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kraken/kraken/KRPipeline.cpp

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//
// KRPipeline.cpp
// Kraken Engine
//
// Copyright 2022 Kearwood Gilbert. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other materials
// provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY KEARWOOD GILBERT ''AS IS'' AND ANY EXPRESS OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KEARWOOD GILBERT OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// The views and conclusions contained in the software and documentation are those of the
// authors and should not be interpreted as representing official policies, either expressed
// or implied, of Kearwood Gilbert.
//
#include "KRPipeline.h"
#include "assert.h"
#include "KRLight.h"
#include "KRDirectionalLight.h"
#include "KRSpotLight.h"
#include "KRPointLight.h"
#include "KRContext.h"
#include "KRRenderPass.h"
using namespace hydra;
const char* KRPipeline::KRENGINE_PUSH_CONSTANT_NAMES[] = {
"material_ambient", // PushConstant::material_ambient
"material_diffuse", // PushConstant::material_diffuse
"material_specular", // PushConstant::material_specular
"material_reflection", // PushConstant::material_reflection
"material_alpha", // PushConstant::material_alpha
"material_shininess", // PushConstant::material_shininess
"light_position", // PushConstant::light_position
"light_direction_model_space", // PushConstant::light_direction_model_space
"light_direction_view_space", // PushConstant::light_direction_view_space
"light_color", // PushConstant::light_color
"light_decay_start", // PushConstant::light_decay_start
"light_cutoff", // PushConstant::light_cutoff
"light_intensity", // PushConstant::light_intensity
"flare_size", // PushConstant::flare_size
"view_space_model_origin", // PushConstant::view_space_model_origin
"mvp_matrix", // PushConstant::mvp
"inv_projection_matrix", // PushConstant::invp
"inv_mvp_matrix", // PushConstant::invmvp
"inv_mvp_matrix_no_translate", // PushConstant::invmvp_no_translate
"model_view_inverse_transpose_matrix", // PushConstant::model_view_inverse_transpose
"model_inverse_transpose_matrix", // PushConstant::model_inverse_transpose
"model_view_matrix", // PushConstant::model_view
"model_matrix", // PushConstant::model_matrix
"projection_matrix", // PushConstant::projection_matrix
"camera_position_model_space", // PushConstant::camerapos_model_space
"viewport", // PushConstant::viewport
"diffuseTexture", // PushConstant::diffusetexture
"specularTexture", // PushConstant::speculartexture
"reflectionCubeTexture", // PushConstant::reflectioncubetexture
"reflectionTexture", // PushConstant::reflectiontexture
"normalTexture", // PushConstant::normaltexture
"diffuseTexture_Scale", // PushConstant::diffusetexture_scale
"specularTexture_Scale", // PushConstant::speculartexture_scale
"reflectionTexture_Scale", // PushConstant::reflectiontexture_scale
"normalTexture_Scale", // PushConstant::normaltexture_scale
"normalTexture_Scale", // PushConstant::ambienttexture_scale
"diffuseTexture_Offset", // PushConstant::diffusetexture_offset
"specularTexture_Offset", // PushConstant::speculartexture_offset
"reflectionTexture_Offset", // PushConstant::reflectiontexture_offset
"normalTexture_Offset", // PushConstant::normaltexture_offset
"ambientTexture_Offset", // PushConstant::ambienttexture_offset
"shadow_mvp1", // PushConstant::shadow_mvp1
"shadow_mvp2", // PushConstant::shadow_mvp2
"shadow_mvp3", // PushConstant::shadow_mvp3
"shadowTexture1", // PushConstant::shadowtexture1
"shadowTexture2", // PushConstant::shadowtexture2
"shadowTexture3", // PushConstant::shadowtexture3
"lightmapTexture", // PushConstant::lightmaptexture
"gbuffer_frame", // PushConstant::gbuffer_frame
"gbuffer_depth", // PushConstant::gbuffer_depth
"depthFrame", // PushConstant::depth_frame
"volumetricEnvironmentFrame", // PushConstant::volumetric_environment_frame
"renderFrame", // PushConstant::render_frame
"time_absolute", // PushConstant::absolute_time
"fog_near", // PushConstant::fog_near
"fog_far", // PushConstant::fog_far
"fog_density", // PushConstant::fog_density
"fog_color", // PushConstant::fog_color
"fog_scale", // PushConstant::fog_scale
"fog_density_premultiplied_exponential", // PushConstant::density_premultiplied_exponential
"fog_density_premultiplied_squared", // PushConstant::density_premultiplied_squared
"slice_depth_scale", // PushConstant::slice_depth_scale
"particle_origin", // PushConstant::particle_origin
"bone_transforms", // PushConstant::bone_transforms
"rim_color", // PushConstant::rim_color
"rim_power", // PushConstant::rim_power
"fade_color", // PushConstant::fade_color
};
KRPipeline::KRPipeline(KRContext& context, KrDeviceHandle deviceHandle, KRRenderPass& renderPass, Vector2i viewport_size, Vector2i scissor_size, const PipelineInfo& info, const char* szKey, const std::vector<KRShader*>& shaders, uint32_t vertexAttributes, ModelFormat modelFormat)
: KRContextObject(context)
, m_deviceHandle(deviceHandle)
{
std::unique_ptr<KRDevice>& device = getContext().getDeviceManager()->getDevice(m_deviceHandle);
for (StageInfo& stageInfo : m_stages) {
PushConstantInfo& pushConstants = stageInfo.pushConstants;
pushConstants.buffer = nullptr;
pushConstants.bufferSize = 0;
memset(pushConstants.size, 0, kPushConstantCount);
memset(pushConstants.offset, 0, kPushConstantCount * sizeof(int));
pushConstants.layout = nullptr;
}
m_descriptorSetLayout = nullptr;
m_pipelineLayout = nullptr;
m_graphicsPipeline = nullptr;
m_descriptorSets.reserve(KRENGINE_MAX_FRAMES_IN_FLIGHT);
// TODO - Handle device removal
strcpy(m_szKey, szKey);
const int kMaxStages = 4;
VkPipelineShaderStageCreateInfo stages[kMaxStages];
memset(static_cast<void*>(stages), 0, sizeof(VkPipelineShaderStageCreateInfo) * kMaxStages);
size_t stage_count = 0;
std::vector<VkDescriptorSetLayoutBinding> uboLayoutBindings;
// TODO - Refactor this... These lookup tables should be in KRMesh...
static const KRMesh::vertex_attrib_t attribute_mapping[KRMesh::KRENGINE_NUM_ATTRIBUTES] = {
KRMesh::KRENGINE_ATTRIB_VERTEX,
KRMesh::KRENGINE_ATTRIB_NORMAL,
KRMesh::KRENGINE_ATTRIB_TANGENT,
KRMesh::KRENGINE_ATTRIB_TEXUVA,
KRMesh::KRENGINE_ATTRIB_TEXUVB,
KRMesh::KRENGINE_ATTRIB_BONEINDEXES,
KRMesh::KRENGINE_ATTRIB_BONEWEIGHTS,
KRMesh::KRENGINE_ATTRIB_VERTEX,
KRMesh::KRENGINE_ATTRIB_NORMAL,
KRMesh::KRENGINE_ATTRIB_TANGENT,
KRMesh::KRENGINE_ATTRIB_TEXUVA,
KRMesh::KRENGINE_ATTRIB_TEXUVB,
};
uint32_t attribute_locations[KRMesh::KRENGINE_NUM_ATTRIBUTES] = {};
uint32_t layout_binding_count = 0;
for (KRShader* shader : shaders) {
const SpvReflectShaderModule* reflection = shader->getReflection();
layout_binding_count += reflection->descriptor_binding_count;
}
uboLayoutBindings.reserve(layout_binding_count);
for (KRShader* shader : shaders) {
VkShaderModule shaderModule;
if (!shader->createShaderModule(device->m_logicalDevice, shaderModule)) {
// failed! TODO - Error handling
}
const SpvReflectShaderModule* reflection = shader->getReflection();
for (uint32_t b = 0; b < reflection->descriptor_binding_count; b++) {
SpvReflectDescriptorBinding& binding_reflect = reflection->descriptor_bindings[b];
VkDescriptorSetLayoutBinding& binding = uboLayoutBindings.emplace_back();
memset(&binding, 0, sizeof(VkDescriptorSetLayoutBinding));
binding.binding = binding_reflect.binding;
// Note: VkDescriptorType and SpvReflectDescriptorType values match
binding.descriptorType = static_cast<VkDescriptorType>(binding_reflect.descriptor_type);
binding.descriptorCount = binding_reflect.count;
binding.pImmutableSamplers = nullptr;
binding.stageFlags = shader->getShaderStageFlagBits();
}
VkPipelineShaderStageCreateInfo& stageInfo = stages[stage_count++];
stageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
stageInfo.stage = shader->getShaderStageFlagBits();
if (stageInfo.stage == VK_SHADER_STAGE_VERTEX_BIT) {
for (uint32_t i = 0; i < reflection->input_variable_count; i++) {
// TODO - We should have an interface to allow classes such as KRMesh to expose bindings
SpvReflectInterfaceVariable& input_var = *reflection->input_variables[i];
if (strcmp(input_var.name, "vertex_position") == 0) {
attribute_locations[KRMesh::KRENGINE_ATTRIB_VERTEX] = input_var.location + 1;
} else if (strcmp(input_var.name, "vertex_normal") == 0) {
attribute_locations[KRMesh::KRENGINE_ATTRIB_NORMAL] = input_var.location + 1;
} else if (strcmp(input_var.name, "vertex_tangent") == 0) {
attribute_locations[KRMesh::KRENGINE_ATTRIB_TANGENT] = input_var.location + 1;
} else if (strcmp(input_var.name, "vertex_uv") == 0) {
attribute_locations[KRMesh::KRENGINE_ATTRIB_TEXUVA] = input_var.location + 1;
} else if (strcmp(input_var.name, "vertex_lightmap_uv") == 0) {
attribute_locations[KRMesh::KRENGINE_ATTRIB_TEXUVB] = input_var.location + 1;
} else if (strcmp(input_var.name, "bone_indexes") == 0) {
attribute_locations[KRMesh::KRENGINE_ATTRIB_BONEINDEXES] = input_var.location + 1;
} else if (strcmp(input_var.name, "bone_weights") == 0) {
attribute_locations[KRMesh::KRENGINE_ATTRIB_BONEWEIGHTS] = input_var.location + 1;
}
}
}
initPushConstantStage(shader->getShaderStage(), reflection);
initDescriptorSetStage(shader->getShaderStage(), reflection);
stageInfo.module = shaderModule;
stageInfo.pName = "main";
}
VkVertexInputBindingDescription bindingDescription{};
bindingDescription.binding = 0;
bindingDescription.stride = KRMesh::VertexSizeForAttributes(vertexAttributes);
bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
uint32_t vertexAttributeCount = 0;
VkVertexInputAttributeDescription vertexAttributeDescriptions[KRMesh::KRENGINE_NUM_ATTRIBUTES]{};
for (int i = KRMesh::KRENGINE_ATTRIB_VERTEX; i < KRMesh::KRENGINE_NUM_ATTRIBUTES; i++) {
KRMesh::vertex_attrib_t mesh_attrib = static_cast<KRMesh::vertex_attrib_t>(i);
int location_attrib = attribute_mapping[i];
if (KRMesh::has_vertex_attribute(vertexAttributes, (KRMesh::vertex_attrib_t)i) && attribute_locations[location_attrib]) {
VkVertexInputAttributeDescription& desc = vertexAttributeDescriptions[vertexAttributeCount++];
desc.binding = 0;
desc.location = attribute_locations[location_attrib] - 1;
desc.format = KRMesh::AttributeVulkanFormat(mesh_attrib);
desc.offset = KRMesh::AttributeOffset(mesh_attrib, vertexAttributes);
}
}
VkPipelineVertexInputStateCreateInfo vertexInputInfo{};
vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
vertexInputInfo.vertexBindingDescriptionCount = 1;
vertexInputInfo.pVertexBindingDescriptions = &bindingDescription;
vertexInputInfo.vertexAttributeDescriptionCount = vertexAttributeCount;
vertexInputInfo.pVertexAttributeDescriptions = vertexAttributeDescriptions;
VkPipelineInputAssemblyStateCreateInfo inputAssembly{};
inputAssembly.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
switch (modelFormat) {
case ModelFormat::KRENGINE_MODEL_FORMAT_INDEXED_TRIANGLES:
case ModelFormat::KRENGINE_MODEL_FORMAT_TRIANGLES:
inputAssembly.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
break;
case ModelFormat::KRENGINE_MODEL_FORMAT_INDEXED_STRIP:
case ModelFormat::KRENGINE_MODEL_FORMAT_STRIP:
inputAssembly.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP;
break;
}
inputAssembly.primitiveRestartEnable = VK_FALSE;
VkViewport viewport{};
viewport.x = 0.0f;
viewport.y = 0.0f;
viewport.width = static_cast<float>(viewport_size.x);
viewport.height = static_cast<float>(viewport_size.y);
viewport.minDepth = 0.0f;
viewport.maxDepth = 1.0f;
VkRect2D scissor{};
scissor.offset = { 0, 0 };
scissor.extent.width = scissor_size.x;
scissor.extent.height = scissor_size.y;
VkPipelineViewportStateCreateInfo viewportState{};
viewportState.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
viewportState.viewportCount = 1;
viewportState.pViewports = &viewport;
viewportState.scissorCount = 1;
viewportState.pScissors = &scissor;
VkPipelineRasterizationStateCreateInfo rasterizer{};
rasterizer.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
rasterizer.depthClampEnable = VK_FALSE;
rasterizer.rasterizerDiscardEnable = VK_FALSE;
rasterizer.polygonMode = VK_POLYGON_MODE_FILL;
rasterizer.lineWidth = 1.0f;
switch (info.cullMode) {
case CullMode::kCullBack:
rasterizer.cullMode = VK_CULL_MODE_BACK_BIT;
break;
case CullMode::kCullFront:
rasterizer.cullMode = VK_CULL_MODE_FRONT_BIT;
break;
case CullMode::kCullNone:
rasterizer.cullMode = VK_CULL_MODE_NONE;
break;
}
rasterizer.frontFace = VK_FRONT_FACE_CLOCKWISE;
rasterizer.depthBiasEnable = VK_FALSE;
rasterizer.depthBiasConstantFactor = 0.0f;
rasterizer.depthBiasClamp = 0.0f;
rasterizer.depthBiasSlopeFactor = 0.0f;
VkPipelineMultisampleStateCreateInfo multisampling{};
multisampling.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
multisampling.sampleShadingEnable = VK_FALSE;
multisampling.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
multisampling.minSampleShading = 1.0f;
multisampling.pSampleMask = nullptr;
multisampling.alphaToCoverageEnable = VK_FALSE;
multisampling.alphaToOneEnable = VK_FALSE;
VkPipelineColorBlendAttachmentState colorBlendAttachment{};
colorBlendAttachment.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
switch (info.rasterMode) {
case RasterMode::kOpaque:
case RasterMode::kOpaqueLessTest:
case RasterMode::kOpaqueNoTest:
case RasterMode::kOpaqueNoDepthWrite:
colorBlendAttachment.blendEnable = VK_FALSE;
colorBlendAttachment.srcColorBlendFactor = VK_BLEND_FACTOR_ONE;
colorBlendAttachment.dstColorBlendFactor = VK_BLEND_FACTOR_ZERO;
colorBlendAttachment.colorBlendOp = VK_BLEND_OP_ADD;
break;
case RasterMode::kAlphaBlend:
case RasterMode::kAlphaBlendNoTest:
colorBlendAttachment.blendEnable = VK_TRUE;
colorBlendAttachment.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
colorBlendAttachment.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
colorBlendAttachment.colorBlendOp = VK_BLEND_OP_ADD;
break;
case RasterMode::kAdditive:
case RasterMode::kAdditiveNoTest:
colorBlendAttachment.blendEnable = VK_TRUE;
colorBlendAttachment.srcColorBlendFactor = VK_BLEND_FACTOR_ONE;
colorBlendAttachment.dstColorBlendFactor = VK_BLEND_FACTOR_ONE;
colorBlendAttachment.colorBlendOp = VK_BLEND_OP_ADD;
break;
}
colorBlendAttachment.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE;
colorBlendAttachment.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
colorBlendAttachment.alphaBlendOp = VK_BLEND_OP_ADD;
VkPipelineColorBlendStateCreateInfo colorBlending{};
colorBlending.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
colorBlending.logicOpEnable = VK_FALSE;
colorBlending.logicOp = VK_LOGIC_OP_COPY;
colorBlending.attachmentCount = 1;
colorBlending.pAttachments = &colorBlendAttachment;
colorBlending.blendConstants[0] = 0.0f;
colorBlending.blendConstants[1] = 0.0f;
colorBlending.blendConstants[2] = 0.0f;
colorBlending.blendConstants[3] = 0.0f;
if (uboLayoutBindings.size()) {
VkDescriptorSetLayoutCreateInfo layoutInfo{};
layoutInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
layoutInfo.bindingCount = uboLayoutBindings.size();
layoutInfo.pBindings = uboLayoutBindings.data();
if (vkCreateDescriptorSetLayout(device->m_logicalDevice, &layoutInfo, nullptr, &m_descriptorSetLayout) != VK_SUCCESS) {
// failed! TODO - Error handling
}
}
VkPipelineLayoutCreateInfo pipelineLayoutInfo{};
pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
if (uboLayoutBindings.size()) {
pipelineLayoutInfo.setLayoutCount = 1;
pipelineLayoutInfo.pSetLayouts = &m_descriptorSetLayout;
} else {
pipelineLayoutInfo.setLayoutCount = 0;
pipelineLayoutInfo.pSetLayouts = nullptr;
}
pipelineLayoutInfo.pushConstantRangeCount = 0;
pipelineLayoutInfo.pPushConstantRanges = nullptr;
if (vkCreatePipelineLayout(device->m_logicalDevice, &pipelineLayoutInfo, nullptr, &m_pipelineLayout) != VK_SUCCESS) {
// failed! TODO - Error handling
}
int iStage = 0;
for (StageInfo& stageInfo : m_stages) {
PushConstantInfo& pushConstants = stageInfo.pushConstants;
if (pushConstants.buffer) {
VkPipelineLayoutCreateInfo pushConstantsLayoutInfo{};
pushConstantsLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
pushConstantsLayoutInfo.setLayoutCount = 0;
pushConstantsLayoutInfo.pSetLayouts = nullptr;
pushConstantsLayoutInfo.pushConstantRangeCount = 0;
pushConstantsLayoutInfo.pPushConstantRanges = nullptr;
// TODO - We need to support push constants for other shader stages
VkPushConstantRange push_constant{};
push_constant.offset = 0;
push_constant.size = pushConstants.bufferSize;
push_constant.stageFlags = getShaderStageFlagBitsFromShaderStage(static_cast<ShaderStage>(iStage));
pushConstantsLayoutInfo.pPushConstantRanges = &push_constant;
pushConstantsLayoutInfo.pushConstantRangeCount = 1;
if (vkCreatePipelineLayout(device->m_logicalDevice, &pushConstantsLayoutInfo, nullptr, &pushConstants.layout) != VK_SUCCESS) {
// failed! TODO - Error handling
}
}
iStage++;
}
VkPipelineDepthStencilStateCreateInfo depthStencil{};
depthStencil.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
switch (info.rasterMode) {
case RasterMode::kOpaque:
case RasterMode::kOpaqueLessTest:
depthStencil.depthTestEnable = VK_TRUE;
depthStencil.depthWriteEnable = VK_TRUE;
break;
case RasterMode::kOpaqueNoTest:
depthStencil.depthTestEnable = VK_FALSE;
depthStencil.depthWriteEnable = VK_TRUE;
break;
case RasterMode::kOpaqueNoDepthWrite:
case RasterMode::kAlphaBlend:
case RasterMode::kAdditive:
depthStencil.depthTestEnable = VK_TRUE;
depthStencil.depthWriteEnable = VK_FALSE;
break;
case RasterMode::kAlphaBlendNoTest:
case RasterMode::kAdditiveNoTest:
depthStencil.depthTestEnable = VK_FALSE;
depthStencil.depthWriteEnable = VK_FALSE;
break;
}
if (info.rasterMode == RasterMode::kOpaqueLessTest) {
depthStencil.depthCompareOp = VK_COMPARE_OP_LESS;
} else {
depthStencil.depthCompareOp = VK_COMPARE_OP_LESS_OR_EQUAL;
}
depthStencil.depthBoundsTestEnable = VK_FALSE;
depthStencil.minDepthBounds = 0.0f;
depthStencil.maxDepthBounds = 1.0f;
depthStencil.stencilTestEnable = VK_FALSE;
depthStencil.front = {};
depthStencil.back = {};
VkGraphicsPipelineCreateInfo pipelineInfo{};
pipelineInfo.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
pipelineInfo.stageCount = stage_count;
pipelineInfo.pStages = stages;
pipelineInfo.pVertexInputState = &vertexInputInfo;
pipelineInfo.pInputAssemblyState = &inputAssembly;
pipelineInfo.pViewportState = &viewportState;
pipelineInfo.pRasterizationState = &rasterizer;
pipelineInfo.pMultisampleState = &multisampling;
pipelineInfo.pDepthStencilState = &depthStencil;
pipelineInfo.pColorBlendState = &colorBlending;
pipelineInfo.pDynamicState = nullptr;
pipelineInfo.layout = m_pipelineLayout;
pipelineInfo.renderPass = renderPass.m_renderPass;
pipelineInfo.subpass = 0;
pipelineInfo.basePipelineHandle = VK_NULL_HANDLE;
pipelineInfo.basePipelineIndex = -1;
if (vkCreateGraphicsPipelines(device->m_logicalDevice, VK_NULL_HANDLE, 1, &pipelineInfo, nullptr, &m_graphicsPipeline) != VK_SUCCESS) {
// Failed! TODO - Error handling
}
}
KRPipeline::~KRPipeline()
{
if (m_graphicsPipeline) {
// TODO: vkDestroyPipeline(device, m_graphicsPipeline, nullptr);
}
if (m_pipelineLayout) {
// TODO: vkDestroyPipelineLayout(device, m_pipelineLayout, nullptr);
}
if (m_descriptorSetLayout) {
// TODO: vkDestroyDescriptorSetLayout(device, m_descriptorSetLayout, nullptr);
}
if (getContext().getPipelineManager()->m_active_pipeline == this) {
getContext().getPipelineManager()->m_active_pipeline = NULL;
}
for (StageInfo& stageInfo : m_stages) {
PushConstantInfo& pushConstants = stageInfo.pushConstants;
if (pushConstants.layout) {
// TODO: vkDestroyPipelineLayout(device, pushConstants.layout, nullptr);
}
if (pushConstants.buffer) {
delete pushConstants.buffer;
pushConstants.buffer = nullptr;
}
}
}
void KRPipeline::initPushConstantStage(ShaderStage stage, const SpvReflectShaderModule* reflection)
{
PushConstantInfo& pushConstants = m_stages[static_cast<int>(stage)].pushConstants;
for (int i = 0; i < reflection->push_constant_block_count; i++) {
const SpvReflectBlockVariable& block = reflection->push_constant_blocks[i];
if (stricmp(block.name, "constants") == 0) {
if (block.size > 0) {
pushConstants.buffer = (__uint8_t*)malloc(block.size);
memset(pushConstants.buffer, 0, block.size);
pushConstants.bufferSize = block.size;
// Get push constant offsets
for (int iUniform = 0; iUniform < kPushConstantCount; iUniform++) {
for (int iMember = 0; iMember < block.member_count; iMember++) {
const SpvReflectBlockVariable& member = block.members[iMember];
if (stricmp(KRENGINE_PUSH_CONSTANT_NAMES[iUniform], member.name) == 0) {
pushConstants.offset[iUniform] = member.offset;
pushConstants.size[iUniform] = member.size;
}
}
}
}
}
}
}
void KRPipeline::initDescriptorSetStage(ShaderStage stage, const SpvReflectShaderModule* reflection)
{
std::vector<DescriptorSetInfo>& descriptorSets = m_stages[static_cast<int>(stage)].descriptorSets;
descriptorSets.reserve(reflection->descriptor_set_count);
for (int i = 0; i < reflection->descriptor_set_count; i++) {
SpvReflectDescriptorSet descriptorSet = reflection->descriptor_sets[i];
DescriptorSetInfo& descriptorSetInfo = descriptorSets.emplace_back();
descriptorSetInfo.bindings.reserve(descriptorSet.binding_count);
for (int j = 0; j < descriptorSet.binding_count; j++) {
SpvReflectDescriptorBinding& binding = *descriptorSet.bindings[j];
DescriptorBinding& descriptorQuery = descriptorSetInfo.bindings.emplace_back();
switch (binding.descriptor_type) {
case SPV_REFLECT_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER:
{
ImageDescriptorInfo& imageInfo = descriptorQuery.emplace<ImageDescriptorInfo>();
imageInfo.name = binding.name;
imageInfo.texture = nullptr;
imageInfo.sampler = nullptr;
}
break;
case SPV_REFLECT_DESCRIPTOR_TYPE_UNIFORM_BUFFER:
{
UniformBufferDescriptorInfo& bufferInfo = descriptorQuery.emplace<UniformBufferDescriptorInfo>();
bufferInfo.name = binding.name;
bufferInfo.buffer = nullptr;
}
break;
default:
// Not supported
// TODO - Error handling
break;
}
}
}
}
bool KRPipeline::hasPushConstant(PushConstant location) const
{
for (const StageInfo& stageInfo : m_stages) {
const PushConstantInfo& pushConstants = stageInfo.pushConstants;
if (pushConstants.size[static_cast<size_t>(location)]) {
return true;
}
}
return false;
}
void KRPipeline::setPushConstant(PushConstant location, float value)
{
for (StageInfo& stageInfo : m_stages) {
PushConstantInfo& pushConstants = stageInfo.pushConstants;
if (pushConstants.size[static_cast<size_t>(location)] == sizeof(value)) {
float* constant = (float*)(pushConstants.buffer + pushConstants.offset[static_cast<size_t>(location)]);
*constant = value;
}
}
}
void KRPipeline::setPushConstant(PushConstant location, int value)
{
for (StageInfo& stageInfo : m_stages) {
PushConstantInfo& pushConstants = stageInfo.pushConstants;
if (pushConstants.size[static_cast<size_t>(location)] == sizeof(value)) {
int* constant = (int*)(pushConstants.buffer + pushConstants.offset[static_cast<size_t>(location)]);
*constant = value;
}
}
}
void KRPipeline::setPushConstant(PushConstant location, const Vector2& value)
{
for (StageInfo& stageInfo : m_stages) {
PushConstantInfo& pushConstants = stageInfo.pushConstants;
if (pushConstants.size[static_cast<size_t>(location)] == sizeof(value)) {
Vector2* constant = (Vector2*)(pushConstants.buffer + pushConstants.offset[static_cast<size_t>(location)]);
*constant = value;
}
}
}
void KRPipeline::setPushConstant(PushConstant location, const Vector3& value)
{
for (StageInfo& stageInfo : m_stages) {
PushConstantInfo& pushConstants = stageInfo.pushConstants;
if (pushConstants.size[static_cast<size_t>(location)] == sizeof(value)) {
Vector3* constant = (Vector3*)(pushConstants.buffer + pushConstants.offset[static_cast<size_t>(location)]);
*constant = value;
}
}
}
void KRPipeline::setPushConstant(PushConstant location, const Vector4& value)
{
for (StageInfo& stageInfo : m_stages) {
PushConstantInfo& pushConstants = stageInfo.pushConstants;
if (pushConstants.size[static_cast<size_t>(location)] == sizeof(value)) {
Vector4* constant = (Vector4*)(pushConstants.buffer + pushConstants.offset[static_cast<size_t>(location)]);
*constant = value;
}
}
}
void KRPipeline::setPushConstant(PushConstant location, const Matrix4& value)
{
for (StageInfo& stageInfo : m_stages) {
PushConstantInfo& pushConstants = stageInfo.pushConstants;
if (pushConstants.size[static_cast<size_t>(location)] == sizeof(value)) {
Matrix4* constant = (Matrix4*)(pushConstants.buffer + pushConstants.offset[static_cast<size_t>(location)]);
*constant = value;
}
}
}
void KRPipeline::setPushConstant(PushConstant location, const Matrix4* value, const size_t count)
{
for (StageInfo& stageInfo : m_stages) {
PushConstantInfo& pushConstants = stageInfo.pushConstants;
// TODO - Vulkan refactoring
// GLDEBUG(glUniformMatrix4fv(pushConstants.offset[KRPipeline::PushConstant::bone_transforms], (int)bones.size(), GL_FALSE, bone_mats));
}
}
void KRPipeline::updateDescriptorBinding()
{
// TODO - Implement
// Vulkan Refactoring
}
bool KRPipeline::bind(VkCommandBuffer& commandBuffer, KRCamera& camera, const KRViewport& viewport, const Matrix4& matModel, const std::vector<KRPointLight*>* point_lights, const std::vector<KRDirectionalLight*>* directional_lights, const std::vector<KRSpotLight*>* spot_lights, const KRNode::RenderPass& renderPass)
{
updateDescriptorBinding();
updateDescriptorSets();
bindDescriptorSets(commandBuffer);
setPushConstant(PushConstant::absolute_time, getContext().getAbsoluteTime());
int light_directional_count = 0;
//int light_point_count = 0;
//int light_spot_count = 0;
// TODO - Need to support multiple lights and more light types in forward rendering
if (renderPass != KRNode::RENDER_PASS_DEFERRED_LIGHTS && renderPass != KRNode::RENDER_PASS_DEFERRED_GBUFFER && renderPass != KRNode::RENDER_PASS_DEFERRED_OPAQUE && renderPass != KRNode::RENDER_PASS_GENERATE_SHADOWMAPS) {
if (directional_lights) {
for (std::vector<KRDirectionalLight*>::const_iterator light_itr = directional_lights->begin(); light_itr != directional_lights->end(); light_itr++) {
KRDirectionalLight* directional_light = (*light_itr);
if (light_directional_count == 0) {
int cShadowBuffers = directional_light->getShadowBufferCount();
if (hasPushConstant(PushConstant::shadowtexture1) && cShadowBuffers > 0) {
// TODO - Vulkan Refactoring. Note: Sampler needs clamp-to-edge and linear filtering
if (m_pContext->getTextureManager()->selectTexture(0 /*GL_TEXTURE_2D*/, 3, directional_light->getShadowTextures()[0])) {
GLDEBUG(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
GLDEBUG(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
}
}
if (hasPushConstant(PushConstant::shadowtexture2) && cShadowBuffers > 1 && camera.settings.m_cShadowBuffers > 1) {
// TODO - Vulkan Refactoring. Note: Sampler needs clamp-to-edge and linear filtering
if (m_pContext->getTextureManager()->selectTexture(0 /*GL_TEXTURE_2D*/, 4, directional_light->getShadowTextures()[1])) {
GLDEBUG(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
GLDEBUG(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
}
}
if (hasPushConstant(PushConstant::shadowtexture3) && cShadowBuffers > 2 && camera.settings.m_cShadowBuffers > 2) {
// TODO - Vulkan Refactoring. Note: Sampler needs clamp-to-edge and linear filtering
if (m_pContext->getTextureManager()->selectTexture(0 /*GL_TEXTURE_2D*/, 5, directional_light->getShadowTextures()[2])) {
GLDEBUG(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
GLDEBUG(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
}
}
Matrix4 matBias;
matBias.translate(1.0, 1.0, 1.0);
matBias.scale(0.5);
for (int iShadow = 0; iShadow < cShadowBuffers; iShadow++) {
setPushConstant(static_cast<PushConstant>(static_cast<int>(PushConstant::shadow_mvp1) + iShadow), matModel * directional_light->getShadowViewports()[iShadow].getViewProjectionMatrix() * matBias);
}
if (hasPushConstant(PushConstant::light_direction_model_space)) {
Matrix4 inverseModelMatrix = matModel;
inverseModelMatrix.invert();
// Bind the light direction vector
Vector3 lightDirObject = Matrix4::Dot(inverseModelMatrix, directional_light->getWorldLightDirection());
lightDirObject.normalize();
setPushConstant(PushConstant::light_direction_model_space, lightDirObject);
}
}
light_directional_count++;
}
}
//light_point_count = point_lights.size();
//light_spot_count = spot_lights.size();
}
if (hasPushConstant(PushConstant::camerapos_model_space)) {
Matrix4 inverseModelMatrix = matModel;
inverseModelMatrix.invert();
if (hasPushConstant(PushConstant::camerapos_model_space)) {
// Transform location of camera to object space for calculation of specular halfVec
Vector3 cameraPosObject = Matrix4::Dot(inverseModelMatrix, viewport.getCameraPosition());
setPushConstant(PushConstant::camerapos_model_space, cameraPosObject);
}
}
if (hasPushConstant(PushConstant::mvp) || hasPushConstant(KRPipeline::PushConstant::invmvp)) {
// Bind our modelmatrix variable to be a uniform called mvpmatrix in our shaderprogram
Matrix4 mvpMatrix = matModel * viewport.getViewProjectionMatrix();
setPushConstant(PushConstant::mvp, mvpMatrix);
if (hasPushConstant(KRPipeline::PushConstant::invmvp)) {
setPushConstant(KRPipeline::PushConstant::invmvp, Matrix4::Invert(mvpMatrix));
}
}
if (hasPushConstant(KRPipeline::PushConstant::view_space_model_origin) || hasPushConstant(PushConstant::model_view_inverse_transpose) || hasPushConstant(KRPipeline::PushConstant::model_view)) {
Matrix4 matModelView = matModel * viewport.getViewMatrix();
setPushConstant(PushConstant::model_view, matModelView);
if (hasPushConstant(KRPipeline::PushConstant::view_space_model_origin)) {
Vector3 view_space_model_origin = Matrix4::Dot(matModelView, Vector3::Zero()); // Origin point of model space is the light source position. No perspective, so no w divide required
setPushConstant(PushConstant::view_space_model_origin, view_space_model_origin);
}
if (hasPushConstant(PushConstant::model_view_inverse_transpose)) {
Matrix4 matModelViewInverseTranspose = matModelView;
matModelViewInverseTranspose.transpose();
matModelViewInverseTranspose.invert();
setPushConstant(PushConstant::model_view_inverse_transpose, matModelViewInverseTranspose);
}
}
if (hasPushConstant(PushConstant::model_inverse_transpose)) {
Matrix4 matModelInverseTranspose = matModel;
matModelInverseTranspose.transpose();
matModelInverseTranspose.invert();
setPushConstant(PushConstant::model_inverse_transpose, matModelInverseTranspose);
}
if (hasPushConstant(KRPipeline::PushConstant::invp)) {
setPushConstant(PushConstant::invp, viewport.getInverseProjectionMatrix());
}
if (hasPushConstant(KRPipeline::PushConstant::invmvp_no_translate)) {
Matrix4 matInvMVPNoTranslate = matModel * viewport.getViewMatrix();;
// Remove the translation
matInvMVPNoTranslate.getPointer()[3] = 0;
matInvMVPNoTranslate.getPointer()[7] = 0;
matInvMVPNoTranslate.getPointer()[11] = 0;
matInvMVPNoTranslate.getPointer()[12] = 0;
matInvMVPNoTranslate.getPointer()[13] = 0;
matInvMVPNoTranslate.getPointer()[14] = 0;
matInvMVPNoTranslate.getPointer()[15] = 1.0;
matInvMVPNoTranslate = matInvMVPNoTranslate * viewport.getProjectionMatrix();
matInvMVPNoTranslate.invert();
setPushConstant(PushConstant::invmvp_no_translate, matInvMVPNoTranslate);
}
setPushConstant(PushConstant::model_matrix, matModel);
if (hasPushConstant(PushConstant::projection_matrix)) {
setPushConstant(PushConstant::projection_matrix, viewport.getProjectionMatrix());
}
if (hasPushConstant(PushConstant::viewport)) {
setPushConstant(PushConstant::viewport, Vector4::Create(
(float)0.0,
(float)0.0,
(float)viewport.getSize().x,
(float)viewport.getSize().y
)
);
}
// Fog parameters
setPushConstant(PushConstant::fog_near, camera.settings.fog_near);
setPushConstant(PushConstant::fog_far, camera.settings.fog_far);
setPushConstant(PushConstant::fog_density, camera.settings.fog_density);
setPushConstant(PushConstant::fog_color, camera.settings.fog_color);
if (hasPushConstant(PushConstant::fog_scale)) {
setPushConstant(PushConstant::fog_scale, 1.0f / (camera.settings.fog_far - camera.settings.fog_near));
}
if (hasPushConstant(PushConstant::density_premultiplied_exponential)) {
setPushConstant(PushConstant::density_premultiplied_exponential, -camera.settings.fog_density * 1.442695f); // -fog_density / log(2)
}
if (hasPushConstant(PushConstant::density_premultiplied_squared)) {
setPushConstant(PushConstant::density_premultiplied_squared, (float)(-camera.settings.fog_density * camera.settings.fog_density * 1.442695)); // -fog_density * fog_density / log(2)
}
// Sets the diffuseTexture variable to the first texture unit
setPushConstant(PushConstant::diffusetexture, 0);
// Sets the specularTexture variable to the second texture unit
setPushConstant(PushConstant::speculartexture, 1);
// Sets the normalTexture variable to the third texture unit
setPushConstant(PushConstant::normaltexture, 2);
// Sets the shadowTexture variable to the fourth texture unit
setPushConstant(PushConstant::shadowtexture1, 3);
setPushConstant(PushConstant::shadowtexture2, 4);
setPushConstant(PushConstant::shadowtexture3, 5);
setPushConstant(PushConstant::reflectioncubetexture, 4);
setPushConstant(PushConstant::lightmaptexture, 5);
setPushConstant(PushConstant::gbuffer_frame, 6);
setPushConstant(PushConstant::gbuffer_depth, 7); // Texture unit 7 is used for reading the depth buffer in gBuffer pass #2 and in post-processing pass
setPushConstant(PushConstant::reflectiontexture, 7); // Texture unit 7 is used for the reflection map textures in gBuffer pass #3 and when using forward rendering
setPushConstant(PushConstant::depth_frame, 0);
setPushConstant(PushConstant::render_frame, 1);
setPushConstant(PushConstant::volumetric_environment_frame, 2);
for (StageInfo& stageInfo : m_stages) {
PushConstantInfo& pushConstants = stageInfo.pushConstants;
if (pushConstants.buffer) {
vkCmdPushConstants(commandBuffer, pushConstants.layout, VK_SHADER_STAGE_VERTEX_BIT, 0, pushConstants.bufferSize, pushConstants.buffer);
}
}
vkCmdBindPipeline(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, m_graphicsPipeline);
return true;
}
void KRPipeline::updateDescriptorSets()
{
if (m_descriptorSetLayout == VK_NULL_HANDLE) {
// There are no descriptors
return;
}
std::unique_ptr<KRDevice>& device = getContext().getDeviceManager()->getDevice(m_deviceHandle);
// If the descriptor sets are not yet allocted, create them
if (m_descriptorSets.size() == 0) {
int descriptorSetCount = 0;
for (int stage = 0; stage < static_cast<size_t>(ShaderStage::ShaderStageCount); stage++) {
const StageInfo& stageInfo = m_stages[stage];
descriptorSetCount += stageInfo.descriptorSets.size();
}
m_descriptorSets.resize(KRENGINE_MAX_FRAMES_IN_FLIGHT * descriptorSetCount, VK_NULL_HANDLE);
std::vector<VkDescriptorSetLayout> layouts(KRENGINE_MAX_FRAMES_IN_FLIGHT, m_descriptorSetLayout);
device->createDescriptorSets(layouts, m_descriptorSets);
}
// Update the descriptor sets
// TODO - We should only do this when the descriptors have changed
int descriptorSetCount = m_descriptorSets.size() / KRENGINE_MAX_FRAMES_IN_FLIGHT;
int descriptorSetStart = (getContext().getCurrentFrame() % KRENGINE_MAX_FRAMES_IN_FLIGHT) * descriptorSetCount;
int descriptorSetIndex = descriptorSetStart;
std::vector<VkWriteDescriptorSet> descriptorWrites;
std::vector<VkDescriptorBufferInfo> buffers;
std::vector<VkDescriptorImageInfo> images;
for (int stage = 0; stage < static_cast<size_t>(ShaderStage::ShaderStageCount); stage++) {
StageInfo& stageInfo = m_stages[stage];
for (DescriptorSetInfo& descriptorSetInfo : stageInfo.descriptorSets) {
VkDescriptorSet descriptorSet = m_descriptorSets[descriptorSetIndex++];
int bindingIndex = 0;
for (DescriptorBinding& binding : descriptorSetInfo.bindings) {
UniformBufferDescriptorInfo* buffer = std::get_if<UniformBufferDescriptorInfo>(&binding);
ImageDescriptorInfo* image = std::get_if<ImageDescriptorInfo>(&binding);
if (buffer) {
VkDescriptorBufferInfo& bufferInfo = buffers.emplace_back(VkDescriptorBufferInfo{});
bufferInfo.buffer = buffer->buffer->getBuffer();
bufferInfo.offset = 0;
bufferInfo.range = VK_WHOLE_SIZE;
VkWriteDescriptorSet& descriptorWrite = descriptorWrites.emplace_back(VkWriteDescriptorSet{});
descriptorWrite.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
descriptorWrite.dstSet = descriptorSet;
descriptorWrite.dstBinding = bindingIndex;
descriptorWrite.dstArrayElement = 0;
descriptorWrite.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
descriptorWrite.descriptorCount = 1;
descriptorWrite.pBufferInfo = &bufferInfo;
} else if (image) {
VkDescriptorImageInfo& imageInfo = images.emplace_back(VkDescriptorImageInfo{});
imageInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
imageInfo.imageView = image->texture->getFullImageView(m_deviceHandle);
imageInfo.sampler = image->sampler->getSampler(m_deviceHandle);
VkWriteDescriptorSet& descriptorWrite = descriptorWrites.emplace_back(VkWriteDescriptorSet{});
descriptorWrite.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
descriptorWrite.dstSet = descriptorSet;
descriptorWrite.dstBinding = bindingIndex++;
descriptorWrite.dstArrayElement = 0;
descriptorWrite.descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
descriptorWrite.descriptorCount = 1;
descriptorWrite.pImageInfo = &imageInfo;
} else {
// TODO - Error Handling
assert(false);
}
bindingIndex++;
}
}
}
if (!descriptorWrites.empty()) {
vkUpdateDescriptorSets(device->m_logicalDevice, static_cast<uint32_t>(descriptorWrites.size()), descriptorWrites.data(), 0, nullptr);
}
}
void KRPipeline::bindDescriptorSets(VkCommandBuffer& commandBuffer)
{
if (m_descriptorSets.empty()) {
return;
}
int descriptorSetCount = m_descriptorSets.size() / KRENGINE_MAX_FRAMES_IN_FLIGHT;
int startDescriptorSet = (getContext().getCurrentFrame() % KRENGINE_MAX_FRAMES_IN_FLIGHT) * descriptorSetCount;
VkDescriptorSet descriptorSet = m_descriptorSets[startDescriptorSet];
if (descriptorSet == VK_NULL_HANDLE) {
return;
}
// TODO - Vulkan Refactoring - Support multiple descriptor set binding
vkCmdBindDescriptorSets(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, m_pipelineLayout, 0, descriptorSetCount, &descriptorSet, 0, nullptr);
}
const char* KRPipeline::getKey() const
{
return m_szKey;
}
VkPipeline& KRPipeline::getPipeline()
{
return m_graphicsPipeline;
}
void KRPipeline::setImageBinding(const std::string& name, KRTexture* texture, KRSampler* sampler)
{
for (int stage = 0; stage < static_cast<size_t>(ShaderStage::ShaderStageCount); stage++) {
StageInfo& stageInfo = m_stages[stage];
for (DescriptorSetInfo& descriptorSetInfo : stageInfo.descriptorSets) {
for (DescriptorBinding& binding : descriptorSetInfo.bindings) {
ImageDescriptorInfo* image = std::get_if<ImageDescriptorInfo>(&binding);
if (image) {
if (image->name == name) {
image->texture = texture;
image->sampler = sampler;
}
}
}
}
}
}
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