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Tutorial01.cpp
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Tutorial01.cpp
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////////////////////////////////////////////////////////////////////////////////
// Copyright 2017 Intel Corporation
//
// 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.
////////////////////////////////////////////////////////////////////////////////
#include <vector>
#include "Tutorial01.h"
#include "VulkanFunctions.h"
namespace ApiWithoutSecrets {
Tutorial01::Tutorial01() :
VulkanLibrary(),
Vulkan() {
}
bool Tutorial01::OnWindowSizeChanged() {
return true;
}
bool Tutorial01::Draw() {
return true;
}
bool Tutorial01::PrepareVulkan() {
if( !LoadVulkanLibrary() ) {
return false;
}
if( !LoadExportedEntryPoints() ) {
return false;
}
if( !LoadGlobalLevelEntryPoints() ) {
return false;
}
if( !CreateInstance() ) {
return false;
}
if( !LoadInstanceLevelEntryPoints() ) {
return false;
}
if( !CreateDevice() ) {
return false;
}
if( !LoadDeviceLevelEntryPoints() ) {
return false;
}
if( !GetDeviceQueue() ) {
return false;
}
return true;
}
bool Tutorial01::LoadVulkanLibrary() {
#if defined(VK_USE_PLATFORM_WIN32_KHR)
VulkanLibrary = LoadLibrary( "vulkan-1.dll" );
#elif defined(VK_USE_PLATFORM_XCB_KHR) || defined(VK_USE_PLATFORM_XLIB_KHR)
VulkanLibrary = dlopen( "libvulkan.so.1", RTLD_NOW );
#endif
if( VulkanLibrary == nullptr ) {
std::cout << "Could not load Vulkan library!" << std::endl;
return false;
}
return true;
}
bool Tutorial01::LoadExportedEntryPoints() {
#if defined(VK_USE_PLATFORM_WIN32_KHR)
#define LoadProcAddress GetProcAddress
#elif defined(VK_USE_PLATFORM_XCB_KHR) || defined(VK_USE_PLATFORM_XLIB_KHR)
#define LoadProcAddress dlsym
#endif
#define VK_EXPORTED_FUNCTION( fun ) \
if( !(fun = (PFN_##fun)LoadProcAddress( VulkanLibrary, #fun )) ) { \
std::cout << "Could not load exported function: " << #fun << "!" << std::endl; \
return false; \
}
#include "ListOfFunctions.inl"
return true;
}
bool Tutorial01::LoadGlobalLevelEntryPoints() {
#define VK_GLOBAL_LEVEL_FUNCTION( fun ) \
if( !(fun = (PFN_##fun)vkGetInstanceProcAddr( nullptr, #fun )) ) { \
std::cout << "Could not load global level function: " << #fun << "!" << std::endl; \
return false; \
}
#include "ListOfFunctions.inl"
return true;
}
bool Tutorial01::CreateInstance() {
VkApplicationInfo application_info = {
VK_STRUCTURE_TYPE_APPLICATION_INFO, // VkStructureType sType
nullptr, // const void *pNext
"API without Secrets: Introduction to Vulkan", // const char *pApplicationName
VK_MAKE_VERSION( 1, 0, 0 ), // uint32_t applicationVersion
"Vulkan Tutorial by Intel", // const char *pEngineName
VK_MAKE_VERSION( 1, 0, 0 ), // uint32_t engineVersion
VK_MAKE_VERSION( 1, 0, 0 ) // uint32_t apiVersion
};
VkInstanceCreateInfo instance_create_info = {
VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO, // VkStructureType sType
nullptr, // const void* pNext
0, // VkInstanceCreateFlags flags
&application_info, // const VkApplicationInfo *pApplicationInfo
0, // uint32_t enabledLayerCount
nullptr, // const char * const *ppEnabledLayerNames
0, // uint32_t enabledExtensionCount
nullptr // const char * const *ppEnabledExtensionNames
};
if( vkCreateInstance( &instance_create_info, nullptr, &Vulkan.Instance ) != VK_SUCCESS ) {
std::cout << "Could not create Vulkan instance!" << std::endl;
return false;
}
return true;
}
bool Tutorial01::LoadInstanceLevelEntryPoints() {
#define VK_INSTANCE_LEVEL_FUNCTION( fun ) \
if( !(fun = (PFN_##fun)vkGetInstanceProcAddr( Vulkan.Instance, #fun )) ) { \
std::cout << "Could not load instance level function: " << #fun << "!" << std::endl; \
return false; \
}
#include "ListOfFunctions.inl"
return true;
}
bool Tutorial01::CreateDevice() {
uint32_t num_devices = 0;
if( (vkEnumeratePhysicalDevices( Vulkan.Instance, &num_devices, nullptr ) != VK_SUCCESS) ||
(num_devices == 0) ) {
std::cout << "Error occurred during physical devices enumeration!" << std::endl;
return false;
}
std::vector<VkPhysicalDevice> physical_devices( num_devices );
if( vkEnumeratePhysicalDevices( Vulkan.Instance, &num_devices, &physical_devices[0] ) != VK_SUCCESS ) {
std::cout << "Error occurred during physical devices enumeration!" << std::endl;
return false;
}
VkPhysicalDevice selected_physical_device = VK_NULL_HANDLE;
uint32_t selected_queue_family_index = UINT32_MAX;
for( uint32_t i = 0; i < num_devices; ++i ) {
if( CheckPhysicalDeviceProperties( physical_devices[i], selected_queue_family_index ) ) {
selected_physical_device = physical_devices[i];
break;
}
}
if( selected_physical_device == VK_NULL_HANDLE ) {
std::cout << "Could not select physical device based on the chosen properties!" << std::endl;
return false;
}
std::vector<float> queue_priorities = { 1.0f };
VkDeviceQueueCreateInfo queue_create_info = {
VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO, // VkStructureType sType
nullptr, // const void *pNext
0, // VkDeviceQueueCreateFlags flags
selected_queue_family_index, // uint32_t queueFamilyIndex
static_cast<uint32_t>(queue_priorities.size()), // uint32_t queueCount
&queue_priorities[0] // const float *pQueuePriorities
};
VkDeviceCreateInfo device_create_info = {
VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO, // VkStructureType sType
nullptr, // const void *pNext
0, // VkDeviceCreateFlags flags
1, // uint32_t queueCreateInfoCount
&queue_create_info, // const VkDeviceQueueCreateInfo *pQueueCreateInfos
0, // uint32_t enabledLayerCount
nullptr, // const char * const *ppEnabledLayerNames
0, // uint32_t enabledExtensionCount
nullptr, // const char * const *ppEnabledExtensionNames
nullptr // const VkPhysicalDeviceFeatures *pEnabledFeatures
};
if( vkCreateDevice( selected_physical_device, &device_create_info, nullptr, &Vulkan.Device ) != VK_SUCCESS ) {
std::cout << "Could not create Vulkan device!" << std::endl;
return false;
}
Vulkan.QueueFamilyIndex = selected_queue_family_index;
return true;
}
bool Tutorial01::CheckPhysicalDeviceProperties( VkPhysicalDevice physical_device, uint32_t &queue_family_index ) {
VkPhysicalDeviceProperties device_properties;
VkPhysicalDeviceFeatures device_features;
vkGetPhysicalDeviceProperties( physical_device, &device_properties );
vkGetPhysicalDeviceFeatures( physical_device, &device_features );
uint32_t major_version = VK_VERSION_MAJOR( device_properties.apiVersion );
uint32_t minor_version = VK_VERSION_MINOR( device_properties.apiVersion );
uint32_t patch_version = VK_VERSION_PATCH( device_properties.apiVersion );
if( (major_version < 1) ||
(device_properties.limits.maxImageDimension2D < 4096) ) {
std::cout << "Physical device " << physical_device << " doesn't support required parameters!" << std::endl;
return false;
}
uint32_t queue_families_count = 0;
vkGetPhysicalDeviceQueueFamilyProperties( physical_device, &queue_families_count, nullptr );
if( queue_families_count == 0 ) {
std::cout << "Physical device " << physical_device << " doesn't have any queue families!" << std::endl;
return false;
}
std::vector<VkQueueFamilyProperties> queue_family_properties( queue_families_count );
vkGetPhysicalDeviceQueueFamilyProperties( physical_device, &queue_families_count, &queue_family_properties[0] );
for( uint32_t i = 0; i < queue_families_count; ++i ) {
if( (queue_family_properties[i].queueCount > 0) &&
(queue_family_properties[i].queueFlags & VK_QUEUE_GRAPHICS_BIT) ) {
queue_family_index = i;
std::cout << "Selected device: " << device_properties.deviceName << std::endl;
return true;
}
}
std::cout << "Could not find queue family with required properties on physical device " << physical_device << "!" << std::endl;
return false;
}
bool Tutorial01::LoadDeviceLevelEntryPoints() {
#define VK_DEVICE_LEVEL_FUNCTION( fun ) \
if( !(fun = (PFN_##fun)vkGetDeviceProcAddr( Vulkan.Device, #fun )) ) { \
std::cout << "Could not load device level function: " << #fun << "!" << std::endl; \
return false; \
}
#include "ListOfFunctions.inl"
return true;
}
bool Tutorial01::GetDeviceQueue() {
vkGetDeviceQueue( Vulkan.Device, Vulkan.QueueFamilyIndex, 0, &Vulkan.Queue );
return true;
}
Tutorial01::~Tutorial01() {
if( Vulkan.Device != VK_NULL_HANDLE ) {
vkDeviceWaitIdle( Vulkan.Device );
vkDestroyDevice( Vulkan.Device, nullptr );
}
if( Vulkan.Instance != VK_NULL_HANDLE ) {
vkDestroyInstance( Vulkan.Instance, nullptr );
}
if( VulkanLibrary ) {
#if defined(VK_USE_PLATFORM_WIN32_KHR)
FreeLibrary( VulkanLibrary );
#elif defined(VK_USE_PLATFORM_XCB_KHR) || defined(VK_USE_PLATFORM_XLIB_KHR)
dlclose( VulkanLibrary );
#endif
}
}
} // namespace ApiWithoutSecrets