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Minor cleanup work on determining graphics and present queue family indices (#2129)

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Andreas Süßenbach 2025-04-08 09:35:52 +02:00 committed by GitHub
parent 595f21ae1a
commit ce1ffedb70
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1 changed files with 57 additions and 47 deletions
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62
samples/utils/utils.cpp
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@ -422,35 +422,50 @@ namespace vk
std::vector<vk::QueueFamilyProperties> queueFamilyProperties = physicalDevice.getQueueFamilyProperties(); std::vector<vk::QueueFamilyProperties> queueFamilyProperties = physicalDevice.getQueueFamilyProperties();
assert( queueFamilyProperties.size() < ( std::numeric_limits<uint32_t>::max )() ); assert( queueFamilyProperties.size() < ( std::numeric_limits<uint32_t>::max )() );
uint32_t graphicsQueueFamilyIndex = findGraphicsQueueFamilyIndex( queueFamilyProperties ); // look for a queueFamilyIndex that supports graphics and present
if ( physicalDevice.getSurfaceSupportKHR( graphicsQueueFamilyIndex, surface ) ) auto combinedIt = std::find_if( queueFamilyProperties.begin(),
queueFamilyProperties.end(),
[&physicalDevice, &surface]( vk::QueueFamilyProperties const & qfp )
{ {
return std::make_pair( graphicsQueueFamilyIndex, static uint32_t index = 0;
graphicsQueueFamilyIndex ); // the first graphicsQueueFamilyIndex does also support presents return ( qfp.queueFlags & vk::QueueFlagBits::eGraphics ) && physicalDevice.getSurfaceSupportKHR( index++, surface );
} );
if ( combinedIt != queueFamilyProperties.end() )
{
uint32_t index = static_cast<uint32_t>( std::distance( queueFamilyProperties.begin(), combinedIt ) );
return { index, index }; // the first index that supports graphics and present
} }
else
// the graphicsQueueFamilyIndex doesn't support present -> look for an other family index that supports both
// graphics and present
for ( size_t i = 0; i < queueFamilyProperties.size(); i++ )
{ {
if ( ( queueFamilyProperties[i].queueFlags & vk::QueueFlagBits::eGraphics ) && // there's no single index that supports both graphics and present -> look for separate ones
physicalDevice.getSurfaceSupportKHR( static_cast<uint32_t>( i ), surface ) ) auto graphicsIt = std::find_if( queueFamilyProperties.begin(),
queueFamilyProperties.end(),
[]( vk::QueueFamilyProperties const & qfp ) { return qfp.queueFlags & vk::QueueFlagBits::eGraphics; } );
if ( graphicsIt != queueFamilyProperties.end() )
{ {
return std::make_pair( static_cast<uint32_t>( i ), static_cast<uint32_t>( i ) ); uint32_t graphicsIndex = static_cast<uint32_t>( std::distance( queueFamilyProperties.begin(), graphicsIt ) );
auto presentIt = std::find_if( queueFamilyProperties.begin(),
queueFamilyProperties.end(),
[&physicalDevice, &surface]( vk::QueueFamilyProperties const & )
{
static uint32_t index = 0;
return physicalDevice.getSurfaceSupportKHR( index++, surface );
} );
if ( presentIt != queueFamilyProperties.end() )
{
uint32_t presentIndex = static_cast<uint32_t>( std::distance( queueFamilyProperties.begin(), presentIt ) );
return { graphicsIndex, presentIndex };
}
else
{
throw std::runtime_error( "Could not find a queue family index that supports present -> terminating" );
} }
} }
else
// there's nothing like a single family index that supports both graphics and present -> look for an other family
// index that supports present
for ( size_t i = 0; i < queueFamilyProperties.size(); i++ )
{ {
if ( physicalDevice.getSurfaceSupportKHR( static_cast<uint32_t>( i ), surface ) ) throw std::runtime_error( "Could not find a queue family index that supports graphics -> terminating" );
{
return std::make_pair( graphicsQueueFamilyIndex, static_cast<uint32_t>( i ) );
} }
} }
throw std::runtime_error( "Could not find queues for both graphics or present -> terminating" );
} }
uint32_t findMemoryType( vk::PhysicalDeviceMemoryProperties const & memoryProperties, uint32_t typeBits, vk::MemoryPropertyFlags requirementsMask ) uint32_t findMemoryType( vk::PhysicalDeviceMemoryProperties const & memoryProperties, uint32_t typeBits, vk::MemoryPropertyFlags requirementsMask )
@ -997,12 +1012,7 @@ namespace vk
glfwContext() glfwContext()
{ {
glfwInit(); glfwInit();
glfwSetErrorCallback( glfwSetErrorCallback( []( int error, const char * msg ) { std::cerr << "glfw: " << "(" << error << ") " << msg << std::endl; } );
[]( int error, const char * msg )
{
std::cerr << "glfw: "
<< "(" << error << ") " << msg << std::endl;
} );
} }
~glfwContext() ~glfwContext()