604 lines
28 KiB
C++
604 lines
28 KiB
C++
/*
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* Vulkan Example - Passing vertex attributes using interleaved and separate buffers
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*
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* Copyright (C) 2022 by Sascha Willems - www.saschawillems.de
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*
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* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
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*/
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#include "vertexattributes.h"
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void VulkanExample::loadSceneNode(const tinygltf::Node& inputNode, const tinygltf::Model& input, Node* parent)
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{
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Node node{};
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// Get the local node matrix
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// It's either made up from translation, rotation, scale or a 4x4 matrix
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node.matrix = glm::mat4(1.0f);
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if (inputNode.translation.size() == 3) {
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node.matrix = glm::translate(node.matrix, glm::vec3(glm::make_vec3(inputNode.translation.data())));
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}
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if (inputNode.rotation.size() == 4) {
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glm::quat q = glm::make_quat(inputNode.rotation.data());
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node.matrix *= glm::mat4(q);
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}
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if (inputNode.scale.size() == 3) {
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node.matrix = glm::scale(node.matrix, glm::vec3(glm::make_vec3(inputNode.scale.data())));
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}
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if (inputNode.matrix.size() == 16) {
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node.matrix = glm::make_mat4x4(inputNode.matrix.data());
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};
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// Load node's children
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if (inputNode.children.size() > 0) {
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for (size_t i = 0; i < inputNode.children.size(); i++) {
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loadSceneNode(input.nodes[inputNode.children[i]], input, &node);
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}
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}
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// If the node contains mesh data, we load vertices and indices from the buffers
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// In glTF this is done via accessors and buffer views
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if (inputNode.mesh > -1) {
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const tinygltf::Mesh mesh = input.meshes[inputNode.mesh];
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// Iterate through all primitives of this node's mesh
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for (size_t i = 0; i < mesh.primitives.size(); i++) {
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const tinygltf::Primitive& glTFPrimitive = mesh.primitives[i];
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uint32_t firstIndex = static_cast<uint32_t>(indexBuffer.size());
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uint32_t vertexStart = static_cast<uint32_t>(vertexBuffer.size());
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uint32_t indexCount = 0;
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// Vertex attributes
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const float* positionBuffer = nullptr;
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const float* normalsBuffer = nullptr;
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const float* texCoordsBuffer = nullptr;
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const float* tangentsBuffer = nullptr;
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size_t vertexCount = 0;
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// Anonymous functions to simplify buffer view access
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auto getBuffer = [glTFPrimitive, input, &vertexCount](const std::string attributeName, const float* &bufferTarget) {
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if (glTFPrimitive.attributes.find(attributeName) != glTFPrimitive.attributes.end()) {
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const tinygltf::Accessor& accessor = input.accessors[glTFPrimitive.attributes.find(attributeName)->second];
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const tinygltf::BufferView& view = input.bufferViews[accessor.bufferView];
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bufferTarget = reinterpret_cast<const float*>(&(input.buffers[view.buffer].data[accessor.byteOffset + view.byteOffset]));
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if (attributeName == "POSITION") {
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vertexCount = accessor.count;
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}
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}
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};
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// Get buffer pointers to the vertex attributes used in this sample
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getBuffer("POSITION", positionBuffer);
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getBuffer("NORMAL", normalsBuffer);
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getBuffer("TEXCOORD_0", texCoordsBuffer);
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getBuffer("TANGENT", tangentsBuffer);
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// Append attributes to the vertex buffers
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for (size_t v = 0; v < vertexCount; v++) {
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// Append interleaved attributes
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Vertex vert{};
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vert.pos = glm::vec4(glm::make_vec3(&positionBuffer[v * 3]), 1.0f);
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vert.normal = glm::normalize(glm::vec3(normalsBuffer ? glm::make_vec3(&normalsBuffer[v * 3]) : glm::vec3(0.0f)));
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vert.uv = texCoordsBuffer ? glm::make_vec2(&texCoordsBuffer[v * 2]) : glm::vec3(0.0f);
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vert.tangent = tangentsBuffer ? glm::make_vec4(&tangentsBuffer[v * 4]) : glm::vec4(0.0f);
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vertexBuffer.push_back(vert);
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// Append separate attributes
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vertexAttributeBuffers.pos.push_back(glm::make_vec3(&positionBuffer[v * 3]));
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vertexAttributeBuffers.normal.push_back(glm::normalize(glm::vec3(normalsBuffer ? glm::make_vec3(&normalsBuffer[v * 3]) : glm::vec3(0.0f))));
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vertexAttributeBuffers.tangent.push_back(tangentsBuffer ? glm::make_vec4(&tangentsBuffer[v * 4]) : glm::vec4(0.0f));
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vertexAttributeBuffers.uv.push_back(texCoordsBuffer ? glm::make_vec2(&texCoordsBuffer[v * 2]) : glm::vec3(0.0f));
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}
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// Indices
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const tinygltf::Accessor& accessor = input.accessors[glTFPrimitive.indices];
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const tinygltf::BufferView& bufferView = input.bufferViews[accessor.bufferView];
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const tinygltf::Buffer& buffer = input.buffers[bufferView.buffer];
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indexCount += static_cast<uint32_t>(accessor.count);
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// glTF supports different component types of indices
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switch (accessor.componentType) {
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case TINYGLTF_PARAMETER_TYPE_UNSIGNED_INT: {
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const uint32_t* buf = reinterpret_cast<const uint32_t*>(&buffer.data[accessor.byteOffset + bufferView.byteOffset]);
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for (size_t index = 0; index < accessor.count; index++) {
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indexBuffer.push_back(buf[index] + vertexStart);
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}
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break;
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}
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case TINYGLTF_PARAMETER_TYPE_UNSIGNED_SHORT: {
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const uint16_t* buf = reinterpret_cast<const uint16_t*>(&buffer.data[accessor.byteOffset + bufferView.byteOffset]);
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for (size_t index = 0; index < accessor.count; index++) {
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indexBuffer.push_back(buf[index] + vertexStart);
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}
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break;
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}
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case TINYGLTF_PARAMETER_TYPE_UNSIGNED_BYTE: {
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const uint8_t* buf = reinterpret_cast<const uint8_t*>(&buffer.data[accessor.byteOffset + bufferView.byteOffset]);
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for (size_t index = 0; index < accessor.count; index++) {
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indexBuffer.push_back(buf[index] + vertexStart);
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}
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break;
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}
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default:
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std::cerr << "Index component type " << accessor.componentType << " not supported!" << std::endl;
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return;
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}
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Primitive primitive{};
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primitive.firstIndex = firstIndex;
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primitive.indexCount = indexCount;
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primitive.materialIndex = glTFPrimitive.material;
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node.mesh.primitives.push_back(primitive);
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}
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}
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if (parent) {
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parent->children.push_back(node);
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}
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else {
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nodes.push_back(node);
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}
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}
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VulkanExample::VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
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{
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title = "Separate/interleaved vertex attribute buffers";
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camera.type = Camera::CameraType::firstperson;
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camera.flipY = true;
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camera.setPosition(glm::vec3(0.0f, 1.0f, 0.0f));
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camera.setRotation(glm::vec3(0.0f, -90.0f, 0.0f));
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camera.setPerspective(60.0f, (float)width / (float)height, 0.1f, 256.0f);
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}
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VulkanExample::~VulkanExample()
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{
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vkDestroyPipeline(device, pipelines.vertexAttributesInterleaved, nullptr);
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vkDestroyPipeline(device, pipelines.vertexAttributesSeparate, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayouts.matrices, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayouts.textures, nullptr);
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indices.destroy();
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shaderData.buffer.destroy();
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separateVertexBuffers.normal.destroy();
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separateVertexBuffers.pos.destroy();
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separateVertexBuffers.tangent.destroy();
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separateVertexBuffers.uv.destroy();
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interleavedVertexBuffer.destroy();
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for (Image image : scene.images) {
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vkDestroyImageView(vulkanDevice->logicalDevice, image.texture.view, nullptr);
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vkDestroyImage(vulkanDevice->logicalDevice, image.texture.image, nullptr);
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vkDestroySampler(vulkanDevice->logicalDevice, image.texture.sampler, nullptr);
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vkFreeMemory(vulkanDevice->logicalDevice, image.texture.deviceMemory, nullptr);
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}
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}
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void VulkanExample::getEnabledFeatures()
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{
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enabledFeatures.samplerAnisotropy = deviceFeatures.samplerAnisotropy;
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}
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void VulkanExample::buildCommandBuffers()
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{
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VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
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VkClearValue clearValues[2];
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clearValues[0].color = defaultClearColor;
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clearValues[0].color = { { 0.25f, 0.25f, 0.25f, 1.0f } };;
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clearValues[1].depthStencil = { 1.0f, 0 };
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VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
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renderPassBeginInfo.renderPass = renderPass;
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renderPassBeginInfo.renderArea.offset.x = 0;
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renderPassBeginInfo.renderArea.offset.y = 0;
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renderPassBeginInfo.renderArea.extent.width = width;
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renderPassBeginInfo.renderArea.extent.height = height;
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renderPassBeginInfo.clearValueCount = 2;
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renderPassBeginInfo.pClearValues = clearValues;
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const VkViewport viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
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const VkRect2D scissor = vks::initializers::rect2D(width, height, 0, 0);
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for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
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{
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renderPassBeginInfo.framebuffer = frameBuffers[i];
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VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
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vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
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// Select the separate or interleaved vertex binding pipeline
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, vertexAttributeSettings == VertexAttributeSettings::separate ? pipelines.vertexAttributesSeparate : pipelines.vertexAttributesInterleaved);
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// Bind scene matrices descriptor to set 0
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vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, nullptr);
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// Use the same index buffer, no matter how vertex attributes are passed
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vkCmdBindIndexBuffer(drawCmdBuffers[i], indices.buffer, 0, VK_INDEX_TYPE_UINT32);
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if (vertexAttributeSettings == VertexAttributeSettings::separate) {
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// Using separate vertex attribute bindings requires binding multiple attribute buffers
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VkDeviceSize offsets[4] = { 0, 0, 0, 0 };
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std::array<VkBuffer, 4> buffers = { separateVertexBuffers.pos.buffer, separateVertexBuffers.normal.buffer, separateVertexBuffers.uv.buffer, separateVertexBuffers.tangent.buffer };
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vkCmdBindVertexBuffers(drawCmdBuffers[i], 0, static_cast<uint32_t>(buffers.size()), buffers.data(), offsets);
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}
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else {
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// Using interleaved attribute bindings only requires one buffer to be bound
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VkDeviceSize offsets[1] = { 0 };
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vkCmdBindVertexBuffers(drawCmdBuffers[i], 0, 1, &interleavedVertexBuffer.buffer, offsets);
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}
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// Render all nodes starting at top-level
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for (auto& node : nodes) {
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drawSceneNode(drawCmdBuffers[i], node);
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}
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drawUI(drawCmdBuffers[i]);
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vkCmdEndRenderPass(drawCmdBuffers[i]);
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VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
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}
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}
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void VulkanExample::loadglTFFile(std::string filename)
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{
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tinygltf::Model glTFInput;
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tinygltf::TinyGLTF gltfContext;
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std::string error, warning;
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this->device = device;
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#if defined(__ANDROID__)
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// On Android all assets are packed with the apk in a compressed form, so we need to open them using the asset manager
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// We let tinygltf handle this, by passing the asset manager of our app
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tinygltf::asset_manager = androidApp->activity->assetManager;
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#endif
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bool fileLoaded = gltfContext.LoadASCIIFromFile(&glTFInput, &error, &warning, filename);
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size_t pos = filename.find_last_of('/');
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std::string path = filename.substr(0, pos);
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if (!fileLoaded) {
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vks::tools::exitFatal("Could not open the glTF file.\n\nThe file is part of the additional asset pack.\n\nRun \"download_assets.py\" in the repository root to download the latest version.", -1);
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return;
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}
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// Load images
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scene.images.resize(glTFInput.images.size());
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for (size_t i = 0; i < glTFInput.images.size(); i++) {
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tinygltf::Image& glTFImage = glTFInput.images[i];
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scene.images[i].texture.loadFromFile(path + "/" + glTFImage.uri, VK_FORMAT_R8G8B8A8_UNORM, vulkanDevice, queue);
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}
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// Load textures
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scene.textures.resize(glTFInput.textures.size());
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for (size_t i = 0; i < glTFInput.textures.size(); i++) {
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scene.textures[i].imageIndex = glTFInput.textures[i].source;
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}
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// Load materials
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scene.materials.resize(glTFInput.materials.size());
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for (size_t i = 0; i < glTFInput.materials.size(); i++) {
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// We only read the most basic properties required for our sample
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tinygltf::Material glTFMaterial = glTFInput.materials[i];
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// Get the base color factor
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if (glTFMaterial.values.find("baseColorFactor") != glTFMaterial.values.end()) {
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scene.materials[i].baseColorFactor = glm::make_vec4(glTFMaterial.values["baseColorFactor"].ColorFactor().data());
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}
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// Get base color texture index
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if (glTFMaterial.values.find("baseColorTexture") != glTFMaterial.values.end()) {
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scene.materials[i].baseColorTextureIndex = glTFMaterial.values["baseColorTexture"].TextureIndex();
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}
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// Get the normal map texture index
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if (glTFMaterial.additionalValues.find("normalTexture") != glTFMaterial.additionalValues.end()) {
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scene.materials[i].normalTextureIndex = glTFMaterial.additionalValues["normalTexture"].TextureIndex();
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}
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// Get some additional material parameters that are used in this sample
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scene.materials[i].alphaMode = glTFMaterial.alphaMode;
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scene.materials[i].alphaCutOff = (float)glTFMaterial.alphaCutoff;
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}
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// Load nodes
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const tinygltf::Scene& scene = glTFInput.scenes[0];
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for (size_t i = 0; i < scene.nodes.size(); i++) {
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const tinygltf::Node node = glTFInput.nodes[scene.nodes[i]];
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loadSceneNode(node, glTFInput, nullptr);
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}
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uploadVertexData();
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}
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void VulkanExample::uploadVertexData()
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{
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// Upload vertex and index buffers
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// Anonymous functions to simplify buffer creation
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// Create a staging buffer used as a source for copies
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auto createStagingBuffer = [this](vks::Buffer& buffer, void* data, VkDeviceSize size) {
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VK_CHECK_RESULT(vulkanDevice->createBuffer(VK_BUFFER_USAGE_TRANSFER_SRC_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, &buffer, size, data));
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};
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// Create a device local buffer used as a target for copies
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auto createDeviceBuffer = [this](vks::Buffer& buffer, VkDeviceSize size, VkBufferUsageFlags usageFlags = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT) {
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VK_CHECK_RESULT(vulkanDevice->createBuffer(usageFlags | VK_BUFFER_USAGE_TRANSFER_DST_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, &buffer, size));
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};
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VkCommandBuffer copyCmd;
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VkBufferCopy copyRegion{};
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/*
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Interleaved vertex attributes
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We create one single buffer containing the interleaved vertex attributes
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*/
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size_t vertexBufferSize = vertexBuffer.size() * sizeof(Vertex);
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vks::Buffer vertexStaging;
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createStagingBuffer(vertexStaging, vertexBuffer.data(), vertexBufferSize);
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createDeviceBuffer(interleavedVertexBuffer, vertexStaging.size);
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// Copy data from staging buffer (host) do device local buffer (gpu)
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copyCmd = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
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copyRegion.size = vertexBufferSize;
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vkCmdCopyBuffer(copyCmd, vertexStaging.buffer, interleavedVertexBuffer.buffer, 1, ©Region);
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vulkanDevice->flushCommandBuffer(copyCmd, queue, true);
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vertexStaging.destroy();
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/*
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Separate vertex attributes
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We create multiple separate buffers for each of the vertex attributes (position, normals, etc.)
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*/
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std::array<vks::Buffer, 4> stagingBuffers;
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createStagingBuffer(stagingBuffers[0], vertexAttributeBuffers.pos.data(), vertexAttributeBuffers.pos.size() * sizeof(vertexAttributeBuffers.pos[0]));
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createStagingBuffer(stagingBuffers[1], vertexAttributeBuffers.normal.data(), vertexAttributeBuffers.normal.size() * sizeof(vertexAttributeBuffers.normal[0]));
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createStagingBuffer(stagingBuffers[2], vertexAttributeBuffers.uv.data(), vertexAttributeBuffers.uv.size() * sizeof(vertexAttributeBuffers.uv[0]));
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createStagingBuffer(stagingBuffers[3], vertexAttributeBuffers.tangent.data(), vertexAttributeBuffers.tangent.size() * sizeof(vertexAttributeBuffers.tangent[0]));
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createDeviceBuffer(separateVertexBuffers.pos, stagingBuffers[0].size);
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createDeviceBuffer(separateVertexBuffers.normal, stagingBuffers[1].size);
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createDeviceBuffer(separateVertexBuffers.uv, stagingBuffers[2].size);
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createDeviceBuffer(separateVertexBuffers.tangent, stagingBuffers[3].size);
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// Stage
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std::vector<vks::Buffer> attributeBuffers = {
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separateVertexBuffers.pos,
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separateVertexBuffers.normal,
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separateVertexBuffers.uv,
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separateVertexBuffers.tangent,
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};
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// Copy data from staging buffer (host) do device local buffer (gpu)
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copyCmd = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
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for (size_t i = 0; i < attributeBuffers.size(); i++) {
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copyRegion.size = attributeBuffers[i].size;
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vkCmdCopyBuffer(copyCmd, stagingBuffers[i].buffer, attributeBuffers[i].buffer, 1, ©Region);
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}
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vulkanDevice->flushCommandBuffer(copyCmd, queue, true);
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for (size_t i = 0; i < 4; i++) {
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stagingBuffers[i].destroy();
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}
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/*
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Index buffer
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The index buffer is always the same, no matter how we pass the vertex attributes
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*/
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size_t indexBufferSize = indexBuffer.size() * sizeof(uint32_t);
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vks::Buffer indexStaging;
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createStagingBuffer(indexStaging, indexBuffer.data(), indexBufferSize);
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createDeviceBuffer(indices, indexStaging.size, VK_BUFFER_USAGE_INDEX_BUFFER_BIT);
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// Copy data from staging buffer (host) do device local buffer (gpu)
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copyCmd = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
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copyRegion.size = indexBufferSize;
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vkCmdCopyBuffer(copyCmd, indexStaging.buffer, indices.buffer, 1, ©Region);
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vulkanDevice->flushCommandBuffer(copyCmd, queue, true);
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// Free staging resources
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indexStaging.destroy();
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}
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void VulkanExample::loadAssets()
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{
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loadglTFFile(getAssetPath() + "models/sponza/sponza.gltf");
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}
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void VulkanExample::setupDescriptors()
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{
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// One ubo to pass dynamic data to the shader
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// Two combined image samplers per material as each material uses color and normal maps
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std::vector<VkDescriptorPoolSize> poolSizes = {
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1),
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, static_cast<uint32_t>(scene.materials.size()) * 2),
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};
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// One set for matrices and one per model image/texture
|
|
const uint32_t maxSetCount = static_cast<uint32_t>(scene.images.size()) + 1;
|
|
VkDescriptorPoolCreateInfo descriptorPoolInfo = vks::initializers::descriptorPoolCreateInfo(poolSizes, maxSetCount);
|
|
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
|
|
// Descriptor set layout for passing matrices
|
|
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, 0)
|
|
};
|
|
VkDescriptorSetLayoutCreateInfo descriptorSetLayoutCI = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings.data(), static_cast<uint32_t>(setLayoutBindings.size()));
|
|
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorSetLayoutCI, nullptr, &descriptorSetLayouts.matrices));
|
|
// Descriptor set layout for passing material textures
|
|
setLayoutBindings = {
|
|
// Color map
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 0),
|
|
// Normal map
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 1),
|
|
};
|
|
descriptorSetLayoutCI.pBindings = setLayoutBindings.data();
|
|
descriptorSetLayoutCI.bindingCount = 2;
|
|
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorSetLayoutCI, nullptr, &descriptorSetLayouts.textures));
|
|
|
|
// Pipeline layout using both descriptor sets (set 0 = matrices, set 1 = material)
|
|
std::array<VkDescriptorSetLayout, 2> setLayouts = { descriptorSetLayouts.matrices, descriptorSetLayouts.textures };
|
|
VkPipelineLayoutCreateInfo pipelineLayoutCI = vks::initializers::pipelineLayoutCreateInfo(setLayouts.data(), static_cast<uint32_t>(setLayouts.size()));
|
|
// We will use push constants to push the local matrices of a primitive to the vertex shader
|
|
VkPushConstantRange pushConstantRange = vks::initializers::pushConstantRange(VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, sizeof(PushConstBlock), 0);
|
|
// Push constant ranges are part of the pipeline layout
|
|
pipelineLayoutCI.pushConstantRangeCount = 1;
|
|
pipelineLayoutCI.pPushConstantRanges = &pushConstantRange;
|
|
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCI, nullptr, &pipelineLayout));
|
|
|
|
// Descriptor set for scene matrices
|
|
VkDescriptorSetAllocateInfo allocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayouts.matrices, 1);
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
|
|
VkWriteDescriptorSet writeDescriptorSet = vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &shaderData.buffer.descriptor);
|
|
vkUpdateDescriptorSets(device, 1, &writeDescriptorSet, 0, nullptr);
|
|
|
|
// Descriptor sets for the materials
|
|
for (auto& material : scene.materials) {
|
|
const VkDescriptorSetAllocateInfo allocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayouts.textures, 1);
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &material.descriptorSet));
|
|
VkDescriptorImageInfo colorMap = scene.images[material.baseColorTextureIndex].texture.descriptor;
|
|
VkDescriptorImageInfo normalMap = scene.images[material.normalTextureIndex].texture.descriptor;
|
|
std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
|
|
vks::initializers::writeDescriptorSet(material.descriptorSet, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 0, &colorMap),
|
|
vks::initializers::writeDescriptorSet(material.descriptorSet, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &normalMap),
|
|
};
|
|
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, nullptr);
|
|
}
|
|
}
|
|
|
|
void VulkanExample::preparePipelines()
|
|
{
|
|
VkPipelineInputAssemblyStateCreateInfo inputAssemblyStateCI = vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, 0, VK_FALSE);
|
|
VkPipelineRasterizationStateCreateInfo rasterizationStateCI = vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_BACK_BIT, VK_FRONT_FACE_COUNTER_CLOCKWISE, 0);
|
|
VkPipelineColorBlendAttachmentState blendAttachmentStateCI = vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE);
|
|
VkPipelineColorBlendStateCreateInfo colorBlendStateCI = vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentStateCI);
|
|
VkPipelineDepthStencilStateCreateInfo depthStencilStateCI = vks::initializers::pipelineDepthStencilStateCreateInfo(VK_TRUE, VK_TRUE, VK_COMPARE_OP_LESS_OR_EQUAL);
|
|
VkPipelineViewportStateCreateInfo viewportStateCI = vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
|
|
VkPipelineMultisampleStateCreateInfo multisampleStateCI = vks::initializers::pipelineMultisampleStateCreateInfo(VK_SAMPLE_COUNT_1_BIT, 0);
|
|
const std::vector<VkDynamicState> dynamicStateEnables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
|
|
VkPipelineDynamicStateCreateInfo dynamicStateCI = vks::initializers::pipelineDynamicStateCreateInfo(dynamicStateEnables.data(), static_cast<uint32_t>(dynamicStateEnables.size()), 0);
|
|
VkPipelineVertexInputStateCreateInfo vertexInputStateCI = vks::initializers::pipelineVertexInputStateCreateInfo();
|
|
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCI = vks::initializers::pipelineCreateInfo(pipelineLayout, renderPass, 0);
|
|
pipelineCI.pVertexInputState = &vertexInputStateCI;
|
|
pipelineCI.pInputAssemblyState = &inputAssemblyStateCI;
|
|
pipelineCI.pRasterizationState = &rasterizationStateCI;
|
|
pipelineCI.pColorBlendState = &colorBlendStateCI;
|
|
pipelineCI.pMultisampleState = &multisampleStateCI;
|
|
pipelineCI.pViewportState = &viewportStateCI;
|
|
pipelineCI.pDepthStencilState = &depthStencilStateCI;
|
|
pipelineCI.pDynamicState = &dynamicStateCI;
|
|
pipelineCI.stageCount = static_cast<uint32_t>(shaderStages.size());
|
|
pipelineCI.pStages = shaderStages.data();
|
|
|
|
shaderStages[0] = loadShader(getShadersPath() + "vertexattributes/scene.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "vertexattributes/scene.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
|
|
// Interleaved vertex attributes
|
|
// One Binding (one buffer) and multiple attributes
|
|
const std::vector<VkVertexInputBindingDescription> vertexInputBindingsInterleaved = {
|
|
{ 0, sizeof(Vertex), VK_VERTEX_INPUT_RATE_VERTEX },
|
|
};
|
|
const std::vector<VkVertexInputAttributeDescription> vertexInputAttributesInterleaved = {
|
|
{ 0, 0, VK_FORMAT_R32G32B32_SFLOAT, offsetof(Vertex, pos) },
|
|
{ 1, 0, VK_FORMAT_R32G32B32_SFLOAT, offsetof(Vertex, normal) },
|
|
{ 2, 0, VK_FORMAT_R32G32_SFLOAT, offsetof(Vertex, uv) },
|
|
{ 3, 0, VK_FORMAT_R32G32B32A32_SFLOAT, offsetof(Vertex, tangent) },
|
|
};
|
|
|
|
vertexInputStateCI = vks::initializers::pipelineVertexInputStateCreateInfo(vertexInputBindingsInterleaved, vertexInputAttributesInterleaved);
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.vertexAttributesInterleaved));
|
|
|
|
// Separate vertex attribute
|
|
// Multiple bindings (for each attribute buffer) and multiple attribues
|
|
const std::vector<VkVertexInputBindingDescription> vertexInputBindingsSeparate = {
|
|
{ 0, sizeof(glm::vec3), VK_VERTEX_INPUT_RATE_VERTEX },
|
|
{ 1, sizeof(glm::vec3), VK_VERTEX_INPUT_RATE_VERTEX },
|
|
{ 2, sizeof(glm::vec2), VK_VERTEX_INPUT_RATE_VERTEX },
|
|
{ 3, sizeof(glm::vec4), VK_VERTEX_INPUT_RATE_VERTEX },
|
|
};
|
|
const std::vector<VkVertexInputAttributeDescription> vertexInputAttributesSeparate = {
|
|
{ 0, 0, VK_FORMAT_R32G32B32_SFLOAT, 0 },
|
|
{ 1, 1, VK_FORMAT_R32G32B32_SFLOAT, 0 },
|
|
{ 2, 2, VK_FORMAT_R32G32_SFLOAT, 0 },
|
|
{ 3, 3, VK_FORMAT_R32G32B32A32_SFLOAT, 0 },
|
|
};
|
|
|
|
vertexInputStateCI = vks::initializers::pipelineVertexInputStateCreateInfo(vertexInputBindingsSeparate, vertexInputAttributesSeparate);
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.vertexAttributesSeparate));
|
|
}
|
|
|
|
void VulkanExample::prepareUniformBuffers()
|
|
{
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
&shaderData.buffer,
|
|
sizeof(shaderData.values)));
|
|
VK_CHECK_RESULT(shaderData.buffer.map());
|
|
updateUniformBuffers();
|
|
}
|
|
|
|
void VulkanExample::updateUniformBuffers()
|
|
{
|
|
shaderData.values.projection = camera.matrices.perspective;
|
|
shaderData.values.view = camera.matrices.view;
|
|
shaderData.values.viewPos = camera.viewPos;
|
|
memcpy(shaderData.buffer.mapped, &shaderData.values, sizeof(shaderData.values));
|
|
}
|
|
|
|
void VulkanExample::prepare()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
loadAssets();
|
|
prepareUniformBuffers();
|
|
setupDescriptors();
|
|
preparePipelines();
|
|
buildCommandBuffers();
|
|
prepared = true;
|
|
}
|
|
|
|
void VulkanExample::drawSceneNode(VkCommandBuffer commandBuffer, Node node)
|
|
{
|
|
if (node.mesh.primitives.size() > 0) {
|
|
PushConstBlock pushConstBlock;
|
|
glm::mat4 nodeMatrix = node.matrix;
|
|
Node* currentParent = node.parent;
|
|
while (currentParent) {
|
|
nodeMatrix = currentParent->matrix * nodeMatrix;
|
|
currentParent = currentParent->parent;
|
|
}
|
|
for (Primitive& primitive : node.mesh.primitives) {
|
|
if (primitive.indexCount > 0) {
|
|
Material& material = scene.materials[primitive.materialIndex];
|
|
pushConstBlock.nodeMatrix = nodeMatrix;
|
|
pushConstBlock.alphaMask = (material.alphaMode == "MASK");
|
|
pushConstBlock.alphaMaskCutoff = material.alphaCutOff;
|
|
vkCmdPushConstants(commandBuffer, pipelineLayout, VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, 0, sizeof(PushConstBlock), &pushConstBlock);
|
|
vkCmdBindDescriptorSets(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 1, 1, &material.descriptorSet, 0, nullptr);
|
|
vkCmdDrawIndexed(commandBuffer, primitive.indexCount, 1, primitive.firstIndex, 0, 0);
|
|
}
|
|
}
|
|
}
|
|
for (auto& child : node.children) {
|
|
drawSceneNode(commandBuffer, child);
|
|
}
|
|
}
|
|
|
|
void VulkanExample::render()
|
|
{
|
|
renderFrame();
|
|
if (camera.updated) {
|
|
updateUniformBuffers();
|
|
}
|
|
}
|
|
|
|
void VulkanExample::viewChanged()
|
|
{
|
|
updateUniformBuffers();
|
|
}
|
|
|
|
void VulkanExample::OnUpdateUIOverlay(vks::UIOverlay* overlay)
|
|
{
|
|
if (overlay->header("Vertex buffer attributes")) {
|
|
bool interleaved = (vertexAttributeSettings == VertexAttributeSettings::interleaved);
|
|
bool separate = (vertexAttributeSettings == VertexAttributeSettings::separate);
|
|
if (overlay->radioButton("Interleaved", interleaved)) {
|
|
vertexAttributeSettings = VertexAttributeSettings::interleaved;
|
|
buildCommandBuffers();
|
|
}
|
|
if (overlay->radioButton("Separate", separate)) {
|
|
vertexAttributeSettings = VertexAttributeSettings::separate;
|
|
buildCommandBuffers();
|
|
}
|
|
}
|
|
}
|
|
|
|
VULKAN_EXAMPLE_MAIN()
|