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

145 lines
6.5 KiB
C++

// 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 <iostream>
static char const * AppName = "13_InitVertexBuffer";
static char const * EngineName = "Vulkan.hpp";
int main( int /*argc*/, char ** /*argv*/ )
{
try
{
vk::Instance instance = vk::su::createInstance( AppName, EngineName, {}, vk::su::getInstanceExtensions() );
#if !defined( NDEBUG )
vk::DebugUtilsMessengerEXT debugUtilsMessenger = instance.createDebugUtilsMessengerEXT( vk::su::makeDebugUtilsMessengerCreateInfoEXT() );
#endif
vk::PhysicalDevice physicalDevice = instance.enumeratePhysicalDevices().front();
vk::su::SurfaceData surfaceData( instance, AppName, vk::Extent2D( 64, 64 ) );
std::pair<uint32_t, uint32_t> graphicsAndPresentQueueFamilyIndex = vk::su::findGraphicsAndPresentQueueFamilyIndex( physicalDevice, surfaceData.surface );
vk::Device device = vk::su::createDevice( physicalDevice, graphicsAndPresentQueueFamilyIndex.first, vk::su::getDeviceExtensions() );
vk::CommandPool commandPool = device.createCommandPool( { {}, graphicsAndPresentQueueFamilyIndex.first } );
vk::CommandBuffer commandBuffer =
device.allocateCommandBuffers( vk::CommandBufferAllocateInfo( commandPool, 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,
{},
graphicsAndPresentQueueFamilyIndex.first,
graphicsAndPresentQueueFamilyIndex.second );
vk::su::DepthBufferData depthBufferData( physicalDevice, device, vk::Format::eD16Unorm, surfaceData.extent );
vk::RenderPass renderPass = vk::su::createRenderPass( device, swapChainData.colorFormat, depthBufferData.format );
std::vector<vk::Framebuffer> 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::Buffer vertexBuffer =
device.createBuffer( vk::BufferCreateInfo( vk::BufferCreateFlags(), sizeof( coloredCubeData ), vk::BufferUsageFlagBits::eVertexBuffer ) );
// allocate device memory for that buffer
vk::MemoryRequirements memoryRequirements = device.getBufferMemoryRequirements( vertexBuffer );
uint32_t memoryTypeIndex = vk::su::findMemoryType( physicalDevice.getMemoryProperties(),
memoryRequirements.memoryTypeBits,
vk::MemoryPropertyFlagBits::eHostVisible | vk::MemoryPropertyFlagBits::eHostCoherent );
vk::DeviceMemory deviceMemory = device.allocateMemory( 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, 0, memoryRequirements.size ) );
memcpy( pData, coloredCubeData, sizeof( coloredCubeData ) );
device.unmapMemory( deviceMemory );
// and bind the device memory to the vertex buffer
device.bindBufferMemory( vertexBuffer, deviceMemory, 0 );
vk::Semaphore imageAcquiredSemaphore = device.createSemaphore( vk::SemaphoreCreateInfo( vk::SemaphoreCreateFlags() ) );
vk::ResultValue<uint32_t> currentBuffer = device.acquireNextImageKHR( swapChainData.swapChain, vk::su::FenceTimeout, imageAcquiredSemaphore, nullptr );
assert( currentBuffer.result == vk::Result::eSuccess );
assert( currentBuffer.value < framebuffers.size() );
std::array<vk::ClearValue, 2> clearValues;
clearValues[0].color = vk::ClearColorValue( 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, framebuffers[currentBuffer.value], vk::Rect2D( vk::Offset2D( 0, 0 ), surfaceData.extent ), clearValues );
commandBuffer.beginRenderPass( renderPassBeginInfo, vk::SubpassContents::eInline );
commandBuffer.bindVertexBuffers( 0, vertexBuffer, { 0 } );
commandBuffer.endRenderPass();
commandBuffer.end();
vk::su::submitAndWait( device, graphicsQueue, commandBuffer );
device.destroySemaphore( imageAcquiredSemaphore );
device.destroyBuffer( vertexBuffer ); // destroy the buffer before the bound device memory to prevent some validation layer warning
device.freeMemory( deviceMemory );
/* VULKAN_KEY_END */
swapChainData.clear( device );
depthBufferData.clear( device );
for ( auto const & framebuffer : framebuffers )
{
device.destroyFramebuffer( framebuffer );
}
device.destroyRenderPass( renderPass );
device.freeCommandBuffers( commandPool, commandBuffer );
device.destroyCommandPool( commandPool );
device.destroy();
instance.destroySurfaceKHR( surfaceData.surface );
#if !defined( NDEBUG )
instance.destroyDebugUtilsMessengerEXT( debugUtilsMessenger );
#endif
instance.destroy();
}
catch ( vk::SystemError & err )
{
std::cout << "vk::SystemError: " << err.what() << std::endl;
exit( -1 );
}
catch ( std::exception & err )
{
std::cout << "std::exception: " << err.what() << std::endl;
exit( -1 );
}
catch ( ... )
{
std::cout << "unknown error\n";
exit( -1 );
}
return 0;
}