Vulkan-Hpp/samples/13_InitVertexBuffer/13_InitVertexBuffer.cpp

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// Copyright(c) 2019, NVIDIA CORPORATION. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// VulkanHpp Samples : 13_InitVertexBuffer
// Initialize vertex buffer
#include "../utils/geometries.hpp"
#include "../utils/utils.hpp"
#include "vulkan/vulkan.hpp"
#include <iostream>
static char const* AppName = "13_InitVertexBuffer";
static char const* EngineName = "Vulkan.hpp";
int main(int /*argc*/, char ** /*argv*/)
{
try
{
vk::UniqueInstance instance = vk::su::createInstance(AppName, EngineName, {}, vk::su::getInstanceExtensions());
#if !defined(NDEBUG)
vk::UniqueDebugUtilsMessengerEXT debugUtilsMessenger = vk::su::createDebugUtilsMessenger(instance);
#endif
vk::PhysicalDevice physicalDevice = instance->enumeratePhysicalDevices().front();
vk::su::SurfaceData surfaceData(instance, AppName, AppName, vk::Extent2D(64, 64));
std::pair<uint32_t, uint32_t> graphicsAndPresentQueueFamilyIndex = vk::su::findGraphicsAndPresentQueueFamilyIndex(physicalDevice, *surfaceData.surface);
vk::UniqueDevice device = vk::su::createDevice(physicalDevice, graphicsAndPresentQueueFamilyIndex.first, vk::su::getDeviceExtensions());
vk::UniqueCommandPool commandPool = vk::su::createCommandPool(device, graphicsAndPresentQueueFamilyIndex.first);
vk::UniqueCommandBuffer commandBuffer = std::move(device->allocateCommandBuffersUnique(vk::CommandBufferAllocateInfo(commandPool.get(), vk::CommandBufferLevel::ePrimary, 1)).front());
vk::Queue graphicsQueue = device->getQueue(graphicsAndPresentQueueFamilyIndex.first, 0);
vk::su::SwapChainData swapChainData(physicalDevice, device, *surfaceData.surface, surfaceData.extent, vk::ImageUsageFlagBits::eColorAttachment | vk::ImageUsageFlagBits::eTransferSrc,
vk::UniqueSwapchainKHR(), graphicsAndPresentQueueFamilyIndex.first, graphicsAndPresentQueueFamilyIndex.second);
vk::su::DepthBufferData depthBufferData(physicalDevice, device, vk::Format::eD16Unorm, surfaceData.extent);
vk::UniqueRenderPass renderPass = vk::su::createRenderPass(device, swapChainData.colorFormat, depthBufferData.format);
std::vector<vk::UniqueFramebuffer> framebuffers = vk::su::createFramebuffers(device, renderPass, swapChainData.imageViews, depthBufferData.imageView, surfaceData.extent);
/* VULKAN_KEY_START */
// create a vertex buffer for some vertex and color data
vk::UniqueBuffer vertexBuffer = device->createBufferUnique(vk::BufferCreateInfo(vk::BufferCreateFlags(), sizeof(coloredCubeData), vk::BufferUsageFlagBits::eVertexBuffer));
// allocate device memory for that buffer
vk::MemoryRequirements memoryRequirements = device->getBufferMemoryRequirements(vertexBuffer.get());
uint32_t memoryTypeIndex = vk::su::findMemoryType(physicalDevice.getMemoryProperties(), memoryRequirements.memoryTypeBits, vk::MemoryPropertyFlagBits::eHostVisible | vk::MemoryPropertyFlagBits::eHostCoherent);
vk::UniqueDeviceMemory deviceMemory = device->allocateMemoryUnique(vk::MemoryAllocateInfo(memoryRequirements.size, memoryTypeIndex));
// copy the vertex and color data into that device memory
uint8_t *pData = static_cast<uint8_t*>(device->mapMemory(deviceMemory.get(), 0, memoryRequirements.size));
memcpy(pData, coloredCubeData, sizeof(coloredCubeData));
device->unmapMemory(deviceMemory.get());
// and bind the device memory to the vertex buffer
device->bindBufferMemory(vertexBuffer.get(), deviceMemory.get(), 0);
vk::UniqueSemaphore imageAcquiredSemaphore = device->createSemaphoreUnique(vk::SemaphoreCreateInfo(vk::SemaphoreCreateFlags()));
vk::ResultValue<uint32_t> currentBuffer = device->acquireNextImageKHR(swapChainData.swapChain.get(), vk::su::FenceTimeout, imageAcquiredSemaphore.get(), nullptr);
assert(currentBuffer.result == vk::Result::eSuccess);
assert(currentBuffer.value < framebuffers.size());
vk::ClearValue clearValues[2];
clearValues[0].color = vk::ClearColorValue(std::array<float, 4>({ 0.2f, 0.2f, 0.2f, 0.2f }));
clearValues[1].depthStencil = vk::ClearDepthStencilValue(1.0f, 0);
commandBuffer->begin(vk::CommandBufferBeginInfo(vk::CommandBufferUsageFlags()));
vk::RenderPassBeginInfo renderPassBeginInfo(renderPass.get(), framebuffers[currentBuffer.value].get(), vk::Rect2D(vk::Offset2D(0, 0), surfaceData.extent), 2, clearValues);
commandBuffer->beginRenderPass(renderPassBeginInfo, vk::SubpassContents::eInline);
commandBuffer->bindVertexBuffers(0, *vertexBuffer, {0});
commandBuffer->endRenderPass();
commandBuffer->end();
vk::su::submitAndWait(device, graphicsQueue, commandBuffer);
// Note: No need to explicitly destroy the vertexBuffer, deviceMemory, or semaphore, as the destroy functions are called
// by the destructor of the UniqueBuffer, UniqueDeviceMemory, and UniqueSemaphore, respectively, on leaving this scope.
/* VULKAN_KEY_END */
#if defined(VK_USE_PLATFORM_WIN32_KHR)
DestroyWindow(surfaceData.window);
#else
#pragma error "unhandled platform"
#endif
}
catch (vk::SystemError err)
{
std::cout << "vk::SystemError: " << err.what() << std::endl;
exit(-1);
}
catch (std::runtime_error err)
{
std::cout << "std::runtime_error: " << err.what() << std::endl;
exit(-1);
}
catch (...)
{
std::cout << "unknown error\n";
exit(-1);
}
return 0;
}