT(vkCreateDescriptorPool(device->dev, &descriptorPoolCI, nullptr, &descriptorpool)); + + // Descriptor sets + VkDescriptorSet descriptorset; + VkDescriptorSetAllocateInfo descriptorSetAllocInfo{}; + descriptorSetAllocInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO; + descriptorSetAllocInfo.descriptorPool = descriptorpool; + descriptorSetAllocInfo.pSetLayouts = &descriptorsetlayout; + descriptorSetAllocInfo.descriptorSetCount = 1; + VK_CHECK_RESULT(vkAllocateDescriptorSets(device->dev, &descriptorSetAllocInfo, &descriptorset)); + VkWriteDescriptorSet writeDescriptorSet{}; + writeDescriptorSet.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; + writeDescriptorSet.descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER; + writeDescriptorSet.descriptorCount = 1; + writeDescriptorSet.dstSet = descriptorset; + writeDescriptorSet.dstBinding = 0; + writeDescriptorSet.pImageInfo = &textures.environmentCube.descriptor; + vkUpdateDescriptorSets(device->dev, 1, &writeDescriptorSet, 0, nullptr); + + struct PushBlockIrradiance { + glm::mat4 mvp; + float deltaPhi = (2.0f * float(M_PI)) / 180.0f; + float deltaTheta = (0.5f * float(M_PI)) / 64.0f; + } pushBlockIrradiance; + + struct PushBlockPrefilterEnv { + glm::mat4 mvp; + float roughness; + uint32_t numSamples = 32u; + } pushBlockPrefilterEnv; + + // Pipeline layout + VkPipelineLayout pipelinelayout; + VkPushConstantRange pushConstantRange{}; + pushConstantRange.stageFlags = VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT; + + switch (target) { + case IRRADIANCE: + pushConstantRange.size = sizeof(PushBlockIrradiance); + break; + case PREFILTEREDENV: + pushConstantRange.size = sizeof(PushBlockPrefilterEnv); + break; + }; + + VkPipelineLayoutCreateInfo pipelineLayoutCI{}; + pipelineLayoutCI.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO; + pipelineLayoutCI.setLayoutCount = 1; + pipelineLayoutCI.pSetLayouts = &descriptorsetlayout; + pipelineLayoutCI.pushConstantRangeCount = 1; + pipelineLayoutCI.pPushConstantRanges = &pushConstantRange; + VK_CHECK_RESULT(vkCreatePipelineLayout(device->dev, &pipelineLayoutCI, nullptr, &pipelinelayout)); + + // Pipeline + VkPipelineInputAssemblyStateCreateInfo inputAssemblyStateCI{}; + inputAssemblyStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO; + inputAssemblyStateCI.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST; + + VkPipelineRasterizationStateCreateInfo rasterizationStateCI{}; + rasterizationStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO; + rasterizationStateCI.polygonMode = VK_POLYGON_MODE_FILL; + rasterizationStateCI.cullMode = VK_CULL_MODE_NONE; + rasterizationStateCI.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE; + rasterizationStateCI.lineWidth = 1.0f; + + VkPipelineColorBlendAttachmentState blendAttachmentState{}; + blendAttachmentState.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT; + blendAttachmentState.blendEnable = VK_FALSE; + + VkPipelineColorBlendStateCreateInfo colorBlendStateCI{}; + colorBlendStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO; + colorBlendStateCI.attachmentCount = 1; + colorBlendStateCI.pAttachments = &blendAttachmentState; + + VkPipelineDepthStencilStateCreateInfo depthStencilStateCI{}; + depthStencilStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO; + depthStencilStateCI.depthTestEnable = VK_FALSE; + depthStencilStateCI.depthWriteEnable = VK_FALSE; + depthStencilStateCI.depthCompareOp = VK_COMPARE_OP_LESS_OR_EQUAL; + depthStencilStateCI.front = depthStencilStateCI.back; + depthStencilStateCI.back.compareOp = VK_COMPARE_OP_ALWAYS; + + VkPipelineViewportStateCreateInfo viewportStateCI{}; + viewportStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO; + viewportStateCI.viewportCount = 1; + viewportStateCI.scissorCount = 1; + + VkPipelineMultisampleStateCreateInfo multisampleStateCI{}; + multisampleStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO; + multisampleStateCI.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT; + + std::vector dynamicStateEnables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR }; + VkPipelineDynamicStateCreateInfo dynamicStateCI{}; + dynamicStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO; + dynamicStateCI.pDynamicStates = dynamicStateEnables.data(); + dynamicStateCI.dynamicStateCount = static_cast(dynamicStateEnables.size()); + + // Vertex input state + VkVertexInputBindingDescription vertexInputBinding = { 0, sizeof(vkglTF::Model::Vertex), VK_VERTEX_INPUT_RATE_VERTEX }; + VkVertexInputAttributeDescription vertexInputAttribute = { 0, 0, VK_FORMAT_R32G32B32_SFLOAT, 0 }; + + VkPipelineVertexInputStateCreateInfo vertexInputStateCI{}; + vertexInputStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO; + vertexInputStateCI.vertexBindingDescriptionCount = 1; + vertexInputStateCI.pVertexBindingDescriptions = &vertexInputBinding; + vertexInputStateCI.vertexAttributeDescriptionCount = 1; + vertexInputStateCI.pVertexAttributeDescriptions = &vertexInputAttribute; + + std::array shaderStages; + + VkGraphicsPipelineCreateInfo pipelineCI{}; + pipelineCI.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO; + pipelineCI.layout = pipelinelayout; + pipelineCI.renderPass = renderpass; + pipelineCI.pInputAssemblyState = &inputAssemblyStateCI; + pipelineCI.pVertexInputState = &vertexInputStateCI; + pipelineCI.pRasterizationState = &rasterizationStateCI; + pipelineCI.pColorBlendState = &colorBlendStateCI; + pipelineCI.pMultisampleState = &multisampleStateCI; + pipelineCI.pViewportState = &viewportStateCI; + pipelineCI.pDepthStencilState = &depthStencilStateCI; + pipelineCI.pDynamicState = &dynamicStateCI; + pipelineCI.stageCount = 2; + pipelineCI.pStages = shaderStages.data(); + pipelineCI.renderPass = renderpass; + + shaderStages[0] = loadShader(device->dev, "filtercube.vert.spv", VK_SHADER_STAGE_VERTEX_BIT); + switch (target) { + case IRRADIANCE: + shaderStages[1] = loadShader(device->dev, "irradiancecube.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT); + break; + case PREFILTEREDENV: + shaderStages[1] = loadShader(device->dev, "prefilterenvmap.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT); + break; + }; + VkPipeline pipeline; + VK_CHECK_RESULT(vkCreateGraphicsPipelines(device->dev, device->pipelineCache, 1, &pipelineCI, nullptr, &pipeline)); + for (auto shaderStage : shaderStages) { + vkDestroyShaderModule(device->dev, shaderStage.module, nullptr); + } + + // Render cubemap + VkClearValue clearValues[1]; + clearValues[0].color = { { 0.0f, 0.0f, 0.2f, 0.0f } }; + + VkRenderPassBeginInfo renderPassBeginInfo = {VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO}; + renderPassBeginInfo.renderPass = renderpass; + renderPassBeginInfo.framebuffer = offscreen.framebuffer; + renderPassBeginInfo.renderArea.extent.width = dim; + renderPassBeginInfo.renderArea.extent.height = dim; + renderPassBeginInfo.clearValueCount = 1; + renderPassBeginInfo.pClearValues = clearValues; + + std::vector matrices = { + glm::rotate(glm::rotate(glm::mat4(1.0f), glm::radians(90.0f), glm::vec3(0.0f, 1.0f, 0.0f)), glm::radians(180.0f), glm::vec3(1.0f, 0.0f, 0.0f)), + glm::rotate(glm::rotate(glm::mat4(1.0f), glm::radians(-90.0f), glm::vec3(0.0f, 1.0f, 0.0f)), glm::radians(180.0f), glm::vec3(1.0f, 0.0f, 0.0f)), + glm::rotate(glm::mat4(1.0f), glm::radians(90.0f), glm::vec3(1.0f, 0.0f, 0.0f)), + glm::rotate(glm::mat4(1.0f), glm::radians(-90.0f), glm::vec3(1.0f, 0.0f, 0.0f)), + glm::rotate(glm::mat4(1.0f), glm::radians(180.0f), glm::vec3(1.0f, 0.0f, 0.0f)), + glm::rotate(glm::mat4(1.0f), glm::radians(180.0f), glm::vec3(0.0f, 0.0f, 1.0f)), + }; + + VkCommandBuffer cmdBuf = device->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true); + + VkViewport viewport = {0, 0, (float)dim, (float)dim, 0.0f, 1.0f}; + VkRect2D scissor = {{}, {renderTarget->width, renderTarget->height}}; + + vkCmdSetViewport(cmdBuf, 0, 1, &viewport); + vkCmdSetScissor(cmdBuf, 0, 1, &scissor); + + VkImageSubresourceRange subresourceRange{VK_IMAGE_ASPECT_COLOR_BIT, 0, numMips,0 , 6}; + + // Change image layout for all cubemap faces to transfer destination + { + VkImageMemoryBarrier imageMemoryBarrier{}; + imageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; + imageMemoryBarrier.image = cubemap.image; + imageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED; + imageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL; + imageMemoryBarrier.srcAccessMask = 0; + imageMemoryBarrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT; + imageMemoryBarrier.subresourceRange = subresourceRange; + vkCmdPipelineBarrier(cmdBuf, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, 0, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier); + } + + for (uint32_t m = 0; m < numMips; m++) { + for (uint32_t f = 0; f < 6; f++) { + viewport.width = static_cast(dim * std::pow(0.5f, m)); + viewport.height = static_cast(dim * std::pow(0.5f, m)); + vkCmdSetViewport(cmdBuf, 0, 1, &viewport); + + // Render scene from cube face's point of view + vkCmdBeginRenderPass(cmdBuf, &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE); + + // Pass parameters for current pass using a push constant block + switch (target) { + case IRRADIANCE: + pushBlockIrradiance.mvp = glm::perspective((float)(M_PI / 2.0), 1.0f, 0.1f, 512.0f) * matrices[f]; + vkCmdPushConstants(cmdBuf, pipelinelayout, VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, 0, sizeof(PushBlockIrradiance), &pushBlockIrradiance); + break; + case PREFILTEREDENV: + pushBlockPrefilterEnv.mvp = glm::perspective((float)(M_PI / 2.0), 1.0f, 0.1f, 512.0f) * matrices[f]; + pushBlockPrefilterEnv.roughness = (float)m / (float)(numMips - 1); + vkCmdPushConstants(cmdBuf, pipelinelayout, VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, 0, sizeof(PushBlockPrefilterEnv), &pushBlockPrefilterEnv); + break; + }; + + vkCmdBindPipeline(cmdBuf, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline); + vkCmdBindDescriptorSets(cmdBuf, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelinelayout, 0, 1, &descriptorset, 0, NULL); + + skybox.buildCommandBuffer(cmdBuf, pipelinelayout); + + vkCmdEndRenderPass(cmdBuf); + + { + VkImageMemoryBarrier imageMemoryBarrier{}; + imageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; + imageMemoryBarrier.image = offscreen.image; + imageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL; + imageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL; + imageMemoryBarrier.srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; + imageMemoryBarrier.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT; + imageMemoryBarrier.subresourceRange = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 }; + vkCmdPipelineBarrier(cmdBuf, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, 0, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier); + } + + // Copy region for transfer from framebuffer to cube face + VkImageCopy copyRegion{}; + + copyRegion.srcSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + copyRegion.srcSubresource.baseArrayLayer = 0; + copyRegion.srcSubresource.mipLevel = 0; + copyRegion.srcSubresource.layerCount = 1; + copyRegion.srcOffset = { 0, 0, 0 }; + + copyRegion.dstSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + copyRegion.dstSubresource.baseArrayLayer = f; + copyRegion.dstSubresource.mipLevel = m; + copyRegion.dstSubresource.layerCount = 1; + copyRegion.dstOffset = { 0, 0, 0 }; + + copyRegion.extent.width = static_cast(viewport.width); + copyRegion.extent.height = static_cast(viewport.height); + copyRegion.extent.depth = 1; + + vkCmdCopyImage( + cmdBuf, + offscreen.image, + VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, + cubemap.image, + VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, + 1, + ©Region); + + { + VkImageMemoryBarrier imageMemoryBarrier{}; + imageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; + imageMemoryBarrier.image = offscreen.image; + imageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL; + imageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL; + imageMemoryBarrier.srcAccessMask = VK_ACCESS_TRANSFER_READ_BIT; + imageMemoryBarrier.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; + imageMemoryBarrier.subresourceRange = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 }; + vkCmdPipelineBarrier(cmdBuf, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, 0, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier); + } + + } + } + + { + VkImageMemoryBarrier imageMemoryBarrier{}; + imageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; + imageMemoryBarrier.image = cubemap.image; + imageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL; + imageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; + imageMemoryBarrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT; + imageMemoryBarrier.dstAccessMask = VK_ACCESS_HOST_WRITE_BIT | VK_ACCESS_TRANSFER_WRITE_BIT; + imageMemoryBarrier.subresourceRange = subresourceRange; + vkCmdPipelineBarrier(cmdBuf, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, 0, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier); + } + + device->flushCommandBuffer(cmdBuf, device->queue); + + vkDestroyRenderPass(device->dev, renderpass, nullptr); + vkDestroyFramebuffer(device->dev, offscreen.framebuffer, nullptr); + vkFreeMemory(device->dev, offscreen.memory, nullptr); + vkDestroyImageView(device->dev, offscreen.view, nullptr); + vkDestroyImage(device->dev, offscreen.image, nullptr); + vkDestroyDescriptorPool(device->dev, descriptorpool, nullptr); + vkDestroyDescriptorSetLayout(device->dev, descriptorsetlayout, nullptr); + vkDestroyPipeline(device->dev, pipeline, nullptr); + vkDestroyPipelineLayout(device->dev, pipelinelayout, nullptr); + + cubemap.descriptor.imageView = cubemap.view; + cubemap.descriptor.sampler = cubemap.sampler; + cubemap.descriptor.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; + cubemap.device = device; + + switch (target) { + case IRRADIANCE: + textures.irradianceCube = cubemap; + break; + case PREFILTEREDENV: + textures.prefilteredCube = cubemap; + //lightingParams.prefilteredCubeMipLevels = numMips; + break; + }; + + auto tEnd = std::chrono::high_resolution_clock::now(); + auto tDiff = std::chrono::duration(tEnd - tStart).count(); + std::cout << "Generating cube map with " << numMips << " mip levels took " << tDiff << " ms" << std::endl; + } +} -- cgit v1.3.1-4-g156e