71 lines
2.5 KiB
C++
71 lines
2.5 KiB
C++
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#include "hk_model.hpp"
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#include <cassert>
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#include <cstring>
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namespace hk{
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Model::Model(Device &device, const std::vector<Vertex> &vertices)
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: device{device}
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{
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createVertexBuffers(vertices);
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}
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Model::~Model()
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{
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vkDestroyBuffer(device.device(), vertexBuffer, nullptr);
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vkFreeMemory(device.device(), vertexBufferMemory, nullptr);
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}
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void Model::createVertexBuffers(const std::vector<Vertex> &vertices)
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{
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vertexCount = static_cast<uint32_t>(vertices.size());
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assert(vertexCount >= 3 && "Vertex count must be at least 3");
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VkDeviceSize bufferSize = sizeof(vertices[0]) * vertexCount;
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device.createBuffer(
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bufferSize,
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VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
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VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
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vertexBuffer,
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vertexBufferMemory
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);
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void *data;
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vkMapMemory(device.device(), vertexBufferMemory, 0, bufferSize, 0, &data);
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memcpy(data, vertices.data(), static_cast<size_t>(bufferSize));
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vkUnmapMemory(device.device(), vertexBufferMemory);
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}
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void Model::bind(VkCommandBuffer commandBuffer)
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{
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VkBuffer buffers[] = {vertexBuffer};
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VkDeviceSize offsets[] = {0};
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vkCmdBindVertexBuffers(commandBuffer, 0, 1, buffers, offsets);
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}
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void Model::draw(VkCommandBuffer commandBuffer)
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{
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vkCmdDraw(commandBuffer, vertexCount, 1, 0, 0);
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}
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std::vector<VkVertexInputBindingDescription> Model::Vertex::getBindingDescriptions()
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{
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std::vector<VkVertexInputBindingDescription> bindingDescriptions(1);
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bindingDescriptions[0].binding = 0;
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bindingDescriptions[0].stride = sizeof(Vertex);
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bindingDescriptions[0].inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
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return bindingDescriptions;
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}
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std::vector<VkVertexInputAttributeDescription> Model::Vertex::getAttributeDescriptions()
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{
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std::vector<VkVertexInputAttributeDescription> attributeDescriptions(2);
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attributeDescriptions[0].binding = 0;
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attributeDescriptions[0].location = 0;
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attributeDescriptions[0].format = VK_FORMAT_R32G32_SFLOAT;
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attributeDescriptions[0].offset = offsetof(Vertex, posision);
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attributeDescriptions[1].binding = 0;
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attributeDescriptions[1].location = 1;
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attributeDescriptions[1].format = VK_FORMAT_R32G32B32_SFLOAT;
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attributeDescriptions[1].offset = offsetof(Vertex, color);
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return attributeDescriptions;
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}
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}
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